CN203457119U - Thermostatic control-based highly anti-vibration crystal oscillator - Google Patents
Thermostatic control-based highly anti-vibration crystal oscillator Download PDFInfo
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- CN203457119U CN203457119U CN201320450473.2U CN201320450473U CN203457119U CN 203457119 U CN203457119 U CN 203457119U CN 201320450473 U CN201320450473 U CN 201320450473U CN 203457119 U CN203457119 U CN 203457119U
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- crystal oscillator
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Abstract
The utility model discloses a thermostatic control-based highly anti-vibration resisting crystal oscillator and belongs to the electronic field. The crystal oscillator comprises a metal shielding housing, a vibration isolator fixed on the metal shielding housing, and a vibration system arranged on the vibration isolator. The vibration system is electrically connected with metal shielding housing. In this way, a defect that a present crystal oscillator fails to meet a requirement for anti-vibration with smaller size is overcome. The crystal oscillator provided by the utility model is small in size, simple in structure, strong in anti-vibration ability and suitable for promotion and use.
Description
Technical field
The utility model relates to a kind of crystal oscillator, specifically, relates to based on the resistance to crystal oscillator that shakes of thermostatically controlled height.
Background technology
Crystal resonator refers to the quartz-crystal resonator made from quartz material, because crystal resonator has piezoelectric effect and inverse piezoelectric effect, therefore between two electrodes of crystal resonator, apply certain voltage, can cause the vibration of crystal resonator, and the physical characteristic determining due to the material of crystal resonator itself, make crystal resonator there is the well behaved feature of frequency stabilization, be widely used in various electronic products.
And made crystal oscillator according to the piezoelectric effect of crystal resonator, crystal oscillator is on the basis of crystal resonator, to add the crystal element that IC forms oscillating circuit, crystal oscillator is widely used in various electronic circuit, or for generation of clock signal with reference signal is provided.Crystal oscillator is very responsive to mechanical oscillation, and mechanical oscillation not only make crystal oscillator performance when vibration environment is applied worsen, and when serious, also can cause breaking of quartz wafer, causes crystal oscillator thoroughly to lose efficacy.
Development along with electronics miniaturization, the equipment of complete machine vibration damping self has been cancelled huge vibration absorber, then require crystal oscillator itself to there is higher resistance to vibration, yet existing crystal oscillator is because the resistance to vibration of self is far not by far up to the mark and cannot meets practical application, therefore make more resistance to the shaking of crystal oscillator become present stage and need the problem of solution badly.
Utility model content
The purpose of this utility model is to provide based on the resistance to crystal oscillator that shakes of thermostatically controlled height, overcomes existing crystal oscillator and cannot meet vibration-resistant property in the situation that of small volume and meet the requirements of defect simultaneously.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Based on the resistance to crystal oscillator that shakes of thermostatically controlled height, comprise metallic shield shell, be fixed on the vibration isolator in metallic shield shell and be arranged on the oscillatory system on vibration isolator, wherein this oscillatory system is electrically connected to metallic shield shell.
The utility model is in order to realize the function that produces oscillation frequency signal, described oscillatory system is comprised of oscillation module, the isolating amplifier circuit that the oscillation frequency signal of oscillation module generation is amplified and the filter circuit being connected with isolating amplifier circuit output, the oscillating circuit that described oscillation module produces oscillation frequency signal by crystal resonator and auxiliary crystal resonator forms, wherein, oscillating circuit is connected with isolating amplifier circuit.
In order to realize accurate temperature control, described oscillatory system also comprises carries out thermostatically controlled thermostat module to oscillation module, and this thermostat module is connected by thermal coupling with oscillation module.
As a kind of preferred, described thermostat module comprises the temperature sensing circuit being connected with crystal resonator thermal coupling, the constant temperature control circuit being connected with temperature sensing circuit, and wherein this constant temperature control circuit is also connected with temperature sensing circuit thermal coupling.
In order to improve the resistance to vibration of oscillatory system in the utility model, described vibration isolator comprises the fixed block of cylindrical sleeve-shaped and is the contiguous block of copper milling product, wherein the Intermediate Gray open circle of this contiguous block and the piece that is fixed entangle, and are connected with fixed block by the vibration damping silk of being made by damping material.
Further, described oscillatory system is installed built-up circuit plate in the circuit board, and this circuit board spiral shell is contained on contiguous block, and crystal resonator is embedded in the open circle of contiguous block.
