CN110954972B

CN110954972B - Wearable device, and falling detection method, device and storage medium thereof

Info

Publication number: CN110954972B
Application number: CN201911094496.2A
Authority: CN
Inventors: 梁庆威
Original assignee: Anhui Huami Information Technology Co Ltd
Current assignee: Anhui Huami Information Technology Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2022-04-15
Anticipated expiration: 2039-11-11
Also published as: CN110954972A

Abstract

The invention relates to the technical field of electronic equipment, and particularly provides wearable equipment, a falling detection method and device thereof, and a storage medium. A wearable device drop detection method includes: when the wearable device is detected to be in an unworn state, acquiring the acceleration of the wearable device; judging whether the acceleration direction is downward or not and whether the acceleration value is within a preset threshold range or not; when the acceleration direction is downward and the acceleration value is within a preset threshold range, judging whether the wearable equipment generates upward acceleration within a first preset time; when the wearable device generates an upward acceleration within a first preset time, a detachment confirmation signal confirming detachment of the wearable device is generated. The detection method provided by the invention reduces the misjudgment rate and is more accurate in detection.

Description

Wearable device, and falling detection method, device and storage medium thereof

Technical Field

The invention relates to the technical field of electronic equipment, in particular to wearable equipment, a falling detection method and device thereof, and a storage medium.

Background

Along with the development of science and technology, intelligent wearable equipment is also more and more popularized to wearable equipment represented by intelligent watches and bracelets has become the important direction of electronic product development, has the functions of heart rate monitoring, step counting, timing, weather forecast and the like, and can meet the daily health monitoring and exercise assistance of people.

However, wearable devices are easy to fall off and lose in sports scenes, and in order to prevent the fall off and the loss, existing wearable devices are generally connected with a mobile terminal through bluetooth, for example, and an alarm can be given when the devices are beyond a distance from the mobile terminal. However, in practical application scenarios, on the one hand, when the distance is exceeded, the wearable device is often difficult to find again, for example, falling off the vehicle or in a scene with complex terrain. On the other hand, a too high false positive rate often leaves the user unhappy turning off the function, causing it to become a chicken rib function.

Disclosure of Invention

In order to solve the technical problem of poor falling detection accuracy of the existing wearable equipment, the invention provides wearable equipment with more accurate judgment, and a falling detection method, a device and a storage medium thereof.

In a first aspect, a fall-off detection method for a wearable device is provided, including:

detecting an acceleration of the wearable device when the wearable device is detected to be in an unworn state;

judging whether the acceleration direction is downward or not and whether the acceleration value is within a preset threshold range or not;

when the acceleration direction is downward and the acceleration value is within a preset threshold range, judging whether the wearable equipment generates upward acceleration within a first preset time;

generating a detachment confirmation signal confirming detachment of the wearable device when the wearable device generates an upward acceleration within a first preset time.

In some embodiments, the generating a detachment confirmation signal confirming detachment of the wearable device when the wearable device produces an upward acceleration within a first preset time includes:

when the wearable device generates upward acceleration within a first preset time, judging whether the acceleration value of the wearable device is zero within a second preset time;

and when the acceleration value of the wearable device is zero within a second preset time, generating a falling confirmation signal for confirming that the wearable device falls off.

In some embodiments, after the generating a detachment confirmation signal confirming detachment of the wearable device, further comprising:

generating an alarm signal according to the falling-off confirmation signal; and/or

And sending the falling confirmation signal to the mobile equipment.

In some embodiments, the obtaining the acceleration of the wearable device when detecting that the wearable device is in an unworn state includes:

when an unworn signal for characterizing that the wearable device is dropped is received, determining that the wearable device is in an unworn state.

In some embodiments, the unworn signal includes a capacitance change signal, a voltage change signal, a light sensitivity change signal.

In a second aspect, there is provided a wearable device comprising:

a wear sensor to generate an unworn signal that the wearable device is dropped;

an acceleration sensor to detect acceleration of the wearable device; and

a controller comprising a processor and a memory, the memory communicatively coupled to the processor and storing computer readable instructions executable by the processor, the processor performing the method of detecting detachment of a wearable device as described in any of the above embodiments when the computer readable instructions are executed.

In some embodiments, the wear sensor comprises at least one of:

capacitive sensor, voltage sensor, photosensitive sensor.

