JPH0833216A - Electronic apparatus and radio transmitter/receiver - Google Patents

Abstract

PURPOSE:To obtain an electronic apparatus and a radio transmitter/receiver which can be operated continuously for a long time by reducing consumption of a power supply battery. CONSTITUTION:At the time of operation of a transmitting section 3, the transmitting section 3 is connected through a switch 2 with a power supply section 1. Batteries 11, 12 are connected in series through switches 13, 14 at the power supply section 1 and power is fed to the transmitting section 3 from the batteries 11, 12 connected in series. At the time of operation of a receiving section 4, the receiving section 4 is connected through the switch 2 with the power supply section 1. The batteries 11, 12 are connected in parallel through the switches 13, 14 at the power supply section 1 and power is fed to the receiving section 4 from the batteries 11, 12 connected in parallel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device and a wireless transmission / reception device which use a battery as a power source.

[0002]

2. Description of the Related Art Conventionally, in a radio transmitter / receiver which is a kind of electronic equipment, for example, a transceiver, a battery is used as a power source because it is usually carried and used. However, a battery is used as such a power source. Therefore, it is desirable that the battery be charged or replaced less frequently and can be used continuously for a long time.

In a conventional transceiver of this type, however, as shown in FIG. 4, a transmission unit 120 and a reception unit 130 are connected to a battery power supply unit 100 in which two batteries 101 and 102 are connected in series via a switch 110. There are those that can be selectively connected.

In this case, the battery voltage in the battery power supply unit 100 is determined on the assumption that the transmission unit 120 side is connected by the switch 110 and power is supplied to the transmission unit 120. This is because a voltage of at least about 3V is applied to the built-in power amplification transistor, that is, 1.
This is because a power source in which two 5V batteries are connected in series is required.

[0005]

On the other hand, on the other hand, in the receiving section 130, most of the small power amplifying section is, so that it can be operated with a low voltage of about 1.5 V, that is, a power source of one battery. Further, it is known that the current consumption of the transistors forming each circuit in the transceiver is approximately the same when the power supply voltage is set to 1.5V and 3V.

Therefore, in the conventional transceiver,
Using the high voltage required for transmission also for reception has a drawback that it consumes unnecessary power and accelerates battery consumption.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electronic device and a wireless transmission / reception device which reduce consumption of a power supply battery and can be used continuously for a long time.

[0008]

According to the present invention, in an electronic device having a plurality of operating states with different operating voltages and operating with a plurality of batteries, the connection state of the plurality of batteries is switched according to the operating state. A connection switching means is provided.

In the present invention, the connection switching means connects the plurality of batteries in series when the operating voltage is high, and connects the batteries in parallel when the operating voltage is low.

According to the present invention, in a radio transmitter / receiver having a transmitter and a receiver having different operating voltages and operating with a plurality of batteries, the operating voltage is different when the transmitter is operated and when the receiver is operated. Connection switching means for switching the connection state of the plurality of batteries according to the above.

According to the present invention, the connection switching means connects the plurality of batteries in series when operating the transmitter, and connects the plurality of batteries in parallel when operating the receiver.

[0012]

As a result, according to the present invention, the connection state of a plurality of batteries is switched according to the operating state. Therefore, when the battery requires an operation at a high voltage or the battery at a low voltage is sufficient, Since the connection state is switched, the power supply voltage is not consumed more than necessary.

According to the present invention, a plurality of batteries are connected in series when the operating voltage is high, and a plurality of batteries are connected in parallel when the operating voltage is low, so that a high voltage is required. High voltage can be obtained by connecting batteries in series during low-voltage operation, and low voltage can be obtained by connecting batteries in parallel at low-voltage operation, which consumes more power supply voltage than necessary. Disappears.

According to the present invention, the connection state of a plurality of batteries is switched depending on the operating voltage when the transmitter is operated and when the receiver is operated. Since the battery connection state is switched according to the necessary and sufficient reception at a low voltage, it is possible to prevent the power battery from being consumed more than necessary.

According to the present invention, the plurality of batteries are connected in series when the transmitter is operated, and the plurality of batteries are connected in parallel when the receiver is operated, so that the batteries are connected at the time of transmission requiring a high voltage. A high voltage can be obtained by connecting in series, and a low voltage can be obtained by connecting the batteries in parallel at the time of necessary and sufficient reception at a low voltage, so that the power supply battery is not consumed more than necessary.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 shows a configuration of essential parts when an electronic device and a wireless transmitting / receiving apparatus of the present invention are applied to a transceiver.

A power supply unit 1 is connected to a transmission unit 3 and a reception unit 4 via a transmission / reception changeover switch 2. The power supply unit 1 is provided with two batteries 11 and 12 and two switches 13 and 14, and by operating these switches 13 and 14 together, the two batteries 11 and 1 are connected.
Switch between 2 and serial connection. In this case, battery 1
AA or AAA batteries having a voltage of 1.5V are used for 1 and 12, and the switch 2 and the switches 13 and 1 are used.
4 is a mechanical switch.

The negative terminal of one battery 11 in the power supply unit 1 is connected to the movable piece 131 of the switch 13, and one fixed piece 132 of the switch 13 is connected to one fixed piece 142 of the switch 14. And switch 1
The other fixed piece 133 of No. 3 is connected to the negative terminal of the battery 12, and the positive terminal of the battery 12 is connected to the movable piece 141 of the switch 14. Further, the fixed piece 143 of the switch 14 is connected to the positive electrode terminal of the battery 11. The positive terminal of the battery 11 is connected to the movable piece 21 of the transmission / reception changeover switch 2, and the negative terminal of the battery 12 is connected to the ground side.

The switch 2 is interlocked with the switches 13 and 14 in the power supply unit 1, and is a fixing piece 22 of the switch 2.
Is connected to the transmitter 3 and the fixed piece 23 is connected to the receiver 4. The transmitter 3 and the receiver 4 are connected to the ground side. Here, the transmitting unit 3 performs overall transmission control in the transceiver, and the receiving unit 4 performs overall reception control in the transceiver.

Next, the operation of the embodiment configured as described above will be described. First, when the transceiver performs the transmitting operation by the transmitting unit 3, the control unit (not shown) connects the movable piece 21 of the transmission / reception changeover switch 2 to the fixed piece 22 side. In addition, the movable piece 131 of the switch 13 in the power supply unit 1 is interlocked with the transmission / reception changeover switch 2 and the movable piece 131 is fixed.
The movable piece 1 of the switch 14 is connected to the 32 side.
41 is connected to the fixed piece 142 side.

As a result, the negative electrode side of the battery 11 and the positive electrode side of the battery 12 in the power supply section 1 are connected, the battery 11 and the battery 12 are connected in series, and the power supply of about 3 V as a voltage is applied to the movable piece 21 and the movable piece 21 of the transmission / reception changeover switch 2. It is supplied to the transmitter 3 via the fixed piece 22.

Next, when the transceiver receives by the receiving unit 4, the control unit (not shown) connects the movable piece 21 of the transmission / reception changeover switch 2 to the fixed piece 23 side. In addition, in conjunction with the transmission / reception changeover switch 2, the power supply unit 1
The movable piece 131 of the switch 13 is connected to the fixed piece 133 side, and the movable piece 141 of the switch 14 is connected to the fixed piece 143 side.

As a result, the negative electrode terminal of the battery 11 in the power supply section 1 is connected to the ground side, the positive electrode terminal of the battery 12 is connected to the positive electrode terminal of the battery 11, and the battery 11 and the battery 12 are connected.
Are connected in parallel, and a power source of about 1.5 V is supplied to the receiving unit 4 via the movable piece 21 and the fixed piece 23 of the transmission / reception changeover switch 2.

Therefore, according to such an embodiment, at the time of transmitting operation in the transmitting section 3, the power source section 1 and the transmitting section 3 are connected by the transmission / reception changeover switch 2 and the switches 13, 14 of the power source section 1 are connected. The batteries 11 and 12 are connected in series with each other, and power is supplied to the transmitter 3 by the batteries 11 and 12 connected in series. On the other hand, during the reception operation of the receiver 4, the power supply 1 and the receiver 4 are connected. The switch 1 is connected by the switch 2 and the battery 1 is switched by the switches 13 and 14 of the power supply unit 1.
1 and 12 are connected in parallel, and these parallel connected batteries 1
Since power is supplied to the receiving unit 4 by means of Nos. 1 and 12, a high voltage required for transmission can be obtained by the series circuit of the batteries 11 and 12 at the time of transmission, and the batteries 11 and 1 at the time of reception.
The parallel circuit of 2 makes it possible to obtain the voltage required for reception. As a result, it is possible to reduce the consumption of the batteries 11 and 12 without consuming more power than necessary.
The battery can be used continuously for a long time without frequent charging and replacement.

