JP2003344096A - Electric measuring apparatus - Google Patents

Electric measuring apparatus

Info

Publication number
JP2003344096A
JP2003344096A JP2002148928A JP2002148928A JP2003344096A JP 2003344096 A JP2003344096 A JP 2003344096A JP 2002148928 A JP2002148928 A JP 2002148928A JP 2002148928 A JP2002148928 A JP 2002148928A JP 2003344096 A JP2003344096 A JP 2003344096A
Authority
JP
Japan
Prior art keywords
storage means
power storage
charging
circuit
power source
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.)
Pending
Application number
JP2002148928A
Other languages
Japanese (ja)
Inventor
Takayuki Kurashima
孝行 倉島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hioki EE Corp
Original Assignee
Hioki EE Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hioki EE Corp filed Critical Hioki EE Corp
Priority to JP2002148928A priority Critical patent/JP2003344096A/en
Publication of JP2003344096A publication Critical patent/JP2003344096A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Secondary Cells (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent noise currents caused by an AC power source from flowing in the measuring circuit of an electric measuring apparatus which uses the AC power source as a power source, even in an environment where only a power source 2P is available, and grounding is impossible. <P>SOLUTION: The measuring apparatus is provided with a first power storage means 121 and a second power storage means 122 which are used as power sources for the measuring circuit 110, and a charging circuit 130 which charges each storage means 121, 122 by the AC power source E. Charging-side switching means SW1, SW2 and discharge-side switching means SW3, SW4 are changed over properly by a switching control means 140 according to the quantity of the stored electricity of each means 121, 122. The measuring circuit 110 is operated by one of the power storage means, and the other power storage means is charged by the charging circuit 130, and this operation is performed repeatedly. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、AC電源(ACア
ダプタを含む)により駆動される電気測定器に関し、さ
らに詳しく言えば、特に電源2P使用時におけるノイズ
対策に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric measuring instrument driven by an AC power source (including an AC adapter), and more particularly to noise countermeasures when using a power source 2P.

【0002】[0002]

【従来の技術】図3に模式的に示すように、電気測定器
には、大別して測定信号入力部10と測定器本体20と
が含まれている。測定信号入力部10には、被測定物の
物理量を検出するための種々のセンサもしくはプローブ
が接続されるが、この例では、測定信号入力部10に熱
電対からなる温度センサSを接続した場合を示す。
2. Description of the Related Art As schematically shown in FIG. 3, an electric measuring instrument is roughly divided into a measuring signal input section 10 and a measuring instrument main body 20. Various sensors or probes for detecting the physical quantity of the object to be measured are connected to the measurement signal input unit 10. In this example, when a temperature sensor S consisting of a thermocouple is connected to the measurement signal input unit 10. Indicates.

【0003】すなわち、この例の電気測定器は温度測定
器で、測定信号入力部10は、温度センサSから出力さ
れる検出信号を差動アンプ11で受け、その差動出力を
A/D変換器12にてディジタル信号に変換して測定器
本体20に与える。
That is, the electrical measuring instrument of this example is a temperature measuring instrument, and the measurement signal input section 10 receives a detection signal output from the temperature sensor S by a differential amplifier 11 and A / D-converts the differential output. It is converted into a digital signal by the instrument 12 and given to the measuring instrument body 20.

【0004】図示しないが、測定器本体20には、CP
Uなどの演算手段やメモリ、それにディスプレイやプリ
ンタなどの表示器などが設けられており、測定器本体2
0は、測定信号入力部10からの測定信号を所定に処理
して、被測定物の温度値やその変位量などを表示する。
Although not shown, the measuring device main body 20 has a CP
The measuring device main body 2 is provided with a computing means such as U and a memory, and a display device such as a display and a printer.
0 displays the temperature value of the object to be measured and its displacement amount by processing the measurement signal from the measurement signal input unit 10 in a predetermined manner.

【0005】電気測定器には電源Eが必要とされるが、
一部携帯式のものを除いて、ほとんどが壁コンセントの
商用電源(AC100V)から駆動電源を得るようにし
ている。図3は、電源2P使用時の場合を示している。
ここで、電源2Pとはホット側とコールド側の2ピンを
有する電源プラグを介して壁コンセント(もしくは電源
タップ)からAC電源を得る場合を指している。
A power supply E is required for the electric measuring instrument,
Most of them, except for some portable ones, are powered from a wall outlet commercial power source (100 VAC). FIG. 3 shows a case where the power supply 2P is used.
Here, the power supply 2P refers to a case where AC power is obtained from a wall outlet (or a power tap) via a power plug having two pins on the hot side and the cold side.