In some embodiments, the wearable device further comprises:

the alarm is used for sending out an alarm when receiving the alarm signal sent by the processor; and/or

And the wireless transmission unit is used for sending the falling-off confirmation signal to the mobile equipment.

In a third aspect, a fall-off detection apparatus for a wearable device is provided, including:

the acquisition module is used for acquiring the acceleration of the wearable device when the wearable device is detected to be in an unworn state;

the first processing module is used for judging whether the acceleration direction is downward and whether the acceleration value is within a preset threshold range;

the second processing module is used for judging whether the wearable equipment generates upward acceleration within a first preset time when the acceleration direction is downward and the acceleration value is within a preset threshold range; and

and the third processing module is used for generating a falling confirmation signal for confirming that the wearable device falls off when the wearable device generates upward acceleration within the first preset time.

In some embodiments, the third processing module comprises:

the judging unit is used for judging whether the acceleration value of the wearable device is zero or not within a second preset time when the wearable device generates upward acceleration within a first preset time; and

the generating unit is used for generating a dropping confirmation signal for confirming that the wearable device drops when the acceleration value of the wearable device is zero in a second preset time.

In some embodiments, the detachment detection device further includes:

the fourth processing module is used for determining that the wearable device is in an unworn state when an unworn signal for representing that the wearable device falls off is received.

In a fourth aspect, a storage medium is provided, which stores computer-readable instructions for causing a computer to execute the method for detecting the detachment of a wearable device described in any of the above embodiments.

According to the falling-off detection method of the wearable device, when the wearable device is detected to be in an unworn state, the acceleration of the wearable device is obtained, whether the acceleration direction is downward or not is judged, and whether the acceleration value is within a preset threshold range or not is judged, so that whether the wearable device is in a similar free-falling state or not is preliminarily confirmed. When judging that wearable equipment is in similar free-fall state, further judge in first preset time whether wearable equipment produces ascending acceleration, if, then think wearable equipment after transient free-fall, fall to the ground and slow down bounce or jolt, confirm that wearable equipment confirms to drop. Whether the wearable equipment is really in the falling state or not is confirmed through the combination of various judgment conditions, and the falling detection is more accurate and timely.

According to the falling detection method for the wearable equipment, after the wearable equipment is judged to generate upward acceleration within the first preset time, whether the acceleration of the wearable equipment is zero or not within the second preset time is further judged, if yes, the wearable equipment is determined to enter a static state after falling to the ground and decelerating and rebounding or bumping, so that the fact that the wearable equipment really falls off is determined, and the falling detection accuracy is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a wearable device according to some embodiments of the present invention.

Fig. 2 is a flow chart of a wearable device detachment detection method according to some embodiments of the present invention.

Fig. 3 is a flow chart of a method for detecting detachment of a wearable device according to further embodiments of the present invention.

Fig. 4 is a flowchart of a detachment detection method of a wearable device according to still another embodiment of the present invention.

FIG. 5 is a block diagram of a wearable device detachment detection apparatus according to some embodiments of the present invention

FIG. 6 is a block diagram of a third processing module in some embodiments according to the invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The falling detection method of the wearable equipment provided by the invention is suitable for wearable equipment in any form, such as watch represented by a smart watch and a bracelet; glasses such as AR or VR glasses and helmets; and for example, the wearable equipment is accurately detected whether to fall off or not by combining multiple conditions and judging the generation forms of clothes, hangers, accessories, earphones and the like which are supported by human limbs, so that the user is accurately reminded, and the equipment is prevented from being lost.

A schematic structural diagram of a wearable device 600 according to an embodiment of the present invention is shown in fig. 1. As shown in fig. 1, a wearable device 600 provided by an embodiment of the present invention includes: the controller comprises a processor 601 and a memory 602, and the wearing sensor 604 and the acceleration sensor 605 are connected with the processor 601.

The processor 601, the memory 602, the wearing sensor 604, and the acceleration sensor 605 establish a communication connection between any two via the bus 603.

The processor 601 may be of any type, having one or more processing cores. The system can execute single-thread or multi-thread operation and is used for analyzing instructions to execute operations of acquiring data, executing logic operation functions, issuing operation processing results and the like.

The memory 602 may include a non-volatile computer-readable storage medium, such as at least one magnetic disk storage device, flash memory device, distributed storage device remotely located from the processor 601, or other non-volatile solid state storage device. The memory may have a program storage area for storing non-volatile software programs, non-volatile computer-executable programs, and modules for use by the processor 601 in causing the processor 601 to perform one or more method steps.

