JPH0537408A - Operating voltage control circuit for radio equipment - Google Patents
Operating voltage control circuit for radio equipmentInfo
- Publication number
- JPH0537408A JPH0537408A JP3214141A JP21414191A JPH0537408A JP H0537408 A JPH0537408 A JP H0537408A JP 3214141 A JP3214141 A JP 3214141A JP 21414191 A JP21414191 A JP 21414191A JP H0537408 A JPH0537408 A JP H0537408A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- unit
- electric field
- field data
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Transceivers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、小形無線送受信機に用
いられる動作電圧制御回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating voltage control circuit used in a small radio transceiver.
【０００２】[0002]
【従来の技術】一般に電池による固定電圧により動作す
る無線受信機は消費電流が少なくなるように回路構成が
工夫されている。しかし、ある一定の受信感度を維持さ
せる必要があるため、消費電流を低減できる量には限界
がある。又、待ち受け状態時に受信機の電源を定期的に
オン／オフして間欠受信を行い、着呼信号を受信した時
点から所定の固定電圧動作に切替える等の方式もあるが
待ち受け状態よりも受信状態の方が長く続いた場合には
それ以上の消費電流の低減は期待できない。2. Description of the Related Art In general, a radio receiver which operates with a fixed voltage by a battery has a circuit structure devised so as to reduce current consumption. However, there is a limit to the amount by which current consumption can be reduced because it is necessary to maintain a certain reception sensitivity. There is also a method such as switching on / off the power of the receiver periodically in the standby state to perform intermittent reception and switching to a predetermined fixed voltage operation from the time when the incoming call signal is received, but the reception state is higher than the standby state. If it lasts longer, further reduction in current consumption cannot be expected.
【０００３】[0003]
【発明が解決しようとする課題】このように従来の無線
機では、受信時の消費電流は所定の電源電圧による電流
値以下にはならない。又、受信信号の有無及び通話時間
により電池動作時間が大きく影響を受けるため、特に電
池駆動の携帯用小形無線機では更に電池動作を長く維持
させる要求があるが、限界がある。本発明の目的は、こ
のような問題点を解決して消費電流を更に低減すること
のできる無線機の動作電圧制御回路を提供することにあ
る。As described above, in the conventional wireless device, the current consumption at the time of reception does not fall below the current value due to the predetermined power supply voltage. Also, since the battery operation time is greatly affected by the presence or absence of a received signal and the call time, there is a demand for maintaining the battery operation for a longer time especially in a battery-driven portable small radio, but there is a limit. An object of the present invention is to provide an operating voltage control circuit for a wireless device, which can solve such problems and further reduce current consumption.
【０００４】[0004]
【課題を解決するための手段】本発明の無線機の動作電
圧制御回路は、無線機の受信部から得られ受信電界強度
を示すＲＳＳＩ信号のレベルに応じて該受信部の動作電
圧を制御するために、前記受信部からの前記ＲＳＳＩ信
号をディジタル変換して受信電界データとして出力する
検出部と、前記無線機の電源部からの電源電圧を電圧切
替信号に従って変化させた動作電圧を前記受信部に供給
する電圧変換部と、前記ＲＳＳＩ信号の複数段階のレベ
ルにそれぞれ対応する受信電界データを基準値として予
め記憶させたメモリを備え、前記検出部からの受信電界
データと該基準値とを比較して検出部からの受信電界デ
ータが該基準値より大きいとき前記無線部に供給する動
作電圧が低くなるような前記電圧切替信号を前記電圧変
換部に与える制御部とを備えたことを特徴とするもので
ある。The operating voltage control circuit for a radio device according to the present invention controls the operating voltage of the receiving unit according to the level of the RSSI signal indicating the received electric field strength obtained from the receiving unit of the radio device. For this purpose, a detector for digitally converting the RSSI signal from the receiver and outputting it as received electric field data, and an operating voltage obtained by changing the power supply voltage from the power supply of the radio device according to a voltage switching signal are received by the receiver. And a memory that stores in advance received electric field data corresponding to a plurality of levels of the RSSI signal as reference values, and compares the received electric field data from the detection section with the reference values. And a control for giving the voltage conversion signal to the voltage conversion unit so that the operating voltage supplied to the radio unit becomes low when the received electric field data from the detection unit is larger than the reference value. It is characterized in that it comprises and.
