CN101865750B - Portable calibrating device for pull pressure sensor - Google Patents
Portable calibrating device for pull pressure sensor Download PDFInfo
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- CN101865750B CN101865750B CN 201010204961 CN201010204961A CN101865750B CN 101865750 B CN101865750 B CN 101865750B CN 201010204961 CN201010204961 CN 201010204961 CN 201010204961 A CN201010204961 A CN 201010204961A CN 101865750 B CN101865750 B CN 101865750B
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Abstract
The invention discloses a pull pressure sensor which is a sensor used for pull pressure measurement of an aircraft elevator control system. The sensor has the characteristics of two-way force measurement, long range, high precision, continuous application force value points and the like. Aiming at solving the problem that weight calibration cannot realize the continuous loading of a force value in the traditional method of dead weight type (weight) calibration, a pull pressure calibration device is developed in the invention based on a hydraulic sensor technology and comprises a one-way quantitative hydraulic pump, a bidirectional hydraulic control module, a one-way oil-return device, a special calibration clamp, a calibration force sensor and a standard force value display. The device is developed based on a measurement principle of a back-to-back comparative method, intensively solves three key problems on two-way continuous force source, two-way large-range loading force (100,000N) and portability (26cm*21cm*82cm) of the whole set of device. The device can also be used for the calibration of the pull pressure sensors with the precision lower than 0.05 percent in other fields.
Description
Technical field
The present invention relates to a kind of calibrating device for sensors, specifically, relate to a kind of calibrating installation for aircraft evelvator control system pull pressure sensor.
Background technology
The aircraft evelvator control system is the control system of aircraft taxi direction and flight attitude, mainly stretch out the power value output that driving force, the right side are stretched out 6 directions such as driving force, left withdrawal driving force, right withdrawal driving force, left output rocking arm power and right output rocking arm power by a left side, line of travel and flight attitude to aircraft are controlled, and the accuracy of power output value directly affects flight quality and flight safety.The at present measurement of these power values mainly relies on pull pressure sensor in the steering wheel hydraulic test bench and supporting display device thereof, require these sensors are carried out periodic calibration according to national metrological verification regulations, to guarantee its performance parameter and technical indicator accurately and reliably.
All adopt net weight formula (counterweight) calibration steps for wide range pull pressure sensor (more than the 30000N) at present, this method precision is high, good reliability, but these counterweights are bulky, carry inconvenience, and most net weight formula metrological standard unit is comprised of fixed lever and motor drive mechanism, do not possess the condition of carrying, can not carry out portable, motor driven metering.In addition, described pull pressure sensor is to be applied in the continuous environment that loads of power value, and net weight formula calibrating installation does not possess the continuous value-added tax function of power value, and this calibration for the sensor nonlinear parameter has significant limitation.
Standard transducer refers to be used as the power sensor of standard set-up in calibration pull pressure sensor process.Standard transducer is relative concept, and when the ratio of the uncertainty of measurement of certain sensor and the uncertainty of measurement of tested sensor is lower than 1/3, and this sensor passed through repeatability, stability assessment, and then this sensor just can be called standard transducer.In the present invention, standard transducer employing measuring accuracy is 0.03% proof force sensor.
Summary of the invention
Purpose of the present invention just is for above-mentioned the deficiencies in the prior art, and a kind of calibration problem that can solve the wide range pull pressure sensor is provided.
The objective of the invention is to realize by following portable calibrating device for pull pressure sensor.
A kind of calibrating installation for aircraft evelvator control system pull pressure sensor is made of unidirectional quantitative hydraulic pump, bidirectional hydraulic control module, unidirectional oil return apparatus, calibration unit clamp, proof force sensor group and this 6 part of proof force value display; Described bidirectional hydraulic control module is made of oil circuit cross-over valve, bidirectional hydraulic lock and oil cylinder; Described unidirectional oil return apparatus is made of oil accumulator, retaining valve and oil return conduit; Described calibration unit clamp is made of housing, level governor, weighing bracket, upper and lower bottom plate, upper and lower bottom plate anchor clamps, level meter and the coaxial anchor clamps of sensor; Described power value display is made of power value capture card, data processing unit, power value display unit and calibration special module.
As shown in drawings, the annexation of each parts of the present invention is: housing 13 is peripheral casing, inner oil cylinder 9, oil circuit cross-over valve 8, bidirectional hydraulic lock 7 and the return line placed.Bidirectional hydraulic lock 7 is connected with unidirectional quantitative hydraulic pump 1 usefulness hydraulic hose; The piston top of oil cylinder 9 connects lower shoe anchor clamps 18, lower shoe anchor clamps connection standard power sensor 5, the coaxial anchor clamps 21 of proof force sensor top connecting sensor, the coaxial anchor clamps of sensor top connects by the dynamometry sensor, connected upper plate anchor clamps 19 by dynamometry sensor top, upper and lower base plate anchor clamps connect weighing bracket 15.Simultaneously, proof force sensor 5 links to each other with proof force value display 6, and tested sensor is connected with tested sensor force value display.
