WO2018223505A1

WO2018223505A1 - Gait-identifying wearable device

Info

Publication number: WO2018223505A1
Application number: PCT/CN2017/094354
Authority: WO
Inventors: 袁晖; 李凝华
Original assignee: 深圳市科迈爱康科技有限公司
Priority date: 2017-06-06
Filing date: 2017-07-25
Publication date: 2018-12-13
Also published as: CN107411753A

Abstract

A gait-identifying wearable device. A microprocessor of the wearable device generates, according to current gait feature information of a current user, current gait data, determines, upon the current gait data indicating abnormality and according to current information of an external environment, whether the abnormality is caused by the external environment, and decides the abnormality is caused by a physical condition if not. In this way, the present invention prevents determining abnormality of user gait data caused by an external environment change as being caused by a physical condition of the user, thus improving accuracy of gait data analysis.

Description

A wearable device for recognizing gait

Technical field

The present invention relates to the field of gait recognition, and in particular to a wearable device for recognizing gait.

Background technique

Gait recognition, a kind of biometric identification, aims to identify people by walking posture. Compared with other biometric technologies, such as fingerprints, irises, etc., gait recognition has the advantages of non-contact, long distance and not easy to camouflage. The basic working principle is to find and extract the changing characteristics between individuals from the same walking behavior to achieve automatic identification.

In the field of intelligent video surveillance, gait recognition has advantages over face recognition. Gait refers to the way people walk, which is a complex behavioral feature. The uniqueness of gait can be reflected in the differences in personal physiological structure, including different leg bone lengths, different muscle strengths, different heights of center of gravity, and different motor nerve sensitivities. In the technical practice scene, criminals may dress themselves and prevent even one hair on their own from falling to the crime scene, but there is one thing that they can hardly change completely without leaving characteristic marks. This is walking. posture. In addition, the limit distance of gait recognition detection is close to one hundred steps, which should be the farthest distance that biometric technology can detect.

Although people's gait characteristics satisfy the diversity and unique biometric principles, their satisfaction with the principles of stability and collectability is not ideal. People's age, weight gain, dress changes, and health deterioration can significantly change their gait. At the same time, if a person deliberately speeds up or slows down the pace, the symmetrical lines formed by the body swing may be completely changed, so that the correct rate of gait recognition identity is greatly reduced. In addition, since gait recognition is usually based on the gait information presented by people's legs, if the legs of the recognition object are not seen during video surveillance, such as those wearing robes or long skirts, gait recognition It is useless.

In the era of big data, the data analysis of walking gait has great value, and can have a variety of application scenarios, including quantitative verification of the use of rehabilitation equipment in the field of rehabilitation, rehabilitation training of patients; Daily analysis and diagnosis of diseases; professional sports injury risk assessment, quantitative training and guidance in the field of sports.

Traditional medical-grade large-scale gait analysis equipment has two limitations: First, the price of related equipment is usually in the order of one million, small rehabilitation institutions and sports management organizations are difficult to configure; second, related equipment can only be in a specific laboratory. Use, can not record the user's gait live in the real scene.

The smart wearable device condenses large professional-grade medical equipment into wearable wearable devices, captures the user's foot micro-motion through sensors, collects basic data, and combines artificial intelligence support of the cloud algorithm library to eliminate noise data interference in the environment. Therefore, the accurate gait analysis report of the user in real scenes such as uphill, downhill, and stair climbing is obtained, but the existing gait-based biometric method is susceptible to external environment and misjudges.

The above content is only used to assist in understanding the technical solutions of the present invention, and does not constitute an admission that the above is prior art.

Summary of the invention

The main object of the present invention is to provide a wearable device for recognizing gait, which aims to solve the technical problem that gait recognition is susceptible to external environment and misjudgment.

