CN106225669A - Rail traffic vehicles is taken turns dynamic on-line monitoring system laser sensor system - Google Patents
Rail traffic vehicles is taken turns dynamic on-line monitoring system laser sensor system Download PDFInfo
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- CN106225669A CN106225669A CN201610599732.6A CN201610599732A CN106225669A CN 106225669 A CN106225669 A CN 106225669A CN 201610599732 A CN201610599732 A CN 201610599732A CN 106225669 A CN106225669 A CN 106225669A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
- G01M17/10—Suspensions, axles or wheels
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Abstract
The open rail traffic vehicles of the present invention is taken turns dynamic on-line monitoring system laser sensor system, temperature control and Communication Control is carried out by MCU control module, and receive entrance SBR signal by isolation communication module, enable MCU SW1 signal and MCU SW2 exports square-wave signal, enter ready state, when synchronizing signal is effective, Laser emission drives module work, semiconductor laser is driven to be periodically sent out laser, MCU control module produces the cyclic control signal controlling PSD reception driving module time sharing sampling holding circuit according to square-wave signal simultaneously, make launching and the reception synchronization of PSD of laser, realize the collection of measurement data；Ensure that the high-precision high-speed of dynamic on-line monitoring system laser sensor system is measured by rail traffic vehicles wheel, make system under 5 120KM/H vehicle speed condition can accurate measurements full-scale, and capacity of resisting disturbance is strong, resolution is high, fast response time, cost performance height, noncontact, measurement scope are big.
Description
Technical field
The present invention relates to take turns on-line checking field, be specifically related to rail traffic vehicles wheel and dynamic on-line monitoring system is used
Laser sensor system.
Background technology
Along with the speed-raising comprehensively of the existing passenger train of China and coming into operation in a large number of EMU, wheel is to as vehicle
Parts particularly important in EEF bogie；It is subjected to the total weight of car body, but also between wheel to be transmitted and rail
Active force；Take turns the thermal stress produced when needing and bear bigger dead load and dynamic loading, assembling stress, brake shoe, brake lining braking
And by the centrifugal force etc. during curve；Therefore take turns good state of the art whether can be kept, be related to driving and be perfectly safe.
And along with the information-based upgrading of the railway system, railway system's constituent parts real-time detection requirement to travel condition of vehicle
More and more higher；Take turns carry the total weight of vehicle, vehicle on rail high-speed cruising hour wheel to subject car body and rail
Various quiet, the dynamic deformation from motion that two aspect transmission come, accepts complexity, and running environment is severe；Take turns size possible in running
Transfinite, wear away the faults such as excessive, flat sliding stripping, as found will to have a strong impact on train driving safety not in time.
On-Line Dynamic Monitoring system has been popularized by vehicle wheel now, is running for real time on-line monitoring car wheel-set
Full-scale in journey, thus have found that it is likely that the size of appearance transfinites, wears away the faults such as excessive, flat sliding stripping；And vehicle wheel
It is exactly position sensitive detector to the parts that On-Line Dynamic Monitoring system is most crucial, and laser position sensor (PSD) is owing to surveying
Amount speed is fast, and degree of accuracy height is applied to position sensitive detector, but laser position sensor (PSD) itself is one and half
Conductor device, will give full play to its most quickly measurement characteristics, need complicated drive circuit and control strategy to carry out realizing；
But On-Line Dynamic Monitoring system is mainly passed through CCD(Charge-CoupledDevice by existing vehicle wheel) visual monitoring side
Method measures, but is easily subject to the interference of environment, and certainty of measurement is relatively low, and must could than time relatively low in tested vehicle speed
Measuring, practicality is the highest；And use the measurement system of laser position sensor (PSD) owing to drive circuit is to its control
Measurement effect is bad, causes whole system measurement progress low and poor anti jamming capability.
Summary of the invention
The invention aims to provide a kind of can full-scale in running of real time on-line monitoring car wheel-set,
Have found that it is likely that the size of appearance transfinites, wears away the faults such as excessive, flat sliding stripping, it is achieved that the wheel developed is to on-line monitoring
The high-precision high-speed of system is measured, and capacity of resisting disturbance is strong, and the rail traffic vehicles that practicality is high is taken turns dynamic on-line monitoring system
Use laser sensor system.
The present invention is achieved through the following technical solutions: rail traffic vehicles is taken turns dynamic on-line monitoring system laser sensing
Device system, including the master controller for controlling laser sensor, is connected to transmit the AD harvester of signal with master controller,
With the lock unit that master controller is connected to synchronizing signal, also include that laser sensor, semiconductor laser and position measurement pass
Sensor, described laser sensor includes that position measurement sensor, semiconductor laser, Laser emission drive module, PSD to receive and drive
Dynamic model block, synchronization module, MCU control module, temperature control modules, isolation communication module, power module, described power module divides
Module, synchronization module, temperature control modules is not driven to be connected to carry with MCU control module, isolation communication module, Laser emission
Power supply source, described MCU control module is connected with each other with temperature control modules and isolation communication module respectively, and described MCU controls mould
Block is further connected to PSD and receives driving module and Laser emission driving module, and described PSD receives and drives module to be used for driving position
Putting measurement sensor, described Laser emission drives module to be used for driving semiconductor laser, and described PSD receives and drives module also to connect
Being connected to AD harvester, described synchronization module drives module to be connected with MCU control module and Laser emission respectively, described synchronization module
Being additionally coupled to lock unit, described isolation communication module is also connected with master controller；The outside input of described power module reception ±
15V Power convert goes out ± 12V, ± 5V and+5V power supply for powering to laser sensor；Described synchronization module include optocoupler,
CMOS chip, the 8th TVS pipe, the 40th resistance, the 41st resistance, the 42nd resistance ,+5VISO power supply ,-5VC power supply；
The two ends of described 8th TVS pipe are connected to lock unit, and one end of described 8th TVS pipe is also connected with+5VISO power supply, described+
5VISO power supply is also connected with the first pin of optocoupler, and the other end of described 8th TVS pipe is also connected with one end of the 40th resistance, institute
The other end stating the 40th resistance is also connected with the 3rd pin of optocoupler；4th pin of described optocoupler connects power module and connects
GND, the 5th pin of described optocoupler connects one end of the 41st resistance, and the 5th pin of described optocoupler is also connected with the 42nd
One end of resistance, the 6th pin of described optocoupler is connected to the other end of the 41st resistance, described 41st resistance another
One end is also connected with power module and+5VC power supply, and the second pin of described CMOS chip connects+5VC power supply, described CMOS chip
The 3rd pin connect the 42nd resistance the other end, the first pin of described CMOS chip be connected to Laser emission drive mould
Block, one end of described 42nd resistance is connected to MCU control module；Described Laser emission drives module to include driving signal to produce
Raw circuit, the first analog switch, the second analog switch, the 29th resistance, the 30th resistance, the 31st resistance, the 30th
Two resistance, the 33rd resistance, the 34th resistance, the 35th resistance, the first audion, the second audion, the first amplifier,
6th TVS pipe, the 28th electric capacity, described drive signal generation circuit and power module are connected to receive power module to be provided
5V power supply, described drive signal generation circuit is also connected with the 4th pin of the first analog switch, described first analog switch
6th pin meets GND, and the 9th pin of described first analog switch connects synchronization module, and the 5th of described first analog switch draws
Foot connects the second pin of the second analog switch, the 3rd pin of described first analog switch and the first of the second analog switch and draws
Foot is the most unsettled, and the tenth pin of described second analog switch connects one end of the 29th resistance, described 29th resistance
6th pin of the other end and the second analog switch connects and connects GND, and one end of described 29th resistance is additionally coupled to MCU control
Molding block, the 15th pin of described second analog switch connects one end of the 30th resistance, one end of described 30th resistance
Being also connected with one end of the 31st resistance, the described other end of the 30th resistance and one end of the 32nd resistance connect and connect
GND, the other end of described 32nd resistance connects one end of the 33rd resistance, and one end of described 33rd resistance also connects
It is connected to the negative input end of the first amplifier, one end of other end connection the 6th TVS pipe of described 31st resistance, the described 6th
The other end of TVS pipe is connected to power module and meets GND, and one end of described 6th TVS pipe is also connected with the positive input of the first amplifier
End, the second pin of described first amplifier meets GND, and the 5th pin of described first amplifier connects 12V power supply, described first amplifier
5th pin is also connected with one end of the 28th electric capacity, and the other end of described 28th electric capacity connects GND, described first amplifier
Outfan connect the base stage of the first audion, the colelctor electrode of described first audion and power module are connected to receive 12V
Power supply, the emitter stage of described first audion connects one end of the 34th resistance, and the other end of described 33rd resistance is also
It is connected to one end of the 34th resistance, another termination GND of described 34th resistance, another of described 34th resistance
End is additionally coupled to the positive pole of semiconductor laser, and the negative pole of described semiconductor laser connects one end of the 35th resistance, institute
The other end stating the 35th resistance connects the colelctor electrode of the second audion, and the emitter stage of described second audion meets GND, described
The base stage of the second audion connects MCU control module；Described PSD receives and drives module to include pre-filter circuit, preposition amplification
Circuit, time sharing sampling holding circuit, bias light and dark current eliminate circuit and Sample buffer amplifying circuit, described pre-filtering electricity
Road, pre-amplification circuit, time sharing sampling holding circuit, bias light and dark current elimination circuit and Sample buffer amplifying circuit are successively
Connecting, described pre-filter circuit is also connected with position measurement sensor, and described Sample buffer amplifying circuit is with AD harvester even
Connect；Described time sharing sampling holding circuit is connected with MCU control module；Described position measurement sensor is that one-dimensional position measures sensing
Device；Described time sharing sampling holding circuit includes 4 sample/hold amplifiers, two sample/hold amplifiers and two other sampling
Signal interleaved acquisition is carried out between hold amplifier.
The present invention carries out temperature control and Communication Control by MCU control module, and by isolation communication module receive into
Enter SBR signal, enable MCU-SW1 signal and MCU-SW2 exports square-wave signal, enter ready state, when synchronizing signal has
During effect, Laser emission drive module work, drive semiconductor laser be periodically sent out laser, simultaneously MCU control module according to
Square-wave signal produces the cyclic control signal controlling PSD reception driving module time sharing sampling holding circuit, makes sending out of laser
Penetrate the reception with PSD to synchronize, it is achieved the collection of measurement data；Ensure that dynamic on-line monitoring system is used by rail traffic vehicles wheel to swash
The high-precision high-speed of light sensor system is measured so that system can the full chi of accurate measurements under 5-120KM/H vehicle speed condition
Very little, and capacity of resisting disturbance is strong, resolution is high, fast response time, cost performance height, noncontact, measurement scope are big.
Compared with prior art, the invention have benefit that: 1) MCU control module control temperature control modules complete
Computer heating control and temperature are surveyed, it is ensured that laser sensor works at a temperature of temperature；2) isolation communication module by external module and
The communication signal of MCU control module is isolated, and prevents interference；3) synchronizing signal that lock unit is sent by synchronization module carries out electricity
Air bound from after drive module in transmission to MCU control module and Laser emission, prevent interference；4) Laser emission drives module to receive
Synchronizing signal also produces square wave drive semiconductor laser laser, and laser is mapped on tested wheel reflex to position measurement and passes
Sensor carries out positional distance；Fast response time, measures scope big；5) PSD receives and drives module to be exported by position measurement sensor
Current signal dress is changed to voltage signal, and carries out nursing one's health and the elimination of bias light dark current, it is achieved resolution is high, and precision is high and anti-dry
The signals collecting disturbed.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the circuit diagram of the synchronization module of the present invention.