Described portable calibrating device for pull pressure sensor wherein, is connected standard transducer with tested sensor " back-to-back " coaxial rigid, bear the power of equidirectional and size to guarantee standard transducer and tested sensor.
Described portable calibrating device for pull pressure sensor, wherein, the calibration unit clamp is the calibration clamp with " angled pin ", and this angled pin is mutually vertical with weighing bracket, and its effect is that the deformation that guarantees calibration clamp can not exert an influence to the force measurement result.
Described portable calibrating device for pull pressure sensor, wherein, described calibrating installation is applicable to height to the continuous loading of the bidirectional force of 100000N range.
Described portable calibrating device for pull pressure sensor, wherein, described calibrating installation calibration accuracy reaches 0.05%.
Described portable calibrating device for pull pressure sensor, wherein, described calibrating installation possesses little volume to 26cm * 21cm * 82cm and light weight to 50KG.
Described portable calibrating device for pull pressure sensor, wherein, described power value display (6) can compatible 7 standard transducers.
The present invention has following beneficial effect:
Portable pressure calibrating installation provided by the invention can be applied to the force measurement of the calibration of airplane hydraulic pressure gear train, the maintenance of weaponry pressure multi-function test stand and the multiple vertical load of industrial circle mechanism, as long as be used for measuring the power sensor in two-way 100000N (10 tons) the static force value scope, all can on the basis of the corresponding anchor clamps of design, use this calibrating installation to calibrate.
Will also be appreciated that above embodiment only is the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement also are considered as protection scope of the present invention.
Description of drawings
Fig. 1: the portable calibrating device for pull pressure sensor schematic diagram, wherein each component names and Reference numeral is corresponding as follows: unidirectional quantitative hydraulic pump 1, bidirectional hydraulic control module 2, unidirectional oil return apparatus 3, calibration unit clamp 4, proof force sensor 5 and proof force value display 6;
Fig. 2: bidirectional hydraulic control module structural drawing, wherein each component names and Reference numeral is corresponding as follows: unidirectional quantitative hydraulic pump 1, oil circuit cross-over valve 7, bidirectional hydraulic lock 8 and oil cylinder 9;
Fig. 3: unidirectional oil return apparatus synoptic diagram, wherein each component names and Reference numeral is corresponding as follows: unidirectional quantitative hydraulic pump 1, oil circuit cross-over valve 7, bidirectional hydraulic lock 8 and oil cylinder 9, oil accumulator 10, retaining valve 11 and oil return conduit 12; And
Fig. 4: special-purpose calibration clamp synoptic diagram, wherein each component names and Reference numeral is corresponding as follows: the coaxial anchor clamps 21 of housing 13, level governor 14, weighing bracket 15, lower shoe 16, upper plate 17, lower shoe anchor clamps 18, upper plate anchor clamps 19, level meter 20 and sensor.
Embodiment
Patent of the present invention is described further with specific embodiment below in conjunction with accompanying drawing.
As shown in drawings:
Portable calibrating device for pull pressure sensor of the present invention is made of unidirectional quantitative hydraulic pump 1, bidirectional hydraulic control module 2, unidirectional oil return apparatus 3, calibration unit clamp 4, proof force sensor 5 and proof force value display 6 these 6 parts; Described bidirectional hydraulic control module 2 is made of oil circuit cross-over valve 7, bidirectional hydraulic lock 8 and oil cylinder 9; Described unidirectional oil return apparatus 3 is made of oil accumulator 10, retaining valve 11 and oil return conduit 12; Described calibration unit clamp 4 is made of the coaxial anchor clamps 21 of housing 13, level governor 14, weighing bracket 15, lower shoe 16, upper plate 17, lower shoe anchor clamps 18, upper plate anchor clamps 19, level meter 20 and sensor;
Wherein, described special-purpose calibration clamp 4 needs the whole series to be used, and each screw flight that forms special-purpose calibration clamp 4 has adopted the design of intensification refinement, is in order to reduce the uncertainty that deformation brings that contacts between screw thread and sensor.In addition, install in the process of this calibrating installation, installation steps are very crucial, must install according to the program of setting, with the position science guaranteeing to install, rationally, especially when described calibration clamp is installed, needs to use and decide torque wrench and reinforce, the identical installing force of coaxial upper use guarantees that the power sensor is in the identical force environment under original state.
The portable calibrating device for pull pressure sensor working method that present embodiment provides is as follows:
At first, the preliminary work before calibrating comprises 1. device installation and the 2. preliminary work of two parts of full scale precompressed.
1. device is installed: as shown in Figure 4, from bottom to top with lower floor 16, lower floor anchor clamps 19, proof force sensor 5, the coaxial anchor clamps 21 of sensor, installed successively by dynamometry sensor (by the dynamometry sensor between the coaxial anchor clamps 21 of upper plate anchor clamps 19 and sensor), upper plate anchor clamps 19, upper plate 17; Adjust the state that upper plate anchor clamps 19, the coaxial anchor clamps 21 of sensor are in sensor just not stress, with level governor 14 with the single unit system leveling, unidirectional quantitative hydraulic pump 1 is connected with oil circuit cross-over valve 7, opens proof force value display 6 power supplys and carry out preheating.
