Electric bed control method for preventing misoperation and electric bed

Abstract

The present invention discloses an electric bed, including a bed board, an armrest, a controller, a medium sensor and a force sensor; the armrest is mounted on the side end of the bed board; the medium sensor and the force sensor are arranged on the armrest, and the medium sensor and the force sensor are electrically connected to the controller respectively. By arranging the medium sensor and the force sensor on the armrest simultaneously, after the medium sensor senses that the user's hand ring is holding the armrest, and synchronously detects the pulling force or pushing force applied to the armrest, the combination realizes the precise control of the electric bed, prevents the wrong intention recognition caused by the side pressure, downward pressure or torsional force of the user's body during the use of the electric bed, and prevents the wrong intention recognition caused by the contact and tearing of bedding, sheets, etc., so that the electric bed can more accurately identify the user's use action intention and give precise control instructions.

Description

Technical Field

[0001] The invention relates to bedding, and in particular to an electric bed control method and an electric bed for preventing misoperation. Background Art

[0002] The command control component of the electric bed is set on the armrest of the bed. When the user needs the assistance of the electric bed to lie down or get up, it is easy to operate and ergonomically provide a good user experience. The above design is convenient for users to use, but there is a possibility that due to other inadvertent actions of the user such as turning over on the bed board, it is easy to trigger the command control component by mistake, causing the electric bed to misidentify the user's action intention and perform operations that do not meet the user's intention. For example, when sleeping, bedding and other bedding may touch the armrests and control buttons, causing the electric bed to suddenly tilt up, which is not only easy to scare the user, but also prone to safety accidents. Summary of the invention

[0003] The main purpose of the present invention is to provide an electric bed, aiming to solve the technical problem that the existing electric beds are prone to misoperation.

[0004] The present invention provides an electric bed, comprising a bed board, an armrest, a controller, a medium sensor and a force sensor;

[0005] The armrest is mounted on the side end of the bed board; the medium sensor and the force sensor are arranged on the armrest, and the medium sensor and the force sensor are electrically connected to the controller respectively.

[0006] Preferably, the bed board comprises at least a headboard and a footboard which are movably connected, and the headboard and the footboard are laid flat to form a plane of the bed board, and the armrest is assembled on a first side end of the headboard, and the first side end is perpendicular to the end where the movably connected end is located.

[0007] Preferably, the handrail comprises a crossbeam and an assembly pillar, one end of the assembly pillar is connected to the crossbeam, and the other end is connected to the first side end; the length direction of the crossbeam is parallel to the first side end.

[0008] Preferably, the medium sensors are arranged in two lines on the side end surface of the beam, the arrangement direction of the lines is consistent with the length direction of the beam, and the length of the lines is equal to the length of the beam.

[0009] Preferably, the crossbeam is a cylinder, the side end surface includes a first area close to the bed board and a second area away from the bed board, the side end surface is bisected by a perpendicular bisector parallel to the length direction of the crossbeam to form the first area and the second area, and the media sensor is distributed in the second area.

[0010] Preferably, the two media sensors are respectively distributed in the first designated area and the second designated area in the second area, with one end of the perpendicular bisector as the starting end of the angle and the other end of the perpendicular bisector as the ending end of the angle, the first designated area is the side surface area corresponding to between 0 degrees and 45 degrees, and the second designated area is the side surface area corresponding to between 180 degrees and 135 degrees.

[0011] Preferably, the tail of the assembly support is connected to the first side end, and the force sensor is assembled on the tail to detect the force properties in the length direction of the beam.

[0012] Preferably, the force sensor comprises a micro-displacement switch, a slider, a transmission piston, a fixed base and a micro-displacement slide groove;

[0013] The fixed base is fixedly connected to the first side end of the headboard, the micro-displacement slot is provided on the fixed base, the slider, the transmission piston and the micro-displacement switch are sequentially installed in the micro-displacement slot, and the tail of the assembly support is fixedly connected to the slider.

[0014] The present application also provides a method for controlling an electric bed to prevent misoperation, using the electric bed, the method comprising:

[0015] receiving the capacitance signal captured by the medium sensor and recording the first moment corresponding to the current moment;

[0016] Determining whether the capacitance signal is within a preset range;

[0017] If yes, determining whether the static force captured by the force sensor is received within a preset time period from the first moment;

[0018] If so, analyzing whether the force direction corresponding to the static force is a preset direction;

[0019] If yes, obtaining the control instruction corresponding to the preset direction;

[0020] The electric bed is operated according to the control instruction.

