KR101095127B1 - Power Management Device For Mobile Portable Device And Method Thereof - Google Patents

Abstract

The present invention relates to a power management apparatus and method of a mobile portable device, and more particularly, to determine a user's use state by various sensors mounted on the mobile portable device, and to adjust the power mode of the wireless LAN according to the use state. The present invention relates to a power management apparatus and method of a mobile portable device, which can effectively reduce unnecessary battery consumption, thereby increasing an available time of the mobile portable device for a limited battery capacity.

Mobile handheld devices, interactive network applications, distance measurement, movement, power management

Description

Power Management Device For Mobile Portable Device And Method Thereof}

The present invention relates to a power management apparatus and method of a mobile portable device, and more particularly, to determine a user's use state by various sensors mounted on the mobile portable device, and to adjust the power mode of the wireless LAN according to the use state. The present invention relates to a power management apparatus and method of a mobile portable device, which can effectively reduce unnecessary battery consumption, thereby increasing an available time of the mobile portable device for a limited battery capacity.

In particular, the present invention can be applied to all mobile portable devices that can use interactive network applications such as web browsing and network games.

With the development of technology, mobile handheld devices are evolving from simple call function to smart phone that performs various computing functions as well as wireless internet.

According to the above evolution, battery consumption of mobile mobile devices increases, and accordingly, battery technology does not meet the technological development speed of mobile mobile devices even though battery capacity needs to be increased.

According to the current technology level, in order to increase the battery capacity, the battery area must be increased, which increases the size of the entire mobile handheld device, which hinders slimming and miniaturization.

Therefore, there is an urgent need for a study on power management that can maximize the available time of a mobile portable device by reducing power to the limited battery capacity as much as possible.

In order to solve the above problems, an object of the present invention is to detect power consumption when the user does not actually use the interactive network application in the mobile mobile device by reducing the power consumption unnecessarily It is to provide an apparatus and method for power management of a mobile portable device that can increase the available time by preventing the use.

1 is a block diagram schematically illustrating a power management apparatus of a mobile portable device according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a power management apparatus of a mobile portable device according to the present invention measures a distance between the mobile portable device and a user, and detects a movement of the mobile portable device and a distance between the user and the sensor unit 10. And the use state is divided into a plurality of levels according to the movement of the mobile device, and the power mode according to each level is set and stored differently, and the level matching the information sensed by the sensor unit is extracted to the power mode of the corresponding level. It characterized in that it comprises a power management unit 20 to adjust the power according.

The mobile portable device may include any mobile device capable of wireless internet such as a mobile phone, a smart phone, a PDA, a PMP, and a WiBro terminal.

The sensor unit 10 may include a distance measuring sensor 110 that measures a distance between the mobile portable device and a user, and a motion detection sensor 120 that detects a movement of the mobile portable device.

Here, the distance measuring sensor 110 is characterized in that the infrared sensor or the ultrasonic sensor.

The motion sensor 120 may be at least one selected from an acceleration sensor, a gyro sensor, a piezoelectric sensor, and a displacement sensor.

In addition, the power manager 20 divides a usage state combining a range of whether it is within a set arm-length range and whether there is a movement of a mobile device into a plurality of levels, and sets a different power mode to be applied for each level. Power to control power in the power mode of the corresponding level by extracting a level matching the distance value measured from the reference level setting module 210 and the distance measuring sensor and the motion detection sensor and a plurality of levels that are stored Characterized in that it comprises a management module 220.

The reference level setting module 210 is divided into four levels, but within the set arm-length range and in a static state without movement, the reference level setting module 210 is set to PM level 1 and the set arm-length PM level 2 within the range and within the vibrational state with movement, PM level 3 when the static state is outside the arm-length range and without the movement, and the set use The PM level 4 may be set when the vibration state is outside the arm-length range and there is a vibration state.

In the PM level 1, the reference level setting module 210 sets the listening interval to 100 to 150 ms in the power mode of the wireless LAN, and in the PM level 2, the power mode to the wireless LAN. In the on state, the listening interval is set to 150 to 200 ms, and in the PM level 3, the power mode sets the listening interval to the 200 to 400 ms when the WLAN is on, and the PM level 4 In the case of wireless LAN driving is characterized in that the setting to stop.

On the other hand, the power management method of the mobile portable device according to the present invention sets a plurality of levels of the use state according to the arm-length and the movement of the mobile device with the user, and sets a different power mode for each level Setting a reference level for storing and storing a reference level; and extracting a matched level by comparing the sensed information from the distance measuring sensor and the motion detection sensor with the stored reference level; and carrying the mobile according to the power mode of the extracted level. Controlling the power of the device.

Here, the setting of the reference level is within the set arm-length range, in a static state without movement, set to PM level 1, and within the set arm-length range, Set to PM level 2 in case of vibration state with movement, set to PM level 3 when outside of the set arm-length range and in static state without movement, and set arm-length It is characterized by setting to PM level 4 when it is out of range and there is a vibration state with movement.

In the setting of the reference level, in the PM level 1, in the power mode, the listening interval is set to 100 to 150 ms when the wireless LAN is on. In the PM level 2, the power mode is set to the wireless LAN. In the on state, the listening interval is set to 150 to 200 ms, and in the PM level 3, the power mode sets the listening interval to the 200 to 400 ms when the WLAN is on, and the PM level 4 In the case of wireless LAN driving is characterized in that the setting to stop.

In addition, the step of extracting the level may be informed by the microprocessor if there is an interactive network application execution, the power management module compares the information sensed by the ranging sensor and the motion detection sensor with the stored reference level to match the level It is characterized in that the extraction.

And feeding back to the step of extracting the level when the set update period arrives after the step of controlling the power.

The present invention can effectively reduce unnecessary battery consumption of the mobile portable device, thereby increasing the available time of the mobile portable device.

Increasing the available time of mobile handheld devices such as smart phones that provide the increasing wireless Internet function in recent years has the effect of increasing the battery capacity, thereby increasing the efficiency of the system and the user's satisfaction with the product. .

In addition, when the present invention is applied to the development of mobile handheld devices such as mobile phones, smart phones, PMPs, PDAs, etc., the present invention can develop a system in which the available time is increased without deterioration of performance, and a system having a strong wireless network function and a long available time. It can bring economic development by satisfying user's demand for the product, and it is very effective invention in terms of industrial technology and cultural aspect through the application of various contents.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

According to an embodiment of the present invention, a distance measured by a distance measuring sensor mounted on a mobile portable device is out of a use distance (defined as arm-length) that can be dropped when a user uses the mobile portable device, or motion is detected from a motion measuring sensor. In this case, it is characterized by minimizing battery consumption by adjusting the power mode of the WLAN card to a low power mode and adjusting the listening interval step by step.

In the present embodiment, for convenience of description, an infrared (IR) sensor is used as a distance measuring sensor, and an accelerometer (accelerometer, acceleration, rotation, vibration) sensor is used as a motion measuring sensor.

FIG. 2 illustrates arm-length measurement between a user and a mobile portable device using an infrared sensor according to a preferred embodiment of the present invention.

Referring to FIG. 2, the value measured from the infrared sensor is used as a criterion for determining whether the user is actually using the mobile portable device. As can be seen from FIG. 2, when the light emitter of the infrared sensor emits infrared light, the light receiver receives light reflected from the user, and the distance between the user and the mobile portable device can be measured from the time when the infrared light is emitted and reflected back. .

Whether to use For accurate judgment, it is preferable that the light emitting unit and the light receiving unit of the infrared sensor are located at the front of the mobile portable device, and formed at an optimal position where the user can measure the distance to the user while using the mobile portable device normally. Do.

When the light emitting unit and the light receiving unit are formed on the front of the mobile portable device, the angle does not have a large influence for recognition, but in general, when the user uses the mobile portable device, the user uses the wrist to be inclined 45 to 60 degrees from the horizontal most free. The mobile terminal may be mounted to have an inclination of 45 to 60 degrees from the horizontal center portion or the lower end portion of the mobile portable device. In particular, the infrared sensor may be formed at the lower end of the front surface in consideration of eye level and inclination of use of the mobile portable device.

The position of the light emitting unit and the light receiving unit of the infrared sensor is important for accurate determination of whether or not to use it, and it is desirable that the user is formed at an optimal position to measure the distance to the user in a state of using a mobile portable device. Do.

In general, since the user uses the wrist to be inclined at 45 to 60 degrees from the horizontal most free when using the mobile portable device, the infrared sensor is mounted to have a 45 to 60 degrees inclination from the horizontal at the front center or the bottom of the mobile portable device. desirable.

In particular, the infrared sensor is preferably formed at the front lower end in consideration of the eye height and inclination to use the mobile portable device.

3 illustrates a distance between a user and a mobile portable device with respect to a set arm-length according to the present invention.

FIG. 3 presents a criterion between the distance between the user and the mobile portable device measured by the infrared sensor and the arm-length that can be spaced apart when the user uses the mobile portable device.

Here, the arm-length does not mean a user's arm length, but generally means a distance spaced when using a mobile portable device.

In general, a margin in consideration of an error such as an arm length and a posture of a user may be set in a distance from which the user is separated for use of a mobile portable device.

The arm-length may set a minimum range (MIN, Minimum) and a maximum range (MAX, Maximum), and the measured value Dm is an arm-lenght between the minimum range and the maximum range. If it is determined to be in the use state, and less than the minimum range, or more than the maximum range can be determined as a non-use state. For example, if the minimum range is set to 10cm, the maximum range is set to 80cm, in this case the use distance is 10 ~ 80cm.

When the measured value is an object a as shown in FIG. 3, the user may determine that the user is using the mobile mobile device because the user is within the range of use, and in the case of the object b, the interactive network application is performed on the mobile device. It may be determined that the user does not use even while performing.

When the user turns on the mobile device's wireless LAN and executes the interactive network application, the user does not use the mobile phone, but suddenly rings the doorbell or makes a call. Can occur in

In this similar case, the WLAN card uses communication power to continuously perform interactive network applications even if the system is in an idle state, thereby causing unnecessary consumption of the battery. To improve this point, the present invention adjusts the power mode of the WLAN card to the low power mode when the distance measured by the sensor in the mobile portable device is outside the arm-length, and the listening period related to the power consumption. (listening interval) is adjusted step by step, and after a certain time to manage the power by turning off the WLAN.

4 is a diagram for determining a usage state according to a movement of a mobile portable device.

4 illustrates a technique of using values of accelerometer (acceleration, rotation, vibration) sensors in a mobile portable device as an additional criterion for determining whether the user is actually using the mobile mobile device.

4A illustrates a case in which a user moves a mobile portable device into a pocket or a bag. At this time, even if the interactive application is not terminated on the mobile mobile device, since the distance to the user is within the minimum range of arm-length, it is difficult to determine that the user uses the mobile mobile device. Since the value sensed by the vibration state can be more surely determined that the mobile portable device is not in use.

4B illustrates a static state in which a user uses a mobile portable device. Since the user is within an arm-length and the mobile portable device is in a static state without vibration, it can be determined that the mobile portable device is in use.

4C illustrates a case where a user is moving while using a mobile portable device. In this case, since the user is within an arm-length, it may be determined that the mobile device is used while moving.

As a result, more accurate power mode adjustment is possible by using the value measured by the distance measuring sensor as the primary reference for determining whether the user is actually using the mobile portable device and the value measured by the motion measuring sensor as the secondary reference.

Through the above method, the present invention can effectively reduce unnecessary battery consumption of the mobile portable device and increase the available time of the mobile cellular phone.

The present invention is characterized by applying the power control of the wireless LAN card by step with the result determined based on the sensor, this embodiment is to divide into four levels, but this is for convenience of description and the present invention It is apparent that the values measured from the sensors can be set to various levels of at least two levels.

Table 1 below shows the reference level set to adjust the power mode of the wireless LAN according to the value sensed through the sensor unit.

 Here, Dm is the measured distance value, MIN is the minimum range of the set range, MAX is the maximum range of the set range.

Table 2 below shows the power mode adjusted according to the level.

That is, in the case of level 1, the listening period is maintained at 100 ms while the WLAN is on. In the case of level 2, the listening period is changed to 200 ms when the WLAN is on. When the WLAN is turned on, the listening period is changed to 400 ms to further reduce power, and when the level is 4, the WLAN is turned off.

Here, since the WLAN driving and listening cycles are for one embodiment for convenience of explanation, it will be apparent that the present invention may be variously modified and implemented. Therefore, even in level 4, the WLAN may not be turned off according to the setting option, and the listening period may be variously changed according to the setting option.

The driving and listening interval of the WLAN may be adjusted and set in various ways according to the set level.

5 is a flowchart schematically illustrating a power management method of a mobile portable device according to an exemplary embodiment of the present invention.

The power management method of the mobile portable device having four levels and power modes as described above will be described in detail with reference to FIG. 5.

Since the power management method of the mobile portable device according to the present invention is applied after the interactive network application is performed, the function is activated when the interactive network application is performed.

First, when an interactive network application is performed, an infrared sensor measures the distance between the user and the mobile portable device. The accelerometer sensor then detects whether or not the mobile portable device is in motion.

Accordingly, if the measured distance is within the arm-length range and there is no vibration, it is determined as level 1, and if the measured distance is within the arm length range and the vibration state is level 2 If the measured distance is outside the arm-length range and there is no vibration, it is determined as level 3; if the measured distance is outside the arm-length range and the vibration state, level 4 Determined by

Accordingly, when it is determined as the level 1, the WLAN driving is kept on and the listening interval is maintained at 100 ms. When it is determined as the level 2, the WLAN driving is kept on but the listening interval is listening interval. ) Is changed to 200ms, and when it is determined as level 3, the WLAN driving is maintained on, but the listening interval is changed to 400ms, and when it is determined as level 4, the WLAN driving is changed to off.

