Indoor radar device, indoor event detection system, and method thereof

Abstract

To provide an indoor radar device.SOLUTION: An indoor radar device having a housing outer surface is provided, the housing outer surface including at least one mounting surface designed to be coupled to an indoor surface of a room, and an upper slope surface configured to face a ceiling of the room at an angle, where an upper slope angle between the upper slope surface and a floor of the room is 15 to 85 degrees. Such an arrangement prevents a radar signal of the indoor radar device from being interfered.SELECTED DRAWING: Figure 1A

Description

Technical Field

[0001] The present disclosure relates to an indoor radar device, an indoor event detection system, and a method thereof, and particularly to an indoor radar device, an indoor event detection system, and a method thereof in a state not suitable for the use of image detection.

Background Art

[0002] Most of the deaths in enclosed spaces such as public toilets are due to factors such as sudden dizziness and heart failure, all of which were not discovered in a timely manner in the enclosed space, resulting in the loss of precious rescue time.

Summary of the Invention

Problems to be Solved by the Invention

[0003] According to the above, in order to avoid regrettable situations in enclosed spaces not suitable for the use of image detection, such as toilets, bathrooms, or dressing rooms, it is necessary to develop a device, a system, and a method capable of detecting events or health conditions occurring to people in the enclosed space.

Means for Solving the Problems

[0004] The present disclosure provides an indoor radar device, an indoor event detection system, and a method thereof. By including an upward inclined surface for the case outer surface of the indoor radar device to face obliquely towards the ceiling, it is possible to prevent articles that interfere with the radar signal from being placed or hung on the indoor radar device, and it is possible to enhance the drainage performance.

[0005] According to an embodiment of the present disclosure, there is provided an indoor radar device including a case outer surface, wherein the case outer surface includes at least one attachment surface for connection to an indoor surface of a room, and an upward inclined surface used to face obliquely towards the ceiling and having an upward inclined surface angle between the ground of the room of 15 degrees to 85 degrees.

[0006] In the example of the indoor radar device according to the foregoing embodiment, the upper inclined surface may be a convex arc surface and has a plurality of normal directions. The average surface roughness of the upper inclined surface may be less than 5 mm. The contact angle of the upper inclined surface may be greater than 30 degrees. The indoor surface is a surface that is not parallel to the wall surface of the room or the floor in the room.

[0007] In the example of the indoor radar device according to the foregoing embodiment, the indoor radar device may further include a first antenna array including at least two antennas. The two antennas are used to be arranged along the direction from the ground to the ceiling. The distance between the two antennas may be 0.5 times the wavelength, which may be in the range of 0.001 mm to 12 mm.

[0008] In the example of the indoor radar device according to the foregoing embodiment, the outer surface of the case may further include a first transmission surface. The first antenna array is adjacent to or provided on the first transmission surface. The first transmission surface is used to be closer to the ground than the upper inclined surface and to face obliquely to the ground. The first angle between the first transmission surface and the mounting surface may be in the range of 5 degrees to 75 degrees.

[0009] In the example of the indoor radar device according to the foregoing embodiment, the number of mounting surfaces may be two. The mounting surface angle between the two mounting surfaces may be in the range of 70 degrees to 110 degrees. The upper inclined surface is connected between the two mounting surfaces and is used to taper along the direction from the ground to the ceiling.

[0010] In the example of the indoor radar device according to the foregoing embodiment, the indoor radar device may further include a radar unit and an emergency notification unit that is triggered by a detection target in the room to report an emergency state and is used to be connected to a part of the radar unit away from the ground. The radar outer surface of the outer surface of the case corresponds to the radar unit. The emergency notification outer surface of the outer surface of the case corresponds to the emergency notification unit. And the upper inclined surface is located on the emergency notification outer surface.

[0011] According to another embodiment of the present disclosure, there is provided an indoor radar device for being connected to an indoor surface of a room, including a first antenna array including at least two antennas, the two antennas being used to be arranged along a direction from the floor to the ceiling of the room, a radar unit in which a distance between the two antennas is 0.5 times a wavelength of 0.001 mm to 12 mm, an emergency notification unit coupled to the radar unit, and a case outer surface including a radar outer surface corresponding to the radar unit and an emergency notification outer surface corresponding to the emergency notification unit and being triggered by a detection target in the room to notify an emergency state.

[0012] In an example of the indoor radar device according to the foregoing embodiment, the emergency notification unit may be used to be connected to a part of the radar unit away from the floor.

[0013] In an example of the indoor radar device according to the foregoing embodiment, the radar outer surface includes a first transmission surface, the first antenna array is adjacent to or provided on the first transmission surface, and the first transmission surface is perpendicular to the floor.

[0014] In an example of the indoor radar device according to the foregoing embodiment, the case outer surface may further include two mounting surfaces for being connected to the indoor surface, and a mounting surface angle between the two mounting surfaces may be 70 degrees to 110 degrees.

[0015] In an example of the indoor radar device according to the foregoing embodiment, the case outer surface may further include at least one mounting surface for being connected to the indoor surface, the radar outer surface may include a first transmission surface, the first antenna array is adjacent to or provided on the first transmission surface, the first transmission surface is used to face obliquely to the floor, and a first angle between the first transmission surface and the mounting surface may be 5 degrees to 75 degrees.

[0016] In an example of the indoor radar device according to the foregoing embodiment, the indoor radar device may be used to detect whether a detection target satisfies a fall condition, and the distance between the indoor radar device and the ground may be 90 cm or less.

[0017] According to another embodiment of the present disclosure, there is provided an indoor event detection system including at least one indoor radar device that is used to be provided on at least one indoor surface of at least one room and includes at least one case outer surface including an upward slope, at least one door closing detection device that is used to be provided in the room, and a control center that is communicatively connected to the indoor radar device and the door closing detection device by wire or wirelessly. The indoor event detection system is configured to detect, by the door closing detection device, whether the door of the room starts to be in a closed state operated inside the room; when it is detected that the door starts to be in a closed state, the indoor radar device performs occupancy detection to determine whether a detection target exists in the room and whether a timeout occupancy condition is satisfied; when it is detected that the door starts to be in a closed state, the indoor radar device performs vital detection to determine whether a danger condition is satisfied; and when at least one of the timeout occupancy condition and the danger condition is satisfied, determine that an indoor danger event exists in the room and issue an alarm.

[0018] In an example of the indoor event detection system according to the foregoing embodiment, the room may be one of a toilet, a bathroom, and a dressing room.

[0019] In an example of the indoor event detection system according to the foregoing embodiment, the indoor surface may be a wall surface of the room or a surface that is not parallel to the ground in the room. The indoor radar device may further include a first antenna array. The case outer surface may further include a first transmission surface. The first antenna array is adjacent to or provided on the first transmission surface. The first transmission surface is used to face the heart of the detection target, and the distance between the indoor radar device and the ground may be greater than 70 cm.

[0020] In an example of the indoor event detection system according to the foregoing embodiment, the door may include a driving side and an opening side, the door closing detection device may include a first detection member and a second detection member, the first detection member is used to be provided at the upper end of the opening side, the second detection member is used to be provided on the indoor surface, and the first detection member and the second detection member are used to detect the distance between each other. When the door is in the closed state, the first detection member and the second detection member are provided close to each other.

