JP3059885B2 - Battery level detection device for mobile phones - Google Patents
Battery level detection device for mobile phonesInfo
- Publication number
- JP3059885B2 JP3059885B2 JP6108525A JP10852594A JP3059885B2 JP 3059885 B2 JP3059885 B2 JP 3059885B2 JP 6108525 A JP6108525 A JP 6108525A JP 10852594 A JP10852594 A JP 10852594A JP 3059885 B2 JP3059885 B2 JP 3059885B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply voltage
- battery
- transmitting
- tdma
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディジタルコードレス
電話やディジタルセルラー電話等のような、充電可能な
電池によって駆動される携帯電話器に用いるバッテリ残
量検出装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting the remaining amount of a battery used in a portable telephone driven by a rechargeable battery, such as a digital cordless telephone and a digital cellular telephone.
【０００２】[0002]
【従来の技術】携帯電話器においては、充電機能を有す
るニッケル・カドミウム電池や、ニッケル・水素電池等
が用いられるのが一般的である。このような電池は、最
大充電できる容量が限られており、ある程度使用すると
急速にその電圧が低下し、機器に対する電源供給機能を
果たさなくなる。そこで、例えば実開昭５９−１６６５
５２号公報（Ｈ０４Ｍ１／３１）に記載されているよう
に、このような携帯電話器では電池の残量が少なくなっ
たことを検知して警報を発したり、その旨の表示を行っ
たりするよう構成される。2. Description of the Related Art In a portable telephone, a nickel-cadmium battery or a nickel-hydrogen battery having a charging function is generally used. Such a battery has a limited maximum chargeable capacity, and when used to some extent, its voltage rapidly drops, so that the battery cannot function as a power supply to the device. Therefore, for example, Japanese Utility Model Application Laid-Open No. 59-1665.
As described in Japanese Unexamined Patent Publication No. 52 (H04M1 / 31), such a mobile phone detects that the remaining battery level is low, and issues an alarm or displays an indication to that effect. Be composed.
【０００３】一方、音声信号をディジタルに変換して通
信を行うディジタルコードレス電話器やディジタルセル
ラー電話器等が開発されており、このようなシステムで
は、待ち受け時は基地局もしくは親機から間欠的に送信
される制御情報に基づいて子機が制御されるとともに、
通話時は音声通話のためのＰＣＭデータまたはその他の
データなどを送受信で異なるタイムスロットで交互にＴ
ＤＭＡ動作により伝送する。On the other hand, digital cordless telephones, digital cellular telephones, and the like that perform communication by converting voice signals into digital have been developed. In such a system, a base station or a base unit intermittently waits for a call. The slave unit is controlled based on the transmitted control information,
During a call, PCM data or other data for voice communication is alternately transmitted and received in different time slots during transmission and reception.
It is transmitted by the DMA operation.
【０００４】そして、このような携帯電話器では電池の
消費電流をなるべく小さくするために、待ち受け時は間
欠受信動作を行う。間欠受信動作時は、数十ｍｓから数
百ｍｓ程度に１回受信動作を行えばよいので平均の消費
電流を小さく抑えることができる。一方、通話時は５ｍ
ｓ毎に送信と受信が各々１回あり、その時は送信パワー
アンプなどの無線部を動作させる必要がある。また信号
処理部や音声信号増幅回路に常時電流を流しておく必要
があり、待ち受け時よりはるかに消費電流が大きい。In such portable telephones, an intermittent reception operation is performed during standby to minimize the current consumption of the battery. During the intermittent reception operation, the reception operation only needs to be performed once every several tens to several hundreds of ms, so that the average current consumption can be reduced. On the other hand, when talking, 5m
There is one transmission and one reception every s, in which case it is necessary to operate a radio unit such as a transmission power amplifier. In addition, it is necessary to always supply a current to the signal processing unit and the audio signal amplifier circuit, which consumes much more current than in the standby mode.
【０００５】待ち受け時または通話時に、どれだけの時
間待ち受け状態または通話状態を維持することが可能か
ということを電池の端子電圧を検出して判断し、これを
表示することは可能である。しかし、従来の方法では、
図３に示すように、電源電圧の読み込みは、一定周期で
電圧値をサンプルし、複数個のデータを平均する等する
ことにより行われてきた。すなわち、ＴＤＭＡ動作で、
ＴＸとは移動機より基地局への電波送信期間、ＲＸとは
逆に受信期間、アイドル期間とは送受信ともにしていな
い期間である。ＴＤＭＡ動作では、このＴＸ、ＲＸ、ア
イドル期間が、数十ｍｓｅｃ周期で繰り返される（デジ
タルセルラー電話では現在20msec周期）。このＴＸ期間
で送信アンプを駆動するため、消費電力量がパルス的に
増大し、電源電圧はパルス的に低下する。[0005] It is possible to detect the terminal voltage of the battery to determine how long a standby state or a call state can be maintained during a standby state or a call state, and to display this. However, in the conventional method,
As shown in FIG. 3, the reading of the power supply voltage has been performed by sampling a voltage value at a constant period and averaging a plurality of data. That is, in TDMA operation,
TX is a period during which radio waves are transmitted from the mobile station to the base station, a reception period, as opposed to RX, and an idle period, during which transmission and reception are not performed. In the TDMA operation, the TX, RX, and idle periods are repeated at a period of several tens of msec (currently, a digital cellular telephone has a period of 20 msec). Since the transmission amplifier is driven during this TX period, the power consumption increases in a pulsed manner, and the power supply voltage decreases in a pulsed manner.
【０００６】ところが従来技術では、電力消費の動作と
電源電圧の読み込み動作の同期をとっていないため、電
源電圧の読み込みデータを平均しても誤差が大きくな
る。しかも、システム動作が支障を来すのは、電源電圧
が最小となる期間であるが、このことを認識していない
ため実際には装置全体で電源電圧低下による誤動作がお
こっていても、装置全体を制御するマイコンではまだ電
源電圧は危険な状態にまでは下がりきっていないと判断
する可能性があった。However, in the prior art, since the operation of power consumption and the operation of reading the power supply voltage are not synchronized, an error becomes large even if the power supply voltage read data is averaged. Moreover, the system operation is hindered during the period when the power supply voltage is at a minimum. Since this fact is not recognized, even if a malfunction occurs due to a drop in the power supply voltage in the entire apparatus, The microcomputer that controls the power supply may have determined that the power supply voltage has not yet dropped to a dangerous state.
【０００７】[0007]
【発明が解決しようとする課題】本発明は上述の従来技
術を改善するものであり、正確に電池の残量を検出する
ことの出来る携帯電話機を実現するものである。SUMMARY OF THE INVENTION The present invention is an improvement of the above-mentioned prior art, and is intended to realize a portable telephone capable of accurately detecting the remaining battery level.
【０００８】[0008]
【課題を解決するための手段】本発明によるバッテリ残
量検出装置は、充電可能なバッテリに駆動され、待ち受
け時は基地局から間欠的に送信される制御情報に基づい
て制御されるとともに通話時は音声通話のためのＰＣＭ
データまたはその他のデータなどを送受信で異なるタイ
ムスロットで交互に伝送するＴＤＭＡ方式の携帯電話機
のバッテリ残量検出装置において、送受信を行うタイム
スロットを制御するＴＤＭＡ処理回路と、該ＴＤＭＡ処
理回路によって決定される送受信タイミングに同期し、
その送信期間に前記バッテリの端子電圧を計測する電源
電圧測定手段と、該電源電圧測定手段によって計測され
た端子電圧に基づいて電源電圧を監視する制御手段を有
することを特徴とするものである。A battery remaining amount detecting device according to the present invention is driven by a rechargeable battery, and is controlled based on control information intermittently transmitted from a base station during standby and at the time of talking. Is PCM for voice calls
A TDMA processing circuit for controlling a time slot for transmission / reception, and a TDMA processing circuit for controlling a time slot for transmission / reception, in a TDMA type mobile phone battery remaining amount detecting device for alternately transmitting data or other data in different time slots for transmission and reception. Synchronized with the transmission / reception timing
A power supply voltage measuring means for measuring the terminal voltage of the battery during the transmission period, and a control means for monitoring the power supply voltage based on the terminal voltage measured by the power supply voltage measuring means.
【０００９】[0009]
【作用】タイムスロットを制御するＴＤＭＡ処理回路に
よって決定される送信タイミングに同期して、消費電力
量が最大となるタイミングに電源電圧が測定される。The power supply voltage is measured at the timing when the power consumption becomes maximum in synchronization with the transmission timing determined by the TDMA processing circuit that controls the time slot.
【００１０】[0010]
【実施例】以下図面にしたがって、本発明をデジタル携
帯電話の移動機に用いた実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a mobile device of a digital portable telephone will be described below with reference to the drawings.
【００１１】図１は本発明を用いた携帯電話機を示すブ
ロック図である。まず、受信側においては、アンテナ１
から入力された高周波信号（以下、ＲＦ信号という）
は、受信系ＲＦ・ＩＦ部２にて入力受信ＲＦ信号だけが
取り出され増幅されるようになっている。このとき、Ｒ
Ｆ・ＩＦ部２では、ＰＬＬ周波数シンセサイザ（可変分
周器）３によって発生される基準クロックとＲＦアンプ
からのＲＦ信号とをＭＩＸ回路でミキシングし、トラン
ジスタの非直線部分を使って発生する周波数スペクトラ
ムの差分のみをＩＦフィルタ、ＩＦアンプ回路を通して
取り出すようになっている。この取り出された周波数信
号を復調器４で、π／４シフト４相ＱＰＳＫ復調する。
この信号をＴＤＭＡ処理回路５によってＴＤＭＡ処理を
行う。このＴＤＭＡ処理後に、音声信号部分はＶＳＥＬ
Ｐ処理の後、Ｄ／Ａ変換器６によりアナログ信号に変換
する。音声信号は、増幅、ＢＰＦ制御の音声処理回路７
で処理され、スピ−カなどに供給できるような信号とす
るための増幅処理やインピ−ダンス変換後、受話スピー
カ８もしくはリンガースピーカ９より出力される。FIG. 1 is a block diagram showing a portable telephone using the present invention. First, on the receiving side, the antenna 1
High-frequency signal (hereinafter referred to as RF signal)
The receiving system RF / IF unit 2 extracts and amplifies only the input received RF signal. At this time, R
In the F / IF unit 2, a reference clock generated by a PLL frequency synthesizer (variable frequency divider) 3 and an RF signal from an RF amplifier are mixed by a MIX circuit, and a frequency spectrum generated by using a non-linear portion of a transistor is used. Is taken out through an IF filter and an IF amplifier circuit. The extracted frequency signal is demodulated by a π / 4 shift four-phase QPSK demodulator 4.
This signal is subjected to TDMA processing by a TDMA processing circuit 5. After this TDMA processing, the audio signal portion is VSEL
After the P processing, the signal is converted into an analog signal by the D / A converter 6. The audio signal is amplified and BPF controlled audio processing circuit 7
After being subjected to amplification processing and impedance conversion for obtaining a signal that can be supplied to a speaker or the like, the signal is output from the receiving speaker 8 or the ringer speaker 9.
【００１２】また、メッセ−ジなどの制御デ−タは、復
調の後に、制御回路１０からの制御信号により、ゲート
アレイやＤＳＰ（ディジタルシグナルプロセッサ）など
で構成されるデータ復調回路により復号や誤り訂正など
の処理が行われ、このデ−タ（メッセ−ジなど）に基づ
いた処理を制御回路１０が行う。After demodulation, control data such as a message is decoded and error-corrected by a data demodulation circuit composed of a gate array, a DSP (Digital Signal Processor) or the like in accordance with a control signal from the control circuit 10. Processing such as correction is performed, and the control circuit 10 performs processing based on the data (such as a message).
【００１３】一方、送信側においては、ユ−ザより発せ
られたマイク１１からの音声信号を音声処理回路７で音
声を電気信号に変換し、Ａ／Ｄ回路１２でデジタル信号
に変換され、ＶＳＥＬＰの処理をする。また、メッセー
ジなどのデ−タについては、制御回路１０からのコント
ロールよりデータ変調回路においてコード変換や誤り訂
正が行われる。また、音声やデータのデジタルデータ
は、ＴＤＭＡ処理回路１３、π／４シフト４相ＱＰＳＫ
の変調回路１４で変調をかけられ、更に、設定チャンネ
ルに応じた信号とミキシングされる。そして、送信系Ｒ
Ｆ・ＩＦ部１５にて必要な周波数成分だけがＲＦフィル
タＲＦアンプ回路で取り出され、さらに、パワーアンプ
で電力増幅され、出力分だけを効率良くアンテナ１を通
して送出するようになっている。On the other hand, on the transmitting side, the audio signal from the microphone 11 emitted from the user is converted into an electric signal by the audio processing circuit 7 and converted into a digital signal by the A / D circuit 12. Process. For data such as messages, code conversion and error correction are performed in the data modulation circuit under the control of the control circuit 10. Also, digital data such as voice and data is transferred to a TDMA processing circuit 13, a π / 4 shift four-phase QPSK.
Is modulated by the modulation circuit 14 and mixed with a signal corresponding to the set channel. And the transmission system R
Only necessary frequency components are extracted by the F / IF unit 15 by the RF filter RF amplifier circuit, and further power-amplified by the power amplifier, and only the output component is efficiently transmitted through the antenna 1.
【００１４】この送信期間が消費電力極大となり、電源
電圧は極小区間となる。１６は、ＬＥＤやＬＣＤなどの
表示素子のコントロール、入力されるキーの制御を行う
キー部、及び揮発性、不揮発性メモリ部である。１７は
充電可能なバッテリであり、電源部１８を介して各回路
ブロックに電源を供給する。１９は電源電圧測定手段で
あり、ＴＤＭＡ処理の送信期間と同期して電源電圧を測
定することが可能であり、測定結果は制御部につたえ
る。During this transmission period, the power consumption becomes maximum, and the power supply voltage becomes a minimum section. Reference numeral 16 denotes a key unit for controlling display elements such as LEDs and LCDs and for controlling input keys, and a volatile and nonvolatile memory unit. Reference numeral 17 denotes a rechargeable battery, which supplies power to each circuit block via a power supply unit 18. Reference numeral 19 denotes a power supply voltage measuring means, which can measure the power supply voltage in synchronization with the transmission period of the TDMA process, and supplies the measurement result to the control unit.
【００１５】図２を用いて本発明の電源電圧測定手段に
ついて説明する。図に示すように、ＴＸ期間では送信ア
ンプを駆動するため、消費電力量がパルス的に増大し、
バッテリ１７および電源部１８回路の内部抵抗により、
電源電圧はパルス的に低下する。電源電圧測定手段１９
は、ＴＤＭＡ処理回路１３より送信期間のタイミングを
教えてもらい、これに同期してスイッチ２０をＯＮ／Ｏ
ＦＦしサンプル・ホールド回路２１により電源電圧のサ
ンプルホールドを行う。そして、これをＡ／Ｄ変換器２
２によりデジタルデータに変換するとともに制御回路１
０に送る。制御回路１０では、複数個のデータの平均化
等の処理の後に送信期間中の電源電圧が装置全体の動作
可能な電圧以上であるか否かを判定し、その結果を表示
部１６にて表示を行うかもしくはスピーカ９により警告
音を発する。The power supply voltage measuring means of the present invention will be described with reference to FIG. As shown in the figure, in the TX period, since the transmission amplifier is driven, the power consumption increases in a pulsed manner,
Due to the internal resistance of the battery 17 and the power supply 18 circuit,
The power supply voltage drops in a pulsed manner. Power supply voltage measuring means 19
Receives the transmission period timing from the TDMA processing circuit 13 and turns on / off the switch 20 in synchronization with this.
The FF is performed and the sample and hold circuit 21 samples and holds the power supply voltage. Then, the A / D converter 2
2 and the control circuit 1
Send to 0. The control circuit 10 determines whether the power supply voltage during the transmission period is equal to or higher than the operable voltage of the entire device after processing such as averaging a plurality of data, and displays the result on the display unit 16. Or a warning sound is emitted from the speaker 9.
【００１６】[0016]
【発明の効果】以上説明したように本発明による携帯電
話機のバッテリ残量検出装置によれば、ＴＤＭＡ動作等
によりパルス状に消費電力の増大するような装置でも、
誤差の少ない安定した電源電圧の判定が可能となる。ま
た、装置全体の動作として危険な状態である消費電力増
大時の電源電圧を特に監視することにより、電源電圧低
下による装置の誤動作を未然に防止することが可能とな
る。As described above, according to the battery residual amount detecting device for a portable telephone according to the present invention, even if the power consumption increases in a pulsed manner due to TDMA operation or the like,
It is possible to determine a stable power supply voltage with a small error. Further, by particularly monitoring the power supply voltage when the power consumption is increased, which is a dangerous state as the operation of the entire apparatus, it is possible to prevent a malfunction of the apparatus due to a decrease in the power supply voltage.
【図１】本発明を用いた携帯電話の移動機の構成を示し
たブロック図である。FIG. 1 is a block diagram showing a configuration of a mobile device of a mobile phone using the present invention.
【図２】本発明による携帯電話の移動機の動作タイミン
グチャートである。FIG. 2 is an operation timing chart of the mobile device of the mobile phone according to the present invention.
【図３】従来技術による携帯電話の移動機の動作タイミ
ングチャートである。FIG. 3 is an operation timing chart of a mobile device of a mobile phone according to the related art.
１０ 制御回路 １３ ＴＤＭＡ処理回路 １７ バッテリ １８ 電源部 １９ 電源電圧測定手段 Reference Signs List 10 control circuit 13 TDMA processing circuit 17 battery 18 power supply unit 19 power supply voltage measuring means
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H04B 7/24 - 7/26 H04M 1/00 H04Q 7/00 - 7/38 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H04B 7 /24-7/26 H04M 1/00 H04Q 7/00-7/38
Claims (1)
け時は基地局から間欠的に送信される制御情報に基づい
て制御されるとともに通話時は音声通話のためのＰＣＭ
データまたはその他のデータなどを送受信で異なるタイ
ムスロットで交互に伝送するＴＤＭＡ方式の携帯電話機
のバッテリ残量検出装置において、 送受信を行うタイムスロットを制御するＴＤＭＡ処理回
路と、 該ＴＤＭＡ処理回路によって決定される送受信タイミン
グに同期し、その送信期間に前記バッテリの端子電圧を
計測する電源電圧測定手段と、 該電源電圧測定手段によって計測された端子電圧に基づ
いて電源電圧を監視する制御手段を有することを特徴と
する携帯電話機のバッテリ残量検出装置。The PCM is driven by a rechargeable battery, is controlled on the basis of control information intermittently transmitted from a base station during standby, and is used for voice communication during a call.
A TDMA processing circuit for controlling a time slot for transmitting and receiving, and a TDMA processing circuit for controlling a time slot for transmitting and receiving in a TDMA type mobile phone battery remaining amount detecting device for transmitting data or other data alternately in different time slots for transmitting and receiving. Power supply voltage measurement means for measuring the terminal voltage of the battery during the transmission period in synchronization with the transmission / reception timing, and control means for monitoring the power supply voltage based on the terminal voltage measured by the power supply voltage measurement means. A battery level detection device for a mobile phone, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6108525A JP3059885B2 (en) | 1994-05-23 | 1994-05-23 | Battery level detection device for mobile phones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6108525A JP3059885B2 (en) | 1994-05-23 | 1994-05-23 | Battery level detection device for mobile phones |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07321724A JPH07321724A (en) | 1995-12-08 |
| JP3059885B2 true JP3059885B2 (en) | 2000-07-04 |
Family
ID=14487020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6108525A Expired - Fee Related JP3059885B2 (en) | 1994-05-23 | 1994-05-23 | Battery level detection device for mobile phones |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3059885B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6433512B1 (en) | 1999-01-27 | 2002-08-13 | Telefonaktebolaget L M Ericsson (Publ) | Power consumption reporting by an accessory of an electronic device |
| GB2368495B (en) | 2000-10-23 | 2004-06-30 | Ericsson Telefon Ab L M | Monitoring circuit |
| JP5181536B2 (en) * | 2007-05-30 | 2013-04-10 | 富士通モバイルコミュニケーションズ株式会社 | Wireless device |
| JP5435112B2 (en) * | 2012-12-03 | 2014-03-05 | 富士通モバイルコミュニケーションズ株式会社 | Wireless device |
| CN105842624A (en) * | 2015-01-14 | 2016-08-10 | 宝创企业股份有限公司 | Mobile power device suitable for measuring capacities of other mobile power supplies |
-
1994
- 1994-05-23 JP JP6108525A patent/JP3059885B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07321724A (en) | 1995-12-08 |
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