A method and system for detecting the angle of inclination of an electric bed

Abstract

The application provides a reclining angle detection method and system of an electric bed, and relates to the technical field of electric bed testing, and comprises the following steps: S1, controlling the electric bed to be tested to adjust to any preset memory position; S2, obtaining an angle value collected by a six-axis sensor at the current memory position and extracting a corresponding calibration coefficient according to the working state of a vibrator; S3, obtaining a calibrated angle value according to the calibration coefficient and the angle value, and judging whether the difference between the calibrated angle value and a calibration angle corresponding to the memory position is within an error range; if yes, outputting a reclining angle detection result indicating that the calibration angle test of the corresponding memory position is up to standard; if no, recording a retest number, returning to step S2 when the retest number does not exceed a preset threshold, and outputting a reclining angle detection result indicating that the calibration angle test of the corresponding memory position is not up to standard when the retest number exceeds the preset threshold. The beneficial effect is to improve the accuracy of the electric bed adjustment angle test.

Description

Technical Field

[0001] This invention relates to the field of electric bed testing technology, and in particular to a method and system for detecting the tilt angle of an electric bed. Background Technology

[0002] An electric bed is a piece of furniture that uses electricity to adjust its angle. Its emergence has greatly facilitated people's lives, providing users with a more comfortable environment for rest or sleep. Through precise angle adjustment, electric beds can adapt to different people and needs, providing optimal support and comfort whether reading, watching TV, or sleeping.

[0003] However, the development of electric bed machines also faces some challenges. On the one hand, existing methods for adjusting the angle of electric bed machines often rely on manual measurement, which is not only cumbersome to operate, but also makes it difficult to guarantee the accuracy of the measurement.

[0004] Existing electric beds have massage functions, making them applicable not only in homes but also in medical and other fields. However, the vibration of the vibrator installed on the electric bed during massage can cause the six-axis sensor installed on the electric bed during the factory testing process to be unable to accurately measure the real-time angle of the electric bed. This makes it impossible to accurately determine whether the electric bed achieves precise angle adjustment when switching between preset modes.

[0005] Therefore, there is an urgent need to design a method for detecting the tilt angle of an electric lathe, and to calibrate the angle of the six-axis sensor while the vibrator is running during the test. This would simplify the testing process and improve the accuracy of the electric lathe angle detection. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a method for detecting the tilt angle of an electric bed. The electric bed under test has a built-in vibrator and a six-axis sensor, and is pre-configured with a correspondence between the working state of the vibrator and the corresponding calibration coefficients. The tilt angle detection method includes:

[0007] Step S1: Control the electric bed under test to adjust to any preset memory position;

[0008] Step S2: Obtain the angle value collected by the six-axis sensor at the current memory position and extract the corresponding calibration coefficient according to the working state of the vibrator.

[0009] Step S3: Process the calibration coefficient and the angle value to obtain the calibrated angle value, and determine whether the difference between the calibrated angle value and the calibration angle corresponding to the memory position is within the error range.

[0010] If so, output the tilt angle detection result indicating that the calibration angle test of the corresponding memory position has met the standard;

[0011] If not, record one retest count. If the number of retest counts does not exceed a preset threshold, return to step S2. If the number of retest counts exceeds the preset threshold, output the tilt angle detection result indicating that the calibration angle test of the corresponding memory position is not up to standard.

[0012] Preferably, the operating state includes a vibration state and a non-vibration state, then the calibration coefficient includes a vibration calibration coefficient and a pre-configured non-vibration calibration coefficient. Therefore, before performing step S1, the process of obtaining the vibration calibration coefficient is also included.

[0013] Step A1: Place the angle sensor on the bed frame of the standard electric bed;

[0014] Step A2: Turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to multiple preset memory positions. Record the sensor angles collected by the angle sensors corresponding to each memory position. Then, process the preset calibration angles corresponding to each memory position and the sensor angles to obtain the vibration calibration coefficients and store them.

[0015] Preferably, step A2 includes:

[0016] Step A21: Construct the calibration relationship function between the calibration angle and the corresponding sensor angle;

[0017] Step A22: Turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to each of the memory positions in sequence, and record the sensor angles collected by the angle sensors corresponding to each memory position. Then, substitute the corresponding calibration angles and sensor angles into the calibration relationship function to solve for the vibration calibration coefficients.

