A monitoring bed and method of using the same

Abstract

The present invention discloses a monitoring bed and a method for using the same. A thermal imaging device with an off-axis lens is installed on a side of the headboard backboard facing the sleeping surface of the bed board and located in a corresponding area of ​​the center line of the bed board backboard in the vertical direction, so that the thermal imaging has a large depth of field, and can obtain all the action information of the user when sleeping on the bed, greatly improving the monitoring accuracy and integrity of the thermal imaging device. At the same time, the monitoring bed includes a processing device, which can perform corresponding alarm actions according to the information obtained by the thermal imaging device to ensure the safety of the user when sleeping on the bed.

Description

Technical Field

[0001] The present invention relates to the technical field of household products, and in particular to a monitoring bed and a use method thereof. Background Art

[0002] The bed is one of the essential furniture for modern people's homes and occupies a large proportion in people's lives. In order to ensure the safety of people when they sleep in bed, and at the same time limited by the structural design of the bed, manufacturers can only install monitoring devices such as cameras on the backboard of the bed for loading and unloading and adjustment. However, due to the large length of the bed, the existing monitoring equipment cannot have enough depth of field to obtain all the information of the entire bed, and has a large monitoring blind area, which greatly reduces the accuracy of its monitoring. Summary of the invention

[0003] The main purpose of the present invention is to provide a monitoring bed and a method for using the same, so as to solve the problems of large blind areas and low accuracy of monitoring equipment on existing beds.

[0004] The present invention proposes a monitoring bed, comprising a thermal imaging device and a bed body, wherein the thermal imaging device comprises an optical imaging objective lens, and the lens of the optical imaging objective lens is an off-axis lens. The bed body comprises a headboard and a sleeping bed board, and the thermal imaging device is installed on a side of the headboard facing the use surface of the sleeping bed board, and the off-axis lens faces the use surface of the sleeping bed board.

[0005] Furthermore, the sleeping bed board is connected to the headboard, the eccentric angle of the eccentric lens is 5-45 degrees, the relative height between the eccentric lens and the sleeping bed board is 20-100 cm, the eccentric angle and the relative height are negatively correlated, and the eccentric lens is located in the corresponding area of ​​the center line of the headboard in the vertical direction.

[0006] Furthermore, a fixing structure is provided on the side of the headboard facing the use surface of the sleeping bed board, and the thermal imaging device is provided with a mounting structure, and the fixing structure cooperates with the mounting structure.

[0007] Furthermore, the fixing structure is a through slot, and the mounting structure includes a fixing plate, bolts, nuts and gaskets. The fixing plate is fixed to the back of the thermal imaging device, the bolts are fixedly arranged on the fixing plate, the gasket is arranged between the nut and the headboard, and the bolt passes through the through slot and completes the installation of the thermal imaging device on the headboard through the connection with the nut.

[0008] Furthermore, the monitoring bed also includes a distance sensor, and the distance sensor is arranged on the bottom surface of the thermal imaging device, and the bottom surface of the thermal imaging device is a side of the thermal imaging device facing the sleeping bed board.

[0009] Furthermore, a buffer structure is provided on the bottom surface of the thermal imaging device.

[0010] Furthermore, the monitoring bed also includes a processing device, which is respectively connected to the thermal imaging device and the distance sensor signal, and is used to receive and parse the data transmitted by the thermal imaging device and the distance sensor. The processing device is set in any area within the signal transmission distance of the thermal imaging device and the distance sensor.

[0011] The present invention also provides a method for using a monitoring bed, comprising:

[0012] Obtaining a thermal image of the surface of a sleeping bed board, wherein the thermal image is an infrared radiation energy distribution image;

[0013] Analyze the thermal image to obtain the uncovered area of ​​the human body and the relative position of the human body on the sleeping bed board;

[0014] Determining whether the uncovered area and / or the relative position meets the condition of triggering an alarm function;

[0015] If the conditions for triggering the alarm function are met, an alarm message is generated and sent to the preset receiving terminal.