(Second Embodiment) In the first embodiment, an example in which a mechanical switch is used for serial / parallel connection switching of two batteries is shown, but in the second embodiment, an electronic switch is used instead of a mechanical switch. The example used is shown.

FIG. 2 shows a schematic structure of a power supply section of a transceiver in the second embodiment. In this case, the power supply unit has a power supply unit body 5 and a switching control unit 6. The power supply unit body 5 has two batteries 51 and 52 and three transistors Q1, Q2 and Q3 having a switch function, and the positive terminal 53 and the negative terminal 54 of the power supply unit body 5 are not shown. The transmitter and the receiver are selectively connected via a switch. The switching control unit 6
The inverter 6 is used to generate and send a control signal for switching each transistor Q1, Q2, Q3.
It has one and four terminals A, B, C, S.

Here, the transistors Q1, Q2 and Q3 are pnp type transistors. And transistor Q
1 is for connecting batteries 51 and 52 in series, and transistors Q2 and Q3 are for connecting batteries 51 and 52 in parallel.

The collector terminal of the transistor Q1 is the battery 5
1 is connected to the negative terminal of the transistor Q3 and the collector terminal of the transistor Q3.
2 is connected to the positive terminal and the emitter terminal of the transistor Q2. The base terminal of the transistor Q1 is connected to the terminal A of the switching control unit 6 via the base resistor R1.

Further, the positive electrode terminal of the battery 51 is the power source unit 5
And the negative terminal of the battery 52 becomes the negative terminal 54 of the power supply unit body 5 and is connected to the ground side. The collector terminal of the transistor Q2 is connected to the positive terminal 53 of the power supply unit body 5, the base terminal is connected to the terminal B of the switching control unit 6 via the base resistor R2, and the emitter terminal of the transistor Q3 is the power supply unit. 5 is connected to the negative terminal 54, and the base terminal is connected to the terminal C of the switching control unit 6 via the base resistor R3.

On the other hand, inside the switching control unit 6, the terminal A
And terminal S are connected to the input terminal of the inverter 61, and terminals B and C are connected to the output terminal of the inverter 61, and control signals for switching the respective transistors Q1, Q2, Q3 are generated and transmitted. Here inverter 6
Batteries 51 and 52 are connected to 1 and the operating voltage of the inverter 61 is within a range in which both batteries 51 and 52 are connected in series and in parallel.

Reference numeral 7 is a transmission / reception changeover switch, and the fixed portion of the transmission / reception changeover switch 7 is connected to the terminal S of the switching control section 6 and the input resistance R
It is connected to the positive terminal 53 of the power source section 5 via the terminal 4. Here, the transmission / reception changeover switch 7 is a push switch, and when the movable part thereof is pressed and is in the closed state, it is in the transmission state, and when it is not pressed and is in the open state, it is in the reception state.

Now, FIG. 3A shows the battery 51,
Each of the transistors Q1, Q2 when the serial-parallel connection of 52 is set,
The ON / OFF state of the switching of Q3 is shown.
In the figure, when the batteries 51 and 52 are set to be connected in series (during transmission), the transistor Q1 is turned on and both the transistors Q2 and Q3 are turned off. As a result, when the transistor Q1 is turned on, the negative electrode terminal of the battery 51 and the positive electrode terminal of the battery 52 are connected, and the battery 51 and the battery 52 are connected in series.

When the batteries 51 and 52 are set to be connected in parallel (during reception), the transistor Q1 is turned off and the transistors Q2 and Q3 are both turned on. Thereby, the negative electrode terminal of the battery 52 is connected to the ground side, the positive electrode terminal of the battery 52 is connected to the positive electrode terminal of the battery 51, and the battery 51 and the battery 52 are connected in parallel.