[0018] Preferably, the calibration relationship function in step A21 is:

[0019]

[0020] in, For the calibration angle, Let (a, b, c) be the sensor angle value, and (a, b, c) be the vibration calibration coefficient.

[0021] Preferably, the calibration coefficients include vibration calibration coefficients and non-vibration calibration coefficients, and step S2 includes:

[0022] Step S21: Obtain the sensor coordinates of the six-axis sensor, and calculate the angle value based on the sensor coordinates;

[0023] Step S22: Determine whether the vibrator is turned on:

[0024] If so, then the vibration calibration coefficient is extracted as the calibration coefficient;

[0025] If not, then the non-vibration calibration coefficient is extracted as the calibration coefficient.

[0026] Preferably, in step S21, the formula for calculating the angle value based on the sensor coordinates is:

[0027]

[0028] in, The angle value is given, ATAN is the arctangent function, (x,y,z) is the sensor coordinate, SQRT is the arithmetic square root function, and PI is pi (PI = 3.1415926535).

[0029] The present invention also provides a tilt angle detection system for an electric bed, which applies the above-described tilt angle detection method. The tilt angle detection system includes:

[0030] A storage module is used to store the correspondence between the operating state of the vibrator and the corresponding calibration coefficients;

[0031] The position adjustment module is used to control the electric bed under test to adjust to any preset memory position;

[0032] The coefficient acquisition module, connected to the position adjustment module and the storage module, is used to acquire the angle value collected by the six-axis sensor at the current memory position and extract the corresponding calibration coefficient according to the working state of the vibrator.

[0033] An angle judgment module, connected to the coefficient acquisition module, is used to process the calibration coefficient and the angle value to obtain a calibrated angle value. When the difference between the calibrated angle value and the calibration angle corresponding to the memory position is within the error range, it outputs a tilt angle detection result indicating that the calibration angle test of the corresponding memory position has passed the standard. When the difference between the calibrated angle value and the calibration angle corresponding to the memory position is not within the error range, it records one retest count. When the number of retests does not exceed a preset threshold, it reacquires the angle value. When the number of retests exceeds the preset threshold, it outputs a tilt angle detection result indicating that the calibration angle test of the corresponding memory position has failed the standard.

[0034] Preferably, the calibration coefficients include vibration calibration coefficients and pre-configured non-vibration calibration coefficients. If an angle sensor is placed on the bed frame of a standard electric bed, then the tilt angle detection system further includes:

[0035] The vibration calibration coefficient calculation module is connected to the storage module and the angle sensor. It is used to turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to multiple preset memory positions in sequence. It records the sensor angle collected by the angle sensor at each memory position. Then, it processes the vibration calibration coefficient according to the preset calibration angle corresponding to each memory position and the sensor angle to obtain the vibration calibration coefficient and stores it in the storage module.

[0036] Preferably, the vibration calibration coefficient calculation module includes:

[0037] The first calculation unit is used to construct the calibration relationship function between the calibration angle and the corresponding sensor angle;

[0038] The second calculation unit, connected to the first calculation unit, is used to turn on the vibrator of the standard electric bed and control the standard electric bed to be adjusted to each of the memory positions in sequence, and record the sensor angles collected by the angle sensors corresponding to each memory position. Then, the corresponding calibration angles and sensor angles are substituted into the calibration relationship function to solve for the vibration calibration coefficient.

[0039] Preferably, the calibration relationship function in the first calculation unit is:

[0040]

[0041] in, For the calibration angle, Let (a, b, c) be the sensor angle value, and (a, b, c) be the vibration calibration coefficient.

[0042] The above technical solution has the following advantages or beneficial effects: This angle detection system takes into account external interference, calculates the calibration coefficient under vibration interference before the testing stage, and calibrates the angle collected by the six-axis sensor during the testing stage, so as to provide the measurement accuracy and stability of the six-axis sensor, accurately detect whether the electric bed is correctly adjusted in angle, and adapt to application scenarios with higher precision and requirements. Attached Figure Description

[0043] Figure 1 A flowchart illustrating a method for detecting the tilt angle of an electric bed, as described in a preferred embodiment of the present invention.

[0044] Figure 2A flowchart illustrating the process of obtaining the vibration calibration coefficient is shown in a preferred embodiment of the present invention.

[0045] Figure 3 This is a schematic diagram of a sub-process of step A2 in a preferred embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of a sub-process of step S2 in a preferred embodiment of the present invention;

[0047] Figure 5 A schematic diagram of the tilt angle detection system for an electric bed is shown in a preferred embodiment of the present invention. Detailed Implementation

[0048] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment; other embodiments that conform to the spirit of the present invention may also fall within the scope of the present invention.

[0049] In a preferred embodiment of the present invention, based on the above-mentioned problems existing in the prior art, a method for detecting the tilt angle of an electric bed is provided. The method is characterized in that the electric bed under test has a built-in vibrator and a six-axis sensor, and a pre-configured correspondence between the working state of the vibrator and the corresponding calibration coefficients is also provided. Figure 1 As shown, the tilt angle detection method includes:

[0050] Step S1: Control the electric bed under test to adjust to any preset memory position;

[0051] Step S2: Obtain the angle value collected by the six-axis sensor at the current memory position and extract the corresponding calibration coefficient according to the working state of the vibrator.

[0052] Step S3: Process the calibration coefficient and angle value to obtain the calibrated angle value, and determine whether the difference between the calibrated angle value and the calibrated angle corresponding to the memory position is within the error range.

[0053] If so, output the tilt angle detection result indicating that the calibration angle test of the corresponding memory position has met the standard;

[0054] If not, record one retest count. If the number of retests does not exceed the preset threshold, return to step S2. If the number of retests exceeds the preset threshold, output the tilt angle detection result indicating that the calibration angle test of the corresponding memory position is not up to standard.

[0055] Specifically, in this embodiment, the electric bed needs to undergo a series of tests before leaving the factory. The electric bed has many modes (designated position, ZG mode, music mode, reading mode, sleep mode, TV mode). Each mode has a preset memory position. The switching between modes is achieved by changing the tilt angle of the electric bed through the linear actuator (specifically, electric push rod) on the electric bed.

[0056] During the testing phase, an angle sensor (usually a six-axis sensor) is used to detect whether the electric bed has been adjusted to the calibrated angle corresponding to the current mode. Therefore, it is very important whether the six-axis sensor can accurately measure the tilt angle of the electric bed, which directly determines whether the electric bed is working properly. The massage function on the electric bed will activate the vibrator. Under the interference of the vibrator, the detection accuracy of the six-axis sensor will be greatly reduced. Therefore, it is necessary to calibrate the angle measured by the six-axis sensor according to the working status of the vibrator on the electric bed.

[0057] First, control the electric bed under test to adjust to any preset mode. Each preset mode corresponds to a memory position (for example, the electric bed is tilted 15 degrees in reading mode). At this time, the electric bed controls the linear actuator (specifically, the electric push rod) to adjust the tilt angle of the electric bed.

[0058] Next, after the linear actuator (specifically, the electric push rod) stops working, it is necessary to measure the tilt angle of the electric bed to detect whether the electric bed has reached the specified memory position. However, since the electric bed has a massage function, the vibration of the vibrator during the massage will cause errors in the angle measurement. Therefore, it is necessary to determine whether to turn on the vibrator. When the vibrator is turned on, the angle value of the six-axis sensor needs to be calibrated according to the pre-configured vibration calibration coefficient. When the vibrator is not turned on, the angle value of the six-axis sensor needs to be calibrated according to the pre-configured non-vibration calibration coefficient.

[0059] Next, the calibrated angle value of the six-axis sensor is obtained and compared with the calibrated angle corresponding to the memory position of the current preset mode to determine whether it is within the error range. If it is within the error range, the electric machine is adjusted to the next preset mode for angle detection. If it is not within the error range, the machine returns to obtain the angle of the six-axis sensor again and performs angle detection again in the current preset mode. If it is still not within the error range after three re-detections, an angle test failure is indicated.

[0060] This angle detection system takes into account external interference and calibrates the angles measured by the six-axis sensor, thereby improving the measurement accuracy and stability of the six-axis sensor and adapting to application scenarios with higher precision and requirements.

[0061] In a preferred embodiment of the present invention, the operating state includes a vibration state and a non-vibration state, and the calibration coefficient includes a vibration calibration coefficient and a pre-configured non-vibration calibration coefficient, then as follows: Figure 2 As shown, the process of obtaining the vibration calibration coefficients is included before performing step S1:

[0062] Step A1: Place the angle sensor on the bed frame of the standard electric bed;

[0063] Step A2: Turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to multiple preset memory positions. Record the sensor angles collected by the angle sensors corresponding to each memory position. Then, process the preset calibration angles and sensor angles corresponding to each memory position to obtain vibration calibration coefficients and store them.

[0064] In a preferred embodiment of the present invention, such as Figure 3 As shown, step A2 includes:

[0065] Step A21: Construct the calibration relationship function between the calibration angle and the corresponding sensor angle;

[0066] Step A22: Turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to each memory position in sequence. Record the sensor angles collected by the angle sensor at each memory position. Then, substitute the corresponding calibration angles and sensor angles into the calibration relationship function to solve for the vibration calibration coefficients.

[0067] In a preferred embodiment of the present invention, the calibration relationship function in step A21 is:

[0068]

[0069] in, To calibrate the angle, Here, (a,b,c) represents the sensor angle value, and (a,b,c) represents the vibration calibration coefficient.

[0070] Specifically, in this embodiment, the vibration calibration coefficient is measured on a standard electric bed before the testing process of the electric bed under test. The test environment is set with three memory positions: a first memory position, a second memory position, and a third memory position. The corresponding sensor angles collected include the first angle value, the second angle value, and the third angle value.

[0071] The specific steps are as follows: Turn on the massage mode of the electric bed to activate the vibrator, then send a command to the electric bed. Place the angle sensor on the bed frame. This is used to correct the vibration calibration coefficients (a, b, c).

[0072] Control the standard electric bed to adjust to the first memory position (the bed automatically moves to a 15-degree angle), and record the first calibrated angle and the first angle value at this time. For example, (16.3, 15.0) is...

[0073] Control the standard electric bed to adjust to the second memory position (the bed automatically moves to a 20-degree angle), and record the second calibrated angle and the first angle value at this time. For example, (20.90, 20.0) is...

[0074] Control the standard electric bed to adjust to the third memory position (the bed automatically moves to a 35-degree angle), and record the third calibrated angle and the third angle value at this time. For example, (36.80, 35.0) is...

[0075] The test value Substitute into the formula respectively The coefficients a, b, and c are calculated.

[0076] For example, substituting (16.3, 15.0), (20.90, 20.0), and (36.80, 35.0) into the formula... get (a,b,c) is (-0.00625, 0.446, 4.211).

[0077] The values ​​of a, b, and c are stored in the storage module.

[0078] In a preferred embodiment of the present invention, the calibration coefficients include vibration calibration coefficients and non-vibration calibration coefficients, such as... Figure 4 As shown, step S2 includes:

[0079] Step S21: Obtain the sensor coordinates of the six-axis sensor and calculate the angle value based on the sensor coordinates;

[0080] Step S22, determine whether the vibrator is turned on:

[0081] If so, then extract the vibration calibration coefficient as the calibration coefficient;

[0082] If not, then extract the non-vibration calibration coefficient as the calibration coefficient.

[0083] In a preferred embodiment of the present invention, in step S21, the formula for calculating the angle value based on the sensor coordinates is as follows:

[0084]

[0085] in, Here, Δt is the angle value, ATAN is the arctangent function, (x,y,z) are the sensor coordinates, SQRT is the arithmetic square root function, and PI is pi (PI = 3.1415926535).

[0086] Specifically, in this embodiment, the calibration relationship function between the aforementioned calibration angle and the corresponding sensor angle also represents the relationship between the angle value collected by the six-axis sensor and the calibrated angle in the actual testing process. Therefore, the angle value is calibrated based on this calibration relationship function.

[0087] With the vibrator on, the vibration calibration coefficients (-0.00625, 0.446, 4.211) calculated in the aforementioned embodiments are used as calibration coefficients. The calibration coefficients and the angle values ​​calculated based on the sensor coordinates (x, y, z) of the six-axis sensor are used as... Substitution Calculated This refers to the angle value (i.e., the angle value actually acquired by the six-axis sensor). The calibrated angle calculated under the condition that the vibrator is working;

[0088] The preset non-vibration calibration coefficient is (0, 1, 0). When the vibrator is not turned on, the non-vibration calibration coefficient (0, 1, 0) is used as the calibration coefficient. The calibration coefficient and the angle value calculated based on the sensor coordinates (x, y, z) of the six-axis sensor are then compared. Substitution get The angle value. This is the calibrated angle calculated under non-vibration conditions.

[0089] This invention also provides a tilt angle detection system for an electric bed, which applies the above-described tilt angle detection method, such as... Figure 5 As shown, the tilt angle detection system includes:

[0090] Storage module 1 is used to store the correspondence between the working state of the vibrator and the corresponding calibration coefficients;

[0091] Position adjustment module 2 is used to control the electric bed under test to adjust to any preset memory position;

[0092] The coefficient acquisition module 3 is connected to the position adjustment module 2 and the storage module 1. It is used to acquire the angle value collected by the six-axis sensor at the current memory position and extract the corresponding calibration coefficient according to the working state of the vibrator.

[0093] The angle judgment module 4, connected to the coefficient acquisition module 3, is used to process the calibration coefficient and angle value to obtain the calibrated angle value. When the difference between the calibrated angle value and the calibration angle corresponding to the memory position is within the error range, it outputs the tilt angle detection result indicating that the calibration angle test of the corresponding memory position has passed the standard. When the difference between the calibrated angle value and the calibration angle corresponding to the memory position is not within the error range, it records one retest number. When the number of retests does not exceed the preset threshold, it reacquires the angle value. When the number of retests exceeds the preset threshold, it outputs the tilt angle detection result indicating that the calibration angle test of the corresponding memory position has failed the standard.

[0094] In a preferred embodiment of the present invention, the calibration coefficients include vibration calibration coefficients and pre-configured non-vibration calibration coefficients. An angle sensor is placed on the bed frame of a standard electric bed, then... Figure 5 As shown, the tilt angle detection system also includes:

[0095] The vibration calibration coefficient calculation module 5 is connected to the storage module 1 and the angle sensor. It is used to turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to multiple preset memory positions in sequence. It records the sensor angles collected by the angle sensor at each memory position. Then, it processes the vibration calibration coefficients according to the preset calibration angles corresponding to each memory position and the angles of each sensor and stores them in the storage module.

[0096] In a preferred embodiment of the present invention, such as Figure 5 As shown, the vibration calibration coefficient calculation module 5 includes:

[0097] The first calculation unit 51 is used to construct the calibration relationship function between the calibration angle and the corresponding sensor angle;

[0098] The second calculation unit 52 is connected to the first calculation unit 51. It is used to turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to each memory position in sequence. It records the sensor angles collected by the angle sensors corresponding to each memory position. Then, it substitutes the corresponding calibration angles and sensor angles into the calibration relationship function to solve for the vibration calibration coefficients.

[0099] In a preferred embodiment of the present invention, the calibration relationship function in the first calculation unit 51 is:

[0100]

[0101] in, To calibrate the angle, Here, (a,b,c) represents the sensor angle value, and (a,b,c) represents the vibration calibration coefficient.

[0102] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present invention.

Claims

1. A method for detecting the tilt angle of an electric bed, characterized in that, The electric bed under test has a built-in vibrator and a six-axis sensor, and is pre-configured with a correspondence between the vibrator's operating state and the corresponding calibration coefficients. Therefore, the tilt angle detection method includes: Step S1: Control the electric bed under test to adjust to any preset memory position; Step S2: Obtain the angle value collected by the six-axis sensor at the current memory position and extract the corresponding calibration coefficient according to the working state of the vibrator. Step S3: Process the calibration coefficient and the angle value to obtain the calibrated angle value, and determine whether the difference between the calibrated angle value and the calibration angle corresponding to the memory position is within the error range. If so, output the tilt angle detection result indicating that the calibration angle test of the corresponding memory position has met the standard; If not, record one retest count. If the number of retest counts does not exceed a preset threshold, return to step S2. If the number of retest counts exceeds the preset threshold, output the tilt angle detection result indicating that the calibration angle test of the corresponding memory position is not up to standard.

2. The tilt angle detection method according to claim 1, characterized in that, The operating state includes a vibration state and a non-vibration state. Therefore, the calibration coefficient includes a vibration calibration coefficient and a pre-configured non-vibration calibration coefficient. Before performing step S1, the process of obtaining the vibration calibration coefficient is also included. Step A1: Place the angle sensor on the bed frame of the standard electric bed; Step A2: Turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to multiple preset memory positions. Record the sensor angles collected by the angle sensors corresponding to each memory position. Then, process the preset calibration angles corresponding to each memory position and the sensor angles to obtain the vibration calibration coefficients and store them.

3. The tilt angle detection method according to claim 2, characterized in that, Step A2 includes: Step A21: Construct the calibration relationship function between the calibration angle and the corresponding sensor angle; Step A22: Turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to each of the memory positions in sequence, and record the sensor angles collected by the angle sensors corresponding to each memory position. Then, substitute the corresponding calibration angles and sensor angles into the calibration relationship function to solve for the vibration calibration coefficients.

4. The tilt angle detection method according to claim 3, characterized in that, The calibration relationship function in step A21 is: ； in, For the calibrated angle, Let be the angle value of the sensor, and a, b, c be the vibration calibration coefficients.

5. The tilt angle detection method according to claim 1, characterized in that, The calibration coefficients include vibration calibration coefficients and non-vibration calibration coefficients. Step S2 includes: Step S21: Obtain the sensor coordinates of the six-axis sensor, and calculate the angle value based on the sensor coordinates; Step S22: Determine whether the vibrator is turned on: If so, then the vibration calibration coefficient is extracted as the calibration coefficient; If not, then the non-vibration calibration coefficient is extracted as the calibration coefficient.

6. The tilt angle detection method according to claim 5, characterized in that, In step S21, the formula for calculating the angle value based on the sensor coordinates is as follows: ； in, The angle value is... Let x, y, z be the arctangent function, and let x, y, z be the sensor coordinates. The arithmetic square root function, .

7. A tilt angle detection system for an electric bed, characterized in that, The tilt angle detection system, using the tilt angle detection method as described in any one of claims 1-6, comprises: A storage module is used to store the correspondence between the operating state of the vibrator and the corresponding calibration coefficients; The position adjustment module is used to control the electric bed under test to adjust to any preset memory position; The coefficient acquisition module, connected to the position adjustment module and the storage module, is used to acquire the angle value collected by the six-axis sensor at the current memory position and extract the corresponding calibration coefficient according to the working state of the vibrator. An angle judgment module, connected to the coefficient acquisition module, is used to process the calibration coefficient and the angle value to obtain a calibrated angle value. When the difference between the calibrated angle value and the calibration angle corresponding to the memory position is within the error range, it outputs a tilt angle detection result indicating that the calibration angle test of the corresponding memory position has passed the standard. When the difference between the calibrated angle value and the calibration angle corresponding to the memory position is not within the error range, it records one retest count. When the number of retests does not exceed a preset threshold, it reacquires the angle value. When the number of retests exceeds the preset threshold, it outputs a tilt angle detection result indicating that the calibration angle test of the corresponding memory position has failed the standard.

8. The tilt angle detection system according to claim 7, characterized in that, The calibration coefficients include vibration calibration coefficients and pre-configured non-vibration calibration coefficients. If an angle sensor is placed on the bed frame of a standard electric bed, the tilt angle detection system further includes: The vibration calibration coefficient calculation module is connected to the storage module and the angle sensor. It is used to turn on the vibrator of the standard electric bed and control the standard electric bed to adjust to multiple preset memory positions in sequence. It records the sensor angle collected by the angle sensor at each memory position. Then, it processes the vibration calibration coefficient according to the preset calibration angle corresponding to each memory position and the sensor angle to obtain the vibration calibration coefficient and stores it in the storage module.

9. The tilt angle detection system according to claim 8, characterized in that, The vibration calibration coefficient calculation module includes: The first calculation unit is used to construct a calibration relationship function between the calibration angle and the corresponding sensor angle; The second calculation unit, connected to the first calculation unit, is used to turn on the vibrator of the standard electric bed and control the standard electric bed to be adjusted to each of the memory positions in sequence, and record the sensor angles collected by the angle sensors corresponding to each memory position. Then, the corresponding calibration angles and sensor angles are substituted into the calibration relationship function to solve for the vibration calibration coefficient.

10. The tilt angle detection system according to claim 9, characterized in that, The calibration relationship function in the first calculation unit is: ； in, For the calibrated angle, Let be the angle value of the sensor, and a, b, c be the vibration calibration coefficients.

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