[0016] Furthermore, different levels of infrared radiation energy in the thermal image correspond to images of different colors, and the step of analyzing the thermal image to obtain the uncovered area of ​​the human body includes:

[0017] Acquire a designated color image from the thermal image, wherein the designated color image is an image having a color different from the color corresponding to the infrared radiation energy of the air;

[0018] The uncovered area of ​​the human body is obtained according to the outer contour of the designated color image.

[0019] Furthermore, the step of analyzing the thermal image to obtain the relative position of the human body on the sleeping bed board includes:

[0020] Retrieving a pre-recorded outer contour image of the surface of the sleeping bed board, wherein the outer contour image has the same shooting layout as the thermal image;

[0021] The layout position of the uncovered area of ​​the human body in the thermal image is compared with the outer contour image to obtain the relative position.

[0022] The present invention provides a monitoring bed and a method for using the same. A thermal imaging device with an off-axis lens is installed on the side of the headboard backboard facing the sleeping bed board usage surface and located in the corresponding area of ​​the center line of the bed board backboard in the vertical direction, so that the thermal imaging has a large depth of field, and can obtain all the action information of the user when sleeping on the bed, greatly improving the monitoring accuracy and completeness of the thermal imaging device. At the same time, the monitoring bed includes a processing device, which can perform corresponding alarm actions according to the information obtained by the thermal imaging device to ensure the safety of the user when sleeping on the bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an overall structural diagram of a monitoring bed according to an embodiment of the present invention;

[0024] Figure 2 It is a flowchart of a method for using a monitoring bed according to an embodiment of the present invention.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0030] This embodiment provides a monitoring bed, including a thermal imaging device 1 and a bed body, the thermal imaging device 1 includes an optical imaging objective lens, the lens of the optical imaging objective lens is an off-axis lens 11, the bed body includes a headboard 2 and a sleeping bed board 3, the thermal imaging device 1 is installed on a side of the headboard 2 facing the use surface of the sleeping bed board 3, and the off-axis lens 11 faces the use surface of the sleeping bed board 3.

[0031] In this embodiment, the monitoring bed includes a thermal imaging device 1 and a bed body. The thermal imaging device 1 includes an infrared detector, an optical imaging lens and an optical scanning system. The optical imaging lens is used to obtain the infrared thermal image of the object to be measured, and the optical scanning system is arranged between the optical imaging lens and the infrared detector, responsible for scanning the infrared thermal image of the object to be measured and focusing on the infrared detector. The infrared detector converts the infrared radiation energy into an electrical signal, and then processes, converts or displays the infrared thermal image through the monitor through a standard video signal. In this embodiment, the lens of the optical imaging lens adopts an off-axis lens 11, and the lens and the photosensitive surface have a certain angle. According to Sham's law, the depth of field of the optical imaging lens can be greatly improved. The bed body includes a sleeping bed board 3 and a bedside backboard 2, wherein the sleeping bed board 3 is a support board for the human body when sleeping, that is, the plane that the thermal imaging device 1 needs to monitor. The thermal imaging device 1 is installed in a designated area of ​​the bedside backboard 2, wherein the designated area is the side of the bedside backboard 2 facing the use surface of the sleeping bed board 3. Moreover, the off-axis lens 11 faces the use surface of the sleeping bed board 3. The thermal imaging device 1 cooperates with the off-axis lens 11, so that the depth of field obtained on the sleeping bed board 3 is greatly improved, and almost all fields of view of the entire sleeping bed board 3 are obtained, and only a very small part of the bottom of the thermal imaging device 1 is blocked as a blind area, but this blind area does not affect the monitoring effect.

[0032] Furthermore, the sleeping bed board 3 is connected to the headboard backboard 2, the eccentric angle of the eccentric lens 11 is 5-45 degrees, and the relative height between the eccentric lens 11 and the sleeping bed board 3 is 20-100 cm. There is a negative correlation between the eccentric angle and the relative height, and the eccentric lens 11 is located in the corresponding area of ​​the center line of the headboard backboard 2 in the vertical direction.

[0033] In the present embodiment, the headboard backboard 2 is fixedly connected or movably hinged to the sleeping bed board 3, and the angle between the headboard backboard 2 and the use surface of the sleeping bed board 3 can be adjusted accordingly according to the eccentric angle and relative height of the eccentric lens 11, and does not need to be fixed at 90 degrees, so that the visual field blind spot of the lens on the sleeping bed board 3 is reduced as much as possible. The eccentric angle of the eccentric lens 11 of the optical imaging objective lens is 5-45 degrees, wherein the eccentric angle refers to the angle between the central axis of the lens and the focal plane. In addition, the relative height between the eccentric lens 11 and the sleeping bed board 3 is 20-100cm, wherein the relative height refers to the height between the lowest point of the lens and the plane of the sleeping bed board 3. There is a negative correlation between the eccentric angle and the relative height, that is, the larger the eccentric angle, the smaller the relative height. The optical imaging objective lens can obtain the depth of field on the plane of the sleeping bed board 3 to the maximum extent through the mutual cooperation between the eccentric angle and the relative height, and realize the high accuracy and high integrity of the monitoring of the thermal imaging device 1. At the same time, the off-axis lens 11 is set in the corresponding area of ​​the center line of the headboard backboard 2 in the vertical direction, so the optical imaging objective lens can obtain the same bed surface area on the left and right sides of the sleeping bed board 3, that is, the field of view of the bed board 3 can be obtained to the maximum extent.

[0034] Furthermore, a fixing structure is provided on a side of the headboard backboard 2 facing the use surface of the sleeping bed board 3, and the thermal imaging device 1 is provided with a mounting structure, and the fixing structure cooperates with the mounting structure.

[0035] In this embodiment, a fixed structure is provided on one side of the headboard 2 facing the use side of the sleeping bed board 3, and the number of the fixed structures is one or more. In addition, a mounting structure is provided on the back of the thermal imaging device 1, wherein the back of the thermal imaging device 1 refers to the side of the thermal imaging device 1 facing the headboard 2. The fixed structure and the mounting structure cooperate with each other, so that the thermal imaging device 1 can be installed on the headboard 2 through the mutual fit between the fixed structure and the mounting structure. For example, the fixed structure is a card slot, and the mounting structure is a card hook, and the card slot and the card hook form a mutually matching snap-on structure to fix the thermal imaging device 1 on the headboard 2. Further, when the fixed structure is a card slot, the number of the card slots is not less than 1, and they are arranged in parallel in the vertical direction of the designated area, that is, the relative heights between each card slot and the plane of the sleeping bed board 3 are different, so that the card hook of the thermal imaging device 1 can be selected to be combined with the corresponding card slot as needed to adjust the relative height between the off-axis lens 11 and the plane of the sleeping bed board 3.

[0036] In another embodiment, the fixing structure is a through groove, and the mounting structure includes a fixing plate 12, a bolt 13, a nut 14 and a gasket 15. The fixing plate 12 is fixed to the back of the thermal imaging device 1, the bolt 13 is fixedly arranged on the fixing plate 12, and the gasket 15 is arranged between the nut 14 and the headboard backboard 2. The bolt 13 passes through the through groove and completes the installation of the thermal imaging device 1 on the headboard backboard 2 through the connection with the nut 14.

[0037] In this embodiment, the fixing structure is a through slot, which passes through the front and back sides of the headboard 2, and the length direction of the through slot is the vertical direction. The mounting structure includes a fixing plate 12, a bolt 13, a nut 14 and a gasket 15. Among them, the fixing plate 12 is fixed to the back of the thermal imaging device 1 by casting or fixing with a bolt 13, and the bolt 13 is fixedly arranged on the fixing plate 12, and the bolt 13 and the nut 14 cooperate with each other. When installing the thermal imaging device 1, the bolt 13 on the fixing plate 12 is passed through the through slot, and then the gasket 15 and the nut 14 are inserted into the bolt 13 in sequence, so that the gasket 15 is located between the nut 14 and the headboard 2. The user tightens the nut 14 so that the thermal imaging device 1 is installed through the connection between the nut 14 and the bolt 13. Preferably, the number of through slots is two, and the two through slots are parallel to each other in the vertical direction. The number of bolts 13 of the thermal imaging device 1 corresponds to the number of through slots, and the spacing between the two bolts 13 is the same as the spacing between the two through slots, so as to cooperate with each other. Since the fixing structure of the headboard backboard 2 is a through groove, the tightness between the nut 14 and the bolt 13 of the thermal imaging device 1 can freely adjust the relative height between the off-axis lens 11 and the plane of the sleeping bed board 3 .