In order to realize better the effect of secondary vibration isolation, between described vibration isolator and metallic shield shell, be filled with anti-vibration and shock thing.
As a kind of preferred, described anti-vibration and shock thing is heat-resisting soft polyurethane foam plastics.
Compared with prior art, the utlity model has following beneficial effect:
(1) the utility model is simple in structure, with low cost, is applicable to promoting the use of.
(2) the utility model produces oscillation frequency signal by crystal resonator and oscillation module are set, and because this crystal resonator and oscillation module are all arranged in metallic shield shell, therefore in the process of its generation frequency signal, can not be subject to extraneous any interference, this metallic shield shell can also play and reduce vibration simultaneously, sealing vibration isolator makes it bring into play the effect of better function, kill two birds with one stone, there is substantive distinguishing features and progress.
(3) the utility model can also amplify and filtering the frequency signal producing under crystal resonator and oscillation module acting in conjunction by isolating amplifier circuit and filter circuit, because isolating amplifier circuit and filter circuit all belong to oscillatory system, therefore whole oscillatory system can be welded on circuit board, reduces the volume of whole oscillatory system.
(4) the utility model carries out vibration isolation by vibration isolator, and this vibration isolator comprises the vibration damping silk that fixed block, contiguous block and damping material are made, this fixed block is sleeve-shaped, boring is used for embedding contiguous block, and be connected with contiguous block by vibration damping silk, and crystal resonator is placed on to contiguous block inner chamber, not only can limits the height of crystal oscillator, can play the effect of conserve space and vibration damping simultaneously.
(5) oscillatory system of the present utility model also comprises and carries out thermostatically controlled thermostat module, and this thermostat module is carried out thermostatic control by temperature sensing circuit and constant temperature control circuit to oscillatory system, can in vibrationproof, improve the performance of crystal oscillator.
(6) the utility model has also been inserted vibration isolation material between vibration isolator and metallic shield shell, has further improved the effect of vibration damping.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail, and execution mode of the present utility model includes but not limited to the following example.
Embodiment
Based on the resistance to crystal oscillator that shakes of thermostatically controlled height, comprise for sending the oscillatory system of oscillation frequency signal, thereby wherein in order to there is frequency of oscillation that high resistance to vibration sends rule more to this oscillatory system, this oscillatory system is arranged on vibration isolator, and vibration isolator shell is also provided with for shielding the metallic shield shell of external electromagnetic induction.
This oscillatory system is arranged on circuit board, and wherein this oscillatory system comprises:
Crystal resonator, this crystal resonator is the quartz-crystal resonator that quartz material is made, for generation of frequency signal;
Oscillating circuit, this oscillating circuit is assisted crystal resonator work, forms oscillatory system, and this oscillatory system produces the oscillator signal of certain frequency, completes oscillation functions;
Wherein crystal resonator and oscillating circuit form oscillation module.
Oscillation module is high-precision device, therefore to manufacturing, require or environmental requirement is all very high, and that the frequency producing due to oscillation module is subject to the impact of temperature is very large, therefore for the temperature of oscillation module, controlling is a very important part, in the present embodiment, specially on oscillation module, added a thermostat module, thereby for oscillation module is carried out to temperature control, frequency signal has not been gone beyond the scope within departing from permissible value.
This thermostat module comprises temperature sensing circuit and constant temperature control circuit, and wherein temperature sensing circuit is arranged on oscillation module, for the real time temperature on perception oscillation module; Constant temperature control circuit is also arranged on oscillation module simultaneously, temperature to oscillation module regulates, in order to regulate better the temperature of oscillation module, this temperature sensing circuit is arranged on the position near oscillation module, temperature for perception oscillation module, constant temperature control circuit is also arranged on the position near oscillation module simultaneously, realizes and being connected with the thermal coupling of oscillation module, thereby the temperature of oscillation module is controlled.
Described oscillatory system also comprises the isolating amplifier circuit being connected with crystal resonator output, the filter circuit being connected with isolating amplifier circuit output, for the frequency signal that crystal resonator is produced, carry out filtering and amplification, the frequency signal of exporting at the output of filter circuit is like this highly stable, pure signal.
For the function of oscillation module and thermostat module is described better, this thermostat module and oscillation module are all fixed on a wiring board, built-up circuit plate.
