阅读说明：本技术 智能助行器的控制方法及装置、智能助行器、控制器 (Control method and device of intelligent walking aid, intelligent walking aid and controller ) 是由 龚茂 陆剑峰 于 2021-07-01 设计创作，主要内容包括：本申请实施例涉及一种智能助行器的控制方法及装置、智能助行器、控制器。该智能助行器包括车体、前轮和后轮,所述后轮由电机驱动,该方法包括如下步骤：获取所述智能助行器的移动速度；获取所述智能助行器的姿态；当所述姿态指示所述智能助行器的前端向上倾斜,且所述智能助行器的移动速度小于第一阈值,减小所述电机的扭力输出值。本申请实施例的智能助行器的控制方法,使得智能助行器能够智能判断是否需要进入智能过坎模式,并在智能过坎模式中,减小电机的扭力输出值,避免了由于过坎时速度过大,导致的扭力大增使得车体失控的状况发生。(The embodiment of the application relates to a control method and device of an intelligent walking aid, the intelligent walking aid and a controller. The intelligent walking aid comprises a car body, front wheels and rear wheels, wherein the rear wheels are driven by a motor, and the method comprises the following steps: acquiring the moving speed of the intelligent walking aid; acquiring the posture of the intelligent walking aid; and when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is less than a first threshold value, reducing the torque output value of the motor. According to the control method of the intelligent walking aid, the intelligent walking aid can intelligently judge whether the intelligent walking aid needs to enter the intelligent threshold passing mode, the torque output value of the motor is reduced in the intelligent threshold passing mode, and the situation that the vehicle body is out of control due to the fact that the torque is greatly increased due to the fact that the speed is too high when the threshold passes is avoided.)

1. A control method of an intelligent walking aid, the intelligent walking aid comprises a vehicle body, front wheels and rear wheels, the rear wheels are driven by a motor, and the method is characterized by comprising the following steps:

acquiring the moving speed of the intelligent walking aid;

acquiring the posture of the intelligent walking aid;

and when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is less than a first threshold value, reducing the torque output value of the motor.

2. The control method of the intelligent walking aid as claimed in claim 1, wherein:

the pose indicates that a front end of the intelligent walker is tilted upward when the intelligent walker meets at least one of the following conditions:

the inclination angle of the intelligent walking aid exceeds a preset second threshold value, and the inclination angle speed variation of the intelligent walking aid exceeds a preset third threshold value.

3. The method for controlling an intelligent walking aid as claimed in claim 1 or 2, wherein after the torque output value of the motor is reduced, the method further comprises the following steps:

controlling the torque output value of the motor according to the upward inclination angle of the intelligent walking aid, wherein the larger the angle is, the larger the torque output value is.

4. The method for controlling an intelligent walker according to claim 3, further comprising the steps of:

and when the upward inclination angle of the intelligent walking aid is larger than a preset maximum threshold value, reducing or stopping increasing the torque output value of the motor.

5. The control method of the intelligent walking aid as claimed in claim 1 or 2, further comprising the following steps:

recording the upward inclination angle of the intelligent walking aid as a first angle;

recording the angle of the intelligent walking aid before the intelligent walking aid tilts upwards as a second angle;

recording the maximum upward inclination angle of the intelligent walking aid as a third angle;

and when the first angle is larger than the second angle and the first angle is smaller than the third angle, increasing the torque output value of the motor.

6. The method for controlling an intelligent walking aid as claimed in claim 5, wherein after increasing the torque output value of the motor, the method further comprises the following steps:

when the upward inclination angle of the intelligent walking aid is smaller than the first angle and the upward inclination angle speed of the intelligent walking aid is zero, the torque output value of the motor is reduced.

7. The method for controlling an intelligent walking aid as claimed in claim 1, wherein before the torque output value of the motor is reduced, the method further comprises the following steps:

and entering an intelligent threshold passing mode.