[0038] Furthermore, the monitoring bed also includes a distance sensor 4, and the distance sensor 4 is arranged on the bottom surface of the thermal imaging device 1, and the bottom surface of the thermal imaging device 1 is a side of the thermal imaging device 1 facing the sleeping bed board 3.

[0039] In this embodiment, the detection bed is also provided with a distance sensor 4, which is arranged on the bottom surface of the thermal imaging device 1. The bottom surface of the thermal imaging device 1 refers to the side of the thermal imaging device 1 facing the sleeping bed board 3, and the distance sensor 4 is used to obtain the relative distance between the user's limbs and the thermal imaging device 1. The distance sensor 4 will transmit the acquired relative distance to the processing device of the detection bed in real time. The processing device compares the current relative distance with the preset relative distance, and when the current relative distance is not greater than the preset relative distance, it will promptly issue an alarm, thereby preventing the user from hitting the thermal imaging device 1 when getting up from the sleeping bed board 3, causing damage to the thermal imaging device 1 and the human body.

[0040] In another embodiment, a buffer structure 5 is disposed on the bottom surface of the thermal imaging device 1 .

[0041] In this embodiment, a buffer structure 5 is provided on the bottom surface of the thermal imaging device 1, and the buffer structure 5 is used to buffer the impact force generated when an object contacts the bottom surface of the thermal imaging device 1, thereby protecting the thermal imaging device 1 and the object. Preferably, the buffer structure 5 is a latex pad, which is laid flat on the bottom surface of the thermal imaging device 1. The latex pad is soft enough to effectively buffer the impact force generated between the two when the user gets up from the sleeping bed board 3 and accidentally hits the bottom surface of the thermal imaging device 1, thereby protecting the user's body and the thermal imaging device 1 from damage.

[0042] Furthermore, the monitoring bed also includes a processing device, which is respectively connected to the thermal imaging device 1 and the distance sensor 4 by signal, and is used to receive and parse the data transmitted by the thermal imaging device 1 and the distance sensor 4. The processing device is set in any area within the signal transmission distance between the thermal imaging device 1 and the distance sensor 4.

[0043] In this embodiment, the monitoring bed also includes a processing device, which is connected to the thermal imaging device 1 and the distance sensor 4 by signal, so as to receive the data collected by the thermal imaging device 1 and the distance sensor 4, and perform corresponding analysis based on the data, and output corresponding processing instructions. The processing device is connected to the thermal imaging device 1 and the distance sensor 4 through signals, so the processing device only needs to be deployed within the distance range of signal transmission, and there is no need to make specific restrictions on the deployment location.

[0044] The monitoring bed provided in this embodiment has a thermal imaging device 1 with an off-axis lens 11 installed on the side of the bed headboard 2 facing the user's sleeping position and located in the corresponding area of ​​the center line of the bed backboard in the vertical direction, so that the thermal imaging has a large depth of field, and can obtain all the action information of the user when sleeping on the bed, greatly improving the monitoring accuracy and completeness of the thermal imaging device 1. At the same time, the monitoring bed includes a processing device, which can perform corresponding alarm actions according to the information obtained by the thermal imaging device 1 to ensure the safety of the user when sleeping on the bed.

[0045] This embodiment also provides a method for using a monitoring bed, including:

[0046] Obtaining a thermal image of the surface of the sleeping bed board 3, wherein the thermal image is an infrared radiation energy distribution image;

[0047] Analyze the thermal image to obtain the uncovered area of ​​the human body and the relative position of the human body on the sleeping bed board 3;

[0048] Determining whether the uncovered area and / or the relative position meets the condition of triggering an alarm function;

[0049] If the conditions for triggering the alarm function are met, an alarm message is generated and sent to the preset receiving terminal.