To achieve the above object, the present invention provides a wearable device for recognizing a gait, the wearable device comprising: a device body, a sensor array, and a microprocessor, wherein the sensor array and the microprocessor are disposed in the device body ;

The sensor array is configured to acquire current gait feature information and current external environment information of the current user, and send the current gait feature information and the current external environment information to the microprocessor;

The microprocessor is configured to generate current gait data according to the current gait feature information, and when the current gait data has an abnormality, determine, according to the current external environment information, whether the abnormality is caused by an external environment, When the abnormality is not caused by the external environment, it is determined that the abnormality is caused by a physical condition.

In an embodiment, the current external environment information includes a plurality of current external environment feature parameters;

The microprocessor is further configured to calculate a difference between the current external environment feature parameter and a preset environment feature parameter; when the difference is not in the first preset range, determine that the abnormality is external Caused by the environment.

In an embodiment, the microprocessor is further configured to compare the current gait data with preset gait data, between the current gait data and the preset gait data. When the matching degree is not in the second preset range, it is determined that the current gait data has an abnormality.

In an embodiment, the microprocessor is further configured to acquire preset gait data in a preset user account, and compare the current gait data with the preset gait data, where When the matching degree between the current gait data and the preset gait data is in the third preset range, determining that the current user corresponds to the preset user account, storing the current gait data to the Preset user accounts.

In an embodiment, the microprocessor is further configured to: when the matching degree between the current gait data and the preset gait data is not within a third preset range, determine the current user Not corresponding to the preset user account, and creating a new user account, storing the current gait data to the new user account, and using the new user account as a preset user account.

In an embodiment, the microprocessor is further configured to store the current external environment information into the preset user account.

In an embodiment, the microprocessor is further configured to send the preset user account, the current gait data, and the current external environment information to a background server, so that the background server The current gait data and the current external environment information are stored in the preset user account.

In an embodiment, the microprocessor is further configured to use the current gait data as environment abnormal gait data when the abnormality is caused by an external environment; when the abnormality is not caused by an external environment; And using the current gait data as body abnormal gait data.

In an embodiment, the wearable device further includes a memory for storing body abnormal gait data, environmental abnormal gait data, current gait data, and current external environment information.

In an embodiment, the microprocessor is further configured to issue prompt information when the abnormality is determined to be caused by the physical condition of the current user.

In the present invention, the microprocessor of the wearable device generates current gait data according to the current gait feature information of the current user, and determines whether the abnormality is from the external environment according to the current external environment information when there is an abnormality in the current gait data. When the abnormality is not caused by the external environment, it is determined that the abnormality is caused by a physical condition, thereby preventing the abnormality of the gait data of the user caused by the change of the external environment as being determined that the physical condition of the user has changed, and the improvement is made. The accuracy of gait data analysis.

DRAWINGS

1 is a structural block diagram of a wearable device for recognizing a gait according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a wearable device for recognizing a gait according to an embodiment of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to Figure 1, a first embodiment of a wearable device for identifying gait according to the present invention is presented.

As shown in FIG. 1, the wearable device includes: a device body, a sensor array, and a microprocessor, wherein the sensor array and a microprocessor are disposed in the device body;

It should be understood that the device body is a main supporting portion of the device, and the sensor array and the microprocessor are disposed in the device body, for example, the wearable device is a smart insole, then the device body It may be a conventional insole in which a sensor array and a microprocessor are disposed.

It should be understood that the sensor array may include at least one of a distance sensor, a height sensor, an angle sensor, a pressure sensor, and a time sensor, and further includes at least one of a temperature sensor, a humidity sensor, a brightness sensor, and a sound sensor, and may also include a ground. A softness detecting sensor, an altitude detecting sensor, a radiation element detecting sensor, a distance detecting sensor for a high-speed moving object such as a vehicle, or an instant image recording system.

It can be understood that the sensor array also has the functions of collecting, recording and analyzing external environment information, and can intelligently identify the external environment where the user is located, so that the gait of the user can be more accurately recognized and accurately performed. Biometrics and more effective recording and analysis of user gait information.