Subsequently, as long as the execution of the interactive network application is maintained, the above-described process may be repeated for each set update period, and the battery power consumption may be reduced by executing the power mode accordingly.

In the above embodiment, the level is divided into four types, but the arm-length and the degree of movement are further subdivided into four or more levels, and the power mode can be subdivided according to the level to manage power. It is self-evident.

In the detailed description of the present invention described above with reference to the preferred embodiment of the present invention, the scope of protection of the present invention is not limited to the above embodiment, and those skilled in the art of the present invention It will be understood that various modifications and changes can be made in the present invention without departing from the spirit and scope of the invention.

1 is a block diagram schematically illustrating a power management apparatus of a mobile portable device according to an exemplary embodiment of the present invention.

FIG. 2 illustrates arm-length measurement between a user and a mobile portable device using an infrared sensor according to a preferred embodiment of the present invention.

3 illustrates a distance between a user and a mobile portable device with respect to a set arm-length according to the present invention.

4 is a diagram for determining a usage state according to a movement of a mobile portable device.

5 is a flowchart schematically illustrating a power management method of a mobile portable device according to an exemplary embodiment of the present invention.

Claims (12)

As a power management device for mobile mobile devices, A sensor unit for measuring a distance between the mobile portable device and a user, and detecting a movement of the mobile portable device; And The state of use, which is a combination of whether the distance between the mobile mobile device and the user is within a set arm-length range and whether the mobile mobile device is in motion, is divided into a plurality of levels and applied to each level. A reference level setting module for differently setting and storing the power mode of the wireless LAN card, and extracting a corresponding level among the plurality of levels based on the distance value and the motion signal from the sensor unit, and converting the power mode into the power mode of the corresponding level. Power management device comprising a; power management unit including a power management module for controlling the power of the wireless LAN card. The method of claim 1, The sensor unit A distance measuring sensor measuring a distance between the mobile portable device and a user; And a motion detection sensor for detecting a motion of the mobile portable device. 3. The method of claim 2, The distance measuring sensor Power management device of a mobile portable device, characterized in that the infrared sensor or the ultrasonic sensor. 3. The method of claim 2, The motion detection sensor At least one selected from the group consisting of an acceleration sensor, a gyro sensor, a piezoelectric sensor, and a displacement sensor. delete The method of claim 1, The reference level setting module Divided into 4 levels, PM level 1 is set in the arm-length range and there is no motion, and PM level 2 is set in the arm-length range and in the vibration state. And PM level 3 when the static state is outside the set arm-length range and there is no motion. PM level 4 when the vibration state is outside the set arm-length range and there is motion. Power management device of a mobile portable device, characterized in that set to. The method of claim 6, The reference level setting module In the PM level 1, the power mode sets a listening interval to 100 to 150 ms when the WLAN is turned on. In the PM level 2, the power mode is a listening interval when the WLAN is turned on. Is set to 150 ~ 200ms, in the case of the PM level 3, the power mode is set to the listening interval (listening interval) to 200 ~ 400ms when the WLAN is on, the wireless LAN operation is set to stop in the PM level 4 Power management device of a mobile portable device, characterized in that. As a power management method for mobile mobile devices, The use state combining whether the distance between the mobile mobile device and the user is within a set arm-length range and whether the mobile mobile device is in motion is divided into a plurality of levels, respectively, A first step of setting and storing different power modes of the WLAN card to be applied for each level; Extracting a matching level among the plurality of levels with respect to information sensed by a ranging sensor and a motion detecting sensor; And And a third step of controlling power of the WLAN card of the mobile portable device according to the extracted power mode. The method of claim 8, The first step is PM level 1 is set in the arm-length range and there is no motion, and PM level 2 is set in the arm-length range and in the vibration state. And PM level 3 when the static state is outside the set arm-length range and there is no motion. PM level 4 when the vibration state is outside the set arm-length range and there is motion. Power management method of a mobile mobile device, characterized in that set to. The method of claim 9, The first step is In the PM level 1, the power mode sets a listening interval to 100 to 150 ms when the WLAN is turned on. In the PM level 2, the power mode is a listening interval when the WLAN is turned on. Is set to 150 ~ 200ms, in the case of the PM level 3, the power mode is set to the listening interval (listening interval) to 200 ~ 400ms when the WLAN is on, the wireless LAN operation is set to stop in the PM level 4 Power management method of a mobile portable device, characterized in that. The method of claim 9, The second step is When there is an interactive network application execution, it is notified by the microprocessor, and the power management module compares the sensed information from the ranging sensor and the motion sensor with the set level and extracts a matching level. Power management method. The method of claim 9, After the third step And feeding back to the second step when the set update period arrives.

Images