Portable electronic device

A portable electronic device includes a short distance wireless communicating module and a warning unit. The short distance wireless communicating module is used to establish short distance wireless communicating network with another portable eletronic device and monitor whether the other portable electronic divice is out of wireless network range. The warning unit electrically connects with a short distance wireless communicating module to send out an alarm if the portable electronic device is out of wireless network range.

BACKGROUND

1. Technical Field

The exemplary disclosure generally relates to portable electronic devices, and particularly, to a portable electronic device with a short distance wireless communicating function.

2. Description of Related Art

With the development of wireless communication and information processing technologies, portable electronic devices such as mobile phones and personal digital assistants (PDAs) are now in widespread use, and consumers may now enjoy the full convenience of high technology products almost anytime and anywhere.

More and more families like to take their children out for travelling, shopping, walking, etc. during their spare time. In crowded areas such as shopping centers, amusement parks, etc, the children may easily be lost or strayed in the crowd.

Therefore, there is room for improvement within the art.

DETAILED DESCRIPTION

FIG. 1shows a block diagram of a portable electronic device100, according to an exemplary embodiment, the exemplary portable electronic device100may be an electronic device with a short distance communicating function, such as a mobile phone, a personal digital assistant (PDA), etc. The portable electronic device100can establish a short distance wireless communication network with another portable electronic device100to achieve short distance supervisory control over other portable electronic devices100, carried separately by others. The portable electronic device100includes a short distance wireless communicating module10, a power management module30, a warning unit50and an automatic calling unit70.

The short distance wireless communicating module10is assembled within the portable electronic device100. The short distance wireless communicating module10may be a bluetooth module or a near field communication (NFC) module for establishing a short distance wireless communicating network with another portable electronic device100and executing instructions such as activating the short distance communicating function, receiving and sending out control signals, searching and matching with another portable electronic device100, setting warning mode, setting effective control distance, etc.

The power management module30electrically connects with the short distance wireless communicating module10to distribute power of a battery of the portable electronic device100to the short distance wireless communicating module10, and monitor whether the power of the battery can support operation of the short distance wireless communicating module10. When the power is low, the power management module30will trigger the short distance wireless communicating module10to send out a low voltage signal to other portable electronic devices100on the network to remind the users of the other portable electronic devices100that this portable electronic device100is low in power.

The warning unit50electrically connects with the short distance wireless communicating module10, and includes a loudspeaker51and a vibrator53. When the short distance wireless communicating module10detects that the portable electronic device100is beyond or far away from the preset warning distance or the cover area of the short distance wireless communicating network, the short distance wireless communicating module10will trigger the warning unit50to send out an alarm.

The automatic calling unit70electrically connects with the short distance wireless communicating module10and is controlled or triggered by the short distance wireless communicating module10to call or dial a pre-called number set by the user automatically.

FIG. 2shows a flow chart of the portable electronic device100shown inFIG. 1for establishing a short distance wireless communicating network with another portable electronic device100, in accordance with an exemplary embodiment. When using the portable electronic device100, each user carries a portable electronic device100with a short distance wireless communicating function. Firstly, the short distance wireless communicating module10of the portable electronic device100is activated to start up the location function of the portable electronic device100. Secondly, the short distance wireless communicating module10of one of the portable electronic devices100sends out a searching signal to communicate and match with the other portable electronic devices100. Thus, the portable electronic devices100establish a short distance wireless communicating network together. Finally, setting the warning mode (by the user) and effective distance to make the short distance wireless communicating module10trigger the warning unit50to send out an alarm or trigger the automatic calling unit70to call or dial a pre-called number set by the user automatically when the portable electronic device100is far or out of wireless network range.

During the using process, the short distance wireless communicating module10of each portable electronic device100will monitor the short distance wireless communicating network in real-time. When the short distance wireless communicating module10of one portable electronic device100detects that the wireless communications between itself and other portable electronic devices100are disconnected, the power management module30will detect whether the power of the portable electronic device100is low and thus caused the interrupt. If the power of the portable electronic device100is too low to operate properly, the power management module30will trigger the short distance wireless communicating module10to send out a low voltage signal to the user of the other portable electronic device100. Thus, the portable electronic device100will automatically turn off the location function and quit the short distance wireless communicating network. Then, the user may replace or charge the battery of the portable electronic device100and make the portable electronic device100re-establish the short distance wireless communicating network. If the power of the portable electronic device100is high enough to operate properly, the short distance wireless communicating module10will trigger the warning unit50to warn or/and trigger the automatic calling unit70to call or dial the pre-called number set by the user automatically.

It is to be understood, however, that even through numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structure and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of sections within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms, in which the appended claims are expressed.