The memory 602 may further include a storage portion such as a volatile random access memory medium or a hard disk, which is used as a data storage area for storing the operation processing result and data issued and output by the processor 601. In the embodiment of the present invention, the memory 602 stores computer readable instructions executable by the processor 601 on one hand, and when the computer readable instructions are executed, the processor 601 may execute the fall-off detection method of the wearable device in any one of the following embodiments. On the other hand, the memory 602 may also store data collected by the wear sensor 604 and the acceleration sensor 605.

The wearing sensor 604 has a detection portion for detecting wearing state changes of the wearable device and a corresponding connection circuit, and the detection portion can acquire wearing state change information of the wearable device through changes such as capacitance, voltage, light sensitivity and the like, and the wearing state change information is processed into a wearing signal which can be received by the processor 601 through a subsequent circuit. The wearing signal indicates the wearing state change of the wearable device reflected by the wearing sensor 604, in an exemplary implementation, the wearable device 600 uses a smart watch, the wearing sensor 604 uses a capacitance sensor as an example, the electrode terminal of the capacitance sensor is arranged on the back of the smart watch, so as to detect the capacitance of the human body, when the capacitance value changes, the watch can be determined to leave the human body, that is, the watch is in an unworn state, so as to serve as an initial signal for judging whether the watch really falls off.

The acceleration sensor 605 can be arranged inside the wearable device, the common acceleration sensor is composed of a mass block and a connecting circuit thereof, and when the wearable device falls, the sensor can output an acceleration value by measuring the acceleration force applied to the mass block and utilizing Newton's second law.

It is worth to be noted that, in the test of simulating the falling of the wearable device, the inventor finds that the falling height of the wearable device is low in a general scene, so that the free falling time is extremely short, and the calculation of the device speed and the subsequent response processing cannot be completed within the time of the falling motion in several tests. On the other hand, under the multi-scenario simulation test, the initial falling speed of the wearable device is also different, for example, the initial falling speed of the wearable device in a static state is zero, and the initial falling speed of the wearable device in a moving state is very high, so that the falling detection based on the device speed cannot meet all scenarios. Furthermore, when the falling state is detected by using the speed, when a user manually removes the device, the device is easily in the speed judgment threshold value in the process of playing the device or placing the device, and the device is further judged to fall accidentally, which brings trouble to the user. Therefore, in the embodiment of the present invention, the acceleration sensor 605 is used to detect the acceleration of the device, and the falling-off state is directly detected based on the acceleration of the device, so that on one hand, the judgment logic is simplified, and on the other hand, the judgment result is more accurate, and the falling-off test method of the present invention is described in detail below.

With continued reference to fig. 1, in some embodiments, the wearable device 600 provided by the present invention further comprises an alarm 606 and/or a wireless transmission unit 607. The alarm 606 may be an audible alarm or an optical alarm, and when the processor 601 determines that the wearable device is determined to be detached, the alarm 606 sends an audible/optical alarm according to the received alarm signal, so as to prompt the user that the device is detached.

In other embodiments, the wireless transmission unit 607 is a functional module that can establish a communication connection with the mobile device 700 and provide a physical channel. The wireless transmission unit 607 may be any type of wireless module including, but not limited to, a Wifi module or a bluetooth module. In the embodiment of the present invention, the wireless transmission unit 607 transmits the determined dropping signal transmitted by the processor 601 to the mobile device 700, and the mobile device 700 may be a mobile phone of the user, a tablet, or other device. The wireless transmission unit 607 may work with the alarm 606, or only adopt a certain alarm function, which is not limited in the present invention.

A method of fall-off detection for a wearable device according to some embodiments of the present invention is illustrated in fig. 2. As shown in fig. 2, in some embodiments, the method for detecting detachment of a wearable device provided by the present invention includes:

and S10, acquiring the acceleration of the wearable device when the wearable device is detected to be in the unworn state.

Specifically speaking, whether wearing the preliminary check out test set of sensor through wearable equipment breaks away from the human body, for example gather human electric capacity signal through electric capacity sensor, change when electric capacity signal, can tentatively confirm that equipment has broken away from the human body, is in not wearing the state. For example, when the processor receives an unworn signal transmitted by the wearing sensor, the processor determines that the wearable device is in an unworn state.

However, in various scenarios of the wearable device, it is not possible to determine whether the unworn state is accidentally dropped, whether the user manually removes the wearable device, whether a failure is detected, or other scenarios, and therefore the acceleration of the wearable device is further detected by the acceleration sensor.

Furthermore, it should be noted that, considering that some prior art wearable devices have an acceleration sensor, such as a sports watch or a bracelet, which has functions of lifting a wrist to light a screen, counting steps, and the like, the acceleration sensor is required to detect the motion state of the device at any time. Therefore, in the embodiment of the invention, when the wearable device is detected to be in an unworn state, the acceleration information can be directly acquired from the acceleration sensor, and the acquisition time of the acceleration is greatly saved.

And S20, judging whether the acceleration direction is downward and whether the acceleration value is within the range of a preset threshold value, and if so, executing a step S30.

Specifically, the acceleration sensor is a sensor capable of measuring an acceleration direction and an acceleration value, by which acceleration of the wearable device is detected. For example, after the wearable device falls off, a free-falling body state is generally required for a certain time, and the acceleration sensor can obtain the acceleration direction and magnitude of the device in the movement process through the acceleration force measurement of the self mass block through the adaptation of the connection circuit.

In order to determine whether the device is in a free-fall state, it is necessary that the acceleration direction and magnitude of the device satisfy the free-fall characteristic at the same time, that is, whether the acceleration direction is downward and whether the acceleration value is within a preset threshold range. The preset threshold range can generally adopt a range close to the gravity acceleration g, but for the wearable equipment with different shapes and masses, the preset threshold range of the acceleration of the equipment in the free-falling state can be obtained through a pre-simulation experiment for the equipment which obviously cannot ignore the air resistance in the free-falling process.

When the direction and magnitude of the acceleration collected by the acceleration sensor both satisfy the above conditions, the wearable device may be determined to be in a free-fall state, and step S30 is performed. If one of the acceleration direction and the acceleration magnitude does not satisfy the above condition, the wearable device is considered not to be accidentally dropped, and the operation is not executed or the process returns to step S10.

S30, determining whether the wearable device generates an upward acceleration within a first preset time, if so, executing step S40.

In particular, considering that in the usage scenario of the wearable device, the time of the free fall caused by the accidental drop is short, and the wearable device generally decelerates rapidly after falling to the ground and rebounds with shock, so that an upward acceleration is generated. Meanwhile, under the condition that the wearable device is worn to detect faults, even if the wearable device is not fallen off, the processor can always receive the unworn signal, and in the wearing process of a user, the acceleration of the wearable device can easily meet the free-falling condition in some motion scenes.

In order to avoid the false determination of the drop detection caused by the above-mentioned scene, after determining that the wearable device has undergone a free fall for a very short first preset time, it is determined whether an upward acceleration is generated. The first preset time can be obtained through calculation or a simulation test in advance according to different forms and wearing position heights of the wearable device, for example, for a smart watch or a bracelet, the first preset time can be set to be smaller than the glasses or the earphone device due to the fact that the wearing height of the smart watch or the bracelet is lower than the glasses or the earphone device.

If the device generates an upward acceleration within the first preset time, it is determined that the wearable device is accidentally dropped, and step S40 is executed. If not, the device motion state is not considered to be accidentally dropped, and the processor does not operate or returns to step S20.

And S40, generating a falling confirmation signal for confirming that the wearable device falls off.

Specifically, the processor determines that the wearable device is in the accidental detachment state in step S30, thereby generating a confirmation detachment signal.

In some embodiments, an alarm signal may be generated according to the drop-confirmation signal, the processor sends the alarm signal to the alarm 606, and the alarm 606 receives the alarm signal to issue an alarm to prompt the user equipment to drop.

In other embodiments, processor 601 sends an acknowledge drop signal to mobile device 700 via wireless transmission unit 607. The mobile device 700 may be a mobile phone, a tablet, or the like of a user, and since the attention degree of general people to mobile phone messages is higher, the wearable device is further reminded that the wearable device is detached by sending a detachment signal to the mobile device of the user.

For clarity, the following description of the detection method in the above embodiment is given by way of example with reference to several scenarios:

1) wearable equipment breaks away from the human body, the accident drops, contacts with ground after the short time free fall, and it is static after the bounce is shaken in the speed reduction. At the moment, the wearing sensor firstly detects the change of the human body signal, and the processor controls the acceleration sensor to work. During the free fall, the acceleration sensor detects that the device meets the free fall condition. After the equipment falls freely for a certain time, when the equipment is in contact with the ground for deceleration and is rebounded due to vibration, the acceleration sensor detects that the equipment generates upward acceleration, and the equipment can be confirmed to fall off accidentally.

2) Wearing sensor trouble or user's mode of wearing are improper, lead to wearing the sensor and can't correctly gather the signal that drops, and the user wears wearable equipment and moves under various scenes simultaneously. At the moment, the processor always receives the unworn signal due to the failure of the wearing sensor, and when the user wears the equipment to move, even if the equipment conforms to the condition of free fall along with the motion state of the human body in some scenes, the equipment cannot have upward acceleration within a short first preset time, so that the misjudgment rate can be reduced through the combined judgment of various conditions.

According to the wearable device falling detection method, the misjudgment rate of falling detection is reduced by combining judgment of various conditions, whether the wearable device really falls off accidentally is determined, and the detection accuracy is improved. Meanwhile, the detection method provided by the invention can be used for directly judging whether the wearable device falls off or not through the acceleration of the movement of the device, the judgment is easier to realize and the logic is simpler compared with the judgment of the movement speed, and the device can not do the movement similar to the free falling body when the user manually removes the wearable device to play or place, so that the misjudgment rate is reduced, and the judgment result is more accurate.

Further embodiments of the detection method according to the invention are shown in fig. 3. As shown in fig. 3, in these embodiments, the detection method of the present invention includes:

and S10, detecting the acceleration of the wearable device when the wearable device is detected to be in the unworn state.

And S20, judging whether the acceleration direction is downward and the acceleration value is within the preset threshold range, if so, executing the step S30.

S30, determining whether the wearable device generates an upward acceleration within a first preset time, if so, executing step S31.

Specifically, the specific processes of the steps S10, S20, and S30 can be referred to the description of the above embodiments, and are not repeated herein. In this embodiment, the detection method further includes:

and S31, judging whether the acceleration value of the wearable device is zero within the second preset time, if so, executing the step S40.

Specifically, it is further considered that the wearable device is stationary after a short period of free fall and oscillation in an accidental falling scene, and therefore, on the basis that the above conditions are satisfied, it is further determined whether the acceleration of the wearable device becomes zero within a second preset time. The second preset time may be a duration set according to the structure and characteristics of the device, for example, the duration of the shock rebound of the device in a falling scene is determined through a limited number of falling experiments according to the quality, the material, the size and the like. When the acceleration of the device becomes zero within the second preset time, it can be confirmed that the wearable device is accidentally dropped, and step S40 is executed. If not, no action is performed or the process returns to step S30.

Specifically, refer to the description of step S40 in the above embodiment, and the description thereof is omitted here.

For clarity, the following description will be made by taking several scenarios as examples of the detection method in the present embodiment:

1) wearable equipment drops the human body, and the accident drops, and short duration freely falls after the body with ground contact, it is static after the bounce-back is vibrated in the speed reduction. At the moment, the wearing sensor firstly detects the change of the human body signal, and the processor acquires the acceleration information of the acceleration sensor to work. During the free fall, the acceleration sensor detects that the device meets the free fall condition. After the equipment falls freely for a certain time, when the equipment is in contact with the ground for deceleration and is rebounded due to oscillation, the acceleration sensor detects that the equipment generates upward acceleration, and if the acceleration of the equipment is zero within a certain time, the equipment is considered to be static after falling accidentally.

2) Wearing sensor trouble or user's mode of wearing are improper, lead to wearing the sensor and can't correctly gather the signal that drops, and the user wears wearable equipment and moves under various scenes simultaneously. At this moment, because the wearing sensor is out of order, the processor always receives the signal of not wearing, when the user wears the equipment to move, even under some extreme scenes, the motion state of the equipment along with the human body accords with the condition of free fall, and upward acceleration is generated in the first preset time, however, because the user wears the equipment in the motion state, the general equipment cannot be static in the second preset time, and the acceleration always keeps changing, so that the misjudgment of the scene can be further reduced, and the misjudgment rate is reduced.

According to the detection method provided by the embodiment of the invention, the misjudgment rate of the falling detection is further reduced by combining the judgment of various conditions, whether the wearable device actually falls off accidentally is determined, and the detection accuracy is improved. Meanwhile, the detection method provided by the invention can directly carry out falling judgment through the acceleration of the movement of the equipment, and compared with the movement speed judgment, the judgment is easier to realize, the logic is simpler, and the judgment result is more accurate.

Fig. 4 shows an operation principle of the fall-off detection method of the wearable device according to an embodiment of the present invention. In this embodiment, wearable equipment uses intelligent bracelet as an example, and intelligent bracelet generally includes demountable installation's bracelet main part and wrist strap, and the bracelet main part is very easily separated from the wrist strap under the violent motion scene. Wear the sensor and use capacitive sensor as an example, capacitive sensor's electrode setting is in the one side towards human wrist to after the bracelet is worn to the human body, continuously monitor the capacitance variation.

As shown in fig. 4, in the present embodiment, the detection method of the present invention includes:

s1, the wearable sensor detects whether the wearable device is worn, if yes, the step S2 is executed.

Specifically, for the bracelet illustration of wearing the detection through capacitive sensor, the bracelet is under the wearing state, and human electric capacity signal is continuously monitored to capacitive sensor, and when the bracelet main part fell off, or the user removed the bracelet, or the user worn the skew, or when the sensor trouble, electric capacity signal can change. Thereby performing step S2. If no signal change is detected, no action is performed.

And S2, sending the unworn signal to the processor, and acquiring the acceleration of the equipment detected by the acceleration sensor by the processor.

When the capacitance sensor detects the signal change, the processor receives the signal of not wearing to confirm that the bracelet is in the state of not wearing, and then acquire the bracelet acceleration information that acceleration sensor detected.

And S3, judging whether the acceleration direction is downward and the acceleration value is within the preset threshold range, if so, executing the step S4.

In the embodiment, the acceleration sensor detects the acceleration value and the direction of the device, and the bracelet main body is generally small in size, so that the air resistance can be ignored when the bracelet main body is in free fall, and the preset threshold range can be set to [ g- Δ g, g + Δ g ] according to the gravity acceleration g. And judging whether the acceleration of the equipment is downward or not according to the signals collected by the acceleration sensor, and whether the acceleration value is within the range or not, if so, confirming that the equipment belongs to a free-falling body state, executing step S4, otherwise, not executing the action or returning to step S1.

S4, whether the wearable device generates upward acceleration within the first preset time is judged, and if yes, the step S5 is executed.

In this embodiment, the first preset time may be a time for simulating a bracelet drop test, wherein the obtained bracelet drops from a certain height to the ground, for example, the bracelet drops in a conventional state, and the time for keeping the bracelet dropping is generally 1-2 s, so that the first preset time may be set to 2 s. When the bracelet generates an upward acceleration within 2S, it is determined that the bracelet falls off the ground, and step S5 is performed. If not, no action is performed or return to S1 is made.

And S5, judging whether the acceleration value of the wearable device is zero within the second preset time, if so, executing the step S6.

In this embodiment, the second preset time can be in the experiment that the simulation bracelet falls, the bracelet that obtains is certain highly freely fallen, from the time of touching ground to totally static, for example the bracelet drops under conventional state, because its self is less, the shock of rolling easily, consequently can set up the second preset time longer, for example for 5 s. And when the acceleration value of the bracelet is reduced to zero within 5S, the bracelet is considered to be static after falling to the ground, and the step S6 is executed, and if not, the action is not executed or the step S1 is returned.

And S6, sending a falling confirmation signal to the alarm, and sending an alarm by the alarm.

In the embodiment, the bracelet is determined to be in an accidental falling state through the steps, so that the processor sends a signal to the alarm, and the alarm gives out sound and/or light alarm to remind a user.

It should be noted that this embodiment is merely an illustration of the detection method of the present invention, and does not limit the present invention.

For example, in an alternative embodiment, the wearable device may also be presented in other forms, such as glasses, a watch, and the like, which are not described in detail. The wearing sensor can also be a photosensitive sensor for example, and whether the equipment is separated from the human body or not is judged by detecting a photosensitive signal; for another example, the device is a voltage sensor, and whether the device is separated from the human body is judged through voltage change; still other sensors may be suitably implemented, and the invention is not limited in this regard.

In another alternative embodiment, in step S6, a wireless transmission unit may be used to send a drop confirmation signal to the mobile terminal, so as to remind the user. A combination of the two functions may also be used, as the present invention is not limited in this regard. Those skilled in the art can implement corresponding functions based on the above disclosure, and will not be described herein again.

