CN105698815A - Method and device for adjusting pedometer data - Google Patents

Abstract

The invention provides a method and a device for adjusting step counting data, wherein the method for adjusting the step counting data comprises the following steps: when the acceleration of the terminal is detected to be larger than a preset gait detection threshold value, acquiring the average acceleration of the terminal in a preset direction within a preset duration; calculating an acceleration absolute value according to the average acceleration; judging whether the absolute value of the acceleration is smaller than the preset gait detection threshold value or not; if the acceleration absolute value is judged to be smaller than the preset gait detection threshold value, adjusting the preset gait detection threshold value to obtain an adjusted gait detection threshold value so as to enable the adjusted gait detection threshold value to be matched with the acceleration absolute value; replacing the preset gait detection threshold with the adjusted gait detection threshold. The method and the device for adjusting the step counting data can adaptively adjust the gait detection threshold when the walking jitter amplitude of the user is small, prevent the condition of missed detection and improve the detection accuracy.

Description

Method and device for adjusting pedometer data

technical field

The invention relates to the technical field of terminals, in particular to a method and device for adjusting step counting data.

Background technique

With the continuous development of terminals, there are more and more terminal-based sports applications, which improves the fun of sports for users.

For example, take the walking detection software as an example. It judges whether the user is walking by detecting the shaking of the mobile phone to count the number of steps the user has taken. Specifically, when the shaking of the mobile phone is detected by the pedometer, if the shaking of the mobile phone exceeds a certain threshold, the terminal It is determined that the user is walking, otherwise it is determined that the user is not walking. However, the current walking detection software uses a fixed threshold for statistical walking, that is, uses the same judgment standard. Since everyone's physical condition is different, as well as exercise habits, and the severity of walking steps are also different, the amount of vibration that triggers the terminal is different. For example, if some people walk faster, the amount of jitter detected by the pedometer is relatively large, and if some people walk slowly, the amount of jitter detected by the pedometer will be relatively small. It can be seen that using this fixed threshold pedometer This method is easy to miss the number of steps, resulting in inaccurate counting.

Contents of the invention

The embodiment of the present invention provides a step counting data adjustment method and device to solve the technical problems of the existing step counting method, which is easy to miss the number of steps and has low accuracy.

In order to solve the above problems, the technical solutions provided by the present invention are as follows:

An embodiment of the present invention provides a method for adjusting step counting data, which includes:

When it is detected that the acceleration of the terminal is greater than a preset gait detection threshold, acquiring the average acceleration of the terminal in a preset direction within a preset time period;

calculating an absolute value of acceleration according to the average acceleration;

judging whether the absolute value of the acceleration is less than the preset gait detection threshold;

If it is determined that the absolute value of the acceleration is less than the preset gait detection threshold, the preset gait detection threshold is adjusted to obtain an adjusted gait detection threshold, so that the adjusted gait detection threshold is equal to the acceleration Absolute value matches;

The preset gait detection threshold is replaced by the adjusted gait detection threshold.

The embodiment of the present invention also provides a device for adjusting step counting data, which includes:

An acquisition module, configured to acquire the average acceleration of the terminal in a preset direction within a preset time period when it is detected that the acceleration of the terminal is greater than a preset gait detection threshold;

Calculation module, for calculating the absolute value of acceleration according to the average acceleration;

A judging module, configured to judge whether the absolute value of the acceleration is less than the preset gait detection threshold;

An adjustment module, configured to adjust the preset gait detection threshold to obtain an adjusted gait detection threshold when the judging module determines that the absolute value of the acceleration is less than the preset gait detection threshold, so that the Adjusting the gait detection threshold to match the absolute value of the acceleration;

A replacement module, configured to use the adjusted gait detection threshold to replace the preset gait detection threshold.