In a specific implementation, the sensor array is built in the wearable device, and can acquire real-time gait feature information generated by the user's feet during walking, such as distance information, altitude information, angle information, and pressure information. And time information, etc. Of course, the gait feature information may further include more or less feature information than the gait feature information, which is not limited in this embodiment. The sensor array transmits the current gait feature information to the microprocessor.

It can be understood that the current gait data is that the microprocessor forms the gait feature information generated by the user during the walking process to form a plurality of data curves, thereby comprehensively fitting and generating the gait data image of the user. Gait data images have stability, periodicity, rhythm, directionality, coordination and individual differences, and can be effectively applied to user identification.

It should be noted that when the user's physical condition changes, the gait data will change significantly, and an abnormality will occur. In addition, when the external environment changes significantly, it may affect the user's gait data to change significantly. abnormal.

It should be understood that the current external environment information is surrounding external environment information where the user is located when the current gait data is generated. For example, current temperature, humidity, brightness, sound, etc., of course, may also include other environmental information, such as the distance of a high-speed moving object such as a vehicle, ground softness, altitude, or radioactive elements, etc., which is not limited in this embodiment. .

It should be noted that the microprocessor can record and analyze the change of the gait data of the user for a period of time (may be two or three days), thereby establishing the preset gait data of the user.

It can be understood that the microprocessor is configured to identify whether the abnormal gait data is caused by an external environment or by a user's physical condition. When an abnormality occurs in the gait data, the current external environment information is acquired, and the current external environment is analyzed. Whether the mutation occurs at the same time, if there is no mutation in the current external environment at the same time, it can be considered that the abnormal gait data is not caused by the external environment, and the abnormality is recognized as the physical condition of the user.

Based on the above-described first embodiment, a second embodiment of the wearable device for recognizing gait of the present invention is proposed.

The current external environment information includes a plurality of current external environment feature parameters;

It can be understood that the current external environment information includes a plurality of current external environment feature parameters, and the current external environment feature parameters may include current temperature, humidity, brightness, sound, and the like. Of course, the current external environment feature parameter may also be Including other environmental characteristic parameters, such as the distance of a high-speed moving object such as a vehicle, the ground softness, the altitude, or the radiation element, etc., this embodiment does not limit this.

In a specific implementation, the preset environment feature parameter is an environment feature parameter in the surrounding external environment information where the user is located when the normal gait data is generated, and the preset environment feature parameter may include: temperature, humidity, brightness, and wind speed. And sounds, etc. Of course, the preset environmental feature parameters may also include other environmental feature parameters, such as the distance of a high-speed moving object such as a vehicle, ground softness, altitude, or a radioactive element, which is not limited in this embodiment.

It can be understood that calculating a difference between the current external environment feature parameter and the preset environment feature parameter is to calculate the same environment feature parameter type in the current external environment feature parameter and the preset environment feature parameter, For example, the value of the temperature in the current external environment characteristic parameter and the value of the temperature in the preset environmental characteristic parameter are calculated.

It should be understood that even in the same time period on the same day, various environmental characteristic parameters in the external environmental information may have certain fluctuations, not constant values, for example, the currently detected temperature is 25°, and the temperature detected in the next minute. It may be 24°. For this temperature change, the human body may not be able to perceive it, and the corresponding gait change will not occur. However, if the temperature suddenly drops by 10°, the human body may have a perception, and the gait will change accordingly, for example. The user originally walked outdoors, suddenly entered the cold storage, the temperature dropped by 10 °, the user may slow down, and the gait changed. That is to say, the difference between the current external environment characteristic parameter and the temperature parameter in the preset environmental characteristic parameter is 10°, which is not in the first preset range (the temperature difference is less than 5°), and the abnormality may be determined by the external environment. cause.

It can be understood that the first preset range is an allowable fluctuation range preset according to an influence of an environmental characteristic parameter in the external environment on the human body, and the allowable fluctuation range is a fluctuation change that the human body cannot perceive, the first preset The range sets different ranges for different environmental feature parameter types. For example, in the first preset range, the first preset range of the temperature may be preset to a temperature difference of less than 5°, and the first preset range of the humidity may be preset to have a humidity difference of less than 10%, etc., which is not limited in this embodiment. In a specific implementation, the range of environmental characteristic parameters that the human body can perceive can be collected to preset a more accurate first preset range.

For example, the user first runs in a long boulevard and then enters an open, unshaded road. As the user suddenly feels the strong sunshine, his gait may have some abnormal changes. At the same time, the current external environment information acquired by the built-in sensor array of the wearable device also changes, acquiring the current external environment feature parameter, comparing the current external environment feature parameter with the preset environment feature parameter, and finding the brightness parameter. There is a difference, and the difference between the brightness parameters is not in the first preset range, then it can be judged that the abnormality is caused by an external environment change.

It should be understood that sometimes the change of the external environment may be caused by multiple environmental characteristic parameters changing at the same time. At this time, when the difference of at least one environmental characteristic parameter is not in the first preset range, the abnormality is determined to be Caused by the external environment.

For example, when the user walks on the road, the gait data (such as the pressure of the sole, the pace, the stride, the step size, and the like) detected by the wearable device suddenly changes sharply; at the same time, the wearable device acquires The humidity parameter of the current external environment also suddenly rises and receives the sound parameters of the thunder. When the difference between the current external environment and the humidity parameter in the preset external environment feature parameter or the difference between the sound parameters is at least one of the first preset ranges, the wearing device can intelligently Interpret abnormal gait data as a result of a sudden change in the external environment.

The microprocessor is further configured to use the current gait data as environment abnormal gait data when the abnormality is caused by an external environment; and when the abnormality is not caused by an external environment, the current step is State data as body abnormal gait data.

It should be understood that when the gait data is abnormal, the current external environment information is acquired, and whether the current external environment is mutated at the same time is analyzed. If the current external environment is mutated at the same time, the abnormality may be considered as the external environment. The current gait data is taken as the environmental abnormal gait data. When the abnormality is not caused by the external environment, the abnormality is determined as the physical condition of the current user, and the current gait data is taken as the physical abnormal gait data.

Further, the abnormal gait data in the historical gait data of the stored user may be analyzed, and the relationship between the environmental feature parameter and the abnormal gait data of the environment may be extracted, and the historical gait data is described in the historical gait data. The environment abnormal gait data is set to preset abnormal gait data, thereby establishing a mapping relationship between the environment feature parameter and the preset abnormal gait data. Using historical data, the accuracy of user gait recognition can be further improved.

It can be understood that the preset abnormal gait data may also be user gait data monitored when various environmental parameters change, and the mapping relationship includes one or more environmental feature parameters and a preset abnormal gait. Corresponding relationship between the data, the corresponding relationship also setting corresponding preset abnormal gait data according to different ranges of environmental characteristic parameter changes.

It should be noted that, when there is an abnormality in the current gait data, the corresponding preset abnormal gait data may be searched in the mapping relationship according to the environmental feature parameter; and the preset abnormal gait data and the current gait are The data is compared, and when the preset abnormal gait data substantially matches or has a consistent change trend with the current gait data and the difference is within an allowable range, the abnormality is recognized as being caused by an external environment.

For example, the user first runs in a long boulevard and then enters an open, unshaded road. As the user suddenly feels the strong sunshine, his gait may have some abnormal changes. At the same time, the current external environment data detected by the wearable device also changes, and the corresponding preset abnormal gait data is searched in the mapping relationship according to the range of the brightness parameter change, and the found preset abnormal step is further found. The state data is compared with the current gait data to see if the two basically match or there is a consistent trend of change and the difference is within the allowable range, then it can be determined that the abnormality is caused by an external environment change.

The microprocessor is further configured to compare the current gait data with preset gait data, and the matching degree between the current gait data and the preset gait data is not in the second When the preset range is determined, it is determined that the current gait data has an abnormality.

