Bedside lifting prompter and measuring method thereof

Abstract

The invention relates to the technical field of bedside angle detection, and discloses a bedside lifting prompter and a measuring method thereof.The bedside lifting prompter comprises an elastic rope, two bases and two included angle measuring devices, the two bases are used for being connected to a bedside board and a bed bottom board respectively, the elastic rope is arranged between the two bases in a tightened state, and the two included angle measuring devices are arranged on the elastic rope; the two included angle measuring devices are correspondingly arranged on the two bases and used for measuring the included angle between the elastic rope and the bed head plate and the included angle between the elastic rope and the bed bottom plate respectively. The bases are respectively arranged on the headboard and the bed bottom board, and the elastic rope in a tightened state is connected between the two bases, so that the included angle between the elastic rope and the headboard and the included angle between the elastic rope and the bed bottom board are respectively measured through the two included angle measurers during use; the included angle between the headboard and the bed bottom plate can be obtained according to the interior angle of the triangle and the theorem, and the measurement result is accurate and is not influenced by external conditions such as inertia and the levelness of the bed bottom plate.

Description

Technical Field

[0001] This application relates to the field of headboard angle detection technology, and in particular to a headboard elevation indicator and its measurement method. Background Technology

[0002] Elevating the head of the bed is of great importance in medical care, and the precise adjustment of its angle directly affects the patient's recovery and treatment outcomes. Many patients need to rest in bed due to their condition, and the head of the bed needs to be elevated at different angles. For example, elevating the head of the bed by 30 to 45 degrees can reduce aspiration and prevent lung infections. In the early days of clinical practice, visual estimation was often used to adjust the angle based on experience and reference points. This method has low accuracy and a large margin of error.

[0003] To improve measurement accuracy, bed head angle detectors have been developed. Common detectors consist of an indicator card and a pointer affected by gravity. Although they are simple in structure and inexpensive, they have significant drawbacks: when adjusting the bed head angle, the pointer is easily affected by the inertia of the adjustment and swings, requiring waiting for it to stabilize before a reading can be taken, thus affecting the accuracy and reliability of angle measurement, as well as measurement efficiency. Alternatively, level-type detectors can be used to detect the horizontal tilt angle of the bed head, but the accuracy is affected when the bed floor is not level. Clinically, it is difficult to ensure that the numerous bed floorboards are perfectly level, thus making it difficult to guarantee measurement accuracy.

[0004] Therefore, there is a need for a headboard lift indicator that can overcome the limitations of existing technologies, such as being unaffected by inertia or the angle of the bed base, and that can measure the angle between the headboard and the bed base, in order to better meet the precise needs for headboard angle adjustment in medical care. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention sets bases on the headboard and bed base respectively, and connects a taut elastic rope between the two bases. During use, two angle measuring devices are used to measure the angle between the elastic rope and the headboard and the elastic rope and the bed base respectively. The angle between the headboard and the bed base can be calculated according to the triangle angle sum theorem. The measurement results are accurate and are not affected by external conditions such as inertia and the levelness of the bed base.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a headboard elevation indicator, comprising: two bases, the two bases being respectively connected to the headboard and the bed base;

[0007] An elastic rope, which is taut and positioned between the two bases;

[0008] Two angle measuring devices are respectively set on the two bases. The two angle measuring devices are used to measure the angle between the elastic rope and the headboard and the angle between the elastic rope and the bed base.

[0009] Furthermore, the included angle measuring device includes: an indicator part, which is disposed on the base and is parallel to the headboard or the bed base;

[0010] A first rotating part is rotatably mounted on the base, and the axis of rotation of the first rotating part is parallel to the axis of rotation of the headboard. One end of the elastic rope is connected to the first rotating part.

[0011] An angle indicator and / or angle sensor are disposed on the base, and the angle indicator and / or angle sensor are used to measure the angle between the indicator and the elastic rope.

[0012] Furthermore, the included angle measuring device also includes: a second rotating part, which is fixedly disposed on the first rotating part, and the rotation axis of the second rotating part is perpendicular to the rotation axis of the first rotating part, and the elastic rope is connected to the first rotating part through the second rotating part.

[0013] Furthermore, the headboard elevation indicator also includes two fasteners, with the two bases respectively mounted on the two fasteners, and the two fasteners are used to clamp and fix the headboard and the bed base respectively;

[0014] A slide rail is provided on one of the fixtures and is parallel to the headboard or bed base. The corresponding base is slidably mounted on the fixture via the slide rail.