Compared with the prior art, the step counting data adjustment method and device of this embodiment, when it is detected that the acceleration of the terminal is greater than the preset gait detection threshold, obtain the average acceleration of the terminal in the preset direction within the preset time length ; Calculate the absolute value of the acceleration according to the average acceleration; judge whether the absolute value of the acceleration is less than the preset gait detection threshold; if it is determined that the absolute value of the acceleration is less than the preset gait detection threshold, perform Adjust to obtain the adjusted gait detection threshold; and use the adjusted gait detection threshold to replace the preset gait detection threshold; since the average acceleration of the terminal is obtained when the user is walking is detected, the preset gait detection is performed according to the average acceleration The threshold value is adjusted, so that the gait detection threshold can be adaptively adjusted when the user's gait jitter amplitude is relatively small, so as to prevent missed detection and improve detection accuracy.

Description of drawings

Fig. 1 is the flow chart of the step counting data adjustment method provided by Embodiment 1 of the present invention;

Fig. 2 is a flow chart of the step counting data adjustment method provided by Embodiment 2 of the present invention;

Fig. 3 is a flow chart of the step counting data adjustment method provided by Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a device for adjusting step counting data provided by Embodiment 4 of the present invention;

FIG. 5 is a schematic diagram of a preferred structure of the device for adjusting step counting data provided by Embodiment 4 of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1 . FIG. 1 is a flowchart of a step counting data adjustment method provided by Embodiment 1 of the present invention.

The adjustment method of the step counting data of this preferred embodiment includes:

Step S101, when it is detected that the acceleration of the terminal is greater than a preset gait detection threshold, obtain the average acceleration of the terminal in a preset direction within a preset time period.

For example, when the acceleration of the terminal exceeds the preset gait detection threshold, the terminal detects that the user is walking. At this time, the acceleration sensor detects the acceleration of the terminal in the three directions of x, y, and z relative to the static state within the preset time period. value, and calculate the acceleration averages a _x , a _y , a _z of the x-axis, y-axis, and z-axis; the terminal can be a mobile phone, a tablet computer and other devices.

Step S102, calculating the absolute value of acceleration according to the average acceleration.

For example, the terminal calculates the absolute value of acceleration a _m according to the average acceleration values a _x , a _y , and a _z of the x-axis, y-axis, and z-axis. For example, the absolute value of the acceleration is shown in Formula 1:

Step S103, judging whether the absolute value of the acceleration is smaller than the preset gait detection threshold.

For example, the terminal stores a preset gait detection threshold in the preset database, and the terminal judges whether the absolute value of the acceleration is less than the preset gait detection threshold, and if the terminal judges that the absolute value of the acceleration is greater than or equal to the preset gait detection threshold, it indicates that the user If the average walking jitter range is too large, the gait detection threshold preset by the reaction terminal is appropriate and can meet the accuracy of the detection steps, so the preset gait detection threshold is not adjusted; if the terminal judges that the absolute value of the acceleration is less than the If the gait detection threshold is preset, step S104 is executed.

Step S104, if it is determined that the absolute value of the acceleration is smaller than the preset gait detection threshold, adjust the preset gait detection threshold to obtain an adjusted gait detection threshold.

For example, when the terminal judges that the absolute value of the acceleration is less than the preset gait detection threshold, it indicates that the user's average walking jitter is too small, so it reflects that the gait detection threshold preset by the current terminal is inappropriate, which may easily cause missed steps Case. For example, at this time, the terminal reduces the current preset gait detection threshold, and uses the reduced preset gait detection threshold as the adjusted gait detection threshold, so that the adjusted gait detection threshold matches the absolute value of the acceleration , that is, to adjust the gait detection threshold to match the user's walking vibration amplitude to prevent missing steps.

Step S105, using the adjusted gait detection threshold to replace the preset gait detection threshold.

For example, the terminal uses the adjusted gait detection threshold as the basis for counting during subsequent step counting, that is, when the terminal detects that the acceleration is greater than the adjusted gait detection threshold, it indicates that the user is walking, thereby triggering the pedometer to count.

The method for adjusting the pedometer data in this preferred embodiment, since the average acceleration of the terminal in the preset direction within the preset time length is obtained when the user is walking is detected, and the absolute value of the acceleration is obtained, and it is judged whether the absolute value of the acceleration is less than the preset step If so, adjust the preset gait detection threshold, and count according to the adjusted gait detection threshold, so that when the user's walking jitter amplitude is small, the gait detection threshold can be adaptively adjusted to prevent missing steps It can improve the detection accuracy.