【０００５】[0005]
【実施例】図１は本発明の実施例を示す無線機の部分回
路ブロック図である。図において、１はアンテナ、２は
受信部、３は送信部であり、この無線機が受信専用であ
れば送信部３はない。また、４は受信電界強度に対応す
る受信信号強度指示信号（ＲＳＳＩ信号：Receive Sign
al Strength Indicator 信号）をディジタル変換する検
出部である。５は制御部、６は電圧変換部である。1 is a partial circuit block diagram of a wireless device showing an embodiment of the present invention. In the figure, 1 is an antenna, 2 is a receiving section, 3 is a transmitting section, and if this radio is dedicated to reception, there is no transmitting section 3. Further, 4 is a received signal strength indication signal (RSSI signal: Receive Sign) corresponding to the received electric field strength.
This is a detection unit that digitally converts the al Strength Indicator signal). Reference numeral 5 is a control unit, and 6 is a voltage conversion unit.
【０００６】アンテナ１から受信部２へ入力された受信
波は、検波復調されて音声信号を出力するとともにＲＳ
ＳＩ信号を出力して検出部４に与える。検出部４でディ
ジタル信号に変換された受信電界データは、制御部５に
入力される。制御部５には例えばＣＰＵ５１とメモリ５
２が備えられ、メモリ５２（例えばＥ2 Ｐ−ＲＯＭ）に
は、受信部２の動作電圧を変えるために受信電界データ
の複数段階のレベルに対応する基準データが予め記憶さ
れており、検出部４からの受信電界データとその基準デ
ータとが比較され電圧変換部６に対して電圧切替信号を
出力する。電圧変換部６は制御部５からの電圧切替信号
に従って電源回路からの電圧Ｂを電圧変換した電圧Ｖを
受信部２に印加する。The received wave input from the antenna 1 to the receiving section 2 is detected and demodulated to output a voice signal and RS.
The SI signal is output and given to the detection unit 4. The received electric field data converted into a digital signal by the detector 4 is input to the controller 5. The control unit 5 includes, for example, a CPU 51 and a memory 5
2, the memory 52 (for example, E 2 P-ROM) stores in advance reference data corresponding to a plurality of levels of the received electric field data in order to change the operating voltage of the receiving unit 2, and the detecting unit. The received electric field data from 4 and the reference data thereof are compared and a voltage switching signal is output to the voltage conversion unit 6. The voltage conversion unit 6 applies to the reception unit 2 a voltage V obtained by converting the voltage B from the power supply circuit according to the voltage switching signal from the control unit 5.
【０００７】次に、上述の電圧切替動作を詳細に説明す
る。図２は本発明の動作を説明する特性図であり、受信
部２に印加する電圧Ｖをパラメータにした受信電界強度
に対するＲＳＳＩ信号レベルの特性を示す。図中のＡ〜
Ｆの各点におけるＲＳＳＩ信号レベルのデータを基準デ
ータとして制御部５のメモリ５２に予め書込んでおき、
例えば受信部２の動作電圧ＶがＶ１，Ｖ２，Ｖ３の３段
階における比較データとして使用する。受信部２の動作
電圧値Ｖ１，Ｖ２，Ｖ３の関係はＶ１＞Ｖ２＞Ｖ３であ
る。Ｖ１は図中のＱ１がオンした時の受信部２への印加
電圧である。Ｖ２はＱ１がオフでＱ２がオンした時の電
圧である。この時電流はＲ１とＲ２を介して流れるため
Ｖ１より低い電圧となる。Ｖ３はＱ１，Ｑ２共にオフの
ときの電圧である。電流はＲ２のみを介して流れるため
受信部２へ印加される電圧はＶ２よりも低くなる。Next, the above voltage switching operation will be described in detail. FIG. 2 is a characteristic diagram for explaining the operation of the present invention, and shows the characteristic of the RSSI signal level with respect to the received electric field strength with the voltage V applied to the receiver 2 as a parameter. A in the figure
Data of the RSSI signal level at each point of F is written in the memory 52 of the control unit 5 in advance as reference data,
For example, the operating voltage V of the receiver 2 is used as comparison data in three stages of V1, V2 and V3. The relationship between the operating voltage values V1, V2 and V3 of the receiver 2 is V1>V2> V3. V1 is a voltage applied to the receiver 2 when Q1 in the figure is turned on. V2 is the voltage when Q1 is off and Q2 is on. At this time, since the current flows through R1 and R2, the voltage becomes lower than V1. V3 is a voltage when both Q1 and Q2 are off. Since the current flows only through R2, the voltage applied to the receiver 2 becomes lower than V2.
