JPS623527A - Piezoelectric oscillator with constant temperature oven - Google Patents

Piezoelectric oscillator with constant temperature oven

Info

Publication number
JPS623527A
JPS623527A JP14155585A JP14155585A JPS623527A JP S623527 A JPS623527 A JP S623527A JP 14155585 A JP14155585 A JP 14155585A JP 14155585 A JP14155585 A JP 14155585A JP S623527 A JPS623527 A JP S623527A
Authority
JP
Japan
Prior art keywords
temperature
heat insulator
insulator part
heat
constant
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
JP14155585A
Other languages
Japanese (ja)
Inventor
Yoshiaki Araki
荒木　善明
Yoshikatsu Sato
良克 佐藤
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP14155585A priority Critical patent/JPS623527A/en
Publication of JPS623527A publication Critical patent/JPS623527A/en
Pending legal-status Critical Current

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  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To keep the secular change characteristic of a piezoelectric vibrator and an oscillation circuit component by containing the 1st heat insulator part containing an oscillation circuit including the piezoelectric vibrator into the 2nd heat insulator part whose temperature is kept constant at a lower temperature less than the lowest temperature in the ambient temperature of the constant temperature oven. CONSTITUTION:The constant temperature oven has duplicated structure constituting of the 1st heat insulator part 10 and the 2nd heat insulator part 11 and the 1st heat insulator part 10 is contained in the 2nd heat insulator part 11. The 1st heat insulator part 10 is provided with a heating part 12 and a constant oven temperature control circuit 13 controlling the part 12. On the other hand, the 2nd heat insulation part 11 is provided with a cooler 14 and a constant temperature oven temperature control circuit 15 controlling the cooler 14. Since the 1st heat insulator part 10 is contained in the 2nd heat insulator part 11 whose temperature is set to a low temperature, the temperature in the inside of the 1st heat insulator part 10 is kept constant at a temperature higher than the temperature in the 2nd heat insulator part by the heater 12 and at a low temperature where the frequency change with respect to the temperature change is minimized in the 3rd order temperature characteristic of the piezoelectric vibrator.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は圧電発振器に関し、特に圧電振動子と発振回路
とを内部に収容した恒温槽を有する恒温横付圧電発振器
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a piezoelectric oscillator, and more particularly to a constant-temperature horizontal piezoelectric oscillator having a constant-temperature bath in which a piezoelectric vibrator and an oscillation circuit are housed.

〔従来の技術〕[Conventional technology]

従来、この種の恒温槽付圧電発振器は、圧電発振器の周
囲温度変化に対する周波数変化の性能を高める為、圧電
振動子や発振回路を恒温槽の保温部内に収容し、保温部
内の温度を、周囲温度の変化範囲における最も高い温度
以上で、かつ圧電振動子の温度変化に対する周波数変化
が最も小さくなる温度に保つ方法が一般に行なわれてい
る。第３図に従来の、恒温槽付圧電発振器における恒温
槽の保温部内温度設定例を示す。横軸は温度を、縦軸は
周波数変化率を示す。曲線１は、圧電振動子の温度特性
曲線であり、恒温槽周囲温度の変化範囲を２で、恒温槽
の保温部内設定温度点を３で示す。Conventionally, this type of piezoelectric oscillator with a thermostatic oven has housed the piezoelectric vibrator and oscillation circuit in the heat-insulating part of the thermostatic oven to improve the frequency change performance of the piezoelectric oscillator in response to changes in ambient temperature. Generally, a method is used to maintain the piezoelectric vibrator at a temperature that is higher than the highest temperature in the temperature change range and at which the frequency change with respect to temperature change of the piezoelectric vibrator is the smallest. FIG. 3 shows an example of setting the temperature inside the heat-retaining section of a thermostatic oven in a conventional piezoelectric oscillator with a thermostatic oven. The horizontal axis shows temperature, and the vertical axis shows frequency change rate. Curve 1 is a temperature characteristic curve of the piezoelectric vibrator, and 2 indicates the range of change in the ambient temperature of the thermostatic oven, and 3 indicates the set temperature point in the heat-retaining part of the thermostatic oven.

