JPS5915880A - Apparatus or recording data of magnetometer - Google Patents
Apparatus or recording data of magnetometerInfo
- Publication number
- JPS5915880A JPS5915880A JP57126588A JP12658882A JPS5915880A JP S5915880 A JPS5915880 A JP S5915880A JP 57126588 A JP57126588 A JP 57126588A JP 12658882 A JP12658882 A JP 12658882A JP S5915880 A JPS5915880 A JP S5915880A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- field value
- control circuit
- value
- compensation
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D9/00—Recording measured values
- G01D9/02—Producing one or more recordings of the values of a single variable
- G01D9/10—Producing one or more recordings of the values of a single variable the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time
- G01D9/16—Producing one or more recordings of the values of a single variable the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time recording occurring at separated intervals, e.g. by chopper bar
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Recording Measured Values (AREA)
- Measuring Magnetic Variables (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、地磁気変動などを検出して記録する磁力計
のデータ記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data recording device for a magnetometer that detects and records geomagnetic fluctuations and the like.
一般に、地磁気変動のように変化量がなだらかな比較的
変動周波数の低い物理量を測定して記録する場合、その
測定値をＡ ／ Ｄ変換してそのまま記録すると、高分
解能が要求されたとき、必要ビット数が多くなシ、記憶
容量が大きくなっていた。Generally, when measuring and recording a physical quantity that changes gradually and has a relatively low fluctuation frequency, such as geomagnetic fluctuations, if the measured value is A/D converted and recorded as is, it will not be necessary when high resolution is required. The larger the number of bits, the larger the storage capacity.
これでは、装置自体が大型化して取扱いが不便であシ、
逆に、小型化すると容量不足となシ、長時間の連続測定
などが行なえないという問題があった。特に、海底に沈
めて地磁気を測定する磁力計のデータ記録装置にあって
は、海底への降下並びに引上げなどの作業を要する関係
上、装置自体が取扱い便利な小型であることが望ましい
。そのため電源や記録装置もできるだけ小さい礒のであ
ることが必要である。This makes the device itself large and inconvenient to handle.
On the other hand, miniaturization has the problem of insufficient capacity and the inability to perform long-term continuous measurements. In particular, in the case of a data recording device for a magnetometer that is sunk to the ocean floor to measure geomagnetism, it is desirable that the device itself be small enough to be easily handled, since it requires work such as lowering to the ocean floor and pulling it up. Therefore, it is necessary that the power supply and recording device be as small as possible.
そこで、これらの要望を充足する新たなデータ記録装置
の出現が叫ばれている。Therefore, there is a call for the emergence of a new data recording device that satisfies these demands.
この発明は、かかる点に鑑みてなされたもので。This invention was made in view of this point.
磁気センサの検出信号をサンプリングし、補償後の各サ
ンプル値とその前のサンプル値との変化量を−次メモリ
に一旦記憶し、この−次メモリのデータを間欠的に記録
手段に記録することにより。The detection signal of the magnetic sensor is sampled, the amount of change between each sample value after compensation and the previous sample value is temporarily stored in a second memory, and the data in this second memory is intermittently recorded in a recording means. By.
小さな記憶容量で大量の測定敏を記録する一方。While recording a large amount of measurement sensitivity with a small storage capacity.
電力供給も間欠的に行うようにして小型で且つ取扱いを
便利にした磁力計のデータ記録装置を提供するものであ
る。The present invention provides a magnetometer data recording device that is compact and convenient to handle by supplying power intermittently.
以下９図面に示す実施例に基づいてこの発明の詳細な説
明する。The present invention will be described in detail below based on embodiments shown in nine drawings.
第１図及び第２図に示すように、１は磁力計のデータ記
録装置であって、海底に沈められて地磁気などを検出し
て記録するものである。このデータ記課装置１は、磁気
検知手段２と記録手段３と電力供給手段４とよ多構成さ
れている。As shown in FIGS. 1 and 2, 1 is a magnetometer data recording device, which is sunk in the ocean floor to detect and record geomagnetism and the like. This data recording device 1 is composed of a magnetic detection means 2, a recording means 3, and a power supply means 4.
