CN114767080A

CN114767080A - Method for eliminating step counting error of wearable equipment and wearable equipment

Info

Publication number: CN114767080A
Application number: CN202210456078.9A
Authority: CN
Inventors: 位慧芳
Original assignee: Zhengzhou Central Hospital
Current assignee: Zhengzhou Central Hospital
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-22

Abstract

The wearable equipment can monitor the environmental temperature variation, the heart rate variation of a wearer, acceleration data and a wrist pressure value in real time, detect whether the error step counting exists or not simultaneously in two modes according to the data, eliminate the error step counting caused by bumping or shaking after the wearer enters a vehicle, monitor and early warn heart rate mutation caused by non-motion factors and timely seek medical advice.

Description

Method for eliminating step counting error of wearable device and wearable device

Technical Field

The invention relates to the field of wearable equipment, in particular to a method for eliminating step counting errors of the wearable equipment and the wearable equipment.

Background

The wearable device may be worn directly on the body or may be a portable device integrated into the user's clothing or accessory. Wearable equipment has possessed some computing function, joinable cell-phone and has existed with all kinds of intelligent terminal's portable accessory form mostly, mainly includes intelligent wrist-watch, intelligent bracelet, intelligent glasses, intelligent sports shoes etc..

In recent years, with the health concern of people, sports wearable devices are more and more concerned by people and become the most popular product type at present. Wearable equipment of operation type has motion monitoring function, for example meter step function, heart rate monitoring function etc. monitors through motion data volume and the physical index to the user, encourages people to participate in healthy motion. Present wearable equipment mostly uses intelligent wrist-watch and intelligent bracelet as the owner. The existing intelligent watch or intelligent bracelet gradually begins to add functions such as body fat rate, electrocardiogram and blood pressure measurement besides the original functions of step counting, sleep monitoring and heart rate detection.

Smart watch or smart bracelet are a wear-type smart machine, and the user wears the back and can take notes real-time data such as exercise, sleep and diet among the daily life to with these data and cell-phone, panel computer synchronization, play the effect of leading healthy life through data, smart bracelet is as the scientific and technological product that receives the user's attention to, and the powerful function that its possessed is just quietly permeating and changing people's life on the ground of not having a breath.

As the most common wearable device in daily life, a smart watch or smart bracelet is used to record the number of steps of a wearer every day. With the increasing attention on health and the continuous popularization of scientific exercise concepts, the device has been widely used as a means for monitoring the amount of exercise. And can help monitor the daily activities of people with obesity and metabolic related diseases and help them to make exercise prescriptions, thereby promoting their health and developing good living habits. According to research evidence, most researchers recommend 10000 steps/day for walking, which is beneficial to body health and prevention of chronic diseases; fast walking 2000 steps/day can effectively reduce the risk of disease. According to an early meta analysis, the results showed that the use of pedometers in the elderly significantly increased their physical activity and significantly decreased their BMI index and blood pressure. The outdoor activity has positive effects on preventing myopia and obesity of children and enhancing the health indexes of adults and old people.

However, when the environment is switched, for example, the vehicle is switched from the outdoor to the inside of the vehicle, and when the road condition is not good, the user may mistakenly record the conditions such as bumpiness and jitter.

Simultaneously, it is incorrect to wear at wearable equipment, for example wear the pine, when the human body at position is worn in insufficient contact, it is not good to lead to wearable equipment and human followability, can miscalculating or miss the meter step.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a method for eliminating a wearable device step-counting error, which comprises the following steps:

the wearable device monitors the environment temperature variation, the heart rate variation of a wearer and acceleration data in real time; a controller in the wearable device calculates a speed and a displacement amount according to the acceleration data;

if the ambient temperature variation is greater than the temperature variation threshold Tt, and the heart rate variation is greater than the heart rate variation threshold Thb, simultaneously the displacement amount exceeds common building coverage Td, if the wearable equipment is continuously counting steps, the controller judges that the wearer enters the inside of the vehicle and generates wrong counting steps, and the controller clears the wrong counting steps.

Preferably, after the controller determines that the wearer enters the vehicle and a step is counted by mistake, the wearable device makes a data request for the connected intelligent terminal device, calls a GPS signal or a Beidou signal of the intelligent terminal, and verifies the speed and/or the displacement.

Preferably, the wearable device is provided with a wrist strap, a pressure sensor is arranged in the wrist strap, and the controller acquires the pressure value of the pressure sensor in real time.

Preferably, if the controller determines that the pressure value is smaller than a threshold value Tl, the linear motor in the wearable device sends a first vibration signal, and if the pressure value is larger than a threshold value Th, the linear motor sends a second vibration signal, where Th > Tl.