It can be understood that the normal gait has stability, periodicity and rhythm, directionality, coordination, when the user's current gait data is different from the preset gait data, and the current gait data and The matching degree between the preset gait data is not in the second preset range, and the second preset range is an allowable data fluctuation range set according to normal fluctuations that may occur in the current normal gait of the user, that is, When the current gait data is not in the normal data fluctuation range, it is determined that the current gait data has an abnormality.

It should be understood that the preset gait data is not necessarily the gait data when the user is in good health, but refers to the gait data generated by the user during normal walking. Of course, the preset gait data may also be based on The actual setting needs to be set accordingly, and this embodiment does not limit this.

For example, if the user's body has a certain disease, the wearer device is used to monitor the gait data of the user, and the gait data of the user at this time is recorded and set as the preset gait data. When the user uses the wearable device again, the current gait data is compared with the preset gait data, and the matching degree between the current gait data and the preset gait data is not in the second pre- When the range is within, it is determined that there is an abnormality in the current gait data, and then it is further possible to identify whether the abnormality is caused by a change in physical condition or an external environment.

Based on the first embodiment described above, a third embodiment of the wearable device for recognizing the gait of the present invention is proposed.

The microprocessor is further configured to acquire preset gait data in a preset user account, compare the current gait data with the preset gait data, and use the current gait data and the When the matching degree between the preset gait data is in the third preset range, it is determined that the current user corresponds to the preset user account, and the current gait data is stored to the preset user account.

It should be understood that the wearable device may be used by multiple users, so different user accounts are set up for different users, the user accounts storing relevant gait data for the user. Then, when the user uses, the identity of the user can be identified first, so as to better record and analyze the gait data of the user.

It should be noted that the normal gait has individual differences. For different users, their gait data is different, so when the user uses the wearable device, the user's current gait data is firstly used. Compare with preset gait data. The third preset range is an allowable fluctuation range set according to individual differences of different user gaits. In a specific implementation, the appropriate range may be adjusted according to the actual operation accuracy as the third preset range.

In a specific implementation, when the matching degree between the current gait data and the preset gait data is in a third preset range, determining that the current user is a user corresponding to the preset gait data, That is, the identification of the user identity is achieved.

The microprocessor is further configured to: when the matching degree between the current gait data and the preset gait data is not within a third preset range, determine the current user and the preset user The account does not correspond, and a new user account is created, the current gait data is stored to the new user account, and the new user account is used as a preset user account.

It should be understood that, when the matching degree between the current gait data and the preset gait data is not within the third preset range, determining that the current user is not the user with the preset The user corresponding to the account, that is, the preset gait data in the preset user account is not the gait data of the current user, and the current user may be considered as a new user, and a new user account may be created for the new user. The gait data of the new user is recorded and analyzed later.

The microprocessor is further configured to store the current external environment information into the preset user account.

It can be understood that the wearable device may be used by multiple users, and then, when the user uses, the identity of the current user is first identified, and after determining that the current user is the user corresponding to the preset user account, The current gait data and the current external environment information are stored in the preset user account, so that the gait data of the user is recorded and analyzed more accurately.

The microprocessor is further configured to send the preset user account, the current gait data, and the current external environment information to a background server, so that the background server sends the current gait data and the The current external environment information is stored in the preset user account.

It should be understood that the preset user account, the current gait data, and the current external environment information are sent to the background server, so that the gait data of the current user is remotely managed, and when the wearable device is damaged or faulty, The gait data of the current user is not lost, and when the current user uses the new wearable device, the background server may also be requested to send the relevant gait data of the current user to the new wearable device, of course, The preset gait data and preset environment feature parameters can also be stored to the background server.

The microprocessor is further configured to issue prompt information when the abnormality is determined to be caused by the physical condition of the current user.

It can be understood that when the abnormality is determined to be caused by the physical condition of the current user, the current user's body may have a certain disease, and a prompt message is sent to remind the current user to perform a corresponding physical examination. Of course, the prompt information may also be sent to a remote medical staff or other user's corresponding device to remind the medical staff to perform a physical examination on the user, or other users understand the physical condition of the user.