【０００８】無線機が動作中制御部は、常に検出部４か
らの受信電界データはメモリ５２の基準データとの比較
が行われ、比較される受信電界データがＡ点の値以下な
らば受信機の電圧はＶ１とＶ３の間で交互に切替えら
れ、間欠受信状態を続ける。受信波が入力され検出部４
からの受信電界データがＡ点の値を超えたとき制御部５
のＣＰＵ５１は間欠受信を中断し、受信機２の動作電圧
をＶ１のレベルにするように電圧変換部６を制御する。
又、その後の受信電界データがＢ点の値を超えたときは
Ｖ２へ、Ｃ点の値を超えたときはＶ３へと印加電圧を制
御する。While the radio is operating, the control section constantly compares the received electric field data from the detection section 4 with the reference data in the memory 52. If the compared received electric field data is less than the value at point A, the receiver The voltage of is alternately switched between V1 and V3 to continue the intermittent reception state. Received wave is input and detection unit 4
When the received electric field data from the data exceeds the value at point A, the control unit 5
The CPU 51 stops the intermittent reception and controls the voltage conversion unit 6 so that the operating voltage of the receiver 2 becomes the level of V1.
When the received electric field data thereafter exceeds the value at point B, the applied voltage is controlled to V2, and when it exceeds the value at point C, the applied voltage is controlled to V3.
【０００９】無線機がＶ３の電圧で動作中に受信電界強
度がＦ点の値より低下したときは、受信部２の動作電圧
はＶ２へ切替えられ、またＶ２で動作中にＤ点の値より
低下した場合はＶ１へ切替えられる。When the received electric field strength is lower than the value at the point F while the radio is operating at the voltage V3, the operating voltage of the receiver 2 is switched to V2, and the value at the point D is changed during the operation at V2. When it decreases, it is switched to V1.
【００１０】このように、受信電界強度の大小に応じて
受信機の動作電圧を昇降切替制御することにより移動機
が送信局に近くて電界強度が大きいときは受信部２の動
作電圧を低くして消費電流を低減することができる。以
上の実施例の説明は受信部２の消費電流を低減する場合
について述べたが、無線機が送受信機の場合には同様の
手段により送信部３の消費電流を低減することができる
ことはいうまでもない。また、電圧の切替段階は実施例
のように３段階に限らず任意に設定すればよい。As described above, the operating voltage of the receiver is controlled to be raised or lowered according to the magnitude of the received electric field strength, so that the operating voltage of the receiver 2 is lowered when the mobile station is close to the transmitting station and the electric field strength is large. Current consumption can be reduced. In the above description of the embodiment, the case where the current consumption of the receiving unit 2 is reduced has been described, but it goes without saying that the current consumption of the transmitting unit 3 can be reduced by the same means when the wireless device is a transceiver. Nor. Further, the voltage switching stage is not limited to three stages as in the embodiment and may be set arbitrarily.
【００１１】[0011]
【発明の効果】以上詳細に説明したように、本発明を実
施することにより次の効果が得られる。 （１）送受信中の消費電流を低減することができるため
電池による動作時間が長くなる。 （２）間欠受信のみの従来方式では受信状態での消費電
流を低減することができなかったが、受信信号の有無に
かかわらず低減することができる。 （３）従来、電界強度の表示のみに使用していたＲＳＳ
Ｉ信号を利用し無線機に備えられたＣＰＵを利用するこ
とにより本発明の制御機能を容易に付加することができ
るため構成部品を低減することができる。As described in detail above, the following effects can be obtained by implementing the present invention. (1) Since the current consumption during transmission / reception can be reduced, the operation time of the battery becomes long. (2) The current consumption in the receiving state could not be reduced by the conventional method of only intermittent reception, but it can be reduced regardless of the presence or absence of a received signal. (3) RSS that was conventionally used only to display the electric field strength
Since the control function of the present invention can be easily added by utilizing the I signal and the CPU provided in the wireless device, the number of components can be reduced.