Preferably, the controller calculates the similarity of the pressure signal waveform and the pressure signal waveform during normal step counting in real time, if the similarity is greater than a step counting similarity threshold Ts, the controller judges that the step counting is normal step counting, otherwise, the controller judges that the step counting is false step counting, and the step counting is eliminated.

Preferably, if the controller monitors that the heart rate change amount is greater than a heart rate change amount threshold Thb and the similarity is smaller than a step counting similarity threshold Ts, it is determined that the heart rate abnormality is caused by a non-motion factor, and at this time, the linear motor in the wearable device sends out a third vibration signal.

Preferably, the wearable device sends out the third vibration signal in time, carries out remote alarm, in time sends the hospital or family members with unusual information.

The invention also provides wearable equipment of the method for eliminating the step counting error, wherein the wearable equipment comprises a wearable main body and a wrist band for bearing the wearable main body, and the wearable main body comprises a controller module, a heart rate acquisition module, a temperature acquisition module, an acceleration data acquisition module, a communication module and a linear motor; a wrist pressure acquisition module is arranged in the wrist strap.

The beneficial effects of the invention are:

1. the wearable device can monitor whether the environment where the wearer is located changes or not according to the temperature variation and the heart rate variation;

2. integrating data monitored by an acceleration sensor in the wearable device to obtain the speed and displacement of a wearer, and comprehensively judging whether the wearer is in the vehicle or not by combining the temperature variation and the heart rate variation; when the wearer is judged to be in the vehicle, the step is continuously counted, the step is not counted by mistake, and the step is eliminated;

3. the intelligent terminal interconnected with the wearable equipment is adopted to verify the speed and displacement data obtained by the acceleration integration, so as to avoid misjudgment;

4. monitoring a pressure value in real time by using a pressure sensor arranged on the wrist strap, judging whether the wearable equipment is worn correctly or not according to the pressure value, and sending different vibration signals to remind;

5. similarity calculation is carried out on the waveform of the real-time pressure sensor signal and the waveform of the pressure sensor signal in a normal step counting state, and if the waveform of the real-time pressure sensor signal is lower than a threshold value, step counting is judged to be mistaken;

6. the pressure sensor is used for judging whether the wearable equipment is worn correctly or not and monitoring whether the step counting is mistaken or not;

7. the two wrong step counting monitoring modes run in parallel, if any mode detects wrong step counting, the wrong step counting is judged to exist, and corresponding step numbers are eliminated or eliminated, so that the wrong step counting detection accuracy of the wearable equipment is improved;

8. when the wearable device monitors that the heart rate has obvious changes, if the pressure sensor signal does not monitor step counting or the pressure sensor signal has no obvious changes, the abnormal heart rate is judged to be caused by non-motion factors, and the wearable device reminds the wearer.

Drawings

Fig. 1 shows a resulting block diagram of a wearable device;

FIG. 2 shows a flow chart for eliminating a wearable device step error;

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the description of the embodiments of the invention given above, are within the scope of protection of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

At present, along with the rapid development and the popularization of wearable equipment, mainstream wearable equipment all possesses basic functions such as meter step, temperature measurement, measurement rhythm of the heart under general condition to wearable equipment can also be connected with intelligent terminal such as smart mobile phone, realizes functions such as data synchronization, quick setting between the two. At the present stage, the most commonly used wearable devices are smart bracelets or smart watches. Specifically, as shown in fig. 1, the wearable device of the present embodiment specifically includes a controller module, a heart rate acquisition module, a temperature acquisition module, a wrist pressure acquisition module, an acceleration data acquisition module, a communication module, and a linear motor.

Wearable settings such as intelligence bracelet or intelligent wrist-watch all possess the meter step function, adopt acceleration acquisition module to count the step, but the technical problem of the ubiquitous meter step is inaccurate, especially exist when being in relative quiescent condition under the arm tremble or jolt the condition appear the mistake meter step or can wear to set up and wear unreasonablely, cause that the followability between wearable equipment and the arm is not good, meter step inaccurate problem.

Specifically, when the arm shakes or shakes, the wrong step counting occurs most often in vehicles such as automobiles, and when the vehicles walk on bumpy roads, the arm bumps or shakes along with the fluctuation of the roads, and the three-axis acceleration sensor used for step counting in the wearable device detects the change of the acceleration value, so that the bumpy or shake is counted by mistake, and the wrong step counting occurs.

In order to solve the technical problem, the embodiment provides a technical solution for eliminating a step-counting error of a wearable device, which is described in detail below.

When a wearer enters a vehicle such as an automobile from the outside, the inside and the outside of the vehicle have a certain temperature difference in a general situation. And the wearable device wearer is a process from a state of motion to a relatively static state from outside the vehicle to sitting inside the vehicle, in which process the wearable device wearer can produce certain heart rate variations.

On this basis, based on the above relevant data changes, the present embodiment can detect the heart rate and the ambient temperature of the wearer of the wearable device in real time. When the temperature and the heart rate are detected to be obviously changed and the change time of the temperature and the heart rate is compared and synchronized, the change of the surrounding environment and the motion state of the wearer can be judged. However, since the light does not necessarily enter the inside of a vehicle such as an automobile, and may enter the inside of a building from the outside, it is necessary to perform comprehensive determination by combining other means.

Specifically, after a wearer enters a vehicle, the vehicle is transited from a static state to a motion state after starting, the acceleration value of a three-axis acceleration sensor used for step counting in the wearable device in the horizontal direction can be continuously increased, at the moment, the acceleration value in the horizontal direction can be integrated, namely the motion speed of the vehicle can be obtained, and the speed value is further integrated, so that a corresponding displacement can be obtained, when the speed value exceeds a certain speed threshold value Tv, or the displacement exceeds a common building coverage range Td, the situation that the wearer is inside a building can be eliminated, and the wearer is judged to be inside the vehicle.

Therefore, after the speed is detected to exceed a certain speed threshold Tv, or after the displacement is detected to exceed a common building coverage Td, step counting data is counted, if the temperature and the heart rate are obviously changed, the ambient temperature variation is larger than a temperature variation threshold Tt, and the heart rate variation is larger than a heart rate variation threshold Thb, and if the wearable device continuously counts steps in the situation, the wearable device judges that the step counting error occurs in the wearable device at the moment, and the wearable device clears the continuous step counting.

In order to verify whether the detected speed and displacement are accurate, whether a wearer of the wearable device is actually in the vehicle instead of the building is further confirmed, the wearable device makes a data request for an intelligent terminal device connected with the wearable device, the terminal device can call a GPS signal or a Beidou signal of the wearable device to obtain accurate speed and displacement data, and whether the judgment that the wearer is in the vehicle is accurate is verified through an acceleration sensor in the wearable device according to the data. However, the method has limitations that since the intelligent terminal needs to establish stable real-time connection with the wearable device, wireless data communication is generally needed, energy consumption is large, and endurance is particularly important for the wearable device, only once verification is performed when the wearable device just determines that the wearer is inside the vehicle, and continuous verification is not performed subsequently.

Example 2

This embodiment is a further improvement on the basis of embodiment 1, and common parts of the technical solutions are not described herein again.

Wearable equipment of type such as similar to intelligent bracelet or intelligent wrist-watch all wears at the wrist, and when the wrist strap wore the pine, wearable equipment and the unable abundant laminating of wrist lead to wearable equipment can't fully follow the wrist and carry out synchronous motion, that is to say that wearable equipment is relatively poor with the followability of wrist, and slight vibrations all probably are thought the person of wearing by mistake and are moving and meter step, lead to the meter step not accurate enough. But in another case, when the wrist strap is worn too tightly, the wearable device may be worn comfortably and the user experience may be impaired.

In order to solve the technical problem, the present embodiment proposes the following technical solutions. Specifically, a pressure sensor is provided in a wrist band of the wearable device to detect a contact pressure between the wrist band and the wrist. When the pressure is smaller than the threshold Tl, the wrist strap is worn loosely, and a linear motor in the wearable device sends out a first vibration signal to remind a wearer of adjusting the wrist strap; when the pressure is greater than the threshold Th, the wrist strap is worn too tightly at two points of the wearable device, and the linear motor in the wearable device sends out a second vibration signal to remind a wearer of adjusting the wrist strap.

Wherein Th > Tl and the first and second shock signals have a significant difference enabling the wearer to unambiguously identify the different meanings which they represent.

Example 3

This embodiment is a further improvement on the basis of embodiment 1 or embodiment 2, and common parts of the technical solutions are not described herein again.

During normal movements of the human body, the swinging of the arms is periodic and has a high degree of similarity and repeatability. Therefore, the embodiment can identify and eliminate the false step count caused by bump or jitter through the characteristic.

Specifically, as shown in fig. 2, during normal movement, the wearable device records and stores the waveform signal of the pressure sensor during normal movement. In the step counting process, wearable equipment monitors the pressure sensor value of the wrist strap in real time, similarity calculation is carried out on the waveform of a pressure sensor signal and the waveform of the pressure sensor when the step counting is normal in real time, when the similarity calculation result exceeds a step counting similarity threshold Ts, the step counting is judged to be normal, otherwise, the step counting is judged to be wrong, and the step counting is eliminated.

Under this condition, pressure sensor both can be used to judge whether wearable equipment wears correctly, can judge simultaneously whether the wrong meter step has appeared again.

