CN102928228A - Status detection circuit of bearing - Google Patents
Status detection circuit of bearing Download PDFInfo
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- CN102928228A CN102928228A CN2012104387832A CN201210438783A CN102928228A CN 102928228 A CN102928228 A CN 102928228A CN 2012104387832 A CN2012104387832 A CN 2012104387832A CN 201210438783 A CN201210438783 A CN 201210438783A CN 102928228 A CN102928228 A CN 102928228A
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- resistance
- operational amplifier
- detection circuit
- bearing
- state detection
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Abstract
The invention discloses a status detection circuit of a bearing. The status detection circuit of the bearing comprises a first amplification circuit, a second amplification circuit and a microprocessor. The microprocessor is respectively connected with the first amplification circuit and the second amplification circuit. The status detection circuit of the bearing is used for detecting the bearing status and has the advantages of being high in accuracy, strong in antijamming capacity and the like.
Description
Technical field
The invention discloses a kind of state detection circuit of bearing, be specially a kind of sensor in conjunction with the state detection circuit of the bearing of electronic technology.
Background technology
It is a kind of bearing state in use of understanding and grasping that bearing state detects with fault diagnosis technology, determines that it is whole or local normal or unusual, and can forecast the technology of fault progression trend.In the commercial Application system, rolling bearing is vitals wherein, and the fault that rolling bearing causes is to cause and the major reason of equipment failure, particularly at the rolling bearing of telling under the fully loaded transportation condition, because the prolonged and repeated effect of workplace contact stress, very easily cause fatigue, crackle degrades, the faults such as impression, produce fracture thereby cause bearing, deadlocked, the phenomenons such as scaling loss.And these faults can make the running accuracy of bearing reduce, and produce vibrations, noise, the rotational resistance of increase bearing.Make the most at last bearing be subject to retardance and stuck.Cause the inefficacy of industrial machinery system.Thereby be very important to the detection of bearing state.Therefore, a kind of state detection circuit of bearing is absolutely necessary.
Summary of the invention
The object of the present invention is to provide a kind of state detection circuit of bearing, be used for measurement and the correction of rotating machinery related pressure.
The technical scheme that realizes above-mentioned purpose is: a kind of state detection circuit of bearing comprises filtering and amplifying circuit 100, amplifying circuit 200, microprocessor U3, analog to digital converter 10 and indicating device 300.
Above-mentioned amplifying circuit 100 comprises the first operational amplifier U1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, wherein, described sensor output electric quantity signal Vin and described the first operational amplifier U1 positive input resistance in series R5, the described resistance R 2 of connecting between described the first operational amplifier U1 positive input and the reference power source 1/2 big or small level, the described resistance R 3 of connecting between described the first operational amplifier U1 inverting input and the ground wire datum is with the described resistance R 4 of connecting between described the first operational amplifier output OUT1.。
Above-mentioned amplifying circuit 200 comprises operational amplifier U2, resistance R 5, resistance R 6, resistance R 7, resistance R 8, wherein, wherein, the described sensor output electric quantity signal Vin described resistance R 7 of connecting with described the second operational amplifier U2 reverse input end, described the second operational amplifier U2 reverse input end is exported the described resistance R 8 of connecting between the OUT2 with described the second operational amplifier, the described resistance R 5 of connecting between described the second operational amplifier U2 normal phase input end and the ground wire reference power source 1/2 big or small level, described the second operational amplifier U2 positive input with reference to the described resistance R 6 of connecting between the ground wire level.
Above-mentioned U3 microprocessor is with at least 2 A/D modular converters.
The output terminal OUT1 of above-mentioned the first operational amplifier U1 is connected to the A/D modular converter of described microprocessor U3, and the output terminal OUT2 of described the second operational amplifier U2 is connected to the A/D modular converter of described microprocessor U3.
The invention has the beneficial effects as follows: the present invention is used for bearing state and detects, and has the advantages such as high precision, strong anti-interference ability.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with description of drawings preferred implementation strategy of the present invention.
Please refer to Fig. 1, provided a kind of state detection circuit preferred embodiments of bearing among the figure.
This circuit comprises filtering and amplifying circuit 100, amplifying circuit 200, microprocessor U3, analog to digital converter 10 and indicating device 300.
Amplifying circuit 100 comprises operational amplifier U1, resistance R 1, resistance R 2, resistance R 3, resistance R 4.
Sensor output electric quantity signal Vin and operational amplifier U1 positive input resistance in series R5, resistance in series R2 between operational amplifier U1 positive input and the reference power source 1/2 big or small level, resistance in series R3 between operational amplifier U1 inverting input and the ground wire datum, and resistance in series R4 between the amplifier output OUT1.
Amplifying circuit 200 comprises operational amplifier U2, resistance R 5, resistance R 6, resistance R 7, resistance R 8.
Sensor output electric quantity signal Vin and operational amplifier U2 reverse input end resistance in series R7, resistance in series R8 between operational amplifier U2 reverse input end and the operational amplifier output OUT2, resistance in series R5 between operational amplifier U2 normal phase input end and the ground wire reference power source 1/2 big or small level, operational amplifier U2 positive input with reference to the described resistance R 6 of connecting between the ground wire level.
The output terminal OUT2 that the output terminal OUT1 of operational amplifier U1 is connected to the described operational amplifier U2 of A/D modular converter of described microprocessor U3 is connected to the A/D modular converter of described microprocessor U3.
During this example was implemented, U3 adopted the MSP430 low power processor.
R1=R3=R5=R7=100k, R2=R4=R6=R8=100k, the transport function of amplifying circuit 100 is that formula 1 is expressed as follows:
OUT1=VCC/2+Vin; Formula 1
The transport function of amplifying circuit 200 is that formula 2 is expressed as follows:
OUT2=VCC/2-Vin; Formula 2
Carrying out after A/D processes formula 1 and formula 2 additions being obtained formula 3 at MSP430 is expressed as follows:
OUT1+OUT2=2Vin; Formula 3
Principle of the present invention is: utilize the principle of differential amplification, the signal gain that can double is eliminated error, bearing state is detected have the characteristics of high precision, strong anti-interference ability.
Below embodiment has been described in detail the present invention by reference to the accompanying drawings, and those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details among the embodiment should not consist of limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (6)
1. the state detection circuit of a bearing, it is characterized in that, comprise the first amplifying circuit, the second amplifying circuit, microprocessor and display unit, wherein, described microprocessor is connected with described the first amplifying circuit, described the second amplifying circuit and described display unit respectively.
2. the state detection circuit of bearing according to claim 1, it is characterized in that, described the first amplifying circuit comprises the first operational amplifier U1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, wherein, the described sensor output electric quantity signal Vin described resistance R 5 of connecting with described the first operational amplifier U1 positive input, the described resistance R 2 of connecting between described the first operational amplifier U1 positive input and the reference power source 1/2 big or small level, the described resistance R 3 of connecting between described the first operational amplifier U1 inverting input and the ground wire datum is with the described resistance R 4 of connecting between described the first operational amplifier output OUT1.
3. the state detection circuit of bearing according to claim 1, it is characterized in that, described the second amplifying circuit comprises operational amplifier U2, resistance R 5, resistance R 6, resistance R 7, resistance R 8, wherein, the described sensor output electric quantity signal Vin described resistance R 7 of connecting with described the second operational amplifier U2 reverse input end, described the second operational amplifier U2 reverse input end is exported the described resistance R 8 of connecting between the OUT2 with described the second operational amplifier, the described resistance R 5 of connecting between described the second operational amplifier U2 normal phase input end and the ground wire reference power source 1/2 big or small level, described the second operational amplifier U2 positive input with reference to the described resistance R 6 of connecting between the ground wire level.
4. the state detection circuit of bearing according to claim 1 is characterized in that, described microprocessor is with at least 2 A/D modular converters.
5. the state detection circuit of bearing according to claim 1, it is characterized in that, the output terminal OUT1 of described the first operational amplifier U1 is connected to the A/D modular converter of described microprocessor U3, and the output terminal OUT2 of described the second operational amplifier U2 is connected to the A/D modular converter of described microprocessor U3.
6. the state detection circuit of bearing according to claim 1 is characterized in that, described resistance R 1, R3, R5, R7 are fully equal, and described resistance R 2, R4, R6, R8 are fully equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104387832A CN102928228A (en) | 2012-11-06 | 2012-11-06 | Status detection circuit of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104387832A CN102928228A (en) | 2012-11-06 | 2012-11-06 | Status detection circuit of bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102928228A true CN102928228A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104387832A Pending CN102928228A (en) | 2012-11-06 | 2012-11-06 | Status detection circuit of bearing |
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| CN (1) | CN102928228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811387A (en) * | 2020-06-30 | 2020-10-23 | 中国电子科技集团公司第十六研究所 | Device for measuring resistance between inner ring and outer ring of bearing in rotating state |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829269A (en) * | 1994-07-14 | 1996-02-02 | Texas Instr Japan Ltd | Temperature compensating circuit |
| EP2058640A2 (en) * | 2007-11-07 | 2009-05-13 | Sensdata Limited | Apparatus and method for monitoring a system |
| CN101825659A (en) * | 2010-05-10 | 2010-09-08 | 上海信翊电气控制技术有限公司 | Electric quantity signal online detecting method |
| CN201935768U (en) * | 2011-01-24 | 2011-08-17 | 罗光寿 | Stretching tension test circuit for steel wire rope |
-
2012
- 2012-11-06 CN CN2012104387832A patent/CN102928228A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829269A (en) * | 1994-07-14 | 1996-02-02 | Texas Instr Japan Ltd | Temperature compensating circuit |
| EP2058640A2 (en) * | 2007-11-07 | 2009-05-13 | Sensdata Limited | Apparatus and method for monitoring a system |
| CN101825659A (en) * | 2010-05-10 | 2010-09-08 | 上海信翊电气控制技术有限公司 | Electric quantity signal online detecting method |
| CN201935768U (en) * | 2011-01-24 | 2011-08-17 | 罗光寿 | Stretching tension test circuit for steel wire rope |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811387A (en) * | 2020-06-30 | 2020-10-23 | 中国电子科技集团公司第十六研究所 | Device for measuring resistance between inner ring and outer ring of bearing in rotating state |
| CN111811387B (en) * | 2020-06-30 | 2021-11-26 | 中国电子科技集团公司第十六研究所 | Device for measuring resistance between inner ring and outer ring of bearing in rotating state |
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Application publication date: 20130213 |