CN107036583A - A kind of measurement car monitoring modular for tunnel subsidence monitoring system - Google Patents
A kind of measurement car monitoring modular for tunnel subsidence monitoring system Download PDFInfo
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- CN107036583A CN107036583A CN201710455070.XA CN201710455070A CN107036583A CN 107036583 A CN107036583 A CN 107036583A CN 201710455070 A CN201710455070 A CN 201710455070A CN 107036583 A CN107036583 A CN 107036583A
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- measurement car
- car
- measurement
- remote receiver
- electric pulse
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention discloses a kind of measurement car monitoring modular for tunnel subsidence monitoring system, for the motion for the measurement car for monitoring the adherent operation in inclinometer pipe in tunnel subsidence monitoring system, the wheel of the measurement car is arranged on the measurement car by pre-compressing device；Including single-chip microcomputer, the infrared transmitter being fixed on the measurement car, and infrared remote receiver；The infrared transmitter is used to send electric pulse；The wheel of the measurement car rotates a circle；The infrared remote receiver receives the electric pulse that once infrared transmitter is sent；The electric pulse that the single-chip microcomputer is received to the infrared remote receiver is counted, and obtains the count value of the electric pulse, and obtain position of the measurement car in the inclinometer pipe according to the count value of the electric pulse.
Description
Technical field
The present invention relates to a kind of measurement car monitoring modular for tunnel subsidence monitoring system of engineering construction field.
Background technology
Shield-bored tunnels are embedded in below ground as other hypogee structures, its tunnel internal temperature, humidity with
Ground is different and little with seasonal variations.During subway tunnel normal operation, train operation density is high, the work that train is triggered
Fill in wind, vibration all can produce influence to structure and monitoring apparatus, along with the laws and regulations of Shield-bored tunnels management are to tunnel
Road internal mechanical is installed, line arrangement has strict regulation, and these all propose unique requirements to Shield-bored tunnels monitoring.
For the monitoring of Shield-bored tunnels Longitudinal Settlement, mainly there are following methods：
Static level monitoring can realize a certain degree of automation and digitlization, in tunnel structure sedimentation and deformation Risk Monitoring
In be commonly used, but its equipment instrument is larger, and inconvenience is installed, and is not suitable for the discrepancy in elevation and is changed greatly section；Can be by temperature, gas
The influence of the factors such as pressure, gravity anomaly.
The artificial measurement of the level is widely used, and method is ripe, and instrument price is cheap.But need staff to hold instrument entrance
Tunnel, therefore the round-the-clock monitoring in operation phase tunnel can not be realized, it is only used for the tunnel of non-operation state, and artificial level
Measurement is time-consuming to take a lot of work, inefficiency.
Electric horizon rule is a kind of precision, resolving power is high and sensor that stability is good, easy for installation, in Metro
In use, not only can guarantee that the normal operation of subway, and Real-time Monitoring Data and change curve can be provided incessantly.But
Its disposable input is high, and recycling rate of waterused is low.
The measurement of tunnel subsidence can be carried out using the measurement car under operation in inclinometer pipe at present, but still measure appearance of vehicle
Easily block or block in inclinometer pipe and turn, how to prevent above-mentioned situation from there is no report at present.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of survey for tunnel subsidence monitoring system
Car monitoring modular is measured, its measurement car that can monitor adherent operation in inclinometer pipe occurs to block or stuck failure.
Realizing a kind of technical scheme of above-mentioned purpose is：A kind of measurement car for tunnel subsidence monitoring system monitors mould
Block, the motion of the measurement car for monitoring the adherent operation in inclinometer pipe in tunnel subsidence monitoring system, the car of the measurement car
Wheel is arranged on the measurement car by pre-compressing device；
Including single-chip microcomputer, the infrared transmitter being fixed on the measurement car, and infrared remote receiver；The infrared emission
Device is used to send electric pulse；The wheel of the measurement car rotates a circle；The infrared remote receiver receives the once infrared emission
The electric pulse that device is sent；The electric pulse that the single-chip microcomputer is received to the infrared remote receiver is counted, and obtains the electric pulse
Count value, and obtain the position of the measurement car in the inclinometer pipe according to the count value of the electric pulse.
Further, the measurement car is provided with some groups of wheels, and wheel described in every group is around the circle of the measurement car
Week is in cross arrangement, and the infrared transmitter and the infrared remote receiver are fixed on and any one wheel pair in the measurement car
On the pre-compressing device answered, the wheel is provided with the circular hole communicated for the infrared transmitter and the infrared remote receiver.
Further, Schmidt's reshaper is provided between the infrared remote receiver and the single-chip microcomputer.
Further, the single-chip microcomputer is provided with timer conter.
Further, the single-chip microcomputer is provided with the crystal oscillator being connected with the timer conter.
A kind of technical scheme of measurement car monitoring modular for tunnel subsidence monitoring system of the present invention is employed, is used for
The motion of the measurement car of the adherent operation in inclinometer pipe in tunnel subsidence monitoring system is monitored, the wheel of the measurement car passes through pre-
Pressing device is arranged on the measurement car；Including being fixed on the single-chip microcomputer measured on car, infrared transmitter, and it is infrared
Receiver；The infrared transmitter is used to send electric pulse；The wheel of the measurement car rotates a circle；The infrared remote receiver connects
Receive the electric pulse that once infrared transmitter is sent；The electric pulse that the single-chip microcomputer is received to the infrared remote receiver is counted
Number, obtains the count value of the electric pulse, and obtain the measurement car in the inclinometer pipe according to the count value of the electric pulse
In position.Its technique effect：Its measurement car that can monitor adherent operation in inclinometer pipe occurs to block or stuck failure.
Brief description of the drawings
Fig. 1 installs front view for the inclinometer pipe of tunnel subsidence monitoring system with measurement car.
Fig. 2 installs left view for the inclinometer pipe of tunnel subsidence monitoring system with measurement car.
Fig. 3 is the structure chart of tunnel subsidence monitoring system.
Fig. 4 is the first reference source circuit and the second reference source circuit connection diagram in tunnel subsidence monitoring system.
Fig. 5 is used for the schematic diagram for measuring car monitoring modular of tunnel subsidence monitoring system for a kind of of the present invention.
Fig. 6 is a kind of measurement infrared transmitter of car monitoring modular for tunnel subsidence monitoring system of the present invention and red
The scheme of installation of outer receiver.
Embodiment
Referring to Fig. 1, the present inventor is in order to be able to preferably understand technical scheme, lead to below
Specifically embodiment is crossed, and is described in detail with reference to accompanying drawing：
Tunnel subsidence monitoring system includes the inclinometer pipe being sequentially connected along the axial direction in tunnel on the tunnel inner wall
300, and can in inclinometer pipe 300 adherent operation measurement car 400.It is in cross arrangement that some groups are disposed with measurement car 400
Wheel 401, make measurement car 400 and inclinometer pipe 300 adherent, reduce measurement car 400 mechanical oscillation.Wheel 401 passes through precompressed
Tight device 402 is arranged on measurement car 400.
Measure car 400 and be provided with the first reference source circuit 1a, the second reference source circuit 1b, the first obliquity sensor 2, second
Obliquity sensor 3, difference amplifier 4, analog-digital converter 5, ZigBee emitters 6, infrared transmitter 7, infrared remote receiver 8,
Schmidt's reshaper 9, single-chip microcomputer 10, voltage controlled oscillator 11, stepper motor driver 12 and for the constant revolution of driving moment 401
Stepper motor 13.
Wherein, the first reference source circuit 1a connects the first obliquity sensor 2, the power end of the second obliquity sensor 3 simultaneously,
Stable power supply is provided for the first obliquity sensor 2, the second obliquity sensor 3.First reference source circuit 1a is also connected with mould
The reference power source end of number converter 5 and stepper motor driver 12, is that analog-digital converter 5 and stepper motor driver 12 are provided
Stable reference voltage.
Output error response and the stability of power supply due to the first obliquity sensor 2 and the second obliquity sensor 3
It is extremely necessary with close association, therefore using the first reference source circuit 1a.
The first reference source circuit 1a selects REF195 benchmark source chips in the present embodiment, and REF195 benchmark source chip can be carried
For being up to 30 milliamperes and with the premium properties of 2ppm/ DEG C of temperature drift.
First obliquity sensor 2 and the second obliquity sensor 3 use SCA100T type double high-precision obliquity sensors, its
Purpose is that, in order to obtain difference inclination data, the mechanical oscillation effectively suppressed due to measuring car 400 are caused the first inclination angle by this
The common-mode noise that the obliquity sensor 3 of sensor 2 and second is produced.
Its principle is：It is stacked on top of one another after first obliquity sensor 2 and the alignment of the second obliquity sensor 3 to install, make first to incline
The plane that 2 and second obliquity sensor of angle transducer 3 respective X-axis and Y-axis are constituted supports or opposes.First obliquity sensor 2 and second
The X-axis of obliquity sensor 3 is parallel but in opposite direction with the direction of displacement for measuring car 400, the first obliquity sensor 2 and the second inclination angle
The Y-axis of sensor 3 is parallel with the direction of vibration for measuring car 400 and direction is identical.First obliquity sensor 2 is generated and measurement car
400 in corresponding first vibration signal of the internal vibration of inclinometer pipe 300, and corresponding in the intrinsic displacement of inclinometer pipe 300 with measurement car 400
First displacement signal.Second obliquity sensor 3, which generates to vibrate in the internal vibration of inclinometer pipe 300 corresponding second with measurement car 400, to be believed
Number, and with measurement car 400 in the corresponding second displacement signal of the intrinsic displacement of inclinometer pipe 300.
Therefore, the first vibration signal and the second vibration signal are a pair of common-mode signals, after amplifying through difference amplifier 4, should
Common-mode signal is cancelled.Similarly, since the first displacement signal and second displacement signal are a pair of difference mode signals, therefore through difference
The analog signal of the output end final output of amplifier 4 is the superposition of the first displacement signal and second displacement signal.
10 μ Fs of the output end of difference amplifier 4 provided with ground connection noise reduction electric capacity CF, to reach further suppression
The purpose of low-frequency noise, because the primary spectrum of the measurement mechanical oscillation of car 400 is concentrated in low-frequency range.Difference amplifier 4
The analog signal of output is fed into the input of analog-digital converter 5 after being filtered through noise reduction electric capacity CF.Analog-digital converter 5 is 16
Analog-digital converter.The analog signal of the output of difference amplifier 4 is admitted to after being converted to data signal through analog-digital converter 5
ZigBee emitters 6 are CC2530 type ZigBee sensors in ZigBee emitters 6, the present embodiment, complete inclination data
Collection.
The reason for the present embodiment does not use 12 analog-to-digital conversion modules built in ZigBee emitters 6 in the present embodiment exists
It is inadequate in its precision.
Wherein, between the first obliquity sensor 2 and the INA+ ends of difference amplifier 4, the second obliquity sensor 3 is put with difference
Two the first operational amplifiers 19 in first operational amplifier 19, the present embodiment are respectively provided between the INA- ends of big device 4
Be OPA184 operational amplifiers, there is low noise, single supply to power for it, the function of rail-to-rail input and output, the purpose is to
Single supply expands the first displacement signal, the first vibration signal, the second vibration signal and second displacement as far as possible in the case of powering
The dynamic range of signal transacting.A=2 in the present embodiment, to ensure the dynamic range for the analog signal that difference amplifier 4 is exported.
Difference amplifier 4 is high precision instrument amplifier AD620 in the present embodiment.
Difference amplifier 4 is powered using single supply, therefore its reference power source end end needs one VCC/2 Low ESRs ginseng of access
Examine source.
Second reference source circuit 1b uses ADR4550 benchmark source chips, and its output voltage is 5V, with extremely excellent low
Noise, Low Drift Temperature performance, are that analog-digital converter 5 provides supply voltage.
Analog-digital converter 5 is AD7988 analog-digital converters in the present embodiment, and analog-digital converter 5 is except needing high-precision base
Outside quasi- voltage, its supply voltage needs VCC/2 supply voltage, i.e., 2.5 volt to power；And difference amplifier 4 is also required to one
2.5 Fu Zhongdiancankaoyuan of high stable.In order to produce in 2.5 volts of power supplies of high stable, the present embodiment in the second a reference source
Circuit 1b output end is provided with the second operational amplifier 18, and the second operational amplifier 18 is OP184 operational amplifiers, the second fortune
Calculate amplifier 18 and connect the power end of analog-digital converter 5 and the reference power source end of difference amplifier 4, the second operational amplifier simultaneously
18 follow the second reference source circuit 1b through partial pressure to produce a reference source, obtained 2.5 Fu Dizukang electricity Ya Yuan of high accuracy, are respectively
Analog-digital converter 5 provides power supply, is that difference amplifier 4 provides midpoint reference source.
Single-chip microcomputer 10 connects the voltage-controlled end of voltage controlled oscillator 11, the output end connection driving stepper motor of voltage controlled oscillator 11
The clock end of device 12, the stepper motor 13 of the constant revolution of wheel 401 of the connection control measurement car 400 of stepper motor driver 12.