[0050] In this embodiment, the processing device obtains a thermal image of the surface of the sleeping bed board 3 through the thermal imaging device 1. The thermal image is an infrared radiation energy distribution image of the surface of the sleeping bed board 3, and presents images of different colors according to the strength of the infrared radiation energy of the object. Since the human body radiates heat, the color image representing the human body will be obviously different from the color image of the air. If the human body is covered by a quilt or other objects, the infrared radiation energy image of the surface of the covering will be consistent with the color image corresponding to the air. Therefore, the processing device only needs to filter out images with different colors corresponding to the infrared radiation energy of the air from the thermal image, that is, images representing the human body exposed to the outside. For example, if the color image of the air is blue, the processing device only needs to filter out color images other than the blue image to obtain the color image corresponding to the human body exposed to the outside. The processing device obtains the uncovered area of ​​the human body according to the outer contour of the color image corresponding to the human body exposed to the outside. Then, the processing device retrieves the outer contour image of the surface of the sleeping bed board 3 recorded in advance, wherein the outer contour image has the same shooting layout as the thermal image, so that the same layout standard is used in the subsequent position comparison. The processing device compares the layout position of the uncovered area of ​​the current human body in the thermal image with the outer contour image, for example, overlaps the layout position of the uncovered area of ​​the previous human body in the thermal image with the outer contour image, thereby obtaining the relative position of the human body on the sleeping bed board 3. The processing device pre-records the conditions for triggering the alarm function, which are based on the uncovered area of ​​the human body and the relative position of the human body on the sleeping bed board 3. For example, when the uncovered area of ​​the current human body is below the preset area of ​​the human body, such as below the chest, the alarm function is triggered. Alternatively, when the relative position of the current human body on the sleeping bed board 3 and the distance from the two side edges of the sleeping bed board 3 are within a preset range, such as 5 cm, the alarm function is triggered. After the alarm function is triggered, the processing device will generate different alarm information according to different triggering conditions. For example, when the trigger condition is that the uncovered area of ​​the current human body is below the preset human body area, the generated alarm information is to remind the user to cover the quilt in time; when the trigger condition is that the relative position of the current human body on the sleeping bed board 3 and the distance between the two side edges of the sleeping bed board 3 are within the preset range, the alarm information is to remind the user to take timely protection to prevent falling, accompanied by a rapid alarm sound. The processing device sends the generated alarm information to the preset receiving terminal, which can be sent via a wireless signal, and the preset receiving terminal can be a mobile terminal such as a user's mobile phone.

[0051] Furthermore, different levels of infrared radiation energy in the thermal image correspond to images of different colors, and the step of analyzing the thermal image to obtain the uncovered area of ​​the human body includes:

[0052] Acquire a designated color image from the thermal image, wherein the designated color image is an image having a color different from the color corresponding to the infrared radiation energy of the air;

[0053] The uncovered area of ​​the human body is obtained according to the outer contour of the designated color image.

[0054] In this embodiment, different levels of infrared radiation energy in the thermal image correspond to images of different colors, and the intensity of infrared radiation energy emitted by different parts of the human body will also be different, but the infrared radiation energy of the air in the same space does not change much and is basically consistent. Therefore, in order to filter out the color image corresponding to the area covered by the human body, the processing device only needs to remove the color image corresponding to the infrared radiation energy of the air to obtain the image of the uncovered area of ​​the human body, that is, the designated color image, because the level of infrared radiation energy that can be detected on the surface of the human body covered by the covering is consistent with that of the air and will not be affected by the heat emitted by the human body. The processing device obtains the image of the uncovered area of ​​the current human body by drawing the outer contour of the designated color image.

[0055] Furthermore, the step of analyzing the thermal image to obtain the relative position of the human body on the sleeping bed board 3 includes:

[0056] Retrieving a pre-recorded outer contour image of the surface of the sleeping bed board 3, wherein the outer contour image has the same shooting layout as the thermal image;

[0057] The layout position of the uncovered area of ​​the human body in the thermal image is compared with the outer contour image to obtain the relative position.

[0058] In this embodiment, the processing device has pre-recorded an outer contour image of the sleeping bed board 3. The outer contour image has the same shooting layout as the thermal image, that is, it is obtained by shooting with the same shooting parameters such as viewing angle and aperture, so as to have the same layout standard in the subsequent position comparison. The processing device compares the layout position of the current uncovered area of ​​the human body in the thermal image with the outer contour image of the sleeping bed board 3, and obtains the relative position of the human body on the sleeping bed board 3 in reality according to the layout position of the uncovered area of ​​the human body in the outer contour image.