FIG. 3B shows the "High" and "Low" states of the potentials of the terminals A, B and C of the switching control unit 6 when the series connection of the batteries 51 and 52 is set. In the figure, when the batteries 51 and 52 are set to be connected in series,
The potential of the terminal A becomes “Low”, and the potentials of the terminals B and C both become “High”. As a result, the transistor Q
The base potential of 1 becomes "Low", and the transistor Q1
Turns on. Further, the base potentials of the transistors Q2 and Q3 become "High", and the transistors Q2 and Q3 are turned off. Therefore, the batteries 51 and 52 are connected in series as shown in FIG.

When the batteries 51 and 52 are set to be connected in parallel, the potential of the terminal A becomes "High" and the terminal B,
Both potentials of C become "Low". As a result, the base potential of the transistor Q1 becomes "High" and the transistor Q1 is turned off. Also, the transistor Q2,
The base potential of Q3 becomes "Low" and the transistor Q
2, Q3 is turned on. Therefore, the batteries 51 and 52 are connected in parallel as shown in FIG.

Therefore, when the transceiver performs the transmitting operation by the transmitting section (not shown), the user depresses the movable section of the transmission / reception changeover switch 7. Then, the terminal S of the switching control unit 6 is directly connected to the ground, and the potential becomes “Low”.

As a result, the potential of the terminal A of the switching control unit 6 also becomes "Low", and the potentials of the terminals B and C through the inverter 61 become "High". Then, the base potential of the transistor Q1 becomes "Lo
w ", and the transistor Q1 is turned on. Further, the base potentials of the transistors Q2 and Q3 become "High", and the transistors Q2 and Q3 are turned off. Therefore,
As shown in FIG. 3A, the batteries 51 and 52 are connected in series. In this case, the positive terminal 53 and the negative terminal 54 are simultaneously
Further, since the transmitter is connected by a switch (not shown), 3V as a voltage is supplied from the power supply unit body 5 to the transmitter.

Next, when the transceiver performs the receiving operation by the receiving section (not shown), the movable section of the transmission / reception changeover switch 7 is opened without being pressed by the user. Then, the potential of the positive terminal 53 of the power supply unit body 5 is given to the terminal S of the switching control unit 6 via the input resistor R4, and the potential at the terminal S becomes "High".

As a result, the potential of the terminal A of the switching control unit 6 also becomes "High", and the potentials of the terminals B and C through the inverter 61 become "Low". Then, the base potential of the transistor Q1 becomes "High", the transistor Q1 becomes OFF, the base potentials of the transistors Q2 and Q3 become "Low", and the transistors Q2 and Q3 become ON. Therefore, the batteries 51 and 52 are connected in parallel as shown in FIG.
In this case, the receiving unit is connected to the positive terminal 53 and the negative terminal 54 by a switch (not shown) at the same time, so that 1.5 V as a voltage is supplied to the receiving unit (not shown) from the power supply unit body 5.

Therefore, according to such an embodiment, the transmission / reception changeover switch 7 is pressed when the transmission operation is performed in the transmission section, and the transmission / reception changeover switch 7 is not pressed when the reception operation is performed. In this case, the switching control unit 6 connects the batteries 51 and 52 in series, and in the case of reception, switching is performed by connecting the batteries 51 and 52 in parallel using the transistors Q1, Q2, and Q3. Compared to the transceiver, the transceiver can be downsized, the cost can be reduced, and the operation can be stable, and the high voltage can be obtained by connecting the batteries 51 and 52 in series at the time of transmission that requires high voltage. During reception, a low voltage can be obtained by connecting the batteries 51 and 52 in parallel, so it does not consume more power than necessary. Thus it is possible to reduce the consumption of the battery 51, charging of the battery for a long time can continue to use the transceiver without the need of frequent replacement.

The present invention is not limited to the above-mentioned embodiments, but can be carried out by appropriately modifying it within the scope of the invention.
For example, although the transmission / reception changeover switch 7 is a mechanical switch in the second embodiment, the same operation as a switch controlled by a microcomputer can be performed.

In the above embodiment, the case where the connection state of a plurality of batteries is manually switched has been described, but it may be automatic, for example, a time division multiplex wireless system in which the operation of the transmitter and the receiver is automatically switched. The present invention can be implemented in a transmitting / receiving device and the like.