Please refer to FIG. 2 . FIG. 2 is a flowchart of a step counting data adjustment method provided by Embodiment 2 of the present invention.

The adjustment method of the step counting data of this preferred embodiment includes:

Step S201, when it is detected that the acceleration of the terminal is greater than a preset gait detection threshold, acquire the average acceleration of the terminal in a preset direction within a preset time period.

For example, when the acceleration of the terminal exceeds the preset gait detection threshold, the terminal detects that the user is walking. At this time, the acceleration sensor detects the acceleration of the terminal in the three directions of x, y, and z relative to the static state within the preset time period. value, and calculate the acceleration averages a _x , a _y , a _z of the x-axis, y-axis, and z-axis; the terminal can be a mobile phone, a tablet computer and other devices.

Step S202, calculating the absolute value of acceleration according to the average acceleration.

For example, the terminal calculates the absolute value of acceleration a _m according to the average acceleration values a _x , a _y , and a _z of the x-axis, y-axis, and z-axis. For example, the absolute value of the acceleration is shown in Formula 1:

Step S203, judging whether the absolute value of the acceleration is smaller than the preset gait detection threshold.

For example, the terminal stores a preset gait detection threshold in the preset database, and the terminal judges whether the absolute value of the acceleration is less than the preset gait detection threshold, and if the terminal judges that the absolute value of the acceleration is greater than or equal to the preset gait detection threshold, execute In step S204, if the terminal determines that the absolute value of the acceleration is less than the preset gait detection threshold, step S205 is executed.

Step S204, if it is determined that the absolute value of the acceleration is greater than or equal to the preset gait detection threshold, no processing is performed.

For example, when the terminal judges that the absolute value of the acceleration is greater than or equal to the preset gait detection threshold, it indicates that the user's average walking jitter is too large, and it reflects that the gait detection threshold preset by the current terminal is appropriate and can meet the detection steps. accuracy, so the preset gait detection threshold is not adjusted.

Step S205, if it is determined that the absolute value of the acceleration is less than the preset gait detection threshold, adjust the preset gait detection threshold to obtain an adjusted gait detection threshold.

For example, when the terminal judges that the absolute value of the acceleration is less than the preset gait detection threshold, it indicates that the user's average walking jitter is relatively small, so the response terminal preset gait detection threshold is inappropriate, which may easily lead to missing steps. In this case, the terminal reduces the current preset gait detection threshold, and uses the reduced preset gait detection threshold as the adjusted gait detection threshold.

In order to improve the accuracy of the adjustment, the adjustment factor can be calculated according to the absolute value of the acceleration, that is, the preset gait detection threshold should be adjusted, and the steps for obtaining the adjusted gait detection threshold include:

A. Obtain the adjustment factor according to the absolute value of the acceleration;

For example, the terminal may store multiple intervals of the absolute value of acceleration in the preset database, and an adjustment factor corresponding to each interval. The adjustment factor is, for example, a decimal greater than 0 and less than 1, and the terminal searches for the interval corresponding to the absolute value of the acceleration. interval, and use the adjustment factor corresponding to the interval as the final adjustment factor; of course, in order to improve the search efficiency, the step of obtaining the adjustment factor according to the absolute value of the acceleration includes:

a1. Calculate the difference between the absolute value of the acceleration and the preset gait detection threshold;

a2. Obtain the adjustment factor according to the difference.

For example, the terminal stores a plurality of preset difference values and adjustment factors corresponding to each difference value in advance in the preset database, and when the terminal obtains the difference between the absolute value of the acceleration and the preset gait detection threshold, the The preset difference corresponding to the difference, and the adjustment factor corresponding to the preset difference is used as the final adjustment factor.

Of course, in order to reduce the power consumption of the terminal, the step of obtaining the adjustment factor according to the absolute value of the acceleration includes:

a3. Find the adjustment factor corresponding to the absolute value of the acceleration in the preset database.

For example, the terminal stores a plurality of preset accelerations and adjustment factors corresponding to each preset acceleration in the preset database in advance, the terminal obtains the preset acceleration corresponding to the absolute value of the acceleration, and uses the adjustment factor corresponding to the preset acceleration as The final adjustment factor.

B. Adjust the preset gait detection threshold according to the adjustment factor to obtain the adjusted gait detection threshold.

For example, the preset gait detection threshold is multiplied by the adjustment factor to obtain the adjusted gait detection threshold.

Of course, in order to improve the processing efficiency of the terminal, the preset gait detection threshold should be adjusted, and the step of obtaining the adjusted gait detection threshold includes:

(1) Obtain the adjustment parameter corresponding to the absolute value of the acceleration;

(2) Adjust the preset adjustment base according to the adjustment parameter, and use the adjusted preset adjustment base as the adjusted gait detection threshold.

For example, the terminal stores a preset adjustment base, multiple preset accelerations, and adjustment parameters corresponding to each preset acceleration in the preset database, and the terminal obtains the preset acceleration whose absolute value of the acceleration matches, and stores the corresponding preset acceleration tuning parameters as the final tuning parameters. For example, the terminal multiplies the adjustment parameter by a preset adjustment base, and the preset adjustment base is, for example, smaller than a preset gait detection threshold.

Step S206, using the adjusted gait detection threshold to replace the preset gait detection threshold.

For example, the terminal uses the adjusted gait detection threshold as the basis for counting during subsequent step counting, that is, when the terminal detects that the acceleration is greater than the adjusted gait detection threshold, it indicates that the user is walking, thereby triggering the pedometer to count.

The method for adjusting the pedometer data in this preferred embodiment, since the average acceleration of the terminal in the preset direction within the preset time length is obtained when the user is walking is detected, and the absolute value of the acceleration is obtained, and it is judged whether the absolute value of the acceleration is less than the preset step If not, do not adjust the preset gait detection threshold; , adaptively reduce the threshold of gait detection, prevent the missed detection of steps, and improve the accuracy of detection.

Please refer to FIG. 3 . FIG. 3 is a flow chart of a step counting data adjustment method provided by Embodiment 3 of the present invention.

This embodiment takes the terminal as a smart phone as an example to describe in detail. The method for adjusting step counting data in this preferred embodiment includes:

Step S301, when the smart phone detects that its acceleration is greater than a preset gait detection threshold, acquire the average acceleration of the smart phone in a preset direction within a preset time period.

For example, when the amount of shaking of the smart phone exceeds the preset gait detection threshold, the smart phone detects that the user is walking. At this time, the acceleration sensor detects that the smart phone is relatively stationary in the three directions of x, y, and z within a preset time period. state, and calculate the average acceleration values ax, ay, and az of the x-axis, y-axis, and z-axis. For example, the preset gait detection threshold is, for example, 450 mg.

Step S302, the smart phone calculates the absolute value of the acceleration according to the average acceleration.

For example, the smart phone calculates the absolute value of acceleration a _m according to the average acceleration values ax, ay, and az of the x-axis, y-axis, and z-axis. For example, the absolute value of the acceleration is shown in Formula 1:

Step S303, the smart phone judges whether the absolute value of the acceleration is smaller than the preset gait detection threshold.

For example, the smart phone stores a preset gait detection threshold in the preset database, and the smart phone judges whether the absolute value of the acceleration is less than the preset gait detection threshold, and if the smart phone judges that the absolute value of the acceleration is greater than or equal to the preset gait detection threshold , it indicates that the user's steps will often trigger the pedometer, so the preset gait detection threshold is not adjusted. If the smartphone judges that the absolute value of acceleration is less than the preset gait detection threshold, it indicates that the user's steps cannot trigger the pedometer. stepper, execute step S304.

Step S304, if the smartphone determines that the absolute value of the acceleration is less than the preset gait detection threshold, acquire an adjustment parameter corresponding to the absolute value of the acceleration.

For example, the smart phone stores preset adjustment bases, multiple preset accelerations, and adjustment parameters corresponding to each preset acceleration in the preset database, and the smart phone obtains the preset acceleration whose absolute value of the acceleration matches, and stores the preset acceleration The corresponding adjustment parameters are used as the final adjustment parameters.

For example, when the preset acceleration is 400mg, the corresponding adjustment parameter is 12; when the preset acceleration is 350mg, the corresponding adjustment parameter is 10.

