CN113029189A - Wearable device and motion detection method - Google Patents
Wearable device and motion detection method Download PDFInfo
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- CN113029189A CN113029189A CN202110240140.6A CN202110240140A CN113029189A CN 113029189 A CN113029189 A CN 113029189A CN 202110240140 A CN202110240140 A CN 202110240140A CN 113029189 A CN113029189 A CN 113029189A
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- 230000033001 locomotion Effects 0.000 title claims abstract description 112
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 210000003127 knee Anatomy 0.000 claims abstract description 117
- 230000006698 induction Effects 0.000 claims abstract description 87
- 238000004891 communication Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims 1
- 230000006870 function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
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- 210000000707 wrist Anatomy 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
- G01C22/006—Pedometers
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/06—Knee or foot
- A41D13/065—Knee protectors
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Abstract
The embodiment of the application discloses wearing equipment and a motion detection method, which comprise a first knee pad and a second knee pad; a processor and a magnetic field sensor are arranged on the first kneepad; a magnetic component is arranged on the second kneepad; the magnetic component and the magnetic field sensor have magnetic field induction, when the magnetic component is close to the magnetic field sensor, the magnetic field sensor can generate a stronger magnetic field, and when the magnetic field intensity induced by the magnetic component is large enough, an output induction signal is in a low level; when the magnetic component is far away from the magnetic field sensor, the magnetic field intensity generated by the magnetic field sensor is weakened, so that the output induction signal is in a high level. The processor is connected with the magnetic field sensor and can receive the induction signals transmitted by the magnetic field sensor and calculate the movement steps according to the level distribution of the induction signals. The step counting function is added on the basis of the original knee-pad sports protection product, so that the pedometer products in the forms of wristbands, wristwatches and the like are not needed to be independently used, and the use experience of the user on the wearing equipment is greatly improved.
Description
Technical Field
The application relates to the technical field of intelligent electronic equipment, in particular to wearable equipment and a motion detection method.
Background
In the current life, the knee part is a key part needing to be protected intensively, no matter daily activities or sports training. Knee pads are important in modern sports, as the knee is both an extremely important part of the sport and a fragile and easily injured part.
The kneepad is a wearing device for protecting the knees of people, and almost all sports goods stores can buy kneepad products made of thick felt materials, so that the knees can be prevented from being injured to a certain extent. However, the function of the existing knee pad product is often single, and if the actual application requirements can be combined, functions meeting the requirements of users are added to the original knee pad product, so that the use experience of the users on the knee pad product can be greatly improved.
Therefore, how to perfect the function of the wearable device is a problem to be solved by the technical personnel in the field.
Disclosure of Invention
The embodiment of the application aims to provide a wearable device and a motion detection method, which can improve the functions of the wearable device.
In order to solve the above technical problem, an embodiment of the present application provides a wearing apparatus, including a first knee pad and a second knee pad; a processor and a magnetic field sensor are arranged on the first knee pad; a magnetic component is arranged on the second knee pad; the magnetic component has magnetic field induction with the magnetic field sensor;
the processor is connected with the magnetic field sensor and used for receiving the induction signals transmitted by the magnetic field sensor and calculating the movement steps according to the level distribution of the induction signals.
Optionally, the first protecting laptop is further provided with a magnetic component and a wireless communication component; the second laptop protection part is also provided with a magnetic field sensor and a wireless communication part; the magnetic field sensor on the second kneepad and the magnetic component on the first kneepad have magnetic field induction;
a magnetic field sensor on the second kneepad collects a second induction signal, and the collected second induction signal is transmitted to a processor of the first kneepad through the wireless communication component;
the processor is used for calculating a second movement step number according to the level distribution of the second induction signal; and taking the minimum value of the motion step number and the second motion step number as the actual motion step number.
Optionally, the processor is further configured to transmit the actual exercise step number to a terminal device through the wireless communication component.
Optionally, the processor is further configured to calculate a time interval of the number of moving steps according to a time distribution of the level change of the sensing signal; and calculating the movement speed according to the time interval and the movement steps.