2. full scale precompressed:
Establishing criteria dynamometer vertification regulation is at first to being carried out two-way full scale precompressed by the dynamometry sensor; Open the switch of unidirectional quantitative hydraulic pump 1, move oil circuit cross-over valve 7 to " pressing to " position, make proof force sensor 5 and born in the same way the together pressure of value by the dynamometry sensor.In the pressure process, observation caliber power value displayed value 6 when reaching full scale, is moved oil circuit cross-over valve 7 to " stopping " position simultaneously, opens the oil return switch on the unidirectional quantitative hydraulic pump 1, at this moment, because the hydraulic pressure that throw of poston causes begins oil return; Close the oil return switch, oil circuit cross-over valve 7 moved on the position of " pulling to ", continue observation caliber power value display 6. when reach tested sensor pull to full scale the time, move the oil circuit cross-over valve to " stopping " position.
Secondly, pull to calibration process, take the pull pressure sensor of 50000N as example, comprise following four steps:
1. select calibrated channel: at first proof force value display is pulled to passage (concrete establishing method and channel number see equipment operating manual for details) be chosen for 50000N by the measurement passage of dynamometry value display, carry out the setting of range, resolution and unit.
2. choose the calibrated force value point of tested sensor according to rules, control unidirectional quantitative hydraulic pump 1 and pressurize, by the time the power value show stable after, observe and record standard power value display 6 and by the reading of dynamometry value display.The difference of two display numerical value is by the calibration error of school sensor.
3. the selection of power value point is according to from small to large order, when carrying out pick up calibration, and need to calibrating one by one smoothly according to power value point.After each survey time is finished, make calibrating installation turn back to zero point, duplicate measurements.
4. carry out the calculating of indices according to measurement result.
At last, press to calibration process: it is basic identical with pulling to calibration process operation to press to calibration process, and different is that calibrate the position that oil circuit cross-over valve 7 need to be moved to " pulling to ".
Claims (7)
1. calibrating installation that is used for aircraft evelvator control system pull pressure sensor, it is characterized in that: described device is by this 6 part formation of unidirectional quantitative hydraulic pump (1), bidirectional hydraulic control module (2), unidirectional oil return apparatus (3), calibration unit clamp (4), proof force sensor (5) and proof force value display (6); Described bidirectional hydraulic control module (2) is made of oil circuit cross-over valve (7), bidirectional hydraulic lock (8) and oil cylinder (9); Described unidirectional oil return apparatus (3) is made of oil accumulator (10), retaining valve (11) and oil return conduit (12); Described calibration unit clamp (4) is made of housing (13), level governor (14), weighing bracket (15), lower shoe (16), upper plate (17), lower shoe anchor clamps (18), upper plate anchor clamps (19), level meter (20) and the coaxial anchor clamps of sensor (21).
2. calibrating installation according to claim 1, it is characterized in that: the calibration unit clamp is the calibration clamp with " angled pin ", this angled pin is mutually vertical with weighing bracket, and its effect is that the deformation that guarantees calibration clamp does not exert an influence to the force measurement result.
3. calibrating installation according to claim 1 is characterized in that: standard transducer is connected with tested sensor " back-to-back " coaxial rigid, bears the power of equidirectional and size to guarantee standard transducer and tested sensor.
4. calibrating installation according to claim 1, it is characterized in that: described calibrating installation is applicable to the continuous loading of the bidirectional force of 100000N range.
5. calibrating installation according to claim 1, it is characterized in that: described calibrating installation calibration accuracy reaches 0.05%.
6. calibrating installation according to claim 1, it is characterized in that: described calibrating installation possesses the weight of volume and the 50KG of 26cm * 21cm * 82cm.
7. calibrating installation according to claim 1 is characterized in that: described proof force value display (6) can compatible 7 proof force sensors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010204961 CN101865750B (en) | 2010-06-22 | 2010-06-22 | Portable calibrating device for pull pressure sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010204961 CN101865750B (en) | 2010-06-22 | 2010-06-22 | Portable calibrating device for pull pressure sensor |
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| CN101865750A CN101865750A (en) | 2010-10-20 |
| CN101865750B true CN101865750B (en) | 2013-10-30 |
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| CN 201010204961 Expired - Fee Related CN101865750B (en) | 2010-06-22 | 2010-06-22 | Portable calibrating device for pull pressure sensor |
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Application publication date: 20101020 Assignee: Air Beijing Aviation Technology Co., Ltd. Assignor: Hu Zhuolin|Mao Hongyu Contract record no.: 2014990000379 Denomination of invention: Portable calibrating device for pull pressure sensor Granted publication date: 20131030 License type: Exclusive License Record date: 20140606 |
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