[0021] Preferably, before the step of operating the electric bed according to the control instruction, the step includes:

[0022] Determining whether the current state of the bed board of the electric bed is the initial state corresponding to the control instruction;

[0023] If not, an instruction for operating the electric bed according to the control instruction is generated.

[0024] The beneficial technical effect of the present application is as follows: by synchronously arranging the medium sensor and the force sensor on the armrest, after the medium sensor senses the user's wrist holding the armrest, it synchronously detects the pulling force or pushing force applied to the armrest, and together they realize precise control of the electric bed, thereby preventing the incorrect intention recognition caused by the side pressure, downward pressure or torsional force of the user's body during the use of the electric bed, and preventing the incorrect intention recognition caused by contact and tearing of bedding, sheets, etc., so that the electric bed can more accurately identify the user's usage action intention and give precise control instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of an electric bed according to an embodiment of the present application;

[0026] Figure 2 A flowchart of a method for controlling an electric bed to prevent misoperation according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] Reference Figure 1 The electric bed of this embodiment includes a bed board 1, an armrest 2, a controller, a medium sensor 3 and a force sensor 4;

[0028] The armrest 2 is mounted on the side end of the bed board 1; the medium sensor 3 and the force sensor 4 are arranged on the armrest 2, and the medium sensor 3 and the force sensor 4 are electrically connected to the controller respectively.

[0029] In this embodiment, the medium sensor 3 and the force sensor 4 are simultaneously arranged on the armrest 2. After the medium sensor 3 senses that the user's wrist is gripping the armrest 2, it simultaneously detects the pulling force or pushing force applied to the armrest 2. Together, they realize precise control of the electric bed, thereby preventing erroneous intention recognition caused by the side pressure, downward pressure or torsional force of the user's body during the use of the electric bed, and preventing erroneous intention recognition caused by contact and tearing of bedding, sheets, etc., so that the electric bed can more accurately identify the user's usage action intention and give precise control instructions.

[0030] Furthermore, the bed board 1 includes at least a headboard 11 and a footboard 12 that are movably connected, and the headboard 11 and the footboard 12 form a plane of the bed board 1 when laid flat, and the armrest 2 is assembled on the first side end of the headboard 11, and the first side end is perpendicular to the end where the movably connected end is located.

[0031] In this embodiment, the bed board 1 is composed of movable linked boards, which can be composed of two movable boards, such as a headboard 11 and a footboard 12, so that the headboard 11 can be controlled to tilt up a certain angle according to instructions to facilitate the user to get up; or to drop a certain angle to assist the user to lie down. The bed board 1 of other embodiments of the present application can be spliced ​​by three or more movable linked boards, so as to more conveniently control the tilting or lowering of the movable board according to different instructions corresponding to different movable boards, so as to meet more user needs. For example, the bed board 1 may include a movable linked backboard, a seat board, a leg board and a foot board, so as to support different parts of the user's body, and the armrest 2 can be assembled on the backboard for user operation. The bed board 1 of other embodiments of the present application is an integrally formed board, which can achieve overall tilting or tilting at different angles, with a simple shape and low cost. The number of armrests 2 in this embodiment is one, and one armrest 2 can be preferably installed on one side of the bed board 1 corresponding to the right hand when the user lies flat on the bed board 1. Other embodiments include two armrests 2, which are arranged at two opposite ends of the bed board 1, one end of which corresponds to the right hand side of the user when lying flat on the bed board 1, and the other end of which corresponds to the left hand side of the user, which is more convenient for the user to apply force to the armrests 2 in a balanced manner, and is more suitable for the user's usage habits. This embodiment realizes the movable link through a movable rotating part or a movable hinge.

[0032] Furthermore, the handrail 2 includes a crossbeam 21 and an assembly pillar 22, one end of the assembly pillar 22 is connected to the crossbeam 21, and the other end is connected to the first side end; the length direction of the crossbeam 21 is parallel to the first side end.

[0033] The armrest 2 of this embodiment includes a fixedly connected crossbeam 21 and an assembly support 22, and the length direction of the crossbeam 21 is parallel to the first side end, that is, the length direction of the crossbeam is consistent with the direction from head to toe when the user lies flat on the bed board 1 normally, so that the user can grasp the armrest 2 with his hands in a normal lying state to realize the command control of the electric bed. The armrest 2 of other embodiments of the present application includes an integrally formed crossbeam 21 and an assembly support 22, so that the force acting on the armrest 2 is transmitted to the force sensor 4.

[0034] Furthermore, the medium sensors 3 are arranged in two lines on the side end surface of the beam 21 , the arrangement direction of the lines is consistent with the length direction of the beam 21 , and the length of the lines is equal to the length of the beam 21 .