このように、保温部内の温度は、周囲温度の変化範囲に
おける最も高い温度以上で、かつ圧電振動子の温度変化
に対する周波数変化が最も小さくなる温度に設定されて
いる。In this way, the temperature within the heat retaining section is set to be higher than the highest temperature in the range of changes in ambient temperature and at which the frequency change in the piezoelectric vibrator with respect to temperature change is the smallest.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来の恒温槽付圧電発振器は、恒温槽の保温部
内温度を高温に保つ為、その内部に収容している圧電振
動子や発振回路部品の経時変化特性が悪化するという欠
点がある。The conventional piezoelectric oscillator with a thermostatic oven described above has the disadvantage that the temperature inside the thermostatic oven is maintained at a high temperature, so that the aging characteristics of the piezoelectric vibrator and oscillation circuit components housed therein deteriorate.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の目的は、上述の欠点を改善した恒温槽付圧電発
振器を提供することにある。An object of the present invention is to provide a piezoelectric oscillator with a constant temperature oven that improves the above-mentioned drawbacks.

本発明は、圧電振動子を含む発振回路と、この発振・回
路を保温部内に収容する恒温槽とを備えた恒温槽付圧電
発振器において、加熱により第１の所定の温度に温度制
御する第１の保温部と、冷却により第２の所定の温度に
温度制御する第２の保温部とを有し、前記発振回路を前
記第１の保温部内に収容し、前記第１の保温部を前記第
２の保温部内に収容する構成としたことを特徴としてい
る。The present invention provides a piezoelectric oscillator with a constant temperature chamber that includes an oscillation circuit including a piezoelectric vibrator and a constant temperature chamber that accommodates this oscillation/circuit in a heat insulating section. and a second heat-retaining part that controls the temperature to a second predetermined temperature by cooling, the oscillation circuit is accommodated in the first heat-retaining part, and the first heat-retaining part is housed in the first heat-retaining part. It is characterized by being configured to be housed in the heat retaining section of No. 2.

〔実施例〕〔Example〕

次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.

第１図は本発明の一実施例の構成図である。FIG. 1 is a block diagram of an embodiment of the present invention.

恒温槽は第１の保温部１０と第２の保温部１１とから成
る二重構造となっており、第１の保温部１０は第２の保
温部１１内に収容されている。第１の保温部１０には、
加熱器１２と、これを制御する恒温槽温度制御回路１３
とが設けられている。一方、第２の保温部１１には、冷
却器１４と、これを制御する恒温槽温度制御回路１５と
が設けられている。第１の保温部１０内には、圧電振動
子を含む発振回路１６が収容されており、この発振回路
は恒温槽の外部の増幅器１７に接続されている。The constant temperature bath has a double structure consisting of a first heat retaining part 10 and a second heat retaining part 11, and the first heat retaining part 10 is housed in the second heat retaining part 11. The first heat retention section 10 includes
Heater 12 and thermostatic chamber temperature control circuit 13 that controls it
and is provided. On the other hand, the second heat retaining section 11 is provided with a cooler 14 and a thermostat temperature control circuit 15 that controls the cooler. An oscillation circuit 16 including a piezoelectric vibrator is housed in the first heat insulation part 10, and this oscillation circuit is connected to an amplifier 17 outside the thermostatic oven.

第２図は、以上のような構造の恒温槽付圧電発振器にお
ける恒温槽保温部内温度設定例を示す。FIG. 2 shows an example of setting the temperature inside the thermostatic chamber heat-retaining section in the thermostatic oven-equipped piezoelectric oscillator having the above-described structure.

なお、第３図と同様、１は圧電振動子の温度特性曲線、
２は恒温槽周囲温度の変化範囲をそれぞれ示している。In addition, as in FIG. 3, 1 is the temperature characteristic curve of the piezoelectric vibrator,
2 shows the range of change in the ambient temperature of the constant temperature chamber.

第２の保温部１１の内部は、冷却器１４により、恒温槽
周囲温度の変化範囲における最も低い温度よりさらに低
い温度で一定に保たれるようにする。The inside of the second heat retaining section 11 is kept at a constant temperature lower than the lowest temperature in the range of change in the ambient temperature of the thermostatic chamber by the cooler 14.

第２図において、第２の保温部内の設定温度点を４で示
す。このように低温に温度設定された第２の保温部１１
内に第１の保温部１０が収容されているために、第１の
保温部１０の内部は、加熱器１２により第２の保温部内
温度よりも高い温度で、かつ圧電振動子が有する３次の
温度特性における温度に対する周波数変化が最も小さく
なる低温側の温度で一定に保つようにすることができる
。第２図において、第１の保温部内の設定温度点を３で
示す。In FIG. 2, the set temperature point within the second heat retention section is indicated by 4. The second heat retaining part 11 whose temperature is set to a low temperature in this way
Since the first heat retaining part 10 is housed inside the first heat retaining part 10, the temperature inside the first heat retaining part 10 is higher than the internal temperature of the second heat retaining part by the heater 12, and the tertiary temperature of the piezoelectric vibrator is maintained. It is possible to maintain the temperature constant at the low temperature side where the frequency change with respect to temperature in the temperature characteristics of is the smallest. In FIG. 2, the set temperature point within the first heat retention section is indicated by 3.

このように、第１の保温部１０内の温度を低温に設定で
きる為、その内部に収容している圧電振動子や発振回路
部品の経時変化特性の悪化を防止することが可能となる
。In this way, since the temperature inside the first heat retaining section 10 can be set to a low temperature, it is possible to prevent deterioration of the aging characteristics of the piezoelectric vibrator and oscillation circuit components housed therein.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、圧電振動子を含む発振回
路を収容する第１の保温部を、恒温槽周囲温度の変化範
囲における最も低い温度よりさらに低い温度で一定に保
たれた第２の保温部内に収容することにより、第１の保
温部内温度を圧電振動子が有する３次の温度特性におけ
る温度係数が最も小さくなる温度点のうちの低温側の温
度に設定することができる為、第１の保温部内に収容し
ている圧電振動子や発振回路部品の経時変化特性を良好
に保つ効果がある。As explained above, the present invention provides a first heat-retaining part that houses an oscillation circuit including a piezoelectric vibrator, and a second heat-retaining part that is kept constant at a temperature lower than the lowest temperature in the range of change in ambient temperature of the thermostatic chamber. By housing the piezoelectric vibrator in the heat retaining section, the temperature inside the first heat retaining section can be set to the temperature on the low temperature side of the temperature point where the temperature coefficient in the third-order temperature characteristic of the piezoelectric vibrator is the smallest. This has the effect of maintaining good aging characteristics of the piezoelectric vibrator and oscillation circuit components housed in the heat insulating section 1.

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

第１図は本発明の一実施例の構成図、 第２図は第１図における恒温槽保温部内温度設定例を示
す図、 第３図は従来装置の恒温槽保温部内温度設定例を示す図
である。 １０・・・第１の保温部 １１・・・第２の保温部 １２・・・加熱器 １３．１５・・・恒温槽温度制御回路 １４・・・冷却器 １６・・・発振回路 １７・・・増幅器 代理人　弁理士　　岩　佐　義　幸 １４　；’？卸′６　　　　　　　１１第２のイ呆５品
ｉｐ第１図 第２図 を 第３図FIG. 1 is a configuration diagram of an embodiment of the present invention. FIG. 2 is a diagram showing an example of setting the temperature inside the constant temperature chamber heat retaining section in FIG. 1. FIG. 3 is a diagram showing an example of setting the temperature inside the constant temperature chamber heat retaining section of a conventional device It is. 10...First heat retention part 11...Second heat retention part 12...Heater 13.15...Thermostatic chamber temperature control circuit 14...Cooler 16...Oscillation circuit 17...・Amplifier representative Patent attorney Yoshiyuki Iwasa 14 ;'? Wholesale '6 11 2nd 5 items IP Figure 1 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] （１）圧電振動子を含む発振回路と、この発振回路を保
温部内に収容する恒温槽とを備えた恒温槽付圧電発振器
において、加熱により第１の所定の温度に温度制御する
第１の保温部と、冷却により第２の所定の温度に温度制
御する第２の保温部とを有し、前記発振回路を前記第１
の保温部内に収容し、前記第１の保温部を前記第２の保
温部内に収容する構成としたことを特徴とする恒温槽付
圧電発振器。(1) In a piezoelectric oscillator equipped with a constant temperature chamber, which includes an oscillation circuit including a piezoelectric vibrator and a constant temperature chamber in which the oscillation circuit is housed in a heat insulation section, a first heat insulation device controls the temperature to a first predetermined temperature by heating. and a second heat-retaining part that controls the temperature to a second predetermined temperature by cooling, and the oscillation circuit is connected to the first
A piezoelectric oscillator with a thermostatic oven, characterized in that the piezoelectric oscillator is housed in a heat retaining part, and the first heat retaining part is housed in the second heat retaining part.
JP14155585A 1985-06-29 1985-06-29 Piezoelectric oscillator with constant temperature oven Pending JPS623527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14155585A JPS623527A (en) 1985-06-29 1985-06-29 Piezoelectric oscillator with constant temperature oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14155585A JPS623527A (en) 1985-06-29 1985-06-29 Piezoelectric oscillator with constant temperature oven

Publications (1)

Publication Number Publication Date
JPS623527A true JPS623527A (en) 1987-01-09

Family

ID=15294690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14155585A Pending JPS623527A (en) 1985-06-29 1985-06-29 Piezoelectric oscillator with constant temperature oven

Country Status (1)

Country Link
JP (1) JPS623527A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04504035A (en) * 1988-05-28 1992-07-16 モトローラ・インコーポレーテッド Automatic calibration of oscillators in heterodyne radio receivers
WO2002033826A3 (en) * 2000-10-17 2003-01-09 Cts Corp Dual oven oscillator using a thermoelectric module
WO2003088474A1 (en) * 2002-04-17 2003-10-23 Toyo Communication Equipment Co., Ltd. Highly stable piezo-oscillator
US7427902B2 (en) 2005-04-11 2008-09-23 Epson Toyocom Corporation High-stability piezoelectric oscillator
CN102025321A (en) * 2010-12-22 2011-04-20 广东大普通信技术有限公司 Constant-temperature crystal oscillator
JP2011217224A (en) * 2010-04-01 2011-10-27 Seiko Epson Corp Constant-temperature piezoelectric oscillator
JP2012209621A (en) * 2011-03-29 2012-10-25 Nippon Dempa Kogyo Co Ltd Oscillator
US10476508B2 (en) 2016-06-27 2019-11-12 Seiko Epson Corporation Oscillator, electronic apparatus, and vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04504035A (en) * 1988-05-28 1992-07-16 モトローラ・インコーポレーテッド Automatic calibration of oscillators in heterodyne radio receivers
WO2002033826A3 (en) * 2000-10-17 2003-01-09 Cts Corp Dual oven oscillator using a thermoelectric module
WO2003088474A1 (en) * 2002-04-17 2003-10-23 Toyo Communication Equipment Co., Ltd. Highly stable piezo-oscillator
US7427902B2 (en) 2005-04-11 2008-09-23 Epson Toyocom Corporation High-stability piezoelectric oscillator
JP2011217224A (en) * 2010-04-01 2011-10-27 Seiko Epson Corp Constant-temperature piezoelectric oscillator
CN102025321A (en) * 2010-12-22 2011-04-20 广东大普通信技术有限公司 Constant-temperature crystal oscillator
JP2012209621A (en) * 2011-03-29 2012-10-25 Nippon Dempa Kogyo Co Ltd Oscillator
US10476508B2 (en) 2016-06-27 2019-11-12 Seiko Epson Corporation Oscillator, electronic apparatus, and vehicle

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