CN105784271A - Calibration device and method for three-component-force sensor - Google Patents
Calibration device and method for three-component-force sensor Download PDFInfo
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- CN105784271A CN105784271A CN201610353557.2A CN201610353557A CN105784271A CN 105784271 A CN105784271 A CN 105784271A CN 201610353557 A CN201610353557 A CN 201610353557A CN 105784271 A CN105784271 A CN 105784271A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention discloses a calibration device and method for a three-component-force sensor. The calibration device comprises a supporting seat, a beam rotationally connected to the supporting seat through a rotary shaft, hanger iron movably connected to the beam, a single-component-force sensor which is fixedly installed on the beam and is accurately calibrated, a base relatively fixed to the supporting seat in position, the to-be-calibrated three-component-force sensor arranged below the single-component-force sensor, a laser range finder used for measuring the value x of the distance between the gravity center of the hanger iron and the central axis of the rotary shaft, a gradienter capable of being connected to the beam in a transverse moving mode and measuring the included angle theta between the beam and the horizontal line, a data acquisition system connected with both the single-component-force sensor and the three-component-force sensor, and a data processing system connected with the data acquisition system, the laser range finder and the gradienter. The force measurement end of the three-component-force sensor is connected with that of the single-component-force sensor through a vertically-tightened rope. The calibration device and method can precisely and rapidly calibrate three-component-force sensors of different sizes and specifications in the direction x, the direction y and the direction z.
Description
Technical field
The present invention relates to ocean engineering and mechanical engineering field, especially relate to caliberating device and the scaling method in Naval Architecture and Ocean Engineering experiment various sizes of three three orientation of component sensor x, y, z used.
Background technology
At Naval Architecture and Ocean Engineering and mechanical engineering field, experiment plays more and more important role.Experimental result can not only check the result of theory analysis, moreover it is possible to as the test basis of method for numerical simulation, logarithm value analogue model is continued to optimize, and therefore experiment also becomes scientific research and the indispensable link of engineering field.The part that the collection of the collection of data, especially power is important in testing especially, the collection of the data of power is all highly important in the experiment of stormy waves stream, slamming experiment, structural strength control experiment.Present stage power is all recorded by three component sensors or single component sensor.And sensor must first be demarcated before the use.By demarcating, lab assistant can obtain static demarcating curve, it is determined that the electricity of sensor exports and by the corresponding relation between dynamometry, and calculating obtains linear coefficient, for data collecting system.
But there are the problems such as low precision, complicated operation, the multi-faceted demarcation that multrirange many sizes range sensors cannot be realized in present stage laboratory and engineering unit sensor calibration apparatus and method.It addition, caliberating device does not have data handling system mostly.
These problems are in particular in:
1) owing to staking-out work is both relevant with instrument self character, also relevant with the connection of reality many material elementses such as instrument, installation, layout, it is also affected by the interference of various environmental factors simultaneously, this makes many caliberating device precision very poor.
2) design of many caliberating device standing parts is unreasonable, causes the sensor that can only fix specific standard in one direction, to such an extent as to cannot realize the multi-faceted demarcation of multrirange many sizes range sensors.
3) many laboratorys adopt the method demarcation directly placed by counterweight or hang on a sensor, and this causes constantly adding in calibration process counterweight, makes proving operation become sufficiently complex, is also more easily generated error.
4) caliberating device of many three component sensors does not have data to process integrating device, causes that experimenter wants the size of the hand-kept signal of telecommunication and power, then the later stage calculates and obtains static demarcating curve.This also makes calibration process more complicated.This result also in nominal time loss very greatly simultaneously, affects test progress.
Summary of the invention
The present invention seeks to: for above-mentioned technical problem, it is proposed to the caliberating device of a kind of three component sensors and scaling method, so that three component sensors of different size different model are carried out accurate Fast Calibration on three directions of x, y, z.