[0035] Furthermore, the crossbeam 21 is a cylinder, and the side end surface includes a first area close to the bed board and a second area away from the bed board. The side end surface is bisected by a perpendicular bisector parallel to the length direction of the crossbeam 21 to form the first area and the second area, and the medium sensor 3 is distributed in the second area.

[0036] Furthermore, the two media sensors 3 are respectively distributed in a first designated area and a second designated area in the second area, with one end of the perpendicular bisector as the starting end of the angle and the other end of the perpendicular bisector as the ending end of the angle, the first designated area being the side end surface area corresponding to between 0 degrees and 45 degrees, and the second designated area being the side end surface area corresponding to between 180 degrees and 135 degrees.

[0037] The two linearly deployed media sensors 3 of this embodiment are independent capacitive touch sensors. The effective contact area of ​​the user's grip on the armrest 2 is determined through the synergistic effect of the two capacitive touch sensors. When the two capacitive touch sensors simultaneously feel the touch of the user's hand, it is determined to be an effective grip, thereby reducing the error recognition rate. In other embodiments of the present application, the number of capacitive touch sensors can be selected to be more than two layout designs. In this embodiment, two capacitive touch sensors are preferably used, which saves costs and can respond quickly. The coverage of the deployment area of ​​the two capacitive touch sensors meets the requirements of measuring the user's grip on the armrest 2. In this embodiment, the media sensor 3 is linearly deployed in the second area of ​​the side end surface away from the bed board 1 to reduce the probability of accidental touch. In addition, this embodiment divides the entire side end surface into two according to the perpendicular midline parallel to the length direction of the beam, forming a first area close to the bed board and a second area away from the bed board. By selecting the first designated area and the second designated area on the second area to respectively deploy the linearly deployed media sensors 3, it is not easy for the user who uses the electric bed and other users such as the caregivers who are located next to the electric bed to accidentally touch the media sensor 3, thereby improving the accuracy of the judgment of the effective gripping of the armrest 2 and extending the sensing life of the media sensor 3. The first designated area and the second designated area can be a circular cross section formed by cutting the cross beam 21 perpendicular to the mid-tangent line of the cross beam 21, and bisecting the circular cross section in the direction perpendicular to the bed board 1, with the diameter of the cutting line being the angle starting end and the angle ending end of 0 to 180 degrees, the second area corresponding to the direction of 0 to 45 degrees is the first designated area, and the second area corresponding to the direction of 135 to 180 degrees is the second designated area, so as to effectively avoid the area with a high probability of accidental touching by the user, further improve the accurate recognition rate of the media sensor 3, and recognize the action intention issued by the user by gripping the armrest 2 when the user needs to control the electric bed.

[0038] In other embodiments of the present application, the two plates of the medium sensor 3 are relatively arranged linearly on the side end surface of the beam 21. When the user's hand is wrapped around the armrest 2, the user's hand is located between the two plates. The distance between the two plates and the corresponding plate area remain unchanged. When the capacitance medium changes, the capacitance value fed back by the medium sensor 3 is different, thereby distinguishing the user's skin from other objects. In this embodiment, the two plates are relatively distributed on the second area of ​​the beam 21 away from the bed board 1 to reduce the interference of accidental touches during the use of the electric bed by users, thereby reducing the misjudgment rate.

[0039] In other embodiments of the present application, the medium sensor 3 is a sheet-like thin-film capacitive sensor, which is wrapped around the entire side end surface of the beam 21 for user convenience. By determining that the sensing area of ​​the user's action on the medium sensor 3 is within the mapping area corresponding to the user's single palm, it is identified as an effective grip on the armrest 2.

[0040] Furthermore, the tail of the mounting support 22 is connected to the first side end, and the force sensor 4 is mounted on the tail to detect the force properties in the length direction of the crossbeam 21 .