[0021] In an example of the indoor event detection system according to the foregoing embodiment, the number of indoor surfaces may be two, the two indoor surfaces form a corner, the indoor radar device is provided at the corner, and further includes a radar unit and an emergency notification unit connected to a part of the radar unit away from the ground and used to trigger an emergency notification by a detection target in the room.

[0022] In an example of the indoor event detection system according to the foregoing embodiment, the door may include a driving side and an opening side, the door lock assembly of the room includes a first lock member provided on the opening side and a second lock member provided on the indoor surface, and the door closing detection device is provided on at least one of the first lock member and the second lock member and is used to detect whether the door is in the closed state.

[0023] According to other embodiments of the present disclosure, there is provided an indoor event detection method, including: detecting, by a door closing detection device provided in a room, whether the door of the room starts to enter a closed state operated inside the room; when it is detected that the door starts to enter the closed state, an indoor radar device provided in the room and including an outer case surface with an upward slope performs occupancy detection to determine whether a detection target exists in the room and whether a timeout occupancy condition is satisfied; when it is detected that the door starts to enter the closed state, the indoor radar device performs vital detection to determine whether a danger condition is satisfied; and when at least one of the timeout occupancy condition and the danger condition is satisfied, determining that an indoor danger event exists in the room and issuing an alarm.

[0024] In an embodiment of the indoor event detection method according to the foregoing embodiment, the indoor event detection method further includes pairing an indoor radar device and a control center through communication, and the indoor radar device and the control center are wirelessly communicatively connected by at least one of frequency division multiplexing and time division multiplexing.

[0025] In an embodiment of the indoor event detection method according to the foregoing embodiment, the room may be a toilet, and is divided into a door closing detection space close to the door and an occupancy detection space close to the toilet in the room. The indoor event detection method may further include detecting, by the indoor radar device, whether the door starts to enter a closed state operated inside the room, and this detection includes detecting whether the detection target moves from the door closing detection space to the occupancy detection space.

[0026] In an embodiment of the indoor event detection method according to the foregoing embodiment, the timeout occupancy condition may include that the occupancy time value of the detection target in the room is greater than the occupancy time threshold, and the occupancy time threshold may be between 3 minutes and 90 minutes.

[0027] In an example of the indoor event detection method according to the foregoing embodiment, performing vital detection may include at least one of performing posture detection, performing heart rate detection, and performing respiration detection. Performing posture detection includes detecting whether a detection target satisfies a stationary condition and detecting whether a fall condition is satisfied based on at least five sampling points by an indoor radar device, and obtaining a posture detection result. Performing heart rate detection includes detecting a time-related heart rate and determining whether an abnormal heart rate condition is satisfied, and obtaining a heart rate detection result. Performing respiration detection includes detecting a time-related respiration rate and determining whether an abnormal respiration condition is satisfied, and obtaining a respiration detection result. The indoor event detection method further includes the indoor radar device transmitting and storing the heart rate and respiration rate to a control center, and determining whether a danger condition is satisfied based on at least one corresponding one of the posture detection result, the heart rate detection result, and the respiration detection result.

[0028] In an example of the indoor event detection method according to the foregoing embodiment, performing vital detection further includes determining whether a ratio change value, which is a time change value of the ratio of the heart rate to the respiration rate, is greater than a ratio change threshold, and obtaining a ratio change result, and further determining whether a danger condition is satisfied based on the ratio change result.

[0029] In an example of the indoor event detection method according to the foregoing embodiment, an indoor danger event is one of a plurality of danger levels including an intervention level and a severity level. An indicator lamp is used to respectively display a corresponding plurality of indication states according to the plurality of danger levels. An alarm includes the indicator lamp displaying an indication state. When it is determined that there is an indoor danger event in a room, the indoor event detection method further includes at least one of a control center and a mobile device displaying a rescue route including a route from a rescue device to the room, and the control center packaging the stored heart rate and respiration rate into vital data so that a rescuer can obtain them from at least one of the control center and the mobile device.

Brief Description of the Drawings

[0030]

Figure 1A

Figure 1B

Figure 1C

Figure 1D

Figure 2A

Figure 2B

Figure 2C

Figure 3A

Figure 3B

Figure 4

Figure 5

Figure 6

Figure 7A

Figure 7B

Figure 7C

Figure 7D

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Figure 7F

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Figure 8C-8D

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Figure 9A-9B

Figure 9C-9D

Figure 9E-9F

Figure 10A-10B

Figure 10C

Figure 10D

Modes for Carrying Out the Invention

[0031] Hereinafter, a plurality of embodiments of the present disclosure will be described with reference to the drawings. For the sake of clear description, many practical details will be described in conjunction with the following description. However, it should be understood that these practical details are not applied to limit the present disclosure. That is, in the embodiments of the present disclosure, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and elements are illustrated simply and schematically. Also, overlapping elements may be denoted by the same number.

[0032] Note that terms such as first, second, etc. are only used to describe different elements and are not limitations on the elements themselves. Thus, the first element may be renamed the second element. Also, the combinations of elements in this specification are not combinations that are generally well-known, ordinary, or well-known in this field. Whether the combination relationship can be easily achieved by those skilled in the art in the relevant technical field cannot be determined based on whether the elements themselves are well-known.

[0033] FIG. 1A is a perspective view of the indoor radar device 100 according to the first embodiment of the present disclosure, FIG. 1B is a plan view of the indoor radar device 100 in FIG. 1A, FIG. 1C is a cross-sectional view taken along the section line 1C-1C of the indoor radar device 100 in FIG. 1B, and FIG. 3A is a schematic view of the indoor event detection system 300 according to the third embodiment of the present disclosure. Referring to FIGS. 1A to 1C and FIG. 3A, the indoor radar device 100 according to the first embodiment will be supplementarily described using the indoor event detection system 300 according to the third embodiment. The indoor radar device 100 includes a case outer surface 110 including an attachment surface 113 and upper inclined surfaces 115 and 116. The attachment surface 113 is used to be connected to the indoor surface 978 of the room 900, and the upper inclined surfaces 115 and 116 are used to face obliquely to the ceiling (not shown) of the room 900. As shown in FIG. 1C, the upper inclined surface angle a5 between each of the upper inclined surfaces 115 and 116 and the ground 979 of the room 900 is between 15 degrees and 85 degrees. Thereby, each of the upper inclined surfaces 115 and 116 is a sloped or curved surface structure, which can prevent articles that interfere with the radar signal from being placed or mounted on the indoor radar device 100, and the upper inclined surface angle a5 can enhance the drainage performance based on the water droplet experiment. Specifically, the upper inclined surface angle a5 between the upper inclined surface 115 in FIG. 1C and the ground 979 of the room 900 is 30 degrees. The average surface roughness of the upper inclined surfaces 115 and 116 may be smaller than 5 mm, the contact angle of the upper inclined surfaces 115 and 116 may be larger than 30 degrees, and the indoor surface 978 is the wall surface of the room 900.