[0059] The present embodiment provides a method for using a monitoring bed, which obtains a thermal image of the surface of a sleeping bed board 3 through a thermal imaging device 1 equipped with an off-axis lens 11, and then obtains an infrared radiation energy image representing a human body based on infrared radiation energy distribution images of different colors in the thermal image, thereby determining the uncovered area of ​​the human body and the relative position on the sleeping bed board 3, and judging whether it is necessary to trigger an alarm function based on the uncovered area of ​​the human body and / or the relative position on the sleeping bed board 3, thereby achieving safe monitoring of the user while sleeping with high accuracy and completeness.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A monitoring bed, characterized in that: It comprises a thermal imaging device and a bed, wherein the thermal imaging device comprises an optical imaging objective lens, the lens of the optical imaging objective lens is an off-axis lens, the bed comprises a headboard and a sleeping bed board, the sleeping bed board is connected to the headboard, the off-axis lens is located in a corresponding area of ​​the center line of the headboard in the vertical direction, the thermal imaging device is installed on a side of the headboard facing the use surface of the sleeping bed board, and the off-axis lens faces the use surface of the sleeping bed board; the off-axis angle of the off-axis lens is 5-45 degrees, the relative height between the off-axis lens and the sleeping bed board is 20-100 cm, and there is a negative correlation between the off-axis angle and the relative height; Wherein, the monitoring bed further comprises a distance sensor, and the distance sensor is arranged on the bottom surface of the thermal imaging device, and the bottom surface of the thermal imaging device is a side of the thermal imaging device facing the sleeping bed board; The monitoring bed further comprises a processing device, which is respectively connected to the thermal imaging device and the distance sensor signal, and is used to receive and analyze the data transmitted by the thermal imaging device and the distance sensor, and the processing device is arranged in any area within the signal transmission distance of the thermal imaging device and the distance sensor; Among them, a fixed structure is provided on the side of the headboard facing the use surface of the sleeping bed board, and the thermal imaging device is provided with a mounting structure, and the fixed structure and the mounting structure cooperate with each other.

2. The monitoring bed according to claim 1, characterized in that: The fixing structure is a through slot, and the mounting structure includes a fixing plate, a bolt, a nut and a gasket. The fixing plate is fixed to the back of the thermal imaging device, the bolt is fixedly arranged on the fixing plate, the gasket is arranged between the nut and the headboard, and the bolt passes through the through slot and completes the installation of the thermal imaging device on the headboard through the connection with the nut.

3. The monitoring bed according to claim 2, characterized in that: The bottom surface of the thermal imaging device is provided with a buffer structure.

4. A method for using a monitoring bed, characterized in that: The monitoring bed according to any one of claims 1 to 3, comprising: Obtaining a thermal image of the surface of a sleeping bed board, wherein the thermal image is an infrared radiation energy distribution image; Analyze the thermal image to obtain the uncovered area of ​​the human body and the relative position of the human body on the sleeping bed board; Determining whether the uncovered area and / or the relative position meets the condition of triggering an alarm function; If the conditions for triggering the alarm function are met, an alarm message is generated and sent to the preset receiving terminal.

5. The method for using the monitoring bed according to claim 4, characterized in that: Different levels of infrared radiation energy in the thermal image correspond to images of different colors, and the step of analyzing the thermal image to obtain the uncovered area of ​​the human body includes: Acquire a designated color image from the thermal image, wherein the designated color image is an image having a color different from the color corresponding to the infrared radiation energy of the air; The uncovered area of ​​the human body is obtained according to the outer contour of the designated color image.

6. The method for using the monitoring bed according to claim 5, characterized in that: The step of analyzing the thermal image to obtain the relative position of the human body on the sleeping bed board includes: Retrieving a pre-recorded outer contour image of the surface of the sleeping bed board, wherein the outer contour image has the same shooting layout as the thermal image; The layout position of the uncovered area of ​​the human body in the thermal image is compared with the outer contour image to obtain the relative position.

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