[0041] In this embodiment, the length direction of the crossbeam 21 is consistent with the direction of the first side end, that is, the direction from head to toe when the user lies flat on the bed board 1 normally, which is convenient for the user to hold the armrest 2 with his hand when lying flat on the bed board 1. At the same time, the force sensor 4 of this embodiment is installed at the connection between the mounting pillar 22 and the headboard 11, and the sensing axis of the detection force of the force sensor 4 is consistent with the length direction of the crossbeam 21 and the direction of the first side end, so as to detect the direction attribute of the static force applied by the user when holding the armrest 2 with his hand. In other embodiments of the present application, the crossbeam 21 is perpendicular to the direction of the first side end, which is more in line with the user's functional habit of holding the armrest 2 with his hand, and the medium sensor 3 installed on the side of the crossbeam 21 is not easily disturbed by other objects or users, and the probability of mis-touch is further reduced. By installing the force sensor 4 at the connection between the mounting pillar 22 and the headboard 11, and the sensing axis of the sensing force of the force sensor 4 is perpendicular to the length direction of the crossbeam 21, but consistent with the direction of the first side end, the direction of the static force applied by the user when holding the armrest 2 with his hand can be detected. The force sensor 4 of this embodiment is rigidly connected to the tail of the assembly pillar 22. The directional attribute of the static force applied by the user to the armrest 2 is transmitted to the force sensor 4 through the assembly pillar 22, so that the force sensor 4 can identify whether the force applied by the user is a hand-pulling force or a hand-pushing force, so as to accurately wake up the corresponding operation instructions.

[0042] Furthermore, the force sensor 4 includes a micro-displacement switch, a slider, a transmission piston, a fixed base and a micro-displacement slot; the fixed base is fixedly connected to the first side end of the headboard 11, the micro-displacement slot is opened on the fixed base, the slider, the transmission piston and the micro-displacement switch are installed in the micro-displacement slot in sequence, and the tail of the assembly pillar 22 is fixedly connected to the slider.

[0043] In this embodiment, the micro-displacement of the armrest 2 is monitored by a micro-displacement switch, so as to accurately identify the direction of the force applied by the user to the armrest 2. The micro-displacement switch of this embodiment includes but is not limited to a photoelectric switch, a micro switch, and the like.

[0044] The force sensor 4 of the present embodiment includes a uniaxial micro-displacement sensor, and the force measurement direction corresponding to the uniaxial micro-displacement sensor is consistent with the length direction of the crossbeam 21. By using a uniaxial micro-displacement sensor as the force sensor 4 in the present solution, only the forces in the two directions of the same axis are detected in a targeted manner, so as to improve the detection accuracy of the force direction and reduce the probability of misjudgment of instructions due to misoperation. For example, in the present embodiment, the force in one axial direction sensed by the uniaxial micro-displacement sensor is a thrust, and the force in the other axial direction is a tension. For example, the force in the direction from the user's feet to the head is defined as a tension, and the force in the direction from the user's head to the feet is defined as a thrust, so as to match the user's intention to apply force. Figure 1 To.

[0045] In another embodiment of the present application, the force sensor 4 includes a multi-axis micro-displacement sensor, and the force measurement direction of one axis of the multi-axis micro-displacement sensor is consistent with the length direction of the crossbeam. By not making any restrictions on the model of the force sensor 4, the assembly adaptability of the electric bed and the force sensor 4 is improved, and it is convenient to replace parts. However, during use, the controller only recognizes the force in a fixed axial direction of the multi-axis micro-displacement sensor, such as only the directional force and the reverse force in the direction from the user's feet to the head, and makes command sensing. When the force in other axial directions is sensed, no command response is made.

[0046] Reference Figure 2 This embodiment also provides a method for controlling an electric bed to prevent misoperation, using the electric bed, the method comprising:

[0047] S1: receiving the capacitance signal captured by the medium sensor 3 and recording the first moment corresponding to the current moment;

[0048] S2: Determine whether the capacitance signal is within a preset range;

[0049] S3: If yes, determining whether the static force captured by the force sensor 4 is received within a preset time period from the first moment;

[0050] S4: If yes, analyzing whether the force direction corresponding to the static force is a preset direction;

[0051] S5: If yes, obtain the control instruction corresponding to the preset direction;

[0052] S6: Operate the electric bed according to the control instruction.

[0053] This embodiment first identifies the capacitance signal of the medium sensor 3 to correctly identify that the user is holding the armrest 2 with his hand, and receives the static force applied to the armrest 2 by the user after holding the armrest 2 within a preset time period to determine the user's action intention that requires the assistance of the electric bed, and further identifies the direction of the static force to control the corresponding movable plate of the bed board 1 to tilt or fall, so as to assist the user to stand up or lie flat. By synchronously setting the medium sensor 3 and the force sensor 4 on the armrest 2, after the medium sensor 3 senses the user's hand holding the armrest 2, and synchronously detects the pulling force or pushing force applied to the armrest 2, the combination realizes the precise control of the electric bed, prevents the misoperation caused by the mistouch during the use of the electric bed, improves the accuracy of the electric bed in correctly identifying the user's action intention, and reduces the occurrence of accidents. The above-mentioned preset time period from the first moment, for example, between 10ms and 1000ms, indicates that the user holding the armrest 2 and the force applied to the armrest 2 are the user's true intention to wake up the corresponding instruction.

[0054] Further, before the step S6 of operating the electric bed according to the control instruction, the method further comprises:

[0055] S61: Determine whether the current state of the bed board of the electric bed is the initial state corresponding to the control instruction;

[0056] S62: If not, generate an instruction for operating the electric bed according to the control instruction.

[0057] This embodiment correctly identifies the user's action intention and combines it with the posture parameters of the electric bed to accurately control the electric bed to present a posture that meets the user's needs, further reducing misoperation. The posture parameters of this embodiment include the tilting angle or the descending angle of the movable bed board. For example, if the user's action intention is correctly identified as auxiliary lying flat, the corresponding posture parameter of the starting state is that the headboard 11 is tilted 60 degrees compared to the footboard 12, and the posture parameter of the terminal state is that the headboard 11 is tilted 0 degrees compared to the footboard 12. When it is judged that the posture parameter of the current electric bed is that the headboard 11 is tilted 60 degrees compared to the footboard 12, it is determined to be the starting state corresponding to the auxiliary lying flat instruction, and the headboard 11 is controlled to descend according to the auxiliary lying flat instruction, and descend to the headboard 11 Compared with the footboard 12, it is tilted 0 degrees, that is, flat. If it is judged that the posture parameter of the current electric bed is not the starting state corresponding to the auxiliary lying flat instruction, that is, the posture parameter is not that the headboard 11 is tilted 60 degrees compared to the footboard 12, the corresponding auxiliary lying flat instruction is not generated to avoid misoperation.

[0058] 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 method for controlling an electric bed to prevent misoperation, characterized in that: The electric bed comprises a bed board, an armrest, a controller, a medium sensor and a force sensor, the medium sensor and the force sensor are arranged on the armrest, the armrest comprises a crossbeam, and the method comprises: receiving the capacitance signal captured by the medium sensor and recording the first moment corresponding to the current moment; Determining whether the capacitance signal is within a preset range; If yes, determining whether the static force captured by the force sensor is received within a preset time period from the first moment; If so, analyzing whether the force direction corresponding to the static force is a preset direction; If yes, obtaining the control instruction corresponding to the preset direction; operating the electric bed according to the control instruction; The crossbeam is a cylinder, and the side end surface of the crossbeam includes a first area close to the bed board and a second area away from the bed board, and the side end surface is bisected by a perpendicular bisector parallel to the length direction of the crossbeam to form the first area and the second area, and the media sensor is distributed in the second area; The two media sensors are respectively distributed in the first designated area and the second designated area in the second area, with one end of the perpendicular midline as the angle starting end and the other end of the perpendicular midline as the angle ending end. The first designated area is the side end surface area corresponding to between 0 degrees and 45 degrees, and the second designated area is the side end surface area corresponding to between 180 degrees and 135 degrees.

2. The electric bed control method for preventing misoperation according to claim 1, characterized in that: Before the step of operating the electric bed according to the control instruction, the method includes: Determining whether the current state of the bed board of the electric bed is the initial state corresponding to the control instruction; If not, an instruction for operating the electric bed according to the control instruction is generated.

3. An electric bed, applied to the method according to any one of claims 1-2, characterized in that: The armrest is mounted on the side end of the bed board, and the medium sensor and the force sensor are electrically connected to the controller respectively.

4. The electric bed according to claim 3, characterized in that: The bed board at least includes a headboard and a footboard that are movably connected. The headboard and the footboard form a plane of the bed board when laid flat. The armrest is assembled on a first side end of the headboard, and the first side end is perpendicular to the end where the movably connected end is located.

5. The electric bed according to claim 4, characterized in that: The handrail further comprises an assembly pillar, one end of which is connected to the crossbeam, and the other end of which is connected to the first side end; the length direction of the crossbeam is parallel to the first side end.

6. The electric bed according to claim 3, characterized in that: The medium sensors are arranged in two lines on the side end surface of the beam, the arrangement direction of the lines is consistent with the length direction of the beam, and the length of the lines is equal to the length of the beam.

7. The electric bed according to claim 5, characterized in that: The tail of the assembly support is connected to the first side end, and the force sensor is assembled on the tail to detect the force properties in the length direction of the beam.

8. The electric bed according to claim 5, characterized in that: The force sensor comprises a micro-displacement switch, a slider, a transmission piston, a fixed base and a micro-displacement slideway; The fixed base is fixedly connected to the first side end of the headboard, the micro-displacement slot is provided on the fixed base, the slider, the transmission piston and the micro-displacement switch are sequentially installed in the micro-displacement slot, and the tail of the assembly support is fixedly connected to the slider.

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