【0006】[0006]

【発明が解決しようとする課題】通常の設計では、測定
信号入力部10と測定器本体20は電気的な絶縁を図る
ため別基板とされ、信号の授受には例えばホトカプラを
用い、電源に関してはトランスを介するようにしてい
る。
In the usual design, the measurement signal input section 10 and the measuring instrument main body 20 are separate boards for the purpose of electrical insulation, and for example, a photocoupler is used for exchanging signals, and a power supply is used. I am going through a transformer.

【0007】しかしながら、電源2P使用時には、測定
器本体20が大地から見ておよそAC50Vの電位を持
つことになる(AC100V電源使用時)。したがっ
て、測定信号入力部10と測定器本体20とが電気的に
絶縁されていても、例えばトランスに存在する結合容量
を介してAC50Vによる電流が測定信号入力部10の
入力ラインに流れるループ(図3の鎖線参照)ができ
る。
However, when the power supply 2P is used, the measuring device main body 20 has a potential of about AC50V when viewed from the ground (when AC100V power supply is used). Therefore, even if the measurement signal input unit 10 and the measuring device main body 20 are electrically insulated from each other, for example, a loop in which a current of AC50V flows to the input line of the measurement signal input unit 10 via the coupling capacitance existing in the transformer (see FIG. 3 (see the chain line).

【0008】これがノイズ電流となり測定に悪影響をお
よぼす(特に、熱電対からなる温度センサSを使用する
場合に顕著な影響を受ける)。このノイズ現象は、使用
する電源が電源2PであるかぎりACアダプタ使用時で
も同様に発生する。なお、電源3P時には、電源の中点
がアースに落とされ、測定器本体20の電位が大地と同
一となるため、電源2Pの場合に比べてノイズ電流によ
る影響は少なくなる。
This becomes a noise current and adversely affects the measurement (particularly, it is significantly affected when the temperature sensor S including a thermocouple is used). This noise phenomenon similarly occurs when the AC adapter is used as long as the power source used is the power source 2P. At the time of the power supply 3P, the midpoint of the power supply is dropped to the ground, and the potential of the measuring device main body 20 becomes the same as the ground. Therefore, the influence of noise current is smaller than that in the case of the power supply 2P.

【0009】このように、電源2Pしか得られない環
境、また、接地できない環境下では、測定信号入力部1
0と測定器本体20とを電気的に絶縁しても、結合容量
がゼロでないかぎり、測定信号入力部10側にノイズ電
流が流れ、測定の信頼性が損なわれることになる。
As described above, in an environment in which only the power supply 2P is available, or in an environment in which grounding is not possible, the measurement signal input unit 1
Even if 0 is electrically insulated from the measuring device main body 20, unless the coupling capacitance is zero, a noise current flows on the measurement signal input unit 10 side, and the reliability of measurement is impaired.

【0010】したがって、本発明の課題は、電源2Pし
か得られない環境、また、接地できない環境下において
も、測定回路にAC電源に起因するノイズ電流が流れな
いようにすることにある。
Therefore, an object of the present invention is to prevent a noise current due to an AC power supply from flowing in the measuring circuit even in an environment where only the power supply 2P can be obtained or an environment in which grounding is not possible.

【0011】[0011]

【課題を解決するための手段】上記課題を解決するた
め、本発明は、被測定物の物理量が電気信号として入力
され、その入力信号を所定のパラメータに変換処理して
出力する測定回路を含み、電源としてAC電源を用いる
電気測定器において、上記測定回路の電源として用いら
れる第1および第2の2つの蓄電手段と、上記AC電源
より上記各蓄電手段を充電する充電回路と、上記第1お
よび第2蓄電手段を上記充電回路に交代的に接続する充
電側スイッチ手段と、上記第1および第2蓄電手段を上
記測定回路に交代的に接続する放電側スイッチ手段と、
上記各蓄電手段の蓄電量を監視し、その蓄電量に応じ
て、上記各蓄電手段の充電と放電とが交互に行われるよ
うに上記各スイッチ手段を切り替えるスイッチ制御手段
とを備えていることを特徴としている。
In order to solve the above problems, the present invention includes a measurement circuit in which a physical quantity of an object to be measured is input as an electric signal, and the input signal is converted into a predetermined parameter and output. In an electric measuring instrument using an AC power source as a power source, first and second power storage means used as a power source for the measurement circuit, a charging circuit for charging each power storage means from the AC power source, and the first power storage means. And charging side switch means for alternately connecting the second storage means to the charging circuit, and discharging side switch means for alternately connecting the first and second storage means to the measurement circuit.
A switch control means for monitoring the amount of electricity stored in each of the electricity storage means, and switching the respective switch means so that the electricity storage means is alternately charged and discharged according to the electricity storage amount. It has a feature.

【0012】上記スイッチ制御手段により上記各蓄電手
段の充電と放電とを交互に行わせるにあたって、本発明
には次の2つの態様が含まれる。第1の態様において
は、放電により残存蓄電量が所定値以下になった上記一
方の蓄電手段を上記測定回路から切り離して上記充電回
路に接続するとともに、上記他方の蓄電手段を上記充電
回路から切り離して上記測定回路に接続する。
The present invention includes the following two modes in order to alternately charge and discharge the respective power storage means by the switch control means. In the first aspect, the one storage means whose remaining storage amount has become a predetermined value or less due to discharge is disconnected from the measurement circuit and connected to the charging circuit, and the other storage means is disconnected from the charging circuit. And connect to the above measurement circuit.

【0013】第2の態様として、充電により満蓄電状態
に至った上記一方の蓄電手段を上記充電回路から切り離
して上記測定回路に接続するとともに、上記他方の蓄電
手段を上記測定回路から切り離して上記充電回路に接続
する。
As a second aspect, the one storage means which has reached a full storage state by charging is disconnected from the charging circuit and connected to the measuring circuit, and the other storage means is disconnected from the measuring circuit. Connect to the charging circuit.

【0014】上記各蓄電手段は、二次電池もしくはコン
デンサのいずれであってもよいが、コンデンサを用いる
場合には、静電容量が大きな電気二重層コンデンサが好
ましい。また、充電方式としては、二次電池の場合は定
電圧充電、コンデンサの場合は定電流充電が好ましい。
Each of the storage means may be a secondary battery or a capacitor, but when a capacitor is used, an electric double layer capacitor having a large capacitance is preferable. As a charging method, constant voltage charging is preferable for a secondary battery and constant current charging is preferable for a capacitor.

【0015】本発明によれば、AC電源は充電用として
のみ用いられ、測定回路の駆動電源は蓄電手段より得る
ため、ノイズ電流のループがなくなり、電源2Pしか得
られない環境、また、接地できない環境下においても、
信頼性の高い測定値が得られる。
According to the present invention, the AC power source is used only for charging, and the driving power source for the measuring circuit is obtained from the power storage means, so that the loop of noise current is eliminated, only the power source 2P can be obtained, and it cannot be grounded. Even in the environment
A reliable measurement value is obtained.

【0016】また、蓄電手段が交互に充電されるため、
その駆動時間を気にする必要なく、長時間にわたって測
定することも可能である。なお、本発明は電源3Pを使
用する場合を排除するものではない。
Further, since the storage means are charged alternately,
It is also possible to measure for a long time without having to worry about the driving time. The present invention does not exclude the case where the power source 3P is used.

【0017】[0017]

【発明の実施の形態】次に、図1および図2により、本
発明の実施形態について説明する。図1は、本発明に係
る電気測定器100の模式図であって、測定器内に測定
回路110の電源として用いられる2つの蓄電手段12
1,122と、AC電源Eから蓄電手段121,122
を充電する充電回路130とが設けられている。
BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram of an electric measuring device 100 according to the present invention, in which two power storage means 12 used as a power source for a measuring circuit 110 in the measuring device are provided.
1, 122 and the AC power source E to the power storage means 121, 122
And a charging circuit 130 for charging the.

【0018】この電気測定器100も、先の図3で説明
した測定信号入力部10と測定器本体20とを備えてい
るが、この場合、測定回路110には測定信号入力部1
0と測定器本体20の双方が含まれてもよいし、測定信
号入力部10のみが含まれていてもよい。
The electrical measuring instrument 100 also includes the measuring signal input section 10 and the measuring instrument main body 20 described above with reference to FIG. 3, but in this case, the measuring circuit 110 includes the measuring signal input section 1
0 and the measuring device main body 20 may be included, or only the measurement signal input unit 10 may be included.