Optionally, the magnetic component is disposed on top of the knee position of the second knee pad.
Optionally, when the first knee pad is a left knee pad, the magnetic field sensor is disposed on the right side of the knee position of the first knee pad; when the first knee pad is a right knee pad, the magnetic field sensor is arranged on the left side face of the knee position of the first knee pad.
Optionally, the magnetic field sensor is a hall sensor.
Optionally, when the magnetic field sensor is a unipolar hall sensor, the first magnetic pole of the magnetic component on the second knee pad is directed to the outside of the second knee pad; directing the second pole of the magnetic component on the first knee pad toward the outside of the first knee pad; wherein the first magnetic pole is a magnetic pole which has magnetic field induction with the magnetic field sensor on the first knee pad; the second magnetic pole is a magnetic pole which is induced by a magnetic field with the magnetic field sensor on the second knee pad.
Optionally, when the magnetic field sensor is a bipolar hall sensor, the processor is configured to subtract the sensing signal from a pre-stored interference signal to obtain a first target sensing signal; calculating the number of movement steps according to the level distribution of the first target sensing signal; subtracting the interference signal from the second sensing signal to obtain a second target sensing signal; and calculating a second movement step number according to the level distribution of the second target sensing signal.
Optionally, the magnetic component is a magnet.
The embodiment of the present application further provides a motion detection method, including:
acquiring an induction signal transmitted by a magnetic field sensor; wherein the induction signal is generated by the induction of a magnetic field between the magnetic field sensor on the first kneepad and the magnetic component on the second kneepad;
and calculating the number of the movement steps according to the level distribution of the induction signals.
Optionally, the method further comprises:
calculating a second movement step number according to the level distribution of the second induction signal; wherein the second induction signal is an induction signal generated by induction of a magnetic field between the magnetic field sensor on the second knee pad and the magnetic component on the first knee pad;
and taking the minimum value of the motion step number and the second motion step number as the actual motion step number.
Optionally, after the taking the minimum value of the motion step number and the second motion step number as the actual motion step number, the method further includes:
and transmitting the actual motion step number to the terminal equipment.
Optionally, when the magnetic field sensor is a bipolar hall sensor, correspondingly, the calculating the number of movement steps according to the level distribution of the sensing signal includes:
subtracting the induction signal from a prestored interference signal to obtain a first target induction signal; calculating the number of movement steps according to the level distribution of the first target sensing signal;
the calculating the second motion step number according to the level distribution of the second sensing signal comprises:
subtracting the interference signal from the second sensing signal to obtain a second target sensing signal; and calculating a second movement step number according to the level distribution of the second target sensing signal.
Optionally, after the acquiring the induction signal transmitted by the magnetic field sensor, the method further includes:
calculating the time interval of the motion steps according to the time distribution of the level change of the induction signal;
and calculating the movement speed according to the time interval and the movement steps.
According to the technical scheme, the wearing equipment comprises a first knee pad and a second knee pad; a processor and a magnetic field sensor are arranged on the first kneepad; a magnetic component is arranged on the second kneepad; the magnetic component and the magnetic field sensor have magnetic field induction, when the magnetic component is close to the magnetic field sensor, the magnetic field sensor can generate a stronger magnetic field, and when the magnetic field intensity induced by the magnetic component is large enough, an output induction signal is in a low level; when the magnetic component is far away from the magnetic field sensor, the magnetic field intensity generated by the magnetic field sensor is weakened, so that the output induction signal is in a high level. The processor is connected with the magnetic field sensor and can receive the induction signals transmitted by the magnetic field sensor and calculate the movement steps according to the level distribution of the induction signals. The application provides a wearing equipment can protect the knee in the motion process itself to compromise the record motion data simultaneously. Increase the meter step function on original knee-pad class motion protection product basis, needn't use the meter step ware products of forms such as wrist strap, watch alone, have more wearing convenience, perfect wearing equipment's function, very big improvement the user experience to wearing equipment's use.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a wearable device provided in an embodiment of the present application;
fig. 2 is a schematic level distribution diagram of an induction signal acquired by a magnetic field sensor according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a wearing device provided in an embodiment of the present application, in which two kneepads detect sensing signals independently;
fig. 4 is a flowchart of a motion detection method according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the 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 present application.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Next, a wearable device provided in an embodiment of the present application is described in detail. Fig. 1 is a schematic structural diagram of a wearing apparatus provided in an embodiment of the present application, and includes a first knee pad 1 and a second knee pad 2; a processor 11 and a magnetic field sensor 12 are arranged on the first kneepad 1; a magnetic member 13 is provided on the second knee pad 2. The magnetic member 13 has magnetic field induction with the magnetic field sensor 12.