[0015] A vertical marking section is disposed on the base located on the slide rail, and the vertical marking section coincides with the elastic rope when the elastic rope is perpendicular to the slide rail.

[0016] Furthermore, the included angle measuring device includes: an angle sensor;

[0017] The included angle measuring device further includes an angle calculation module, wherein the two angle sensors are respectively connected to the angle calculation module in communication, and the angle calculation module is used to calculate the included angle between the headboard and the bed base.

[0018] Furthermore, the headboard elevation indicator also includes a prompter, which is mounted on the base and electrically connected to the angle calculation module. The prompter is used to issue corresponding audio-visual prompts when the angle between the headboard and the bed base is greater than, less than, or equal to a preset number.

[0019] Furthermore, the indicator unit includes a laser, which is disposed on the base and is used to emit a laser beam parallel to the headboard or the bed base.

[0020] The laser is collinear with the starting point of the angle marking section;

[0021] Alternatively, the laser may be collinear with the initial position of the angle sensor.

[0022] Furthermore, the headboard raise indicator also includes a winder disposed on the base, the winder being used to wind or release the elastic cord.

[0023] Furthermore, the headboard elevation indicator also includes a level sensor, which is disposed on the base for connection to the bed base.

[0024] Furthermore, several magnetic suction parts are respectively embedded in the surfaces of the two bases facing the headboard or the bed base.

[0025] A method for measuring a headboard elevation indicator as described above includes the following steps: connecting two bases to the headboard and the bed base respectively, and keeping the elastic cord taut;

[0026] The angle α between the elastic rope and the headboard and the angle b between the elastic rope and the bed base are obtained by using the two angle measuring devices.

[0027] The angle c between the headboard and the bed baseboard is 180° - a - b.

[0028] Furthermore, it also includes the following steps: changing the fixed position of one of the bases so that the elastic rope is perpendicular to the headboard or the bed base;

[0029] The angle between the headboard and the baseboard is c = 90° - a or c = 90° - b.

[0030] Beneficial effects: This invention sets bases on the headboard and bed base respectively, and connects a taut elastic rope between the two bases. In use, two angle measuring devices are used to measure the angle between the elastic rope and the headboard and the elastic rope and the bed base respectively. The angle between the headboard and the bed base can be calculated according to the triangle angle sum theorem. The measurement results are accurate and are not affected by external conditions such as inertia and the levelness of the bed base. Attached Figure Description

[0031] Figure 1 A schematic diagram of the structure of the headboard elevation indicator (in use) provided by the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of a headboard elevation indicator according to one embodiment;

[0033] Figure 3 This is a schematic diagram of the structure of a headboard elevation indicator according to another embodiment;

[0034] Figure 4 This is a schematic diagram of the structure of a bed head elevation indicator according to another embodiment;

[0035] Figure 5 This is a structural schematic diagram of a bedside head elevation indicator (in use) according to another embodiment;

[0036] Figure 6 This is a schematic diagram of the structure of a headboard elevation indicator (another usage state) according to another embodiment.

[0037] The labels in the attached diagram are as follows: 110, headboard; 120, bed base; 200, base; 300, elastic rope; 400, angle measuring device; 410, indicator; 411, laser; 420, first rotating part; 430, second rotating part; 440, angle marking part; 450, angle sensor; 460, vertical marking part; 500, indicator; 600, winder; 710, fastener; 720, slide rail. Detailed Implementation

[0038] This invention provides a headboard elevation indicator and its measurement method. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0039] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0040] It should also be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] The invention will be further explained below with reference to the accompanying drawings and the description of the embodiments.

[0043] This embodiment provides a bed head elevation indicator 500 and its measurement method, such as... Figures 1 to 6 As shown, to solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A headboard elevation indicator 500 is used to install on a bed where the headboard 110 can rotate relative to the bed base 120 and to measure the angle between the bed base 120 and the bed base 120. The headboard elevation indicator 500 includes: an elastic rope 300, two bases 200, and two angle measuring devices 400. The two bases 200 are respectively connected to the headboard 110 and the bed base 120; the elastic rope 300 is taut and positioned between the two bases 200; the two angle measuring devices 400 are correspondingly positioned on the two bases 200, and are used to measure the angle between the elastic rope 300 and the headboard 110, and the angle between the elastic rope 300 and the bed base 120, respectively.

