JP2882398B2 - Earth sensor detector for satellite installation - Google Patents
Earth sensor detector for satellite installationInfo
- Publication number
- JP2882398B2 JP2882398B2 JP9098764A JP9876497A JP2882398B2 JP 2882398 B2 JP2882398 B2 JP 2882398B2 JP 9098764 A JP9098764 A JP 9098764A JP 9876497 A JP9876497 A JP 9876497A JP 2882398 B2 JP2882398 B2 JP 2882398B2
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- earth sensor
- infrared light
- sensor detector
- amplifier
- 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 - Lifetime
Links
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- Navigation (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、人工衛星に搭載さ
れ、姿勢制御のためのセンサとして利用される検出器に
関し、特に、姿勢検出の際に要求される、安定した高精
度の人工衛星搭載用地球センサ検出器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detector mounted on an artificial satellite and used as a sensor for attitude control, and more particularly, to a stable and high-accuracy artificial satellite required for attitude detection. The present invention relates to an earth sensor detector for use.
【０００２】[0002]
【従来の技術】図１，図２は、従来の人工衛星搭載用地
球センサ検出器の一例の構成を示す図である。2. Description of the Related Art FIGS. 1 and 2 are views showing the configuration of an example of a conventional earth sensor detector mounted on an artificial satellite.
【０００３】図１は、従来の人工衛星搭載用地球センサ
検出器の構成を示す回路図である。この検出器は、光学
系３と、地球センサエレクトロニクス部５とからなる。
光学系３は、赤外線を収束するレンズ４と、レンズ４を
通過した赤外線を受光する赤外線受光素子１をもつ赤外
線受光部１１とを有する。地球センサエレクトロニクス
部５は、赤外線受光部１１により受光された赤外線を増
幅させる増幅器６と、増幅器６により増幅された信号を
処理する信号処理部７と、バイアス抵抗器１２とを有す
る。バイアス抵抗器１２と赤外線受光素子１とは、直列
に接続され、ノイズ，電圧変動，温度変動などに対して
出力信号がドリフトする。FIG. 1 is a circuit diagram showing the configuration of a conventional earth sensor detector mounted on a satellite. This detector comprises an optical system 3 and an earth sensor electronics unit 5.
The optical system 3 includes a lens 4 that converges infrared light and an infrared light receiving unit 11 that has an infrared light receiving element 1 that receives infrared light that has passed through the lens 4. The earth sensor electronics unit 5 includes an amplifier 6 for amplifying the infrared light received by the infrared light receiving unit 11, a signal processing unit 7 for processing a signal amplified by the amplifier 6, and a bias resistor 12. The bias resistor 12 and the infrared light receiving element 1 are connected in series, and the output signal drifts due to noise, voltage fluctuation, temperature fluctuation, and the like.
【０００４】図２は、図１の赤外線受光部１１の構成を
示すブロック図である。赤外線受光部１１は、赤外線受
光素子１と、赤外線受光素子を支持する受光部支持台２
とを備えている。従来の検出器の赤外線受光素子１は１
個のみであった。FIG. 2 is a block diagram showing a configuration of the infrared receiving section 11 of FIG. The infrared light receiving section 11 includes an infrared light receiving element 1 and a light receiving section support base 2 that supports the infrared light receiving element.
And The infrared detector 1 of the conventional detector is 1
There were only pieces.
【０００５】[0005]
【発明が解決しようとする課題】上述した従来の地球セ
ンサ検出器では、増幅器６の出力電圧が、バイアス電圧
変動，温度変動によってドリフトする。In the above-described conventional earth sensor detector, the output voltage of the amplifier 6 drifts due to a bias voltage fluctuation and a temperature fluctuation.
【０００６】すなわち、バイアス電圧をＢ，バイアス抵
抗器１２の抵抗値をｒ’，赤外線受光素子１の抵抗値を
Ｒ，増幅器６の増幅度をＫとすると、増幅器６の出力電
圧Ｖｓは、That is, assuming that the bias voltage is B, the resistance value of the bias resistor 12 is r ', the resistance value of the infrared light receiving element 1 is R, and the amplification degree of the amplifier 6 is K, the output voltage Vs of the amplifier 6 becomes
【０００７】[0007]
【数１】 (Equation 1)
【０００８】となり、バイアス電圧Ｂの変動をΔｖ，抵
抗ＲのドリフトをΔＲとすると、[0008] Assuming that the variation of the bias voltage B is Δv and the drift of the resistor R is ΔR,
【０００９】[0009]
【数２】 (Equation 2)
【００１０】となり、このΔｖ，ΔＲにより、出力電圧
Ｖｓがドリフトする。The output voltage Vs drifts due to Δv and ΔR.
【００１１】従って、地球センサ検出器としての測定精
度に悪影響を及ぼすという問題を有していた。Accordingly, there is a problem that the measurement accuracy as an earth sensor detector is adversely affected.
【００１２】本発明の目的は、バイアス電圧変動，温度
変動に対して、安定したパルスを出力し、測定誤差角を
最小に抑えることのできる人工衛星搭載用地球センサ検
出器を提供することにある。An object of the present invention is to provide an earth sensor detector mounted on an artificial satellite capable of outputting a stable pulse with respect to a bias voltage fluctuation and a temperature fluctuation and minimizing a measurement error angle. .
【００１３】[0013]
【課題を解決するための手段】上記課題を解決するた
め、本発明の人工衛星搭載用地球センサ検出器は、赤外
線を収束するレンズと、レンズを通過した赤外線を受光
する受光素子をもつ赤外線受光部とを有する光学系と、
赤外線受光部により受光された赤外線を増幅させる増幅
器と、増幅器により増幅された信号を処理する信号処理
部とを有する地球センサエレクトロニクス部とを備えた
人工衛星搭載用地球センサ検出器において、赤外線受光
部が、赤外線を受光する複数の受光素子を有し、複数の
受光素子が、ブリッジ回路を構成し、複数の受光素子の
うち、１個の受光素子に赤外線を受光させ、他の受光素
子は、マスキングをかけ、増幅器の出力電圧のドリフト
をなくすことができることを特徴とする。In order to solve the above-mentioned problems, an earth sensor detector mounted on an artificial satellite according to the present invention has an infrared ray receiving lens having a lens for focusing infrared rays and a light receiving element for receiving infrared rays passing through the lens. An optical system having
In an earth sensor detector mounted on a satellite equipped with an amplifier for amplifying infrared light received by an infrared light receiving unit and an earth sensor electronics unit having a signal processing unit for processing a signal amplified by the amplifier, an infrared light receiving unit is provided. Has a plurality of light receiving elements that receive infrared light, the plurality of light receiving elements constitute a bridge circuit, and among the plurality of light receiving elements, one light receiving element receives infrared light, and the other light receiving elements are: It is characterized in that masking can be applied and drift of the output voltage of the amplifier can be eliminated.
【００１４】また、複数の受光素子の抵抗値が、同じ値
であることが好ましい。It is preferable that the plurality of light receiving elements have the same resistance value.
【００１５】さらに、増幅器が、差動増幅器であること
が好ましい。Further, it is preferable that the amplifier is a differential amplifier.
【００１６】またさらに、本発明の人工衛星用地球セン
サ検出器は、人工衛星搭載用ミラーの水平振動によるス
ルースキャン型であることが好ましい。Furthermore, the earth sensor detector for artificial satellite of the present invention is preferably of a through-scan type by horizontal vibration of a mirror mounted on an artificial satellite.
【００１７】また、複数の受光素子が、５個であること
が好ましい。Preferably, the number of the plurality of light receiving elements is five.