In practical applications, the magnetic field sensor 12 may be a hall sensor. The magnetic member 13 may be a magnet. The Magnetitum has effects of promoting blood circulation, improving microcirculation, promoting cell metabolism, and promoting health.
In the present embodiment, the first knee pad 1 and the second knee pad 2 refer to a left knee pad and a right knee pad used by the user. When the first kneepad 1 is a left kneepad, correspondingly, the second kneepad 2 is a right kneepad; when the first kneepad 1 is a right kneepad, correspondingly, the second kneepad 2 is a left kneepad.
By arranging the magnetic field sensor 12 on one knee pad and the magnetic component 13 on the other knee pad, the distance between the magnetic field sensor 12 and the magnetic component 13 changes nearly periodically when the user wears the first knee pad 1 and the second knee pad 2 and moves. When the magnetic component is close to the magnetic field sensor, the magnetic field sensor can generate a stronger magnetic field, and when the magnetic field intensity sensed by the magnetic component is large enough, the output sensing signal is in a low level; when the magnetic component is far away from the magnetic field sensor, the magnetic field intensity generated by the magnetic field sensor is weakened, so that the output induction signal is in a high level.
Therefore, in the embodiment of the present application, the processor 11 is connected to the magnetic field sensor 12, and can receive the sensing signal transmitted by the magnetic field sensor 12, and calculate the number of movement steps according to the level distribution of the sensing signal.
When a user wears the first knee pad 1 and the second knee pad 2 to move, a schematic diagram of the level distribution of the sensing signals collected by the magnetic field sensor 12 is shown in fig. 2, it can be seen from fig. 2 that the sensing signals are distributed in a manner of periodically switching between a high level and a low level, reference numerals 1, 2 … corresponding to the low level in fig. 2 indicate the number of times of occurrence of the low level, and the total number of times of occurrence of the low level can be regarded as the number of movement steps of the user.
In this embodiment, the processor 11 may further calculate a time interval of the number of motion steps according to the time distribution of the level change of the sensing signal; and calculating the movement speed according to the time interval and the movement steps.
In conjunction with the schematic diagram shown in fig. 2, t1 in fig. 2 represents the time interval from the start time of the first low-level signal to the start time of the second low-level signal, t2 represents the time interval from the start time of the first low-level signal to the start time of the third low-level signal, and so on, and tm represents the time interval from the start time of the first low-level signal to the start time of the m +1 th low-level signal.
Considering practical application, the step distance of the user under different types of exercise such as running, fast walking and slow walking can be different, and the step distance refers to a distance value for the user to take a step. Taking running, fast walking and slow walking as examples, according to the order of running, fast walking and slow walking, the step interval will decrease in turn, and the time interval will increase in turn, therefore in this application embodiment, establish the corresponding relation list of time interval and step interval in advance. In practical applications, the processor 11 may use the time interval between two adjacent low levels or two adjacent high levels as a time reference value, and search the corresponding relationship list for a step distance matching the time reference value. The product value of the step distance and the number of the motion steps is the motion distance value of the user, and the motion speed of the user can be obtained by dividing the motion distance value by the motion time. The movement speed reflects the type of movement of the user.
In fig. 1, a magnetic field sensor 12 is provided on a first knee pad 1, and a magnetic member 13 is provided on a second knee pad 2. In practical applications, the magnetic field sensor 12 and the magnetic component 13 may be provided on both of the knee guards at the same time. In order to analyze the sensing signals collected by the magnetic field sensors 12 on the two knee pads, a processor 11 can be arranged on each knee pad; it is also possible to provide the processor 11 on only one knee pad, both knee pads enabling the transmission of information via the wireless communication means 14.
Fig. 3 is a schematic structural diagram of a wearing device provided in an embodiment of the present application, in which two kneepads detect sensing signals independently, and fig. 3 illustrates an example in which a processor 11 is disposed on only a first kneepad 1, and a magnetic component 13 and a wireless communication component 14 are further disposed on the first kneepad 1; the second knee brace 2 is also provided with a magnetic field sensor 12 and a wireless communication component 14.
The magnetic field sensor 12 on the second kneepad 2 and the magnetic component 13 on the first kneepad 1 have magnetic field induction; the magnetic field sensor 12 on the second kneepad 2 transmits the collected second sensing signal to the processor 11 of the first kneepad 1 through the wireless communication component 14. The processor 11 may calculate a second motion step number according to the level distribution of the second sensing signal; and taking the minimum value of the motion step number and the second motion step number as the actual motion step number.
In the embodiment of the present application, the processor 11 may transmit the actual number of steps of the exercise to the terminal device through the wireless communication section 14. The wireless communication section 14 may employ a bluetooth module. After calculating the movement speed reflecting the type of movement of the user, the movement speed may also be transmitted to the terminal device through the wireless communication section 14.
In consideration of practical application, the magnetic field sensor may be influenced by external magnetic factors, so that the acquired sensing signals have deviation, and the calculated movement steps are not accurate enough. According to the method, the magnetic field sensors and the magnetic parts are arranged on the two protecting laptop sides, so that two movement steps can be calculated according to induction signals collected by the two magnetic field sensors, the two movement steps are compared, the minimum value of the two movement steps is selected as the actual movement step, the step counting precision can be effectively improved, and errors are reduced.
In practical applications, taking the second knee pad 2 as an example, the magnetic member 13 may be disposed on top of the knee position of the second knee pad 2, taking into account the functional characteristics of the magnetic field sensor 12 and the magnetic member 13. When the first knee pad 1 is a left knee pad, the magnetic field sensor 12 is disposed on the right side of the knee position of the first knee pad 1, that is, at a position close to the inner side of the knee of the user; when the first knee pad 1 is a right knee pad, the magnetic field sensor 12 is disposed on the left side of the knee position of the first knee pad 1, that is, at a position close to the inner side of the knee of the user.
Taking the magnetic field sensor 12 as an example of a hall sensor, there are various types of hall sensors, including a unipolar hall sensor and a bipolar hall sensor. The magnetic member 13 has an N pole and an S pole.
The unipolar hall sensor generates magnetic field induction only with the S pole or the N pole of the magnetic component 13, so that, in the embodiment of the present application, when the magnetic field sensor 12 is a unipolar hall sensor, the first magnetic pole of the magnetic component 13 on the second knee pad 2, which has magnetic field induction with the magnetic field sensor 12 on the first knee pad 1, may be directed to the outside of the second knee pad 2, and at this time, the magnetic field sensor 12 on the first knee pad 1 may generate magnetic field induction with the magnetic component 13 on the second knee pad 2, thereby generating an induction signal. The second magnetic pole of the magnetic component 13 on the first knee pad 1 is directed to the outer side of the first knee pad 1; the second magnetic pole is a magnetic pole which has magnetic field induction with the magnetic field sensor 12 on the second knee pad 2, and at this time, the magnetic field sensor 12 on the second knee pad 2 can generate magnetic field induction with the magnetic component 13 on the first knee pad 1, so that an induction signal is generated.
When the magnetic field sensor 12 is a bipolar hall sensor, taking the case that the magnetic field sensor 12 and the magnetic component 13 are both arranged on two knee pads as an example, the magnetic sensor 12 on the first knee pad 1 can generate magnetic field induction with the magnetic component 13 arranged on the first knee pad 1, and can also generate magnetic field induction with the magnetic component 13 arranged on the second knee pad 2. Similarly, the magnetic sensor 12 on the second knee pad 2 can generate magnetic field induction with the magnetic component 13 on the second knee pad 2, and can also generate magnetic field induction with the magnetic component 13 on the first knee pad 1.
Considering that the positions of magnetic sensor 12 on first knee pad 1 and magnetic component 13 on first knee pad 1 are relatively fixed, the induced signal generated by magnetic sensor 12 on first knee pad 1 and magnetic component 13 on first knee pad 1 is relatively fixed, and therefore, in the embodiment of the present application, the induced signal can be stored as an interference signal in advance in processor 11.
Accordingly, the processor 11 may subtract the sensing signal from the pre-stored interference signal to obtain a first target sensing signal; calculating the number of movement steps according to the level distribution of the first target sensing signal; subtracting the interference signal from the second sensing signal to obtain a second target sensing signal; and calculating a second motion step number according to the level distribution of the second target sensing signal.
According to the technical scheme, the wearing equipment comprises a first knee pad and a second knee pad; a processor and a magnetic field sensor are arranged on the first kneepad; a magnetic component is arranged on the second kneepad; the magnetic component and the magnetic field sensor have magnetic field induction, when the magnetic component is close to the magnetic field sensor, the magnetic field sensor can generate a stronger magnetic field, and when the magnetic field intensity induced by the magnetic component is large enough, an output induction signal is in a low level; when the magnetic component is far away from the magnetic field sensor, the magnetic field intensity generated by the magnetic field sensor is weakened, so that the output induction signal is in a high level. The processor is connected with the magnetic field sensor and can receive the induction signals transmitted by the magnetic field sensor and calculate the movement steps according to the level distribution of the induction signals. The application provides a wearing equipment can protect the knee in the motion process itself to compromise the record motion data simultaneously. Increase the meter step function on original knee-pad class motion protection product basis, needn't use the meter step ware products of forms such as wrist strap, watch alone, have more wearing convenience, perfect wearing equipment's function, very big improvement the user experience to wearing equipment's use.
Fig. 4 is a flowchart of a motion detection method according to an embodiment of the present application, including:
s401: and acquiring an induction signal transmitted by the magnetic field sensor.
The induction signal is generated by the induction of a magnetic field between the magnetic field sensor on the first kneepad and the magnetic component on the second kneepad;
s402: and calculating the motion steps according to the level distribution of the induction signals.
Optionally, the method further comprises:
calculating a second movement step number according to the level distribution of the second induction signal; the second induction signal is generated by induction of a magnetic field between the magnetic field sensor on the second kneepad and the magnetic component on the first kneepad;
and taking the minimum value of the motion step number and the second motion step number as the actual motion step number.
Optionally, after taking the minimum value of the motion step number and the second motion step number as the actual motion step number, the method further includes:
and transmitting the actual motion step number to the terminal equipment.
Alternatively, when the magnetic field sensor is a bipolar hall sensor, calculating the number of movement steps according to the level distribution of the sensing signal includes:
subtracting the induction signal from a prestored interference signal to obtain a first target induction signal; calculating the number of movement steps according to the level distribution of the first target sensing signal;
calculating the second motion step number according to the level distribution of the second sensing signal comprises:
subtracting the interference signal from the second sensing signal to obtain a second target sensing signal; and calculating a second motion step number according to the level distribution of the second target sensing signal.
Optionally, after acquiring the induction signal transmitted by the magnetic field sensor, the method further includes:
calculating the time interval of the motion steps according to the time distribution of the level change of the induction signal;
and calculating the movement speed according to the time interval and the movement steps.