It should be understood that if the user's body has a certain disease, the wearer device is used to monitor the gait data of the user, and the gait data of the user is recorded and set as the preset gait data for a period of time, such as one month. After the gait data of the user is abnormal, that is, the difference between the current gait data and the preset gait data is not in the second preset range. When the abnormality is determined to be caused by the physical condition of the user, it may be that the user's physical condition is improved or the disease is deteriorated.

For example: the user is diagnosed with diabetes. When the user wears the wearable device to start walking, the wearable device detects an abnormality in the gait data (for example, the sole pressure data is abnormal, and the pressure on some parts of the sole is significantly decreased). At the same time, the wearable device detects a sudden increase in humidity parameters, as well as sound parameters similar to water flow. In this regard, the wearable device intelligently determines that the user is passing a road with a puddle, and the user may intentionally raise or raise the feet to avoid directly identifying the abnormality (an abnormality of the sole pressure) as The user's diabetes is getting worse. Therefore, the prompting information to the user, the remote medical staff or other users caused by the misjudgment is avoided.

It should be understood that the physical condition of the user also changes when the external environment changes. In the specific implementation, when the abnormality of the gait data of the user is detected, and the external environment is abrupt, other users or remote medical care The person can get in touch with the user to confirm whether the gait is abnormal due to a sudden change in the environment, an abnormal gait, or a change in physical condition. In turn, the current gait data is classified more accurately, which provides more accurate reference data for subsequent monitoring, and also ensures that users can get help from other users or remote medical staff in time when the physical condition changes.

The memory is configured to store physical abnormal gait data, environmental abnormal gait data, current gait data, and current external environment information.

It should be understood that storing abnormal gait data, environmental abnormal gait data, current gait data and current external environment information is beneficial to more in-depth gait data analysis of the user's gait data, which is beneficial to the user step. The management of state data can also extract more accurate gait data as preset gait data, and can understand the physical condition of each stage of the user according to various gait data stored.

Referring to FIG. 2, FIG. 2 is a schematic structural diagram of a wearable device for recognizing a gait according to an embodiment of the present invention.

As shown in FIG. 2, the wearing device is a smart insole comprising: an antibacterial fabric 1, a waterproof layer 2, a printed circuit board layer 3, a memory 4, a battery 5, a waterproof layer 6, and a bio-force layer 7. The GPS locator 8, the microprocessor 9, the sensor array 10 and the foam layer 11, the sensor array 10 comprising an external environment detecting sensor.

Those skilled in the art will appreciate that the structural schematic shown in FIG. 2 does not constitute a definition of a smart insole, may include more or fewer components than illustrated, or combine some components, or different component arrangements.

It is to be understood that the wearable device may be an insole, a belt, a waist pack, an earphone, a pair of glasses, or a headlight worn on the head, etc., which is not limited in this embodiment.

The wearable device can be continuously used multiple times in a real scene, and can identify the external environment. Compared with the large gait analysis device, the time dimension is added to become four-dimensional data, and the analysis of the user timing signal is completed. This can be applied to daily detection of user gait, early warning of chronic diseases (including Alzheimer's disease, Parkinson's disease, diabetic foot, etc.), as well as abnormal gait analysis and early warning tips for children's toddler learning.

It should be noted that, in order to achieve comprehensive recording, analysis and identification of the user's gait, the wearable device may be used in combination with other wearable devices, for example, when the wearable device is an insole, the user is using In the insole, a belt or a waist bag having a distance detecting function may be attached to the waist at the same time, or a headlight or a headphone or a glasses having a distance detecting function on the head strap may be simultaneously used, and this embodiment does not limit.

It should be noted that, in this document, the terms "include", "include" or any other variant thereof It is intended to cover non-exclusive inclusions such that a process, method, article, or system that includes a series of elements includes not only those elements but also other elements not specifically listed, or Includes elements inherent to such a process, method, item, or system. In the absence of more restrictions, an element defined by the statement "includes a..." is not excluded from the process of including the element, There are additional identical elements in the method, item or system.