8. A control method of an intelligent walking aid, the intelligent walking aid comprises a vehicle body, front wheels and rear wheels, the rear wheels are driven by a motor, and the method is characterized by comprising the following steps:

entering an intelligent threshold passing mode according to a preset trigger instruction;

acquiring the moving speed of the intelligent walking aid;

acquiring the posture of the intelligent walking aid;

when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is smaller than a first threshold value, controlling the torque output value of the motor according to the upwards inclining angle of the intelligent walking aid, wherein the larger the angle is, the larger the torque output value is.

9. A controlling means of intelligence capable ware of helping, this intelligence of helping capable ware includes automobile body, front wheel and rear wheel, the rear wheel is by motor drive, its characterized in that, the device includes:

the first moving speed acquisition module is used for acquiring the moving speed of the intelligent walking aid;

the first posture acquisition module is used for acquiring the posture of the intelligent walking aid;

the first torque output module is used for reducing the torque output value of the motor when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is smaller than a first threshold value.

10. A controlling means of intelligence capable ware of helping, this intelligence of helping capable ware includes automobile body, front wheel and rear wheel, the rear wheel is by motor drive, its characterized in that, the device includes:

the second mode switching module is used for entering an intelligent threshold passing mode according to a preset trigger instruction;

the second moving speed acquisition module is used for acquiring the moving speed of the intelligent walking aid;

the second posture acquisition module is used for acquiring the posture of the intelligent walking aid;

and the second torque output module is used for controlling the torque output value of the motor according to the upward inclination angle of the intelligent walking aid when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is less than a first threshold value, and the larger the angle is, the larger the torque output value is.

11. An intelligent walker, comprising:

at least one memory and at least one processor;

the memory for storing one or more programs;

when executed by the at least one processor, cause the at least one processor to carry out the steps of the method of controlling an intelligent walker according to any one of claims 1 to 8.

12. A controller, comprising:

at least one memory and at least one processor;

the memory for storing one or more programs;

when executed by the at least one processor, cause the at least one processor to carry out the steps of the method of controlling an intelligent walker according to any one of claims 1 to 8.

Technical Field

The embodiment of the application relates to the technical field of intelligent walking aids, in particular to a control method and device of an intelligent walking aid, the intelligent walking aid and a controller.

Background

With the progress of the times, a large number of intelligent walking aids for the old to ride instead of walk appear, such as electric wheelchairs, shopping walking aids and the like.

Wheelchairs are generally divided into two types, one type is an electric wheelchair needing to be pushed by nursing staff, the other type is an electric wheelchair which can be controlled by a user, a manual wheelchair user generally loses partial mobility of hands and feet, the electric wheelchair user can control the wheelchair through a rocker, and the electric wheelchair user is an old man and a disabled person who have normal hands and partial mobility of legs.

The shopping rollators generally have goods loading and walking assisting functions, are commonly used in developed countries such as European, American, Japanese and Korean, and users are old people or people with certain mobility on legs, and the shopping rollators need to be pushed by the users to walk.

The intelligent walking aid usually runs on a sidewalk, but because the construction of an unobstructed passage of most countries is delayed, a ridge with the height of 10-20 cm is often arranged between the sidewalk and a road and cannot cross, the traditional intelligent walking aid has poor trafficability, and is very inconvenient especially for the elderly or people with mobility inconvenience.

Disclosure of Invention

Based on the above, the invention provides a control method and device of an intelligent walking aid, the intelligent walking aid and a controller, so that the intelligent walking aid can intelligently judge whether the intelligent walking aid needs to enter an intelligent threshold-crossing mode, and in the intelligent threshold-crossing mode, the torque output value of a motor is reduced, and the situation that the vehicle body is out of control due to the fact that the torque is greatly increased due to the fact that the speed is too high when the threshold is crossed is avoided.

In a first aspect, the present application provides a control method of an intelligent walker, the intelligent walker comprises a vehicle body, front wheels and rear wheels, the rear wheels are driven by a motor, and the method comprises the following steps:

acquiring the moving speed of the intelligent walking aid;

acquiring the posture of the intelligent walking aid;

and when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is less than a first threshold value, reducing the torque output value of the motor.

Optionally, the posture indicates that the front end of the intelligent walker is inclined upwards when the intelligent walker meets at least one of the following conditions:

the inclination angle of the intelligent walking aid exceeds a preset second threshold value, and the inclination angle speed variation of the intelligent walking aid exceeds a preset third threshold value.

Optionally, after reducing the torque output value of the motor, the method further includes the following steps:

controlling the torque output value of the motor according to the upward inclination angle of the intelligent walking aid, wherein the larger the angle is, the larger the torque output value is.

Optionally, the method further comprises the following steps:

and when the upward inclination angle of the intelligent walking aid is larger than a preset maximum threshold value, reducing or stopping increasing the torque output value of the motor.

Optionally, the method further comprises the following steps:

recording the upward inclination angle of the intelligent walking aid as a first angle;

recording the angle of the intelligent walking aid before the intelligent walking aid tilts upwards as a second angle;

recording the maximum upward inclination angle of the intelligent walking aid as a third angle;

and when the first angle is larger than the second angle and the first angle is smaller than the third angle, increasing the torque output value of the motor.

Optionally, after increasing the torque output value of the motor, the method further includes the following steps:

when the upward inclination angle of the intelligent walking aid is smaller than the first angle and the upward inclination angle speed of the intelligent walking aid is zero, the torque output value of the motor is reduced.

Optionally, before reducing the torque output value of the motor, the method further includes the following steps:

and entering an intelligent threshold passing mode.

In a second aspect, embodiments of the present application provide a method of controlling an intelligent walker comprising a vehicle body, front wheels and rear wheels, the rear wheels being driven by a motor, the method comprising the steps of:

entering an intelligent threshold passing mode according to a preset trigger instruction;

acquiring the moving speed of the intelligent walking aid;

acquiring the posture of the intelligent walking aid;

when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is smaller than a first threshold value, controlling the torque output value of the motor according to the upwards inclining angle of the intelligent walking aid, wherein the larger the angle is, the larger the torque output value is.

In a third aspect, the present application provides a control device for an intelligent walker, the intelligent walker comprises a vehicle body, front wheels and rear wheels, the rear wheels are driven by a motor, the device comprises:

the first moving speed acquisition module is used for acquiring the moving speed of the intelligent walking aid;

the first posture acquisition module is used for acquiring the posture of the intelligent walking aid;

the first torque output module is used for reducing the torque output value of the motor when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is smaller than a first threshold value.

In a fourth aspect, the present application provides a control device for an intelligent walker, the intelligent walker comprises a vehicle body, front wheels and rear wheels, the rear wheels are driven by a motor, the device comprises:

the second mode switching module is used for entering an intelligent threshold passing mode according to a preset trigger instruction;

the second moving speed acquisition module is used for acquiring the moving speed of the intelligent walking aid;

the second posture acquisition module is used for acquiring the posture of the intelligent walking aid;

and the second torque output module is used for controlling the torque output value of the motor according to the upward inclination angle of the intelligent walking aid when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is less than a first threshold value, and the larger the angle is, the larger the torque output value is.

In a fifth aspect, an embodiment of the present application provides an intelligent walker, including:

at least one memory and at least one processor;

the memory for storing one or more programs;

when executed by the at least one processor, cause the at least one processor to implement the steps of the method of controlling an intelligent walker as described in the first and second aspects of the embodiments of the present application.

In a sixth aspect, an embodiment of the present application provides a controller, including:

at least one memory and at least one processor;

the memory for storing one or more programs;

when executed by the at least one processor, cause the at least one processor to implement the steps of the method of controlling an intelligent walker as described in the first and second aspects of the embodiments of the present application.

In the embodiment of the application, whether the intelligent walking aid needs to enter the intelligent threshold passing mode is intelligently judged by combining the upward inclined angle and the angular speed change of the vehicle body and the speed change of the vehicle body, and in the intelligent threshold passing mode, the torque output of the rear wheel motor is controlled according to the upward inclined angle of the vehicle body, so that the situation that the vehicle body is out of control due to the fact that the torque is greatly increased when the vehicle body passes through the threshold is avoided, the upward inclined angle change of the intelligent walking aid in the threshold passing process is recorded, when the situation that the front wheel passes through the threshold, the inclined angle is reduced and the angular speed is zero is detected, the situation that the rear wheel of the intelligent walking aid also passes through the threshold is determined, and therefore, the torque output of the motor is reduced, the intelligent walking aid cannot suddenly accelerate due to the large torque output of the motor in the threshold passing process after the threshold passes through the threshold, and the intelligent walking aid can pass through the threshold more smoothly, the safety of the intelligent walking aid is improved; meanwhile, whether the front wheel passes the threshold or not is intelligently judged by detecting that the angle is smaller than the maximum angle and the angular speed is zero in the process that the front wheel passes the threshold. In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Drawings

FIG. 1 is a schematic view of the structure of an intelligent walker according to the present invention;

FIG. 2 is a schematic view of a situation when the intelligent walker crosses the threshold according to the present invention;

FIG. 3 is a flow chart of a control method of an intelligent walker according to the present invention;

FIG. 4 is a flow chart of a control method of an intelligent walker according to the present invention;

FIGS. 5-8 are schematic views of a situation when the intelligent walker according to the present invention is over threshold;

FIG. 9 is a schematic structural diagram of a control device of an intelligent walker according to the present invention;

FIG. 10 is a schematic structural view of a control device of an intelligent walker according to the present invention;

reference numerals: 100-intelligent walker; 101-cushion; 102-a driven wheel; 1031-a first rear wheel; 1032-a second rear wheel; 104-horizontal arm rests; 105-intelligent front control device; 106-a first horizontal handle; 107-a second horizontal handle; 108-intelligent back control device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another similar human body, and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes an associative relationship with a human body, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the context of the associated human is an "or" relationship.

The intelligent walking aid of the embodiment of the present application can be specifically an electric wheelchair, a shopping walking aid cart, a trolley, etc., the intelligent walking aid has front wheels and rear wheels, and the rear wheels are driven by a motor, as shown in fig. 1, the intelligent walking aid is exemplified as a multifunctional walking aid, wherein the multifunctional walking aid can be used as an electric wheelchair, and can also be used as a shopping walking aid cart and a trolley to load articles.

As shown in FIG. 1, the intelligent walker 100 comprises a vehicle body having a seat cushion 101 for a person to sit or place items, a front end of the vehicle body having a front wheel, i.e. a driven wheel 102 without power output, and a rear end of the vehicle body having a first rear wheel 1031 and a second rear wheel 1032, wherein the first rear wheel 1031 and the second rear wheel 1032 are respectively driven by different motors. In some examples, the first rear wheel 1031 and the second rear wheel 1032 may also be driven by the same motor.

Preferably, the intelligent walking aid 100 can realize the front control operation realized by a passenger and the rear control operation realized by a pushing person, specifically, a horizontal armrest 104 (in a folded state in the figure) is arranged on the vehicle body, an intelligent front control device 105 is arranged at the front end of the armrest 104, and preferably, a rocker capable of swinging 360 degrees in the horizontal plane is arranged on the intelligent front control device 105, and a plurality of keys, a display screen and the like are further arranged for operating the multifunctional walking tool.

The rear side of the vehicle body is further provided with a first horizontal handle 106 and a second horizontal handle 107 which are used for being held by hands, the second horizontal handle 107 is provided with an intelligent rear control device 108, preferably, the intelligent rear control device 108 is composed of a liquid crystal screen, a constant-speed finger support, a sign sensing module, keys, an attitude sensing device, an intelligent rear control support and an intelligent rear control, wherein the keys comprise a switch key, a direction switching key and a power-assisted level switching key, the speed, the gear, the residual electric quantity and the multifunctional display are displayed on the liquid crystal screen, the constant-speed finger support can control the vehicle to run at a set gear speed in a constant speed in the touch process, and the intelligent rear control is fixed at the front end of the second horizontal handle through the intelligent rear control support.

In the embodiment of the application, the intelligent walking aid can be operated by the intelligent front control device 105 or the intelligent rear control device 108, and the intelligent front control device 105 or the intelligent rear control device 108 respectively has a control chip for realizing the intelligent control of the intelligent walking aid. In conventional examples, the intelligent walker includes a normal mode and a constant speed power assist mode. In the constant-speed power assisting process, different speed gears can be set through the intelligent front control device 105 or the intelligent rear control device 108, when a certain speed gear is selected, the intelligent walking aid enters a constant-speed mode, and the vehicle body runs at a constant speed to achieve the power assisting effect.

In some examples, the intelligent walker may automatically enter the constant speed power-assisted mode after some preset judgment mode, or may enter the constant speed power-assisted mode through manual operation, for example, by touching a constant speed finger rest on the intelligent rear control device 108.

The principle of the constant-speed boosting mode is that the current speed is collected according to the set speed, and the torque output by the rear wheel motor is controlled through feedback, so that the moving speed of the intelligent walking aid is equal to the set speed.

The manual wheelchair cannot lift the front wheel due to heavy load, and no way is available for realizing threshold crossing. When the intelligent walking aid with the constant-speed assistance mode encounters a threshold-crossing scene as shown in fig. 2, the control process is as follows: the nursing staff holds the first horizontal handle 106 and the second horizontal handle 107 by hands, the motor detects that the moving speed is reduced, so that the torque output is increased, the front wheel is lifted, but the moving speed of the motor is reduced or even zero at the moment, and a feedback control program for realizing the motor torque control can continuously increase the torque output of the motor, so that the intelligent walking aid is in danger of overturning or being out of control.

Aiming at the technical problem, the invention provides a control method of an intelligent walking aid, which can enable the intelligent walking aid to smoothly and smoothly realize the threshold passing function. The control method may be implemented by the intelligent front control device 105 or the intelligent rear control device 108 in fig. 1. In other examples, the control method may also be applied to any intelligent walker having front wheels and motorized rear wheels.

The sill in the embodiment of the present application, as shown in fig. 2, is a naturally formed or artificially constructed step-like shape on an originally horizontal road surface or a road surface with a certain slope, and the road surface above the step is higher than the road surface above and below the step.

In a specific example, the threshold may be a sidewalk that rises from a highway to a height that is one step higher than the highway.

In a specific example, as shown in fig. 3, the automatic threshold-crossing mode execution includes the following steps:

s301: acquiring the moving speed of the intelligent walking aid;

s302: acquiring the posture of the intelligent walking aid;

s303: and when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is less than a first threshold value, reducing the torque output value of the motor.

Wherein the posture of the intelligent walker is used for representing the motion posture of the intelligent walker, and is generally detected by a posture sensor. The attitude sensor usually comprises auxiliary motion sensors such as a three-axis gyroscope, a three-axis accelerometer, a three-axis electronic compass and the like, outputs calibrated angular velocity, acceleration and the like through an embedded low-power-consumption ARM processor, measures the motion attitude through a sensor data algorithm based on quaternion, and outputs zero-drift three-dimensional attitude data expressed by quaternion, Euler angle and the like in real time.

In some examples, an attitude detection module is further installed on the vehicle body of fig. 1, and is configured to detect an angle change and an angular velocity change of the vehicle body, and send an angle value and an angular velocity value to the intelligent front control device 105 or the intelligent rear control device 108, respectively.

In one particular example, the pose indicates that the front end of the intelligent walker is leaning upward when the intelligent walker meets at least one of the following conditions:

the inclination angle of the intelligent walking aid exceeds a preset second threshold value, and the inclination angle speed variation of the intelligent walking aid exceeds a preset third threshold value.

The first threshold, the second threshold and the third threshold are thresholds preset in the intelligent front control device 105 or the intelligent rear control device 108 in fig. 1.

