KR20190114517A - Locating method and system for providing location-based services with reduced battery consumption - Google Patents

Abstract

Disclosed is a location confirmation method with reduced battery consumption for providing a location-based service. According to the present invention, the method detecting a user′s gait to confirm a user′s location comprises: a step (a) of activating an acceleration sensor unit mounted in a mobile terminal to generate an acceleration signal; a step (b) of filtering a generated acceleration signal value through a low-pass filter to detect the user′s gait; a step (c) of cumulatively counting the number of gaits when the gait is detected in the step (b); a step (d) of comparing the cumulatively counted number of gaits with the reference location confirmation number of gaits for confirming current user location; a step (e) of confirming the current user location through wireless location information when the cumulatively counted number of gaits is greater than the reference location confirmation number of gaits based on a comparison result of the step (d); and a step (f) of informing the user of location-based content when the confirmed current user location approaches a service registration location in a location-based service area. Accordingly, the method passes processes of detecting the real gait of the user, comparing the cumulatively counted number of gaits with the reference location confirmation number of gaits for confirming the location, and receiving wireless information based on a comparison result to confirm the user location, thereby maximally reducing unnecessary battery consumption in a mobile terminal.

Description

LOCATION METHOD AND SYSTEM FOR PROVIDING LOCATION-BASED SERVICES WITH REDUCED BATTERY CONSUMPTION}

The present invention relates to a method and system for locating a user, and more particularly, to minimize battery consumption of a terminal when a user uses a location-based service based on the user's location through wireless information reception using a mobile terminal. The present invention relates to a location checking method and system for providing location-based services with reduced battery consumption.

In general, in order to use a location-based service that provides information (contents, coupons, events, etc.) corresponding to a location when it is close to a specific point (registration point), a location determination process for determining that the specific point is close to need.

In order to confirm the location, the neighboring wireless information is scanned (collected) and the location is calculated. In this process, the battery of the terminal (smartphone) is consumed. Because of battery drainage, users are more likely to reject location-based services. Therefore, there is a need for reducing terminal objection to the location-based service by minimizing battery consumption.

Currently, the user location checking interval (location time interval) for location-based services is provided by setting a fixed time. As a result, even when the user is in place, the location is checked without the need for unnecessary battery consumption.

To compensate for this, a method of determining the position when the movement is detected by determining the movement of the terminal when the acceleration value is above a certain level by using the acceleration sensor is applied.

However, this method has a problem in that it is unnecessary to check the position even when the user tilts or moves the terminal while the user stops it.

The present applicant proposes a technology that can prevent unnecessary battery consumption of the terminal by detecting the user's steps and determining whether the user has walked more than a certain amount based on the detection result to receive and confirm the location of the wireless information.

Republic of Korea Patent Publication No. 10-2018-0024684 (published Mar. 8, 2018)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to reduce unnecessary battery consumption of a mobile device as much as possible in determining whether a user is close to a specific point in order to obtain various event information of a location-based service. An object of the present invention is to provide a location checking method and system for providing location-based services which can reduce battery consumption.

According to an aspect of the present invention, a method for detecting a user's position by detecting a user's step, comprising: (a) detecting an acceleration using an acceleration sensor unit mounted in a terminal; (b) filtering the detected acceleration value through a low pass filter to detect a user's step; (c) accumulating the number of steps when the step is detected in step (b); (d) comparing the cumulative counting steps with the positioning reference steps for checking the current location of the user; (e) checking the current location of the user through the wireless location information when the cumulative counting step is greater than or equal to the positioning reference step as a result of the comparison in step (d); And (f) if it is determined that the identified current location of the user is within the location-based service area, a location-based method for providing location-based services with reduced battery consumption is provided.

The positioning reference step may be derived through the following equation.

Where Nr is the location criterion

Rr is based on the distance traveled by multiple users in the location-based service area,

Sr is based on the stride length of many users,

E (R) is the average distance traveled by multiple users in the location-based service area,

σ (R) is the standard deviation of moving distance of multiple users in the location-based service area,

E (S) is the stride average for many users,

σ (S) is the stride standard deviation of many users,

n and m are correction coefficients.

Here, n and m may be variably selected from a numerical range of -2 to 2 depending on the importance of location-based services.

When the current position of the user is confirmed in the step (e), the cumulative counting step may be reset to zero.

According to another aspect of the invention, the acceleration signal generating unit mounted on the mobile terminal for generating an acceleration signal; A step detector detecting a user step by filtering the acceleration signal; A step counting unit that accumulates and counts user steps; A comparison operation unit which compares the accumulated counting step count calculated by the step counting unit with a positioning reference step number for determining the position of the user; And a control unit for notifying the user of the location-based content by receiving the comparison result of the comparison operation unit.