Step S305, the smart phone adjusts the preset adjustment base according to the adjustment parameter, and uses the adjusted preset adjustment base as the adjusted gait detection threshold.

For example, the preset adjustment base is, for example, the minimum threshold adjustment unit, and the minimum threshold adjustment unit is, for example, 32 mg. For example, when the absolute value of the acceleration is 350 mg, the obtained adjustment parameter is 10, and the smart phone multiplies the adjustment parameter by the minimum threshold adjustment unit to obtain the adjusted gait detection threshold, that is, 32 mg*10, and the adjusted gait detection threshold is 320 mg.

Step S306, the smartphone uses the adjusted gait detection threshold to replace the preset gait detection threshold.

For example, the smart phone uses the adjusted gait detection threshold as the basis for counting when counting steps. That is, when the smart phone detects that the acceleration is greater than 320mg, it indicates that the user is walking and triggers the pedometer to count.

The adjustment method of the pedometer data in this preferred embodiment, since the smartphone detects that the user is walking, obtains the average acceleration of the smartphone in the preset direction within the preset duration, and obtains the absolute value of the acceleration, and judges whether the absolute value of the acceleration is less than Preset the gait detection threshold, if yes, obtain the adjustment parameter, adjust the preset adjustment base according to the adjustment parameter, and use the adjusted preset adjustment base for counting, so that when the user's walking jitter amplitude is too small, automatic Adaptively adjust the gait detection threshold to prevent missed detection and improve detection accuracy.

Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of a device for adjusting step counting data provided by Embodiment 4 of the present invention. The adjusting device 40 of the pedometer data in this preferred embodiment includes: an acquisition module 41, a calculation module 42, a judgment module 43, an adjustment module 44, and a replacement module 45;

An acquisition module 41, configured to acquire an average acceleration of the terminal in a preset direction within a preset time period when it is detected that the acceleration of the terminal is greater than a preset gait detection threshold;

Calculation module 42, for calculating the absolute value of acceleration according to the average acceleration;

A judging module 43, configured to judge whether the absolute value of the acceleration is less than the preset gait detection threshold;

The adjustment module 44 is used to adjust the preset gait detection threshold when the judgment module 43 judges that the absolute value of the acceleration is less than the preset gait detection threshold, so as to obtain the adjusted gait detection threshold, so that the adjusted gait detection The threshold is matched to the absolute value of the acceleration;

A replacement module 45, configured to use the adjusted gait detection threshold to replace the preset gait detection threshold.

As shown in Figure 5, the adjustment module 44 includes: a first acquisition sub-module 441 and a first adjustment sub-module 442;

The first obtaining sub-module 441 is used to obtain the adjustment factor according to the absolute value of the acceleration;

The first adjustment sub-module 442 is configured to adjust the preset gait detection threshold according to the adjustment factor to obtain the adjusted gait detection threshold.

The first acquiring submodule 441 is specifically used for:

calculating the difference between the absolute value of the acceleration and the preset gait detection threshold;

The adjustment factor is obtained according to the difference.

The first acquisition submodule 441 is also used for:

Look up the adjustment factor corresponding to the absolute value of the acceleration in the preset database.

The adjustment module 44 also includes: a second acquisition submodule 443 and a second adjustment submodule 444;

The second acquiring submodule 443 is configured to acquire an adjustment parameter corresponding to the absolute value of the acceleration;

The second adjustment sub-module 444 is configured to adjust the preset adjustment base according to the adjustment parameter, and use the adjusted preset adjustment base as the adjusted gait detection threshold.

During specific implementation, each of the above modules may be implemented as an independent entity, or may be combined arbitrarily as the same or several entities. For the specific implementation of each of the above modules, please refer to the previous method embodiments, which will not be repeated here.

The device for adjusting the pedometer data in this preferred embodiment obtains the average acceleration of the terminal in the preset direction within the preset duration when the user is walking, and obtains the absolute value of the acceleration to determine whether the absolute value of the acceleration is less than the preset step If so, adjust the preset gait detection threshold and count according to the adjusted gait detection threshold, so that the gait detection threshold can be adaptively adjusted when the user's walking jitter amplitude is too small to prevent the number of steps In the case of missing detection, the detection accuracy is improved.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Read-only memory (ROM, ReadOnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disk or optical disk, etc.