【0019】すなわち、蓄電手段121,122は測定
信号入力部10と測定器本体20に対して共通の電源と
して用いられてよいし、測定信号入力部10専用の電源
として用いられてよい。なお、測定回路110が測定す
る対象は、電圧,電流,抵抗,温度などであってよく特
に制限はない。
That is, the storage means 121, 122 may be used as a common power source for the measurement signal input section 10 and the measuring device main body 20, or may be used as a dedicated power source for the measurement signal input section 10. The measurement target of the measurement circuit 110 may be voltage, current, resistance, temperature, etc. and is not particularly limited.

【0020】この例において、蓄電手段121,122
にはバッテリ(二次電池)が用いられているため、以
下、バッテリ121,122として説明するが、これに
代えてコンデンサ(好ましくは、電気二重層コンデン
サ)が用いられてもよい。また、AC電源Eは商用電源
(AC100V)であってよい。
In this example, the storage means 121, 122
Since a battery (secondary battery) is used for the battery, a battery 121, 122 will be described below, but a capacitor (preferably an electric double layer capacitor) may be used instead. Further, the AC power source E may be a commercial power source (AC100V).

【0021】バッテリ121,122は、充電回路13
0と測定回路110との間に並列的に接続されている。
すなわち、バッテリ121,122の電源入力側の各々
はスイッチSW1,SW2(充電側スイッチ)を介して
充電回路130に接続され、バッテリ121,122の
電源出力側の各々はスイッチSW3,SW4(放電側ス
イッチ)を介して測定回路110に接続されている。
The batteries 121 and 122 are the charging circuit 13
0 and the measuring circuit 110 are connected in parallel.
That is, the power input sides of the batteries 121 and 122 are connected to the charging circuit 130 via the switches SW1 and SW2 (charge side switches), and the power output sides of the batteries 121 and 122 are connected to the switches SW3 and SW4 (discharge side). It is connected to the measuring circuit 110 via a switch.

【0022】また、この電気測定器100は、上記スイ
ッチSW1〜SW4の切り替えを制御するスイッチ制御
手段140を備えている。この例において、スイッチ制
御手段140は、バッテリ121,122の電圧(蓄電
量)を監視し、その電圧が所定値以下となった場合に切
り替え信号を出力するCPUからなる。
The electrical measuring instrument 100 also comprises a switch control means 140 for controlling the switching of the switches SW1 to SW4. In this example, the switch control unit 140 includes a CPU that monitors the voltage (charge storage amount) of the batteries 121 and 122 and outputs a switching signal when the voltage becomes a predetermined value or less.

【0023】動作について説明すると、図1に示すよう
に、スイッチSW1がオフ,スイッチSW3がオンで一
方のバッテリ121より測定回路110に電源が与えら
れ、これに対して、スイッチSW2がオン,スイッチS
W4がオフで他方のバッテリ122が充電回路130に
より充電されているものとする。
To explain the operation, as shown in FIG. 1, when the switch SW1 is off and the switch SW3 is on, power is supplied to the measuring circuit 110 from one battery 121, while the switch SW2 is on and the switch SW2 is on. S
It is assumed that W4 is off and the other battery 122 is charged by the charging circuit 130.

【0024】この状態で、測定回路110を駆動してい
る一方のバッテリ121が消耗し、その残存電圧が所定
値以下となると、スイッチ制御手段140は、スイッチ
SW1をオン,スイッチSW3をオフとして一方のバッ
テリ121を測定回路110から切り離して充電回路1
30に接続する。
In this state, when one of the batteries 121 driving the measuring circuit 110 is exhausted and the remaining voltage becomes less than a predetermined value, the switch control means 140 turns on the switch SW1 and turns off the switch SW3. The charging circuit 1 by disconnecting the battery 121 from the measurement circuit 110
Connect to 30.

【0025】これと同時に、スイッチSW2をオフ,ス
イッチSW4をオンとして他方のバッテリ122を充電
回路130から切り離して測定回路110に接続する。
これを繰り返すことにより、いずれか一方のバッテリに
て測定回路110を常に駆動する。
At the same time, the switch SW2 is turned off and the switch SW4 is turned on to disconnect the other battery 122 from the charging circuit 130 and connect it to the measuring circuit 110.
By repeating this, one of the batteries always drives the measurement circuit 110.