The purpose for setting voltage controlled oscillator 11 is the driving source of control measurement car 400, it is ensured that the smooth starting and operation of stepper motor 13.
In general, the general not preferably less than 40kHz of the No Load Start frequency of stepper motor 13, otherwise can produce measurement car 400 and vibrate.Step
The startup control frequency of stepper motor 13 is by low to setting stable state；Before stopping, control frequency is by stable state step-down.The control of stepper motor 13
The change of frequency processed should follow exponential type change, and the time of usual acceleration and deceleration is not preferably less than 300 milliseconds, otherwise can produce measurement car
400 step-outs or shake；The measurement car 400 when stepper motor 13 is run can be reduced using micro-stepping control to shake；Measure car 400 at a high speed
Operating needs to maintain certain voltage, otherwise can produce the measurement stall of car 400.
Using function integrated circuit LM566 occurs for the voltage controlled oscillator 11 in the present embodiment.Integrated circuit occurs for function
LM566 is a kind of voltage-controlled function generator, can produce the square wave or triangular signal from low frequency to 1MHz, voltage controlled oscillator 11
The frequency change of output signal is associated with the amplitude of the voltage at voltage-controlled end, thus only need to be in the voltage-controlled end of voltage controlled oscillator 11 and list
A RC integrator 17 is accessed between the output end of piece machine 10 and a high level, RC integrators are sent into RC integrators 17
17 electric capacity C undergo one since zero level and exponentially increase, it is final be a constant level signal process,
Equally, the angular displacement pulse that stepper motor driver 12 is exported experienced since extremely low frequency, exponentially increases, final
Reach the process of stable state.
Conversely, after the input high level of RC integrators 17 is removed, the voltage on the electric capacity of RC integrators 17 will be by finger
Number rule declines, until being zero, so that the frequency for the angular displacement pulse that stepper motor driver 12 is exported is advised by stable state by index
Rule is successively decreased up to being zero, the thus control of the extremely simple acceleration and deceleration chopping frequency for being reliably achieved stepper motor 13.
In the present embodiment, the position that measurement car 400 is moved along inclinometer pipe 300 is passed with the first obliquity sensor 2, the second inclination angle
The data of sensor 3 must comply with strict one-to-one relation, thus, and the movement rate of measurement car 400 must be constant.It is logical
Cross and drive measurement car 400 to move using the stepper motor 13 that is controlled by stepper motor driver 12 to can be achieved.Stepper motor 13
Rotating speed be the frequency of the angular displacement pulse exported by stepper motor driver 12 is determined, also, the rotor of stepper motor 13
Corner can be with precisely subdivided, as long as then 13 unit interval of stepper motor internal rotor turns over angle to the frequency stabilization of angular displacement pulse
It is certain.The frequency of angular displacement pulse is controlled by the crystal oscillator 101 on single-chip microcomputer 10, it is assumed that stepper motor 13
Subdivision rate be 32, the frequency of angular displacement pulse is 5.0kHz, then the rotor of stepper motor 13 rotates one week needs, 11540 angles
Dfisplacement pulse.
The a diameter of 30mm of wheel 401 of car 400 is measured in the present embodiment, it is L that wheel 401, which transports the distance circled,ZC, measurement
The movement rate of car 400 is designed as 0.3m/s, therefore the rotating speed of the rotor of stepper motor 13 is 3.238r/s, then stepper motor 13
Rotor should add the angular displacement pulse that a frequency is 31.30kHz.
The frequency of oscillation of crystal oscillator 101 takes 40MHz in the present embodiment, the vibration output of crystal oscillator 101 as single-chip microcomputer 10 when
Clock, the frequency of the angular displacement pulse needed for stepper motor 13 is 31.30kHz, is obtained by the timer conter built in single-chip microcomputer 10
.
Single-chip microcomputer 10 is STC12C5628AD single-chip microcomputers in the present embodiment.
It is assumed that before stepper motor 13 starts, the pressure drop U of the electric capacity C on RC integrators 17CIt is zero, stepper motor 13 starts
Afterwards, single-chip microcomputer 10 sends a step signal U to the electric capacity C of RC integrators 17JY, the pressure drop U of the electric capacity C on RC integrators 17C
Start exponentially to be incremented by, approximately pass through after 5-6 τ cycle, the electric capacity C change in pressure drop on RC integrators 17 is UJY, stepping
Motor driver 12 enters stable state.Wherein τ=1/RC, voltage controlled oscillator 11 can be realized from extremely low to 10MHz frequency copped wave pulses
Output, the frequency of copped wave pulse controlled by the voltage-controlled end of voltage controlled oscillator 11, and linear good.At the voltage-controlled end of voltage controlled oscillator 11
When adding a positive linear ramp, the frequency of the copped wave pulse of the output end of voltage controlled oscillator 11 output will occur by it is low to
High repetitive process, similarly, by the pressure drop U of the electric capacity on RC integrators 17CFrom zero starting, exponentially be incremented by up to reaching
To the voltage U of stable stateC, when being added to 11 voltage-controlled end of voltage controlled oscillator, the copped wave pulse of the output end output of voltage controlled oscillator 11
Frequency will undergo a process for increasing and being finally reached stable frequency by zero, exponentially.Adjust RC integrators 17
The τ cycles, can change voltage controlled oscillator 11 output copped wave pulse frequency as zero reach stable state needed for time, so as to light
Change places and meet the functional requirement of the diagonal displacement pulse of stepper motor 13.Therefore, the resistance R of RC integrators 17 is variable resistor.
Single-chip microcomputer 10 sends 5V step signal U to the electric capacity C on RC integrators 17JY, due to RC integrators 17
Electric capacity C has little time charging, a phase inverter 16 is concatenated between RC integrators 17 and the voltage-controlled end of voltage controlled oscillator 11, after paraphase
The voltage-controlled end of feed-in voltage controlled oscillator 11.The closing control pin of voltage controlled oscillator 11, i.e. DIS pins connect the electricity of ground connection simultaneously
Hold C19, the resistance R10 of the external frequency of oscillation timing resistor pin of voltage controlled oscillator 11, i.e. RT pins connection ground connection.
The frequency of oscillation of voltage controlled oscillator 11 is f0：
In formula：VccIt is 5V for the supply voltage of voltage controlled oscillator 11.
VcoFor the amplitude of the output signal of phase inverter 16, scope is 0~5V.
The copped wave pulse of the output of voltage controlled oscillator 11 by resistance R10, electric capacity C19 and phase inverter 16 output signal width
Value VcoDetermine, the frequency of the copped wave pulse of the output of voltage controlled oscillator 11 by zero increase to 40kHz when because with RC integrators
17 electric capacity C's is constantly electrically charged, and the voltage at the voltage-controlled end of voltage controlled oscillator 11 is declined by damped expoential rule, so as to cause pressure
The frequency of the copped wave pulse of the output of controlled oscillator 11 is exponentially incremented by, until the voltage at the voltage-controlled end of voltage controlled oscillator 11
It is zero, the frequency of the copped wave pulse of the output of voltage controlled oscillator 11 reaches stable state.The output end connection stepping of voltage controlled oscillator 11
Stepper motor driver 12 is THB6128 type stepper motor driver chips in the clock end of motor driver 12, the present embodiment.Step
The output A1 output ends and A2 output ends of stepper motor driver 12, are connected and for the A windings of Driving Stepping Motor 13, stepping electricity
The output B1 output ends and B2 output ends of machine driver 12, are connected and for the B windings of Driving Stepping Motor 13.The electricity of stepping simultaneously
Machine driver 12 connects battery pack.
A kind of measurement car monitoring modular for tunnel subsidence monitoring system of the present invention includes being located on measurement car 400
Infrared transmitter 7, infrared remote receiver 8, Schmidt's reshaper 9 and single-chip microcomputer 10.Pass through infrared transmitter 7 and infrared remote receiver
8, the perception to measurement car 400 position in inclinometer pipe 300, and issuable stuck or stall failure prison can be achieved
Survey.Infrared transmitter 7 and infrared remote receiver 8 are each attached to and any one corresponding pre-tightening apparatus of wheel 401 in measurement car 400
On 402.The circular hole 403 intermittently communicated for infrared transmitter 7 and infrared remote receiver 8 is provided with the wheel 401.Infrared receiver
The connection Schmidt of device 8 reshaper 9, the connection single-chip microcomputer 10 of Schmidt's reshaper 9, single-chip microcomputer 10 passes through 8 pairs of operations of infrared remote receiver
The motion state of measurement car 400 in inclinometer pipe 300 implements monitoring.Its principles illustrated is as follows：In measurement car 400 in inclinometer pipe
When being run in 300, wheel 401 often rotates a circle；Infrared transmitter 7 and infrared remote receiver 8 are once communicated, infrared remote receiver
8 receive the electric pulse that an infrared transmitter 7 is launched, and the electric pulse is fed into single-chip microcomputer 10 after the shaping of Schmidt's reshaper 9
Carry out and count.Because the girth of wheel 401 is constant, therefore calculate multiplying for the count value of electric pulse and the girth of wheel 401
Product just can obtain the distance that measurement car 400 is run in inclinometer pipe 300, thus obtain measuring position of the car 400 in inclinometer pipe 300
Put.The electric pulse also be used to knowing the motion state of measurement car 400, constantly accumulate when the run duration of measurement car 400 but
When the count value of electric pulse keeps constant, you can obtain measurement car 400 and blocked in inclinometer pipe 300.The counting of electric pulse
Value and the run duration of measurement car 400 are sent to neighbouring ZigBee also by single-chip microcomputer 10 and ZigBee emitters 6
Relay servomotor.