Particularly, as the situation that the difference between the internal temperature and the external temperature of the vehicle is not large may exist, or the situation that the heart rate is abnormal due to other factors may exist, or the situation that the wrist movement cannot be accurately measured by the pressure sensor due to the wearing of the wearable device exists, the possibility that the step miscounting situation is missed is detected in each single monitoring mode, and therefore in the embodiment, the detection task of detecting the step miscounting by measuring the temperature and matching the heart rate in the operation of the intelligent wearable device is performed, and meanwhile, the detection task of detecting the step miscounting by detecting the wearing pressure of the wrist strap is performed. If either task detects the wrong step counting, the step counting is judged to be wrong, and the corresponding step number is eliminated or eliminated, so that the accuracy and the reliability of the step counting detection are improved.

Example 4

This embodiment is a further improvement on the basis of embodiment 1, embodiment 2, or embodiment 3, and common parts of the technical solutions are not described herein again.

Wearable equipment not only can satisfy daily each item physiological parameter and detect the needs, can also provide the early warning for health monitoring and medical treatment.

For example, the heart rate variation of a person may be caused by activities such as exercise, and may also be caused by conditions such as illness occurring in the body, so that the heart rate variation caused by different reasons needs to be monitored and identified, and corresponding early warning is given after identification so as to remind the wearer to see a doctor and diagnose in time.

Specifically, when monitoring that the rhythm of the heart obvious change appears at wearable equipment, monitor the pressure sensor signal simultaneously, if the pressure sensor signal does not monitor the meter step, or obvious change does not appear in the pressure sensor signal, then judge that this rhythm of the heart is unusual to be aroused by non-motion factor, wearable equipment in time sends the third vibration signal this moment, remind the person of wearing, can also carry out functions such as remote alarm simultaneously, perhaps in time send the hospital with unusual study, family members etc. be convenient for in time seek medical advice. The absence of significant changes in the pressure sensor signal herein means that no significant changes in the pressure sensor's period, amplitude, waveform, etc. occur.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

Claims

1. A method for eliminating step counting errors of wearable equipment is characterized by comprising the following steps:

the wearable device monitors the environment temperature variation, the wearer heart rate variation and the acceleration data in real time;

a controller in the wearable device calculates a speed and a displacement amount according to the acceleration data;

if the environment temperature variation is larger than the temperature variation threshold Tt, the heart rate variation is larger than the heart rate variation threshold Thb, meanwhile, the displacement exceeds the coverage range Td of a common building, if the wearable device continuously counts steps, the controller determines that the wearer enters the inside of the vehicle and mistakenly counts the steps, and the controller clears the mistakenly counted steps.

2. The method for eliminating the step counting error of the wearable device according to claim 1, wherein after the controller determines that the wearer enters the inside of the vehicle and a step counting error occurs, the wearable device makes a data request to a connected intelligent terminal device, calls a GPS (global positioning system) signal or a Beidou signal of the intelligent terminal, and verifies the speed and/or the displacement.

3. The method for eliminating the step counting error of the wearable device according to the claim 1 or 2, characterized in that the wearable device is provided with a wrist strap, a pressure sensor is arranged in the wrist strap, and the controller acquires the pressure value of the pressure sensor in real time.

4. The method of claim 3, wherein the controller sends a first vibration signal to a linear motor in the wearable device if the pressure value is determined to be less than a threshold Tl, and sends a second vibration signal to the linear motor if the pressure value is greater than a threshold Th, wherein Th > Tl.

5. The method for eliminating step counting error of wearable equipment according to claim 3, wherein the controller calculates similarity between the pressure signal waveform and the pressure signal waveform during normal step counting in real time, if the similarity is greater than a step counting similarity threshold Ts, the controller judges that the step counting is normal step counting, otherwise, the controller judges that the step counting is false step counting, and the step counting is eliminated.

6. The method for eliminating wearable device step counting error according to claim 3, wherein if the controller monitors that the heart rate change amount is larger than a heart rate change amount threshold value Thb and the similarity is smaller than a step counting similarity threshold value Ts, the controller determines that the heart rate abnormality is caused by a non-motion factor, and a linear motor in the wearable device sends out a third vibration signal.

7. The method for eliminating the step counting error of the wearable device according to claim 6, wherein the wearable device sends out a third vibration signal in time and simultaneously carries out remote alarm to send out abnormal information to a hospital or a family member in time.

8. A wearable device implementing the method of eliminating wearable device step error of any of claims 1-7, wherein the wearable device comprises a wearable body and a wrist band for carrying the wearable body, the wearable body comprising a controller module, a heart rate acquisition module, a temperature acquisition module, an acceleration data acquisition module, a communication module, and a linear motor; a wrist pressure acquisition module is arranged in the wrist strap.