この磁気検知手段２は、磁界を検出する磁気センサ５を
備えておシ、この磁気センサ５には検出コイ／Ｖ５１Ｌ
と補償コイル５ｂと励振コイル５ｃとが設けられ、励振
コイル５Ｃによｐ生じた磁束が検出磁気によって変化す
るのを検出コイ／１１５ａで検出するようになっている
。検出コイル５ａには信号変換回路６．Ａ／Ｄ変換回路
７．計測制御回路８及び−次メモリ９が順に連繋されて
いる。This magnetic detection means 2 is equipped with a magnetic sensor 5 that detects a magnetic field, and this magnetic sensor 5 has a detection coil/V51L.
A compensation coil 5b and an excitation coil 5c are provided, and the detection coil 115a detects changes in the magnetic flux generated by the excitation coil 5C due to the detected magnetism. The detection coil 5a includes a signal conversion circuit 6. A/D conversion circuit 7. A measurement control circuit 8 and a second memory 9 are connected in sequence.
信号変換回路６は検出コイル５ａの出力を電気信号に変
換するものであシ、Ａ／Ｄ変換回路７はこの信号変換回
路６からの検出信号・をデジタル量に変換している。The signal conversion circuit 6 converts the output of the detection coil 5a into an electrical signal, and the A/D conversion circuit 7 converts the detection signal from the signal conversion circuit 6 into a digital quantity.
計測制御回路８は１例えばマイクロコンピュータで構成
されておｐ、Ａ／Ｄ変換回路７からの検出信−号をサン
プリングするようになっている。また、この計測制御回
路８は、定磁界値Ｂの補償信号を出力するもので、任意
の直を定磁界値Ｂとし。The measurement control circuit 8 is composed of a microcomputer, for example, and is adapted to sample the detection signal from the A/D conversion circuit 7. Further, this measurement control circuit 8 outputs a compensation signal of a constant magnetic field value B, and an arbitrary direction is taken as the constant magnetic field value B.
例えば最初検出した全磁界値Ｍを定磁界値Ｂとするよう
になっている。そして、この計測制御回路８はＤ ／
Ａ変換回路１０及び定磁界補償回路１１を順に介して補
償コイル５１）に連繋され、補償信号はＤ ／ Ａ変換
回路１０にてアナログ量に変換され、定磁界補償回路１
１が補償コイ／１１５ｂに補償電流を流すようになって
いる。この補償コイ）Ｖ５ｂの作動によシ全磁界値Ｍよ
り定磁界値Ｂが打ち消され、検出コイル５ａが定磁界値
Ｂを基準にした変動磁界値りを検出するようになってい
る。For example, the first detected total magnetic field value M is set as the constant magnetic field value B. This measurement control circuit 8 is D/
The compensation signal is connected to the compensation coil 51) via the A conversion circuit 10 and the constant magnetic field compensation circuit 11 in this order, and the compensation signal is converted into an analog quantity by the D/A conversion circuit 10.
1 causes a compensation current to flow through the compensation coil/115b. By the operation of the compensating coil V5b, the constant magnetic field value B is canceled out from the total magnetic field value M, and the detection coil 5a detects a varying magnetic field value with the constant magnetic field value B as a reference.
更に、前記計測制御回路ａｉｌ−ｊ：、補償後の各サン
プル値、つまυ変動磁界値Ｄ ｉ −４−１をそのサン
プリングした＠回の変動磁界値Ｄｉと比較してその変化
量Ｓｉ＋１を信号として一次メモリ９に出力するように
なっている。Furthermore, the measurement control circuit ail-j: compares each sample value after compensation, i.e., υ varying magnetic field value D i -4-1, with the varying magnetic field value Di of the sampled @ time, and outputs the amount of change Si+1 as a signal. It is designed to be output to the primary memory 9 as a file.
一次メモリ９は９例えばＲＡＭで構成されており、計測
制御回路８の変化量信号を一定の時間分（例えば２４時
間分）記憶するようになっている。The primary memory 9 is composed of, for example, a RAM, and is configured to store the change amount signal of the measurement control circuit 8 for a certain period of time (for example, 24 hours).
また、−次メモリ９は、計測制御回路８が比較する変動
磁界値りを記憶するようになっておシ、比較の毎に新た
な変動磁界値りを一次記憶する。Further, the -order memory 9 stores the fluctuating magnetic field values to be compared by the measurement control circuit 8, and temporarily stores a new fluctuating magnetic field value for each comparison.