As shown in Figure 1, in the utility model, a most important part is vibration isolator, the vibration damping silk that this vibration isolator comprises contiguous block, fixed block and made by damping material, contiguous block and fixed block are copper milling product, contiguous block Intermediate Gray open circle wherein, the open circle of crystal resonator in the middle of contiguous block, height for reducing oscillatory system, and fixed block is cylindrical shroud tubular, entangle contiguous block, fixed block inside is wound with vibration damping silk, cushions the friction between fixed block and contiguous block, thereby plays the effect of buffer shock-absorbing.
Wherein thermostat module and vibration isolator complement each other, interact, thermostat module improves frequency signal precision for constant oscillation module temperature, vibration isolator is done vibration damping and is processed, can greatly reduce mechanical oscillation, prevent oscillation module frequency of occurrences jitter, the situation that the minimizing life-span, even quartz-crystal resonator broke occurs.
At this vibration isolator, be outside equipped with a metallic shield shell, the impact of isolation external electromagnetic field on inner vibration isolator and circuit board.
As secondary vibration isolation, process, between vibration isolator and metallic shield shell, be filled with heat-resisting soft polyurethane foam plastics, the utility model just can reach the effect of vibration isolation well like this.
According to above-described embodiment, just can well realize the utility model.
Claims (8)
1. based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, comprise metallic shield shell, be fixed on the vibration isolator in metallic shield shell and be arranged on the oscillatory system on vibration isolator, wherein this oscillatory system is electrically connected to metallic shield shell.
2. according to claim 1 based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, described oscillatory system is comprised of oscillation module, the isolating amplifier circuit that the oscillation frequency signal of oscillation module generation is amplified and the filter circuit being connected with isolating amplifier circuit output, the oscillating circuit that described oscillation module produces oscillation frequency signal by crystal resonator and auxiliary crystal resonator forms, wherein, oscillating circuit is connected with isolating amplifier circuit.
3. according to claim 2ly based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, described oscillatory system also comprises carries out thermostatically controlled thermostat module to oscillation module, and this thermostat module is connected by thermal coupling with oscillation module.
4. according to claim 3 based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, described thermostat module comprises the temperature sensing circuit being connected with crystal resonator thermal coupling, the constant temperature control circuit being connected with temperature sensing circuit, wherein this constant temperature control circuit is also connected with temperature sensing circuit thermal coupling.
5. according to claim 4 based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, described vibration isolator comprises the fixed block of cylindrical sleeve-shaped and is the contiguous block of copper milling product, wherein this contiguous block Intermediate Gray open circle and the piece that is fixed entangle, and are connected with fixed block by the vibration damping silk of being made by damping material.
6. according to claim 5ly based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, described oscillatory system is installed built-up circuit plate in the circuit board, and this circuit board spiral shell is contained on contiguous block, and crystal resonator is embedded in the open circle of contiguous block.
7. according to claim 6ly based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, between described vibration isolator and metallic shield shell, be filled with anti-vibration and shock thing.
8. according to claim 7ly based on the resistance to crystal oscillator that shakes of thermostatically controlled height, it is characterized in that, described anti-vibration and shock thing is heat-resisting soft polyurethane foam plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320450473.2U CN203457119U (en) | 2013-07-26 | 2013-07-26 | Thermostatic control-based highly anti-vibration crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320450473.2U CN203457119U (en) | 2013-07-26 | 2013-07-26 | Thermostatic control-based highly anti-vibration crystal oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203457119U true CN203457119U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320450473.2U Withdrawn - After Issue CN203457119U (en) | 2013-07-26 | 2013-07-26 | Thermostatic control-based highly anti-vibration crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203457119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346750A (en) * | 2013-07-26 | 2013-10-09 | 成都天奥电子股份有限公司 | High-vibration-resisting crystal oscillator based on constant-temperature control |
-
2013
- 2013-07-26 CN CN201320450473.2U patent/CN203457119U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346750A (en) * | 2013-07-26 | 2013-10-09 | 成都天奥电子股份有限公司 | High-vibration-resisting crystal oscillator based on constant-temperature control |
| CN103346750B (en) * | 2013-07-26 | 2016-01-13 | 成都天奥电子股份有限公司 | Based on the resistance to crystal oscillator that shakes of thermostatically controlled height |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140226 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |