CN109282927A - A kind of axis torch measuring system and measurement method - Google Patents
A kind of axis torch measuring system and measurement method Download PDFInfo
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- CN109282927A CN109282927A CN201811380225.9A CN201811380225A CN109282927A CN 109282927 A CN109282927 A CN 109282927A CN 201811380225 A CN201811380225 A CN 201811380225A CN 109282927 A CN109282927 A CN 109282927A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/105—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving inductive means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a kind of axis torch measuring system and measurement methods, it includes the first magnetic grid, second magnetic grid, first sensory package, second sensory package and processor, first magnetic grid and the second magnetic grid are arranged at intervals at the surface of axis to be measured, and it is respectively provided with the first seam and the second seam, first sensory package includes first detecting part of two radial directions along axis to be measured towards the first magnetic grid, second sensory package includes second detecting part of two radial directions along axis to be measured towards the second magnetic grid, two the first detecting parts and two the first detecting parts sense the first magnetic grid and the second magnetic grid rotated with axis to be measured respectively, and the first sensing signal and the second sensing signal are generated respectively, processor receives and processes the first sensing signal and the second sensing signal, to obtain the torque of axis to be measured.Axis torch measuring system of the invention and measurement method, are not only capable of measuring the torque of the axis to be measured of different-diameter, and high resolution, and the precision of measurement result is high.
Description
Technical field
The present invention relates to axis torque measurement field more particularly to a kind of axis torch measuring system and measurement methods.
Background technique
In machine driven system, torque is one of the most typically mechanical quantity for reflecting production equipment system performance, torque
Measurement and analysis are also the normal operation for guaranteeing various production equipments and ancillary equipment, reduce energy consumption and improve efficiency important
Means, therefore improve accuracy, the reliability of torque monitoring and the real-time of control and torque anomaly analysis of torque measurement
It necessarily can be reduced the generation of accident, improve the utilization rate of production equipment.In other words, the on-line monitoring of torque is to non-plan repair
Time reduction and the reduction of accident rate, analysis cause an accident or the efficiency of failure cause and production efficiency and economic benefit
Raising suffer from important meaning.
With the development of progress and the production of science and technology, torque measurement techniques have more and more wide application prospect.
Monitoring of the modern mechanical product all in the development to high-power, high speed, miniaturization, to various dynamic power machine operating statuses
It is particularly important with fault identification forecast, especially large-scale, critical, without deposit mechanical equipment, such as heavy duty
Ling-distance truck, powerful underwater structure, the main shaft on naval vessel etc..When control system corresponding frequencies and the intrinsic frequency of transmission shaft system
When rate is close or equal, it will result in electromechanical lotus root and be in step with resonance, current oscillation will be serious to the operation of mechanical equipment generation
It influences, and then is delayed production plan, cause damages.
For example, develop with ship to the direction of enlargement, high speed and automation, the rapidity of ship, efficiently
Benefit, economy etc., it has also become the important indicator of shipbuilding, and as the important means for calculating transfer efficiency, the measurement of shaft power is
Shipyard and shipowner check and accept the major parameter of new shipbuilding oceangoing ship.The condition of vessel motion is sufficiently complex, and ship-machine-paddle matching is to host
Performance has very big influence, and when machine-paddle mismatches, host may be unable to reach its rated power, and ship, which cannot reach, to be set
The speed of a ship or plane is counted, alternatively, host is more than rated power operation, causes host overload to use, service life greatly shortens.And the axis of ship
Power and torch measuring system, it passes through the measurement of the shaft power to host under different operating conditions, it will be appreciated that and detect hull-
Match condition between host-propeller three monitors the operating status of hull in real time, can also be to obsolete vessel ship-machine-
Paddle working condition and failure make diagnosis.As one of most important performance parameter of marine main engine, shaft power generally by
It connects measurement torque and revolving speed is calculated and obtained, and then output power is compared with oil consumption, to avoid excessively making for engine
With in this way, ship can not only be made to keep or reasonably improve speed, moreover it is possible to save great amount of fuel oil, reduce carbon dioxide and nitrogen oxygen
The discharge of compound.
With regard to the measurement of shaft power, development trend is, from static test to dynamic test development, from contact type measurement to non-
Contact type measurement development, with going deep into for technical research, test macro is also all towards volume miniaturization, displaying digitized, system
Intelligent, monitoring real time implementation direction is developed, meanwhile, the requirement to the precision of measurement, accuracy and resolution ratio is all with city
Field demand constantly improves.
With current the most widely used Axis Power Measurement System " KONGSBERG shaft power instrumentSystem "
It is the Axis Power Measurement System based on phase-difference type, this is for the photoelectric non-contact type rotation axis torch measuring system of representative
System mainly uses optoelectronic switch sensor, including optoelectronic switch, photoelectric code disk, controller, computer and interlock circuit, coding
Wheel is fixedly mounted on the rotating shaft, and the notch of optoelectronic switch faces code wheel, and is fixed on the edge of code wheel, works as code wheel
When rotating with measured axis, the optical path between the photoelectric detector and light emitting diode of optoelectronic switch is periodically turned on or is closed
It closing, optoelectronic switch exports the alternate pulse of synperiodic opening and closing, and the electric signal that controller transmits optoelectronic switch is handled, with
True phase signal is obtained, and the phase signal is stored in data cell, is then transmitted to single-chip microcontroller, single-chip microcontroller
The velocity amplitude of binding assay calculates the torque and shaft power of rotation axis, and then the numerical value in controller is carried out mathematics by computer
Statistics, data analysis, and graphically show.
Currently, the axis torch measuring system based on photoelectric technology, since the accuracy of its measurement depends on to a certain extent
The accurate installation of read head, therefore installation requirement when its use is high, setter needs to have enough experiences, and installation has comparable
Difficulty, meanwhile, the performance in terms of resolution ratio and sensitivity is also gradually unable to satisfy actual requirement.
Summary of the invention
Embodiments of the present invention provide a kind of axis torch measuring system and measurement method, to solve existing axis torque measuring
Measure the problem that systemic resolution is low, sensitivity is low and installation difficulty is high.
In order to solve the above technical problem, the present invention provides a kind of axis torch measuring systems comprising the first magnetic grid, second
Magnetic grid, the first sensory package, the second sensory package and processor, the first magnetic grid and the second magnetic grid are arranged at intervals at axis to be measured
On surface, and it is respectively provided with the first seam and the second seam, the first sensory package and the second sensory package are respectively provided with two
One detecting part and two the second detecting parts, two the first detecting part interval settings, and respectively along the radial direction of axis to be measured
Towards the first magnetic grid, the first magnetic grid that two the first detecting parts sensings are rotated with axis to be measured to generate the first sensing signal,
Two the second detecting part interval settings, and respectively along the radial direction of axis to be measured towards the second magnetic grid, two second sense
Portion's sensing generates the second sensing signal with the second magnetic grid that axis to be measured rotates, and processor receives and processes the first sensing letter
Number with the second sensing signal, to obtain the torque of axis to be measured.
According to an embodiment of the present invention, two above-mentioned first detecting parts and two the second detecting parts are respectively provided with magnetic
Head, magnetic head the first magnetic grid of direction of each first detecting part, the second magnetic grid of magnetic head of each second detecting part.
According to an embodiment of the present invention, the thickness of above-mentioned first magnetic grid and the second magnetic grid between 1.0mm~1.5mm it
Between, and the air gap between the air gap and the second detecting part and the second magnetic grid between the first detecting part and the first magnetic grid is between 0.5mm
Between~1.5mm.
According to an embodiment of the present invention, above-mentioned each first detecting part and each second detecting part are respectively provided with MR biography
Sensor and two Hall sensors, two Hall sensors are symmetrically disposed on the two sides of MR sensor, and the MR of the first detecting part
The radial direction arrangement and the first magnetic grid of direction of sensor and two Hall sensors along axis to be measured, each second detecting part
MR sensor and two Hall sensors along the radial direction arrangement of axis to be measured and towards the second magnetic grid, wherein first passes
Feel the first analog signal caused by two Hall sensors of the component by each first detecting part and alternately receives two first
First sensing signal caused by the MR sensor of one of detecting part, wherein the second sensory package passes through each second detecting part
Two Hall sensors caused by the second analog signal alternately receive the MR sensor institute of one of two second detecting parts
The second sensing signal generated.
According to an embodiment of the present invention, the MR for two the first detecting parts that above-mentioned processor integration alternately receives is passed
First sensing signal caused by sensor is the first transducing signal, two the second detecting parts that processor integration alternately receives
Second sensing signal caused by MR sensor is the second transducing signal, and processor is believed according to the first transducing signal and the second sensing
Number obtain the torque of axis to be measured.
According to an embodiment of the present invention, between the Hall sensor and MR sensor in two above-mentioned first detecting parts
Distance be greater than the pole pitch of the first magnetic grid, the distance between Hall sensor and MR sensor in each second detecting part are greatly
In the pole pitch of the second magnetic grid.
It according to an embodiment of the present invention, further include display module, processor is passed according to the first transducing signal and second
Feel signal and obtain measurement result, and display signal is generated according to measurement result, and transmission displays signal to display module, shows mould
Root tuber shows the torque of axis to be measured according to display signal.
It according to an embodiment of the present invention, further include magnetic grid protective layer, magnetic grid protective layer is set to the first magnetic grid and
The surface far from axis to be measured of two magnetic grids.
A kind of axis torque measuring method using above-mentioned axis torch measuring system comprising step: the first magnetic grid of installation
With the second magnetic grid in the surface of axis to be measured, and corresponding first magnetic grid and the second magnetic grid install the first sensory package and the second sensing
Component drives axis to be measured to rotate, and the first sensory package and the second sensory package are respectively induced first turned with axis to be measured
Magnetic grid and the second magnetic grid, and generate the first sensing signal and the second sensing signal respectively, processor handle the first sensing signal with
Second sensing signal, to obtain the torque of axis to be measured.
According to an embodiment of the present invention, two above-mentioned first detecting parts sense first with axis to be measured rotation respectively
In the step of magnetic grid and the first sensing signal of generation, one of two first detecting parts are selected, the first detecting part selected
MR sensor senses the first magnetic grid rotated with axis to be measured, and generates the first sensing signal；The first detecting part selected
Hall sensor sense the first seam and generate discontinuous first analog signal, switch to another the first detecting part
MR sensor senses the first magnetic grid rotated with axis to be measured, and generates another first sensing signal, and two second
In the step of detecting part senses the second magnetic grid with axis to be measured rotation respectively and generates the second sensing signal, two second are selected
One of detecting part, the MR sensor of the second detecting part selected senses the second magnetic grid rotated with axis to be measured, and produces
Raw second sensing signal；The Hall sensor of the second detecting part selected senses the second seam and generates discontinuous second
Analog signal, the MR sensor for switching to another the second detecting part senses the second magnetic grid rotated with axis to be measured, and produces
Another raw described second sensing signal.
In embodiments of the present invention, axis torch measuring system of the invention and measurement method will have first to connect
First magnetic grid of seam is arranged at intervals at the surface of axis to be measured, axis rotation to be measured and band with the second magnetic grid with the second seam
Dynamic first magnetic grid and the second magnetic grid, the first sensory package sense the first magnetic grid of rotation, and export the first sensing signal,
The second sensory package senses the second magnetic grid of rotation simultaneously, and exports the second sensing signal, and then processor receives simultaneously
Handle the first sensing signal and the second sensing signal, to obtain the torque of axis to be measured, in this way, can not only to different-diameter to
It measures axis and carries out torque measurement, moreover it is possible to which the accuracy for improving torque measurement obtains the higher measurement result of reliability.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright schematic present embodiment and its explanation is used to explain the present invention, and is not constituted improper limitations of the present invention.In attached drawing
In:
Fig. 1 is the block diagram of axis torch measuring system of the invention；
Fig. 2 is the scheme of installation of axis torch measuring system of the invention；
Fig. 3 is the block diagram of the first sensory package of axis torch measuring system of the invention；
Fig. 4 is the schematic diagram that the first sensory package of axis torch measuring system of the invention senses the first magnetic grid；
Fig. 5 is the enlarged drawing of the a-quadrant of Fig. 4.
Specific embodiment
Below in conjunction with the attached drawing in present embodiment of the present invention, the technical solution in present embodiment of the present invention is carried out
It clearly and completely describes, it is clear that described present embodiment is one embodiment of the present invention, rather than this whole realities
Apply mode.Based on the present embodiment in the present invention, those of ordinary skill in the art are without creative efforts
Every other present embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 and Fig. 2 are please referred to, is the block diagram and scheme of installation of axis torch measuring system of the invention respectively.Such as figure
Axis torch measuring system 1 shown, that present embodiment provides comprising the first magnetic grid 10, the second magnetic grid 11, the first sensory package
12, the second sensory package 13 and processor 14, wherein the first magnetic grid 10 and the second magnetic grid 11 are arranged at intervals at the table of axis 2 to be measured
Face, the first magnetic grid 10 and the second magnetic grid 11 are looped around axis 2 to be measured respectively, have the first seam between the both ends of the first magnetic grid 10
101, there is between the both ends of the second magnetic grid 11 second seam 111, the width of the first seam 101 and the second seam 111 according to
Depending on the circumference and the first magnetic grid 10 of measurement axis 2 and the length of the second magnetic grid 11, i.e. the first seam 101 and the second seam 111
Width be axis 2 to be measured circumference subtract each other respectively with the first magnetic grid 10 and the second magnetic grid 11.
There are two the first detecting parts 120 for first sensory package 12 tool, and two the first detecting parts 120 are along axis 2 to be measured
The setting of radial direction interval, and it senses direction respectively along radial direction the first magnetic grid 10 of direction of axis 2 to be measured.Second passes
The tool of component 13 is felt there are two the second detecting part 130, and two the second detecting parts 130 are set along the radial direction interval of axis 2 to be measured
It sets, and it senses direction respectively along radial direction the second magnetic grid 11 of direction of axis 2 to be measured.First sensory package 12 and second
Processor 14 is electrically connected in sensory package 13.
When axis 2 to be measured rotation, the first magnetic grid 10 and the second magnetic grid 11 is driven to rotate, the two of the first sensory package 12
A first detecting part 120 senses the first magnetic grid 1 of rotation respectively to generate the first sensing signal.Meanwhile second sensory package 13
Two the second detecting parts 130 sense the second magnetic grid 11 of rotation respectively to generate the second sensing signal.First sensory package 12
The first sensing signal and the second sensing signal are sent to processor 14 respectively with the second sensory package 13, the processing of processor 14 connects
The first sensing signal and the second sensing signal received, and obtain the torque of axis 2 to be measured.
It is the block diagram of the first sensory package of axis torch measuring system of the invention please continue to refer to Fig. 3.As schemed
Show, in present embodiment, first detecting part 120 of each of first sensory package 12 has MR sensor and two hall sensings
Device, two Hall sensors are symmetrically disposed on the two sides of MR sensor, and each first detecting part 120 has a magnetic head, and each first
The magnetic head of detecting part 120 is respectively facing the first magnetic grid 10, to be sensed to the first magnetic grid 10, and each Hall sensor and MR
The distance between sensor is greater than a pole pitch of the first magnetic grid 10.The MR sensor of each first detecting part 120 and two
The sensing direction of Hall sensor along the radial direction of axis 2 to be measured towards the first magnetic grid 10, and each MR sensor with suddenly
You are electrically connected in processor 14 sensor.
When carrying out torque measurement, the MR sensor of each first detecting part 120 is produced axis torch measuring system 1 of the invention
Raw first sensing signal, and MR sensor exports the first sensing signal to processor 14, the Hall of each first detecting part 120 passes
Generate the first analog signal when corresponding first magnetic grid 10 of sensor, and Hall sensor exports the first analog signal to processor 14,
And when Hall sensor the first seam 101 of correspondence of the first detecting part 120, Hall sensor does not generate the first analog signal, and
The output of the first analog signal is interrupted, until the first seam 101 produces the sensing range of Hall sensor in rotation, Hall is passed
Sensor continues to generate and export the first analog signal, i.e. Hall sensor generates discontinuous first analog signal.Processor 13
According to the first analog signal of Hall sensor output it is continuous whether select to receive the first of the output of two MR sensors and sense
One in signal.
It referring to Figure 4 together, is the first sensory package of axis torch measuring system of the invention to the progress of the first magnetic grid
The schematic diagram of sensing.As shown, the rotation direction of axis 2 to be measured is the first seam clockwise in present embodiment
101 move closer to 120 sensing range of the first detecting part on right side on figure, enter first sense on the upper right side of figure in the first seam 101
Before the sensing range of the Hall sensor in survey portion 120, processor 14 receives the MR sensor of first detecting part 120 on the upper right side of figure
First sensing signal of output.
With the lasting rotation of axis 2 to be measured, the first seam 101 enters being located at for first detecting part 120 on the upper right side of figure
First detecting part 120 on the upper right side of the sensing range of the Hall sensor on the right side of MR sensor, i.e. figure is located at the MR sensor right side
When the sensing direction of the Hall sensor of side is towards the surface for the axis to be measured 2 being located in the first seam 101, on figure on the right side of the
The Hall sensor of one detecting part 120 being located on the right side of MR sensor can not generate the first analog signal, at this point, the upper right side of figure
The Hall sensor of first detecting part 120 being located on the right side of MR sensor interrupts the output of the first analog signal, i.e. the upper right side of figure
The first detecting part 120 be located at MR sensor on the right side of Hall sensor output the first analog signal it is discontinuous, work as processing
When the first analog signal that device 14 receives is discontinuous, judgement is located at the MR sensor of first detecting part 120 on the upper right side of figure
Close to the first seam 101, i.e. the MR sensor of first detecting part 120 on the upper right side of figure is upper right based on scheming close to the first seam 101
For the MR sensor of first detecting part 120 of side close to the judgement of the first seam 101, processor 14, which interrupts, receives the of the upper right side of figure
First sensing signal of the MR sensor output of one detecting part 120, and switch the MR sensor for receiving another first detecting part 120
First sensing signal of output, i.e., what the MR sensor for the first detecting part 120 that processor 14 receives figure upper left side at this time exported
First sensing signal.
Axis 2 to be measured continues to drive the rotation of the first magnetic grid 10, when the first seam 101 enters the first detecting part of figure upper left side
The MR that is located at of the sensing range of 120 Hall sensor being located on the right side of MR sensor, the first detecting part 120 of figure upper left side is passed
The sensing direction of Hall sensor on the right side of sensor can not be produced towards the surface for the axis to be measured 2 being located in the first seam 101
Raw first analog signal, at this point, the Hall sensor of the first detecting part 120 of figure upper left side being located on the right side of MR sensor interrupts
The Hall sensor of the output of first analog signal, i.e. the first detecting part 120 of figure upper left side being located on the right side of MR sensor is defeated
The first analog signal out is discontinuous, and when the first analog signal that processor 14 receives is discontinuous, judgement is located on figure
The MR sensor of first detecting part 120 in left side judges the first detecting part 120 of figure upper left side close to the first seam 101
MR sensor is close to the first seam 101, and the MR sensor of the first detecting part 120 based on figure upper left side is close to the first seam 101
Judgement, processor 14 interrupt receive figure upper left side the first detecting part 120 MR sensor output the first sensing signal, and
The first sensing signal for receiving the MR sensor output of another first detecting part 120 is switched to, i.e. this processor 14 receives on figure
First sensing letter of the MR sensor output of first detecting part 120 on right side.
When the first seam 101 of rotation is again introduced into the sensing of the Hall sensor of first detecting part 120 on right side on figure
Range, processor 14 switch received first sensing signal of institute, such cyclic switching again, and processor 14 persistently receives the first biography
Feel the first sensing signal of two the first detecting parts 120 output of component 12, and by the two of the first sensory package 12 received
The first sensing signal that a first detecting part 120 exports is integrated into the first transducing signal.
Likewise, if when the rotation direction of axis to be measured 2 is counter clockwise direction, processor 14 first receives in figure on the left of the
First sensing signal of the MR sensor output of one detecting part 120, when the first seam 101 rotated counterclockwise enters left side in figure
The first detecting part 120 Hall sensor sensing range, processor 14 interrupt receive figure in left side the first detecting part 120
The output of MR sensor the first sensing signal, and the MR sensor for switching in reception figure first detecting part 120 on right side is defeated
The first sensing signal out, when the first seam 101 continued to rotate enters the hall sensing of first detecting part 120 on right side in figure
The sensing range of device, processor 14 interrupt the first sensing signal for receiving the MR sensor output of first detecting part 120 on right side,
And switch to the first sensing signal of the MR sensor output of first detecting part 120 in left side in reception figure.In this way, constantly recycling
Switching, processor 14 persistently receive the first sensing signal of two the first detecting parts 120 output of the first sensory package 12, and will
First sensing signal of two the first detecting parts 120 output of the first sensory package 12 received is integrated into the first sensing letter
Number.
Be same as the first sensory package 12, second detecting part 130 of each of second sensory package 13 also have MR sensor with
Two Hall sensors, two Hall sensors are symmetrically disposed on the two sides of MR sensor, and each second detecting part 130 has magnetic
Head, the magnetic head of each second detecting part 130 are respectively facing the second magnetic grid 11, to sense to the second magnetic grid 11, and each suddenly
Your the distance between sensor and MR sensor are greater than a pole pitch of the second magnetic grid 11.The MR of each second detecting part 130
Sensor and two Hall sensors along the radial direction of axis 2 to be measured towards the second magnetic grid 11, and each MR sensor with
Hall sensor is electrically connected in processor 14.The MR sensor of each second detecting part 130 generates the second sensing signal,
And MR sensor exports the second sensing signal to processor 13.Corresponding second magnetic of the Hall sensor of each second detecting part 130
Generate the second analog signal when grid 11, and Hall sensor exports the second analog signal to processor 14, and the second detecting part 130
Hall sensor corresponding second seam 111 when, Hall sensor does not generate the second analog signal, and interrupts the second analog signal
Output, until the second seam 111 produces the sensing range of Hall sensor in rotation, Hall sensor continues to generate and defeated
Second analog signal out.The second analog signal that processor 14 is exported according to Hall sensor it is continuous whether alternately receive two
One in second sensing signal of MR sensor output.In other words, the first magnetic grid 10 is sensed with the first sensory package 12
Principle it is identical, two the second detecting parts 130 of the second sensory package 13 export the second sensing signal, 14 basis of processor respectively
The interruption selection of second analog signal of the Hall sensor output of second detecting part 130 in two receive another the
Second sensing signal of the MR sensor output of two detecting parts 130, and principle cyclic switching receives two the second detecting parts accordingly
Second sensing signal of 130 MR sensor output, then exports the MR sensor of receive two the second detecting parts 130
The second sensing signal be integrated into the second transducing signal, complete the sensing to the second magnetic grid 11.
It should be noted that the MR sensor of two the first detecting parts 120 carries out the of sensing generation to the first magnetic grid 10
The second sensing that the MR sensor of one sensing signal and two the second detecting parts 130 carries out sensing generation to the second magnetic grid 11 is believed
Number it is pulse signal, can be calculated on axis 2 to be measured by the pulse signal of the MR sensor output of two the first detecting parts 120
The position angle of the point of corresponding two the first detecting parts 120 passes through the pulse of the MR sensor output of two the second detecting parts 130
Signal can calculate the position angle of the point of corresponding two the second detecting parts 130 on axis 2 to be measured.In other words, processor 14
The position angle that the point of corresponding two the first detecting parts 120 on axis 2 to be measured can be calculated by the first transducing signal, can also lead to
Cross the position angle that the second transducing signal calculates the point of corresponding two the second detecting parts 130 on axis 2 to be measured.Using this hair
When bright axis torch measuring system 1, the first sensory package 12 can be zero point with the first seam 101, and the second sensory package 13 can
To be zero point with the second seam 111, when the first magnetic grid 10 and the second magnetic grid 11 as axis 2 to be measured rotates one week, pass through first
The first analog signal that the Hall sensor of sensory package 12 and the second sensory package 13 exports can be caught with the second analog signal
Corresponding zero point is obtained, and then starts to export the absolute position angle of axis 2 to be measured.In other words, the first magnetic grid 10 at this time with
The combination of first sensory package 12 and the combination of the second magnetic grid 11 and the second sensory package 13 are equivalent to two sets of increment type codings
Device, the first magnetic grid 10 and the second magnetic grid 11 rotate one week with axis 2 to be measured, can pass through the first analog signal and the second simulation
Signal finds preset zero point.
The mode that 2 torque of axis to be measured is calculated the following detailed description of processor 14, when axis 2 to be measured is along its axis direction
When rotating, 2 maximum stress of axis to be measured is distributed in its surface, stress expression formula are as follows:
In formula:
MxTorque on the cross section of-axis 2 to be measured；
ρ-arbitrary point is to circle center distance；
IP- polar moment of inertia.
D is the radius of axis 2 to be measured in formula.
And the expression formula of the stress and strain of axis 2 to be measured are as follows:
τ=Gr
In formula:
G-the coefficient of rigidity, general steel G are 80GPa,
In formula:
μ-Poisson's ratio
When axis 2 to be measured rotates along its axis direction, strain are as follows:
In formula:
I.e. as G=80GPa,OrIn formula l be measurement to
Measure the distance between two o'clock on axis 2.
In this way, the big of torque suffered by axis 2 to be measured can be calculated by measuring the deflection on axis 2 to be measured between two o'clock
It is small.In other words, torque suffered by axis 2 to be measured can be calculated by measuring the angle change on axis 2 to be measured between two o'clock
Size.In this way, on the surface that the first magnetic grid 10 and the second magnetic grid 11 are installed on to axis 2 to be measured, and corresponding first magnetic grid 10 with
Second magnetic grid 11 installs the first sensory package 12 and the second sensory package 13, then measure on axis 2 to be measured between two o'clock away from
From driving axis 2 to be measured to rotate, the first sensory package 12 and the second sensory package 13 can be respectively induced with axis 2 to be measured
The first magnetic grid 10 and the second magnetic grid 11 of rotation, and the first sensing signal and the second sensing signal are generated respectively, and processor 14
When receiving the first sensing signal and the second sensing signal, the first sensing signal received and the second sensing are first integrated respectively
Signal, with the first transducing signal of corresponding first sensing signal of acquisition and the second transducing signal of corresponding second sensing signal, and
It is obtained according to the distance between two o'clock on the first transducing signal, the second transducing signal and axis to be measured 2 by above-mentioned calculation
The torque instant to axis 2 to be measured.And its precision for measuring torque and the first detecting part 120 and the second detecting part 130
The size of distance of the axial direction along axis 2 to be measured be inversely proportional, during installation, as long as the first magnetic grid 10 and the second magnetic grid
Mounting distance between 11 is arranged bigger, and axis torch measuring system 1 of the invention is to the torque measurement result of axis 2 to be measured
Precision is higher.
In present embodiment, the distance between two o'clock on axis 2 to be measured is measured using range finder, due to the first detecting part
The magnetic head of the MR sensor of the magnetic head of 120 MR sensor and the second detecting part 130 is distinguished along the radial direction of axis 2 to be measured
Towards the first magnetic grid 10 and the second magnetic grid 11, i.e. the magnetic head of the MR sensor of the first detecting part 120 and the second detecting part 130 respectively
The magnetic head of MR sensor be respectively facing the two o'clock on axis 2 to be measured along the radial direction of axis 2 to be measured, so axis to be measured
The position of any of 2 is the position of the first magnetic grid 10 of the magnetic head institute direction of the MR sensor of corresponding first detecting part 120, to be measured
The position for measuring another point on axis 2 is the position for corresponding to the second magnetic grid 11 of the magnetic head institute direction of MR sensor of the second detecting part 130
It sets, in other words, measures the MR sensor that the distance between two o'clock on axis 2 to be measured is equal to measurement with the first detecting part 120
Magnetic head corresponding first magnetic grid 10 position and second magnetic grid 11 corresponding with the magnetic head of MR sensor of the second detecting part 130
The distance of the axial direction along axis 2 to be measured of position, range finder therein can use airborne laser range finder, ultrasonic distance measurement
Device or other range finders that precise distance measurement may be implemented.
Though in this way, axis torch measuring system 1 of the invention using with the first seam 101 the first magnetic grid 10 with the
Second magnetic grid 11 of two seams 111 so passes through above-mentioned axis torque measuring method pair using axis torch measuring system 1 of the invention
Axis 2 to be measured carries out the influence that torque measurement is avoided that the first seam 101 and the second seam 111, and processor 14 can pass through first
Sensing signal and the second sensing signal integrate out the first transducing signal and the second transducing signal respectively, and then are believed according to the first sensing
Number, the distance between two o'clock calculates the torque of axis 2 to be measured on the second transducing signal and axis 2 to be measured.
Further, processor 14 can also obtain the position of axis 2 to be measured by the first transducing signal and the second transducing signal
Angle setting degree, axis to be measured 2 two o'clock between position angle it is poor, while the revolving speed of axis 2 to be measured can also be obtained, in this way, using
Axis torch measuring system 1 of the invention measures axis 2 to be measured can selectively measure axis 2 to be measured according to actual demand
Position angle, axis to be measured 2 two o'clock between poor, the to be measured axis 2 of position angle torque or revolving speed.
The installation of axis torch measuring system of the invention is explained in detail below, referring back to Fig. 2.First magnetic grid 10 of the invention with
Second magnetic grid 11 is ribbon magnetic grid, has no metal-backed, during installation, axis to be measured can be adhere closely to by binding
2 surfaces, when pasting, banded first magnetic grid 10 surround with the second magnetic grid 11 along the radial direction of axis 2 to be measured to be measured
Axis 2 one weeks, and the first seam 101 and the second seam 111 are respectively formed in interface.In this way, passing through banded first magnetic grid
10 and second magnetic grid 11, axis torch measuring system 1 of the invention can be used to carry out torque measuring to the shaft of different mechanical equipments
Amount, for different size of axis 2 to be measured, it is only necessary to the first magnetic of suitable length is selected according to the circumferential size of axis 2 to be measured
Grid 10 and the second magnetic grid 11, without the annular enclosed type magnetic grid for being specifically designed, customizing corresponding 2 circumferential size of axis to be measured.
Also, the thickness of the first magnetic grid 10 and the second magnetic grid 11 is between 1.0mm~1.5mm, it is thick in present embodiment
Degree is 1.0mm, and the first magnetic grid 10 and the second magnetic grid 11 of low thickness can be easier to be adhered to 2 surface of axis to be measured during installation.
Please refer to fig. 5, its enlarged drawing for the a-quadrant of Fig. 4.As shown, also there is magnetic grid in present embodiment
Protective layer 15, magnetic grid protective layer 15 are set to surface of first magnetic grid 10 far from axis 2 to be measured.In present embodiment, magnetic grid is protected
Sheath 15 is the stainless steel strip with a thickness of 0.2mm, after the first magnetic grid 10 installs, covers magnetic grid protective layer 15 in the first magnetic
10 surface of grid and fixation, to shield to the first magnetic grid 10.Likewise, for the second magnetic grid 11 of protection, in the second magnetic grid 11
After installing, magnetic grid protective layer 15 is also covered in the surface of the second magnetic grid 11 and is fixed.
Then, the first sensory package 12 and the second sensory package 13 are installed, referring to Figure 2 together and Fig. 5.Installation first passes
Feel component 12 two the first detecting parts 120 or the second sensory package 13 two the second detecting parts 130 when, two first sense
The spacing distance in survey portion 120 is greater than the width of the first seam 101, and the spacing distance of two the second detecting parts 130 is greater than second and connects
The width of seam 111, enter simultaneously to avoid the first seam 101 the MR sensor of two the first detecting parts 120 sensing range or
Then the second seam 111 enters the sensing range of the MR sensor of two the second detecting parts 130 simultaneously, avoids influencing the first sense simultaneously
Survey the output of signal and the second sensing signal.
Simultaneously, it is contemplated that axis 2 to be measured will appear unstable bounce due to its precision problem in rotation, especially to
Under the service condition being relatively large in diameter for measuring axis 2, two first senses of the first magnetic grid 10 and the first sensory package 12 may be made
Friction, damage first are generated between survey portion 120 or two the second detecting parts 130 of the second magnetic grid 11 and the second sensory package 13
Magnetic grid 10, the second magnetic grid 11, the first detecting part 120 or the second detecting part 130, to avoid accidental damage, when installation, it is ensured that
Being situated between one detecting part 120 and the first magnetic grid 101 away from the air gap between air gap and the second detecting part 130 and the second magnetic grid 111
Air gap and second between 0.5mm~1.5mm, in present embodiment, between the first detecting part 120 and the first magnetic grid 101
Air gap between detecting part 130 and the second magnetic grid 111 is 1.5mm.Based on this, the pole pitch of the first magnetic grid 10 and the second magnetic grid 11
Also corresponding larger, in present embodiment, the pole pitch of the first magnetic grid 10 and the second magnetic grid 11 is 5mm, i.e. the first detecting part 120
MR sensor and the distance between Hall sensor and the MR sensor and Hall sensor of the second detecting part 130 between
Distance is greater than 5mm.