繋されている。このデータ記録制御回路１２は。It's connected. This data recording control circuit 12 is.
−次メモリ９のデータをデータ記録部１３へ所定時間毎
に転送制御するもので、このデータをデータ記録部１３
が記録するようになっている。- Controls the transfer of data in the next memory 9 to the data recording section 13 at predetermined time intervals, and transfers this data to the data recording section 13.
is set to be recorded.
前記電力供給手段４は、電源１４と電源制御回路１５と
より構成され、磁気検知手段２及び記録手段３に電力供
給を間欠的に行うものである。この電源制御回路１５は
電源１４０オン・オフ制御を行うもので、計測制御回路
８からの制御信号によって作動し、磁気検知手段２へは
９例えば１５０秒のサンプリング間隔で６秒間作動し、
記録手段６へもデータの記録時にのみ作動電圧を供給す
るようになっている。The power supply means 4 is composed of a power supply 14 and a power supply control circuit 15, and supplies power to the magnetic detection means 2 and the recording means 3 intermittently. This power supply control circuit 15 performs on/off control of the power supply 140, and is operated by a control signal from the measurement control circuit 8, and operates for 6 seconds at a sampling interval of 150 seconds, for example, to the magnetic detection means 2.
The operating voltage is also supplied to the recording means 6 only when recording data.
尚、１６は励振コイ）ｖ５ｃに連繋された励振回路であ
って、励振コイＩＶ５ｃに交流電流を供給する。Note that 16 is an excitation circuit connected to the excitation coil IV5c, which supplies an alternating current to the excitation coil IV5c.
定磁界補償値を精度よく測定しようとすると。When trying to accurately measure the constant magnetic field compensation value.
ビット数の大きなＡ／Ｄ変換回路あるいは測定レンジの
切換回路が必要になるので、この装置ではＤ／Ａ変換回
路１０の設定値を計測制御回路８で適当々アルゴリズム
にしだがって求めて設定し。Since an A/D conversion circuit with a large number of bits or a measurement range switching circuit is required, in this device, the setting value of the D/A conversion circuit 10 is determined and set by the measurement control circuit 8 according to an appropriate algorithm. .
Ａ／Ｄｉ換回路７の出力が０または一定の範囲になった
ときのＤ／Ａ変換回路１ｏの設定値を定磁界補償値とし
て一時メモリ９及びデータ記録部１６に記憶しておく。The set value of the D/A converter circuit 1o when the output of the A/Di converter circuit 7 is 0 or within a certain range is temporarily stored in the memory 9 and the data recording section 16 as a constant magnetic field compensation value.
というのは定磁界補償値が設定されていない間はＡ／Ｄ
変換回路７の出力はオーバフローしていることが多いた
めである。This is because while the constant magnetic field compensation value is not set, the A/D
This is because the output of the conversion circuit 7 often overflows.
このようにして得られた補償信号はＤ／Ａ変換回路１０
によりアナログ量に変換され、定磁界補償回路１１が補
償電流を補償コイ／ｌ１５ｂに供給する。この補償コイ
／Ｌ’５ｂへの電流供給により、以後、検出コイ／ｌ１
５ａが検出する検出値は全磁界値Ｍより定磁界値Ｂ分打
ち消された変動磁界値りとなる。The compensation signal obtained in this way is sent to the D/A conversion circuit 10.
The constant magnetic field compensation circuit 11 supplies the compensation current to the compensation coil/l 15b. By supplying current to this compensation coil/L'5b, the detection coil/l1
The detection value detected by 5a is a varying magnetic field value which is the total magnetic field value M canceled by the constant magnetic field value B.
この変動磁界値りの検出信号が計測制御回路８に入力さ
れると、計測制御回路８は前回サンプリングした変動磁
界値Ｄｉを一次メモリ９より受けて、今回サンプリング
した変動磁界値Ｄｉ＋１と比較し、その変化量Ｓｉ ＋
１を出力する。When this detection signal of the fluctuating magnetic field value is input to the measurement control circuit 8, the measurement control circuit 8 receives the fluctuating magnetic field value Di sampled last time from the primary memory 9, and compares it with the fluctuating magnetic field value Di+1 sampled this time. The amount of change Si +
Outputs 1.
