CN103475330A - Frequency compensation device of sensor based on three-level cascaded active device - Google Patents
Frequency compensation device of sensor based on three-level cascaded active device Download PDFInfo
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- CN103475330A CN103475330A CN2013103920970A CN201310392097A CN103475330A CN 103475330 A CN103475330 A CN 103475330A CN 2013103920970 A CN2013103920970 A CN 2013103920970A CN 201310392097 A CN201310392097 A CN 201310392097A CN 103475330 A CN103475330 A CN 103475330A
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- frequency compensation
- frequency
- active device
- compensation device
- low pass
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Abstract
The invention discloses a frequency compensation device of a sensor based on a three-level cascaded active device. The frequency compensation device comprises a sensor characteristic analog circuit module and a frequency compensation circuit module. The sensor characteristic analog circuit module is mainly composed of a sine wave voltage signal generator and a low pass filter and is used for simulating the characteristics of signal loss within a frequency range of 4.5-100 K of the sensor; the frequency compensation circuit module is used for carrying out high-performance compensation on the lost part. By adopting the three-level cascaded active device, high-performance frequency compensation can be achieved, and the frequency compensation device has the advantages of simple circuit, convenience for debugging, small voltage gain fluctuation and small temperature influence.
Description
Technical field
The present invention relates to the application of electronic technology field, especially a kind of frequency compensation device of the transducer based on the three-stage cascade active device.
Background technology
Frequency compensation is a very important problem in application of electronic technology field always.Its main purpose is to make the input and output Frequency Synchronization, prevents the frequency change decay or loses.
All adopt the digital phase-locked loop frequency compensating circuit at present a lot of amplifying circuits, yet it has the circuit complexity, the shortcomings such as debugging inconvenience, most of digital phase-locked loop integrated circuit is even arranged when working in high frequency environment lower time, temperature influence is very large, need to add the temperature compensating circuit and just can work.
Summary of the invention
Technical problem to be solved by this invention is the defect for background technology, and the frequency compensation device of the transducer based on the three-stage cascade active device that a kind of circuit is simple, debugging is convenient, the voltage gain fluctuation is little, temperature influence is little is provided.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
The frequency compensation device of the transducer based on the three-stage cascade active device, comprise sensor characteristics analog module and frequency compensated circuit module, the sensor characteristics analog module is comprised of sine voltage signal generator and low pass filter, and the frequency compensated circuit module is comprised of first order band stop filter, second level amplifier, third level low pass filter.
As the further prioritization scheme of the present invention, the low pass filter of described sensor characteristics analog module adopts the OPA2134 chip.
As the further prioritization scheme of the present invention, the first order band stop filter of described frequency compensated circuit adopts the NE5534 chip.
As the further prioritization scheme of the present invention, the second level amplifier of described frequency compensated circuit adopts the OPA2134 chip.
As the further prioritization scheme of the present invention, the third level low pass filter of described frequency compensated circuit adopts the NE5534 chip.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1. compensation performance is high;
2. the voltage gain fluctuation is little;
3. temperature influence is little.
The accompanying drawing explanation
Fig. 1 is hardware system schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, the invention discloses a kind of frequency compensation device of the transducer based on the three-stage cascade active device, comprise general purpose transducer simulated behavior circuit module and frequency compensated circuit module, the sensor characteristics analog module is comprised of sine voltage signal generator and low pass filter, and the frequency compensated circuit module is comprised of first order band stop filter, second level amplifier, third level low pass filter.
The low pass filter of described sensor characteristics analog module adopts the OPA2134 chip.
The first order band stop filter of described frequency compensated circuit adopts the NE5534 chip.
The second level amplifier of described frequency compensated circuit adopts the OPA2134 chip.
The third level low pass filter of described frequency compensated circuit adopts the NE5534 chip.
During work, the signal of transducer is sent in the simulation of sensor characteristics analog module, and this signal has the characteristic of signal deletion in the 4.5K-100K frequency range.
When entering the frequency compensated circuit module, the signal of sensor characteristics analog module output at first through first order band stop filter, realizes spread spectrum, amplifier through the second level is amplified again, realize the high-frequency cut-off rate is expanded to 100kHz at the low pass filter place of the third level, reach frequency compensated effect.
Claims (5)
1. the frequency compensation device of the transducer based on the three-stage cascade active device, it is characterized in that, comprise sensor characteristics analog module and frequency compensated circuit module, the sensor characteristics analog module is comprised of sine voltage signal generator and low pass filter, and the frequency compensated circuit module is comprised of first order band stop filter, second level amplifier, third level low pass filter.
2. the frequency compensation device of the transducer based on the three-stage cascade active device according to claim 1, is characterized in that, the low pass filter of described sensor characteristics analog module adopts the OPA2134 chip.
3. the frequency compensation device of the transducer based on the three-stage cascade active device according to claim 1, is characterized in that, the first order band stop filter of described frequency compensated circuit adopts the NE5534 chip.
4. the frequency compensation device of the transducer based on the three-stage cascade active device according to claim 1, is characterized in that, the second level amplifier of described frequency compensated circuit adopts the OPA2134 chip.
5. the frequency compensation device of the transducer based on the three-stage cascade active device according to claim 1, is characterized in that, the third level low pass filter of described frequency compensated circuit adopts the NE5534 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103920970A CN103475330A (en) | 2013-09-03 | 2013-09-03 | Frequency compensation device of sensor based on three-level cascaded active device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103920970A CN103475330A (en) | 2013-09-03 | 2013-09-03 | Frequency compensation device of sensor based on three-level cascaded active device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103475330A true CN103475330A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103920970A Withdrawn CN103475330A (en) | 2013-09-03 | 2013-09-03 | Frequency compensation device of sensor based on three-level cascaded active device |
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| CN (1) | CN103475330A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967513B1 (en) * | 2002-08-29 | 2005-11-22 | Analog Devices, Inc. | Phase-locked loop filter with out of band rejection in low bandwidth mode |
| CN2755579Y (en) * | 2004-09-23 | 2006-02-01 | 上海隆延测控信息技术有限公司 | Multifunctional pen vibration measuring device |
| CN202837368U (en) * | 2012-09-12 | 2013-03-27 | 北京东方计量测试研究所 | AC measuring device superposed large DC bias |
| CN203445849U (en) * | 2013-09-03 | 2014-02-19 | 南京邮电大学 | Sensor frequency compensation apparatus based on three-stage cascading active device |
-
2013
- 2013-09-03 CN CN2013103920970A patent/CN103475330A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967513B1 (en) * | 2002-08-29 | 2005-11-22 | Analog Devices, Inc. | Phase-locked loop filter with out of band rejection in low bandwidth mode |
| CN2755579Y (en) * | 2004-09-23 | 2006-02-01 | 上海隆延测控信息技术有限公司 | Multifunctional pen vibration measuring device |
| CN202837368U (en) * | 2012-09-12 | 2013-03-27 | 北京东方计量测试研究所 | AC measuring device superposed large DC bias |
| CN203445849U (en) * | 2013-09-03 | 2014-02-19 | 南京邮电大学 | Sensor frequency compensation apparatus based on three-stage cascading active device |
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| PB01 | Publication | ||
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20131225 |