CN103017928B - Ultrasonic power supply temperature detection circuit - Google Patents
Ultrasonic power supply temperature detection circuit Download PDFInfo
- Publication number
- CN103017928B CN103017928B CN201210525779.XA CN201210525779A CN103017928B CN 103017928 B CN103017928 B CN 103017928B CN 201210525779 A CN201210525779 A CN 201210525779A CN 103017928 B CN103017928 B CN 103017928B
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- Prior art keywords
- capacitor
- pin
- resistance
- lm321a
- prime amplifier
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Abstract
The invention discloses an ultrasonic power supply temperature detection circuit which comprises a platinum temperature resistor Rx, a first transient suppressor diode D1, a second transient suppressor diode D2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first resistor R1, a second resistor R2, a third resistor R3, an inductor L1, an LM321A pre-amplifier U1 and an ADS1100SA/D (analogue-to-digital) conversion chip U2. The ultrasonic power supply temperature detection circuit has the advantages of utilizing mature and reliable components which are low in cost and rich in source; providing a high voltage protection effect, limiting the overvoltage voltage within a certain range and preventing the high voltage of the detecting end from damaging a rear circuit; providing an n-typed filter circuit and filtering harmful high frequency components, improving the signal-to-noise and providing good signals for the A/D conversion after measuring signals passing through the filter circuit.
Description
Technical field
The invention belongs to industrial control technology field, relate to a kind of circuit, be specifically related to a kind of ultrasonic power temperature sensing circuit.
Background technology
Ultrasonic power is also referred to as ultrasonic wave generating source, and its effect is that electric energy is converted to the high-frequency ac electric signal matching with ultrasonic transducer.It is larger that ultrasonic power supply conversion efficiency is affected by match circuit, consumes electric energy large, and not only oscillator easily generates heat, and transformer, inductance easily generate heat, and CPU is easily heating also.Although can lower the temperature with large area heat radiator and fan, for preventing that temperature overheating from causing CPU to burn, need to increase ultrasonic power temperature sensing circuit and carry out Real-Time Monitoring heatsink temperature.Once monitor excess Temperature, just need to take the necessary measures as reduced power, out of service, give the alarm etc.
Due to the singularity of ultrasonic power, in the ultrasonic transducer course of work, due to transformer and the stronger electromagnetic interference (EMI) of inductance existence, oscillator vibrations cause very large high frequency noise.During simultaneously due to power work, output end voltage is up to upper kilovolt, and traditional temperature sensing circuit can not be used in this system.Summary of the invention
Object of the present invention is exactly the above-mentioned deficiency for existing testing circuit, and a kind of ultrasonic power temperature sensing circuit is provided.
A kind of ultrasonic power temperature sensing circuit of the present invention, comprises platinum temperature detecting resistance R
x, the first Transient Suppression Diode D
1, the second Transient Suppression Diode D
2, the first capacitor C
1, the second capacitor C
2, the 3rd capacitor C
3, the 4th capacitor C
4, the 5th capacitor C
5, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, inductance L
1, LM321A prime amplifier U1, ADS1100A/D conversion chip U2.
Platinum resistance R
xone end and the first Transient Suppression Diode D
1anode, inductance L
1one end, the first capacitor C
1one end connect, the first Transient Suppression Diode D
1negative electrode and the second Transient Suppression Diode D
2negative electrode connect, inductance L
1the other end and the first resistance R
1one end, the second capacitor C
22 pin of one end, prime amplifier LM321A connect, platinum resistance R
xthe other end, the second Transient Suppression Diode D
2anode, the first capacitor C
1the other end, the first resistance R
1the other end, the second capacitor C
2the other end be connected with 3 pin of LM321A prime amplifier U1,4 pin of LM321A prime amplifier U1 and the second resistance R
2one end, the 3rd resistance R
3one end connect and connect-15V power supply, 5 pin of LM321A prime amplifier U1 and the second resistance R
2the other end connect, 6 pin of LM321A prime amplifier U1 and the 3rd resistance R
3the other end connect, 7 pin of LM321A prime amplifier U1 are connected with+15V power supply, 1 pin of LM321A prime amplifier U1 and the 3rd capacitor C
3one end be connected with 1 pin of ADS1100A/D conversion chip U2,8 pin of LM321A prime amplifier U1 and the 4th capacitor C
4one end connect, the 4th capacitor C
4other end ground connection, the 3rd capacitor C
3the other end be connected with 2 pin of ADS1100A/D conversion chip U2,5 pin of ADS1100A/D conversion chip U2 and the 5th capacitor C
5one end be connected with+5V power supply, the 5th capacitor C
5other end ground connection, the 6 pin ground connection of ADS1100A/D conversion chip U2,3 pin of ADS1100A/D conversion chip U2 and 4 pin are output signal terminal.
Beneficial effect: the components and parts that the present invention adopts become and be ripe reliable, with low cost, and source is abundant.The present invention has high voltage protective effect, and too high voltages restriction within the specific limits, the high voltage that prevents test side causes damage to circuit below.Have ∏ type filtering circuit, measuring-signal is after filtering after circuit, and filtering is harmful to radio-frequency component, improves to-noise ratio, for A/D conversion provides good signal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present invention.
As shown in Figure 1, a kind of ultrasonic power temperature sensing circuit, comprises platinum temperature detecting resistance R
x, the first Transient Suppression Diode D
1, the second Transient Suppression Diode D
2, the first capacitor C
1, the second capacitor C
2, the 3rd capacitor C
3, the 4th capacitor C
4, the 5th capacitor C
5, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, inductance L
1, LM321A prime amplifier U1, ADS1100A/D conversion chip U2.
Platinum resistance R
xone end and the first Transient Suppression Diode D
1anode, inductance L
1one end, the first capacitor C
1one end connect, the first Transient Suppression Diode D
1negative electrode and the second Transient Suppression Diode D
2negative electrode connect, inductance L
1the other end and the first resistance R
1one end, the second capacitor C
22 pin of one end, prime amplifier LM321A connect, platinum resistance R
xthe other end, the second Transient Suppression Diode D
2anode, the first capacitor C
1the other end, the first resistance R
1the other end, the second capacitor C
2the other end be connected with 3 pin of LM321A prime amplifier U1,4 pin of LM321A prime amplifier U1 and the second resistance R
2one end, the 3rd resistance R
3one end connect and connect-15V power supply, 5 pin of LM321A prime amplifier U1 and the second resistance R
2the other end connect, 6 pin of LM321A prime amplifier U1 and the 3rd resistance R
3the other end connect, 7 pin of LM321A prime amplifier U1 are connected with+15V power supply, 1 pin of LM321A prime amplifier U1 and the 3rd capacitor C
3one end be connected with 1 pin of ADS1100A/D conversion chip U2,8 pin of LM321A prime amplifier U1 and the 4th capacitor C
4one end connect, the 4th capacitor C
4other end ground connection, the 3rd capacitor C
3the other end be connected with 2 pin of ADS1100A/D conversion chip U2,5 pin of ADS1100A/D conversion chip U2 and the 5th capacitor C
5one end be connected with+5V power supply, the 5th capacitor C
5other end ground connection, the 6 pin ground connection of ADS1100A/D conversion chip U2,3 pin of ADS1100A/D conversion chip U2 and 4 pin are output signal terminal.
The first Transient Suppression Diode D of the present invention
1with the second Transient Suppression Diode D
2form high tension protection circuit, effect is too high voltages restriction within the specific limits, and the high voltage that prevents test side causes damage to circuit below.The first capacitor C
1, inductance L
1, the first resistance R
1with the second capacitor C
2form together ∏ type filtering circuit, measuring-signal is after filtering after circuit, and filtering is harmful to radio-frequency component.Prime amplifier LM321A and the second resistance R
2, the 3rd resistance R
3form together the circuit of determining enlargement factor.The 3rd capacitor C
3with the 5th capacitor C
4form filtering circuit, remove the high frequency noise that amplifier LM321A produces, improve to-noise ratio, for A/D conversion chip, ADS1100S provides good signal.A/D conversion chip ADS1100S converts digital signal to simulating signal and offers CPU processing.
Claims (1)
1. a ultrasonic power temperature sensing circuit, comprises platinum temperature detecting resistance R
x, the first Transient Suppression Diode D
1, the second Transient Suppression Diode D
2, the first capacitor C
1, the second capacitor C
2, the 3rd capacitor C
3, the 4th capacitor C
4, the 5th capacitor C
5, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, inductance L
1, LM321A prime amplifier U1, ADS1100A/D conversion chip U2;
It is characterized in that: platinum resistance R
xone end and the first Transient Suppression Diode D
1anode, inductance L
1one end, the first capacitor C
1one end connect, the first Transient Suppression Diode D
1negative electrode and the second Transient Suppression Diode D
2negative electrode connect, inductance L
1the other end and the first resistance R
1one end, the second capacitor C
22 pin of one end, prime amplifier LM321A connect, platinum resistance R
xthe other end, the second Transient Suppression Diode D
2anode, the first capacitor C
1the other end, the first resistance R
1the other end, the second capacitor C
2the other end be connected with 3 pin of LM321A prime amplifier U1,4 pin of LM321A prime amplifier U1 and the second resistance R
2one end, the 3rd resistance R
3one end connect and connect-15V power supply, 5 pin of LM321A prime amplifier U1 and the second resistance R
2the other end connect, 6 pin of LM321A prime amplifier U1 and the 3rd resistance R
3the other end connect, 7 pin of LM321A prime amplifier U1 are connected with+15V power supply, 1 pin of LM321A prime amplifier U1 and the 3rd capacitor C
3one end be connected with 1 pin of ADS1100A/D conversion chip U2,8 pin of LM321A prime amplifier U1 and the 4th capacitor C
4one end connect, the 4th capacitor C
4other end ground connection, the 3rd capacitor C
3the other end be connected with 2 pin of ADS1100A/D conversion chip U2,5 pin of ADS1100A/D conversion chip U2 and the 5th capacitor C
5one end be connected with+5V power supply, the 5th capacitor C
5other end ground connection, the 6 pin ground connection of ADS1100A/D conversion chip U2,3 pin of ADS1100A/D conversion chip U2 and 4 pin are output signal terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210525779.XA CN103017928B (en) | 2012-12-04 | 2012-12-04 | Ultrasonic power supply temperature detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210525779.XA CN103017928B (en) | 2012-12-04 | 2012-12-04 | Ultrasonic power supply temperature detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103017928A CN103017928A (en) | 2013-04-03 |
| CN103017928B true CN103017928B (en) | 2014-07-16 |
Family
ID=47966788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210525779.XA Expired - Fee Related CN103017928B (en) | 2012-12-04 | 2012-12-04 | Ultrasonic power supply temperature detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103017928B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015005054A (en) * | 2013-06-19 | 2015-01-08 | セイコーインスツル株式会社 | Voltage regulator |
| RU2624410C1 (en) * | 2016-07-11 | 2017-07-03 | Общество с ограниченной ответственностью "МИП Уфимского государственного нефтяного технического университета "Интеллектуальные системы управления" | Method of measuring high temperature of inhomogeneous medium |
| CN106840369A (en) * | 2017-02-17 | 2017-06-13 | 杭州电子科技大学 | A kind of ultrasonic sound intensity detection circuit for being applied to traditional Chinese medicine extraction |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3231996C2 (en) * | 1982-08-27 | 1988-05-05 | Endress U. Hauser Gmbh U. Co, 7867 Maulburg | Resistance thermometer |
| CN2929679Y (en) * | 2006-06-23 | 2007-08-01 | 中国石油天然气集团公司 | Temperature measurer |
| CN202255641U (en) * | 2011-08-12 | 2012-05-30 | 北京斯贝克科技有限责任公司 | Temperature warning direct-current circuit |
| CN202442810U (en) * | 2012-01-19 | 2012-09-19 | 东北石油大学秦皇岛分校 | Thermal resistor temperature measuring device |
| CN203053602U (en) * | 2012-12-04 | 2013-07-10 | 杭州成功超声电源技术有限公司 | Ultrasonic power supply temperature detection circuit |
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2012
- 2012-12-04 CN CN201210525779.XA patent/CN103017928B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103017928A (en) | 2013-04-03 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20151204 |
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| EXPY | Termination of patent right or utility model |