CN109001052A - A kind of metering system and method for drop hammer deflection meter impact load - Google Patents
A kind of metering system and method for drop hammer deflection meter impact load Download PDFInfo
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- CN109001052A CN109001052A CN201810660006.XA CN201810660006A CN109001052A CN 109001052 A CN109001052 A CN 109001052A CN 201810660006 A CN201810660006 A CN 201810660006A CN 109001052 A CN109001052 A CN 109001052A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The present invention relates to drop hammer deflection meter fields, specifically provide the metering system and method for a kind of drop hammer deflection meter impact load, and the metering system of the impact load includes: substrate；Loading plate, the loading plate are superimposed on right above the substrate；Pressure sensor, multiple pressure sensors are distributed between the upper surface of base plate and the loading plate lower surface；Data acquisition device, the data acquisition device are connected with pressure sensor；And data processing equipment, the data processing equipment are connected by data line with the data acquisition device.The metering device low cost, structure is simple, reusable, and can arbitrarily move, and can move scene use, and the numerical value for guaranteeing that pressure sensor measures is accurate, and then can carry out Accurate Calibration to drop hammer deflection meter.
Description
Technical field
The present invention relates to impact load field of measuring technique, in particular to the metering system and method for a kind of impact load.
Background technique
Road surface bearing capacity is one of the main indicator on road surface, and those skilled in the art generally use drop hammer deflection meter
(FWD) dynamic deflection for measuring road surface, specifically, be equipped with the weight of standard quality in drop hammer deflection meter, weight is from certain
Height is fallen, and impact load when hitting with roadbed or road surface makes roadbed or road surface generate instantaneous deformation, that is, is generated dynamic
State flexure, measures the dynamic deflection, and the load measured using the load transducer of benkelman beams deflectometer, the modulus of resilience on inverse road surface,
Road surface bearing capacity can be obtained.But load transducer is using meeting is inaccurate later over time, thus carrying out calibration is very
It is necessary.
Currently, impact load size is very since the technical level of domestic and international different drop hammer deflection meter producer is irregular
Difficult effectively control, the load deviation road pavement active force difference of drop hammer deflection meter will result in the inclined of measurement pavement deflection value
Difference substantially reduces the accuracy of drop hammer deflection meter measured value.Thus drop hammer deflection meter must be marked within certain period
It is fixed, to determine its actual performance.The load as caused by drop hammer deflection meter is impact load, the calibration of existing impact load
Method and device has:
1. carrying out dynamic calibration using accelerometer, the calibration result error which obtains is big, cannot be to dropping hammer
Formula benkelman beams deflectometer carries out effective Accurate Calibration, so that drop hammer deflection meter accuracy is low, road pavement measurement result deviation is big；
2. benkelman beams deflectometer is returned factory to re-scale, field calibration not can be carried out in this way, it is very inconvenient, and waste of manpower
And the time.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of metering system of drop hammer deflection meter impact load, packet
It includes: substrate；
Substrate；
Loading plate, loading plate are superimposed on above substrate；
Pressure sensor, multiple pressure sensors are distributed between upper surface of base plate and loading plate lower surface；
Data acquisition device, data acquisition device are connected with pressure sensor；With
Data processing equipment, data processing equipment are connected by data line with data acquisition device.
Further, the cross section of loading plate and substrate is identical shape.
Further, the cross section of loading plate and substrate is round；Multiple pressure sensors are equal in a manner of circular array
Cloth.
Further, upper surface of base plate and loading plate lower surface offer the blind round hole of installation pressure sensor.
Further, cable concentrator is installed, cable concentrator is connected with all pressure sensors, and cable concentrator passes through number on substrate
It is connected according to connecting line with data acquisition device.
Further, drop hammer deflection meter includes:
Load transducer, load transducer collect and record drop hammer deflection meter pressure signal；
Control module, control module are connected with load transducer, and control module controls the motion state of drop hammer deflection meter,
And pressure value is converted by load transducer pressure signal collected.
Embodiments herein additionally provides a kind of metering method of drop hammer deflection meter impact load, including following step
It is rapid:
Above-mentioned metering system is placed in experimental tank；
Pressure sensor is initialized；
The pressure signal of data acquisition device acquisition pressure sensor simultaneously handles pressure signal to obtain impact load value, rushes
It hits payload values and is transmitted to data processing equipment；
The control module of drop hammer deflection meter collects and records drop hammer deflection meter pressure signal, and by pressure signal
Processing obtains impact load value；
Data processing equipment averages the impact load value of the pressure sensor of obtained each grade, data processing
Device averages the impact load value of the drop hammer deflection meter of obtained each grade, and establishes the impact of pressure sensor
Equation of linear regression between payload values and the impact load value of drop hammer deflection meter.
Further, experimental tank is provided with road surface, and the upper surface of the loading plate of impact load metering device and road surface exist
Same level.
Further, the pressure signal of data acquisition device acquisition pressure sensor, and pressure signal is handled
Impact load value is transmitted to data processing equipment, specifically includes:
S301: the weight of drop hammer deflection meter is fallen from the height demarcated, and pressure sensor acquires pressure signal, will be surveyed
The pressure signal obtained is transmitted to data acquisition device；Meanwhile the pressure of the control module acquisition load transducer of drop hammer deflection meter
Force signal；
Step S302: data acquisition device is filtered the pressure signal of pressure sensor, and passes through A/D data
Pressure signal is converted pressure value by conversion；
The pressure signal of load transducer is converted pressure value by control module, and as drop hammer deflection meter surveys impact lotus
Load value；
Step S303: data acquisition device carries out addition processing to the pressure value of the multiple pressure sensors acquired every time,
Being added obtained pressure value is the surveyed impact load value of pressure sensor；
Step S304: repeat the above steps S301-S303, obtains the impact load data of three pressure ratings, and data are adopted
Pressure data is transmitted to data processing equipment by acquisition means；The impact load value of drop hammer deflection meter acquisition and recording is input to data
Processing unit.
Further, the impact load data of each grade include: the surveyed impact load value of five groups of pressure sensors and five
The impact load value of group drop hammer deflection meter acquisition and recording.
From the above technical scheme, the embodiment of the present invention has the advantages that
The metering device low cost, structure is simple, reusable, and can arbitrarily move, and can move to scene
It uses, and measures same impact load using multiple pressure sensors, since pressure sensor is uniformly distributed, thus increase
The numerical value that forced area guarantees that pressure sensor measures is accurate, and then can carry out Accurate Calibration to drop hammer deflection meter, improves
The Measurement reliability of the road pavement of benkelman beams deflectometer.
Detailed description of the invention
Only illustratively description and explain the present invention for the following drawings, not delimit the scope of the invention.
Fig. 1 is the drop hammer deflection meter impact load metering system overall structure diagram of the embodiment of the present invention.
Fig. 2 is the pressure sensor arrangement schematic diagram of the embodiment of the present invention.
Fig. 3 is the flow diagram of the drop hammer deflection meter impact load metering method of the embodiment of the present invention.
Fig. 4 is the drop hammer deflection meter impact load metering system usage state diagram of the embodiment of the present invention.
Wherein: 1- substrate, 2- loading plate, 3- pressure sensor, 4- cable concentrator, 5- data connecting line, 6- data acquisition dress
It sets, 7- data line, 8- data processing equipment, 9- weight, 10- bearing plate, 11- bottom plate.
Specific embodiment
In order to which the technical features, objects and effects of invention are more clearly understood, the Detailed description of the invention present invention is now compareed
Specific embodiment, identical label indicates identical part in the various figures.
Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.
To make simplified form, part related to the present invention is only schematically shown in each figure, and does not represent it
Practical structures as product.In addition, so that simplified form is easy to understand, with the portion of identical structure or function in some figures
Part only symbolically depicts one of those, or has only marked one of those.
Herein, "upper", "lower", "front", "rear", "left", "right" etc. are only used for indicating opposite between relevant portion
Positional relationship, and the absolute position of these non-limiting relevant portions.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate significance level and sequence and
Existing premise etc. each other.
Herein, the limitation in " equal ", " identical " etc. and non-critical mathematics and/or geometry meaning also includes
It will be appreciated by those skilled in the art that and the error that the permissions such as makes or uses.Unless otherwise indicated, numerical value model herein
It encloses not only including the entire scope in two endpoint, also includes being contained in several subranges therein.
In order to solve in the prior art to drop hammer deflection meter impact load measure it is costly, measurement inaccuracy technology ask
Topic, as shown in Figure 1, the embodiment provides a kind of metering system of drop hammer deflection meter impact load, the metering system
System includes:
Substrate 1；
Loading plate 2 and pressure sensor 3, loading plate 2 are superimposed on 1 top of substrate, and multiple pressure sensors 3 are distributed in substrate
Between 2 lower surface of 1 upper surface and loading plate；
Data acquisition device 6, data acquisition device 6 are connected with pressure sensor 3；With
Data processing equipment 8, data processing equipment 8 are connected by data line 7 with data acquisition device 6.
The weight of standard quality is installed, weight is fallen from certain altitude, is hit with roadbed or road surface in drop hammer deflection meter
Impact load when hitting makes roadbed or road surface generate instantaneous deformation, i.e. generation dynamic deflection, measures the dynamic deflection, and
Road surface bearing capacity can be obtained in the load measured using the load transducer of benkelman beams deflectometer, the modulus of resilience on inverse road surface.But lotus
Set sensor using after over time can inaccuracy, thus carry out calibration and be very important.And the mark of existing impact load
It is high to determine method and device cost, reusability is poor, and obtained calibration result error is big, cannot have to drop hammer deflection meter
Accurate Calibration is imitated, so that drop hammer deflection meter accuracy is low, road pavement measurement result deviation is big, and benkelman beams deflectometer is returned factory and is then expended
Manpower and time.The metering device low cost of the embodiment of the present application, structure is simple, reusable, and can arbitrarily move,
The metering device can be moved to scene use, and measure same impact load using multiple pressure sensors 3, due to pressure
Force snesor 3 is uniformly distributed, thus increases forced area, and the numerical value for guaranteeing that pressure sensor 3 measures is accurate, and then can be right
Drop hammer deflection meter carries out Accurate Calibration, improves the Measurement reliability of the road pavement of benkelman beams deflectometer.
In above-described embodiment, loading plate 2 is superimposed on the top of substrate 1, top mentioned here can be do not consider tolerance with
Surface in the case of manufacture deviation, it is this superposition make it is capable transmitting more evenly, be not in multiple 3 stress of pressure sensor not
Uniform problem.
The one aspect of the embodiment of the present application, as shown in Fig. 2, pressure sensor 3 is uniformly distributed, but if substrate 1 and holding
The cross-sectional shape of support plate 2 is irregular, then can make 2 discontinuity of loading plate, then impact force suffered by pressure sensor 3
It is unevenly distributed, measured result will be inaccurate, cannot carry out Accurate Calibration, therefore, the reality of the application to benkelman beams deflectometer
It applies in example, it is preferred that the cross section of loading plate 2 is circle, and to be readily transported and using, substrate 1 is set as identical as loading plate 2
Shape, more preferably, substrate 1 is identical with the size of 2 cross section of loading plate.It in this case, is each pressure of guarantee
3 stress of sensor is identical, it is preferred that pressure sensor 3 is evenly distributed in a manner of circular array, since 2 cross section of loading plate is round
Shape, the center of circle of circular array is located exactly on loading plate axial position, 3 stress of pressure sensor each in this way be it is identical,
Impact load suffered by loading plate 2 can accurately be measured.More preferably, 3 quantity of pressure sensor is three, between each other
Angle be 120 °.
In above-described embodiment, pressure sensor 3 is located between 2 lower surface of 1 upper surface of substrate and loading plate, in loading plate 2
When by the impact load effect, if loading plate 2 deviates the surface of substrate 1, pressure sensor 3, cannot by discontinuity
Realize accurate measurement impact load, thus in embodiments herein, 1 upper surface of substrate and 2 lower surface of loading plate offer circle
Shape blind hole, pressure sensor 3 are installed in the blind round hole, on the one hand can be realized the fixation of 3 position of pressure sensor, another
For aspect in by the impact load effect, pressure sensor 3 will not laterally generate displacement, guarantee the precision of measurement.1 He of substrate
Loading plate 2 realizes connection by pressure sensor 3, will not can be carried out lateral opposite offset therebetween, guarantees that each pressure passes
Sensor 3 can stress.Specifically, pressure sensor 3 be installed on 2 lower surface of 1 upper surface of substrate and loading plate blind round hole it
Between.
Further, in order to realize that the data of multiple pressure sensors 3 acquire, data acquisition device 6 and pressure sensing
Device 3 is connected, but when pressure sensor 3 is a fairly large number of, data acquisition device 6 will simultaneously with all pressure sensors 3
It is connected, such connection relationship is complicated, while connecting line can be made many and diverse, and is connected with each other between line and is easy to produce influence, this Shen
In embodiment please, cable concentrator 4 is installed on substrate 2, cable concentrator 4 is connected with all pressure sensors 3, by all connections
The congruence is total, is connected by data connecting line 5 with data acquisition device 6, pressure sensors 3 all so only needs and cable concentrator
4 are connected, and carry out route and summarize, which simplify whole systems, just look at beauty up, will not generate interference between each connecting line.
It is understood that data acquisition device 6 is connected with pressure sensor 3, pressure is acquired by data acquisition device 6 and is passed
Pressure value is delivered to data processing equipment 8 by data line 7 by the pressure value of sensor 3, and by the control of drop hammer deflection meter
The pressure signal of molding block acquisition and recording load transducer, and convert impact load value for pressure signal and be transmitted to data processing
Device 8 is handled all data by data processing equipment 8, realizes the calibration to drop hammer deflection meter.
It additionally provides and a kind of drop hammer deflection meter impact load is counted using above system in embodiments herein
The method of amount, as shown in Figure 3, comprising the following steps:
Step 1: placing impact load metering device；
As shown in figure 4, impact load metering device is placed in the experimental tank for being provided with the road surface with certain bearing strength,
The ground of the upper surface and road surface that guarantee the loading plate 2 of impact load metering device is in same level.Due to drop hammer type flexure
Weight on instrument is standard quality, and for same road surface, weight is fallen from identical height, impact when hitting with roadbed or road surface
Load is identical, and roadbed or road surface generation instantaneous deformation, that is, dynamic deflection are identical, measures the dynamic deflection to entire road surface
The measurement result of bearing capacity has referential, keeps upper surface and the ground level of loading plate 2, then what loading plate 2 was simulated is
The height of drop on road surface, weight will not change, and can be directly used for the measurement on the road surface after benkelman beams deflectometer is calibrated, if loading plate
2 upper surface and road surface be not in same level, then after the completion of measuring impact load and demarcating benkelman beams deflectometer, if investment makes
With, then need to adjust the height of weight, could make calibration complete benkelman beams deflectometer precision it is constant, answering for calibration certainly will be increased in this way
Polygamy, while adjusting weight height not necessarily can especially precisely, this process can further increase error, if uncomfortable bulk wight hammer is high
Degree, then weight drop height is opposite produces variation, and at this time the relative accuracy of load transducer is changed, and is needed again
It is demarcated, if not re-scaling, the low precision measured, measurement result inaccuracy, and before re-calibration is equivalent to
Without in all senses, not acting on, repetition flogs a dead horse again for calibration.
More specifically, drop hammer deflection meter further include weight 9, bear weight drop bearing plate 10 and with loading plate 2
The bottom plate 11 of contact.In use, bottom plate 11 is contacted with loading plate 2, range applied by the metering system is not limited to one in this way
Drop hammer deflection meter may be repeated use.It is attached between bottom plate 11 and bearing plate 10 by truss, it is whole as one
Body, bears the impact load of weight 9, and this impact load is transmitted to loading plate 2.
In order to enable 2 uniform force of loading plate, so that the measurement of pressure sensor 3 is more accurate, and more preferably, carrying
The diameter of plate 2 is identical as the diameter of bottom plate 11, and power suffered by such bottom plate 11 is uniformly transferred to loading plate 2, so that carrying
2 uniform force of plate.
Step 2: pressure sensor 3 initializes；
Since pressure sensor 3 is fixed between substrate 1 and loading plate 2, loading plate 2 itself has constant weight, causes
3 original state of pressure sensor just receives certain pressure, therefore carries out Initialize installation to pressure sensor 3, so that pressure passes
The measurement result of sensor is more acurrate.
Step 3: pressure sensor 3 acquires pressure signal, and pressure signal is transmitted to data acquisition device 6, data are adopted
Acquisition means 6 acquire the pressure signal of pressure sensor 3 and handle pressure signal to obtain impact load value, the transmission of impact load value
To data processing equipment 8；
The control module of drop hammer deflection meter collects and records the pressure signal of load transducer, and pressure signal is handled
Obtain impact load value；
Specifically, the following steps are included:
S301: the weight of drop hammer deflection meter is fallen from the height demarcated, and falls to loading plate 2, and loading plate 2 will be instantaneous
Impact load is transmitted to pressure sensor 3, and pressure sensor 3 acquires pressure signal, the pressure signal measured is transmitted to data
Acquisition device 6；Meanwhile the pressure signal of the control module acquisition load transducer of drop hammer deflection meter；
Pressure sensor 3 is in original state, when not triggering itself and without signal acquisition, when weight drops down onto loading plate 2
When, the by the impact load effect of pressure sensor 3, at this time pressure sensor 3 is triggered, and carries out signal acquisition.
Step S302: data acquisition device 6 is filtered the pressure signal of pressure sensor 3, is stablized, is high
The filtering signal of quality, and converted by A/D data and convert pressure value for pressure signal；
The pressure signal of load transducer is converted pressure value by control module, and as drop hammer deflection meter surveys impact lotus
Load value；
Since the load transducer of this system is mounted below drop hammer deflection meter carrier, the environment of application is relatively
Difference, therefore, pressure signal have the interference of noise etc. during transmission, need to remove noise, improve signal-to-noise ratio, therefore into
Row filtering processing, obtains the pressure signal of high quality, it is ensured that the accuracy of test data.
Step S303: data acquisition device 6 carries out at addition the pressure value of the multiple pressure sensors 3 acquired every time
Reason, the pressure value being added is the surveyed impact load value of pressure sensor；
It is understood that due to pressure sensor 3 be it is uniformly distributed, the 3 stress addition of each pressure sensor is
For shock loading suffered by loading plate 2.
Step S304: repeat the above steps S301-S303, obtains 15 groups of impact load numbers of at least three pressure ratings
According to impact load data are transmitted to data processing equipment 8 by data acquisition device 6；The impact of drop hammer deflection meter acquisition and recording
Payload values are input to data processing equipment 8.
More specifically, three pressure ratings include 40KN, 50KN and 60KN totally three pressure ratings, each pressure rating
Five repetitive operations are carried out, for example, carrying out five repetitive operations when 40KN, obtain five groups of impact load values.
Each group of impact load value all includes: that the impact load value of pressure sensor 3 and the load of drop hammer deflection meter pass
The impact load value that sensor is surveyed.
Step 4: data processing equipment 8 carries out data processing, and establish equation of linear regression；
Data processing equipment 8 averages the impact load value of the pressure sensor 3 of obtained each grade, at data
Reason device 8 averages the impact load value of 8 drop hammer deflection meter of obtained each grade, and establishes pressure sensor 3
Impact load value and drop hammer deflection meter impact load value between equation of linear regression, according to the equation it is curved to drop hammer type
The load transducer of heavy instrument is demarcated.
More specifically, what three grades data obtained is linearity of regression equation, according to the linearity of regression equation to load
Sensor is adjusted, that is, is demarcated, so that obtained by the measurement result of drop hammer deflection meter load transducer and pressure sensor 3
Standard results match, such load transducer i.e. demarcate complete, drop hammer deflection meter can carry out using.
Although not each embodiment is only wrapped it should be appreciated that this specification is described according to each embodiment
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art
The other embodiments that member is understood that.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope that is bright, and being not intended to limit the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of metering system of drop hammer deflection meter impact load characterized by comprising
Substrate (1)；
Loading plate (2), the loading plate (2) are superimposed on above the substrate (1)；
Pressure sensor (3), multiple pressure sensors (3) are distributed in the substrate (1) upper surface and the loading plate (2)
Between lower surface；
Data acquisition device (6), the data acquisition device (6) are connected with pressure sensor (3)；With
Data processing equipment (8), the data processing equipment (8) pass through data line (7) and the data acquisition device (6)
It is connected.
2. metering system according to claim 1, which is characterized in that the loading plate (2) and the substrate (1) it is transversal
Face is identical shape.
3. metering system according to claim 2, which is characterized in that the loading plate (2) and the substrate (1) it is transversal
Face is round；Multiple pressure sensors (3) are evenly distributed in a manner of circular array.
4. metering system according to claim 3, which is characterized in that substrate (1) upper surface and loading plate (2) following table
Face offers the blind round hole for installing the pressure sensor (3).
5. metering system according to claim 4, which is characterized in that be equipped with cable concentrator (4), institute on the substrate (2)
It states cable concentrator (4) to be connected with all pressure sensors (3), the cable concentrator (4) is acquired by data connecting line (5) and data
Device (6) is connected.
6. metering system according to claim 5, which is characterized in that the drop hammer deflection meter includes:
Load transducer, the load transducer collect and record the drop hammer deflection meter pressure signal；
Control module, the control module are connected with load transducer, the movement of the control module control drop hammer deflection meter
State, and pressure value is converted by load transducer pressure signal collected.
7. a kind of metering method of drop hammer deflection meter impact load, which comprises the following steps:
Any metering system of claim 1-6 is placed in experimental tank；
The pressure sensor (3) are initialized；
The data acquisition device (6) acquires the pressure signal of the pressure sensor (3) and handles pressure signal and rushed
Payload values are hit, impact load value is transmitted to data processing equipment (8)；
The control module of the drop hammer deflection meter collects and records the drop hammer deflection meter pressure signal, and by pressure
Signal processing obtains impact load value；
Data processing equipment (8) averages the impact load value of the pressure sensor (3) of obtained each grade, number
The impact load value of the drop hammer deflection meter of obtained each grade is averaged according to processing unit (8), and establishes pressure
Equation of linear regression between the impact load value of force snesor (3) and the impact load value of drop hammer deflection meter.
8. metering method according to claim 7, which is characterized in that the experimental tank is provided with road surface, and the impact
The upper surface and the road surface of the loading plate (2) of Load measurement device are in same level.
9. metering method according to claim 8, which is characterized in that the data acquisition device (6) acquires the pressure
The pressure signal of sensor (3), and the impact load value that pressure signal is handled is transmitted to data processing equipment (8), have
Body includes:
S301: the weight of drop hammer deflection meter is fallen from the height demarcated, and the pressure sensor (3) acquires pressure signal,
The pressure signal measured is transmitted to data acquisition device (6)；Meanwhile the control module acquisition load sensing of drop hammer deflection meter
The pressure signal of device；
Step S302: data acquisition device (6) is filtered the pressure signal of pressure sensor (3), and passes through A/D number
Pressure value is converted by pressure signal according to conversion；
The pressure signal of the load transducer is converted pressure value by the control module, and as drop hammer deflection meter surveys punching
Hit payload values；
Step S303: data acquisition device (6) carries out at addition the pressure value of the multiple pressure sensors (3) acquired every time
Reason, the pressure value being added is the surveyed impact load value of pressure sensor；
Step S304: repeat the above steps S301-S303, obtains the impact load data of three pressure ratings, data acquisition dress
It sets (6) and pressure data is transmitted to data processing equipment (8)；The impact load value of drop hammer deflection meter acquisition and recording is input to number
According to processing unit (8).
10. metering method according to claim 9, which is characterized in that the impact load data of each grade include:
The impact load value of five groups of pressure sensors (3) surveyed impact load value and five groups of drop hammer deflection meter acquisition and recordings.
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| CN201810660006.XA CN109001052A (en) | 2018-06-25 | 2018-06-25 | A kind of metering system and method for drop hammer deflection meter impact load |
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| CN201810660006.XA CN109001052A (en) | 2018-06-25 | 2018-06-25 | A kind of metering system and method for drop hammer deflection meter impact load |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111024524A (en) * | 2019-12-11 | 2020-04-17 | 四川陆通检测科技有限公司 | Measuring system and measuring method for roadbed elastic modulus |
| CN113418792A (en) * | 2021-05-24 | 2021-09-21 | 株洲时代新材料科技股份有限公司 | Oil cylinder underlying type rubber product large-load fatigue test device and test method thereof |
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