The technical scheme is that the caliberating device of three described component sensors, including:
Supporting seat；
Along the crossbeam of the horizontal-extending layout of X-direction, by extending along Y direction, the middle part of this crossbeam arranges that axis of rotation is connected on described supporting seat；
It is connected on described crossbeam and can along the extension ferrum of the length direction transverse shifting of this crossbeam；
It is fixedly mounted on described crossbeam and is arranged in left and right two opposite sides of described rotating shaft by single component sensor of accurate calibration, described extension ferrum and this list component sensor；
Base relatively-stationary with the position of described supporting seat, this base is provided with the three component fixing structure of sensors for fixing various model three component sensor；
It is arranged in the three component sensors to be calibrated below described single component sensor, this three component sensor) it is removably attached on described base by described three component fixing structure of sensors, and its dynamometry end is connected with the dynamometry end of described single component sensor by the rope vertically tightened；
For measuring the laser range finder of distance value x between center of gravity and the axis of described rotating shaft of described extension ferrum, this laser range finder is arranged on described crossbeam and is positioned at described rotating shaft place；
Can be connected on described crossbeam transverse shifting and the level indicator of angle theta between this crossbeam and horizontal line can be measured；
The data collecting system being all connected with described single component sensor and three component sensors, this data collecting system obtains the institute dynamometry value F ' of described single component sensor and institute's dynamometry value of described three component sensors, and convert institute's dynamometry value of single component sensor to corresponding mechanics signal of telecommunication numerical value U ' and outwards export, institute's dynamometry value of three component sensors is converted to corresponding mechanics signal of telecommunication numerical value U and outwards exports；And
With described data collecting system, the data handling system that laser range finder and level indicator are all connected with, this data handling system receives the described mechanics signal of telecommunication numerical value U ' and described mechanics signal of telecommunication numerical value U of described data collecting system output, ferrum center of gravity is hung to the distance value x of rotating shaft axis measured by described laser range finder, crossbeam measured by described level indicator and the angle theta between horizontal line, and data handling system can calculate the institute dynamometry value F ' of described single component sensor according to the mechanics signal of telecommunication numerical value U ' that it receives, the ferrum center of gravity distance value x to rotating shaft axis can be hung according to what it received simultaneously, angle theta between crossbeam and horizontal line, pre-enter the deadweight G hanging ferrum in this data handling system and calculate the vertical direction theory stress value F of described three component sensors.
This caliberating device of the present invention, on the basis of technique scheme, also includes following preferred version:
Described data handling system has the display unit of the vertical direction theory stress value F that can show described mechanics signal of telecommunication numerical value U ', the institute dynamometry value F ' of described single component sensor, described mechanics signal of telecommunication numerical value U and described three component sensors.
Described base includes horizontally disposed base plate and be vertically fixed on the riser above this base plate, described three component fixing structure of sensors include being formed on described base plate for 8 the vertical through holes wearing screw, 8 horizontal through hole for wearing screw of being formed on described riser.
The aperture of described vertical through hole and horizontal through hole is 5mm.
In 8 described vertical through holes, wherein 4 vertical through holes are arranged in the periphery of other 4 vertical through holes, and the 4 of inner side vertical through holes and the peripheral all rectangular distribution of 4 vertical through holes；In 8 described horizontal through hole, wherein 4 horizontal through hole are arranged in the periphery of other 4 horizontal through hole, and the 4 of inner side horizontal through hole and the peripheral all rectangular distribution of 4 horizontal through hole.
Described crossbeam includes the left-half by described rotating shaft axis to crossbeam left side and the right half part by described rotating shaft axis to crossbeam right side, being provided with three graticules along the distribution of crossbeam length direction uniform intervals in described left-half, the left-half of crossbeam is divided into the extension ferrum moving section that four segment length are consistent by these three graticules.
The length of described left-half and right half part is equal, and described single component transducer arrangements is in the right part of described crossbeam.
Described data handling system is single-chip microcomputer.
This method utilizing above-mentioned caliberating device to demarcate three component sensors of the present invention, comprises the following steps:
Step one, mobile described extension ferrum position on described crossbeam, until the registration of described laser range finder is zero；
Step 2, by regulate described level indicator lateral attitude on described crossbeam, described crossbeam is adjusted to level；
The dynamometry end of three component sensors to be calibrated is connected with the dynamometry end of described single component sensor, and makes this rope tighten by step 3, use rope；
Step 4, by regulate described level indicator lateral attitude on described crossbeam, described crossbeam is again adjusted to level；
Ferrum is hung to a certain position described in step 5, transverse shifting, after the registration of described level indicator is stable, read the vertical direction theory stress value F of the described mechanics signal of telecommunication numerical value U ' of display, the institute dynamometry value F ' of described single component sensor, described mechanics signal of telecommunication numerical value U and described three component sensors in described data handling system；
The institute dynamometry value F ' of single component sensor described in step 6, the comparison step five and vertical direction theory stress value F of described three component sensors, if the vertical direction theory stress value F of the institute dynamometry value F ' of described single component sensor and described three component sensors differs within 1%, then the vertical direction theory stress value F of described three component sensors and described mechanics signal of telecommunication numerical value U is demarcated；If the vertical direction theory stress value F of the institute dynamometry value F ' of described single component sensor and described three component sensors differs by more than 1%, then repeating said steps five and step 6；
Step 7, repeating said steps five and step 6, obtain the calibration curve of described mechanics signal of telecommunication numerical value U and the vertical direction theory stress value F of described three component sensors.
The invention have the advantage that
1, this caliberating device of the present invention utilizes lever principle, make to be calibrated three component sensors by the mobile position hanging ferrum and be subject to different size of pulling force, realize the demarcation in three three directions of component sensor, and be equipped with there is the data handling system of accurate calibration function, there is certainty of measurement height, time-saving and efficiency, easy for installation process the advantages such as simple without handling, data.
This caliberating device 2, base is provided with three component fixing structure of sensors of fixing various model various sizes, so that can demarcate the various sizes of three component fixing structure of sensors of different model.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be described further:
Fig. 1 is the general assembly drawing of this caliberating device of the embodiment of the present invention；
Fig. 2 is the broken away view of this caliberating device of the embodiment of the present invention；
Fig. 3 is the calibration principle figure of this caliberating device of the embodiment of the present invention；
Fig. 4 is the installation diagram to the large scale three component sensor Z-direction timing signal three component sensor that diameter is 100mm Yu base；
Fig. 5 is the installation diagram to the small size three component sensors X direction sign timing three component sensors that diameter is 50mm with base；
Wherein: 1-supporting seat, 2-rotating shaft, 3-crossbeam, 4-hangs ferrum, the mono-component sensor of 5-, 6-tri-component sensor, 7-restricts, 8-base, 9-laser range finder, 10-level indicator, 11-data collecting system, 12-data handling system, the mono-component sensor installation seat of 13-, 14-screw；
The junction point of three component sensors and rope when a-is to Z-direction dynamometry, b-is for fixing the vertical through hole of large scale sensor, c-is for fixing the vertical through hole of small size sensor, the junction point of three component sensors and rope when d-is to X-direction dynamometry, e-is for fixing the horizontal through hole of large scale sensor, and f-is for fixing the horizontal through hole of small size sensor.
Detailed description of the invention
Fig. 1～Fig. 3 illustrates a specific embodiment of the caliberating device of this three component sensors of the present invention, and this device mainly includes supporting seat 1, crossbeam 3, hangs ferrum 4, by single component sensor 5 of accurate calibration, three component sensors 6 to be calibrated, rope 7, base 8, laser range finder 9, level indicator 10, data collecting system 11 and data handling system 12.Wherein:
The bottom surface of supporting seat 1 is plane, and it is stably placed on when rating test on test table top.Crossbeam 3 is along the horizontal-extending layout of X-direction, the middle part of crossbeam 3 is rotatably connected on described supporting seat 1 by rotating shaft 2, the axis of its shaft 2 extends along Y direction to be arranged, so that crossbeam 3 can rotate in X-Z plane around rotating shaft 2 (in other words around Y-axis).And the described axis of rotating shaft 2 is intersected with the length axes of crossbeam 3.Hanging ferrum 4 and be movably connected on crossbeam 3, hanging ferrum 4 can along the length direction transverse shifting of crossbeam 3.This example is shaped with on this extension ferrum 4 a nested hole, is slidably connected on described crossbeam 3 particular by this nesting hole, and the center of gravity hanging ferrum 4 is positioned in the length axes of crossbeam 3.Single component sensor 5 is by accurate calibration, this list component sensor 5 and described extension ferrum 4 and left and right two opposite sides being arranged in described rotating shaft 2, wherein single component sensor 5 is fixed on the right part of crossbeam 3 especially by single component sensor installation seat 13, and the dynamometry end of single component sensor 5 is arranged straight down.Three component sensors 6 are the demarcation object of this device, and it is fixed on described base 8, and are positioned at the underface of single component sensor 5.(namely the length of rope 7 is extended along Z-direction by vertically tightening for this three component sensor 6 dynamometry end, but it should be noted that, this is when crossbeam 3 is in perfectly level state, rope 7 just understand substantially vertical) described rope 7 be connected with the dynamometry end of described single component sensor 5.The position of base 8 and described supporting seat 1 is relatively fixed, and this base 8 includes horizontally disposed base plate 81 and is vertically fixed on the riser 802 above this base plate 801, and the riser 802 above base plate 801 is stainless steel.Being provided with the three component fixing structure of sensors for fixing various model various sizes three component sensor on base 8, three above-mentioned component sensors 6 are through this three component fixing structure of sensor and are removably attached on base 8.
In this example, the specific constructive form of described three component fixing structure of sensors is: it include being formed on described base plate 801 for 8 the vertical through holes wearing screw 14 and 8 horizontal through hole for wearing screw being formed on described riser 802, and vertically the aperture of through hole and horizontal through hole is 5mm.In 8 described vertical through holes, wherein 4 vertical through holes are arranged in the periphery of other 4 vertical through holes, and the 4 of inner side vertical through holes and the peripheral all rectangular distribution of 4 vertical through holes.In 8 described horizontal through hole, wherein 4 horizontal through hole are arranged in the periphery of other 4 horizontal through hole, and the 4 of inner side horizontal through hole and the peripheral all rectangular distribution of 4 horizontal through hole.Such as: when this device is for demarcating three component sensor that large scale three component sensor ratio such as diameter is 100mm, 4 horizontal through hole of periphery or 4 vertical through hole attachment screws of periphery are then utilized to fix three component sensors, it is prevented that this three component sensor loosens in either direction.When this device is for demarcating three component sensor that small size three component sensor ratio such as diameter is 50mm, 4 horizontal through hole of inner side or 4 vertical through hole attachment screws of inner side are then utilized to fix three component sensors, it is prevented that this three component sensor loosens in either direction.If three component sensor Z-directions are demarcated, then make the Z-direction dynamometry end of three component sensors vertically upwardly disposed and be connected with described rope 7；If three component sensor Y-directions are demarcated, then make the Y-direction dynamometry end of three component sensors vertically upwardly disposed and be connected with described rope 7.If three component sensors X directions are demarcated, then make the X-direction dynamometry end of three component sensors vertically upwardly disposed and be connected with described rope 7.
Fig. 4 is to the large scale three component sensor Z-direction timing signal that diameter is 100mm, the installation diagram of three component sensors and base 8, in the figure, the Z-direction dynamometry end of three component sensors is vertically upwardly disposed, utilizes 4 peripheral vertical through hole attachment screws to fix the bottom of this three component sensor.The junction point of three component sensors and rope when a place is to Z-direction dynamometry in figure, in figure, b place is the vertical through hole for fixing large scale sensor, and in figure, c place is the vertical through hole for fixing small size sensor.
Fig. 5 is to the small size three component sensors X direction sign timing that diameter is 50mm, the installation diagram of three component sensors and base 8, in the figure, the X-direction dynamometry end of three component sensors is vertically upwardly disposed, utilizes 4 horizontal through hole attachment screws of inner side to fix the sidepiece of this three component sensor.The junction point of three component sensors and rope when d place is to X-direction dynamometry in figure, in figure, e place is the horizontal through hole for fixing large scale sensor, and in figure, f place is the horizontal through hole for fixing small size sensor.
Laser range finder 9 is arranged on described crossbeam 3 and is positioned at described rotating shaft 2 place, and it is for measuring distance value x between center of gravity and the axis of described rotating shaft 2 of described extension ferrum 4, and can distance value x between extension ferrum center of gravity and the rotating shaft axis of its measurement outwards be exported.Obviously, the rotary centerline of the axis of rotating shaft 2 namely described crossbeam 3.In this example, this laser range finder 9 is specifically arranged in the middle part lateral location of crossbeam 3.
Level indicator 10 is by clip and is bolted on described crossbeam 3, and level indicator 10 can along crossbeam 3 transverse shifting, to utilize lever principle that the levelness of crossbeam 3 is modified.This level indicator 10 can measure the angle theta between this crossbeam 3 and horizontal line simultaneously, and can the angle theta between the crossbeam 3 of its measurement and horizontal line outwards be exported.In this example, this level indicator 10 is specifically arranged in the middle top surface position of crossbeam 3.
Data collecting system 11 was both connected with described single component sensor 5, it is all connected with described three component sensors 6 again, institute's dynamometry value of its institute dynamometry value F ' that can obtain described single component sensor 5 and described three component sensors 6, and convert institute's dynamometry value of single component sensor 5 to corresponding mechanics signal of telecommunication numerical value U ' and outwards export, institute's dynamometry value of three component sensors 6 is converted to corresponding mechanics signal of telecommunication numerical value U and outwards exports.
nullData handling system 12 is Single Chip Microcomputer (SCM) system，It is with described data collecting system 11、Laser range finder 9 and level indicator 10 are all connected with，This data handling system 12 receives the described mechanics signal of telecommunication numerical value U ' and described mechanics signal of telecommunication numerical value U of described data collecting system 11 output、Ferrum center of gravity is hung to the distance value x of rotating shaft axis measured by described laser range finder 9、Crossbeam 3 measured by described level indicator 10 and the angle theta between horizontal line (namely X-axis line)，And the institute dynamometry value F ' of described single component sensor 5 can be calculated (because single component sensor 5 is with by accurate calibration in advance according to the mechanics signal of telecommunication numerical value U ' that it receives，Its U '-F ' corresponding relation is known)，The ferrum center of gravity distance value x to rotating shaft axis can be hung according to what it received simultaneously、Angle theta between crossbeam 3 and horizontal line、Pre-enter the deadweight G hanging ferrum 4 in this data handling system 12 and calculate the vertical direction theory stress value F of described three component sensors 6.
The vertical direction theory stress value F of described three component sensors 6 namely the vertical direction component of three component force acting on transducer, be also that we need the power of demarcation.
According to geometric mechanics calculus of relation, calculation process is mechanics field routine techniques, therefore do not repeat them here, it is known that vertical direction theory stress value F=[(1.49+2.02*sin θ-0.19*cos θ)/(2.626*cos θ+4.3635*sin θ)] the * G*x*10 of three component sensors 6-3.Stress F '=[(1.49*cos θ+2.02*sin θ-0.19)/(2.626*cos θ+4.3635*sin θ)] * G*x*10 of single component sensor 5-3。
When θ=0, F=F '=G*x/2020, it is consistent with actual, describes the correctness of the derivation of equation.
And in this example, described data handling system 12 has display unit, and this display unit can show the vertical direction theory stress value F of described mechanics signal of telecommunication numerical value U ', the institute dynamometry value F ' of described single component sensor 5, described mechanics signal of telecommunication numerical value U and described three component sensors 6.
Described crossbeam 3 includes the left-half by described rotating shaft 2 axis to crossbeam left side and the right half part by described rotating shaft 2 axis to crossbeam right side, and the length of described left-half and right half part is equal.Described left-half is provided with three graticule 3a, these three graticule 3a along the distribution of crossbeam 3 length direction uniform intervals the left-half of crossbeam 3 is divided into the extension ferrum moving section that four segment length are consistent.
So, hang ferrum 4 in transverse shifting process, be one grade of scope, two grades of scopes, third gear scope and fourth gear scope successively from crossbeam 3 left side to crossbeam center.Measure, with one grade, the three component sensors that range is maximum, measure, by fourth gear, the three component sensors that range is minimum.It is concrete that the material of described extension ferrum 4 is AISI4130 steel, and density is 7.85*103kg/m3, and volume is 1.3346463*107mm3 in the present embodiment, therefore its deadweight G=(1.336463*10-2) * (7.85*103) * 9.8N=1026.746N.So, we are according to lever principle " G*x=T*OF ", and wherein T is the tension force of rope 7, and O is the center of rotation of crossbeam, and OF is the arm of force of T, can calculate:
Fourth gear demarcates the scope of power: 0～256.6865N；
Third gear demarcates the scope of power: 256.6865～513.373N；
Two grades of scopes demarcating power are: 513.373～770.0595N；
One grade of scope demarcating power is: 770.0595～1026.746N.
By calculating, calculation process is mechanics field routine techniques, therefore does not repeat them here, it is known that the arm of force of T
Referring again to shown in Fig. 1～Fig. 3, now utilize the method that this caliberating device of the present embodiment demarcates three component sensors to be simply described below, the method comprises the following steps:
Step one, the mobile described extension ferrum 4 position on described crossbeam 3, until the registration of described laser range finder 9 is zero.For convenient operation, generally first described extension ferrum 4 being moved the middle part to crossbeam 2, then fine setting hangs the position of ferrum 4 until the registration of laser range finder 9 is zero.
Step 2, by regulate the described level indicator 10 lateral attitude on described crossbeam 3, described crossbeam is adjusted to level, i.e. angle theta=0 between crossbeam 3 and horizontal line (namely X-axis line).
The dynamometry end of three component sensors 6 to be calibrated is connected with the dynamometry end of described single component sensor 5, and makes this rope 7 tighten by step 3, use rope 7.The length of rope 7 is vertically extended along Z axis.
Step 4, by finely tune the described level indicator 10 lateral attitude on described crossbeam 3, described crossbeam is again adjusted to level.
The a certain position of ferrum 4 to crossbeam 3 is hung described in step 5, transverse shifting, after the registration of described level indicator 10 is stable, read the vertical direction theory stress value F of the described mechanics signal of telecommunication numerical value U ' of display, the institute dynamometry value F ' of described single component sensor 5, described mechanics signal of telecommunication numerical value U and described three component sensors 6 in described data handling system 12.
The institute dynamometry value F ' of single component sensor 5 described in step 6, the comparison step five and vertical direction theory stress value F of described three component sensors 6.If the vertical direction theory stress value F of the institute dynamometry value F ' of described single component sensor 5 and described three component sensors 6 differs within 1%, then the vertical direction theory stress value F of described three component sensors 6 and described mechanics signal of telecommunication numerical value U is demarcated, namely according to the vertical direction theory stress value F of three component sensors 6 and corresponding described mechanics signal of telecommunication numerical value U, U-F image draws corresponding fixed point.If the vertical direction theory stress value F of the institute dynamometry value F ' of described single component sensor 5 and described three component sensors 6 differs by more than 1%, then repeat step 5 and step 6 (change and hang the ferrum 4 position on crossbeam 3).
Step 7, repeatedly repeating said steps five and step 6, thus obtaining multiple fixed point, the vertical direction theory stress value F of all corresponding one group of mechanics signal of telecommunication numerical value U of each fixed point and three component sensors, these fixed points are connected in turn with smooth lines, just obtain the calibration curve of described mechanics signal of telecommunication numerical value U and the vertical direction theory stress value F of described three component sensors 6.
Certainly, above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow people will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalent transformations done according to the spirit of main technical schemes of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (9)
1. the caliberating device of a component sensor, it is characterised in that this device includes:
Supporting seat (1)；
Along the crossbeam (3) of the horizontal-extending layout of X-direction, by extending along Y direction, the middle part of this crossbeam (3) arranges that rotating shaft (2) is rotatably connected on described supporting seat (1)；
It is connected to described crossbeam (3) upper and can along the extension ferrum (4) of the length direction transverse shifting of this crossbeam；
It is fixedly mounted on described crossbeam (3) and is arranged in by single component sensor (5) of accurate calibration, described extension ferrum (4) and this list component sensor (5) left and right two opposite sides of described rotating shaft (2)；
With the relatively-stationary base in the position (8) of described supporting seat (1), this base (8) is provided with the three component fixing structure of sensors for fixing various model three component sensor；
It is arranged in the three component sensors (6) to be calibrated of described single component sensor (5) lower section, this three component sensor (6) is removably attached on described base (8) by described three component fixing structure of sensors, and its dynamometry end is connected with the dynamometry end of described single component sensor (5) by the rope (7) vertically tightened；
For measuring the laser range finder (9) of distance value x between center of gravity and the axis of described rotating shaft (2) of described extension ferrum (4), it is upper and be positioned at described rotating shaft (2) place that this laser range finder (9) is arranged on described crossbeam (3)；
Described crossbeam (3) can be connected to transverse shifting and go up and can measure the level indicator (10) of the angle theta between this crossbeam (3) and horizontal line；
The data collecting system (11) being all connected with described single component sensor (5) and three component sensors (6), this data collecting system (11) obtains the institute dynamometry value F ' of described single component sensor (5) and institute's dynamometry value of described three component sensors (6), and convert institute's dynamometry value of single component sensor (5) to corresponding mechanics signal of telecommunication numerical value U ' and outwards export, institute's dynamometry value of three component sensors (6) is converted to corresponding mechanics signal of telecommunication numerical value U and outwards exports；And
nullWith described data collecting system (11)、The data handling system (12) that laser range finder (9) and level indicator (10) are all connected with，This data handling system (12) receives described mechanics signal of telecommunication numerical value U ' and the described mechanics signal of telecommunication numerical value U that described data collecting system (11) exports、Extension ferrum (4) center of gravity measured by described laser range finder (9) is to the distance value x of rotating shaft (2) axis、Crossbeam (3) measured by described level indicator (10) and the angle theta between horizontal line，And data handling system (12) can calculate the institute dynamometry value F ' of described single component sensor (5) according to the mechanics signal of telecommunication numerical value U ' that it receives，Simultaneously can according to the distance value x of its extension ferrum (4) center of gravity received to rotating shaft (2) axis、Angle theta between crossbeam (3) and horizontal line、The deadweight G pre-entering the extension ferrum (4) in this data handling system (12) calculates the vertical direction theory stress value F of described three component sensors (6).
2. the caliberating device of three component sensors according to claim 1, it is characterised in that: described data handling system (12) has the display unit of the vertical direction theory stress value F that can show described mechanics signal of telecommunication numerical value U ', the institute dynamometry value F ' of described single component sensor (5), described mechanics signal of telecommunication numerical value U and described three component sensors (6).
3. the caliberating device of three component sensors according to claim 1, it is characterized in that: described base (8) includes horizontally disposed base plate (81) and is vertically fixed on the riser (802) of this base plate (801) top, described three component fixing structure of sensors include being formed on 8 vertical through holes that being used on described base plate (801) wears screw, 8 horizontal through hole for wearing screw being formed on described riser (802).
4. the caliberating device of three component sensors according to claim 3, it is characterised in that: the aperture of described vertical through hole and horizontal through hole is 5mm.
5. the caliberating device of three component sensors according to claim 3, it is characterized in that: in 8 described vertical through holes, wherein 4 vertical through holes are arranged in the periphery of other 4 vertical through holes, and the 4 of inner side vertical through holes and the peripheral all rectangular distribution of 4 vertical through holes；In 8 described horizontal through hole, wherein 4 horizontal through hole are arranged in the periphery of other 4 horizontal through hole, and the 4 of inner side horizontal through hole and the peripheral all rectangular distribution of 4 horizontal through hole.
6. the caliberating device of three component sensors according to claim 1, it is characterized in that: described crossbeam (3) includes the left-half by described rotating shaft (2) axis to crossbeam left side and the right half part by described rotating shaft (2) axis to crossbeam right side, being provided with three graticules (3a) along the distribution of crossbeam (3) length direction uniform intervals in described left-half, the left-half of crossbeam (3) is divided into the extension ferrum moving section that four segment length are consistent by these three graticules (3a).
7. the caliberating device of three component sensors according to claim 6, it is characterised in that: the length of described left-half and right half part is equal, and described single component sensor (5) is arranged in the right part of described crossbeam (3).
8. the caliberating device of three component sensors according to claim 1, it is characterised in that: described data handling system (12) is single-chip microcomputer.
9. one kind utilizes the method that the caliberating device as described in any claim in claim 1～8 demarcates three component sensors, it is characterised in that the method comprises the following steps:
Step one, the mobile described extension ferrum (4) position on described crossbeam (3), until the registration of described laser range finder (9) is zero；
Step 2, by regulating described level indicator (10) lateral attitude on described crossbeam (3), described crossbeam is adjusted to level；
The dynamometry end of three component sensors (6) to be calibrated is connected with the dynamometry end of described single component sensor (5), and makes this rope (7) tighten by step 3, use rope (7)；
Step 4, by regulating described level indicator (10) lateral attitude on described crossbeam (3), described crossbeam is again adjusted to level；
Ferrum (4) is hung to a certain position described in step 5, transverse shifting, after the registration of described level indicator (10) is stable, read the vertical direction theory stress value F of the described mechanics signal of telecommunication numerical value U ' of the upper display of described data handling system (12), the institute dynamometry value F ' of described single component sensor (5), described mechanics signal of telecommunication numerical value U and described three component sensors (6)；
The institute dynamometry value F ' of single component sensor (5) described in step 6, the comparison step five and vertical direction theory stress value F of described three component sensors (6), if the vertical direction theory stress value F of the institute dynamometry value F ' of described single component sensor (5) and described three component sensors (6) differs within 1%, then the vertical direction theory stress value F of described three component sensors (6) and described mechanics signal of telecommunication numerical value U is demarcated；If the vertical direction theory stress value F of the institute dynamometry value F ' of described single component sensor (5) and described three component sensors (6) differs by more than 1%, then repeating said steps five and step 6；
Step 7, repeating said steps five and step 6, obtain the calibration curve of described mechanics signal of telecommunication numerical value U and the vertical direction theory stress value F of described three component sensors (6).
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