[0044] Specifically, the two bases 200 can be detachably connected to the headboard 110 and the bed base 120, respectively. In actual use, this can be divided into two scenarios: a first scenario of adjusting the angle of the headboard 110 and a second scenario of checking whether the angle of the headboard 110 meets the requirements. In the first scenario, medical staff can first install the two bases 200 on the headboard 110 and the bed base 120 respectively (preferably on the sides of the headboard 110 and the bed base 120, such as...). Figure 1As shown, this setup allows for better movement with the headboard 110. A taut elastic rope 300 is then connected between the two bases 200 (the elastic rope 300 can be considered a straight line when taut, facilitating the angle measurement device 400 to measure the angle between it and the headboard 110 or the bed base 120). The angle of the headboard 110 can then be adjusted while simultaneously measuring the angle using the two angle measurement devices 400 until the required angle is achieved. Then, it is considered whether the headboard height indicator 500 needs to be moved from... In the second scenario, medical staff can pre-separate the two bases 200 based on the distance between the headboard 110 and the bed base 120, so that the elastic rope 300 is in a taut state. Then, the two bases 200 are installed on the headboard 110 and the bed base 120 respectively. The angle of the headboard 110 can be obtained through the two angle measuring devices 400. If the angle of the headboard 110 does not meet the requirements, the angle of the headboard 110 can be adjusted to the required angle. Finally, it is necessary to consider whether the headboard elevation indicator 500 needs to be removed from the bed.

[0045] It should be noted that, in use, this invention uses two angle measuring devices 400 to measure the angle between the elastic rope 300 and the headboard 110, and the angle between the elastic rope 300 and the bed base 120, respectively. The angle between the headboard 110 and the bed base 120 can be calculated according to the triangle angle sum theorem. The measurement results are accurate and are not affected by external conditions such as inertia and the levelness of the bed base, effectively solving the shortcomings of existing headboard angle measuring devices that are easily affected by external factors such as inertia and the levelness of the bed base 120.

[0046] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, the included angle measuring device 400 includes: an indicator 410, which is disposed on the base 200 and is arranged parallel to the headboard 110 or the bed base 120;

[0047] The first rotating part 420 is rotatably mounted on the base 200, and the axis of rotation of the first rotating part 420 is parallel to the axis of rotation of the headboard 110. One end of the elastic rope 300 is connected to the first rotating part 420.

[0048] An angle marking section 440 and / or an angle sensor 450 are disposed on the base 200. The angle marking section 440 and / or the angle sensor 450 are used to measure the angle between the indicator section 410 and the elastic rope 300.

[0049] It should be noted that when the indicator part 410 and the headboard 110 or the bed base 120 are parallel, it means that the length extension direction of the indicator part and other components is parallel to the support surface of the headboard or the bed base.

[0050] Specifically, the first rotating part 420 is a disc, and the elastic rope 300 is arranged radially along the disc. When the angle between the indicator part 410 and the elastic rope 300 is a certain value, the elastic rope 300 and the indicator part 410 coincide.

[0051] In actual use, the indicator 410 is used to indicate the angle of the headboard 110 or the bed base 120. Specifically, when installing the base 200, this straight line needs to be set along the plane or edge of the headboard 110 or the bed base 120. When the angle measuring device includes an angle marking section 440, such as... Figure 2 As shown, the starting points of the indicator 410 and the angle marking section 440 are collinear, making it easy to read the angle between the indicator 410 (headboard 110 or bed base 120) and the elastic rope 300; when the angle measuring device includes an angle sensor 450, such as Figure 3 As shown, the initial position of the indicator 410 is collinear with that of the angle sensor 450, so the angle between the indicator 410 (headboard 110 or bed base 120) and the elastic rope 300 can be easily read.

[0052] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, the included angle measuring device 400 further includes: a second rotating part 430, which is fixedly disposed on the first rotating part 420, and the rotation axis of the second rotating part 430 is perpendicular to the rotation axis of the first rotating part 420. The elastic rope 300 is connected to the first rotating part 420 through the second rotating part 430.

