CN101339690A - Non-contact rotary device photoelectric coupling transmission system and its rotary device - Google Patents
Non-contact rotary device photoelectric coupling transmission system and its rotary device Download PDFInfo
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- CN101339690A CN101339690A CNA2008100209878A CN200810020987A CN101339690A CN 101339690 A CN101339690 A CN 101339690A CN A2008100209878 A CNA2008100209878 A CN A2008100209878A CN 200810020987 A CN200810020987 A CN 200810020987A CN 101339690 A CN101339690 A CN 101339690A
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Abstract
The invention discloses a photoelectric coupling transmission system of a non-contact rotating device and a rotating device thereof, which belong to the signal transmission field of rotating machinery. The photoelectric coupling transmission system of the non-contact rotating device comprises the following steps: a multiplex signal collected by a signal collection unit is transmitted to a base side of the rotating device from a rotating side of the rotating device; when the machinery at the rotating side is needed to be controlled, a control signal is transmitted from the base side of the rotating device to the rotating side of the rotating device, therefore, bidirectional transmission of the multiplex signal is realized. A photoelectric coupling transmission channel is composed of a laser light-emitting diode with quick response speed and a PIN-typed photodiode in parallel connection. The laser light-emitting diode is controlled by a modulated multiplex sampling signal or a control signal, and the PIN-typed photodiode effectively receives the signal after receiving a receipt starting signal. By adopting the method to perform the bidirectional transmission of the multiplex signal, the photoelectric coupling transmission system of the non-contact rotating device provides a high and reliable broadband signal transmission platform for the measurement and control of the rotating machinery.
Description
Technical field
The present invention utilizes the photoelectricity coupling process to make between rotating machinery rotor and the stator can transmit the multichannel measurement and control signal by the while high-speed bidirectional, genus rotating machinery field of signal transmissions under the rotation status relatively.
Background technology
Rotating machinery is to use a class machinery very widely in every field.Because vibration can appear in the asymmetry of revolving part manufacture process during use.This not only can cause the system works instability, produces noise, also can aggravate its fatigue damage.Therefore, need monitor even control, suppress noise the situation (as stress, strain, vibration) of rotatable parts.Traditional rotary part signal transmission system is a kind of collector ring structure, its application can be related the 19th-century end, it relies on brush to contact with ring wall, from the becket that rotates to stationary ring transferring electric power electric current and data-signal, collector ring requires high to working environment, it is unreliable to work, and needs periodic maintenance to change, signal transmission when being unsuitable for high speed rotating, the passage expansion is also inconvenient.Common method for transmitting signals also has remote measurement, and the remote measuring and controlling mode then exists system complex, poor anti jamming capability, other electronic equipment produced the shortcoming of disturbing.Also favourable technology with electromagnetic coupled realization non contact signal transmission preferably resolve above problem, but the signal transfer bandwidth still is subjected to bigger restriction.The transmission of tradition rotating machinery signal exists a lot of not enough, can not satisfy the demand of modern system for the high data rate real-time Transmission.
Summary of the invention
At shortcomings such as traditional rotating machinery method for transmitting signals reliability highest frequency not high, transmission signals are restricted, the present invention utilizes photoelectricity coupling high frequency sound characteristic, be rotated between mechanical rotor and the stator bidirectional high speed transmission in the multichannel measurement and control signal under rotation status relatively, for the measurement and the control of rotating machinery provides highly reliable, broadband signal transmission platform.
What the present invention utilized multiple signals that a kind of electric light-opto-electronic conversion means collect whirligig rotation side or base side sends that control signal is carried out at a high speed, efficient, reliable transmission, thereby realizes the purpose to rotation side machinery monitoring and control.
Optical communication technique is a kind of signal transmission technology of maturation, and the carrier frequency of optical communication is 10
14Hz～10
15Between the Hz, it has very high message capacity.The modulation rate of semiconductor laser commonly used has very fast transmission speed between 155Mb/s～2.5Gb/s on the market at present, can satisfy the needs of real-time control.Light transmission be applied to the to be rotatably connected signal transmission system of parts, not only simplify the structure of system, but also solved the restriction of transmission speed, frequency band, its antijamming capability also is greatly improved simultaneously.Based on above reason, select for use the photoelectricity coupling channel that the whirligig signal is transmitted in the present invention.
The present invention utilizes piezoelectric sensor and sample circuit that rotation side mechanical signal is sampled, then the multiple signals that collect are passed through modulation and multiplexing technique, becoming the digital signal that is suitable for the single channel transmission transmits, multiple signals can reach the base side of whirligig from the rotation side of whirligig like this, when needs are controlled rotation side machinery, control signal also can reach the rotation side of whirligig from the base side of whirligig, has so just realized the transmitted in both directions of multiple signals.The photoelectricity transmission coupling channel is to be made of very fast lasing fluorescence diode of response speed (LD light emitting diode) and the light receiving element PIN type photodiode that is connected in parallel.The LD light emitting diode is by multi-channel sampling signal that modulates or control signal control, and reception diode effectively receives signal after receiving the reception commencing signal, and the present invention utilizes exactly with upper type multiple signals are carried out transmitted in both directions.
A kind of noncontact whirligig photoelectric coupling transmission system of the present invention comprises signal gathering unit, control drive unit, signal transmission unit, data processing unit, electromagnetic coupler, signal gathering unit wherein, control drive unit is positioned on the rotation side of whirligig, and data processing unit is positioned on the base side of whirligig; The first input end of the output termination signal transmission unit of signal gathering unit, the input end of the first output termination data processing unit of signal transmission unit, the signal that signal gathering unit collects is transferred to data processing unit through signal transmission unit, thereby the duty of whirligig rotation side is monitored; Second input end of the output termination signal transmission unit of data processing unit, the input end of the second output termination control drive unit of signal transmission unit, the control signal that data processing unit produces is transferred to control drive unit through signal transmission unit, thus the final control that realizes whirligig rotation side; The former limit of electromagnetic coupler and the secondary of electromagnetic coupler are coupled, for signal gathering unit and control drive unit provide power supply, wherein the secondary of electromagnetic coupler is positioned on the rotation side of whirligig, and the former limit of electromagnetic coupler is positioned on the base side of whirligig; Described signal gathering unit comprises piezoelectric sensor, signal amplifier, signal gathering unit multidiameter option switch, analog to digital converter, signal gathering unit scrambler and multiplexer; The input end of the output termination signal amplifier of piezoelectric sensor, signal amplifier amplifies the sampled signal of piezoelectric sensor output, the output termination signal gathering unit multidiameter option switch of signal amplifier, the signal gathering unit multidiameter option switch is selected the output signal of signal amplifier, the output termination analog to digital converter of signal gathering unit multidiameter option switch, analog to digital converter is a digital signal with the analog signal conversion of input, the output termination signal gathering unit scrambler and the multiplexer of analog to digital converter, signal gathering unit scrambler and multiplexer are encoded to signal and are multiplexing, for use in serial transmission, the output terminal of signal gathering unit scrambler and multiplexer is the output terminal of signal gathering unit; Described data processing unit comprises scrambler and multiplexer, demoder and shunt, microcomputer, data processing unit is handled the signal that receives, thereby the whirligig duty to rotating machinery is monitored, and analyzes and calculate control signal; Described control drive unit comprises control drive unit demoder and shunt, digital to analog converter, control drive unit multidiameter option switch, power amplifier, driver; The input end of control drive unit demoder and shunt is the input end of control drive unit, the input end of the output termination digital to analog converter of control drive unit demoder and shunt, digital to analog converter is converted to simulating signal with the digital signal of input, the output termination control drive unit multidiameter option switch of digital to analog converter, the control drive unit multidiameter option switch is selected the signal of input, judgement to which driving element enables to drive, the output termination power amplifier of control drive unit multidiameter option switch, power amplifier is transferred to driver after signal is amplified, thus Control Driver work; Described signal transmission unit comprises first optical transmitting set, first optical receiver, second optical transmitting set, second optical receiver, the input end of first optical transmitting set is the first input end of signal transmission unit, the output terminal of first optical receiver is first output terminal of signal transmission unit, and the input end of second optical transmitting set is second input end of signal transmission unit, and the output terminal of second optical receiver is second output terminal of signal transmission unit; The output terminal of the input termination signal gathering unit of first optical transmitting set, first optical transmitting set receives behind the signal of signal gathering unit luminous, the electric signal of signal gathering unit output is converted into light signal, the light that first optical transmitting set sends is received by first optical receiver, the input end of the output termination data processing unit of first optical receiver, pass to data processing unit after the light signal that receives is converted into electric signal, thereby realize transmission acquired signal; The input end of output termination second optical transmitting set of data processing unit, second optical transmitting set receives after the control signal of data processing unit output luminous, the electric signal of data processing unit output is converted into light signal, the light that second optical transmitting set sends is received by second optical receiver, the input end of the output termination control drive unit of second optical receiver, pass to control drive unit after the light signal that receives is converted into electric signal, thereby realize the transmission of control signal.
The whirligig of noncontact whirligig photoelectric coupling transmission system of the present invention comprises holder, and the magnetic jar is right, shell, turning axle; Shell is installed on the holder, turning axle links together the rotation side and the base side of noncontact whirligig photoelectric coupling transmission system, the right inboard of magnetic jar is to being fixed on the turning axle, the right outside of magnetic jar is to being fixed on the shell, it is internal that electromagnetic coupler is arranged on the magnetic jar, wherein the electromagnetic coupler secondary is positioned at the right inboard of magnetic jar internally, it is internal that the former limit of electromagnetic coupler is positioned at the right outside of magnetic jar, the shell internal fixation has the pedestal fixed support, second optical transmitting set and first optical receiver are set on the pedestal fixed support, be fixed with rotary fixed bracket on the turning axle, first optical transmitting set and second optical receiver are set on the rotary fixed bracket.First optical receiver and second optical receiver are respectively the ring-type photelectric receiver that PIN type photodiode is formed, and the PIN photodiode on each photelectric receiver is parallel with one another.First optical transmitting set is that two LD lasing fluorescence diodes compose in parallel, and two LD lasing fluorescence diode symmetries are distributed on the whirligig rotary fixed bracket.Second optical transmitting set is that two LD lasing fluorescence diodes compose in parallel, and two LD lasing fluorescence diode symmetries are distributed on the whirligig pedestal fixed support.
Noncontact whirligig photoelectric coupling transmission system and whirligig thereof, can realize signal stabilization, transmission accurately and rapidly, promoting it develops to low cost, high-level efficiency, low-loss direction, can not only promote the quick progress of information tranmission techniques, also promote in its application being significant in other more areas.The present invention can be used for the measurement and the control of rotary system, as torque measurement, temperature of rotor pressure and kinetic measurement, rotating machinery vibrating control, and the health monitoring of rotating machinery.
Description of drawings
Fig. 1 is the photoelectric coupling transmission system structural drawing
Fig. 2 is the opto-electrical transmitting device synoptic diagram
Fig. 3 (a) is a LD lasing fluorescence diode synoptic diagram
Fig. 3 (b) is the photelectric receiver floor map
Fig. 4 is the LD LED driving circuit
Fig. 5 is a light receiving amplification circuit
Label title in the accompanying drawing: A. signal gathering unit, B. control drive unit, C. signal transmission unit, D. data processing unit, E. electromagnetic coupler, 1. piezoelectric sensor, 2. driver, 3. signal amplifier, 4. power amplifier, 5. signal gathering unit multidiameter option switch, 6. control drive unit multidiameter option switch, 7. analog to digital converter, 8. digital to analog converter, 9. signal gathering unit scrambler and multiplexer, 10. control drive unit demoder and shunt, 11. the electromagnetic coupler secondary, 12. first optical transmitting sets (comprising LD light emitting diode and LD LED driving circuit), 13. second optical receivers (comprising PIN photodiode group and light receiving amplification circuit), 14. the former limit of electromagnetic coupler, 15. first optical receiver (comprising PIN photodiode group and light receiving amplification circuit), 16. second optical transmitting sets (comprising LD light emitting diode and LD LED driving circuit), 17. turning axles, 18. whirligig rotary fixed bracket, 19. whirligig pedestal fixed support, 20. lead-in wire grooves, 21. shells, 22. the magnetic jar is right, 23. holder, 24.LD lasing fluorescence diode, 25.PIN photodiode, R1. first resistance, R2. slide rheostat, R3. second resistance, Rf. the 3rd resistance, Dz. voltage stabilizing diode, UA. operational amplifier, V1+. operational amplifier UA power supply positive input terminal, V1-. operational amplifier UA power-input end, LD1. a LD Laser emission diode, LD2. the 2nd LD Laser emission diode, IN.LD LED driving circuit input end, I
LD.LD Laser emission diode drive current, PIN1. first photodiode, PINn. n photodiode (n is the integer greater than 1), C1. first electric capacity, C2. second electric capacity, C3. the 3rd electric capacity, R4. the 4th resistance, R5. the 5th resistance, R6. the 6th resistance, R7. the 7th resistance, R8. the 8th resistance, R9. the 9th resistance, R10. the tenth resistance, U1A. first operational amplifier, U2A. second operational amplifier, U3A. the 3rd operational amplifier, three operational amplifier U1A of V2+., U2A, U3A power supply positive input terminal, V2-. three operational amplifier U1A, U2A, U3A power-input end, V (-).The second operational amplifier U2A is input end in the same way, V (+). and the 3rd operational amplifier U3A is input end in the same way, the Vr. second operational amplifier U2A reverse input end, OUT. light receiving amplification circuit output terminal.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 is the photoelectric coupling transmission system structural drawing; Noncontact whirligig photoelectric coupling transmission system of the present invention, comprise signal gathering unit A, control drive unit B, signal transmission unit C, data processing unit D, electromagnetic coupler E, wherein signal gathering unit A, control drive unit B are positioned on the rotation side of whirligig, and data processing unit D is positioned on the base side of whirligig; The first input end a of the output termination signal transmission unit C of signal gathering unit A, the first output terminal b of signal transmission unit C connects the input end of data processing unit D, the signal that signal gathering unit A collects is transferred to data processing unit D through signal transmission unit C, thereby the duty of whirligig rotation side is monitored; The second input end d of the output termination signal transmission unit C of data processing unit D, the second output terminal c of signal transmission unit C connects the input end of control drive unit B, the control signal that data processing unit D produces is transferred to control drive unit B through signal transmission unit C, thus the final control that realizes whirligig rotation side; The former limit 14 of electromagnetic coupler and the secondary 11 of electromagnetic coupler are coupled, for signal gathering unit and control drive unit provide power supply, wherein the secondary 11 of electromagnetic coupler is positioned on the rotation side of whirligig, and the former limit 14 of electromagnetic coupler is positioned on the base side of whirligig; Described signal gathering unit A comprises piezoelectric sensor 1, signal amplifier 3, signal gathering unit multidiameter option switch 5, analog to digital converter 7, signal gathering unit scrambler and multiplexer 9; The input end of the output termination signal amplifier 3 of piezoelectric sensor 1, signal amplifier 3 amplifies the sampled signal of piezoelectric sensor output, the output termination signal gathering unit multidiameter option switch 5 of signal amplifier 3, signal gathering unit multidiameter option switch 5 is selected the output signal of signal amplifier, the output termination analog to digital converter 7 of signal gathering unit multidiameter option switch 5, analog to digital converter 7 is a digital signal with the analog signal conversion of input, the output termination signal gathering unit scrambler and the multiplexer 9 of analog to digital converter 7,9 pairs of signals of signal gathering unit scrambler and multiplexer are encoded and are multiplexing, for use in serial transmission, the output terminal of signal gathering unit scrambler and multiplexer 9 is the output terminal of signal gathering unit A; Described data processing unit D comprises scrambler and multiplexer, demoder and shunt, microcomputer, data processing unit D handles the signal that receives, thereby the whirligig duty to rotating machinery is monitored, and analyzes and calculate control signal; Described control drive unit B comprises control drive unit demoder and shunt 10, digital to analog converter 8, control drive unit multidiameter option switch 6, power amplifier 4, driver 2; The input end of control drive unit demoder and shunt 10 is the input end of control drive unit B, the input end of the output termination digital to analog converter 8 of control drive unit demoder and shunt 10, digital to analog converter 8 is converted to simulating signal with the digital signal of input, the output termination control drive unit multidiameter option switch 6 of digital to analog converter 8, the signal of 6 pairs of inputs of control drive unit multidiameter option switch is selected, judgement to which driving element enables to drive, the output termination power amplifier 4 of control drive unit multidiameter option switch 6, power amplifier 4 is transferred to driver 2 after signal is amplified, thus Control Driver work; Described signal transmission unit C comprises first optical transmitting set 12, first optical receiver 15, second optical transmitting set 16, second optical receiver 13, first optical transmitting set 12 wherein, second optical receiver 13 is positioned on the rotary fixed bracket 18 of whirligig, first optical receiver 15, second optical transmitting set 16 is positioned on the pedestal fixed support 19 of whirligig, the input end of first optical transmitting set 12 is the first input end a of signal transmission unit C, the output terminal of first optical receiver 15 is the first output terminal b of signal transmission unit C, the input end of second optical transmitting set 16 is the second input end d of signal transmission unit C, and the output terminal of second optical receiver 13 is the second output terminal c of signal transmission unit C; The output terminal of the input termination signal gathering unit A of first optical transmitting set 12, first optical transmitting set 12 receives behind the signal of signal gathering unit A luminous, the electric signal of signal gathering unit A output is converted into light signal, the light that first optical transmitting set 12 sends is received by first optical receiver 15, the input end of the output termination data processing unit D of first optical receiver 15, pass to data processing unit D after the light signal that receives is converted into electric signal, thereby realize transmission acquired signal; The input end of output termination second optical transmitting set 16 of data processing unit D, second optical transmitting set 16 receives after the control signal of data processing unit D output luminous, the electric signal of data processing unit D output is converted into light signal, the light that second optical transmitting set 16 sends is received by second optical receiver 13, the input end of the output termination control drive unit B of second optical receiver 13, pass to control drive unit B after the light signal that receives is converted into electric signal, thereby realize the transmission of control signal.
Fig. 2 is the opto-electrical transmitting device synoptic diagram, holder 23 fixing whole whirligigs, shell 21 is installed on the holder 23, pedestal fixed support 19 is arranged on shell 21 inboards, second optical transmitting set 16 and first optical receiver 15 are positioned on the pedestal fixed support 19, turning axle 17 links together the rotation side and the base side of noncontact whirligig photoelectric coupling transmission system, rotary fixed bracket 18 is arranged on the turning axle 17, first optical transmitting set 12 and second optical receiver 13 are positioned on the rotary fixed bracket 18, the magnetic jar to 22 inboard to being fixed on the turning axle 17, the magnetic jar to 22 the outside to being fixed on the shell 21, electromagnetic coupler E is arranged on the magnetic jar in 22, wherein electromagnetic coupler secondary 11 be positioned at the magnetic jar to 22 inboard internally, it is internal to 22 the outside that the former limit 14 of electromagnetic coupler is positioned at the magnetic jar, lead-in wire groove 20 is grooves for making things convenient for wire arrangements to open in turning axle 17, wherein signal gathering unit A arranged with what turning axle 17 rotated, control drive unit B, electromagnetic coupler secondary 11, first optical transmitting set 12, second optical receiver 13 does not have a former limit 14 of electromagnetic coupler with what turning axle rotated, first optical receiver 15, second optical transmitting set 16, data processing unit D.
System of the present invention utilization is positioned at the piezoelectric sensor of whirligig rotation side samples to the duty (as stress, strain, vibration) of rotation side, offsets vibration signal with the driver that is positioned at whirligig rotation side, and their effect is just in time opposite.The present invention selects for use piezoelectric ceramics as sensor and driver, because piezoelectric ceramics possesses positive inverse piezoelectric effect, plurality of advantages such as is easy in compound substance to arrange and compatibility is good.In whirligig, distributed piezoelectric sensor and piezoelectric actuator are sticked on the both side surface at same position, constitute modal sense/driver.Utilize this composition element, structural vibrations is realized coordination control, avoid control to overflow.
Because piezoelectric sensor can produce a certain amount of electric charge at element surface after the surface is stressed, because the quantity of electric charge is very little,, make it to be converted into voltage signal so need utilize signal amplifier that electric charge is amplified, offer subsequent conditioning circuit and handle.
The elimination of nuisance vibration realizes by piezoelectric actuator, when after applying certain voltage on two electrodes of piezoelectric actuator, because inverse piezoelectric effect, piezoelectric patches can produce deformation on certain orientation, experimental results show that under certain driving voltage to have the good linearity between deformation and the driving voltage.The voltage of controller output generally-10V～+ the 10V scope in, such voltage is difficult to make piezoelectric actuator to produce large-scale deformation, so need the high-voltage power amplifier that control signal is amplified, makes driver produce large-scale deformation and offsets vibration.The present invention adopts noncontact electromagnetic coupled coil to provide power supply to whirligig rotation side.
The signal gathering unit scrambler adopts pulse code modulation (PCM) (PCM, pulse code modulation) mode.In order on a physical channel, to carry out the transmission of multiple signals, adopt time-division multiplexing (TDM) (TDM, Time DivisionMultiplexing).The pcm encoder timesharing in certain sequence that is about to multiple signals transmits, and separates coded signal by same sequence again at receiving end, is combined into the original encoding sequence, deciphers at last, obtains multi-channel analog output.
The LD laser diode has high brightness, high output, and high response speed, high reliability, advantage such as the linearity is good, and volume is little, and is in light weight, and power consumption is low is suitable as the light-emitting component of photoelectricity coupling channel of the present invention.Fig. 3 (a) is a LD laser diode floor map, and the light emitted energy concentrates in 0 °～30 ° scopes, and the shell of emission ball is an organic glass, and the light that LD sends at a certain angle space multistory angle after organic glass refraction becomes the capable ejaculation of circular cone.For the reliability that guarantees to transmit, the present invention adopts two lasing fluorescence diodes mode of transmission signals simultaneously in parallel in optical transmitting set, and two LD laser two utmost points are launched light signal simultaneously when signal is imported.First optical transmitting set 12 is that two LD lasing fluorescence diodes compose in parallel, and two LD lasing fluorescence diode symmetries are distributed on the whirligig rotary fixed bracket 18.Second optical transmitting set 16 also is that two LD lasing fluorescence diodes compose in parallel, and two LD lasing fluorescence diode symmetries are distributed on the whirligig pedestal fixed support 19.Because the firing current of lasing fluorescence diode is bigger, so come the driving laser led lighting by driving circuit through the signal demand of pcm encoder.LD laser two utmost point driving circuits as shown in Figure 4, determining of load current is relevant with voltage stabilizing diode Dz, first resistance R 1, slide rheostat R2, the 3rd resistance R _ f, LD Laser emission diode drive current I
LDIrrelevant with the amplifier parameter, irrelevant with the parameter of the laser diode of output terminal, so make it to become constant current source, just can regulate the constant current size and regulate slide rheostat R2 simply.This is again a current parallel negative-feedback circuit simultaneously, so when first resistance R 1 changes, LD Laser emission diode drive current I
LDCan be from line stabilization.In addition, the 3rd resistance R _ f need be selected high-power resistance.
Optical receiver shown in Fig. 3 (b), the ring-type photelectric receiver that it is made up of PIN type photodiode.PIN type photoelectricity two dark currents are little, and response speed is fast, and is highly sensitive.Receiver is designed to ring-type can guarantee no matter still be the rotation occasion of low speed at a high speed, data can effectively be transmitted and receive, the rotating speed of data rate and revolving part has been realized the data high-speed transmission without any relation like this.First optical receiver 15 and second optical receiver 13 are respectively the ring-type photelectric receiver that PIN type photodiode is formed, PIN photodiode on each photelectric receiver is parallel with one another, as long as one of them photodiode receives signal and just thinks that signal is effective.Photodiode is subjected to the illumination meeting and produces photocurrent, and this electric current is very little, need be with its conversion and amplification.Its converter amplifier circuit as shown in Figure 5, when illumination is mapped on the photodiode, can produce photocurrent, earlier it is imported by the first operational amplifier U1A, first capacitor C 1, second capacitor C 2, the 4th resistance R 4, current-voltage (I-V) change-over circuit that the tenth resistance R 10 is formed is converted into voltage signal to current signal, because the amplitude of this signal is very little, so will be with this signal input by the second operational amplifier U2A, the 3rd operational amplifier U3A, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the double operational device amplifying circuit that the 3rd capacitor C 3 is formed amplifies, the differential input amplifying circuit of double operational is better than single amplifier pre-amplification circuit, and the expansion by to feedback resistance has reduced the thermonoise electric current that resistance brought.The double passage differential formula input that double operational device input amplifier adopts makes that the unstable error signal in the input signal balances out by difference, has strengthened the stability of system.Just can send into decoder decode through the signal after amplifying like this, the signal that decoding is good can be used for the working condition of rotating machinery is monitored, the signal that this signal will be handled after will handling is again uploaded through the photoelectricity coupling channel simultaneously, can realize the control to rotating machinery.
Claims (5)
1, a kind of noncontact whirligig photoelectric coupling transmission system, comprise signal gathering unit (A), control drive unit (B), signal transmission unit (C), data processing unit (D), electromagnetic coupler (E), wherein signal gathering unit (A), control drive unit (B) is positioned on the rotation side of whirligig, and data processing unit (D) is positioned on the base side of whirligig; The first input end (a) of the output termination signal transmission unit (C) of signal gathering unit (A), first output terminal (b) of signal transmission unit (C) connects the input end of data processing unit (D), second input end (d) of the output termination signal transmission unit (C) of data processing unit (D), second output terminal (c) of signal transmission unit (C) connects the input end of control drive unit (B); The former limit (14) of electromagnetic coupler and the secondary (11) of electromagnetic coupler are coupled, for signal gathering unit (A) and control drive unit (B) provide power supply, wherein the secondary of electromagnetic coupler (11) is positioned on the rotation side of whirligig, and the former limit (14) of electromagnetic coupler is positioned on the base side of whirligig; Described signal gathering unit (A) comprises piezoelectric sensor (1), signal amplifier (3), signal gathering unit multidiameter option switch (5), analog to digital converter (7), signal gathering unit scrambler and multiplexer (9); The input end of the output termination signal amplifier (3) of piezoelectric sensor (1), the output termination signal gathering unit multidiameter option switch (5) of signal amplifier (3), the output termination analog to digital converter (7) of signal gathering unit multidiameter option switch (5), the output termination signal gathering unit scrambler of analog to digital converter (7) and multiplexer (9), the output terminal of signal gathering unit scrambler and multiplexer (9) is the output terminal of signal gathering unit (A); Described data processing unit (D) comprises scrambler and multiplexer, demoder and shunt, microcomputer; Control drive unit (B) comprises control drive unit demoder and shunt (10), digital to analog converter (8), control drive unit multidiameter option switch (6), power amplifier (4), driver (2); The input end of control drive unit demoder and shunt (10) is the input end of control drive unit (B), the input end of the output termination digital to analog converter (8) of control drive unit demoder and shunt (10), the output termination control drive unit multidiameter option switch (6) of digital to analog converter (8), the output termination power amplifier (4) of control drive unit multidiameter option switch (6), the output terminal of power amplifier (4) driver connected (2); It is characterized in that, described signal transmission unit (C) comprises first optical transmitting set (12), first optical receiver (15), second optical transmitting set (16), second optical receiver (13), the input end of first optical transmitting set (12) is the first input end (a) of signal transmission unit (C), this input end (a) links to each other with the output terminal of signal gathering unit (A), the light that first optical transmitting set (12) sends is received by first optical receiver (15), the output terminal of first optical receiver (15) is first output terminal (b) of signal transmission unit (C), this output terminal (b) is connected with the input end of data processing unit (D), the input end of second optical transmitting set (16) is second input end (d) of signal transmission unit (C), this input end (d) links to each other with the output terminal of data processing unit (D), the light that second optical transmitting set (16) sends is received by second optical receiver (13), the output terminal of second optical receiver (13) is second output terminal (c) of signal transmission unit (C), and this output terminal (c) is connected with the input end of control drive unit (B).
2, a kind of whirligig based on the described noncontact whirligig of claim 1 photoelectric coupling transmission system comprises holder (23), and the magnetic jar is to (22), shell (21), turning axle (17); Shell (21) is installed on the holder (23), turning axle (17) links together the rotation side and the base side of noncontact whirligig photoelectric coupling transmission system, the magnetic jar to the inboard of (22) to being fixed on the turning axle (17), the magnetic jar to the outside of (22) to being fixed on the shell (21), electromagnetic coupler (E) is arranged on the magnetic jar in (22), wherein electromagnetic coupler secondary (11) be positioned at the magnetic jar to (22) inboard internally, it is internal to the outside of (22) that the former limit of electromagnetic coupler (14) is positioned at the magnetic jar, it is characterized in that: shell (21) internal fixation has pedestal fixed support (19), second optical transmitting set (16) and first optical receiver (15) are set on the pedestal fixed support (19), be fixed with rotary fixed bracket (18) on the turning axle (17), first optical transmitting set (12) and second optical receiver (13) are set on the rotary fixed bracket (18).
3, a kind of whirligig as claimed in claim 2 based on noncontact whirligig photoelectric coupling transmission system, it is characterized in that: first optical receiver (15) is respectively the ring-type photelectric receiver that PIN type photodiode is formed with second optical receiver (13), and the PIN photodiode on each photelectric receiver is parallel with one another.
4, a kind of whirligig as claimed in claim 2 based on noncontact whirligig photoelectric coupling transmission system, it is characterized in that: first optical transmitting set (12) is that two LD lasing fluorescence diodes compose in parallel, and two LD lasing fluorescence diode symmetries are distributed on the whirligig rotary fixed bracket (18).
5, a kind of whirligig as claimed in claim 2 based on noncontact whirligig photoelectric coupling transmission system, it is characterized in that: second optical transmitting set (16) is that two LD lasing fluorescence diodes compose in parallel, and two LD lasing fluorescence diode symmetries are distributed on the whirligig pedestal fixed support (19).
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| CNB2008100209878A CN100555352C (en) | 2008-08-12 | 2008-08-12 | Noncontact whirligig photoelectric coupling transmission system and whirligig thereof |
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| CNB2008100209878A CN100555352C (en) | 2008-08-12 | 2008-08-12 | Noncontact whirligig photoelectric coupling transmission system and whirligig thereof |
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| CN100555352C CN100555352C (en) | 2009-10-28 |
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| CN111066262B (en) * | 2017-07-03 | 2023-10-13 | 美尔森法国亚眠公司 | Wireless optical communication system between rotary element and fixed element |
| CN108134581A (en) * | 2017-12-27 | 2018-06-08 | 中国船舶重工集团公司第七0三研究所 | A kind of photodiode sophisticated signal conditioning module |
| CN108345556A (en) * | 2018-03-20 | 2018-07-31 | 黄河科技学院 | The circuit for signal conditioning of electronic product control device |
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