【0026】上記実施形態では、いずれか一方のバッテ
リの残存電圧が所定値以下となった時点でスイッチを切
り替えるようにしているが、これとは別の態様として、
充電されている側のバッテリが満充電状態になった時点
でスイッチを切り替えるようにしてもよい。なお、満充
電とは定格電圧もしくはユーザーが任意に定めた電圧値
にまで充電された状態を言う。
In the above embodiment, the switch is switched when the remaining voltage of either one of the batteries becomes equal to or less than the predetermined value. However, as another mode,
The switch may be switched when the battery on the charged side is fully charged. The full charge means a state in which the battery is charged up to a rated voltage or a voltage value arbitrarily set by the user.

【0027】すなわち、例えば図1に示すように、一方
のバッテリ121が放電状態で、他方のバッテリ122
が充電状態にあるとき、他方のバッテリ122が満充電
状態になった時点で、このバッテリ122を充電回路1
30から切り離して測定回路110に接続するととも
に、一方のバッテリ121を測定回路110から切り離
して充電回路130に接続する。以後、これを繰り返
す。
That is, for example, as shown in FIG. 1, one battery 121 is in a discharged state and the other battery 122 is
Is in a charging state, when the other battery 122 is fully charged, the battery 122 is charged with the charging circuit 1.
The battery 121 is separated from 30 and connected to the measurement circuit 110, and one battery 121 is separated from the measurement circuit 110 and connected to the charging circuit 130. After that, this is repeated.

【0028】また、スイッチに関して、上記実施形態で
はスイッチSW1〜SW4の4つのスイッチを用いてい
るが、図2に示すように、充電側,放電側ともに2接点
選択式スイッチSWc,SWdを採用することにより、
2つのスイッチで済ますこともできる。
Regarding the switches, although four switches SW1 to SW4 are used in the above embodiment, as shown in FIG. 2, two-contact selection type switches SWc and SWd are used for both the charging side and the discharging side. By
You can do it with two switches.

【0029】さらに、上記実施形態では、スイッチ制御
手段140を単独機能的に備えているが、例えば充電回
路130にバッテリ121,122の電圧監視機能とス
イッチSW1〜SW4(もしくはスイッチSWc,SW
d)の切り替え機能とを持たせることもできる。
Further, in the above embodiment, the switch control means 140 is independently provided, but for example, the charging circuit 130 has a voltage monitoring function for the batteries 121 and 122 and switches SW1 to SW4 (or switches SWc and SW).
It is also possible to provide the switching function of d).

【0030】また、バッテリ121,122の充電方式
は一般的に定電圧充電によるが、バッテリに代えて蓄電
手段としてコンデンサを使用する場合の充電方式は定電
流充電とすることが充電効率上好ましい。
The charging method for the batteries 121 and 122 is generally constant voltage charging, but it is preferable to use constant current charging as the charging method when a capacitor is used as a storage means instead of the battery in terms of charging efficiency.

【0031】[0031]

【発明の効果】以上説明したように、本発明によれば、
電源としてAC電源を用いる電気測定器において、測定
回路の電源として用いられる第1および第2の蓄電手段
と、AC電源より各蓄電手段を充電する充電回路とを備
え、スイッチ制御手段により各蓄電手段の電圧に応じて
充電側スイッチ手段および放電側スイッチ手段を適宜切
り替えて、いずれか一方の蓄電手段により測定回路を駆
動し、いずれか他方の蓄電手段を充電回路により充電す
ることを繰り返して行うようにしたことにより、電源2
Pしか得られない環境、また、接地できない環境下にお
いても、測定回路にAC電源に起因するノイズ電流が流
れないようにして信頼性の高い測定値が得られるととも
に、蓄電手段が交互に充電されるため、その駆動時間を
気にする必要なく、長時間にわたって測定することがで
きる、という効果が奏される。
As described above, according to the present invention,
An electric measuring instrument using an AC power source as a power source includes first and second power storage means used as a power source of a measuring circuit, and a charging circuit for charging each power storage means from an AC power source, and each power storage means by a switch control means. The charging-side switching means and the discharging-side switching means are appropriately switched according to the voltage of, and the measuring circuit is driven by either one of the storage means, and the other charging means is charged by the charging circuit repeatedly. Power supply 2
Even in an environment in which only P can be obtained or in an environment in which grounding is not possible, a highly reliable measurement value is obtained by preventing the noise current due to the AC power source from flowing through the measurement circuit, and the storage means is charged alternately. Therefore, it is possible to perform the measurement for a long time without having to worry about the driving time.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による電気測定器の実施形態を説明する
ための模式図。
FIG. 1 is a schematic diagram for explaining an embodiment of an electric measuring device according to the present invention.

【図2】上記実施形態で用いられるスイッチの別の例を
示す模式図。
FIG. 2 is a schematic diagram showing another example of a switch used in the above embodiment.

【図3】従来例としての電気測定器の回路構成図。FIG. 3 is a circuit configuration diagram of an electrical measuring device as a conventional example.

【符号の説明】[Explanation of symbols]

100 電気測定器 110 測定回路 121,122 バッテリ 130 充電回路 140 スイッチ制御手段 100 electric measuring instrument 110 measuring circuit 121,122 battery 130 charging circuit 140 switch control means

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 被測定物の物理量が電気信号として入力
され、その入力信号を所定のパラメータに変換処理して
出力する測定回路を含み、電源としてAC電源を用いる
電気測定器において、 上記測定回路の電源として用いられる第1および第2の
2つの蓄電手段と、上記AC電源より上記各蓄電手段を
充電する充電回路と、上記第1および第2蓄電手段を上
記充電回路に交代的に接続する充電側スイッチ手段と、
上記第1および第2蓄電手段を上記測定回路に交代的に
接続する放電側スイッチ手段と、上記各蓄電手段の蓄電
量を監視しその蓄電量に応じて、上記各蓄電手段の充電
と放電とが交互に行われるように上記各スイッチ手段を
切り替えるスイッチ制御手段とを備えていることを特徴
とする電気測定器。
1. An electrical measuring instrument, comprising: a physical quantity of an object to be measured as an electric signal, converting the input signal into a predetermined parameter and outputting the electric signal, wherein an AC power source is used as a power source. First and second power storage means used as a power source for the battery, a charging circuit for charging the power storage means from the AC power source, and the first and second power storage means alternately connected to the charging circuit. Charging side switch means,
Discharge side switch means for alternately connecting the first and second power storage means to the measurement circuit, and monitoring the power storage amount of each power storage means, and charging and discharging of each power storage means according to the power storage amount. An electric measuring instrument, comprising: a switch control means for switching each of the above-mentioned switch means so as to be alternately performed.
【請求項2】 上記スイッチ制御手段は、放電により残
存蓄電量が所定値以下になった上記一方の蓄電手段を上
記測定回路から切り離して上記充電回路に接続するとと
もに、上記他方の蓄電手段を上記充電回路から切り離し
て上記測定回路に接続する請求項1に記載の電気測定
器。
2. The switch control means disconnects the one power storage means whose remaining power storage amount has become a predetermined value or less by discharging from the measurement circuit and connects the power storage means to the charging circuit, and connects the other power storage means to the above power storage means. The electric measuring instrument according to claim 1, wherein the electric measuring instrument is separated from the charging circuit and is connected to the measuring circuit.
【請求項3】 上記スイッチ制御手段は、充電により満
蓄電状態に至った上記一方の蓄電手段を上記充電回路か
ら切り離して上記測定回路に接続するとともに、上記他
方の蓄電手段を上記測定回路から切り離して上記充電回
路に接続する請求項1に記載の電気測定器。
3. The switch control means disconnects the one storage means, which has reached a fully charged state by charging, from the charging circuit and connects the measurement circuit with the other storage means, and disconnects the other storage means from the measurement circuit. The electric measuring instrument according to claim 1, which is connected to the charging circuit.
【請求項4】 上記各蓄電手段が二次電池からなる請求
項1,2または3に記載の電気測定器。
4. The electric measuring instrument according to claim 1, wherein each of the storage means is a secondary battery.
【請求項5】 上記各蓄電手段がコンデンサからなる請
求項1,2または3に記載の電気測定器。
5. The electric measuring instrument according to claim 1, 2 or 3, wherein each of the storage means is a capacitor.
JP2002148928A 2002-05-23 2002-05-23 Electric measuring apparatus Pending JP2003344096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002148928A JP2003344096A (en) 2002-05-23 2002-05-23 Electric measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002148928A JP2003344096A (en) 2002-05-23 2002-05-23 Electric measuring apparatus

Publications (1)

Publication Number Publication Date
JP2003344096A true JP2003344096A (en) 2003-12-03

Family

ID=29767281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002148928A Pending JP2003344096A (en) 2002-05-23 2002-05-23 Electric measuring apparatus

Country Status (1)

Country Link
JP (1) JP2003344096A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010098874A (en) * 2008-10-17 2010-04-30 Willcom Inc Mobile communication terminal
JP2014196930A (en) * 2013-03-29 2014-10-16 住友重機械工業株式会社 Charge/discharge inspection system and calibration device of charge/discharge inspection device
JP2015534038A (en) * 2012-07-02 2015-11-26 ゼンジリオン・アーゲー Portable electronic devices
JP5948518B1 (en) * 2016-02-04 2016-07-06 本田技研工業株式会社 Power storage device, transport device having the power storage device, failure determination method, and failure determination program
JP2017103897A (en) * 2015-12-01 2017-06-08 オムロン株式会社 Battery charger, battery charging system and battery charging method
WO2021250979A1 (en) * 2020-06-09 2021-12-16 株式会社スリーダム Power supply system, mobile object, and power supply system control method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010098874A (en) * 2008-10-17 2010-04-30 Willcom Inc Mobile communication terminal
JP2015534038A (en) * 2012-07-02 2015-11-26 ゼンジリオン・アーゲー Portable electronic devices
US9966783B2 (en) 2012-07-02 2018-05-08 Sensirion Ag Portable electronic device
KR101909950B1 (en) * 2012-07-02 2018-10-19 센시리온 에이지 Portable electronic device
JP2014196930A (en) * 2013-03-29 2014-10-16 住友重機械工業株式会社 Charge/discharge inspection system and calibration device of charge/discharge inspection device
JP2017103897A (en) * 2015-12-01 2017-06-08 オムロン株式会社 Battery charger, battery charging system and battery charging method
WO2017094431A1 (en) * 2015-12-01 2017-06-08 オムロン株式会社 Battery charging device, battery charging system and battery charging method
US10688876B2 (en) 2015-12-01 2020-06-23 Omron Corporation Battery charging device, battery charging system, and battery charging method
JP5948518B1 (en) * 2016-02-04 2016-07-06 本田技研工業株式会社 Power storage device, transport device having the power storage device, failure determination method, and failure determination program
JP2017138241A (en) * 2016-02-04 2017-08-10 本田技研工業株式会社 Power storage device, transportation apparatus having power storage device, failure determination method, and failure determination program
WO2021250979A1 (en) * 2020-06-09 2021-12-16 株式会社スリーダム Power supply system, mobile object, and power supply system control method

Similar Documents

Publication Publication Date Title
US6445162B1 (en) Detecting a remaining battery capacity and a battery remaining capacity circuit
US5625237A (en) Remove power source device having improved capacity indication capability, and an electronic device using the removable power source device
JPH06217464A (en) Auxiliary battery unit and charge/discharge control method
JP3782479B2 (en) Charger
US6163132A (en) Battery charging status indicator apparatus
JP4270154B2 (en) Battery voltage detection controller
WO1998056059A1 (en) Method for detecting capacity of battery, battery package, and electronic equipment system
JP2001281307A (en) Battery capacity detecting method
JP4421070B2 (en) Laminate voltage measuring device
US7635972B2 (en) Rechargeable powering system in an electricity meter
JP2010080141A (en) Multi-series multi-parallel battery pack
JP2003344096A (en) Electric measuring apparatus
JP5332062B2 (en) Uninterruptible power supply system and battery charging method
KR101569216B1 (en) Battery pack
JP2004341592A (en) Electronic equipment system
JP3544626B2 (en) Battery voltage detecting means, battery pack, battery management device, and battery voltage detecting method used therefor
TW200905947A (en) Apparatus and method for measuring internal resistance of battery
JPH0572303A (en) Battery remainder detection mechanism and battery charging mechanism of information-processing device
JP2010246214A (en) Device for regulating and monitoring battery voltage
KR100280415B1 (en) Uninterruptible power supply
US20070063672A1 (en) Rechargeable battery pack and electrical hand tool device
JPH02119069A (en) Battery checker
JP2003337148A (en) Electronic apparatus
EP1199767B1 (en) Battery operable device with battery state-of-charge indicator
US6639407B1 (en) Charging/discharging electrical energy indication apparatus and electrical energy calculation method for use in the apparatus

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050516

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080123

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080206

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080407

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081029

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20090401