[0053] Specifically, through the combined action of the first rotating part 420 and the second rotating part 430, the elastic rope 300 can be hinged to the base 200. In actual use, when the two bases 200 are fixed to the headboard 110 and the bed base 120 respectively, the headboard 110 rotates around the bed base 120. At this time, the two ends of the elastic rope 300 can drive the two first rotating parts 420 to rotate respectively. However, in existing beds, the sides of the headboard 110 and the bed base 120 may not be on the same horizontal plane. In this case, in order to measure the included angle between the headboard 110 and the bed base 120, a second rotating part 430 is provided. When the two bases 200 are fixed to the headboard 110 and the bed base 120 respectively, since the sides may not be on the same horizontal plane, the two ends of the elastic rope 300 will drive the two second rotating parts 430 to rotate respectively, but will not drive the first rotating part 420 to rotate. Therefore, it will not affect the measurement results and improves the applicability of the present invention.

[0054] In one embodiment, such as Figures 4 to 6 As shown, the headboard elevation indicator 500 also includes: two fasteners 710, two bases 200 respectively disposed on the two fasteners 710, and the two fasteners 710 are used to clamp and fix to the headboard 110 and the bed base 120 respectively;

[0055] The slide rail 720 is mounted on one of the fixtures 710 and is parallel to the headboard 110 or the bed base 120. The corresponding base 200 is slidably mounted on the fixture 710 via the slide rail 720.

[0056] The vertical marking part 460 is mounted on the base 200 located on the slide rail 720. When the elastic rope 300 is perpendicular to the slide rail 720, the vertical marking part 460 coincides with the elastic rope 300.

[0057] Better, such as Figure 5 and Figure 6 As shown, the base 200 connected to the slide rail 720 is fixed to the bed base 120 by the fastener 710. The base 200 can move along the slide rail 720 (parallel to the bed base 120). When the angle between the elastic rope 300 and the slide rail 720 is 90 degrees, i.e., b = 90°, according to the triangle angle sum theorem, the angle c between the headboard 110 and the bed base 120 is c = 180° - 90° - a = 90° - a. In actual use, the two fasteners 710 are clamped and fixed to the headboard 110 and the bed base 120 respectively. When the angle between the headboard 110 and the bed base 120 is increased, the distance between the two bases 200 increases, and the elastic rope 300 is in a taut state, such as... Figures 5 to 6 As shown, since the elastic rope 300 is at its minimum length when perpendicular to the slide rail 720, it drives the base 200 located on the slide rail 720 to move, causing the angle between the elastic rope 300 and the slide rail 720 to approach 90 degrees. To improve measurement accuracy, the base 200 can be moved so that the vertical marking portion 460 coincides with the elastic rope 300, thereby ensuring that the elastic rope 300 is perpendicular to the slide rail 720.

[0058] In one embodiment, the angle marking portion 440 fixed to the headboard 110 is also used to measure the angle between the headboard 110 and the bed base 120. Since the angle between the elastic rope 300 and the slide rail 720 is 90 degrees, the angle c between the headboard 110 and the bed base 120 is 90° - α. Since the angle marking portion 440 can measure the angle α between the indicator portion 410 and the elastic rope 300, α and the corresponding c can be directly marked on the angle marking portion 440, so that the angle c between the headboard 110 and the bed base 120 can be obtained directly without calculation.

[0059] Specifically, the fastener 710 includes a U-shaped clamp and several fastening screws. One end of each fastening screw passes through the clamp and is threadedly connected to it. The clamp is used to snap onto the headboard 110 or bed base 120, and then secured to the headboard 110 or bed base 120 by the fastening screws. One side of the fastener is in close contact with the headboard 110 or bed base 120, thereby making the indicator 410 parallel to the headboard 110 or bed base 120, achieving quick positioning. The fastening screws are spaced apart. In actual use, if the surface of the headboard 110 or bed base 120 is uneven where it is fixed by the fastener 710, the angle between the indicator 410 and that uneven surface can be changed by adjusting the tightness of the fastening screws, thus making the indicator 410 parallel to the headboard 110 or bed base 120.

[0060] In one embodiment, such as Figure 3 As shown, the included angle measuring device 400 includes: an angle sensor 450;

[0061] The included angle measuring device 400 also includes an angle calculation module, with two angle sensors 450 respectively connected to the angle calculation module for calculating the included angle between the headboard 110 and the bed base 120.