Fig. 3 is the circuit diagram of the Laser emission driving module of the present invention.
Fig. 4 is that the PSD of the present invention receives the circuit diagram driving module.
Detailed description of the invention
Below in conjunction with the accompanying drawings with detailed description of the invention, the invention will be further described.
See Fig. 1 to Fig. 4, rail traffic vehicles wheel to dynamic on-line monitoring system laser sensor system, including for
Control the master controller of laser sensor, be connected to transmit the AD harvester of signal with master controller, be connected with master controller
For the lock unit of synchronizing signal, also include laser sensor, semiconductor laser D1 and position measurement sensor PSD, described
Laser sensor includes that position measurement sensor PSD, semiconductor laser D1, Laser emission drive module, PSD to receive and drive mould
Block, synchronization module, MCU control module, temperature control modules, isolation communication module, power module, described power module respectively with
MCU control module, isolation communication module, Laser emission drive module, synchronization module, temperature control modules to be connected to provide electricity
Source, described MCU control module is connected with each other with temperature control modules and isolation communication module respectively, and described MCU control module is also
Being respectively connecting to PSD and receive driving module and Laser emission driving module, described PSD receives and drives module for activation point survey
Quantity sensor PSD, described Laser emission drives module to be used for driving semiconductor laser D1, described PSD to receive and drives module also
Being connected to AD harvester, described synchronization module drives module to be connected with MCU control module and Laser emission respectively, described synchronization mould
Block is additionally coupled to lock unit, and described isolation communication module is also connected with master controller；Described power module receives outside input
± 15V Power convert goes out ± 12V, ± 5V and+5V power supply for powering to laser sensor；Described synchronization module includes optocoupler
U15, CMOS chip U16D, the 8th TVS pipe TVS8, the 40th resistance R40, the 41st resistance R41, the 42nd resistance R42,
+ 5VISO power supply ,-5VC power supply；The two ends of described 8th TVS pipe TVS8 are connected to lock unit, described 8th TVS pipe TVS8
One end is also connected with+5VISO power supply, and described+5VISO power supply is also connected with first pin of optocoupler U15, described 8th TVS pipe TVS8
The other end be also connected with one end of the 40th resistance R40, the other end of described 40th resistance R40 is also connected with the of optocoupler U15
Three pins；4th pin of described optocoupler U15 connects power module and meets GND, and the 5th pin of described optocoupler U15 connects the 4th
One end of 11 resistance R41, the 5th pin of described optocoupler U15 is also connected with one end of the 42nd resistance R42, described optocoupler
6th pin of U15 is connected to the other end of the 41st resistance R41, and the other end of described 41st resistance R41 is also connected with
Power module and+5VC power supply, second pin of described CMOS chip U16D connects+5VC power supply, described CMOS chip U16D's
3rd pin connects the other end of the 42nd resistance R42, and first pin of described CMOS chip U16D is connected to Laser emission
Driving module, one end of described 42nd resistance R42 is connected to MCU control module；Described Laser emission drives module to include
Drive signal generation circuit, the first analog switch U11C, the second analog switch U11B, the 29th resistance R29, the 30th resistance
R30, the 31st resistance R31, the 32nd resistance R32, the 33rd resistance R33, the 34th resistance R34, the 35th
Resistance R35, the first audion Q1, the second audion Q2, the first amplifier U13, the 6th TVS pipe TVS6, the 28th electric capacity C28,
Described drive signal generation circuit and power module are connected to receive the 5V power supply that power module provides, and described driving signal produces
Raw circuit is also connected with the 4th pin of the first analog switch U11C, and the 6th pin of described first analog switch U11C meets GND, institute
The 9th pin stating the first analog switch U11C connects synchronization module, and the 5th pin of described first analog switch U11C connects the
Second pin of two analog switch U11B, the 3rd pin of described first analog switch U11C and the of the second analog switch U11B
One pin is the most unsettled, one end of the tenth pin connection the 29th resistance R29 of described second analog switch U11B, and described second
The other end of 19 resistance R29 and the 6th pin of the second analog switch U11B connect and connect GND, described 29th resistance
One end of R29 is additionally coupled to MCU control module, and the 15th pin of described second analog switch U11B connects the 30th resistance
One end of R30, one end of described 30th resistance R30 is also connected with one end of the 31st resistance R31, described 30th resistance
The other end of R30 and one end of the 32nd resistance R32 connect and connect the other end of GND, described 32nd resistance R32 and connect
One end of 33rd resistance R33, one end of described 33rd resistance R33 is additionally coupled to the negative input end of the first amplifier U13,
The other end of described 31st resistance R31 connects one end of the 6th TVS pipe TVS6, the other end of described 6th TVS pipe TVS6
Being connected to power module and meet GND, one end of described 6th TVS pipe TVS6 is also connected with the positive input terminal of the first amplifier U13, described
Second pin of the first amplifier U13 meets GND, and the 5th pin of described first amplifier U13 connects 12V power supply, described first amplifier U13
The 5th pin be also connected with one end of the 28th electric capacity C28, the other end of described 28th electric capacity C28 connects GND, described
The outfan of the first amplifier U13 connects the base stage of the first audion Q1, the colelctor electrode of described first audion Q1 and power module
Being connected to receive 12V power supply, the emitter stage of described first audion Q1 connects one end of the 34th resistance R34, and described the
The other end of 33 resistance R33 is additionally coupled to one end of the 34th resistance R34, another of described 34th resistance R34
The other end of termination GND, described 34th resistance R34 is additionally coupled to the positive pole of semiconductor laser D1, and described quasiconductor swashs
The negative pole of light device D1 connects one end of the 35th resistance R35, and the other end of described 35th resistance R35 connects the two or three pole
The colelctor electrode of pipe Q2, the emitter stage of described second audion Q2 connects the base stage of GND, described second audion Q2 and connects MCU control
Module；Described PSD receives and drives module to include pre-filter circuit, pre-amplification circuit, time sharing sampling holding circuit, bias light
Eliminating circuit and Sample buffer amplifying circuit with dark current, described pre-filter circuit, pre-amplification circuit, time sharing sampling keep
Circuit, bias light and dark current eliminate circuit and Sample buffer amplifying circuit is sequentially connected with, described pre-filter circuit also with position
Putting measurement sensor PSD to connect, described Sample buffer amplifying circuit is connected with AD harvester；Described time sharing sampling holding circuit with
MCU control module connects；Described position measurement sensor PSD is that one-dimensional position measures sensor；Described time sharing sampling keeps electricity
Road includes 4 sample/hold amplifiers, carries out letter between two sample/hold amplifiers and two other sample/hold amplifier
Number interleaved acquisition.
In present embodiment, described pre-filter circuit includes the first TVS pipe TVS1, the second TVS pipe TVS2, the first resistance
R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the second amplifier U2, the 3rd amplifier U3, the first electric capacity
C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the 7th electric capacity C7, the 8th electric capacity
C8；Described position measurement sensor PSD middle-end connects one end of the first TVS pipe TVS1, and one end of described first TVS pipe TVS1 is also
Connect one end of the first resistance R1, another termination+5V power supply of described first resistance R1, another of described first TVS pipe TVS1
One end of termination GND, described position measurement sensor PSD is also connected with one end of the 3rd resistance R3, described position measurement sensor
The other end of PSD is also connected with one end of the 4th resistance R4, and the other end of described 3rd resistance R3 connects one end of the first electric capacity C1,
One end of described first electric capacity C1 is also connected with one end of the second resistance R2, another termination-5V power supply of described second resistance R2, institute
The other end stating the first electric capacity C1 connects one end of the second TVS pipe TVS2, and one end of described first electric capacity C1 is also connected with the 2nd TVS
The other end of pipe TVS2, one end of described second TVS pipe TVS2 is also connected with one end of the second electric capacity C2, described second TVS pipe
The other end of TVS2 is also connected with the other end of the second electric capacity C2, and one end of described second electric capacity C2 also connects GND, described second electric capacity
The other end of C2 is also connected with the other end of the 4th resistance R4, and one end of described 3rd resistance R3 is also connected with the one of the 3rd electric capacity C3
End, the other end of described 3rd electric capacity C3 connects one end of the 5th resistance R5, and one end of described 5th resistance R5 is additionally coupled to the
The negative input end of two amplifiers U2, the positive input termination GND of described second amplifier U2, the positive input terminal of described second amplifier U2 also connects
Connecing one end of the 6th electric capacity C6, the other end of described 6th electric capacity C6 is also connected with the second pin of the second amplifier U2, and described second
Second pin of amplifier U2 connects-5V power supply, and the 5th pin of described second amplifier U2 connects+5V power supply, described second amplifier U2
5th pin is also connected with one end of the 5th electric capacity C5, another termination GND of described 5th electric capacity C5, described second amplifier U2 defeated
Going out the other end of end and the 5th resistance R5, the outfan of described second amplifier U2 is additionally coupled to pre-amplification circuit；Described 4th
One end of resistance R4 is also connected with one end of the 4th electric capacity C4, and the other end of described 4th electric capacity C4 connects the one of the 6th resistance R6
End, the other end of described 4th electric capacity C4 is also connected with the negative input end of the 3rd amplifier U3, the positive input terminal of described 3rd amplifier U3
Meeting GND, the second pin of described 3rd amplifier U3 connects one end of the 8th electric capacity C8, and one end of described 8th electric capacity C8 is also connected with-
5V power supply, another termination GND of described 8th electric capacity C8, the 5th pin of described 3rd amplifier U3 connects+5V power supply, and described the
5th pin of three amplifiers U3 is also connected with one end of the 7th electric capacity C7, another termination GND of described 7th electric capacity C7, and the described 3rd
The outfan of amplifier U3 connects the other end of the 6th resistance R6, and the outfan of described 3rd amplifier U3 is additionally coupled to preposition amplification electricity
Road.
In present embodiment, described pre-amplification circuit include the 7th resistance R7, the 8th resistance R8, the 9th resistance R9,
Ten resistance R10, the 9th electric capacity C9, the tenth electric capacity C10, four high guaily unit U4A, the 5th amplifier U4B；In described pre-filter circuit
The outfan of the second amplifier U2 is connected to one end of the 7th resistance R7, and the other end of described 7th resistance R7 connects the 9th resistance R9
One end, the other end of described seven resistance R7 connects the negative input end of the 5th amplifier U4B, the positive input of described 5th amplifier U4B
Termination GND, the input of described 5th amplifier U4B connects the other end of the 9th resistance R9 and is connected to time sharing sampling holding electricity
Road；The outfan of the 3rd amplifier U3 in described pre-filter circuit is connected to one end of the 8th resistance R8, described 8th resistance
The other end of R8 connects the negative input end of four high guaily unit U4A, and the other end of described 8th resistance R8 is also connected with the tenth resistance R10's
One end, the other end of described tenth resistance R10 also outfan with four high guaily unit U4A is connected and is connected to time sharing sampling and keeps electricity
Road, the 8th pin of described four high guaily unit U4A connects+5V power supply, and the 8th pin of described four high guaily unit U4A is also connected with the 9th electric capacity
One end of C9, another termination GND of described 9th electric capacity C9, the 4th pin of described four high guaily unit U4A connects-5V power supply, described
4th pin of four high guaily unit U4A is also connected with one end of the tenth electric capacity C10, the other end of described tenth electric capacity C10 and the 4th fortune
The positive input terminal putting U4A connects and meets GND.
In present embodiment, described time sharing sampling holding circuit includes that the first employing hold amplifier U5, the second employing are protected
Hold amplifier U6, the 3rd employing hold amplifier U7, the 4th employing hold amplifier U8, the 11st electric capacity C11, the 12nd electric capacity
C12, the 13rd electric capacity C13, the 14th electric capacity C14, the 15th electric capacity C15, the 16th electric capacity C16, the 17th electric capacity C17,
18 electric capacity C18, the 9th resistance R9 in described pre-amplification circuit connect second pin of the first employing hold amplifier U5,
The input of the 5th amplifier U4B in described pre-amplification circuit connects second pin of the second employing hold amplifier U6, institute
The first pin stating the first employing hold amplifier U5 connects+12V power supply, and described first uses first pin of hold amplifier U5
Being also connected with one end of the 11st electric capacity C11, another termination GND of described 11st electric capacity C11, described first uses holding to amplify
3rd pin of device U5 connects one end of the 12nd electric capacity C12, and one end of described 12nd electric capacity C12 also meets GND, and the described tenth
5th pin of another termination the first employing hold amplifier U5 of two electric capacity C12, described first uses hold amplifier U5's
5th pin also connects-12V power supply；Described second uses first pin of hold amplifier U6 to be also connected with the 13rd electric capacity C13's
One end, described second uses first pin of hold amplifier U6 also to connect+12V power supply, the other end of described 13rd electric capacity C13
Meeting GND, described second uses the 5th pin of hold amplifier U6 to connect-12V power supply, and described second uses hold amplifier U6's
5th pin is also connected with one end of the 14th electric capacity C14, and described second uses the 3rd pin of hold amplifier U6 to connect the tenth
The other end of four electric capacity C14, the other end of described 14th electric capacity C14 also meets GND；The tenth electricity in described pre-amplification circuit
The resistance other end is additionally coupled to second pin of the 3rd employing hold amplifier U7, and the outfan of described four high guaily unit U4A connects the
Four the second pins using hold amplifier U8, the described 3rd uses first pin of hold amplifier U7 to connect+12V power supply, institute
The first pin stating the 3rd employing hold amplifier U7 is also connected with one end of the 15th electric capacity C15, described 15th electric capacity C15's
Another terminates GND, and the described 3rd uses the 5th pin of hold amplifier U7 to connect-12V power supply, and the described 3rd uses holding to put
5th pin of big device U7 is also connected with one end of the 16th electric capacity C16, and the described 3rd uses the 3rd pin of hold amplifier U7
Connecting the other end of the 16th electric capacity C16, the other end of described 16th electric capacity C16 also meets GND, and the described 4th uses holding to put
First pin of big device U8 also connects+12V power supply, and the described 4th uses first pin of hold amplifier U8 to be also connected with the 17th electricity
Holding one end of C17, another termination GND of described 17th electric capacity C17, the described 4th uses the 5th pin of hold amplifier U8
Connecing-12V power supply, the described 4th uses the 5th pin of hold amplifier U8 to be also connected with one end of the 18th electric capacity C18, and described the
Four use the 3rd pin of hold amplifier U8 to be also connected with the other end of the 18th electric capacity C18, and described 18th electric capacity C18's is another
One termination GND；Described first the 7th pin using hold amplifier U5 and the 3rd uses the 7th pin of hold amplifier U7
Connecting and be connected to MCU control module, described second uses the 7th pin and the 4th of hold amplifier U6 to use keeps amplifying
7th pin of device U8 connects and is connected to MCU control module；Described first uses hold amplifier U5, the second employing holding to put
Big device U6, the 3rd employing hold amplifier U7 and the 4th use the output termination bias light of hold amplifier U8 and dark current to eliminate
Circuit.
In present embodiment, described bias light and dark current eliminate circuit include the 6th amplifier U9A, the 7th amplifier U9B, the
11 resistance R11, the 12nd resistance R12, the 13rd resistance R13, the 14th resistance R14, the 15th resistance R15, the 16th electricity
Resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th electric capacity C19, first in described time sharing sampling holding circuit
The outfan using hold amplifier U5 connects one end of the 11st resistance R11, second in described time sharing sampling holding circuit
The outfan using hold amplifier U6 connects one end of the 12nd resistance R12, the 3rd in described time sharing sampling holding circuit
The outfan using hold amplifier U7 connects one end of the 13rd resistance R13, the 4th in described time sharing sampling holding circuit
The outfan using hold amplifier U8 connects one end of the 14th resistance R14, and the other end of described 11st resistance R11 connects
The negative input end of the 6th amplifier U9A, the other end of described 11st resistance R11 is also connected with one end of the 15th resistance R15, described
The other end of the 15th resistance R15 connects the outfan of the 6th amplifier U9A, and the 8th pin connection of described 6th amplifier U9A+
12V power supply, the 8th pin of described 6th amplifier U9A is also connected with one end of the 19th electric capacity C19, described 19th electric capacity C19
Another termination GND, the 4th pin of described 6th amplifier U9A connects one end of the 20th electric capacity C20 and connects-12V power supply, institute
The other end stating the 20th electric capacity C20 connects one end of the 17th resistance R17, and one end of described 17th resistance R17 also connects
GND, the positive input terminal of described 6th amplifier U9A connects the other end of the 17th resistance R17, and described 17th resistance R17's is another
One end is also connected with the other end of the 12nd resistance R12, and the outfan of described 6th amplifier U9A is connected to Sample buffer and amplifies electricity
Road；The other end of described 13rd resistance R13 is connected to the negative input end of the 7th amplifier U9B, and described 13rd resistance R13's is another
One end connects one end of the 16th resistance R16, and the outfan of described 7th amplifier U9B connects the other end of the 16th resistance R16,
The positive input terminal of described 7th amplifier U9B is connected to the other end of the 14th resistance R14, another of described 14th resistance R14
End connects one end of the 18th resistance R18, another termination GND of described 18th resistance R18, described 7th amplifier U9B defeated
Go out end and be connected to Sample buffer amplifying circuit.