続いて、−次メモリ９はこの変化量Ｓを順次記憶すると
共に、前回の変動磁界値Ｄ１に代えて今回の変動磁界値
Ｄｉ＋１を記憶する。Subsequently, the negative memory 9 sequentially stores the amount of change S, and also stores the current changing magnetic field value Di+1 in place of the previous changing magnetic field value D1.
この上記動作を順次間欠的に繰シ返すことになり、この
動作時のみ電源制御回路１５から電力が供給される。This operation is repeated intermittently in sequence, and power is supplied from the power supply control circuit 15 only during this operation.
次に、−次メモリ９が記憶して所定時経過すると、デー
タ記録制御回路１２の制御信号に基づいて一次メモリ９
のデータがデータ記録部１３に記録される。この際にも
記録手段６が作動する場合のみ電源制御回路１５より電
力が供給される。Next, after a predetermined period of time has elapsed since the data has been stored in the primary memory 9, the primary memory 9
data is recorded in the data recording section 13. Also at this time, power is supplied from the power supply control circuit 15 only when the recording means 6 operates.
尚、電源１４としてはリチウム電池が用いられるが、こ
の発明はリチウム電池に限定されるものではない。Note that although a lithium battery is used as the power source 14, the present invention is not limited to lithium batteries.
また、磁気センサ５も実施例のものに限定されるもので
はない。Furthermore, the magnetic sensor 5 is not limited to that of the embodiment.
以上のようにこの発明によれば、磁気センサが検出した
磁界の検出信号を計測制御回路でサンプリングし、且つ
補償後の各サンプル値をその前のザンプＩＬ／６Ｍと比
較し、その変化量を一次メモリに記憶させ、この−次メ
モリのデータを間欠的に記録手段に記録させるようにし
たために、小さな記録容量でもって大量の測定値を記録
することができる。つまシ、変化量のみを記録するよう
にしているので、大量のデータを記録することができ。As described above, according to the present invention, the detection signal of the magnetic field detected by the magnetic sensor is sampled by the measurement control circuit, and each sample value after compensation is compared with the previous Zamp IL/6M, and the amount of change is calculated. Since the data is stored in the primary memory and the data in the secondary memory is intermittently recorded in the recording means, a large amount of measured values can be recorded with a small recording capacity. Since only the amount of change is recorded, a large amount of data can be recorded.
装置全体を小型化することができると共に、長時間の押
１定を行うことができる。特に、地磁気変動のように変
動周期の比較的長い信号に対して、その効果は大なるも
のがある。The entire device can be downsized, and it is possible to hold the press for a long time. This is particularly effective for signals with relatively long fluctuation periods, such as geomagnetic fluctuations.
また、電力供給も間欠的に行うようにしただめに、消費
電力も少なくすることができ、電源を小型化できるので
、記録容量の小型化とＡ１俟って装置全体をさらに小型
化することができると共に。In addition, since power is supplied intermittently, power consumption can be reduced, and the power supply can be made smaller, making it possible to reduce the storage capacity and the overall size of the device by increasing A1. As well as being able to.
取扱いをも極めて容易にすることができる。Handling can also be made extremely easy.