According to the positioning method and system for providing the location-based service of reducing the battery consumption of the present invention described above, the actual step of the user is detected and the cumulative counted number of steps compared with the location reference step for positioning And, by receiving the wireless information based on the comparison result and confirming the location of the user can reduce the unnecessary battery consumption of the mobile terminal as much as possible.

By positioning based on the number of steps of positioning, the position is checked by comparing with the counting cumulative number of steps. Can be easily checked, further reducing battery consumption.

In addition, by applying an appropriate correction coefficient when setting the location reference step, it is possible to variably adjust the battery consumption and the user's location detection probability according to the importance of the location-based service.

1 is a block diagram showing a main configuration of a location system for providing a location-based service with reduced battery consumption according to an embodiment of the present invention.
2 is a flowchart illustrating a location checking method for providing a location-based service with reduced battery consumption according to an exemplary embodiment of the present invention.
3 illustrates a signal obtained by filtering an accelerometer output signal through a low pass filter.
FIG. 4 is a diagram illustrating a user moving path and a service registration location in a location-based service area in a location determining method for location-based service providing reduced battery consumption according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. Like numbers refer to like elements in the figures.

In a location determination method (hereinafter, referred to as a 'location method') for providing a location-based service that reduces battery consumption according to an exemplary embodiment of the present invention, a terminal user such as a smartphone or a tablet PC may use various contents of a location-based service. It is possible to reduce the battery consumption of the mobile terminal as much as possible in determining whether the registration point (location specified by the service provider) is close to obtain information (event information). There is an advantage that can resolve the user's rejection for a certain time.

Here, the location-based service is to provide a variety of information when the user is located in the service area by detecting the location of the user, for example, a map service, a coupon providing service, a variety of content providing services, buildings, stores, products applied to augmented reality Various information such as purchase / confirmation and event information on SNS such as Facebook or Instagram can be provided to the user.

Hereinafter, the present invention will be described in detail with reference to Examples.

First, FIG. 1 shows a schematic configuration of a system for confirming a location of a user by detecting a user's step.

Positioning system according to an embodiment of the present invention, the acceleration signal generating unit 100 mounted on the mobile terminal to generate an acceleration signal, the step detection unit 200 for filtering the acceleration signal to detect the user's steps, accumulate the user's steps Step counting unit 300 to count the number of steps, the comparison counting step calculated by the step counting unit 300 and the comparison calculation unit 400 for comparing the location reference step number for the user's location check, the comparison operation unit 400 The control unit 500 receives the comparison result of the user to check the location of the user and informs the user of the location-based content when the user is near the registered location. Details of the functions and interactions of the above components will be replaced by the following method descriptions.

As shown in FIG. 2, the positioning method according to an exemplary embodiment of the present invention is a method of detecting a user's step and confirming a user's location, including an acceleration signal generation step S100 and a user step detection step S300. The step counting counting step S400, the step comparing step S500, the current location checking step S600, and the content notification step S800 are included.

First, in order to start the location-based service, the user activates the acceleration sensor unit 100 mounted in the mobile terminal to detect the movement of the mobile terminal, so that the acceleration sensor unit 100 generates the acceleration signal (S100). ). That is, when the user touches the menu of the mobile terminal to activate the acceleration sensor unit 100 in step S100, the acceleration sensor unit 100 generates an acceleration signal according to the tilt or movement of the mobile terminal in a three-dimensional space.

Next, the step detection unit 200 receives the x, y, z three-axis acceleration values measured by the acceleration sensor unit 100 activated in step S100 (S200).

Subsequently, the step detector 200 filters the acceleration signal value received through the step S200 through a low pass filter to detect the user's step (S300).

In other words, the present invention restricts the user's location process due to the acceleration signal generated by the movement of the mobile terminal when the mobile terminal is used while the user is in place. That is, as will be described again below, the present invention solves the user's rejection of the location service by minimizing battery consumption by applying a process in which the positioning process is performed only after the user walks a predetermined step while actually moving. can do.

Hereinafter, a process of detecting and determining whether the user moves or actually moves the mobile terminal from the current stop state by using the low pass filter will be briefly described.

As shown in FIG. 3, the acceleration output signal of the terminal during walking has a lot of noise components, making it difficult to detect a step. When the low pass filter is used, the noise component is removed to obtain a curved curve signal. The moment when the signal passes the reference point (zero value) is determined as the stop state, and the remaining section is determined as the step state. . Usually, chip-type accelerometers are very precise and can detect even minute changes in addition to steps. Therefore, since the user's gait is usually about 2 to 3 times per second, only the data related to the gait can be extracted by passing the data only through a low frequency band of several Hz.

) 에 대해 다음의 조건들을 만족할 경우 하나의 걸음으로 판단하게 된다.The extracted data has a graph form similar to the sin function and has a size value (scalar,

) Is determined as one step if the following conditions are met.

(1) Peak points in the form of high peak-low peak-high peak exist within a certain interval, (2) be within the range specified for the interval between each peak of item 1, and (3) each peak value is within the designated value range. If (4) the above conditions are met, the gait occurs at the first peak point, (5) the second high peak value is used again for the first high peak of the next step, and (6) In this case, there may not be a second high peak, so in this case, only the first high and low peak values are used to recognize the walk.

Next, when a step is detected through step S300, the step counting unit 300 accumulates the number of steps (S400). In operation S400, the operation controller in the terminal calculates the number of peak changes such as high peak, low peak, and high peak as described above, and continuously accumulates the number of steps while the user's walking state is performed.

Next, the comparison operation unit 400 compares the cumulative counting step N accumulated through the step S400 with the positioning reference step Nr, and the cumulative counting step N is greater than or equal to the positioning reference step Nr. It is determined whether or not (S500). The location reference number of steps is to determine the current location of the user by receiving wireless information such as GPS reception information, virtual beacon information using the surrounding environment, etc. It is possible to reduce battery consumption as much as possible by determining whether the base service registration location is close.

In step S500, when it is determined that the cumulative counting step N is less than the positioning reference step Nr, it is fed back to perform step S200 again.

Next, when the comparison result of step S500, the cumulative counting step (N) accumulated to date is determined to be more than the positioning reference step (Nr), the control unit 500, such as GPS reception information, virtual beacon information, wireless By receiving the location information to determine the current location of the user (S600).

The location criterion number Nr is derived through the following equation, and the applicant can reliably detect whether the user is close to the service registration location while minimizing the number of user's location checks in the location-based service area. In order to make it possible, the following steps are used to set the positioning standard steps.

[Equation 1]

Where Nr is a location reference step, Rr is a distance based on the number of users in the location-based service area, Sr is a distance based on the number of users, and E (R) is an average of moving distances of the number of users in the location-based service area. where σ (R) is the standard deviation of moving distance of multiple users in the location-based service area, E (S) is the stride mean of multiple users, σ (S) is the standard deviation of multiple users, and n and m are correction coefficients. .

That is, the present invention relates to a standard deviation resulting from various factors such as average distance of multiple movers and factors such as straight walking / turning walk within the location-based service area, and standard resulting from difference of average stride length and physical condition of multiple movers. By applying the deviation, the location-based criterion for locating from the entry point to the exit point of the location-based service area was optimized.

In the present invention, n and m are correction coefficients applied to elastically adjust the moving distance criterion and the stride length criterion of a plurality of users in the location-based service area, and preferably have a value between -2 and 2. The n, m values are stored in the location-based service-related app driving program installed in the mobile terminal, and the app driving controller can be applied by adjusting the n, m values as appropriate.

In this case, as n increases, the number of location reference steps increases, thereby reducing terminal battery consumption. However, the user's location while the user enters the location-based service area through an entry point and then exits the area through an exit point. There is a possibility that the check process (step S600) is not performed and passed. (Position detection probability decreases)

Conversely, as the m value increases, the number of location reference steps decreases, thereby increasing the terminal battery consumption.However, the user's location while the user enters the location-based service area through an entry point and then exits the area through an exit point The probability of passing without a confirmation process (step S600) may be reduced (increased position detection probability).

In the present invention, the correction coefficients n and m can be variably selected from a numerical range of -2 to 2 according to the importance of the location-based service, and when the location-based service provider determines that the importance of the provided service is high, Increasing the location detection probability of the user is increased, and conversely, if it is determined that the importance of the provided service is low, the value of n may be relatively increased to reduce the battery consumption even though the location detection probability decreases to some extent.

Hereinafter, test data on position detection probability and battery consumption change according to n and m value variations will be described.

Table 1 below shows a reference value for showing the variation value and the unit is m (meter). The positioning criterion number Nr of Table 1 is a value in which n and m are not reflected.

Radius of service area 10 Average travel distance E (R) 15 Travel distance standard deviation σ (R) 3 Average stride length E (S) 0.57 Stride standard deviation σ (S) 0.0996 Location standard step Nr 26.316

Table 2 below shows position detection probability test data values according to n and m value variations, and the unit is%.

Table 3 below shows test data of battery consumption change according to n and m value changes, and the unit is the percentage of battery capacity consumed based on 100% battery charge.

From the data in Table 2 and Table 3, it can be seen that the position detection probability and battery consumption change as the correction factors n and m are variably applied.

Specifically, if the value of m exceeds 2 or the value of n is less than -2, a meaningless situation may occur where the probability of position detection exceeds 100%, and the value of m decreases below -2 or the value of n exceeds 2 In this case, even if the importance of the service event is low, there may be a problem that the detection probability may be too low, below 10%.

In addition, if the n value is less than -2 or the m value is greater than 2, a serious problem may occur in which the battery consumption exceeds 2% in using the location-based service. Inconvenience may occur due to a sharp drop in consumption.

It is preferable that the service provider selects and applies appropriate n and m values according to the environment (importance) of the service by applying importance of location-based services, location detection probability, and battery consumption in various ways, and n and m values are -2. If less than 2, an optimized result can be obtained.

On the other hand, in step S600, if the cumulative counting step (N) is more than the positioning reference step (Nr), the operation to check the current location of the user to receive the wireless location information, for example, GPS reception information, Wireless location information such as wifi information, wifi information, geomagnetic field sensor information, virtual beacon information, and the like may be received.

Applicant of the present invention has a patent right for position measurement using a virtual beacon, the patent is registered in Korea Patent Registration No. 10-1674184 (November 2, 2016 registered, name: position measurement system using a virtual beacon And the method).

In the step S600 of the present invention can receive the wireless location information to determine the current location of the user through a known location confirmation method.

Meanwhile, as shown in FIG. 2, the control unit 500 determines that the cumulative counting step N in step S600 is equal to or greater than the positioning reference step Nr, and the current location confirmation operation of the user is completed. The cumulative counting steps accumulated up to 0 are reset to zero (S610). Thereafter, the step S400 is repeated to accumulate the number of steps.

In the case of step S610, if the service registration location is provided in two or more than one in the location-based service area, by resetting the cumulative counting step to zero after completing the location check in any one service registration location after registering another service If additional positioning is followed by movement (access) to the position, the reliability of the positioning can be improved.

Next, the control unit 500 determines whether the current location of the user identified in step S600 is close to the service registration location in the location-based service area (S700). If it is determined in step S700 that the proximity is notified to the user through the method of location-based content information, such as PUSH notification on the app (S800). In this case, the determination of whether or not the proximity to the specific position can be determined using a conventional position determination method. If it is determined in step S700 not close to the service registration location is fed back to perform the step S200.

Although the invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the invention is not limited thereto, but is defined by the claims that follow. Accordingly, one of ordinary skill in the art may variously modify and modify the present invention without departing from the spirit of the following claims.

100: acceleration sensor unit 200: step detection unit
300: step counting unit 400: comparison operation unit
500: control unit

Claims (5)

As a method of detecting a user's step and confirming the user's location,
(a) activating an acceleration sensor unit mounted in the mobile terminal to generate an acceleration signal;
(b) detecting a user's step by filtering the generated acceleration signal through a low pass filter;
(c) accumulating the number of steps when the step is detected in step (b);
(d) comparing the cumulative counting steps with the positioning reference steps for checking the current location of the user;
(e) checking the current location of the user through the wireless location information when the cumulative counting step is greater than or equal to the positioning reference step as a result of the comparison in step (d); And
and (f) informing the user of the location-based content if it is determined that the identified current location of the user is close to the service registration location in the location-based service area. The method of claim 1,
The location reference step number is a location determination method for providing a location-based service with reduced battery consumption, characterized in that derived through the following equation.
[Equation 1]

Where Nr is the location criterion
Rr is based on the distance traveled by multiple users in the location-based service area,
Sr is based on the stride length of many users,
E (R) is the average distance traveled by multiple users in the location-based service area,
σ (R) is the standard deviation of moving distance of multiple users in the location-based service area,
E (S) is the stride average for many users,
σ (S) is the stride standard deviation of many users,
n and m are correction coefficients. The method of claim 2,
N and m are
Location determination method for providing a location-based service with reduced battery consumption, characterized in that it is variably selectable from the numerical range of -2 to 2 according to the importance of location-based services. The method of claim 1,
Resetting the cumulative counting step to zero when the current position of the user is confirmed in the step (e) further comprising the step of providing a location-based service for reducing battery consumption. A system for identifying a user's location by detecting a user's step by using the positioning method of any one of claims 1 to 4,
An acceleration sensor unit mounted on the mobile terminal to generate an acceleration signal;
A step detector detecting a user step by filtering the acceleration signal generated by the acceleration sensor unit;
A step counting unit accumulating and counting user steps detected by the step detector;
A comparison operation unit which compares the accumulated counting step count calculated by the step counting unit with a positioning reference step number for determining the position of the user; And
Receiving a comparison result of the comparison operation unit checks the location of the user, and when the proximity to the location location system for providing a location-based service reduced battery consumption comprising a control unit for notifying the user location-based content.

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