The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Those skilled in the art can clearly understand the above by the description of the above embodiments. The embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course hardware, but in many cases the former is a better implementation. Based on such understanding, the present invention The technical solution in essence or the contribution to the prior art can be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, light). The disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A wearable device for recognizing gait, characterized in that: the wearable device comprises: a device body, a sensor array and a microprocessor, wherein the sensor array and the microprocessor are disposed in the device body;

The sensor array is configured to acquire current gait feature information and current external environment information of the current user, and send the current gait feature information and the current external environment information to the microprocessor;

The microprocessor is configured to generate current gait data according to the current gait feature information, and when the current gait data has an abnormality, determine, according to the current external environment information, whether the abnormality is caused by an external environment, When the abnormality is not caused by the external environment, it is determined that the abnormality is caused by a physical condition.
The wearable device according to claim 1, wherein the current external environment information comprises a plurality of current external environment feature parameters;

The microprocessor is further configured to calculate a difference between the current external environment feature parameter and a preset environment feature parameter; when the difference is not in the first preset range, determine that the abnormality is external Caused by the environment.
The wearable device according to claim 1, wherein the microprocessor is further configured to compare the current gait data with preset gait data, in the current gait data and When the matching degree between the preset gait data is not in the second preset range, it is determined that the current gait data has an abnormality.
The wearable device according to claim 2, wherein the microprocessor is further configured to compare the current gait data with preset gait data, and the current gait data and When the matching degree between the preset gait data is not in the second preset range, it is determined that the current gait data has an abnormality.
The wearable device according to claim 1, wherein the microprocessor is further configured to acquire preset gait data in a preset user account, and the current gait data and the preset step. And comparing, when the matching degree between the current gait data and the preset gait data is in a third preset range, determining that the current user corresponds to the preset user account, The current gait data is stored to the preset user account.
The wearable device according to claim 2, wherein the microprocessor is further configured to acquire preset gait data in a preset user account, and the current gait data and the preset step And comparing, when the matching degree between the current gait data and the preset gait data is in a third preset range, determining that the current user corresponds to the preset user account, The current gait data is stored to the preset user account.
The wearable device according to claim 5, wherein the microprocessor is further configured to: the matching degree between the current gait data and the preset gait data is not in a third preset Within the scope, determining that the current user does not correspond to the preset user account, and creating a new user account, storing the current gait data to the new user account, and the new user account As a default user account.
The wearable device according to claim 6, wherein the microprocessor is further configured to: the matching degree between the current gait data and the preset gait data is not in a third preset Within the scope, determining that the current user does not correspond to the preset user account, and creating a new user account, storing the current gait data to the new user account, and the new user account As a default user account.
The wearable device according to claim 8, wherein the microprocessor is further configured to store the current external environment information into the preset user account.
The wearable device according to claim 9, wherein the microprocessor is further configured to send the preset user account, the current gait data, and the current external environment information to a background server So that the background server stores the current gait data and the current external environment information into the preset user account.
The wearable device according to claim 1, wherein the microprocessor is further configured to use the current gait data as environmental abnormal gait data when the abnormality is caused by an external environment; When the abnormality is not caused by the external environment, the current gait data is taken as body abnormal gait data.
The wearable device according to claim 2, wherein the microprocessor is further configured to use the current gait data as environmental abnormal gait data when the abnormality is caused by an external environment; When the abnormality is not caused by the external environment, the current gait data is taken as body abnormal gait data.
The wearable device according to claim 11, wherein the wearable device further comprises a memory for storing body abnormal gait data, environmental abnormal gait data, current gait data, and current external environment. information.
The wearable device according to claim 1, wherein the microprocessor is further configured to issue a prompt message when the abnormality is determined to be caused by a physical condition of the current user.
The wearable device according to claim 2, wherein the microprocessor is further configured to issue a prompt message when the abnormality is determined to be caused by a physical condition of the current user.