CN106428110B - A kind of train wheel failure real-time monitoring device - Google Patents
A kind of train wheel failure real-time monitoring device Download PDFInfo
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- CN106428110B CN106428110B CN201610988873.7A CN201610988873A CN106428110B CN 106428110 B CN106428110 B CN 106428110B CN 201610988873 A CN201610988873 A CN 201610988873A CN 106428110 B CN106428110 B CN 106428110B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/12—Measuring or surveying wheel-rims
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Abstract
A kind of train wheel failure real-time monitoring device is made of power circuit, controller, voltage reference circuit, resistance strain gage, nonequilibrium bridge circuit, low noise amplifier circuit, display circuit, warning circuit, storage circuit；Monitoring device is mounted on intra-locomotive, and resistance strain gage is pasted and fixed on the spoke of train wheel；The contact force of resistance strain gage dynamic monitoring train wheel tread and rail after nonequilibrium bridge circuit and low noise amplifier circuit enhanced processing, send controller to be analyzed, handles, showing and storing；When wheel tread stripping is transfinited, wheel pair and the impact force of rail is caused to transfinite, spoke deformation is caused to be transfinited, after controller detects the shelled tread to transfinite by resistance strain gage, meeting while alarm engineer, corresponding wheelset failure is checked after locomotive Hui Ku, ensures locomotive driving safety；The data of storage can also be used as the valid data of train wheel health control.
Description
Technical field
The present invention relates to a kind of electronic technology field of train wheel failure real-time monitoring device, be particularly suitable for locomotive,
The track traffics such as urban rail, subway wheel is to monitoring.
Background technology
Train wheel is the component that locomotive is uniquely contacted with rail, emergency braking, locomotive system during locomotive high-speed cruising
Dynamic improper release etc. causes locomotive to slide, and the high temperature that wheel pair is generated with rail contact position severe friction in sliding process makes wheel to stepping on
Face abrades；Caused expand with heat and contract with cold repeatedly can also promote wheel to form fine cracks to surface when wheel is to braking, cause wheel pair
Upper portion of material is removed；The vibration that train wheel tread failure is brought not only reduces the use longevity of locomotive and circuit with impact
Life, while considerably increase energy consumption and maintenance cost, it is also possible to axle temperature is caused to steeply rise or even cause axle fervent；
Periodic impact vibration can also cause axle, wheel to extend the initiated failure crackle in the truck components such as, framework rapidly, draw
Play the fracture distress of parts；Therefore, wheel tread failure is one of major hidden danger for causing train travel accident.
It is less that the report for the train wheel tread failure real-time monitoring device being monitored on locomotive is directly installed at present,
Therefore it is badly in need of a kind of device that can monitor wheelset failure in real time.
The content of the invention
It is an object of the present invention to provide a kind of train wheel failure real-time monitoring devices, are directly installed on locomotive,
Line monitors train wheel tread failure, if wheel tread failure is more than certain limit, device alarm engineer,
Corresponding wheelset failure is checked after locomotive Hui Ku, ensures locomotive driving safety.
The technical scheme is that：A kind of train wheel failure real-time monitoring device, by power circuit, controller, electricity
Press reference circuit, resistance strain gage, nonequilibrium bridge circuit, low noise amplifier circuit, display circuit, warning circuit, storage electricity
Road forms；Monitoring device is mounted on intra-locomotive, and resistance strain gage is pasted and fixed on the spoke of train wheel；Resistance strain gage
The contact force of dynamic monitoring train wheel tread and rail passes through nonequilibrium bridge circuit and low noise amplifier circuit enhanced processing
Afterwards, controller sent to be analyzed, handled, shown and stored；When wheel tread stripping is transfinited, cause impact of the wheel pair with rail
Power transfinites, and spoke deformation is caused to be transfinited, can same alarm after controller detects the shelled tread to transfinite by resistance strain gage
Prompting engineer is overhauled later, ensures locomotive driving safety；The data of storage can also be used as train wheel health
The valid data of management.
The power circuit is made of the first DC/DC modules；The power input anode foot VIN+ connections of first DC/DC modules
Locomotive 24V positive poles；Power input cathode foot VIN- connection locomotive 24V power cathodes, power supply output cathode foot VOUT outputs
First power vd 1, power supply output negative pole foot GND export the first power supply publicly GND1；Power circuit supply controller, voltage base
Quasi- circuit, low noise amplifier circuit, display circuit, warning circuit, storage circuit working power.
The voltage reference circuit is made of first voltage fiducial chip；The control source foot of first voltage fiducial chip
The first power vd of VIN connections 1；Public lower margin connects the first power supply publicly GND1；Voltage reference output pin VREF outputs first
Voltage reference VREF1；First voltage benchmark VREF1 is used for nonequilibrium bridge circuit and controller as voltage reference；First
The model of voltage reference chip is LT1461.
The controller is made of the first controller；The first power vd of positive pole foot VCC connections 1 of first controller,
The first power supply of power ground pin GND connections publicly GND1；The first electricity of AD conversion reference voltage input pin connection of first controller
Press benchmark VREF1.
The nonequilibrium bridge circuit is made of first resistor, second resistance, 3rd resistor；First resistor, second resistance,
3rd resistor and resistance strain gage composition nonequilibrium bridge；The supply pin VCC connection first voltage benchmark of nonequilibrium bridge
VREF1；The first power supply of public lower margin GND connections of nonequilibrium bridge publicly GND1；First resistor is connected to nonequilibrium bridge
Supply pin VCC and output cathode foot OUT+ between；Second resistance is connected to the output cathode foot OUT+ and public affairs of nonequilibrium bridge
Altogether between lower margin GND；3rd resistor is connected between the output negative pole foot OUT- of nonequilibrium bridge and public lower margin GND；Resistance
Foil gauge is connected between the supply pin VCC of nonequilibrium bridge and output negative pole foot OUT-；When wheel tread is contacted with rail, lead
When causing wheel to spoke and resistance strain gage generation stress deformation, the resistance variations of resistance strain gage, nonequilibrium bridge output negative pole
The non-equilibrium output voltage exported between foot OUT- and output cathode foot OUT+ changes.
The low noise amplifier circuit is by the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the first operation amplifier
Device forms；The first power vd of positive pole foot VCC connections 1 of first operational amplifier, the first power supply of power ground pin GND connections are public
GND1 altogether；The cathode input pin IN- of first operational amplifier connects nonequilibrium bridge output negative pole foot by the 4th resistance
OUT-, while cathode input pin IN- connects the output pin OUT of the first operational amplifier by the 5th resistance；First operation amplifier
The anode input pin IN+ of device connects nonequilibrium bridge output cathode foot OUT+ by the 6th resistance, while anode input pin IN+ leads to
It crosses the 7th resistance and connects the first power supply publicly GND1；The mould of output pin OUT the first controllers of connection of first operational amplifier
Number conversion foot AD1；The subtraction circuit that first operational amplifier composition is powered by single supply, the first operational amplifier is that low noise is low
Power operational amplifier；The model of first operational amplifier is INA2332.
The display circuit is made of liquid crystal display, the first triode, the 8th resistance, the power input of liquid crystal display
The first power vd of foot VCC connections 1, the first power supply of power ground pin GND connections publicly GND1；Register selection foot RS connections first
The output pin OUT1 of controller, the output pin OUT2 of read-write foot R/W the first controllers of connection enable foot EN connections first and control
The input and output foot IO0-IO7 of the output pin OUT3 of device processed, data pin DB0-DB7 the first controller of connection, backlight anode foot
The first power vd of LED+ connections 1, the emitter of backlight cathode foot LED- the first triodes of connection；The base stage of first triode passes through
8th resistance connects the output pin OUT4 of the first controller, and the collector of the first triode connects the first power supply publicly GND1.
The warning circuit is made of the 9th resistance, indicator light, buzzer；First power vd 1 by the 9th resistance, refer to
Show that lamp connects the output pin OUT5 of the first controller；First power vd 1 connects the output pin of the first controller by buzzer
OUT6。
The storage circuit, by MICRO SD cards, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance group
Into；MICRO SD cards are connected by SPI with the first controller；The output of chip select pin CS the first controllers of connection of MICRO SD cards
Foot OUT7, while chip select pin CS connects the first power vd 1 by the tenth resistance；The data input pin DI connections of MICRO SD cards
One controller MOSI foot MOSI, while the first power vd 1 is connected by the 11st resistance；The clock foot CLK of MICRO SD cards connects
The SCLK foot SCLK of the first controller are met, while the first power vd 1 is connected by the 12nd resistance；The data of MICRO SD cards are defeated
Go out the MISO foot MISO of foot DO the first controllers of connection, while the first power vd 1 is connected by the 13rd resistance；MICRO SD cards
The first power vd of power input foot VCC connections 1, the first power supply of power ground pin GND connections publicly GND1.
The invention has the advantages that a kind of train wheel failure real-time monitoring device, monitoring device is mounted in locomotive
Portion, resistance strain gage are pasted and fixed on the spoke of train wheel；Resistance strain gage dynamic monitoring train wheel tread and rail
Contact force, after nonequilibrium bridge circuit and low noise amplifier circuit enhanced processing, controller is sent to be analyzed, is handled,
Display and storage；When wheel tread stripping is transfinited, wheel pair and the impact force of rail is caused to transfinite, spoke deformation is caused to be transfinited,
After controller detects the shelled tread to transfinite by resistance strain gage, alarm engineer it can be examined later simultaneously
It repaiies, ensures locomotive driving safety；The data of storage can also be used as the valid data of train wheel health control.
Description of the drawings
Fig. 1 is a kind of system structure block diagram of train wheel failure real-time monitoring device.
Fig. 2 is a kind of circuit diagram of train wheel failure real-time monitoring device.
Fig. 3 is a kind of main program flow chart of train wheel failure real-time monitoring device.
Specific embodiment
With reference to attached drawing and example, the present invention is further described as follows.
As shown in Figure 1, a kind of train wheel failure real-time monitoring device, by power circuit (1), controller（2）, voltage base
Quasi- circuit（3）, resistance strain gage（4）, nonequilibrium bridge circuit（5）, low noise amplifier circuit（6）, display circuit（7）, alarm
Circuit（8）, storage circuit（9）Composition；Monitoring device is mounted on intra-locomotive, resistance strain gage（4）It is pasted and fixed on locomotive wheel
To spoke on；Resistance strain gage（4）The contact force of dynamic monitoring train wheel tread and rail passes through nonequilibrium bridge circuit
（5）And low noise amplifier circuit（6）After enhanced processing, controller is sent（2）It analyzed, handled, shown and is stored；When wheel is to stepping on
Face is removed when transfiniting, and wheel pair and the impact force of rail is caused to transfinite, and spoke deformation is caused to be transfinited, controller（2）It should by resistance
Become piece（4）After detecting the shelled tread to transfinite, it alarm engineer can be overhauled later simultaneously, ensure motor supply shop
Sail safety；The data of storage can also be used as the valid data of train wheel health control.
As shown in Fig. 2, the power circuit (1) is made of the first DC/DC modules U1；The power supply of first DC/DC modules U1
Input anode foot VIN+ connection locomotive 24V positive poles；Power input cathode foot VIN- connection locomotive 24V power cathodes, power supply
Output cathode foot VOUT exports the first power vd 1, and power supply output negative pole foot GND exports the first power supply publicly GND1；Power supply electricity
Road (1) supply controller（2）, voltage reference circuit（3）, low noise amplifier circuit（6）, display circuit（7）, warning circuit（8）、
Storage circuit（9）Working power.
The voltage reference circuit（3）It is made of first voltage fiducial chip U2；The voltage of first voltage fiducial chip U2
The first power vd of input pin VIN connections 1；Public lower margin connects the first power supply publicly GND1；Voltage reference output pin VREF is defeated
Go out first voltage benchmark VREF1；First voltage benchmark VREF1 supplies nonequilibrium bridge circuit（5）And controller（2）As voltage base
Standard uses.
The controller（2）It is made of the first controller U4；The first electricity of positive pole foot VCC connections of first controller U4
The first power supply of source VD1, power ground pin GND connection publicly GND1；The AD conversion reference voltage input pin of first controller U4 connects
Meet first voltage benchmark VREF1.
The nonequilibrium bridge circuit（5）It is made of first resistor R1, second resistance R2,3rd resistor R3；First resistor
R1, second resistance R2,3rd resistor R3 and resistance strain gage（4）Form nonequilibrium bridge；The supply pin VCC of nonequilibrium bridge connects
Meet first voltage benchmark VREF1；The first power supply of public lower margin GND connections of nonequilibrium bridge publicly GND1；First resistor R1
It is connected between the supply pin VCC of nonequilibrium bridge and output cathode foot OUT+；Second resistance R2 is connected to nonequilibrium bridge
Between output cathode foot OUT+ and public lower margin GND；3rd resistor R3 be connected to nonequilibrium bridge output negative pole foot OUT- and
Between public lower margin GND；Resistance strain gage（4）It is connected between the supply pin VCC of nonequilibrium bridge and output negative pole foot OUT-；
When wheel tread is contacted with rail, cause wheel to spoke and resistance strain gage（4）During generation stress deformation, resistance strain gage（4）
Resistance variations, exported between nonequilibrium bridge output negative pole foot OUT- and output cathode foot OUT+ non-equilibrium output voltage hair
Changing.
The low noise amplifier circuit（6）By the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7,
One operational amplifier U3 is formed；The first power vd of positive pole foot VCC connections 1 of first operational amplifier U3, power ground pin GND
Connect the first power supply publicly GND1；The cathode input pin IN- of first operational amplifier U3 is non-flat by the 4th resistance R4 connections
Weigh electric bridge output negative pole foot OUT-, while cathode input pin IN- passes through the defeated of the 5th resistance R5 the first operational amplifiers of connection U3
Go out foot OUT；The anode input pin IN+ of first operational amplifier U3 passes through the 6th resistance R6 connection nonequilibrium bridge output cathode feet
OUT+, while anode input pin IN+ passes through the 7th the first power supply of resistance R7 connections publicly GND1；First operational amplifier U3's
The analog-to-digital conversion foot AD1 of output pin OUT the first controllers of connection U4；First operational amplifier U3 compositions subtracting by single supply power supply
Method circuit, the first operational amplifier U3 are low noise low power operational amplifiers.
The display circuit（7）It is made of liquid crystal display LCD1, the first triode Q1, the 8th resistance R8, liquid crystal display
The first power vd of power input foot VCC connections 1 of device LCD1, the first power supply of power ground pin GND connections publicly GND1；Register
Select the output pin OUT1 of foot RS the first controllers of connection U4, the output pin of read-write foot R/W the first controllers of connection U4
OUT2 enables the output pin OUT3 of foot EN the first controllers of connection U4, and data pin DB0-DB7 the first controllers of connection U4's is defeated
Enter output pin IO0-IO7, the first power vd of backlight anode foot LED+ connections 1, backlight cathode foot LED- the first triodes of connection Q1
Emitter；The base stage of first triode Q1 is by the output pin OUT4 of the 8th resistance R8 the first controllers of connection U4, and the one or three
The collector of pole pipe Q1 connects the first power supply publicly GND1.
The warning circuit（8）, it is made of the 9th resistance R9, indicator light LED1, buzzer HA1；First power vd 1 passes through
The output pin OUT5 of 9th resistance R9, indicator light LED1 the first controllers of connection U4；First power vd 1 is connected by buzzer HA1
Meet the output pin OUT6 of the first controller U4.
The storage circuit（9）, by MICRO SD cards U5, the tenth resistance R10, the 11st resistance R11, the 12nd resistance
R12, the 13rd resistance R13 are formed；MICRO SD cards U5 is connected by SPI with the first controller U4；The piece of MICRO SD cards U5
The output pin OUT7 of foot CS the first controllers of connection U4 is selected, while chip select pin CS passes through the tenth resistance R10 the first power supplys of connection
VD1；Data input pin DI connection the first controller U4MOSI foot MOSI of MICRO SD cards U5, while pass through the 11st resistance
The first power vd of R11 connections 1；The SCLK foot SCLK of clock foot CLK the first controllers of connection U4 of MICRO SD cards U5 lead to simultaneously
Cross the 12nd the first power vd of resistance R12 connections 1；Data output pin DO the first controllers of connection U4's of MICRO SD cards U5
MISO foot MISO, while pass through the 13rd the first power vd of resistance R13 connections 1；The power input foot VCC of MICRO SD cards U5 connects
Connect the first power vd 1, the first power supply of power ground pin GND connections publicly GND1.
As shown in figure 3, be a kind of main program flow chart of train wheel failure real-time monitoring device, main flow work step
Specifically：
Step 1, apparatus system initialization；
Step 2, by resistance strain gage collection wheel to deformation electrical signal data；
Step 3 carries out scale conversion, data processing, storage；
Step 4, differentiates whether wheel transfinites to deformation data, if branching to step 5, just goes to step six if not；
Step 5 carries out sound-light alarm processing；
Step 6 goes to step two.
It should be pointed out that for the present invention by absolutely proving, can also have a variety of conversion and modified implementation
Scheme, it is not limited to which the specific example of the above embodiment, examples detailed above is as just explanation of the invention rather than limits
System, in short, which protection scope of the present invention obviously convert or replace to those skilled in the art including
Generation and remodeling.
Claims (1)
1. a kind of train wheel failure real-time monitoring device, by power circuit, controller, low noise amplifier circuit, display circuit,
Warning circuit, storage circuit composition；It is characterized in that
Further include voltage reference circuit, resistance strain gage, nonequilibrium bridge circuit；
Monitoring device is mounted on intra-locomotive, and resistance strain gage is pasted and fixed on the spoke of train wheel；Resistance strain gage moves
State monitors the contact force of train wheel tread and rail, passes through nonequilibrium bridge circuit and low noise amplifier circuit enhanced processing
Afterwards, controller sent to be analyzed, handled, shown and stored；When wheel tread stripping is transfinited, cause impact of the wheel pair with rail
Power transfinites, and spoke deformation is caused to be transfinited, can same alarm after controller detects the shelled tread to transfinite by resistance strain gage
Prompting engineer is overhauled later, ensures locomotive driving safety；The data of storage can also be used as train wheel health
The valid data of management；
The voltage reference circuit is made of first voltage fiducial chip；The control source foot VIN of first voltage fiducial chip connects
Connect the first power vd 1；Public lower margin connects the first power supply publicly GND1；Voltage reference output pin VREF exports first voltage base
Quasi- VREF1；First voltage benchmark VREF1 is used for nonequilibrium bridge circuit and controller as voltage reference；
The controller is made of the first controller；The AD conversion reference voltage input pin connection first voltage base of first controller
Quasi- VREF1；
The nonequilibrium bridge circuit is made of first resistor, second resistance, 3rd resistor；First resistor, second resistance, the 3rd
Resistance and resistance strain gage composition nonequilibrium bridge；The supply pin VCC connection first voltage benchmark VREF1 of nonequilibrium bridge；It is non-
The first power supply of public lower margin GND connections of balanced bridge publicly GND1；First resistor is connected to the supply pin of nonequilibrium bridge
Between VCC and output cathode foot OUT+；Second resistance is connected to the output cathode foot OUT+ and public lower margin GND of nonequilibrium bridge
Between；3rd resistor is connected between the output negative pole foot OUT- of nonequilibrium bridge and public lower margin GND；Resistance strain gage connects
Between the supply pin VCC of nonequilibrium bridge and output negative pole foot OUT-；When wheel tread is contacted with rail, cause wheel to spoke
When stress deformation occurs with resistance strain gage, the resistance variations of resistance strain gage, nonequilibrium bridge output negative pole foot OUT- and defeated
Go out the non-equilibrium output voltage exported between anode foot OUT+ to change；
The low noise amplifier circuit is by the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the first operational amplifier group
Into；The first power vd of positive pole foot VCC connections 1 of first operational amplifier, the first power supply of power ground pin GND connections is publicly
GND1；The cathode input pin IN- of first operational amplifier connects nonequilibrium bridge output negative pole foot OUT- by the 4th resistance, together
When cathode input pin IN- pass through the 5th resistance connect the first operational amplifier output pin OUT；The anode of first operational amplifier
Input pin IN+ connects nonequilibrium bridge output cathode foot OUT+ by the 6th resistance, while anode input pin IN+ passes through the 7th electricity
Resistance connects the first power supply publicly GND1；The analog-to-digital conversion foot of output pin OUT the first controllers of connection of first operational amplifier
AD1；The subtraction circuit that first operational amplifier composition is powered by single supply, the first operational amplifier is low noise low-power computing
Amplifier；
The display circuit is made of liquid crystal display, the first triode, the 8th resistance, the power input foot of liquid crystal display
The first power vd of VCC connections 1, the first power supply of power ground pin GND connections publicly GND1；Register selection foot RS connections first are controlled
The output pin OUT1 of device processed, the output pin OUT2 of read-write foot R/W the first controllers of connection enable foot EN connections first and control
The input and output foot IO0-IO7 of the output pin OUT3 of device, data pin DB0-DB7 the first controller of connection, backlight anode foot LED
The first power vd 1 of+connection, the emitter of backlight cathode foot LED- the first triodes of connection；The base stage of first triode passes through
Eight resistance connect the output pin OUT4 of the first controller, and the collector of the first triode connects the first power supply publicly GND1；
The storage circuit is made of MICRO SD cards, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance；
MICRO SD cards are connected by SPI with the first controller；The output pin of chip select pin CS the first controllers of connection of MICRO SD cards
OUT7, while chip select pin CS connects the first power vd 1 by the tenth resistance；The data input pin DI connections first of MICRO SD cards
The SPI hosts output slave input pin MOSI of controller, while the first power vd 1 is connected by the 11st resistance；MICRO SD
The SPI clock foot SCLK of clock foot CLK the first controllers of connection of card, while the first power vd 1 is connected by the 12nd resistance；
The SPI hosts input slave output pin MISO of data output pin DO the first controllers of connection of MICRO SD cards, while pass through the
13 resistance connect the first power vd 1；The first power vd of power input foot VCC connections 1 of MICRO SD cards, power ground pin GND
Connect the first power supply publicly GND1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610988873.7A CN106428110B (en) | 2016-11-10 | 2016-11-10 | A kind of train wheel failure real-time monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610988873.7A CN106428110B (en) | 2016-11-10 | 2016-11-10 | A kind of train wheel failure real-time monitoring device |
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| Publication Number | Publication Date |
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| CN106428110A CN106428110A (en) | 2017-02-22 |
| CN106428110B true CN106428110B (en) | 2018-06-05 |
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| CN106950452A (en) * | 2017-05-04 | 2017-07-14 | 湖南工业大学 | A kind of locomotive high-voltage power network electric energy quality on-line monitoring device |
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| CN2378258Y (en) * | 1999-07-22 | 2000-05-17 | 郑州铁路局郑州科学技术研究所 | Railway wheel flat scar signal collecting device |
| US9114816B2 (en) * | 2009-02-09 | 2015-08-25 | General Electric Company | Method and system for using location information in conjunction with recorded operating information for a railroad train |
| JP5168741B2 (en) * | 2009-05-13 | 2013-03-27 | 株式会社デンソー | In-vehicle display device |
| CN104848897B (en) * | 2015-05-20 | 2017-04-26 | 湖南工业大学 | Railway vehicle wheel set bearing press-mounting curve recording device |
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Granted publication date: 20180605 Termination date: 20181110 |