CN101706290A - Circuit for detecting angular displacement of rotating part - Google Patents
Circuit for detecting angular displacement of rotating part Download PDFInfo
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- CN101706290A CN101706290A CN200910309897A CN200910309897A CN101706290A CN 101706290 A CN101706290 A CN 101706290A CN 200910309897 A CN200910309897 A CN 200910309897A CN 200910309897 A CN200910309897 A CN 200910309897A CN 101706290 A CN101706290 A CN 101706290A
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Abstract
The invention discloses a circuit for detecting angular displacement of a rotating part, belonging to the technical field of electric power and electronics. The circuit comprises an angular displacement detection circuit and an amplification filter circuit, wherein the angular displacement detection circuit comprises a circuit board, a round tin foil, an angular displacement sensor and a magnetic cylinder; the amplification filter circuit comprises a differential amplification circuit and a lowpass filter circuit; the angular displacement shift of the rotating part causes the magnetic cylinder to do circular motion; the angular displacement sensor transmits a weak electric signal of mV grade obtained by electromagnetic induction to the differential amplification circuit; the differential amplification circuit amplifies the weak electric signal and transmits the amplified weak electric signal to the lowpass filter circuit; the lowpass filter circuit carries out wave filtering and subsequently outputs a strong electric signal of 0-5V; the strong electric signal is in direct proportion to the angular displacement of the rotating part; and the angular displacement of the rotating part can be obtained by measuring the strong electric signal. Based on the angular displacement sensor with a single chip, the angular displacement detection of the rotating part is realized, and the circuit has simple structure, low cost and easy implementation.
Description
Technical field
What the present invention relates to is a kind of circuit of electric and electronic technical field, specifically is a kind of circuit for detecting angular displacement of rotating part.
Background technology
Need the occasion of detection angular displacement of rotating part very many, for example chemical fibre filament winding machine Tension Control and Torque Control.In these are used, the mV level signal of angle displacement need be converted to the linear voltage of V level, need to be provided with circuit for detecting angular displacement of rotating part and signal amplification circuit filter for this reason.
Through existing literature search is found, remove and keep the golden article that is entitled as " reset circuit that improves the Angular Displacement Detecting precision " of on " scientific and technological information " 18 phases in 2006, having delivered, this article emphasis has been described the principle and the Design of Mechanical Structure of angular displacement sensor itself, provide a kind of reset circuit to improve the Angular Displacement Detecting precision, but the poor reliability of this technology for detection, sensitivity is low, the circuit structure complexity, the cost height, debugging and the difficulty that realizes are big.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of circuit for detecting angular displacement of rotating part is provided.The present invention has realized the highly reliable and highly sensitive detection to position of rotation by adopting suitable differential amplifier circuit and the filtering circuit of high sensitivity angular detection chip configuration.
The present invention is achieved by the following technical solutions:
The present invention includes: position, angle testing circuit and amplification filtering circuit, wherein: position, the angle testing circuit transmission differential voltage signal that links to each other with the amplification filtering circuit.
Position, described angle testing circuit comprises: circuit board, circular tinfoil paper, angle displacement sensor and magnetic post, wherein: circular tinfoil paper is attached to a side of circuit board, circular tinfoil paper and magnetic post are positioned at homonymy, between circular tinfoil paper and the magnetic post spacing is arranged, angle displacement sensor is positioned at the opposite side of circuit board, the center of circular tinfoil paper is relative with the center of angle displacement sensor, and the output negative pole of angle displacement sensor links to each other with the amplification filtering circuit respectively with output cathode.
Spacing between described circular tinfoil paper and the magnetic post is 5mm.
Described amplification filtering circuit comprises: differential amplifier circuit and low-pass filter circuit, wherein: the differential amplifier circuit transmission voltage information that links to each other with low-pass filter circuit.
Described differential amplifier circuit comprises: three operational amplifiers and ten resistance, wherein: the reverse input end of first operational amplifier, one end of first resistance links to each other respectively in twos with an end of second resistance, the positive input of first operational amplifier links to each other with the output negative pole of angle displacement sensor, the output terminal of first operational amplifier, one end of the other end of second resistance and the 3rd resistance links to each other respectively in twos, the reverse input end of second operational amplifier, one end of the other end of first resistance and the 4th resistance links to each other respectively in twos, the positive input of second operational amplifier links to each other with the output cathode of angle displacement sensor, the output terminal of second operational amplifier, one end of the other end of the 4th resistance and the 5th resistance links to each other respectively in twos, the reverse input end of the 3rd operational amplifier, one end of the other end of the 3rd resistance and the 9th resistance links to each other respectively in twos, the positive input of the 3rd operational amplifier, one end of the other end of the 5th resistance and the 6th resistance links to each other respectively in twos, the output terminal of the 3rd operational amplifier, the other end of the 9th resistance, one end of the tenth resistance links to each other respectively in twos with low-pass filter circuit, the other end ground connection of the tenth resistance, the other end of the 6th resistance, one end of the 7th resistance links to each other respectively in twos with an end of the 8th resistance, another termination+5V power supply of the 7th resistance, the other end ground connection of the 8th resistance.
Described low-pass filter circuit comprises: an operational amplifier, seven resistance, five electric capacity and a voltage stabilizing diode, wherein: an end of the tenth resistance, one end of first electric capacity links to each other respectively in twos with differential amplifier circuit, the other end of the 11 resistance, one end of second electric capacity and an end of the 16 resistance link to each other respectively in twos, the other end of second electric capacity, one end of the 3rd electric capacity, one end of the 12 resistance, one end of the 13 resistance and an end of the 14 resistance link to each other respectively in twos, the other end of first electric capacity, one end of the 4th electric capacity and the other end of the 12 resistance link to each other respectively in twos, the reverse input end of four-operational amplifier, the output terminal of four-operational amplifier, the other end of the 14 resistance, one end of the 15 resistance and an end of the 17 resistance link to each other respectively in twos, the positive input of four-operational amplifier, the 16 resistance the other end and the other end of the 4th electric capacity link to each other in twos respectively, the other end of the 17 resistance, one end of the 5th electric capacity and the negative electrode of voltage stabilizing diode link to each other the other end of the 5th electric capacity respectively in twos, the anode of voltage stabilizing diode, the other end of the 3rd electric capacity, the equal ground connection of the other end of the other end of the 13 resistance and the 15 resistance.
The present invention based on the single-chip angle displacement sensor, has realized the displacement detecting of rotary part angle according to electromagnetic induction principle, differential amplification and filtering principle, the good reliability of detection, and highly sensitive, circuit structure is simple, and cost is low, is easy to debugging and realization.
Description of drawings
Fig. 1 is the composition connection diagram of embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: position, angle testing circuit 1 and amplification filtering circuit 2, wherein: position, the angle testing circuit 1 transmission differential voltage signal that links to each other with amplification filtering circuit 2.
Position, described angle testing circuit 1 comprises: circuit board, circular tinfoil paper Tin1, angle displacement sensor U5 and magnetic post M1, wherein: circular tinfoil paper Tin1 is attached to a side of circuit board, circular tinfoil paper Tin1 and magnetic post M1 are positioned at homonymy, between circular tinfoil paper Tin1 and the magnetic post M1 5mm spacing is arranged, angle displacement sensor U5 is positioned at the opposite side of circuit board, the center of circular tinfoil paper Tin1 is relative with the center of angle displacement sensor U5, and the output negative pole OUT-of angle displacement sensor U5 links to each other with amplification filtering circuit 2 respectively with output cathode OUT+.
Described amplification filtering circuit 2 comprises: differential amplifier circuit and low-pass filter circuit, and wherein: differential amplifier circuit comprises: three operational amplifiers and ten resistance; Low-pass filter circuit comprises: an operational amplifier, seven resistance, five electric capacity and a voltage stabilizing diode.
The reverse input end of the first operational amplifier U1, one end of one end of first resistance R 1 and second resistance R 2 links to each other respectively in twos, the positive input of the first operational amplifier U1 links to each other with the output negative pole OUT of angle displacement sensor U5, the output terminal of the first operational amplifier U1, one end of the other end of second resistance R 2 and the 3rd resistance R 3 links to each other respectively in twos, the reverse input end of the second operational amplifier U2, one end of the other end of first resistance R 1 and the 4th resistance R 4 links to each other respectively in twos, the positive input of the second operational amplifier U2 links to each other with the output cathode OUT+ of angle displacement sensor U5, the output terminal of the second operational amplifier U2, one end of the other end of the 4th resistance R 4 and the 5th resistance R 5 links to each other respectively in twos, the reverse input end of the 3rd operational amplifier U3, one end of the other end of the 3rd resistance R 3 and the 9th resistance R 9 links to each other respectively in twos, the positive input of the 3rd operational amplifier U3, one end of the other end of the 5th resistance R 5 and the 6th resistance R 6 links to each other respectively in twos, the output terminal of the 3rd operational amplifier U3, the other end of the 9th resistance R 9, one end of the tenth resistance R 10, one end of one end of the 11 resistance R 11 and first capacitor C 1 links to each other respectively in twos, the other end ground connection of the tenth resistance R 10, the other end of the 6th resistance R 6, one end of one end of the 7th resistance R 7 and the 8th resistance R 8 links to each other respectively in twos, another termination+5V power supply of the 7th resistance R 7, the other end ground connection of the 8th resistance R 8, the other end of the 11 resistance R 11, one end of second capacitor C 2 links to each other respectively in twos with an end of the 16 resistance R 16, the other end of second capacitor C 2, one end of the 3rd capacitor C 3, one end of the 12 resistance R 12, one end of the 13 resistance R 13 links to each other respectively in twos with an end of the 14 resistance R 14, the other end of first capacitor C 1, one end of the 4th capacitor C 4 links to each other respectively in twos with the other end of the 12 resistance R 12, the reverse input end of four-operational amplifier U4, the output terminal of four-operational amplifier U4, the other end of the 14 resistance R 14, one end of the 15 resistance R 15 links to each other respectively in twos with an end of the 17 resistance R 17, the positive input of four-operational amplifier U4, the 16 resistance R 16 the other end and the other end of the 4th capacitor C 4 link to each other in twos respectively, the other end of the 17 resistance R 17, one end of the 5th capacitor C 5 links to each other the other end of the 5th capacitor C 5 respectively in twos with the negative electrode of voltage stabilizing diode ZD1, the anode of voltage stabilizing diode ZD1, the other end of the 3rd capacitor C 3, the equal ground connection of the other end of the other end of the 13 resistance R 13 and the 15 resistance R 15.
Parameter in the present embodiment is specially: the radius of circular tinfoil paper Tin1 is 35mm; Magnetic post M1 is that diameter is the column magnetic steel column of 7.5mm; Angle displacement sensor U5 is linear reluctance Angular Displacement Detecting chip HMC1501; The first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 and four-operational amplifier U4 are the full amplitude operational amplifier LMV324 by the power supply of+5V power supply; The resistance of first resistance R 1 is 0.5kW; The resistance of second resistance R 2 is 4.7kW; The resistance of the 3rd resistance R 3 is 110kW; The resistance of the 4th resistance R 4 is 4.4kW; The resistance of the 5th resistance R 5 is 110kW; The resistance of the 6th resistance R 6 is 110kW; The resistance of the 7th resistance R 7 is 2.2kW; The resistance of the 8th resistance R 8 is 2.2kW; The resistance of the 9th resistance R 9 is 110kW; The resistance of the tenth resistance R 10 is 2.2kW; The resistance of the 11 resistance R 11 is 30kW; The resistance of the 12 resistance R 12 is 15kW; The resistance of the 13 resistance R 13 is 1kW; The resistance of the 14 resistance R 14 is 330W; The resistance of the 15 resistance R 15 is 2.2kW; The resistance of the 16 resistance R 16 is 30kW; The resistance of the 17 resistance R 17 is 2.2kW; The electric capacity of first capacitor C 1 is 100nF; The electric capacity of second capacitor C 2 is 220nF; The electric capacity of the 3rd capacitor C 3 is 18nF; The electric capacity of the 4th capacitor C 4 is 100nF; The electric capacity of the 5th capacitor C 5 is 3.3nF; Voltage stabilizing diode ZD1 moves when+5.1V.
Position, angle testing circuit 1 and amplification filtering circuit 2 close fit in the present embodiment, the angle displacement of rotary part is converted to the forceful electric power voltage signal of 0V～5V: the angle displacement conversion of rotary part causes that magnetic post M1 makes circular motion, angle displacement sensor U5 will pass to differential amplifier circuit by other weak electric signal of mV level that electromagnetic induction obtains, differential amplifier circuit is passed to low-pass filter circuit after this weak electric signal is amplified 100 times, low-pass filter circuit filtering is after output terminal U0 will export the forceful electric power signal of 0-5V, this forceful electric power signal is directly proportional with the angle displacement of rotary part, can learn that by the size of measuring this forceful electric power signal the angle displacement size of rotary part, this forceful electric power signal can flow to a back level controller and carry out closed-loop control.
Present embodiment based on the single-chip angle displacement sensor, has been realized the displacement detecting of rotary part angle according to electromagnetic induction principle, differential amplification and filtering principle, the good reliability of detection, and highly sensitive, circuit structure is simple, and cost is low, is easy to debugging and realization.
Claims (4)
1. a circuit for detecting angular displacement of rotating part is characterized in that, comprising: position, angle testing circuit and amplification filtering circuit, wherein: position, the angle testing circuit transmission differential voltage signal that links to each other with the amplification filtering circuit;
Position, described angle testing circuit comprises: circuit board, circular tinfoil paper (Tin1), angle displacement sensor (U5) and magnetic post (M1), wherein: circular tin (Tin1) paper tinsel is attached to a side of circuit board, circular tinfoil paper (Tin1) is positioned at homonymy with magnetic post (M1), between circular tinfoil paper (Tin1) and the magnetic post (M1) spacing is arranged, angle displacement sensor (U5) is positioned at the opposite side of circuit board, the center of circular tinfoil paper (Tin1) is relative with the center of angle displacement sensor (U5), and the output negative pole of angle displacement sensor (U5) links to each other with the amplification filtering circuit respectively with output cathode;
Described amplification filtering circuit comprises: differential amplifier circuit and low-pass filter circuit, wherein: the differential amplifier circuit transmission voltage information that links to each other with low-pass filter circuit, the differential amplifier circuit transmission differential voltage signal that links to each other with position, angle testing circuit.
2. circuit for detecting angular displacement of rotating part according to claim 1 is characterized in that, the spacing between described circular tinfoil paper (Tin1) and the magnetic post (M1) is 5mm.
3. circuit for detecting angular displacement of rotating part according to claim 1, it is characterized in that, described differential amplifier circuit comprises: three operational amplifiers and ten resistance, wherein: the reverse input end of first operational amplifier (U1), one end of one end of first resistance (R1) and second resistance (R2) links to each other respectively in twos, the positive input of first operational amplifier (U1) links to each other with the output negative pole of angle displacement sensor (U5), the output terminal of first operational amplifier (U1), one end of the other end of second resistance (R2) and the 3rd resistance (R3) links to each other respectively in twos, the reverse input end of second operational amplifier (U2), one end of the other end of first resistance (R1) and the 4th resistance (R4) links to each other respectively in twos, the positive input of second operational amplifier (U2) links to each other with the output cathode of angle displacement sensor (U5), the output terminal of second operational amplifier (U2), one end of the other end of the 4th resistance (R4) and the 5th resistance (R5) links to each other respectively in twos, the reverse input end of the 3rd operational amplifier (U3), one end of the other end of the 3rd resistance (R3) and the 9th resistance (R9) links to each other respectively in twos, the positive input of the 3rd operational amplifier (U3), one end of the other end of the 5th resistance (R5) and the 6th resistance (R6) links to each other respectively in twos, the output terminal of the 3rd operational amplifier (U3), the other end of the 9th resistance (R9), one end of the tenth resistance (R10) links to each other respectively in twos with low-pass filter circuit, the other end ground connection of the tenth resistance (R10), the other end of the 6th resistance (R6), one end of one end of the 7th resistance (R7) and the 8th resistance (R8) links to each other respectively in twos, another termination voltage source of the 7th resistance (R7), the other end ground connection of the 8th resistance (R8).
4. circuit for detecting angular displacement of rotating part according to claim 1, it is characterized in that, described low-pass filter circuit comprises: an operational amplifier, seven resistance, five electric capacity and a voltage stabilizing diode (ZD1), wherein: an end of the tenth resistance (R10), one end of first electric capacity (C1) links to each other respectively in twos with differential amplifier circuit, the other end of the 11 resistance (R11), one end of second electric capacity (C2) links to each other respectively in twos with an end of the 16 resistance (R16), the other end of second electric capacity (C2), one end of the 3rd electric capacity (C3), one end of the 12 resistance (R12), one end of the 13 resistance (R13) links to each other respectively in twos with an end of the 14 resistance (R14), the other end of first electric capacity (C1), one end of the 4th electric capacity (C4) links to each other respectively in twos with the other end of the 12 resistance (R12), the reverse input end of four-operational amplifier (U4), the output terminal of four-operational amplifier (U4), the other end of the 14 resistance (R14), one end of the 15 resistance (R15) links to each other respectively in twos with an end of the 17 resistance (R17), the positive input of four-operational amplifier (U4), the 16 resistance (R16) the other end and the other end of the 4th electric capacity (C4) link to each other in twos respectively, the other end of the 17 resistance (R17), the negative electrode of one end of the 5th electric capacity (C5) and voltage stabilizing diode (ZD1) links to each other the other end of the 5th electric capacity (C5) respectively in twos, the anode of voltage stabilizing diode (ZD1), the other end of the 3rd electric capacity (C3), the other end of the 13 resistance (R13) and the equal ground connection of the other end of the 15 resistance (R15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103098975A CN101706290B (en) | 2009-11-18 | 2009-11-18 | Circuit for detecting angular displacement of rotating part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103098975A CN101706290B (en) | 2009-11-18 | 2009-11-18 | Circuit for detecting angular displacement of rotating part |
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| CN101706290A true CN101706290A (en) | 2010-05-12 |
| CN101706290B CN101706290B (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009103098975A Expired - Fee Related CN101706290B (en) | 2009-11-18 | 2009-11-18 | Circuit for detecting angular displacement of rotating part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503282A (en) * | 2020-11-28 | 2021-03-16 | 贵州航天特种车有限责任公司 | Current collecting device integrating angle sensing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6969988B2 (en) * | 2002-03-22 | 2005-11-29 | Asahi Kasei Emd Corporation | Angle determining apparatus and angle determining system |
| JP4233958B2 (en) * | 2003-08-29 | 2009-03-04 | 株式会社日本自動車部品総合研究所 | Rotation angle detector |
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- 2009-11-18 CN CN2009103098975A patent/CN101706290B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503282A (en) * | 2020-11-28 | 2021-03-16 | 贵州航天特种车有限责任公司 | Current collecting device integrating angle sensing |
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Granted publication date: 20110622 Termination date: 20131118 |