[0062] Specifically, the angle calculation module can be mounted on one of the bases 200 and electrically connected to the angle sensor 450 on that base 200, while the angle sensor 450 on the other base 200 can be wirelessly connected to the angle calculation module. In actual use, the angle calculation module can use the two angle sensors 450 to detect in real time the angle between the elastic rope 300 and the headboard 110, and the angle between the elastic rope 300 and the bed base 120, such as... Figure 1 As shown, the angle between the elastic rope 300 and the headboard 110 is a, and the angle between the elastic rope 300 and the bed base 120 is b. The angle calculation module can calculate the angle c = 180° - a - b between the headboard 110 and the bed base 120 in real time according to the triangle angle sum theorem, which effectively reduces the difficulty of use.

[0063] In another embodiment, only the base 200, which is equipped with the angle calculation module, is equipped with an angle sensor 450. The base 200 is mounted on the bed base 120 via a slide rail 720 and a fastener 710. When the angle between the elastic rope 300 and the slide rail 720 is 90 degrees, the angle c between the headboard 110 and the bed base 120 is 90° - α. The angle sensor 450 can measure the angle α between the indicator 410 and the elastic rope 300. Therefore, the angle calculation module can directly calculate the corresponding c, thereby obtaining the angle c between the headboard 110 and the bed base 120 at a lower cost.

[0064] In one embodiment, such as Figure 3 As shown, the headboard elevation indicator 500 also includes an indicator 500, which is mounted on the base 200 and electrically connected to the angle calculation module. The indicator 500 is used to issue corresponding audio-visual prompts when the angle between the headboard 110 and the bed base 120 is greater than, less than, or equal to a preset number.

[0065] Specifically, the indicator 500 can be a display, preferably an LED display screen, to display the angle between the headboard 110 and the bed base 120 in real time. It also includes a control panel where a preset angle can be input. When the angle between the headboard 110 and the bed base 120 is greater than, less than, or equal to the preset value, it will issue audible and visual prompts such as "Please adjust the angle smaller," "Please adjust the angle larger," and "Please stop adjusting the angle," respectively. Simultaneously, it can also provide visual prompts, such as illuminating a red light, a yellow light, and a green light when the angle between the headboard 110 and the bed base 120 is greater than, less than, or equal to the preset value, respectively. When the red light is on, it is preferable to simultaneously issue a voice or buzzer prompt.

[0066] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, the indicator unit 410 includes a laser 411, which is mounted on the base 200 and is used to emit a laser parallel to the headboard 110 or the bed base 120.

[0067] In this case, the starting point of the laser 411 is collinear with the starting point of the angle marking section 440;

[0068] Alternatively, the laser 411 may be collinear with the initial position of the angle sensor 450.

[0069] Preferably, the laser emitted by the laser 411 is flush with the surface of the base plate facing the bed, so that during actual use, the laser shines along the side of the headboard 110 or the bed base plate 120, thereby improving the accuracy of the measurement results.

[0070] In one embodiment, such as Figure 2 , Figure 3 As shown, the headboard raise indicator 500 also includes a winder 600, which is disposed on the base 200 and is used to wind or release the elastic cord 300.

[0071] Specifically, the winder 600 can adopt the structure of a measuring tape, allowing medical staff to wind, release, and lock the elastic rope 300 according to the actual situation.

[0072] In one embodiment, the headboard elevation indicator 500 further includes a level sensor disposed on a base 200 for attachment to the bed base 120.

[0073] Specifically, the above structure can help adjust the level of the bed base 120, and it can replace the function of a laser level by cooperating with the laser 411.

[0074] In one embodiment, the headboard raise indicator 500 further includes a plurality of magnetic parts, which are respectively embedded in the surfaces of the two bases 200 facing the headboard 110 or the bed base 120.

[0075] Specifically, the edges of the headboard 110 or bed base 120 of the hospital bed are generally square tubes that can be attracted by magnets. With the above-mentioned settings, the base 200 can be easily attached to the headboard 110 or bed base 120 for fixation.

[0076] A method for measuring any of the above-mentioned headboard elevation indicator 500 includes the following steps: connecting two bases 200 to the headboard 110 and the bed base 120 respectively, and keeping the elastic rope 300 taut.

[0077] The included angle α between the elastic rope 300 and the headboard 110 and the included angle b between the elastic rope 300 and the bed base 120 are obtained by two included angle measuring devices 400, respectively.

[0078] The angle c between the two bed base plates 120 is 180° - a - b.

[0079] In one embodiment, the method further includes the step of changing the fixed position of one of the bases 200 so that the elastic rope 300 is perpendicular to the headboard 110 or the bed base 120.

[0080] The angle between the headboard 110 and the bed base 120 is c = 90° - a or c = 90° - b.