In present embodiment, described Sample buffer amplifying circuit include the 8th amplifier U10A, the 9th amplifier U10B, the 19th
Resistance R19, the 20th resistance R20, the 21st resistance R21, the 22nd resistance R22, the 21st electric capacity C21, the 20th
Two electric capacity C22；Described bias light and dark current eliminate one end that the 6th amplifier U9A in circuit connects the 19th resistance R19, institute
State one end that bias light and dark current eliminate connection the 20th resistance R20 of the 7th amplifier U9B in circuit, described 19th electricity
The other end of resistance R19 connects the negative input end of the 8th amplifier U10A, and the other end of described 19th resistance R19 is also connected with the 20th
One end of one resistance R21, the outfan of other end connection the 8th amplifier U10A of described 21st resistance R21, the described 8th
8th pin of amplifier U10A connects+12V power supply, and the 8th pin of described 8th amplifier U10A is also connected with the 21st electric capacity C21
One end, described 21st electric capacity C21 another termination GND, described 8th amplifier U10A the 4th pin connect the 20th
One end of two electric capacity C22 also connects-12V power supply, and the other end of described 22nd electric capacity C22 is just connecting the 8th amplifier U10A
Input also meets GND；The negative input end of other end connection the 9th amplifier U10B of described 20th resistance R20, the described 20th
The other end of resistance R20 is also connected with one end of the 22nd resistance R22, the positive input termination GND of described 9th amplifier U10B, institute
State the 9th amplifier U10B outfan connect the 22nd resistance R22 the other end, the outfan of described 9th amplifier U10B and
The outfan of the 8th amplifier U10A connects AD harvester.
In present embodiment, temperature control modules completes computer heating control and temperature test under the control of MCU control module,
To ensure that laser sensor is operated under a metastable temperature environment；External module is controlled by isolation communication module with MCU
The communication signal of molding block carries out electrical isolation, prevents from interfering between disparate modules；Synchronization module receives to outside same
The synchronizing signal of step device, inputs to MCU control module after electrical isolation and Laser emission drives module；Laser emission drives
Module receives the control signal to MCU control module and the next synchronizing signal to synchronization module, produces the side of about 1KHz
Ripple drives laser diode to send laser；Laser be mapped on tested wheel to reflex to position sensitive detector PSD carry out position away from
From；PSD receives and drives module that position sensitive detector PSD output current signal is converted to voltage signal, then nurses one's health
And bias light dark current eliminates, finally export and be acquired to external module AD harvester.
In present embodiment, the synchronizing signal that described synchronization module inputs through external synchronizer is carried out through optocoupler U15
After isolation, export respectively and drive module to Laser emission after carrying out reversely to MCU control module and CMOS chip U16D.
In present embodiment, described Laser emission drives module by drive signal generation circuit and emitter power amplifier group
Become；Drive signal generation circuit is realized by general amplifier and resistance capacitance, drive signal through the first analog switch U11C and
Second analog switch U11B controls, through the 31st resistance R31 input by the first amplifier U13, the 32nd resistance R32, the
33 resistance R33, the 34th resistance R34 and the emitter following power amplifier of the first audion Q1 composition；First simulation
Switch U11C and the second analog switch U11B is 74HC4053 chip, has MCU control module and synchronizing signal to be controlled respectively；
When laser sensor enters ready state, MCU control module is opened by MCU-SW1 system the second analog switch U11B and is passed through
MCU-SW2 signal input square-wave signal, but now the first audion Q1 is off state, so semiconductor laser D1 appoints place
In closed mode, the transmitting for laser is ready；When synchronizing signal controls the first analog switch by synchronization module input
U11C is open-minded, then the first amplifier U13 output high level makes the first audion Q1 open-minded, and the first audion Q1 is in magnifying state,
The electric current of the first audion Q1 output is the first amplifier U13 output electric current (1+ β) times (β is the amplification of Q1), now partly
Conductor laser D1 periodically opens shutoff in the control of MCU-SW2 square-wave signal, it is achieved Laser emission function.
In present embodiment, described PSD receives and drives module to be divided into pre-filter circuit, pre-amplification circuit, timesharing to adopt
Sample holding circuit, bias light and dark current eliminate circuit and Sample buffer amplifying circuit；In described pre-filter circuit, the first electricity
Resistance R1 passes through+5V power supply provides bias voltage for position measurement sensor PSD, produces electric current from position measurement sensor PSD's
Two measurement port flow out, and a road is converted to voltage signal by the 3rd electric capacity C3 after the 3rd resistance R3, the 3rd resistance R3
Being input to the 4th pin of the second amplifier U2, another road is converted to voltage signal passes through through the 4th resistance R4, the second resistance R2
3rd electric capacity C3 is input to the 4th pin of the 3rd amplifier U3；Owing to using the second resistance R2 of common resistance, two-way is made to measure
The interference signal of signal keeps consistent, brings convenience for follow-up filtering interfering；First electric capacity C1 and the second electric capacity C2 carries out low pass
Filtering, the 3rd electric capacity C3 and the 4th electric capacity C4 carries out high-pass filtering, it is ensured that the signal of needs enters late-class circuit and filters and be not required to
The signal wanted；First TVS pipe TVS1 is protection device；And the 5th resistance R5, the second amplifier U2 (or the 6th resistance R6, the 3rd fortune
Put U3) signal that inputted by the 3rd electric capacity C3 (or the 4th electric capacity C4) reversely amplifies output to next stage；And preposition amplification
The signal that pre-filter circuit conveying comes to be amplified by main circuit, preferably samples for rear stage circuit.
In present embodiment, described time sharing sampling holding circuit is made up of 4 employing hold amplifiers, and described employing keeps
Amplifier signal is AD781, when two of which uses hold amplifier to gather a same collection period of road signal different respectively
Between segment data；Send due to semiconductor laser D1 is square-wave pulse signal, and the high level time of square-wave signal sends laser,
Low level time does not send laser；Therefore, when sending laser, MCU control module control first employing hold amplifier U5 and
3rd uses hold amplifier U7 the two to use hold amplifier to carry out signals collecting, and second uses hold amplifier U6 and the
Four use hold amplifier U8 the two use hold amplifiers carry out data signal holding, when square-wave signal be low level (no
Send out laser) time, first uses hold amplifier U5 and the 3rd to use hold amplifier U7 the two to use hold amplifier to carry out
Data signal keeps, and second uses hold amplifier U6 and the 4th to use hold amplifier U8 the two to use hold amplifier to enter
Row data signal acquisition, so replaces；So, first hold amplifier U5 and the 3rd is used to use hold amplifier U7 output
Signal is signal when laser unlatching, and first uses hold amplifier U5 and the 3rd to use the signal of hold amplifier U7 output
For signal during laser shutdown, these 4 groups of signals are input simultaneously to next stage bias light and dark current eliminates circuit.
In present embodiment, bias light and dark current eliminate signal time laser is opened by circuit when laser shutdown
Signal does subtraction, effectively filters out bias light and dark current signals, obtains pure position signalling and output is put to next stage collection
Big circuit；Acquisition buffer amplifying circuit will need the signal gathered to be amplified, and output to wheel is unified to on-line detecting system
AD harvester carries out signals collecting and is converted into digital signal, finally sends into master controller and processes.
In present embodiment, after system electrification, all switches and enable signal are closed, and MCU control module is only
Carry out temperature control modules and isolation communication module and be in wait external module state；MCU control module is by isolation communication
When module receives entrance SBR signal, enable MCU-SW1 signal and export square-wave signal at MCU-SW2, entering ready
State；When synchronizing signal is effective, Laser emission drives module work, drives semiconductor laser D1 to be periodically sent out laser,
MCU control module produces the periodicity controlling PSD reception driving module time sharing sampling holding circuit according to square-wave signal simultaneously
Control signal, makes launching and the reception synchronization of PSD of laser, it is achieved the collection of measurement data.
Protection scope of the present invention includes but not limited to embodiment of above, and protection scope of the present invention is with claims
It is as the criterion, replacement that any those skilled in the art making this technology is readily apparent that, deforms, improve and each fall within the present invention's
Protection domain.
Claims (7)
1. rail traffic vehicles is taken turns dynamic on-line monitoring system laser sensor system, including for controlling laser sensor
Master controller, with master controller be connected to transmit signal AD harvester, be connected to synchronizing signal with master controller
Lock unit, it is characterised in that: also include laser sensor, semiconductor laser (D1) and position measurement sensor (PSD), described
Laser sensor includes that position measurement sensor (PSD), semiconductor laser (D1), Laser emission drive module, PSD to receive and drive
Dynamic model block, synchronization module, MCU control module, temperature control modules, isolation communication module, power module, described power module divides
Module, synchronization module, temperature control modules is not driven to be connected to carry with MCU control module, isolation communication module, Laser emission
Power supply source, described MCU control module is connected with each other with temperature control modules and isolation communication module respectively, and described MCU controls mould
Block is further connected to PSD and receives driving module and Laser emission driving module, and described PSD receives and drives module to be used for driving position
Putting measurement sensor (PSD), described Laser emission drives module to be used for driving semiconductor laser (D1), and described PSD receives and drives
Dynamic model block is additionally coupled to AD harvester, and described synchronization module drives module to be connected with MCU control module and Laser emission respectively, institute
Stating synchronization module and be additionally coupled to lock unit, described isolation communication module is also connected with master controller；Outside described power module receives
Portion input ± 15V Power convert go out ± 12V, ± 5V and+5V power supply be used for power to laser sensor.
Rail traffic vehicles the most according to claim 1 is taken turns dynamic on-line monitoring system laser sensor system, its
It is characterised by: described synchronization module includes optocoupler (U15), CMOS chip (U16D), the 8th TVS pipe (TVS8), the 40th resistance
(R40), the 41st resistance (R41), the 42nd resistance (R42) ,+5VISO power supply ,-5VC power supply；Described 8th TVS pipe
(TVS8) two ends are connected to lock unit, and one end of described 8th TVS pipe (TVS8) is also connected with+5VISO power supply, described+
5VISO power supply is also connected with the first pin of optocoupler (U15), and the other end of described 8th TVS pipe (TVS8) is also connected with the 40th electricity
One end of resistance (R40), the other end of described 40th resistance (R40) is also connected with the 3rd pin of optocoupler (U15)；Described optocoupler
(U15) the 4th pin connects power module and meets GND, and the 5th pin of described optocoupler (U15) connects the 41st resistance
(R41) one end, the 5th pin of described optocoupler (U15) is also connected with one end of the 42nd resistance (R42), described optocoupler
(U15) the 6th pin is connected to the other end of the 41st resistance (R41), the other end of described 41st resistance (R41)
Being also connected with power module and+5VC power supply, the second pin of described CMOS chip (U16D) connects+5VC power supply, described CMOS core
3rd pin of sheet (U16D) connects the other end of the 42nd resistance (R42), the first pin of described CMOS chip (U16D)
Being connected to Laser emission and drive module, one end of described 42nd resistance (R42) is connected to MCU control module.
Rail traffic vehicles the most according to claim 1 is taken turns dynamic on-line monitoring system laser sensor system, its
It is characterised by: described Laser emission drives module to include drive signal generation circuit, the first analog switch (U11C), the second simulation
Switch (U11B), the 29th resistance (R29), the 30th resistance (R30), the 31st resistance (R31), the 32nd resistance
(R32), the 33rd resistance (R33), the 34th resistance (R34), the 35th resistance (R35), the first audion (Q1),
Two audions (Q2), the first amplifier (U13), the 6th TVS pipe (TVS6), the 28th electric capacity (C28), described driving signal produces
Circuit and power module are connected to receive the 5V power supply that power module provides, and described drive signal generation circuit is also connected with first
4th pin of analog switch (U11C), the 6th pin of described first analog switch (U11C) meets GND, and described first simulation is opened
The 9th pin closing (U11C) connects synchronization module, and the 5th pin of described first analog switch (U11C) connects the second simulation and opens
Close second pin of (U11B), the 3rd pin and the first of the second analog switch (U11B) of described first analog switch (U11C)
Pin is the most unsettled, and the tenth pin of described second analog switch (U11B) connects one end of the 29th resistance (R29), and described the
The other end of 29 resistance (R29) and the 6th pin of the second analog switch (U11B) connect and connect GND, and the described 29th
One end of resistance (R29) is additionally coupled to MCU control module, and the 15th pin of described second analog switch (U11B) connects the 3rd
One end of ten resistance (R30), one end of described 30th resistance (R30) is also connected with one end of the 31st resistance (R31), described
The other end of the 30th resistance (R30) and one end of the 32nd resistance (R32) connect and connect GND, described 32nd resistance
(R32) the other end connects one end of the 33rd resistance (R33), and one end of described 33rd resistance (R33) is additionally coupled to
The negative input end of the first amplifier (U13), the other end of described 31st resistance (R31) connects the one of the 6th TVS pipe (TVS6)
End, the other end of described 6th TVS pipe (TVS6) is connected to power module and meets GND, one end of described 6th TVS pipe (TVS6)
Being also connected with the positive input terminal of the first amplifier (U13), the second pin of described first amplifier (U13) connects GND, described first amplifier
(U13) the 5th pin connects 12V power supply, and the 5th pin of described first amplifier (U13) is also connected with the 28th electric capacity (C28)
One end, the other end of described 28th electric capacity (C28) connects GND, and the outfan of described first amplifier (U13) connects the one or three
The base stage of pole pipe (Q1), the colelctor electrode of described first audion (Q1) and power module be connected to receive 12V power supply, and described the
The emitter stage of one audion (Q1) connects one end of the 34th resistance (R34), the other end of described 33rd resistance (R33)
It is additionally coupled to one end of the 34th resistance (R34), another termination GND of described 34th resistance (R34), the described 30th
The other end of four resistance (R34) is additionally coupled to the positive pole of semiconductor laser (D1), the negative pole of described semiconductor laser (D1)
Connecting one end of the 35th resistance (R35), the other end of described 35th resistance (R35) connects the second audion (Q2)
Colelctor electrode, the emitter stage of described second audion (Q2) meets GND, and the base stage of described second audion (Q2) connects MCU and controls mould
Block.
Rail traffic vehicles the most according to claim 1 is taken turns dynamic on-line monitoring system laser sensor system, its
It is characterised by: described PSD receives and drives module to include pre-filter circuit, pre-amplification circuit, time sharing sampling holding circuit, the back of the body
Scape light and dark current eliminate circuit and Sample buffer amplifying circuit, described pre-filter circuit, pre-amplification circuit, time sharing sampling
Holding circuit, bias light and dark current eliminate circuit and Sample buffer amplifying circuit is sequentially connected with, and described pre-filter circuit is also
Being connected with position measurement sensor (PSD), described Sample buffer amplifying circuit is connected with AD harvester.
Rail traffic vehicles the most according to claim 4 is taken turns dynamic on-line monitoring system laser sensor system, its
It is characterised by: described time sharing sampling holding circuit is connected with MCU control module.
Rail traffic vehicles the most according to claim 1 is taken turns dynamic on-line monitoring system laser sensor system, its
It is characterised by: described position measurement sensor (PSD) is that one-dimensional position measures sensor.
Rail traffic vehicles the most according to claim 4 is taken turns dynamic on-line monitoring system laser sensor system, its
It is characterised by: described time sharing sampling holding circuit includes 4 sample/hold amplifiers, two sample/hold amplifiers and other two
Signal interleaved acquisition is carried out between individual sample/hold amplifier.
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| CN201610599732.6A CN106225669B (en) | 2016-07-28 | 2016-07-28 | Rail traffic vehicles wheel is to dynamic on-line monitoring system laser sensor system |
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| CN201610599732.6A CN106225669B (en) | 2016-07-28 | 2016-07-28 | Rail traffic vehicles wheel is to dynamic on-line monitoring system laser sensor system |
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| CN106225669B (en) | 2019-06-07 |
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