【００１８】[0018]
【発明の実施の形態】図３は、本発明の人工衛星搭載用
地球センサ検出器の構成を示す回路図である。この検出
器は、光学系３と、地球センサエレクトロニクス部５と
からなる。光学系３は、赤外線を収束するレンズ４と、
レンズ４を通過した赤外線を受光する赤外線受光素子１
をもつ赤外線受光部１１とを有する。地球センサエレク
トロニクス部５は、赤外線受光部１１により受光された
赤外線を増幅させる差動増幅器１０と、差動増幅器１０
により増幅された信号を処理する信号処理部７とを有す
る。光学系３の赤外線受光部１１は、複数（図では５
個）の受光素子を有し、これら複数の受光素子のうち、
１個の受光素子１に赤外線を受光させ、他の４個の受光
素子は、光が入射しないようにマスキングをかけた受光
素子９である。このマスクされた受光素子９の抵抗値
は、それぞれ同じ抵抗値となるようにする。そして、こ
れらの受光素子１，９は、ブリッジ回路を構成するよう
に接続配置する。このブリッジ回路にバイアス電圧２Ｂ
（＋Ｂ〜−Ｂ）をかけ、ブリッジ回路の端子１３ａ，１
３ｂ間の出力を差動増幅器１０で受け、従来と同じ構造
の信号処理部７で角度を検出して姿勢制御装置（図示せ
ず）へパルスを出力する。ここでは、５個の受光素子の
うち、１個の受光素子１の抵抗値をＲとし、マスクされ
た受光素子９の抵抗値をそれぞれｒとする。FIG. 3 is a circuit diagram showing the configuration of the earth sensor detector mounted on an artificial satellite according to the present invention. This detector comprises an optical system 3 and an earth sensor electronics unit 5. The optical system 3 includes a lens 4 that converges infrared rays,
Infrared light receiving element 1 for receiving infrared light passing through lens 4
And an infrared light receiving unit 11 having The earth sensor electronics unit 5 includes a differential amplifier 10 for amplifying infrared light received by the infrared light receiving unit 11, and a differential amplifier 10
And a signal processing unit 7 that processes the signal amplified by The infrared receiving section 11 of the optical system 3 has a plurality (5 in FIG.
) Light-receiving elements, and among these light-receiving elements,
One light receiving element 1 receives infrared light, and the other four light receiving elements are light receiving elements 9 which are masked so that light does not enter. The masked light receiving elements 9 have the same resistance. These light receiving elements 1 and 9 are connected and arranged so as to form a bridge circuit. This bridge circuit has a bias voltage of 2B
(+ B to -B) and apply the terminals 13a and 1
The output between 3b is received by the differential amplifier 10, the angle is detected by the signal processing unit 7 having the same structure as in the related art, and a pulse is output to an attitude control device (not shown). Here, among the five light receiving elements, the resistance value of one light receiving element 1 is R, and the resistance value of the masked light receiving element 9 is r.
【００１９】図４は、本発明の人工衛星搭載用地球セン
サ検出器の赤外線受光部の構成を示すブロック図であ
る。この赤外線受光部１１は、前述したように、５個の
受光素子を有し、５個の受光素子のうち、１個の受光素
子１に赤外線を受光させ、他の受光素子９は、光が入射
しないようにマスキングをかけている。そして、これら
の受光素子１，９が、図示のようにブリッジ回路を構成
する。このように、受光素子１のみが赤外線が受光する
ようにセットされ、他の受光素子９は、マスクされてい
るため感度はない。そして、このブリッジ回路を受光素
子支持台８により支持している。FIG. 4 is a block diagram showing the configuration of the infrared light receiving section of the earth sensor detector mounted on a satellite according to the present invention. As described above, the infrared light receiving unit 11 has five light receiving elements, and among the five light receiving elements, one light receiving element 1 receives infrared light, and the other light receiving elements 9 emit light. Masking is applied to prevent incidence. These light receiving elements 1 and 9 form a bridge circuit as shown. Thus, only the light receiving element 1 is set to receive infrared rays, and the other light receiving elements 9 are masked and have no sensitivity. The bridge circuit is supported by the light receiving element support 8.
【００２０】このように構成された赤外線検出器では、
差動増幅器１０の出力電圧Ｖ’ｓは、バイアス電圧２Ｂ
の変動を２Δｖ，受光素子１の抵抗ＲのドリフトをΔ
Ｒ，受光素子９の抵抗ｒのドリフトをΔｒ，差動増幅器
１０の増幅度をＫとすると、定常状態では、In the infrared detector configured as described above,
The output voltage V's of the differential amplifier 10 is equal to the bias voltage 2B
Is 2Δv, and the drift of the resistance R of the light receiving element 1 is ΔΔ
R, the drift of the resistance r of the light receiving element 9 is Δr, and the amplification of the differential amplifier 10 is K, in a steady state,
【００２１】[0021]
【数３】 (Equation 3)
【００２２】となる。受光素子１および９は、同じチッ
プ（支持台８）上に作製されるので、受光素子１と受光
素子９とは、同一特性とすることができる。従って、Ｒ
＝ｒとすることができ、抵抗ｒのドリフトΔｒも抵抗Ｒ
のドリフトΔＲに等しくなる。## EQU1 ## Since the light receiving elements 1 and 9 are manufactured on the same chip (support base 8), the light receiving element 1 and the light receiving element 9 can have the same characteristics. Therefore, R
= R, and the drift Δr of the resistor r is
Of the drift ΔR.
【００２３】従って、式３は、Therefore, equation 3 becomes
【００２４】[0024]
【数４】 (Equation 4)
【００２５】となり、差動増幅器１０の出力Ｖ’ｓは０
となる。このことから、定常状態では、差動増幅器１０
の出力Ｖ’ｓは、電圧変動，温度変化，ノイズなどに対
し影響されないことが分かる。The output V's of the differential amplifier 10 becomes 0
Becomes From this, in the steady state, the differential amplifier 10
It can be seen that the output V's is not affected by voltage fluctuation, temperature change, noise and the like.
【００２６】以上のような構成にすることにより、バイ
アス電圧の変動，温度変動に基づく受光素子の抵抗変化
による、差動増幅器１０の出力のドリフトが発生しな
い。また、受光素子に対する周囲ノイズの影響は、差動
増幅器１０で相殺されるので、差動増幅器１０の出力
は、ノイズの影響を受けない。With the above configuration, the output of the differential amplifier 10 does not drift due to a change in the resistance of the light receiving element due to a change in the bias voltage and a change in the temperature. Further, the influence of the ambient noise on the light receiving element is canceled by the differential amplifier 10, so that the output of the differential amplifier 10 is not affected by the noise.
【００２７】[0027]
【発明の効果】本発明の地球センサ検出器は、オフセッ
ト電圧のドリフトを受光素子のところでなくすことがで
きる。従って、差動増幅器における利得を十分大きくす
ることができるという効果を奏する。According to the earth sensor detector of the present invention, the drift of the offset voltage can be eliminated at the light receiving element. Therefore, there is an effect that the gain in the differential amplifier can be sufficiently increased.
【００２８】また、電源電圧変動，温度変動，周囲ノイ
ズ等に対して影響を受けなくなるため、安定した地球検
出パルスにより地球センサ検出器の測定精度を上げるこ
とができるという効果を奏する。Further, since there is no influence on power supply voltage fluctuation, temperature fluctuation, ambient noise, etc., there is an effect that the measurement accuracy of the earth sensor detector can be improved by a stable earth detection pulse.
【図１】従来の人工衛星搭載用地球センサ検出器の構成
を示す回路図である。FIG. 1 is a circuit diagram showing a configuration of a conventional earth sensor detector mounted on a satellite.
【図２】従来の人工衛星搭載用地球センサ検出器の赤外
線受光部の構成を示すブロック図である。FIG. 2 is a block diagram showing a configuration of a conventional infrared receiving unit of the earth sensor detector mounted on a satellite.
【図３】本発明の人工衛星搭載用地球センサ検出器の構
成を示す回路図である。FIG. 3 is a circuit diagram showing a configuration of an earth sensor detector mounted on an artificial satellite according to the present invention.
【図４】本発明の人工衛星搭載用地球センサ検出器の赤
外線受光部の構成を示すブロック図である。FIG. 4 is a block diagram showing a configuration of an infrared light receiving section of the earth sensor detector mounted on a satellite according to the present invention.
１ 受光素子 ２ 受光素子支持台 ３ 光学系 ４ レンズ ５ 地球センサエレクトロニクス部 ６ 増幅器 ７ 信号処理部 ８ 受光素子支持台 ９ マスクされた受光素子 １０ 差動増幅器 １１ 赤外線受光部 １２ バイアス抵抗 １３ａ，１３ｂ 端子 Reference Signs List 1 light receiving element 2 light receiving element support 3 optical system 4 lens 5 earth sensor electronics section 6 amplifier 7 signal processing section 8 light receiving element support 9 masked light receiving element 10 differential amplifier 11 infrared light receiving section 12 bias resistors 13a, 13b terminals
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G01C 1/00 B64G 1/36 G01C 21/24 G01J 1/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) G01C 1/00 B64G 1/36 G01C 21/24 G01J 1/02
Claims (5)
通過した前記赤外線を受光する受光素子をもつ赤外線受
光部とを有する光学系と、 前記赤外線受光部により受光された赤外線を増幅させる
増幅器と、前記増幅器により増幅された信号を処理する
信号処理部とを有する地球センサエレクトロニクス部
と、 を備えた人工衛星搭載用地球センサ検出器において、 前記赤外線受光部が、前記赤外線を受光する複数の受光
素子を有し、 前記複数の受光素子が、ブリッジ回路を構成し、 前記複数の受光素子のうち、１個の受光素子に前記赤外
線を受光させ、他の受光素子は、マスキングをかけ、 前記増幅器の出力電圧のドリフトをなくすことができる
ことを特徴とする、人工衛星搭載用地球センサ検出器。1. An optical system comprising: a lens for converging infrared light; an infrared light receiving unit having a light receiving element for receiving the infrared light passing through the lens; and an amplifier for amplifying the infrared light received by the infrared light receiving unit. An earth sensor electronics unit having a signal processing unit that processes a signal amplified by the amplifier; and an earth sensor detector mounted on a satellite, comprising: a plurality of light receiving units that receive the infrared light. An element, wherein the plurality of light receiving elements constitute a bridge circuit, one of the plurality of light receiving elements receives the infrared light, the other light receiving elements are masked, and the amplifier An earth sensor detector mounted on a satellite, characterized in that the drift of the output voltage of the satellite can be eliminated.
あることを特徴とする、請求項１に記載の人工衛星搭載
用地球センサ検出部。2. The earth sensor detecting section according to claim 1, wherein the plurality of light receiving elements have the same resistance value.
徴とする、請求項１または２に記載の人工衛星搭載用地
球センサ検出器。3. The earth sensor detector according to claim 1, wherein said amplifier is a differential amplifier.
ルースキャン型であることを特徴とする、請求項１〜３
のいずれかに記載の人工衛星搭載用地球センサ検出器。4. A through-scan type by means of horizontal vibration of a mirror mounted on an artificial satellite.
An earth sensor detector for mounting on an artificial satellite according to any one of the above.
特徴とする、請求項１〜４のいずれかに記載の人工衛星
搭載用地球センサ検出器。5. The earth sensor detector according to claim 1, wherein said plurality of light receiving elements are five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9098764A JP2882398B2 (en) | 1997-04-16 | 1997-04-16 | Earth sensor detector for satellite installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9098764A JP2882398B2 (en) | 1997-04-16 | 1997-04-16 | Earth sensor detector for satellite installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10288520A JPH10288520A (en) | 1998-10-27 |
| JP2882398B2 true JP2882398B2 (en) | 1999-04-12 |
Family
ID=14228476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9098764A Expired - Lifetime JP2882398B2 (en) | 1997-04-16 | 1997-04-16 | Earth sensor detector for satellite installation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2882398B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2603814C1 (en) * | 2015-06-03 | 2016-11-27 | Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" | Method for monitoring emergency situations on man-related spacecraft and system for its implementation |
-
1997
- 1997-04-16 JP JP9098764A patent/JP2882398B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10288520A (en) | 1998-10-27 |
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