[0081] In summary, this application relates to the field of headboard angle detection technology, and discloses a headboard elevation indicator and its measurement method. It includes an elastic rope, two bases, and two angle measuring devices. The two bases are respectively connected to the headboard and the bed base. The elastic rope is taut and positioned between the two bases. The two angle measuring devices are correspondingly positioned on the two bases and are used to measure the angle between the elastic rope and the headboard, and the angle between the elastic rope and the bed base. This invention, by setting bases on the headboard and the bed base and connecting a taut elastic rope between the two bases, allows for the measurement of the angles between the elastic rope and the headboard, and between the elastic rope and the bed base using the two angle measuring devices. The angle between the headboard and the bed base can be calculated using the triangle angle sum theorem. The measurement results are accurate and unaffected by external conditions such as inertia or the levelness of the bed base.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A headboard elevation indicator, used for installation on a bed where the headboard can rotate relative to the bed base and for measuring the angle between the headboard and the bed base, characterized in that, The headboard elevation indicator includes two bases, which are respectively connected to the headboard and the bed base; An elastic rope, which is taut and positioned between the two bases; Two angle measuring devices are respectively set on the two bases. The two angle measuring devices are used to measure the angle between the elastic rope and the headboard and the angle between the elastic rope and the bed base.

2. The headboard elevation indicator according to claim 1, characterized in that, The included angle measuring device includes: an indicator part, which is disposed on the base and is arranged parallel to the headboard or the bottom board of the bed; A first rotating part is rotatably mounted on the base, and the axis of rotation of the first rotating part is parallel to the axis of rotation of the headboard. One end of the elastic rope is connected to the first rotating part. An angle indicator and / or angle sensor are disposed on the base, and the angle indicator and / or angle sensor are used to measure the angle between the indicator and the elastic rope.

3. The headboard elevation indicator according to claim 2, characterized in that, The included angle measuring device further includes: a second rotating part, which is fixedly mounted on the first rotating part, and the axis of rotation of the second rotating part is perpendicular to the axis of rotation of the first rotating part; the elastic rope is connected to the first rotating part through the second rotating part.

4. The headboard elevation indicator according to claim 2, characterized in that, The headboard elevation indicator also includes two fasteners, with the two bases respectively mounted on the two fasteners, and the two fasteners are used to clamp and fix them to the headboard and the bed base respectively; A slide rail is provided on one of the fixtures and is parallel to the headboard or bed base. The corresponding base is slidably mounted on the fixture via the slide rail. A vertical marking section is disposed on the base located on the slide rail, and the vertical marking section coincides with the elastic rope when the elastic rope is perpendicular to the slide rail.

5. The headboard elevation indicator according to claim 2, characterized in that, The included angle measuring device includes: an angle sensor; The included angle measuring device further includes an angle calculation module, wherein the two angle sensors are respectively connected to the angle calculation module in communication, and the angle calculation module is used to calculate the included angle between the headboard and the bed base.

6. The headboard elevation indicator according to claim 5, characterized in that, The headboard elevation indicator also includes a prompter, which is mounted on the base and electrically connected to the angle calculation module. The prompter is used to issue corresponding audio-visual prompts when the angle between the headboard and the bed base is greater than, less than, or equal to a preset number.

7. The headboard elevation indicator according to claim 2, characterized in that, The indicator unit includes: a laser, which is disposed on the base and is used to emit a laser parallel to the headboard or the floorboard; The laser is collinear with the starting point of the angle marking section; Alternatively, the laser may be collinear with the initial position of the angle sensor.

8. The headboard elevation indicator according to claim 1, characterized in that, The headboard elevation indicator also includes a winder disposed on the base, the winder being used to wind or release the elastic cord.

9. A method for measuring a headboard elevation indicator as described in any one of claims 1-8, characterized in that, The steps include: connecting the two bases to the headboard and the bed base respectively, and keeping the elastic cord taut; The angle α between the elastic rope and the headboard and the angle b between the elastic rope and the bed base are obtained by using the two angle measuring devices. The angle c between the headboard and the bed baseboard is 180° - a - b.

10. A method for measuring the headboard elevation indicator as described in claim 9, characterized in that, It also includes the following steps: changing the fixed position of one of the bases so that the elastic rope is perpendicular to the headboard or the baseboard; The angle between the headboard and the baseboard is c = 90° - a or c = 90° - b.

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