図面はこの発明の一実施例を示し、第１図は地力計のデ
ータ記録装置のブロック図、第２図は地磁気変動に基づ
いて記録データを説明する図である。
１：データ記録装置、 ２：磁気検知手段。
５：記録手段、 ４：電力供給手段、 ５；磁気センサ
、 ５ａ：検出コイル、 ５ｂ：補償コイル、
５Ｃ：励振コイル、 ６：信号変換回路、 ７：Ａ
／Ｄ変換回路、 ８：計測制御回路、 ９ニ一次メモリ
、 １０：Ｄ／Ａ変換回路、 １１：定磁界補償
回路、 １２：データ記録制御回路、 １３：データ
記録部。
１４：電源、 １５：電源制御回路。
（９） Ａへ
１１６：励振回路、 Ｍ：全磁界値、 Ｂ：定磁界限、
Ｄ＝変動磁界値、 Ｓ：変化量。
特許出願人 株式会社島津製作所代理人 弁
理士 中 村 茂 信
（１０）The drawings show an embodiment of the present invention, and FIG. 1 is a block diagram of a data recording device for a geodynamic force meter, and FIG. 2 is a diagram for explaining recorded data based on geomagnetic fluctuations. 1: Data recording device, 2: Magnetic detection means. 5: Recording means, 4: Power supply means, 5: Magnetic sensor, 5a: Detection coil, 5b: Compensation coil,
5C: Excitation coil, 6: Signal conversion circuit, 7: A
/D conversion circuit, 8: Measurement control circuit, 9th primary memory, 10: D/A conversion circuit, 11: Constant magnetic field compensation circuit, 12: Data recording control circuit, 13: Data recording section. 14: Power supply, 15: Power supply control circuit. (9) 116 to A: Excitation circuit, M: Total magnetic field value, B: Constant magnetic field limit,
D=fluctuation magnetic field value, S: amount of change. Patent applicant Shimadzu Corporation Representative Patent attorney Shigeru Nakamura (10)
Claims (1)
検出信号をサンプリングし且つ定磁界値の補償信号を出
力すると共に、補償後の各サンプル値をそのサンプリン
グした前回のサンプル値と比較して変化量を信号として
出力する計測制御回路と、この計測制御回路の変化量信
号を一次記憶する一次メモリと、この−次メモリが記憶
したデータを所定時間毎に間欠的に記録する記録手段と
、＠記計測制御回路の補償信号によって前記磁気センサ
の検出信号を補償させる定磁界補償回路と、電源からの
電力を前記計測制御回路の制御信号によって間欠的に供
給する電源制御回路とを備えていることを特徴とする磁
力計のデータ記録装置。(1) A magnetic sensor that detects a magnetic field, samples the detection signal of this magnetic sensor, outputs a compensation signal of a constant magnetic field value, and compares each sample value after compensation with the previous sample value sampled. A measurement control circuit that outputs the amount of change as a signal, a primary memory that temporarily stores the amount of change signal of the measurement control circuit, and a recording means that intermittently records the data stored in the secondary memory at predetermined intervals. A constant magnetic field compensation circuit that compensates the detection signal of the magnetic sensor with a compensation signal of the measurement control circuit; and a power supply control circuit that intermittently supplies power from the power supply according to the control signal of the measurement control circuit. A magnetometer data recording device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57126588A JPS5915880A (en) | 1982-07-19 | 1982-07-19 | Apparatus or recording data of magnetometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57126588A JPS5915880A (en) | 1982-07-19 | 1982-07-19 | Apparatus or recording data of magnetometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5915880A true JPS5915880A (en) | 1984-01-26 |
| JPH0224348B2 JPH0224348B2 (en) | 1990-05-29 |
Family
ID=14938890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57126588A Granted JPS5915880A (en) | 1982-07-19 | 1982-07-19 | Apparatus or recording data of magnetometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915880A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293395A (en) * | 1988-09-29 | 1990-04-04 | Tokin Corp | Magnetic measuring apparatus |
| CN102364354A (en) * | 2010-06-16 | 2012-02-29 | 雅马哈株式会社 | Magnetic sensor device and electronic compass apparatus |
| CN105866859A (en) * | 2016-03-29 | 2016-08-17 | 中国船舶重工集团公司第七研究所 | Self-adaptive compensation method for using magnetic fuze to detect inner-demagnetized vessel object |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144281U (en) * | 1982-03-20 | 1983-09-28 | 株式会社島津製作所 | geomagnetic measuring instrument |
-
1982
- 1982-07-19 JP JP57126588A patent/JPS5915880A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144281U (en) * | 1982-03-20 | 1983-09-28 | 株式会社島津製作所 | geomagnetic measuring instrument |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293395A (en) * | 1988-09-29 | 1990-04-04 | Tokin Corp | Magnetic measuring apparatus |
| CN102364354A (en) * | 2010-06-16 | 2012-02-29 | 雅马哈株式会社 | Magnetic sensor device and electronic compass apparatus |
| CN105866859A (en) * | 2016-03-29 | 2016-08-17 | 中国船舶重工集团公司第七研究所 | Self-adaptive compensation method for using magnetic fuze to detect inner-demagnetized vessel object |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0224348B2 (en) | 1990-05-29 |
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