According to the technical scheme, the induction signal transmitted by the magnetic field sensor is acquired. The induction signal is generated by induction of a magnetic field between the magnetic field sensor on the first knee pad and the magnetic component on the second knee pad. When the magnetic component is close to the magnetic field sensor, the magnetic field sensor can generate a stronger magnetic field, and when the magnetic field intensity sensed by the magnetic component is large enough, the output sensing signal is in a low level; when the magnetic component is far away from the magnetic field sensor, the magnetic field intensity generated by the magnetic field sensor is weakened, so that the output induction signal is in a high level. The processor calculates the number of the movement steps according to the level distribution of the induction signals. The detection of the motion data is realized by means of magnetic field induction.
A wearable device and a motion detection method provided by the embodiments of the present application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Claims (10)
1. A wearing apparatus comprising a first knee pad and a second knee pad; a processor and a magnetic field sensor are arranged on the first knee pad; a magnetic component is arranged on the second knee pad; the magnetic component has magnetic field induction with the magnetic field sensor;
the processor is connected with the magnetic field sensor and used for receiving the induction signals transmitted by the magnetic field sensor and calculating the movement steps according to the level distribution of the induction signals.
2. The wearable device of claim 1, wherein the first protective lap is further provided with a magnetic component and a wireless communication component; the second laptop protection part is also provided with a magnetic field sensor and a wireless communication part; the magnetic field sensor on the second kneepad and the magnetic component on the first kneepad have magnetic field induction;
a magnetic field sensor on the second kneepad collects a second induction signal, and the collected second induction signal is transmitted to a processor of the first kneepad through the wireless communication component;
the processor is used for calculating a second movement step number according to the level distribution of the second induction signal; and taking the minimum value of the motion step number and the second motion step number as the actual motion step number.
3. The wearing apparatus according to claim 1, wherein the magnetic member is provided on top of a knee position of the second knee pad.
4. The wearing apparatus according to claim 1, wherein when the first knee pad is a left knee pad, the magnetic field sensor is provided on a right side face of a knee position of the first knee pad; when the first knee pad is a right knee pad, the magnetic field sensor is arranged on the left side face of the knee position of the first knee pad.
5. The wearing apparatus according to claim 2, wherein when the magnetic field sensor is a unipolar hall sensor, the first magnetic pole of the magnetic component on the second knee pad is directed to the outside of the second knee pad; directing the second pole of the magnetic component on the first knee pad toward the outside of the first knee pad; wherein the first magnetic pole is a magnetic pole which has magnetic field induction with the magnetic field sensor on the first knee pad; the second magnetic pole is a magnetic pole which is induced by a magnetic field with the magnetic field sensor on the second knee pad.
6. A motion detection method, comprising:
acquiring an induction signal transmitted by a magnetic field sensor; wherein the induction signal is generated by the induction of a magnetic field between the magnetic field sensor on the first kneepad and the magnetic component on the second kneepad;
and calculating the number of the movement steps according to the level distribution of the induction signals.
7. The motion detection method according to claim 6, further comprising:
calculating a second movement step number according to the level distribution of the second induction signal; wherein the second induction signal is an induction signal generated by induction of a magnetic field between the magnetic field sensor on the second knee pad and the magnetic component on the first knee pad;
and taking the minimum value of the motion step number and the second motion step number as the actual motion step number.
8. The motion detection method according to claim 7, further comprising, after the taking the minimum value of the number of motion steps and the second number of motion steps as an actual number of motion steps:
and transmitting the actual motion step number to the terminal equipment.
9. The method according to claim 7, wherein when the magnetic field sensor is a bipolar hall sensor, the calculating the number of movement steps according to the level distribution of the sensing signal comprises:
subtracting the induction signal from a prestored interference signal to obtain a first target induction signal; calculating the number of movement steps according to the level distribution of the first target sensing signal;
the calculating the second motion step number according to the level distribution of the second sensing signal comprises:
subtracting the interference signal from the second sensing signal to obtain a second target sensing signal; and calculating a second movement step number according to the level distribution of the second target sensing signal.
10. The motion detection method of claim 6, further comprising, after said acquiring the sensing signal transmitted by the magnetic field sensor:
calculating the time interval of the motion steps according to the time distribution of the level change of the induction signal;
and calculating the movement speed according to the time interval and the movement steps.
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2021
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Application publication date: 20210625 |