The method and device for adjusting pedometer data provided by the embodiment of the present invention have been introduced in detail above. The principles and implementation methods of the present invention have been explained by using specific examples in this paper. The description of the above embodiments is only used to help Understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation of the invention.

Claims (10)

1. A method for adjusting step counting data, comprising: When it is detected that the acceleration of the terminal is greater than a preset gait detection threshold, acquiring the average acceleration of the terminal in a preset direction within a preset time period; calculating an absolute value of acceleration according to the average acceleration; judging whether the absolute value of the acceleration is less than the preset gait detection threshold; If it is determined that the absolute value of the acceleration is less than the preset gait detection threshold, the preset gait detection threshold is adjusted to obtain an adjusted gait detection threshold, so that the adjusted gait detection threshold is equal to the acceleration Absolute value matches; The preset gait detection threshold is replaced by the adjusted gait detection threshold. 2. the adjustment method of step counting data according to claim 1, is characterized in that, The step of adjusting the preset gait detection threshold to obtain the adjusted gait detection threshold includes: Acquiring an adjustment factor according to the absolute value of the acceleration; The preset gait detection threshold is adjusted according to the adjustment factor to obtain the adjusted gait detection threshold. 3. the adjustment method of step counting data according to claim 2, is characterized in that, The step of obtaining the adjustment factor according to the absolute value of the acceleration includes: calculating the difference between the absolute value of the acceleration and the preset gait detection threshold; The adjustment factor is acquired according to the difference. 4. the adjustment method of pedometer data according to claim 2, is characterized in that, described step that obtains adjustment factor according to described acceleration absolute value comprises: The adjustment factor corresponding to the absolute value of the acceleration is searched in a preset database. 5. the adjustment method of pedometer data according to claim 1, is characterized in that, described preset gait detection threshold value is adjusted, obtains the step of adjusting gait detection threshold value and comprises: Obtain an adjustment parameter corresponding to the absolute value of the acceleration; The preset adjustment base is adjusted according to the adjustment parameter, and the adjusted preset adjustment base is used as the adjusted gait detection threshold. 6. A device for adjusting step counting data, characterized in that it comprises: An acquisition module, configured to acquire the average acceleration of the terminal in a preset direction within a preset time period when it is detected that the acceleration of the terminal is greater than a preset gait detection threshold; Calculation module, for calculating the absolute value of acceleration according to the average acceleration; A judging module, configured to judge whether the absolute value of the acceleration is less than the preset gait detection threshold; An adjustment module, configured to adjust the preset gait detection threshold to obtain an adjusted gait detection threshold when the judging module determines that the absolute value of the acceleration is less than the preset gait detection threshold, so that the Adjusting the gait detection threshold to match the absolute value of the acceleration; A replacement module, configured to use the adjusted gait detection threshold to replace the preset gait detection threshold. 7. the adjusting device of step counting data according to claim 6, is characterized in that, The adjustment module includes: The first obtaining submodule is used to obtain the adjustment factor according to the absolute value of the acceleration; The first adjustment sub-module is configured to adjust the preset gait detection threshold according to the adjustment factor to obtain the adjusted gait detection threshold. 8. the adjusting device of step counting data according to claim 7, is characterized in that, The first acquisition submodule is specifically used for: calculating the difference between the absolute value of the acceleration and the preset gait detection threshold; The adjustment factor is acquired according to the difference. 9. the adjusting device of step counting data according to claim 7, is characterized in that, described first acquisition submodule is also used for: The adjustment factor corresponding to the absolute value of the acceleration is searched in a preset database. 10. The regulating device of step counting data according to claim 6, is characterized in that, described regulating module also comprises: The second obtaining submodule is used to obtain the adjustment parameter corresponding to the absolute value of the acceleration; The second adjustment sub-module is configured to adjust the preset adjustment base according to the adjustment parameters, and use the adjusted preset adjustment base as the adjusted gait detection threshold.