In the above example, since the constant-speed boosting mode may cause the torque output of the motor to be too large during the lifting process of the front wheel of the upper threshold, the torque output value of the motor is reduced at the first time after the front end of the intelligent walker is detected to be tilted upwards, so as to avoid the risk of the intelligent walker overturning. In a preferred example, the intelligent walking aid does not randomly or quantitatively reduce the torque output value of the motor, but switches the torque control mode of the motor, and controls the torque output value of the motor according to the upward inclined angle of the intelligent walking aid, wherein the larger the angle is, the larger the torque output value is.

That is, after the front end of the intelligent walking aid is detected to tilt upwards, the torque control mode of the motor is controlled according to the moving speed of the intelligent walking aid, and is switched to be controlled according to the upwards-lifted angle of the intelligent walking aid, and the torque output of the motor is reduced to the torque output value corresponding to the current upwards-lifted angle of the intelligent walking aid.

Preferably, before reducing the torque output value of the motor, the method further comprises the following steps:

and entering an intelligent threshold passing mode.

That is, the intelligent walking aid is provided with an intelligent threshold passing mode independently to realize the steps of the control method for controlling the torque output value of the motor by the intelligent walking aid according to the upward inclination angle of the intelligent walking aid.

In the above example, the intelligent walking aid is judged whether to pass the threshold or not by combining the angle, the angular velocity and the moving speed, so as to automatically trigger the intelligent walking aid to enter the intelligent threshold passing mode.

In this regard, in one embodiment, as shown in FIG. 4, a method of controlling an intelligent walker comprises the steps of:

s401: entering an intelligent threshold passing mode according to a preset trigger instruction;

s402: acquiring the moving speed of the intelligent walking aid;

s403: acquiring the posture of the intelligent walking aid;

s404: when the posture indicates that the front end of the intelligent walking aid inclines upwards and the moving speed of the intelligent walking aid is smaller than a first threshold value, controlling the torque output value of the motor according to the upwards inclining angle of the intelligent walking aid, wherein the larger the angle is, the larger the torque output value is.

For some cases of the steps being too high, so that the risk of overturning due to too large inclination angle can occur if the intelligent walking aid is too limited, in one embodiment, the method further comprises the following steps:

when the upward inclination angle of the intelligent walking aid is larger than a preset maximum threshold value, the torque output value of the motor is reduced or stopped to be increased, and a user can choose to abandon the threshold.

In a preferred example, the embodiment of the present application further automatically determines whether the front wheel of the intelligent walker is cut, and specifically, further includes the following steps:

recording the upward inclination angle of the intelligent walking aid as a first angle;

recording the angle of the intelligent walking aid before the intelligent walking aid tilts upwards as a second angle;

recording the maximum upward inclination angle of the intelligent walking aid as a third angle;

and when the first angle is larger than the second angle and smaller than the third angle, increasing the torque output value of the motor to enable the rear wheel to move forwards.

When the front wheels of the intelligent walking aid pass through the threshold, the front wheels usually rise to a height slightly higher than the height of the step in the rising process and then fall onto the step, so that the maximum angle of the intelligent walking aid inclining upwards is recorded, if the current angle is smaller than the maximum angle and larger than the angle before the upwards inclining, the situation that the intelligent walking aid is in a stage that the front wheels pass through the threshold can be judged, the rear wheels move towards the threshold positively, or the rear wheels lift up, the torque output value of the motor can be increased, and the rear wheels can move towards the step or lift up more powerfully.

In other examples, when the current angle of the intelligent walking aid inclining upwards is smaller than the maximum angle and the angular speed of the intelligent walking aid is zero, whether the vehicle body has the forward moving speed or not can be judged to assist in judging whether the front wheels have finished passing the threshold or not.

After intelligently judging that the front wheel has passed the threshold, in a preferred example, the embodiment of the present application further intelligently judges whether the rear wheel has passed the threshold, specifically, after judging that the front wheel has passed the threshold and increasing the torque output value of the motor, the method further includes the following steps:

when the upward inclination angle of the intelligent walking aid is smaller than the first angle and the upward inclination angle speed of the intelligent walking aid is zero, the torque output value of the motor is reduced.

As shown in FIGS. 5-8, in connection with the example of the intelligent walker in FIG. 1, in a specific example, the control method of the intelligent walker according to the embodiment of the present application, when the user pushes the intelligent walker to the front of the threshold in the constant-speed boosting mode, the control board in the intelligent rear control device 108 or the intelligent front control device 105 of the intelligent walker performs the following steps:

s501: when the user pulls the first horizontal handle 106 and the second horizontal handle 107 with the hands, the front wheels of the intelligent walker 100 are lifted upwards, the moving speed of the intelligent walker 100 is obtained, and the posture of the intelligent walker 100 is obtained by judging that the inclination angle of the intelligent walker 100 exceeds a preset second threshold value and/or judging that the change amount of the inclination angle speed of the intelligent walker 100 exceeds a preset third threshold value.

S502: as shown in FIG. 5, if the posture indicates that the front end of the intelligent walker 100 is tilted upwards and the moving speed of the intelligent walker 100 is less than the first threshold, the torque output of the motor is reduced and the intelligent threshold passing mode is automatically entered.

S503: in the process of turning on the front wheels of fig. 5, the torque output value of the motor is controlled according to the upward inclination angle of the intelligent walking aid 100, and the larger the angle is, the larger the torque output value is.

S504: it is determined whether the upward angle of inclination of the intelligent walker 100 is greater than a preset maximum threshold.

S505: if yes, the torque output value of the motor is reduced or stopped increasing, and if not, the torque output value of the motor is continuously controlled according to the angle.

S506: judging whether the front wheels pass through the threshold and fall to the ground, specifically, recording the upward inclination angle of the intelligent walking aid 100 as a first angle; recording the angle of the intelligent walker 100 before the intelligent walker tilts upwards as a second angle; recording a maximum angle of upward tilt of the intelligent walker 100 as a third angle; when the first angle is larger than the second angle and the first angle is smaller than the third angle, if yes, it is determined that the front wheel has passed the threshold, and the current state of the vehicle body is as shown in fig. 7.

S507: the torque output value of the motor is increased so that the rear wheels move forward.

S508: and judging whether the upward inclination angle of the intelligent walking aid 100 is smaller than the first angle or not and whether the upward inclination angle speed of the intelligent walking aid 100 is zero or not.

S509: if yes, the rear wheel is judged to be over-threshold, the current state of the vehicle body is shown in fig. 8, the torque output of the motor is rapidly reduced, and the intelligent walking aid 100 is prevented from having forward impact force.

In the embodiment of the application, the moving speed of the rear wheel is adjusted by adjusting the torque output of the rear wheel motor. When the number of the rear wheels is multiple and each rear wheel is controlled by a separate motor, the control of the moving speed of all the rear wheels can be realized by uniformly adjusting the torque output of all the motors. When the rear wheels are multiple and controlled by the same motor, the moving speed of the rear wheels is controlled by controlling the torque output of the motor.

The front wheel is automatically judged to be cut down, or the front wheel is manually sent to the controller of the intelligent walking aid, for example, in the example of fig. 1, the front wheel is judged to be cut down by sending an instruction to the intelligent front control device 105 or the intelligent rear control device 108, and the instruction can be sent by a button arranged on the intelligent front control device 105 or the intelligent rear control device 108.