【図１】本発明の実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
【図２】本発明の動作を説明する特性図である。FIG. 2 is a characteristic diagram illustrating an operation of the present invention.
１ アンテナ ２ 受信部 ３ 送信部 ４ 検出部 ５ 制御部 ６ 電圧変換部 ５１ ＣＰＵ ５２ メモリ 1 Antenna 2 Receiver 3 Transmitter 4 Detector 5 Controller 6 Voltage Converter 51 CPU 52 Memory
Claims (1)
を示すＲＳＳＩ信号のレベルに応じて該受信部の動作電
圧を制御するために、 前記受信部からの前記ＲＳＳＩ信号をディジタル変換し
て受信電界データとして出力する検出部と、 前記無線機の電源部からの電源電圧を電圧切替信号に従
って変化させた動作電圧を前記受信部に供給する電圧変
換部と、 前記ＲＳＳＩ信号の複数段階のレベルにそれぞれ対応す
る受信電界データを基準値として予め記憶させたメモリ
を備え、前記検出部からの受信電界データと該基準値と
を比較して検出部からの受信電界データが該基準値より
大きいとき前記無線部に供給する動作電圧が低くなるよ
うな前記電圧切替信号を前記電圧変換部に与える制御部
とを備えた無線機の動作電圧制御回路。Claim: What is claimed is: 1. In order to control the operating voltage of the receiving unit according to the level of the RSSI signal obtained from the receiving unit of the radio and indicating the received electric field strength, the RSSI from the receiving unit is controlled. A detection unit that digitally converts the signal and outputs it as received electric field data; a voltage conversion unit that supplies an operating voltage obtained by changing a power supply voltage from the power supply unit of the wireless device according to a voltage switching signal to the reception unit; A memory having previously stored, as reference values, received electric field data respectively corresponding to a plurality of levels of a signal is provided, and the received electric field data from the detection unit is compared by comparing the received electric field data from the detection unit with the reference value. An operating voltage control of a wireless device, comprising: a control unit that gives the voltage conversion signal to the voltage conversion unit such that the operating voltage supplied to the wireless unit becomes lower when the value is larger than the reference value. Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3214141A JP2943822B2 (en) | 1991-08-01 | 1991-08-01 | Operating voltage control circuit for radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3214141A JP2943822B2 (en) | 1991-08-01 | 1991-08-01 | Operating voltage control circuit for radio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0537408A true JPH0537408A (en) | 1993-02-12 |
| JP2943822B2 JP2943822B2 (en) | 1999-08-30 |
Family
ID=16650908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3214141A Expired - Fee Related JP2943822B2 (en) | 1991-08-01 | 1991-08-01 | Operating voltage control circuit for radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2943822B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09107299A (en) * | 1995-10-12 | 1997-04-22 | Saitama Nippon Denki Kk | Receiving amplifier |
| EP1204213A1 (en) * | 2000-06-12 | 2002-05-08 | Mitsubishi Denki Kabushiki Kaisha | Mobile wireless communication device |
| WO2004091110A1 (en) * | 2003-04-07 | 2004-10-21 | Mitsubishi Denki Kabushiki Kaisha | Transmission/reception device and reception device |
| CN100444528C (en) * | 2004-07-01 | 2008-12-17 | 天宇通信集团有限公司 | Transmit-receiving device and power control circuit and power control method |
-
1991
- 1991-08-01 JP JP3214141A patent/JP2943822B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09107299A (en) * | 1995-10-12 | 1997-04-22 | Saitama Nippon Denki Kk | Receiving amplifier |
| EP1204213A1 (en) * | 2000-06-12 | 2002-05-08 | Mitsubishi Denki Kabushiki Kaisha | Mobile wireless communication device |
| EP1204213A4 (en) * | 2000-06-12 | 2005-03-30 | Mitsubishi Electric Corp | Mobile wireless communication device |
| WO2004091110A1 (en) * | 2003-04-07 | 2004-10-21 | Mitsubishi Denki Kabushiki Kaisha | Transmission/reception device and reception device |
| WO2004091111A1 (en) * | 2003-04-07 | 2004-10-21 | Mitsubishi Denki Kabushiki Kaisha | Transceiver and receiver |
| CN100444528C (en) * | 2004-07-01 | 2008-12-17 | 天宇通信集团有限公司 | Transmit-receiving device and power control circuit and power control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2943822B2 (en) | 1999-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |