JPS63292707A - Highly stable oscillator - Google Patents
Highly stable oscillatorInfo
- Publication number
- JPS63292707A JPS63292707A JP12922387A JP12922387A JPS63292707A JP S63292707 A JPS63292707 A JP S63292707A JP 12922387 A JP12922387 A JP 12922387A JP 12922387 A JP12922387 A JP 12922387A JP S63292707 A JPS63292707 A JP S63292707A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- crystal oscillation
- oscillation circuit
- heater
- circuit
- 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
Links
- 230000010355 oscillation Effects 0.000 claims abstract description 31
- 239000013078 crystal Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000011810 insulating material Substances 0.000 claims description 8
- 229920002799 BoPET Polymers 0.000 abstract description 2
- 239000005041 Mylar™ Substances 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 239000011491 glass wool Substances 0.000 abstract description 2
- 239000012212 insulator Substances 0.000 abstract 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分！）
本発明は、周囲環境温度の変化に対する発振周波数の変
化を少なくすることができる高安定発振器に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application!) The present invention relates to a highly stable oscillator that can reduce changes in oscillation frequency due to changes in ambient temperature.
（従来の技術）
従来の発振器においては、水晶発振回路１の周囲を発熱
体２で包囲しておくことにより、発振器全体の周囲環境
温度が変化した場合に、前記発熱体２の発熱量を制御し
て水晶発振回路１の温度を一定に保ち、発振周波数の変
化を小キ＜シている。(Prior Art) In a conventional oscillator, by surrounding a crystal oscillation circuit 1 with a heating element 2, the amount of heat generated by the heating element 2 can be controlled when the ambient temperature of the entire oscillator changes. The temperature of the crystal oscillation circuit 1 is kept constant, and changes in the oscillation frequency are kept small.
第２図は、従来の高安定発振器の構造を示す概念図であ
る。ｒＸｉ中、１は水晶発生回路、２は発熱体、３はサ
ーミスタ等の感温抵抗体、４は発振出力端子、５は発熱
体の発熱量を制御する温度制御回路である。FIG. 2 is a conceptual diagram showing the structure of a conventional highly stable oscillator. In the rXi, 1 is a crystal generating circuit, 2 is a heating element, 3 is a temperature sensitive resistor such as a thermistor, 4 is an oscillation output terminal, and 5 is a temperature control circuit that controls the amount of heat generated by the heating element.
この様な構成の従来の高安定発振器の動作は、次の通り
である。水晶発振回路１の温度を発熱体２に流す電流に
よる発熱により例えば５５℃に保つ１周囲環境温度が変
化した場合（例えば３０℃から１０°Ｃへ下った場合）
には感温抵抗体３の抵抗値変化を温度制御回路５で検知
し、発熱体２の電流を増加させて水晶発振回路１の温度
を一定に保つ、これに対し、周囲温度が高くなった場合
（例えば３０℃から４０℃）には電流を減らす。The operation of a conventional highly stable oscillator having such a configuration is as follows. The temperature of the crystal oscillator circuit 1 is maintained at, for example, 55°C due to the heat generated by the current flowing through the heating element 2.1 When the ambient environment temperature changes (for example, when it drops from 30°C to 10°C)
When the temperature control circuit 5 detects a change in the resistance value of the temperature-sensitive resistor 3, the current of the heating element 2 is increased to keep the temperature of the crystal oscillation circuit 1 constant.In contrast, when the ambient temperature becomes high, (for example from 30°C to 40°C), reduce the current.
（発明が解決しようとする問題点）
前述した従来の高安定発振器は、地上で消費電力の制約
が少ない装置へ使用する場合や、周囲温度の変化範囲が
比較的狭い場合には有効である。(Problems to be Solved by the Invention) The conventional highly stable oscillator described above is effective when used in equipment on the ground with few restrictions on power consumption, or when the range of change in ambient temperature is relatively narrow.
ところが、宇宙空間においては周囲温度が一り０℃〜＋
５０°Ｃ程度の範囲で変化する点と消費電力の制約が厳
しい点とから従来の高安定発振器を人工衛星等の宇宙用
機器へ応用することは困難であった。However, in outer space, the ambient temperature ranges from 0℃ to +
It has been difficult to apply conventional highly stable oscillators to space equipment such as artificial satellites because the temperature varies within a range of about 50°C and there are severe restrictions on power consumption.
本発明の高安定水晶発振器は、発熱体２の熱の発散を最
少限に留めると共に、外部環境温度が急激に変化した場
合にも水晶発振回路１の温度変化を最少限に留めること
を目的としている。The purpose of the highly stable crystal oscillator of the present invention is to minimize the dissipation of heat from the heating element 2, and also to minimize the temperature change in the crystal oscillation circuit 1 even when the external environmental temperature changes suddenly. There is.
（問題点を解決するための手段）
前述の問題点を解決するために本発明が提供する手段は
、水晶発振回路とこの水晶発振回路の温度を周囲温度の
変化にかかわらず一定に調節する発熱体とを備えている
高安定発振器において、前記水晶発振回路及び前記発熱
体が断熱材で覆われていることを特徴とする。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a crystal oscillation circuit and a heat generating system that adjusts the temperature of the crystal oscillation circuit to be constant regardless of changes in ambient temperature. The highly stable oscillator is characterized in that the crystal oscillation circuit and the heating element are covered with a heat insulating material.
（実施例、） 次に、本発明について図面を参照して説明する。(Example,) Next, the present invention will be explained with reference to the drawings.
第１図は、本発明の一実施例の高安定発振器の構造を示
す概念図である。FIG. 1 is a conceptual diagram showing the structure of a highly stable oscillator according to an embodiment of the present invention.
図中、１は水晶発振回路、２は発熱体、３は感温抵抗体
、４は発振出力端子、５は温度制御回路、６は断熱材で
ある。In the figure, 1 is a crystal oscillation circuit, 2 is a heating element, 3 is a temperature-sensitive resistor, 4 is an oscillation output terminal, 5 is a temperature control circuit, and 6 is a heat insulating material.
本実施例の高安定発振器は、第１図に示すように、水晶
発振回路１と、この水晶発振回路１に巻き付けである発
熱体２と、水晶発振回路１の温度に応じた抵抗値を示す
感温抵抗体３と、感温抵抗体３の抵抗値変化を検知して
発熱体２に供給する電流を増減する温度制御回路５と、
発振出力端子４と、断熱材６とを備えている。As shown in FIG. 1, the highly stable oscillator of this embodiment includes a crystal oscillation circuit 1, a heating element 2 wound around the crystal oscillation circuit 1, and a resistance value that varies depending on the temperature of the crystal oscillation circuit 1. a temperature-sensitive resistor 3; a temperature control circuit 5 that detects a change in the resistance value of the temperature-sensitive resistor 3 and increases or decreases the current supplied to the heating element 2;
It includes an oscillation output terminal 4 and a heat insulating material 6.
本実施例の場合、水晶発振回路１を収めるケースは５０
Ｘ ２５Ｘ ２０ （ｍｌ ）程度のものである。発熱
体２としては、例えばニッケルクローム線がある。In the case of this embodiment, the case in which the crystal oscillation circuit 1 is housed is 50
It is approximately 25×20 (ml). As the heating element 2, for example, there is a nickel chrome wire.
感温抵抗体３としては、例えばサーミスタがある。また
、温度制御回路５は、演算増幅回路及び発熱体駆動回路
を備えている。As the temperature-sensitive resistor 3, for example, there is a thermistor. Further, the temperature control circuit 5 includes an operational amplifier circuit and a heating element drive circuit.
断熱材６は、アルミ蒸着マイラーシートとガラスウール
との積層材である。The heat insulating material 6 is a laminated material of an aluminum vapor-deposited mylar sheet and glass wool.
本実施例の高安定発振器を宇宙空間において使用した場
合、周囲温度が下がると、温度制御回路５は感温抵抗体
３の抵抗値変化を検知し、発熱体２に供給する電流を増
加きせる。その結果、発熱体２の発熱量が増加し、水晶
発振回路１の温度が一定に保たれる０発熱体２が巻き付
けである水晶発振回路１のケースが断熱材６で覆われて
いるので、熱が逃げにくく、従来に較べ少ない電流で水
晶発振回路１を温めることができる。これに対し、周囲
温度が上がると、温度制御回路５は発熱体２に供給する
電流を減少させ、発熱体２の発熱量を少なくする。When the highly stable oscillator of this embodiment is used in space, when the ambient temperature drops, the temperature control circuit 5 detects a change in the resistance value of the temperature sensitive resistor 3 and increases the current supplied to the heating element 2. As a result, the heat generation amount of the heating element 2 increases, and the temperature of the crystal oscillation circuit 1 is kept constant.0 Since the case of the crystal oscillation circuit 1 where the heating element 2 is wrapped is covered with the heat insulating material 6, It is difficult for heat to escape, and the crystal oscillation circuit 1 can be heated with less current than in the past. On the other hand, when the ambient temperature rises, the temperature control circuit 5 reduces the current supplied to the heating element 2, thereby reducing the amount of heat generated by the heating element 2.
本実施例の高安定発振器によれば、断熱材の６の断熱効
果により、発熱体２の発熱量は従来例に比べて１７３〜
１／１０程度に低減できると同時に、周囲環境温度の変
化に対して断熱材６の内部の温度変化を１７２〜１７３
程度に抑えることができる。According to the highly stable oscillator of this embodiment, due to the heat insulation effect of the heat insulating material, the calorific value of the heating element 2 is 173 to 173 times higher than that of the conventional example.
It can be reduced to about 1/10, and at the same time, the temperature change inside the insulation material 6 can be reduced by 172 to 173% due to changes in the ambient environment temperature.
It can be kept to a certain extent.
本発明の応用例として、全方位測位システム（Ｇｌｏｂ
ａｌ Ｐｏｓｉｔｉｏｎｎｉｎｇ Ｓｙｓｔｅｍ ：
ＧＰＳ ）用受信機ＣＧＰＳ−ＲＸ ）の基準信号源、
各種中継器システム等が考えられる。As an application example of the present invention, an omnidirectional positioning system (Glob
Al Positionning System:
Reference signal source for receiver CGPS-RX) for GPS),
Various repeater systems etc. are possible.
（発明の効果）
本発明の高安定発振器によれば、従来の高安定発振器に
較べて少ない消費電力で広範囲の温度変化に対応するこ
とができるので、例えば人工衛星等の宇宙用機器に応用
し得る。(Effects of the Invention) The highly stable oscillator of the present invention can cope with a wide range of temperature changes with less power consumption than conventional highly stable oscillators, so it can be applied to space equipment such as artificial satellites. obtain.
第１図は、本発明の一実施例の高安定発振器の構造を示
す概念図、第２図は従来の高安定発振器の構造を示す概
念図である。
１・・・水晶発振回路、２・・・発熱体、３・・・感温
抵抗体、４・・・発振出力端子、５・・・温度制御回路
、６・・・断熱材。FIG. 1 is a conceptual diagram showing the structure of a highly stable oscillator according to an embodiment of the present invention, and FIG. 2 is a conceptual diagram showing the structure of a conventional highly stable oscillator. DESCRIPTION OF SYMBOLS 1... Crystal oscillation circuit, 2... Heating element, 3... Temperature sensitive resistor, 4... Oscillation output terminal, 5... Temperature control circuit, 6... Heat insulating material.
Claims (1)
化にかかわらず一定に調節する発熱体とを備えている高
安定発振器において、前記水晶発振回路及び前記発熱体
が断熱材で覆われていることを特徴とする高安定発振器
。In a highly stable oscillator comprising a crystal oscillation circuit and a heating element that adjusts the temperature of the crystal oscillation circuit to be constant regardless of changes in ambient temperature, the crystal oscillation circuit and the heating element are covered with a heat insulating material. A highly stable oscillator characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12922387A JPS63292707A (en) | 1987-05-25 | 1987-05-25 | Highly stable oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12922387A JPS63292707A (en) | 1987-05-25 | 1987-05-25 | Highly stable oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63292707A true JPS63292707A (en) | 1988-11-30 |
Family
ID=15004191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12922387A Pending JPS63292707A (en) | 1987-05-25 | 1987-05-25 | Highly stable oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63292707A (en) |
-
1987
- 1987-05-25 JP JP12922387A patent/JPS63292707A/en active Pending
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