In the embodiment of the application, whether the intelligent walking aid needs to enter the intelligent threshold passing mode is intelligently judged by combining the upward inclined angle and the angular speed change of the vehicle body and the speed change of the vehicle body, and in the intelligent threshold passing mode, the torque output of the rear wheel motor is controlled according to the upward inclined angle of the vehicle body, so that the situation that the vehicle body is out of control due to the fact that the torque is greatly increased when the vehicle body passes through the threshold is avoided, the upward inclined angle change of the intelligent walking aid in the threshold passing process is recorded, when the situation that the front wheel passes through the threshold, the inclined angle is reduced and the angular speed is zero is detected, the situation that the rear wheel of the intelligent walking aid also passes through the threshold is determined, and therefore, the torque output of the motor is reduced, the intelligent walking aid cannot suddenly accelerate due to the large torque output of the motor in the threshold passing process after the threshold passes through the threshold, and the intelligent walking aid can pass through the threshold more smoothly, the safety of the intelligent walking aid is improved; meanwhile, whether the front wheel passes the threshold or not is intelligently judged by detecting that the angle is smaller than the maximum angle and the angular speed is zero in the process that the front wheel passes the threshold.

As shown in FIG. 9, corresponding to the above-mentioned control method of the intelligent walker, the present application further provides a control device 900 of the intelligent walker, which comprises:

a first moving speed obtaining module 901, configured to obtain a moving speed of the intelligent walker;

a first posture acquisition module 902 for acquiring the posture of the intelligent walker;

a first torque output module 903, configured to decrease the torque output value of the motor when the posture indicates that the front end of the intelligent walker tilts upwards and the moving speed of the intelligent walker is less than a first threshold.

In an exemplary embodiment, the pose indicates that the front end of the intelligent walker is tilted upward when the intelligent walker meets at least one of the following conditions:

the inclination angle of the intelligent walking aid exceeds a preset second threshold value, and the inclination angle speed variation of the intelligent walking aid exceeds a preset third threshold value.

In an exemplary embodiment, the apparatus further comprises:

and the second torque output module is used for controlling the torque output value of the motor according to the upward inclined angle of the intelligent walking aid after the torque output value of the motor is reduced, and the larger the angle is, the larger the torque output value is.

In an exemplary embodiment, the apparatus further comprises:

and the inclination protection module is used for reducing or stopping increasing the torque output value of the motor when the upward inclination angle of the intelligent walking aid is larger than a preset maximum threshold value.

In an exemplary embodiment, the apparatus further comprises:

the first angle recording module is used for recording the upward inclination angle of the intelligent walking aid as a first angle;

the second angle recording module is used for recording the angle of the intelligent walking aid before the intelligent walking aid tilts upwards as a second angle;

the third angle recording module is used for recording the maximum upward inclination angle of the intelligent walking aid as a third angle;

and the third torque output module is used for increasing the torque output value of the motor when the first angle is larger than the second angle and the first angle is smaller than the third angle.

As shown in FIG. 10, corresponding to the above-mentioned control method of the intelligent walker, the present application further provides a control device 1000 of the intelligent walker, which comprises:

a second threshold passing mode entering module 1001, configured to enter an intelligent threshold passing mode according to a preset trigger instruction;

a second moving speed obtaining module 1002, configured to obtain a moving speed of the intelligent walker;

a second posture acquiring module 1003, configured to acquire a posture of the intelligent walking aid;

a fourth torque output module 1004, configured to control a torque output value of the motor according to an upward tilting angle of the intelligent walker when the posture indicates that the front end of the intelligent walker tilts upward and the moving speed of the intelligent walker is less than a first threshold, where the larger the angle, the larger the torque output value.

Corresponding to the control method of the intelligent walking aid, the embodiment of the application also provides an intelligent walking aid, which comprises the following steps:

at least one memory and at least one processor;

the memory for storing one or more programs;

when executed by the at least one processor, cause the at least one processor to implement the steps of the method of controlling an intelligent walker as in any one of the embodiments described above.

Corresponding to the control method of the intelligent walking aid, the embodiment of the application also provides a controller, which comprises:

at least one memory and at least one processor;

the memory for storing one or more programs;

when executed by the at least one processor, cause the at least one processor to implement the steps of the method of controlling an intelligent walker as in any one of the embodiments described above.

It is to be understood that the embodiments of the present application are not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the following claims.

The above-mentioned embodiments only express a few embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the concept of the embodiments of the present application, and these embodiments are within the scope of the present application.