The embodiment of the invention also provides a detection device of the wearable equipment, which is applicable to any form of wearable equipment. As shown in fig. 5, in some embodiments, the detection device of the present invention comprises:

the acquiring module 10 is configured to acquire an acceleration of the wearable device when it is detected that the wearable device falls off and is in an unworn state;

the first processing module 20 is configured to determine whether the acceleration direction is downward and whether the acceleration value is within a preset threshold range;

the second processing module 30 is configured to determine whether the wearable device generates an upward acceleration within a first preset time when the acceleration direction is downward and the acceleration value is within a preset threshold range; and

and the third processing module 40 is configured to generate a detachment confirmation signal confirming detachment of the wearable device when the wearable device generates an upward acceleration within a first preset time.

The falling detection device of the wearable equipment provided by the invention combines the judgment of various conditions, reduces the misjudgment rate of falling detection, confirms whether the wearable equipment actually falls off accidentally, and improves the detection accuracy. Meanwhile, the detection method provided by the invention can directly carry out falling judgment through the acceleration of the movement of the equipment, and compared with the movement speed judgment, the judgment is easier to realize, the logic is simpler, and the judgment result is more accurate.

FIG. 6 illustrates a block diagram schematic of a third processing module in some embodiments according to the invention. In some embodiments, the third processing module 40 comprises:

a determining unit 41, configured to determine whether an acceleration value of the wearable device is zero within a second preset time when the wearable device generates an upward acceleration within a first preset time; and

and the generating unit 42 is configured to generate a detachment confirmation signal for confirming that the wearable device is detached when the acceleration value of the wearable device is zero within the second preset time.

In some embodiments, the invention provides a wearable device detachment detection apparatus, further comprising:

and the fourth processing module is used for determining that the wearable device is in an unworn state when an unworn signal for representing that the wearable device falls off is received.

According to the falling detection device for the wearable equipment, after the wearable equipment is judged to generate the upward acceleration within the first preset time, whether the acceleration value of the wearable equipment is zero within the second preset time is further judged, if yes, the wearable equipment is determined to enter a static state after falling to the ground, decelerating and rebounding or bumping, so that the wearable equipment is determined to really fall off, and the falling detection accuracy is further improved.

The present invention also provides a storage medium storing computer-readable instructions for causing a computer to execute the method for detecting detachment of a wearable device according to any of the embodiments. The corresponding functions of the storage medium can be implemented by referring to the wearable device in fig. 1, and are not described herein again.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It should be understood that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A method for detecting detachment of a wearable device, comprising:

when the wearable device is detected to be in an unworn state through a wearing sensor arranged on the wearable device, acquiring the acceleration of the wearable device;

2. The detachment detection method according to claim 1, wherein generating a detachment confirmation signal confirming detachment of the wearable device when the wearable device generates an upward acceleration within a first preset time includes:

3. The detachment detection method according to claim 1 or 2, further comprising, after the generating a detachment confirmation signal confirming detachment of the wearable device:

And sending the falling confirmation signal to the mobile equipment.

4. The fall detection method according to claim 1, wherein the acquiring an acceleration of the wearable device when the wearable device is detected to be in an unworn state by a wearable sensor provided on the wearable device includes:

5. The dropout detection method of claim 4 wherein said unworn signal comprises at least one of:

capacitance change signal, voltage change signal, photosensitive change signal.

6. A wearable device, comprising:

a wear sensor to generate an unworn signal that the wearable device is dropped;

an acceleration sensor to detect acceleration of the wearable device; and

a controller comprising a processor and a memory communicatively coupled to the processor, storing computer readable instructions executable by the processor, the processor performing the fall-off detection method of the wearable device of any of claims 1 to 5 when the computer readable instructions are executed.

7. The wearable device of claim 6, wherein the wear sensor comprises at least one of:

capacitive sensor, voltage sensor, photosensitive sensor.

8. The wearable device of claim 6, further comprising:

9. A wearable equipment's detection device that drops characterized in that includes:

the wearable device comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring the acceleration of the wearable device when the wearable device is detected to be in an unworn state through a wearing sensor arranged on the wearable device;

10. The dropout detection apparatus according to claim 9, wherein said third processing module comprises:

11. The dropout detection apparatus of claim 9 further comprising:

12. A storage medium storing computer-readable instructions for causing a computer to execute the method for detecting detachment of a wearable device according to any one of claims 1 to 5.