CN104180749A - Detecting circuit of displacement sensor - Google Patents
Detecting circuit of displacement sensor Download PDFInfo
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- CN104180749A CN104180749A CN201310226515.9A CN201310226515A CN104180749A CN 104180749 A CN104180749 A CN 104180749A CN 201310226515 A CN201310226515 A CN 201310226515A CN 104180749 A CN104180749 A CN 104180749A
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Abstract
The invention relates to a detecting circuit of a displacement sensor. The displacement sensor comprises an acquiring coil, an operational amplifier circuit for outputting an analog signal, an excitation signal generating circuit for generating an excitation signal applied to the two ends of the acquiring coil, a phase shifting circuit used for shifting the phase of a signal, generated by the excitation signal, of the acquiring coil, and a power module for supplying power to each circuit. The detecting circuit achieves simple debugging and higher output signal precision.
Description
Technical field
The present invention relates to electric circuit inspection technical field, particularly relate to a kind of testing circuit of displacement transducer.
Background technology
Moment sensor is applied and has been arrived very consequence in various machine industry equipment, has not had sensor that accurate location is provided, and the product that machine industry processes all cannot use.Sensor even becomes an important attraction of machine industry manufacturer.The sensor of superior performance provides accurate location will to these products in process, has reduced some unnecessary troubles, thereby has brought great economic benefit to manufacturer, has also driven the industry development of machine industry.
Along with the development of machine industry, require also more and more higher to sensor device.Therefore high precision, the life-span is long, anti-oily water resistant antidusting antidetonation, the sensor that can work in rugged environment is the needs of the times.
In current sensor, measure displacement and mainly contain light signal collection processing and two kinds of devices of electrical signal collection processing.Electrical signal collection treating apparatus is equipped with by one the chi forming through magnetic steel ball and the steel pipe of special processing and adds that reading and the digital display meter three parts with drive coil and collection coil and signal processing circuit form.Supply the sine wave exciting signal of 12V voltage and about 3V to read head by digital display meter, then gather feeble signal that coil gathers by 4 logical amplifiers, through one, secondary amplifies, low pass, the high pass circuit out sine wave of a standard, to digital display meter processing, finally shows reading, namely shift value on charactron.
The shortcoming that in the market this kind of displacement transducer exists is that debugging is complicated, and the signal accuracy of output is not high enough.Therefore wish that proposing a kind of sensor can overcome above shortcoming, makes it have debugging simple, the feature that output signal accuracy is high.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of testing circuit of displacement transducer, makes displacement transducer debugging simple, and output accuracy is high.
The technical solution adopted for the present invention to solve the technical problems is: a kind of testing circuit of displacement transducer is provided, and described displacement transducer comprises collection coil, also comprises: discharge circuit, outputting analog signal; Pumping signal produces circuit, and for generation of pumping signal, described pumping signal is carried in the two ends of described collection coil; Phase-shift circuit, carries out phase shifts for the signal that collection coil is produced by pumping signal; Power module is used to each circuit supply.
Described external pumping signal is carried in coil two ends, coil acquisition module processing of circuit tickler signal.
Described coil at least comprises the first collection coil, and second gathers coil, and the 3rd gathers coil, and the 4th gathers coil, wherein
First gathers coil is connected with the second collection coil, and the 3rd collection coil and the 4th gathers coil and is connected.
Described phase-shift circuit comprises the first operational amplifier, the second operational amplifier, and the 3rd operational amplifier, four-operational amplifier, the 5th operational amplifier, the 6th operational amplifier, the 7th operational amplifier, the 8th calculates amplifier; The input end of described the first operational amplifier is connected with the output terminal of the first collection coil, between negative input end and output terminal, is connected by a resistance; The negative input end of described the second operational amplifier is connected with the second collection coil output, between positive input terminal and output terminal, is connected by an electric capacity; The input end of described the 3rd operational amplifier is connected with the 3rd output terminal that gathers coil, between negative input end and output terminal, is connected by a resistance; The negative input end of described four-operational amplifier and the 4th gathers coil output and is connected, and between positive input terminal and output terminal, is connected by an electric capacity; The positive input terminal of described the 5th operational amplifier is connected by a resistance respectively with the output terminal of the first operational amplifier and the second operational amplifier, between negative input end and output terminal, is connected by a resistance; The positive input terminal of described the 6th operational amplifier is connected by a resistance respectively with the output terminal of the 3rd operational amplifier and four-operational amplifier, and negative input end is connected by a resistance with output terminal; The positive input terminal of described the 7th operational amplifier is connected with the output terminal of the 6th operational amplifier with the 5th operational amplifier, and output terminal is connected with negative input end by a resistance, is connected with positive input terminal by an electric capacity; The positive input terminal of described the 8th operational amplifier is connected with the output terminal of the 7th operational amplifier, and output terminal is connected with positive input terminal with negative input end by a resistance respectively.
Adopt above-mentioned technical scheme, the present invention compared with prior art, there is following advantage and good effect: the present invention can move the magnetic field changing on ball bar ruler, read head processing of circuit obtains phase shift signal, process again the TTL signal of final output difference through single-chip microcomputer, can be widely used in various lathes, and reach enough precision, debugging is simple.
Brief description of the drawings
Fig. 1 functional-block diagram of the present invention;
The circuit diagram of Fig. 2 collection signal of the present invention;
Fig. 3 circuit diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that, after having read content of the present invention, those skilled in the art can make various changes or modifications the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
The present invention relates to a kind of testing circuit of displacement transducer, as shown in Figure 1, described displacement transducer comprises collection coil, also comprises: discharge circuit, outputting analog signal; Pumping signal produces circuit, and for generation of pumping signal, described pumping signal is carried in the two ends of described collection coil; Phase-shift circuit, carries out phase shifts for the signal that collection coil is produced by pumping signal; Power module is used to each circuit supply.
Described external pumping signal is carried in coil two ends, coil acquisition module processing of circuit tickler signal.
Described coil at least comprises the first collection coil, and second gathers coil, and the 3rd gathers coil, and the 4th gathers coil, and wherein the first collection coil is connected with the second collection coil, and the 3rd collection coil and the 4th gathers coil and is connected.
Described phase-shift circuit comprises the first operational amplifier IC2A, the second operational amplifier IC2C, the 3rd operational amplifier IC2B, four-operational amplifier IC2D, the 5th operational amplifier IC1A, the 6th operational amplifier IC1B, the 7th operational amplifier IC1C, the 8th calculates amplifier IC1D; The input end of described the first operational amplifier IC2A is connected with the output terminal of the first collection coil, between negative input end and output terminal, is connected by a resistance R 5; The negative input end of described the second operational amplifier IC2C is connected with the second collection coil output, between positive input terminal and output terminal, is connected by a capacitor C 30; The input end of described the 3rd operational amplifier IC2B is connected with the 3rd output terminal that gathers coil, between negative input end and output terminal, is connected by a resistance R 43; The negative input end of described four-operational amplifier IC2D and the 4th gathers coil output and is connected, and between positive input terminal and output terminal, is connected by a capacitor C 39; The positive input terminal of described the 5th operational amplifier IC1A is connected by a resistance respectively with the output terminal of the first operational amplifier IC2A and the second operational amplifier IC2C, between negative input end and output terminal, is connected by a resistance R 12; The positive input terminal of described the 6th operational amplifier IC1B is connected by a resistance R 38 respectively with the output terminal of the 3rd operational amplifier IC2B and four-operational amplifier IC2D, and negative input end is connected by a resistance R 9 with output terminal; The positive input terminal of described the 7th operational amplifier IC1C is connected with the output terminal of the 6th operational amplifier IC1B with the 5th operational amplifier IC1A, and output terminal is connected with negative input end by a resistance R 15, is connected with positive input terminal by a capacitor C 6; The positive input terminal of described the 8th operational amplifier IC1D is connected with the output terminal of the 7th operational amplifier, and output terminal is respectively by a resistance R 14, and R18 is connected with positive input terminal with negative input end.
Described coil acquisition module electricity router chip TLC0841 realizes.
As shown in Figure 3, workflow of the present invention is as follows: described discharge circuit comprises that two paths of signals processing is A-C, B-D signal.A, C signal is exported A-C signal again after amplifying separately; B, D signal is exported B-D signal again after amplifying separately; Last A-C signal and B-D signal are through amplifier output.Last again through the final simulating signal of level Four amplification output.Specific descriptions are:
Gather one group of coil as Fig. 2 D+, D-, B+.D+, through resistance R 5, connects capacitor C 3, and to 3 pin of TL084-2, between 1 pin of TL08-2 and 2 pin, through resistance R 28, R29 amplifies D+ signal; B+ is through resistance R 1, and adjustable resistance RV1 is to 9 pin of TL084-2, then has 10 pin and 8 pin feedback to superpose through resistance R 32 and D+ amplifying signal.Wherein the middle position adjustable of RV1 is connected with VCC through resistance R 6.D-signal meets VCC, after the signal of D+ and B+ amplifies, superposed signal is through 3 pin of TL084-1,2 pin of TL084-1 are through resistance R 12, R12 mono-termination VCC, resistance R 12 meets adjustable resistance RV3, a termination R13 of adjustable resistance RV3, R13 mono-termination VCC, the other end connecting resistance R7 of RV3, feeds back to 1 pin of TL084-1.
Another of collection coil organized as Fig. 2 A+, A-, C+.A+ signal through resistance R 43, connects 5 pin of C33 to TL084-2, wherein C33 mono-termination VCC, and 6 pin of TL084-2 meet R44, and R44 mono-termination VCC is connected to 7 pin of TL084-2 with R37; A-signal meets VCC, C+ signal is being connected with adjustable resistance RV2 through resistance R 41, the adjustable terminating resistor R42 of RV2 is connected with 5 pin of TL084-2, and the other end of RV2 connects 13 pin of TL084-2, and 12 pin of TL084-2 are received 14 pin of TL084-2 through capacitor C 39.
A+ signal and C+ signal arrive 5 pin of TL084-1 after TL0842 amplifies after R38 stack.The 6 pin process resistance R 11 of TL084-1 meet VCC, and 6 pin of TL084-1 are through 7 pin of resistance R 9 to TL084-1, then it is upper to be connected to adjustable resistance RV4 through resistance R 26, and RV4 is adjustable, and end connection R22 is connected with VCC.
The signal of above-mentioned generation connects through capacitor C 7, then is connected to 10 pin of TL084-1 through resistance R 21, and capacitor C 6 connects 8 pin of this signal to TL084-1.VCC is connected to 10 pin of TL084-1 through capacitor C 8.VCC is connected to 9 pin of TL084-1 through resistance R 20,9 pin of TL084-1 are by 8 pin of resistance R 15 to TL084-1.
9 pin of TL084-1 are connected to 12 pin of TL084-1,12 pin of TL084-1 are connected to 14 pin of TL084-1 through resistance R 18, VCC is connected to 12 pin of TL084-1 through resistance R 17,12 pin are connected to 13 pin of TL084-1 by capacitor C 9, VCC is connected to 13 pin through resistance R 19,13 pin are connected to 14 pin of TL084-1 through resistance R 14,14 pin are exported final feedback signal by resistance R 16.
4 pin of TL084-1 and TL084-2 meet POWER, and 11 pin meet GND.POWER and GND and pumping signal are all that outside digital display meter provides, and output to outside digital display meter through the feedback signal of R16 output.
Be not difficult to find, the present invention can move the magnetic field changing on ball bar ruler, and read head processing of circuit obtains phase shift signal, process again the TTL signal of final output difference through single-chip microcomputer, can be widely used in various lathes, and reach enough precision, debugging is simple.
Claims (4)
1. a testing circuit for displacement transducer, described displacement transducer comprises collection coil, also comprises: discharge circuit, outputting analog signal; Pumping signal produces circuit, and for generation of pumping signal, described pumping signal is carried in the two ends of described collection coil; Phase-shift circuit, carries out phase shifts for the signal that collection coil is produced by pumping signal; Power module is used to each circuit supply.
2. the testing circuit of displacement transducer according to claim 1, is characterized in that, described external pumping signal is carried in coil two ends, coil acquisition module processing of circuit tickler signal.
3. the testing circuit of displacement transducer according to claim 1, it is characterized in that, described coil at least comprises the first collection coil, second gathers coil, the 3rd gathers coil, the 4th gathers coil, and wherein the first collection coil is connected with the second collection coil, and the 3rd collection coil and the 4th gathers coil and is connected.
4. the testing circuit of displacement transducer according to claim 1 and 2, it is characterized in that, described phase-shift circuit comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier, the 5th operational amplifier, the 6th operational amplifier, the 7th operational amplifier, the 8th calculates amplifier; The input end of described the first operational amplifier is connected with the output terminal of the first collection coil, between negative input end and output terminal, is connected by a resistance; The negative input end of described the second operational amplifier is connected with the second collection coil output, between positive input terminal and output terminal, is connected by an electric capacity; The input end of described the 3rd operational amplifier is connected with the 3rd output terminal that gathers coil, between negative input end and output terminal, is connected by a resistance; The negative input end of described four-operational amplifier and the 4th gathers coil output and is connected, and between positive input terminal and output terminal, is connected by an electric capacity; The positive input terminal of described the 5th operational amplifier is connected by a resistance respectively with the output terminal of the first operational amplifier and the second operational amplifier, between negative input end and output terminal, is connected by a resistance; The positive input terminal of described the 6th operational amplifier is connected by a resistance respectively with the output terminal of the 3rd operational amplifier and four-operational amplifier, and negative input end is connected by a resistance with output terminal; The positive input terminal of described the 7th operational amplifier is connected with the output terminal of the 6th operational amplifier with the 5th operational amplifier, and output terminal is connected with negative input end by a resistance, is connected with positive input terminal by an electric capacity; The positive input terminal of described the 8th operational amplifier is connected with the output terminal of the 7th operational amplifier, and output terminal is connected with positive input terminal with negative input end by a resistance respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310226515.9A CN104180749B (en) | 2013-05-28 | 2013-05-28 | A kind of testing circuit of displacement transducer |
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| CN201310226515.9A CN104180749B (en) | 2013-05-28 | 2013-05-28 | A kind of testing circuit of displacement transducer |
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| CN104180749A true CN104180749A (en) | 2014-12-03 |
| CN104180749B CN104180749B (en) | 2016-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180748A (en) * | 2013-05-28 | 2014-12-03 | 上海雷尼威尔技术有限公司 | Detecting circuit of displacement sensor |
| CN106556334A (en) * | 2015-09-29 | 2017-04-05 | 中国飞机强度研究所 | Portable electric flow pattern displacement transducer detection means |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629113A (en) * | 1979-08-20 | 1981-03-23 | Matsushita Electric Ind Co Ltd | Displacement transducer |
| RU2163350C2 (en) * | 1999-01-21 | 2001-02-20 | Научно-производственное объединение измерительной техники | Meter of linear displacement |
| CN201397122Y (en) * | 2008-03-03 | 2010-02-03 | 镇江恒驰科技有限公司 | Linear displacement difference transformer signal modulate circuit |
| CN101726238A (en) * | 2009-12-10 | 2010-06-09 | 西安理工大学 | Differential pulse eddy current displacement detector and detecting method thereof |
| CN101769709A (en) * | 2009-12-30 | 2010-07-07 | 国电南京自动化股份有限公司 | Analog circuit and method for detecting wire breaking of displacement sensor LVDT |
| CN202903121U (en) * | 2012-09-03 | 2013-04-24 | 上海球栅测量系统有限公司 | Detection circuit of displacement sensor |
| CN202903119U (en) * | 2012-09-03 | 2013-04-24 | 上海球栅测量系统有限公司 | Detection circuit for displacement sensor |
| CN203323692U (en) * | 2013-05-28 | 2013-12-04 | 上海雷尼威尔技术有限公司 | Detection circuit of displacement sensor |
| CN104180748A (en) * | 2013-05-28 | 2014-12-03 | 上海雷尼威尔技术有限公司 | Detecting circuit of displacement sensor |
-
2013
- 2013-05-28 CN CN201310226515.9A patent/CN104180749B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629113A (en) * | 1979-08-20 | 1981-03-23 | Matsushita Electric Ind Co Ltd | Displacement transducer |
| RU2163350C2 (en) * | 1999-01-21 | 2001-02-20 | Научно-производственное объединение измерительной техники | Meter of linear displacement |
| CN201397122Y (en) * | 2008-03-03 | 2010-02-03 | 镇江恒驰科技有限公司 | Linear displacement difference transformer signal modulate circuit |
| CN101726238A (en) * | 2009-12-10 | 2010-06-09 | 西安理工大学 | Differential pulse eddy current displacement detector and detecting method thereof |
| CN101769709A (en) * | 2009-12-30 | 2010-07-07 | 国电南京自动化股份有限公司 | Analog circuit and method for detecting wire breaking of displacement sensor LVDT |
| CN202903121U (en) * | 2012-09-03 | 2013-04-24 | 上海球栅测量系统有限公司 | Detection circuit of displacement sensor |
| CN202903119U (en) * | 2012-09-03 | 2013-04-24 | 上海球栅测量系统有限公司 | Detection circuit for displacement sensor |
| CN203323692U (en) * | 2013-05-28 | 2013-12-04 | 上海雷尼威尔技术有限公司 | Detection circuit of displacement sensor |
| CN104180748A (en) * | 2013-05-28 | 2014-12-03 | 上海雷尼威尔技术有限公司 | Detecting circuit of displacement sensor |
Non-Patent Citations (1)
| Title |
|---|
| 彭文中: "差动电容式位移传感器的仿真研究", 《传感器世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180748A (en) * | 2013-05-28 | 2014-12-03 | 上海雷尼威尔技术有限公司 | Detecting circuit of displacement sensor |
| CN106556334A (en) * | 2015-09-29 | 2017-04-05 | 中国飞机强度研究所 | Portable electric flow pattern displacement transducer detection means |
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| CN104180749B (en) | 2016-12-28 |
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