JPS63246943A - Portable information device - Google Patents

Abstract

PURPOSE:To extend the service life of a built-in battery by fetching energy propagated in space and applying radio communication by a power obtained by a radio power receving means converting the fetched energy into power. CONSTITUTION:A portable information device 1 is held in a transmission station 2 and a power reception coil 3 of the portable information device 1 and a power sending coil 5 of the transmission station 2 are coupled by densely by iron cores 4, 6. The power supplied from the transmission station 2 is changed into a change io the magnetic force by the power transmission coil 5, fed to the portable information device 2 and changed again into the power by the coil 3. That is, the power is supplied by the magnetic coupling between the coils. An infrared ray emitting diode 7 and an infrared ray reception diode 8 are driven by the supplied power. Thus, the power consumption of the built-in battery is saved and the service life of the battery is extended remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a low power consumption portable information device having a wireless communication function.

[Summary of the invention]

The present invention is applicable to portable information devices that need to communicate wirelessly.
By obtaining power for communication from outside, a part of the power required for communication can be reduced, and the power required for communication can be reduced.
This is to suppress the consumption of water in the pond.

[Conventional technology]

In the past, there have been portable information devices that have the ability to wirelessly communicate with other devices such as host terminals without using connectors due to their reliability and water resistance, but all of them rely on built-in batteries to store power during communication. I was getting it from.

[Problem that the invention attempts to solve]

However, for portable information devices that require wireless communication, a large amount of power is consumed for communication, and when communication is carried out frequently, the built-in battery is rapidly consumed, resulting in a shortened service life.

Therefore, the present invention aims to prolong the life of the built-in battery by obtaining power from outside during communication.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention adds a wireless power receiving means to obtain the power necessary for communication from outside to operate the wireless communication means.

[Effect]

According to the above configuration, all the power required by the wireless communication means is supplied from the outside, and the built-in battery of the portable information device can be omitted.

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings. 1st
In the figure, the portable information device 1 is placed in the transfer station 2, and the power cost of the portable information device 1 is the coil 3, and the magnetic force of the power sending coil 5 of the transfer station 2 is the iron core 4.
6. Furthermore, the mobile information 'a1 has an infrared light emitting diode 7 and an infrared light receiving diode 8 as wireless communication means, and the transfer station 2 also has an infrared light emitting diode 9 and an infrared light receiving diode 10.

The electric power supplied from the transfer station 2 is converted into a change in magnetic force by the power sending coil 5 and sent to the mobile information "a2," and the electric power is converted back into electric power by the coil 3. That is, the electric power is changed by the magnetic coupling between the coils. The infrared light emitting diode 7 and the infrared light receiving diode 8 are driven by the supplied power.

FIG. 2 is a circuit block diagram of the power propagation and communication sections of the portable information device 1 and the transfer station 2.

The left side of the center dotted line represents the circuit within the transfer station 2, and the right side represents the circuit within the portable information device 1.

The power sending coil 5 in the transfer station 2 is connected to an alternating current voltage source 21 . There are light emitting and light receiving diodes 9, 10 for wireless communication.

The power cost of the portable information device 1 is the rectifier diode 19 in the coil.
is connected, and its output is connected via an electrolytic capacitor 20 to the 1π source line of the reception amplifier circuit 17, the transmission drive circuit 18, and the infrared light receiving diode 8 and the infrared light emitting diode 8.

The power of the AC voltage source 21 of the transfer station 2 is supplied to the portable information device 1 by the power sending coil 5, and the power is supplied to the portable information device 1 by magnetic coupling of the coil 3. At this time, the iron core 4.6 serves to tighten the magnetic coupling and increase the power transmission efficiency.

The power cost is the power obtained by coil 3, the power obtained by rectifier diode 1
9, smoothed by an electrolytic capacitor 20, an infrared light emitting diode 7, an infrared light receiving diode 8,
The signal is supplied to a reception amplifier circuit 17 and a transmission drive circuit 18.

Figures 3 and 4 are a front view and a top view of the coil block used for transferring power costs in the example, and by using the coil 3 and iron core 4, leakage of magnetic flux is reduced, This enables efficient power supply.

In the embodiments described above, power consumption of the built-in battery during communication can be suppressed by externally supplying power to the communication unit during wireless communication.

〔Effect of the invention〕

As explained above, the present invention has the effect of receiving the power consumption of the communication circuit from the outside during wireless communication, suppressing the power consumption of the built-in battery, and significantly extending the battery life.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a portable fFi device according to the present invention;
The figure is a block diagram of a transfer circuit according to the present invention, FIG. 3 is a front view of the coil block, and FIG. 4 is an elevational view of the coil block. 1...Portable information device 2...Transfer station 3...Power cost is coil 4...Iron core 5...Power sending coil 6...=Iron core 7...Infrared light emitting diode 8 ...Infrared light receiving diode 11...Infrared filter 13...Transfer station transmitting circuit 14...Transfer station receiving circuit 15...Receiving processing circuit 16...Transmitting data generating circuit 17...Receiving amplifier circuit 18... Transmission drive circuit (1 other person) Divine ceremony ([V circuit 7゛° port 11. Figure 2

Claims (3)

[Claims] (1) A portable information device comprising: a wireless power receiving means that captures spatially propagating energy and converts it into electric power; and a wireless communication means that performs wireless communication using the electric power obtained by the wireless power receiving means. (2) The portable information device according to claim 1, wherein the wireless power receiving means obtains power by electromagnetic induction. (3) The portable information device according to claims 1 and 2, wherein the wireless communication means is an infrared light emitting/receiving element.