1. Technical Field
The present disclosure relates to power supply devices, and particularly to a power supply device for supplying power to an electronic device with an electronic tag.
2. Description of Related Art
Providing power to an electronic device, such as a personal digital assistant (PDA), a mobile phone, and others, requires design considerations with respect to both the electronic device and power supply device. With regard to the electronic device, most electronic devices provide a distinct power interface for receiving power from a power supply device. For example, many mobile devices presently use universal serial bus (USB) interfaces for communicating and use a separate power interface, such as a connector, for receiving power.
Therefore, interfaces for a particular manufacturer's electronic device may not be compatible with interfaces for electronic devices provided by other manufacturers. However, if the electronic device is lost, users must buy a new electronic device or abandon the power supply device.
Referring to
The power supply output module 110 includes a plurality of power supply output interfaces 114 to connect to a plurality of charging interfaces of a plurality of electronic devices, such as the charging interface 304 of the electronic device 300. One of the power supply output interface 114 matches the charging interface 304, and can be a plug or a socket. In other embodiments, the power supply output interface 114 can be other predetermined structures.
The rectifying and voltage dividing apparatus 100 receives an alternating current (AC) voltage via the power supply input interface 112, converts the AC voltage into a direct current (DC) voltage, divides the DC voltage, and outputs divided DC voltages to the control device 102. For example, the divided DC voltage values can include 1.5 volts, 3 volts, 4 volts, 5 volts, 7 volts, 12 volts, and so on.
The plurality of RFID induction antennae 108 is configured for receiving information stored in the electronic tag 302 of the electronic device 300. For example, the information stored in the electronic tag 302 can include a serial number (for example TX009), a charging voltage value, such as 3 volts, of the electronic device 300. In this embodiment, each RFID induction antenna 108 surrounds a corresponding power supply output interface 114, to ensure a good communication between the RFID induction antenna 108 and the electronic tag 302 of the electronic device 300 as shown in
The RFID information processing module 104 is configured for picking up the charging voltage value from the information received by the plurality of RFID induction antennae 108, to output the charging voltage value to the control apparatus 102. And the RFID information processing module 104 is also configured for sending the charging voltage value to the display apparatus 106 to display the charging voltage value. As shown in
The control apparatus 102 is configured for comparing the divided voltage value with the charging voltage value. If the charging voltage value equals to one of the divided voltage value, the control apparatus 102 provides the divided voltage that equals to the charging voltage to the electronic device 300 via the power supply output interface 114. If the charging voltage value does not equal to any one of the divided voltage values, the control device 102 provides nothing to the electronic device 300.
In use, an AC voltage is connected to the power supply input interface 112 of the power supply device 10. The charging interface 304 of the electronic device 300 is plugged into a corresponding one of the plurality of power supply output interfaces 114. The rectifying and voltage dividing apparatus 100 rectifies and divides the AC voltage, and outputs divided voltages, such as 1.5 volts, 3 volts, 4 volts, 5 volts, 7 volts, and 12 volts, to the control apparatus 102. The RFID induction antenna 108 corresponding to the power supply output interface 114 receives information stored in the electronic tag 302 of the electronic device 300. The RFID information processing module 104 picks up the charging voltage value, such as 12 volts, from the RFID induction antenna 108, to display the charging voltage value (12 volts) on the display apparatus 106, and outputs the charging voltage value (12 volts) to the control apparatus 102. The control apparatus 102 compares the divided voltage values with the charging voltage value that equals to one of the divided voltage values, therefore the divided voltage 12 volts is provided to the electronic device 300 via the power supply output module 110.
If the charging voltage value of the electronic device 300 is 2 volts which does not equal to any one of the divided voltage values, the power supply device 10 provides nothing to the electronic device 300 so as not to supply wrong power.
It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
---|---|---|---|
200910300820.1 | Mar 2009 | CN | national |