Mobile terminal, wireless charger and wearable device

1. A wearable device comprising:

a shoe;

a base provided in an insole of the shoe;

a plurality of pressure sensing units provided in the base to sense pressure;

a plurality of acupressure units including an acupressure projection to apply an acupressure to a user's foot, each of the plurality of acupressure units associated with a corresponding one of the pressure sensing units;

a control unit configured to control the plurality of acupressure units such that the acupressure projections are selectively controlled based on the pressure sensed by the corresponding pressure sensing units; and

a wireless communication unit synchronizable with an external mobile terminal.

2. The wearable device of claim 1 , further comprising:

a battery to supply electric power; and

a wireless charging coil provided in the base to charge the battery when placed in an external electromagnetic field.

3. The wearable device of claim 1 , wherein a plurality of acupressure modules are defined by the acupressure units and corresponding pressure sensing units,

wherein the control unit is configured to control at least one of the acupressure modules such that the acupressure projection is projected, when order of the pressure variation sensed by the pressure sensing unit is different from a preset order of pressure variation, and

wherein the acupressure modules are arranged along a longitudinal direction of the base.

4. The wearable device of claim 1 , further comprising a battery to supply electric power to the acupressure units,

wherein each of the acupressure units is an electroactive polymer having a variable profile when a voltage is applied thereto, and

wherein the control unit is configured to:

apply a first-leveled voltage corresponding to a first height variation of the acupressure unit to the acupressure unit,

measure a second height variation of the acupressure unit based on pressure variation sensed by the pressure sensing unit, and

calculate a compensated voltage having a level corresponding to a difference between the first height variation and the second height variation, when the first height variation is different from the second height variation, and

apply a pressure corresponding to the compensated voltage to the acupressure unit.

5. A wireless charger comprising:

a wireless charging panel configured to measure the weight of a user standing on a top surface thereof, the wireless charger comprising a wireless electric power transmission coil;

a height measuring sensor provided on a structure vertically over the wireless charging panel to measure a current height of the user when the user is standing on the wireless charging panel; and

a wireless communication unit configured to transmit data of the user's current height measured by the height measuring sensor and the weight measured by the wireless charging panel to an external mobile terminal.

6. The wireless charger of claim 5 , wherein the wireless communication unit is synchronized with a wearable device configured to perform an acupressure function for practicing acupressure treatment on a foot of the user; and

wherein the wireless charger further comprises a user input unit configured to receive an input of a walking target distance for the user.

7. A mobile terminal comprising:

a height input unit configured to receive a current height of a user;

a wireless communication unit synchronized with a wearable device configured to perform an acupressure function for practicing acupressure treatment on a foot of the user;

a user input unit configured to receive an input of a target walking distance and a target walking time; and

a control unit configured to calculate an expected height based on the user's current height, the target walking distance and the target walking time.

8. The mobile terminal of claim 7 , further comprising a GPS module configured to receive location information of the mobile terminal,

wherein the control unit calculates a moved distance of the user based on a change of location information received by the GPS module, and

wherein, when there is a difference between the user's moved distance and a one-day target of the target walking distance, the control unit corrects the expected height.

9. The mobile terminal of claim 7 , wherein the control unit adjusts the expected height when the current height is updated.

10. The mobile terminal of claim 7 , wherein the wearable device includes an acupressure unit configured to apply a pressure to a lateral surface of an ankle of the user and a curvature measurer provided to sense curvature variation generated when the user is walking, and

the control unit calculates a precise position of an ankle bone of the user based on the curvature variation measured by the curvature measurer and controls the wireless communication unit to transmit a command for controlling a position of the acupressure unit provided in the wearable device.

11. The mobile terminal of claim 7 , wherein a step of the user is calculated based on the user's current height and the target distance is calculated as a step count based on the user's step, and

the expected height is calculated based on the step count.

12. The mobile terminal of claim 7 , wherein the control unit controls an indicator to be output on a display unit of the mobile terminal to indicate a status of the wearable device, and

wherein the status of the wearable device includes one of walking, charging, low battery remaining and synchronization checking.

13. The mobile terminal of claim 7 , wherein the control unit is configured to provide an alarm notifying the user of failure of a one-day target distance, using an external mobile terminal, when a one-day moved distance fails to reach the one-day target distance of the target walking distance.