Advantage using infrared transmitter 7 and infrared remote receiver 8 is：Need not produce for example needs using during photoelectric tube mode
The secondary light source wanted, and effectively shield due to the maloperation that visible interference of stray light is produced.
In the present embodiment, infrared transmitter 7 is infrared receiving/transmission diode SE304, infrared remote receiver 8, is PIC14043 red
Outer receiver.When being gone to 8 corresponding position of infrared transmitter 7 and infrared remote receiver the circular hole 403 on wheel 401,
Infrared transmitter 7 produces an electric pulse, after the electric pulse is received by infrared remote receiver 8, by the shaping of Schmidt's reshaper 9,
Single-chip microcomputer 10 is read into, starts the timer conter in single-chip microcomputer 10, to counting for feeding electric pulse, and periodic sampling should
The count value T of electric pulse in timer conterCN1, the count value T of computing electric pulseCN1With the perimeter L of wheel 401ZCProduct just
It can obtain measuring position of the car 400 in inclinometer pipe 300.The also external crystal oscillator 101 of the timer conter of single-chip microcomputer 10, crystal oscillator 101
For XCXO type crystal oscillators.Crystal oscillator 101 is through 215The second clock implementation counting operation obtained after frequency dividing, this second clock and infrared transmitter 7,
The turning collar counting number value of wheel 401 that infrared remote receiver 8 is produced, i.e. the count value T of electric pulseCN1It is one-to-one relation, when
When one one-to-one correspondence occurs destroyed, measurement car 400 is issuable stuck or stall failure, and single-chip microcomputer 10 is alarmed,
So as to realize the monitoring of the measurement motion state of car 400.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (5)
1. a kind of measurement car monitoring modular for tunnel subsidence monitoring system, is being surveyed for monitoring in tunnel subsidence monitoring system
The motion of the measurement car of adherent operation in inclined tube, the wheel of the measurement car is arranged on the measurement car by pre-compressing device
On；It is characterized in that：
Including single-chip microcomputer, the infrared transmitter being fixed on the measurement car, and infrared remote receiver；The infrared transmitter is used
In sending electric pulse；The wheel of the measurement car rotates a circle；The infrared remote receiver receives once the infrared transmitter hair
The electric pulse gone out；The electric pulse that the single-chip microcomputer is received to the infrared remote receiver is counted, and obtains the meter of the electric pulse
Numerical value, and obtain position of the measurement car in the inclinometer pipe according to the count value of the electric pulse.
2. a kind of measurement car monitoring modular for tunnel subsidence monitoring system according to claim 1, it is characterised in that：
The measurement car is provided with some groups of wheels, and circumference of the wheel described in every group around the measurement car is in cross arrangement, described
Infrared transmitter and the infrared remote receiver are fixed on pre-compressing device corresponding with any one wheel in the measurement car,
The wheel is provided with the circular hole communicated for the infrared transmitter and the infrared remote receiver.
3. a kind of measurement car monitoring modular for tunnel subsidence monitoring system according to claim 2, it is characterised in that：
Schmidt's reshaper is provided between the infrared remote receiver and the single-chip microcomputer.
4. a kind of measurement car monitoring modular for tunnel subsidence monitoring system according to claim 1, it is characterised in that：
The single-chip microcomputer is provided with timer conter.
5. a kind of measurement car monitoring modular for tunnel subsidence monitoring system according to claim 4, it is characterised in that：
The single-chip microcomputer is provided with the crystal oscillator being connected with the timer conter.
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| CN205067033U (en) * | 2015-11-06 | 2016-03-02 | 三峡大学 | See in dam and be used to lead automatic traction system of monitoring devices |
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Application publication date: 20170811 |