Further, although the case where the present invention is applied to the transceiver has been described in the above embodiments, the present invention can be implemented as long as it is an electronic device having a plurality of operating states with different operating voltages.

[0044]

According to the present invention, the connection state of a plurality of batteries is switched according to the operating state. Therefore, when the operation requiring a high voltage and the operating time required at a low voltage are sufficient, Since the connection state is switched, the power supply voltage is not consumed more than necessary, which reduces the consumption of the power supply battery and allows the electronic device to be used continuously for a long time without frequently charging or replacing the battery. it can.

According to the present invention, a plurality of batteries are connected in series when the operating voltage is high, and a plurality of batteries are connected in parallel when the operating voltage is low, so that a high voltage is required. High voltage can be obtained by connecting batteries in series during low-voltage operation, and low voltage can be obtained by connecting batteries in parallel at low-voltage operation, which consumes more power supply voltage than necessary. Is eliminated, which reduces the consumption of the power battery,
The electronic device can be continuously used for a long time without frequently charging or replacing the battery.

According to the present invention, the connection state of a plurality of batteries is switched according to the operating voltage when the transmitter is operated and when the receiver is operated. Since the battery connection state is switched according to the necessary and sufficient reception at a low voltage, the power supply battery will not be consumed more than necessary, which will reduce the consumption of the power supply battery and allow frequent battery charging and replacement. The wireless transmission / reception device can be continuously used for a long time without performing the operation.

According to the present invention, a plurality of batteries are connected in series when the transmitter is operated, and a plurality of batteries are connected in parallel when the receiver is operated. Therefore, the batteries are connected at the time of transmission requiring a high voltage. A high voltage can be obtained by connecting in series, and a low voltage can be obtained by connecting the batteries in parallel at the time of necessary and sufficient reception at a low voltage, so it will not consume more power battery than necessary. The consumption of the power supply battery can be reduced, and the wireless transmission / reception device can be continuously used for a long time without frequently charging or replacing the battery.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a main part of a transceiver according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a power supply unit of a transceiver according to a second embodiment.

FIG. 3 is an ON / OFF state of switching in each transistor in series connection and parallel connection in the second embodiment,
The figure which shows the High / Low state of a base electric potential.

FIG. 4 is a diagram showing a configuration of main parts of a conventional transceiver.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Power supply part, 11 ... Battery, 12 ... Battery, 13 ... Switch, 131 ... Movable piece, 132 ... Fixed piece, 133 ... Fixed piece, 14 ... Switch, 141 ... Movable piece, 142 ... Fixed piece, 143 ... Fixed piece 2 ... Send / receive switch, 21
... movable piece, 22 ... fixed piece, 23 ... fixed piece, 3 ... transmission section,
4 ... Receiving unit, 5 ... Power supply unit main body, 51 ... Battery, 52 ... Battery, 53 ... Positive terminal, 54 ... Negative terminal, Q1 ... Transistor, Q2 ... Transistor, Q3 ... Transistor, R1 ...
Base resistance, R2 ... Base resistance, R3 ... Base resistance, R
4 ... Input resistance, 6 ... Switching control section, 61 ... Inverter, A ... Terminal, B ... Terminal, C ... Terminal, S ... Terminal, 7 ...
Transmit / receive switch.

Claims (4)

[Claims] 1. An electronic device having a plurality of operating states with different operating voltages and operating from a plurality of batteries, comprising a connection switching means for switching a connecting state of the plurality of batteries according to the operating state. And electronic equipment. 2. The connection switching means connects the plurality of batteries in series when the operating voltage is high, and connects the batteries in parallel when the operating voltage is low. The electronic device according to claim 1. 3. A wireless transmission / reception apparatus having a transmitter and a receiver having different operating voltages and operated by a plurality of batteries, wherein the operating voltage is changed depending on whether the transmitter is operated or the receiver is operated. And a connection switching means for switching the connection state of the plurality of batteries. 4. The connection switching means connects the plurality of batteries in series when operating the transmitter, and connects the plurality of batteries in parallel when operating the receiver. 3. The wireless transmission / reception device according to item 3.