[0034] FIG. 1D is a schematic diagram of the first antenna array 120 of the indoor radar device 100 in FIG. 1C. Please refer to FIGS. 1C, 1D and 3A. Specifically, the indoor radar device 100 may further include a first antenna array 120 including antennas 121r and 122r, and the antennas 121r and 122r are used to be arranged along the direction from the ground 979 to the ceiling, and the distance (center-to-center distance) d2 between the antennas 121r and 122r is 0.5 times the wavelength that may be in the range of 0.001 mm to 12 mm. This contributes to the improvement of the resolution in the direction perpendicular to the ground 979 of the first antenna array 120. Specifically, the first antenna array 120 includes transmitting antennas 121t and 122t and receiving antennas 121r, 122r, 123r, 124r, 121v, 122v, 123v, 124v. The antennas 121t, 122t, 121r, 122r, 123r, 124r are real antennas, and the antennas 121v, 122v, 123v, 124v are virtual antennas. Note that in the first antenna array according to the present disclosure, even if the installation positions of the transmitting antenna and the receiving antenna are exchanged, the same virtual antenna effect can be obtained. That is, after the installation positions are exchanged, there are two receiving antennas, which are respectively at the positions of the antennas 121t and 122t that were originally transmitting antennas, and there are four transmitting antennas, which are respectively at the positions of the antennas 121r, 122r, 123r, 124r that were originally receiving antennas.

[0035] Please refer to FIGS. 1A, 1C and 3A. The case outer surface 110 may further include a first transmission surface 111. The first antenna array 120 is adjacent to or provided on the first transmission surface 111. The first transmission surface 111 is used to be closer to the ground 979 than the upper inclined surfaces 115 and 116 and to face the ground 979 obliquely. As shown in FIG. 1C, the first angle a1 between the first transmission surface 111 and the mounting surface 113 may be between 5 degrees and 75 degrees. Thereby, it contributes to the first transmission surface 111 facing towards the heart 800 or the torso of the detection target (detection target), and acquiring the vital signs of the detection target. Also, the first angle a1 may be between 5 degrees and 40 degrees. Specifically, the first angle a1 in FIG. 1C is 30 degrees.

[0036] Please refer to FIGS. 1A and 1B. The indoor radar device 100 may further include a second antenna array 122 (shown in FIG. 3B). The case outer surface 110 may further include a second transmission surface 112. The second antenna array 122 is adjacent to or provided on the second transmission surface 112. The second transmission surface 112 is used to face the ground 979 obliquely. As shown in FIG. 1B, the second angle a2 between the first transmission surface 111 and the second transmission surface 112 may be between 105 degrees and 170 degrees. Thereby, it contributes to expanding the detection range of the indoor radar device 100. Specifically, the second angle a2 in FIG. 1B is about 160 degrees.

[0037] Also, the indoor radar device 100 may be used to detect whether the detection target satisfies the falling condition. The distance d1 between the indoor radar device 100 and the ground 979 may be 90 cm or less. Thereby, for the fall detection of the indoor radar device 100, it is not necessary to consider the standing posture, and it is only necessary to detect that the biological signal returned from near the ground 979 belongs to the sitting or lying-down posture. Therefore, the indoor radar device 100 does not need to use a machine learning algorithm to detect a fall, which contributes to cost savings and applicability to the sizes and layouts of various rooms.

[0038] FIG. 2A is a perspective view of an indoor radar device 200 according to a second embodiment of the present disclosure, FIG. 2B is a plan view of the indoor radar device 200 in FIG. 2A, FIG. 2C is a cross-sectional view taken along a cross-section line 2C-2C of the indoor radar device 200 in FIG. 2B, and FIG. 5 is a schematic view of an indoor event detection system 500 according to a fifth embodiment of the present disclosure. Referring to FIGS. 2A to 2C and FIG. 5, the indoor radar device 200 according to the second embodiment will be subsidiarily described using the indoor event detection system 500 according to the fifth embodiment. The indoor radar device 200 includes a case outer surface 210 including attachment surfaces 213, 214, and an upper inclined surface 215. Each of the attachment surfaces 213, 214 is used to be connected to the indoor surfaces 977, 978 of the room 900, and the upper inclined surface 215 is used to face obliquely the ceiling of the room 900. As shown in FIG. 2C, the upper inclined surface angle a5 between the upper inclined surface 215 and the floor 979 of the room 900 is in the range of 15 degrees to 85 degrees.

[0039] Further, the indoor radar device 200 is used to be connected to the indoor surfaces 977, 978 of the room 900 and further includes a radar unit 230 and an emergency notification unit 240. The radar unit 230 includes a first antenna array 220 including at least two antennas (not shown). The two antennas are used to be arranged along the direction from the floor 979 to the ceiling of the room 900, and the distance between the two antennas (the distance between the centers) is 0.5 times the wavelength in the range of 0.001 mm to 12 mm. The emergency notification unit 240 is coupled (electrically and communicatively connected) to the radar unit 230. The case outer surface 210 includes a radar outer surface 236 corresponding to the radar unit 230 and an emergency notification outer surface 246 corresponding to the emergency notification unit 240 and triggered by the pressing or contact of a detection target in the room 900 to notify an emergency state. Thereby, by reducing the number of devices in the room 900, the penetration rate of the indoor radar device 200 is improved.

[0040] Please refer to FIGS. 2A, 2C and 5. Specifically, the upper inclined surface 215 is a convex arc surface and has a plurality of normal directions. The average surface roughness of the upper inclined surface 215 is less than 5 mm, the contact angle of the upper inclined surface 215 is greater than 30 degrees, and the indoor surfaces 977, 978 are surfaces that are not parallel to the wall surface of the room 900 or the floor 979 in the room 900. This contributes to preventing articles that interfere with the radar signal from being placed or placed on the upper inclined surface 215, and also contributes to the sliding of water droplets and dust so that they do not accumulate on the outer case surface 210 and its upper inclined surface 215, avoiding the influence on the nearby transmission field.

[0041] Please refer to FIGS. 2A to 2C and 5. The total number of the mounting surfaces 213 and 214 is two. The mounting surface angle a3 between the mounting surfaces 213 and 214 may be between 70 degrees and 110 degrees. The upper inclined surface 215 is connected between the mounting surface 213 and the mounting surface 214 and is used to taper along the direction from the ground 979 to the ceiling. This can avoid the influence of the installation position of the indoor radar device 200 on the movement of the detection target in the room 900. Specifically, the mounting surface angle a3 in FIG. 2B is 90 degrees.

[0042] The radar unit 230 includes the first antenna array 220. The radar outer surface 236 includes the first transmission surface 211. The first antenna array 220 is close to the first transmission surface 211. The first transmission surface 211 is used to be closer to the ground 979 than the upper inclined surface 215 and is used to be located in the extending direction from the upper inclined surface 215 to the ground 979 and perpendicular to the ground 979. This requires the indoor radar device 200 to be installed at a slightly lower position, and can achieve both the detection accuracy of the radar and the convenience of use of the emergency notification unit 240.

[0043] The emergency reporting unit 240 is used to be entity-connected to a part away from the ground 979 of the radar unit 230, and the upper inclined surface 215 is located on the emergency reporting outer surface 246. Thereby, the layout design of the indoor radar device 200 is advantageous for improving the detection accuracy of the radar, and the detected person can easily contact the emergency reporting outer surface 246 if necessary. Further, the emergency reporting unit 240 may include movable parts for the detected object or the user to finely adjust the mounting height.

[0044] In addition, after adjustment, the first transmission surface 211 may be used to obliquely face the ground 979 (not shown), and the first angle between the first transmission surface 211 and each of the mounting surfaces 213 and 214 may be between 5 degrees and 75 degrees. Further, the first angle may be between 5 degrees and 40 degrees. Thereby, it is necessary to install the indoor radar device 200 at a slightly higher position, and the detection accuracy of the radar and the usability of the emergency reporting unit 240 can be made compatible.

[0045] Please refer to FIG. 5. The indoor radar device 200 may be used to detect whether the detected object satisfies the falling condition, and the distance d1 between the indoor radar device 200 and the ground 979 is 90 cm or less.

[0046] FIG. 3B is a block diagram of the indoor event detection system 300 in FIG. 3A. Refer to FIGS. 1A, 3A, and 3B. The indoor event detection system 300 according to the third embodiment of the present disclosure includes the indoor radar device 100, the closed door detection device 350, and the control center 360 of the aforementioned first embodiment. The indoor radar device 100 is used to be provided on the indoor surface 978 of the room 900 and includes a case outer surface 110 including upper slopes 115 and 116. The closed door detection device 350 is used to be provided in the room 900 and can be communicatively connected to the indoor radar device 100 by wire or wirelessly. The control center 360 is communicatively connected to the indoor radar device 100 and the closed door detection device 350 by wire or wirelessly. The indoor event detection system 300 is configured such that the closed door detection device 350 detects whether the door 980 of the room 900 starts to enter the closed state when operated inside the room 900, and when it is detected that the door 980 starts to enter the closed state, the indoor radar device 100 performs occupancy detection to determine whether a detection target exists in the room 900 and whether a timeout occupancy condition is satisfied, and when it is detected that the door 980 starts to enter the closed state, the indoor radar device 100 performs vital detection to determine whether a danger condition is satisfied, and when at least one of the timeout occupancy condition and the danger condition is satisfied, it is determined that an indoor danger event exists in the room 900 and an alarm is issued. Accordingly, the indoor event detection system 300 may be used to timely detect an indoor danger event in the room 900 in order to avoid unfortunate events.

[0047] Specifically, the room 900 may be one of a toilet, a bathroom, and a dressing room, and the present disclosure is not limited thereto. Thereby, the indoor event detection system 300 is not suitable for the use of image detection due to factors such as undressing and can be applied to a sealed space where a person stays alone. Note that the indoor event detection system 300 can also be used in a space suitable for the use of image detection alone or in combination with an image system. Specifically, the room 900 in FIG. 3A is a toilet, and the indoor event detection system 300 of the third embodiment can be applied to the control center 360 and one or more rooms 900 (toilets). As shown in FIGS. 3A and 3B, the control center 360 may include a processing unit 361, a display 365, and an indicator lamp 366, and the processing unit 361 includes a cloud indoor event detection module 362. The indoor radar device 100 includes a radar front-end 150 and a processing unit 161. The radar front-end 150 includes a first antenna array 120 and a second antenna array 122. The processing unit 161 includes a local indoor event detection module 162. Both the cloud indoor event detection module 362 and the local indoor event detection module 162 are program codes.

[0048] The indoor event detection system 300 may further include an emergency reporting unit 340 provided for the room 900. The control center 360 is communicatively connected to the indoor radar device 100, the door closing detection device 350, and the emergency reporting unit 340 by wire or wirelessly. The above-mentioned wired communication connection may mean being communicatively connected by the protocol of Ethernet, Internet of Things, CAN, UART, LIN, or RS485. The above-mentioned wireless communication connection may mean being communicatively connected by the protocol of WIFI, BLE, ASK / FSK, or LoRa. The present disclosure is not limited thereto. Also, the control center 360 may be directly communicatively connected to the indoor radar device 100, the door closing detection device 350, and the emergency reporting unit 340 respectively, or may be directly communicatively connected to the indoor radar device 100 and indirectly communicatively connected to the door closing detection device 350 and the emergency reporting unit 340 via the indoor radar device 100.

[0049] The indoor surface 978 may be a surface parallel to the wall surface of the room 900 or a surface not parallel to the ground 979 in the room 900. The indoor radar device 100 further includes a first antenna array 120. The outer case surface 110 further includes a first transmission surface 111. The first antenna array 120 is close to the first transmission surface 111. The first transmission surface 111 is used to face the heart 800 of the detection target. And the distance d1 between the indoor radar device 100 and the ground 979 may be greater than 70 cm. Thereby, the accuracy of vital detection is improved. Also, the distance d1 between the indoor radar device 100 and the ground 979 may be greater than 70 cm and less than or equal to 90 cm. Using one indoor radar device 100, vital detection and fall detection can be achieved simultaneously, thereby saving costs and reducing the complexity of the system.

[0050] The door 980 includes a driving side 985 and an opening side 986. The door closing detection device 350 may include a first detection member 351 and a second detection member 352. The first detection member 351 is used to be provided at the upper end 987 of the opening side 986. The second detection member 352 is used to be provided on the indoor surface 978. And the first detection member 351 and the second detection member 352 are used to detect the distance between each other. When the door 980 is in the closed state, the first detection member 351 and the second detection member 352 are provided close to each other. Thereby, the door closing detection device 350 does not occupy the space of the room 900 and is advantageous in not disturbing the behavior of the object to be detected. Specifically, the door closing detection device 350 may be a Hall Effect, infrared (IR) or microelectromechanical (Mech) detection device. The door 980 may be a pivot door or a sliding door, and the present disclosure is not limited thereto.

[0051] The door lock assembly 983 of the room 900 includes a first lock member 981 provided on the opening side 986 and a second lock member 982 provided on the indoor surface 978.

[0052] Note that after adjustment, the door closing detection device 350 may be provided on at least one of the first lock member 981 and the second lock member 982 (not shown) and used to detect whether the door 980 is in the closed state. For example, the first detection member 351 may be used to be provided inside or on the surface of the first lock member 981. The second detection member 352 may be used to be provided inside or on the surface of the second lock member 982. And the first detection member 351 and the second detection member 352 are used to detect the distance between each other or the movement of the deadbolt. Thereby, integrating the door closing detection device 350 into the first lock member 981 and the second lock member 982 contributes to the improvement of the convenience of installing the indoor event detection system 300.

[0053] FIG. 4 is a schematic diagram of an indoor event detection system 400 according to a fourth embodiment of the present disclosure. Refer to FIGS. 1A and 4. The indoor event detection system 400 according to the fourth embodiment of the present disclosure includes the indoor radar device 100, the door closing detection device 450, and the control center of the first embodiment described above. The indoor radar device 100 is used to be provided on the indoor surface 978 of the room 900 and includes a case outer surface 110 including upper slopes 115 and 116. The door closing detection device 450 is provided in the room 900 and used to be communicatively connected to the indoor radar device 100 by wire or wirelessly. The control center is communicatively connected to the indoor radar device 100 and the door closing detection device 450 by wire or wirelessly. The indoor event detection system 400 is configured such that the door closing detection device 450 detects whether the door 980 of the room 900 starts to be in a closed state in which it is operated within the room 900, and when it is detected that the door 980 starts to be in the closed state, the indoor radar device 100 performs occupancy detection to determine whether a detection target exists in the room 900 and whether a timeout occupancy condition is satisfied, and when it is detected that the door 980 starts to be in the closed state, the indoor radar device 100 performs vital detection to determine whether a danger condition is satisfied, and when at least one of the timeout occupancy condition and the danger condition is satisfied, it is determined that an indoor danger event exists in the room 900 and an alarm is issued.

[0054] Specifically, the room 900 in FIG. 4 is a toilet. The first antenna array 120 of the indoor radar device 100 is close to a first transmission surface 111 for facing the heart 800 of the detection target, and the distance d1 between the indoor radar device 100 and the ground 979 is greater than 70 cm.

[0055] The door closing detection device 450 includes a first detection member 451 and a second detection member 452. The first detection member 451 is used to be provided at the upper end 987 of the open side 986. The second detection member 452 is used to be provided on the indoor surface 978, and the first detection member 451 and the second detection member 452 are used to detect the distance between each other. When the door 980 is in the closed state, the first detection member 451 and the second detection member 452 are provided close to each other.

[0056] The second detection member 452 and the indoor radar device 100 are integrated into one device 453. When the door 980 is in the closed state, the device 453 is close to the upper end 987 of the open side 986. This contributes to the improvement of the convenience of installing the indoor event detection system 400.

[0057] Please refer to FIGS. 2A and 5. The indoor event detection system 500 according to the fifth embodiment of the present disclosure includes the indoor radar device 200, the door closing detection device 550, and the control center of the aforementioned second embodiment. The indoor radar device 200 is used to be provided on the indoor surface 978 of the room 900 and includes a case outer surface 210 including an upper slope 215. The door closing detection device 550 is used to be provided in the room 900 and is communicatively connected to the indoor radar device 200 by wire or wirelessly. The control center is communicatively connected to the indoor radar device 200 and the door closing detection device 550 by wire or wirelessly. The indoor event detection system 500 is used to execute: when the door closing detection device 550 detects whether the door 980 of the room 900 starts to be in the closed state operated within the room 900; when it is detected that the door 980 starts to be in the closed state, the indoor radar device 200 executes occupancy detection to determine whether there is a detection target in the room 900 and determine whether the timeout occupancy condition is satisfied; when it is detected that the door 980 starts to be in the closed state, the indoor radar device 200 executes vital detection to determine whether the danger condition is satisfied; when at least one of the timeout occupancy condition and the danger condition is satisfied, it is determined that there is an indoor danger event in the room 900 and an alarm is issued.

[0058] Specifically, the room 900 in FIG. 5 is a toilet. The first antenna array 220 of the indoor radar device 200 is close to the first transmission surface 211 for facing the heart 800 of the detection target, and the distance d1 between the indoor radar device 200 and the ground 979 is greater than 70 cm.

[0059] The number of the indoor surfaces 977 and 978 is two in total. The indoor surfaces 977 and 978 form a corner. The indoor radar device 200 is provided at the corner and includes a radar unit 230 and an emergency reporting unit 240 entity - connected to a part of the radar unit 230 away from the ground 979 and used to report an emergency triggered by a detection target in the room 900. Thereby, the installation position of the indoor radar device 200 can avoid affecting the movement of the detection target in the room 900 and provides convenience for installation.

[0060] The door - closing detection device 550 includes a first detection member 551 and a second detection member 552. The first detection member 551 is used to be provided at the upper end 987 of the open side 986, the second detection member 552 is used to be provided on the indoor surface 978, and the first detection member 551 and the second detection member 552 are used to detect the distance between each other. When the door 980 is in the closed state, the first detection member 551 and the second detection member 552 are provided close to each other.

[0061] The indoor radar device 200 may be used to detect whether a detection target satisfies a fall condition. The distance d1 between the indoor radar device 200 and the ground 979 is 90 cm or less. Further, for fall detection, it is not necessary to consider the standing posture, and it is only necessary to detect that the biological signal returned from the vicinity approaching the ground 979 belongs to the sitting or lying posture. Therefore, it is not necessary to perform calculations using a common fall recognition algorithm, such as a convolutional neural network (CNN) or a recurrent neural network (RNN), to obtain and classify feature values. This is advantageous for saving the time of model training and can be applied to the sizes and layouts of various rooms. Also, since it targets the sitting or lying posture, it excludes living bodies that move on the ground 979 daily, such as cats and dogs. Table 1 below shows data when the first transmission surface 211 of the indoor radar device 200 in the indoor event detection system 500 is adjusted and the first angle between each of the mounting surfaces 213 and 214 is 37.5 degrees (not shown), and the most difficult-to-detect and severe situation where the detection target has its back turned to the indoor radar device 200 is used. As can be seen from Table 1, dogs and cats can be recognized through the heart rate, and it is possible to accurately recognize whether the detection target is a person. Therefore, it is not necessary to construct a classification and a master database.

Table 1

[0062] Note that the indoor event detection system according to the present disclosure may include an arrangement method of a radar device and a door closing detection device in a control center and at least two rooms 900 of the third to fifth embodiments.

[0063] FIG. 6 is a flowchart of an indoor event detection method 600 according to a sixth embodiment of the present disclosure. Refer to FIGS. 1A, 3A, and 6. The indoor event detection method 600 includes steps 620, 630, 640, 650, 652, 660, and 670. Step 620 includes detecting whether the door closing detection device 350 provided in the room 900 has changed or started to change from the open state of the door 980 of the room 900 to the closed state operated within the room 900. When it is detected in step 620 that the door 980 has started to close, steps 630 and 640 are executed, and when it is detected that the door 980 has started to change to the open state, the execution of steps 630 and 640 can be stopped. Step 630 includes the indoor radar device 100 provided in the room 900 performing occupancy detection. After step 630, step 650 is executed. Step 650 includes determining whether a detection target exists in the room 900 and determining whether a timeout occupancy condition is satisfied. The indoor radar device 100 includes a case outer surface 110 including upper slopes 115 and 116. Step 640 includes the indoor radar device 100 performing vital detection. After step 640, step 652 is executed, and step 652 includes determining whether a danger condition is satisfied based on the vital detection result of step 640. After steps 650 and 652, step 660 is executed. Step 660 includes determining whether an indoor danger event exists in the room 900 based on whether the timeout occupancy condition and the danger condition (or at least one of them) are satisfied. When it is determined that an indoor danger event exists in the room 900, step 670 including issuing an alarm is executed. Thereby, the indoor event detection method 600 may be used to timely detect an indoor danger event in the room 900 in order to avoid regrets. Note that the alarm may be displayed on the control center 360, the room 900, or the mobile device of the rescuer by at least one of the methods of an indicator lamp, a display image, display characters, and sound, and the present disclosure is not limited thereto.

[0064] Specifically, the indoor event detection method 600 may further include step 610. Step 610 includes the indoor radar device 100 and the control center 360 being paired through communication, and the indoor radar device 100 and the control center 360 are wirelessly connected through at least one of frequency division multiplexing and time division multiplexing. This can avoid the mutual interference of the multiple indoor radar devices 100 in each of the multiple rooms 900. Specifically, when there are multiple sets of indoor radar devices 100 in the indoor event detection system 300, the wireless communication units of each indoor radar device 100 all have a specific identification code (ID), so that they can communicate with the control center 360 to perform the aforementioned pairing, detect the inability to communicate, or set the multi-mode. In addition, when it is not detected in step 620 that the door 980 has started to be in the closed state while being operated within the room 900, the indoor radar device 100 may be in the standby polling or continuous detection mode.

[0065] Please refer to FIGS. 3A and 6. The room 900 may be a toilet, and is divided into a closed door detection space 971 adjacent to the door 980 and an occupancy detection space 972 adjacent to the toilet 990 in the room 900. By the edge 973 shown in FIG. 3A, the closed door detection space 971 and the occupancy detection space 972 are partitioned. Step 620 of the indoor event detection method 600 may further include the indoor radar device 100 detecting whether the door 980 has started to be in the closed state while being operated within the room 900. This detection includes detecting whether the detected object has moved from the closed door detection space 971 to the occupancy detection space 972. This can avoid false alarms caused by the detected object not being able to close the door or lock the key due to poor physical condition, or the situation where only the cleaner enters the room 900 for cleaning. In addition, the detected object may be alerted in a voice, indicator lamp, or image manner that the door is not closed or the key is not locked.

[0066] FIG. 7A, FIG. 7B, FIG. 7C, FIG. 7D, FIG. 7E and FIG. 7F are schematic diagrams of detection when closing the door from the inside in step 620 of the indoor event detection method 600 of the sixth embodiment, and each of FIGS. 7A to 7F is related to the parameters related to the heart rate and the parameters related to the respiration rate detected in the door closing detection space 971 and the occupancy detection space 972 in different operating states for the detection target in the room 900. Note that the horizontal axis in FIGS. 7A to 10D is time, the unit thereof may be seconds or other units after processing, the vertical axis is the parameter, and it may be the radar echo signal after processing. Please refer to FIGS. 7A to 7F. FIG. 7A is the parameter detected when the inside of the room 900 is empty or there is no person or animal. FIG. 7B is the parameter detected in the process of the detection target entering the room 900 after opening the door 980. When the detection target enters, since the door 980 has a large speed and angle change, a clear signal (not shown) of the door 980 can be seen in the radar point cloud, and the door closing detection space 971 and the occupancy detection space 972 start to detect the signals of respiration and heartbeat. FIG. 7C is the parameter detected in the process of the detection target moving from the door closing detection space 971 to the occupancy detection space 972. FIG. 7D is the parameter detected in the process of the detection target using the toilet in the occupancy detection space 972, and the door closing detection space 971 does not generate a signal when the detection target uses the toilet in the occupancy detection space 972. FIG. 7E is the parameter detected in the process of the detection target finishing using the toilet in the occupancy detection space 972 and moving to the door closing detection space 971 after standing up, and FIG. 7F is the parameter detected after the detection target leaves the room 900.

[0067] Please refer to FIG. 6. The timeout occupancy condition in step 650 may include that the occupancy time value of the detection target in the room 900 is greater than the occupancy time threshold, and the occupancy time threshold may be between 3 minutes and 90 minutes. Thereby, the optimal intervention time for deep respiration for a long time can be satisfied to be 90 minutes or less, and the optimal intervention time for the abnormality combining the heart rate and respiration can be satisfied to be 5 minutes or less. Also, the number of occupancy time thresholds may be plural, and the larger the occupancy time threshold is, the stronger the alarm corresponds to.

[0068] Figures 8A, 8B, 8C, 8D, and 8E are schematic diagrams of occupancy detection in step 650 of the indoor event detection method 600 of the sixth embodiment, and each of Figures 8A to 8E is a parameter related to the heart rate and a parameter related to the respiratory rate detected in different cases in the room 900. Please refer to Figures 8A to 8E. Figure 8A is a parameter detected when the subject in the room 900 is using the toilet and not using the smartphone at the same time. Figure 8B is a parameter detected when the subject in the room 900 is using the smartphone while using the toilet. When the subject uses the toilet, it can be clearly detected that there is an organism occupying the room 900. The indoor event detection method 600 according to the present disclosure can filter out the minute movements of the subject and avoid false judgment events caused by the minute movements of operating the smartphone being integrated into the heart rate signal. Figure 8C is a parameter detected when the subject in the room 900 is in poor physical condition. Compared with Figures 8A and 8B, it can be seen that there is an obvious difference between Figure 8C and the previous two with the naked eye. Therefore, it can be determined whether there is an indoor danger event in the room 900 in step 660. Figure 8D is a parameter detected when the toilet paper in the room 900 shakes slightly, and Figure 8E is a parameter detected when the toilet paper in the room 900 shakes violently. Compared with Figures 8A and 8B, the indoor event detection method 600 according to the present disclosure can recognize the environmental perturbation of the non-biological signal on the premise that there is no door closing signal.

[0069] Performing vital detection in step 640 may include performing steps 642, 644, 646 (or at least one of them). Step 642 includes performing posture detection. Performing this posture detection includes the indoor radar device 100 detecting whether the object to be detected meets the stationary condition and whether it meets the falling condition based on at least five sampling points, and obtaining a posture detection result. Step 644 includes performing heart rate detection. Performing this heart rate detection includes detecting a time-related heart rate, determining whether an abnormal heart rate condition is met, and obtaining a heart rate detection result. Step 646 includes performing respiration detection. Performing this respiration detection includes detecting a time-related respiration rate, determining whether an abnormal respiration condition is met, and obtaining a respiration detection result. The indoor event detection method 600 may further include step 654 in which the indoor radar device 100 transmits and stores the heart rate and respiration rate to the control center 360. Step 652 includes determining whether a dangerous condition is met based on the respective posture detection result, heart rate detection result, and respiration detection result of steps 642, 644, 646. Step 660 includes determining whether there is an indoor dangerous event in room 900 based on whether the timeout occupancy condition and the dangerous condition are met. Thus, for example, in a normal quiet state, the normal respiration rate of an adult is usually 12 to 20 times per minute, and the steady reference line to which the object to be detected belongs in the previous period can be statistically calculated. The changes in respiration acceleration and shallow breathing themselves may be external manifestations of anxiety, and long-term deep breathing may be an external manifestation of chronic obstructive pulmonary disease (COPD), COVID-19, or asthma. The abnormal respiration condition in step 646 of the indoor event detection method 600 may cover situations of respiration acceleration, shallow breathing, long-term deep breathing, respiration deceleration, or cessation. In addition, when the heart beat and / or respiration are abnormal, the distance d2 between antenna 121r and antenna 122r in the first antenna array 120 is 0.5 times the wavelength, and extracting at least five sampling points for the object to be detected is advantageous for detecting whether it falls in step 642.

[0070] Figures 9A, 9B, 9C, 9D, 9E and 9F are schematic diagrams of vital detection (specifically, heart rate detection and respiration detection in steps 644 and 646) in step 640 of the indoor event detection method 600 of the sixth embodiment, and each of Figures 9A to 9F is a parameter related to the heart rate detected in a different state for the detection target in room 900 and a parameter related to the respiration rate. Refer to Figures 9A to 9F. Figure 9A shows the parameters detected when room 900 is empty. Figure 9B shows the parameters detected when the detection target in room 900 is using the toilet, not paying attention to other matters, with vital signs stable and no suspicion of danger. Figure 9C shows the parameters detected when the detection target in room 900 is using a smartphone while using the toilet and with vital signs stable and no suspicion of danger. Among them, there are phenomena such as the detection target moving using the smartphone, and the changes in heart rate and respiration are significant. Figure 9D shows the parameters detected when the heart rate and respiration of the detection target in room 900 slow down, and based on this, it is speculated that the detection target may pose a life risk due to heart failure or dyspnea, and an alarm is issued in step 670. Figure 9E shows the parameters when the heart rate and respiration of the detection target in room 900 cannot be detected (in step 650, it is determined that the detection target exists in room 900), and based on this, it is speculated that the detection target may have suffered from heart failure, dyspnea, shock, respiratory arrest or death, and an alarm is issued in step 670. Figure 9F shows the parameters detected when the heart rate and respiration of the detection target in room 900 slow down, and based on this, it is speculated that the detection target may pose a life risk due to heart failure or dyspnea. In this case, the detection target may have triggered the emergency reporting unit 340, and an alarm is issued in step 670.

[0071] Performing vital detection in step 640 may include performing steps 642, 644, 646, 648 (or at least one of them). Step 648 includes determining whether the ratio change value is greater than the ratio change threshold and obtaining a ratio change result that is the time change value of the ratio of the heart rate to the respiratory rate. Step 652 includes determining whether a dangerous condition is met based on the posture detection result, the heart rate detection result, the respiration detection result, and the ratio change result. Step 660 includes determining whether there is an indoor dangerous event in room 900 based on whether the timeout occupancy condition and the dangerous condition are met. Thus, in a normal quiet situation, the heart rate is 60 to 100 beats per minute and the respiratory rate is 12 to 20 breaths per minute, so the heart rate and the respiratory rate usually show a certain ratio. A sudden abnormal change in the ratio change value of the heart rate and the respiratory rate may indicate potential problems such as respiratory distress, accelerated heart rate, and heart failure, or for example, myocardial infarction accompanied by irregular heart rate in respiratory distress. In step 648 of the indoor event detection method 600, the ratio change threshold helps to detect situations where intervention and rescue may be required as described above.

[0072] The indoor danger event may be one of a plurality of danger levels including an intervention level and a severity level. The severity level may be that the vital signal of the detection target in the room 900 disappears or the emergency reporting unit 340 is triggered. The indicator lamp 366 of the control center 360 is used to respectively display a corresponding plurality of indicator states according to the danger level. The indicator lamp 366 may be an LED indicator lamp, and the intervention level may display a first color, and the severity level may display a second color. The alarm in step 670 includes that the indicator lamp 366 displays an indicator state. The indoor event detection method 600 may further include steps 672 and 674. When it is determined in step 660 that there is an indoor danger event in the room 900, steps 672 and 674 may be further executed. Step 672 includes displaying a rescue route including the route from the first aid device to the room 900 on at least one of the display 365 of the control center 360 and the mobile device of the rescuer. Step 674 includes that the rescuer obtains from at least one of the control center 360 and the mobile device, and further includes packaging the heart rate and respiratory rate stored by the control center 360 into vital data so as to further assist the medical staff in making a rescue decision. Thereby, the first aid device may include a first aid bag and an AED (automated external defibrillator). When the control center 360 introduces the position of the first aid device, a rescue route can be planned according to the position of the nearest first aid device.

[0073] The indoor event detection method 600 may further include steps 680 and 682. Step 680 includes that the indoor radar device 100 detects whether the water tank 998 in the room 900 meets the abnormal water leakage condition. The room 900 is a toilet, and the indoor radar device 100 in step 680 can detect once every time interval (for example, 30 minutes). When the abnormal water leakage condition is met in step 680, step 682 is executed. Step 682 includes determining that the water tank 998 is in a water leakage state and further being able to report to the control center 360. Thereby, the indoor event detection method 600 can provide a wider range of event detection for the room 900.

[0074] Figures 10A, 10B, 10C, and 10D are schematic diagrams of water leakage detection in steps 680 and 682 of the indoor event detection method 600 according to the sixth embodiment, and each of Figures 10A to 10D shows related parameters of water leakage (water dripping or falling) detected for the water tank 998 in the room 900. Please refer to Figures 10A to 10D. Figure 10A shows the parameters detected when the water tank 998 is stationary and there is no water leakage. Figure 10B shows the parameters detected during the process of closing the lid (not shown) of the toilet 990. Figure 10C shows the parameters detected during the drainage process of the toilet 990. Figure 10D shows the parameters detected during the water leakage or water replenishment process of the water tank 998.

[0075] Although the present disclosure is disclosed in the embodiments as described above, the above embodiments are not used to limit the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure is in accordance with those defined by the scope of the patent application attached later.

Description of Reference Numerals

[0076] 100, 200: Indoor radar device 110, 210: Outer case surface 111, 211: First transmission surface 112: Second transmission surface 113, 213, 214: Mounting surface 115, 116, 215: Upper inclined surface 120, 220: First antenna array 121t, 122t, 121r, 121v, 122r, 122v, 123r, 123v, 124r, 124v: Antenna 122: Second antenna array 150: Radar front end 161, 361: Processing unit 162: Local indoor event detection module 230: Radar unit 236: Radar outer surface 240, 340: Emergency reporting unit 246: Emergency reporting outer surface 300, 400, 500: Indoor event detection system 350, 450, 550: Door closing detection device 351, 451, 551: First detection member 352, 452, 552: Second detection member 360: Control center 362: Cloud indoor event detection module 365: Display 366: Indicator lamp 453: Equipment 600: Indoor event detection method 610, 620, 630, 640, 642, 644, 646, 648, 650, 652, 654, 660, 670, 672, 674, 680, 682: Steps 800: Heart 900: Room 971: Door closing detection space 972: Occupancy detection space 973: Edge 977, 978: Indoor surface 979: Floor 980: Door 981: First locking member 982: Second locking member 983: Door lock assembly 985: Driving side 986: Release side 987: Upper end 990: Toilet 998: Water tank a1: First angle a2: Second angle a3: Mounting surface angle a5: Upper inclined surface angle d1, d2: Distance

Claims

1. An indoor radar device including a case outer surface, wherein the case outer surface has at least one mounting surface for connection to an indoor surface of a room, and an upward slope that is used to face obliquely toward the ceiling of the room and has an upward slope angle between the floor of the room and the ceiling of 15 degrees to 85 degrees, An indoor radar device including the above.

2. The indoor radar device according to claim 1, wherein the upward slope is a convex arc surface and has a plurality of normal directions, the average surface roughness is less than 5 mm, the contact angle is greater than 30 degrees, and the indoor surface is a surface that is not parallel to the wall surface of the room or the floor in the room.

3. The indoor radar device according to claim 1, further including a first antenna array including at least two antennas, wherein the two antennas are used to be arranged along the direction from the floor to the ceiling, and the distance between the two antennas is 0.5 times the wavelength of 0.001 mm to 12 mm.

4. The case outer surface further includes a first transmission surface, the first antenna array is adjacent to or provided on the first transmission surface, the first transmission surface is used to be closer to the floor than the upward slope, is used to face obliquely toward the floor, and has a first angle between the mounting surface of 5 degrees to 75 degrees. The indoor radar device according to claim 3.

5. The number of the at least one mounting surface is two, the mounting surface angle between the two mounting surfaces is 70 degrees to 110 degrees, the upward slope is connected between the two mounting surfaces, and is used to taper along the direction from the floor to the ceiling. The indoor radar device according to claim 1.

6. A radar unit, and an emergency notification unit that is triggered by a detection target in the room and is used to notify an emergency state and is used to be connected to a part of the radar unit away from the floor, further including, The radar outer surface of the case outer surface corresponds to the radar unit, the emergency notification outer surface of the case outer surface corresponds to the emergency notification unit, and the upward slope is located on the emergency notification outer surface. The indoor radar device according to claim 1.

7. An indoor radar device for connection to an indoor surface of a room, A radar unit including a first antenna array including at least two antennas, wherein the two antennas are used to be arranged along a direction from the floor to the ceiling of the room, and the distance between the two antennas is 0.5 times the wavelength of 0.001 mm to 12 mm, An emergency notification unit coupled to the radar unit, A case outer surface including a radar outer surface corresponding to the radar unit, and an emergency notification outer surface corresponding to the emergency notification unit and triggered by a detection target in the room to notify an emergency state, An indoor radar device comprising:

8. The indoor radar device according to claim 7, wherein the emergency notification unit is used to be connected to a part of the radar unit away from the floor.

9. The indoor radar device according to claim 7, wherein the radar outer surface includes a first transmission surface, the first antenna array is adjacent to or provided on the first transmission surface, and the first transmission surface is perpendicular to the floor.

10. The indoor radar device according to claim 7, wherein the case outer surface further includes two mounting surfaces for being connected to the indoor surface, and the mounting surface angle between the two mounting surfaces is 70 degrees to 110 degrees.

11. The indoor radar device according to claim 7, wherein the case outer surface further includes at least one mounting surface for being connected to the indoor surface, the radar outer surface includes a first transmission surface, the first antenna array is adjacent to or provided on the first transmission surface, the first transmission surface is used to face obliquely to the floor, and the first angle between the first transmission surface and the mounting surface is 5 degrees to 75 degrees.

12. The indoor radar device according to claim 7, wherein the indoor radar device is used to detect whether the detection target satisfies a fall condition, and the distance between the indoor radar device and the floor is 90 cm or less.

13. An indoor event detection system, At least one indoor radar device including at least one case outer surface provided on at least one indoor surface of at least one room and including an upward slope, At least one closed door detection device used to be provided in the at least one room, A control center communicatively connected to the at least one indoor radar device and the at least one closed door detection device by wire or wirelessly, Including The indoor event detection system uses the door closing detection device to detect whether the door of the room has started to enter the closed state and is operated inside the room when it is detected that the door has started to enter the closed state, the indoor radar device executes occupancy detection to determine whether a detection target exists in the room and whether a timeout occupancy condition is satisfied when it is detected that the door has started to enter the closed state, the indoor radar device executes vital detection to determine whether a danger condition is satisfied when at least one of the timeout occupancy condition and the danger condition is satisfied, it is determined that an indoor danger event exists in the room and an alarm is issued An indoor event detection system used to execute the above.

14. The indoor event detection system according to claim 13, wherein the room is one of a toilet, a bathroom, and a dressing room.

15. The indoor surface is a surface that is not parallel to the wall surface of the room or the ground in the room. The indoor radar device further includes a first antenna array. The outer surface of the case further includes a first transmission surface. The first antenna array is adjacent to or provided on the first transmission surface. The first transmission surface is used to face the heart of the detection target, and the distance between the indoor radar device and the ground is greater than 70 cm. The indoor event detection system according to claim 13.

16. The door includes a driving side and an opening side. The door closing detection device includes a first detection member and a second detection member. The first detection member is used to be provided at the upper end of the opening side. The second detection member is used to be provided on the indoor surface. The first detection member and the second detection member are used to detect the distance between each other when the door is in the closed state, the first detection member and the second detection member are provided close to each other. The indoor event detection system according to claim 13.

17. the number of the at least one indoor surface is two, the two indoor surfaces form a corner, and the indoor radar device is provided at the corner a radar unit An emergency reporting unit that is triggered by the detection target in the room and used to report an emergency state, and is used to be connected to a part of the radar unit that is away from the ground. The indoor event detection system according to claim 13, further comprising.

18. The door includes a driving side and an opening side, and the door lock assembly of the room includes a first lock member provided on the opening side and a second lock member provided on the indoor surface. The closed door detection device is provided on at least one of the first lock member and the second lock member and is used to detect whether the door is in the closed state. The indoor event detection system according to claim 13.

19. An indoor event detection method, comprising: Detecting, by a closed door detection device provided in a room, whether the door of the room has started to be in a closed state operated inside the room; When it is detected that the door has started to be in the closed state, an indoor radar device provided in the room and including an outer surface of a case including an upward slope performs occupancy detection to determine whether there is a detection target in the room, and determine whether a timeout occupancy condition is satisfied; When it is detected that the door has started to be in the closed state, the indoor radar device performs vital detection to determine whether a danger condition is satisfied; When at least one of the timeout occupancy condition and the danger condition is satisfied, it is determined that there is an indoor danger event in the room and an alarm is issued; An indoor event detection method, comprising.

20. The indoor event detection method according to claim 19, further comprising that the indoor radar device and the control center are paired by communication, and the indoor radar device and the control center are wirelessly connected by communication by at least one of frequency division multiplexing and time division multiplexing.

21. The room is a toilet and is divided into a closed door detection space adjacent to the door and an occupancy detection space adjacent to the toilet of the room. The indoor event detection method includes: The indoor event detection method according to claim 19, further comprising detecting, by the indoor radar device, whether the door has started to be in the closed state operated inside the room, and the detection includes detecting whether the detection target has moved from the closed door detection space to the occupancy detection space.

22. The timeout occupancy condition includes that the occupancy time value of the detected object in the room is greater than an occupancy time threshold value between 3 minutes and 90 minutes. The indoor event detection method according to claim 19.

23. Executing the vital detection includes at least one of executing posture detection, executing heart rate detection, and executing respiration detection. Executing the posture detection includes that the indoor radar device detects whether the detected object satisfies a stationary condition and whether it satisfies a fall condition based on at least five sampling points, and obtaining a posture detection result. Executing the heart rate detection includes detecting a time-related heart rate and determining whether an abnormal heart rate condition is satisfied, and obtaining a heart rate detection result. Executing the respiration detection includes detecting a time-related respiration rate and determining whether an abnormal respiration condition is satisfied, and obtaining a respiration detection result. The indoor event detection method includes that the indoor radar device transmits and stores the heart rate and the respiration rate to a control center. determining whether the dangerous condition is satisfied based on at least one corresponding one of the posture detection result, the heart rate detection result, and the respiration detection result. The indoor event detection method according to claim 19 further includes this.

24. Executing the vital detection includes determining whether a ratio change value, which is a time change value of the ratio between the heart rate and the respiration rate, is greater than a ratio change threshold value, and obtaining a ratio change result. further includes determining whether the dangerous condition is satisfied based on the ratio change result. The indoor event detection method according to claim 23 further includes this.

25. The indoor dangerous event is one of a plurality of danger levels including an intervention level and a severity level. The indicator lamp is used to respectively display a corresponding plurality of indication states according to the plurality of danger levels. The alarm includes that the indicator lamp displays the indication state. The indoor event detection method includes that when it is determined that the indoor dangerous event exists in the room, at least one of the control center and the mobile device displays a rescue route including a route from the emergency device to the room. Packaging the heart rate and the respiratory rate stored in the control center into vital data so that a rescuer can obtain them from at least one of the control center and the mobile device; The indoor event detection method according to claim 23, further comprising.

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