For make the first sensory package 12 and the second sensory package 13 be easier to reach above-mentioned at a distance from installation requirement, the present invention
Axis torch measuring system 1 further include mounting bracket (not shown), adjusted in the first detecting part 120 or the second detecting part 130
After whole good mounting distance, the first mounting hole 1201 or the second mounting hole 1301 are passed through with screw and then fix the first detecting part 120
Or second detecting part 130 in mounting bracket.First detecting part 120 and the second detecting part 130 are respectively provided with MR sensor, MR sensing
Device is sensed using first magnetic grid 10 of the magnetoresistance to rotation with the second magnetic grid 11, the first magnetic grid 10 of present embodiment with
Second magnetic grid 11 be respectively provided with multipair magnetic pole, the first magnetic grid 10 and the second magnetic grid 11 with axis 2 to be measured it is every rotation one week, first
The quantity of detecting part 120 and the pulse signal of the second detecting part 130 output is the magnetic of the first magnetic grid 10 and the second magnetic grid 11 respectively
Twice of number of pole-pairs, i.e. the first magnetic grid 10 the axis torch measuring system 1 more, of the invention with the pole pair that the second magnetic grid 11 has
Resolution ratio it is higher, it is higher to the measurement accuracy of the torque of axis 2 to be measured, especially use axis torque measurement system of the invention
When the relatively large axis 2 to be measured of 1 pair of axis radius of uniting carries out torque measurement, resolution ratio is relatively higher, and measurement accuracy is relatively more
Greatly.In this way, axis torch measuring system 1 of the invention is using the first magnetic grid 10 with the first seam 101 and has the second seam
111 the second magnetic grid 11, can not only make axis torch measuring system 1 of the invention be suitable for the axis to be measured 2 of different-diameter into
Row torque measurement, but also there is high-resolution and high-precision measurement result.Further, each first detecting part 120 is gone back
With the first connection jaws 1202, each second detecting part 130 also has the second connection jaws 1302, each first detecting part 120
MR sensor is connected to processor 14, each second sensing with signal connecting line by the first connection jaws 1202 with Hall sensor
The MR sensor and Hall sensor in portion 130 are connected to processor 14 with signal connecting line by the second connection jaws 1302, handle
Device 14 constantly receives the first analog signal, the first sensing signal, the second analog signal and the second sensing signal, and carries out corresponding
Judgement, switching receives the first sensing signal or the second sensing signal, and is integrally formed the first transducing signal and senses with second
Signal obtains the big of the torque of the axis to be measured 2 of rotation eventually by the first transducing signal and the processing of the second transducing signal
It is small.
Further, the axis torch measuring system 1 of present embodiment further includes output module 16 and display module 17, place
Device 14 is managed to be electrically connected by output module 16 and display module 17.When processor 14 constantly receives the first sensing signal and
Two sensing signals, and the first transducing signal formed according to the first sensing signal of integration and the second sensing signal and the second sensing are believed
Number and axis to be measured 2 on the distance between two o'clock obtain the torque measurement of axis 2 to be measured as a result, producing in turn according to measurement result
Raw display signal, then will show that signal is sent to display module 17 by output module 16, display module 17 will show that signal turns
Torque capacity is turned to, and then can intuitively show the torque of axis 2 to be measured according to display signal.Meanwhile it can also export to be measured
Position angle difference or the revolving speed between the position angle of axis 2, the two o'clock of axis to be measured 2 are measured, so that axis torque of the invention
Measuring system 1 has the function of a variety of measurements.
In present embodiment, the first sensing signal and the second sensing signal are constantly received using calculator, and by ranging
On the axis to be measured 2 that device measurement obtains in the distance between two o'clock write-in operation program, the axis to be measured 2 of rotation is calculated in real time
Torque, and the torque by showing axis 2 to be measured as computer display.It should be noted that this implementation
Mode is only a kind of embodiment of axis torch measuring system 1 of the invention, should not be as limit.
In conclusion a kind of axis torch measuring system provided by the invention and measurement method, are connect by that will have first
First magnetic grid of seam is installed on the surface of axis to be measured with the second magnetic grid interval with the second seam, makes the first magnetic grid and second
Magnetic grid is rotated with axis to be measured, and is sensed and produced with the first magnetic grid of the first detecting part of the first sensory package to rotation
Raw first sensing signal senses the second magnetic grid of rotation with the second detecting part of the second sensory package and generates the second sensing
Signal, and then second sense of the processor to the output of the first sensing signal and the second sensory package of the output of the first sensory package
It surveys signal to be handled to obtain the torque of axis to be measured, axis torch measuring system installation of the invention is simple, can be applicable in
In carrying out torque measurement, and resolution ratio to the different axis to be measured of shaft diameter, measurement accuracy is high, can be effectively to mechanical equipment
Shaft power is monitored in real time, and then while controlling mechanical equipment normal operation, adjusts its output power, reasonably to mention
High working efficiency, simultaneously, moreover it is possible to make quick diagnosis to the failure to mechanical equipment, improve maintenance efficiency.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that include the process, method of a series of elements, device not only include those elements, but also including
Other elements that are not explicitly listed, or further include for this process, method, article or the intrinsic element of device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
There is also other identical elements in process, method, article or device.
Embodiments of the present invention are described above in conjunction with attached drawing, but the invention is not limited to above-mentioned tools
Body embodiment, the above mentioned embodiment is only schematical, rather than restrictive, the ordinary skill people of this field
Member under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, can also make very
It is multi-form, it belongs within protection of the invention.
Claims (10)
1. a kind of axis torch measuring system characterized by comprising
First magnetic grid has the first seam, and on the surface to be set to axis to be measured；
Second magnetic grid has the second seam, and on the surface to be set to the axis to be measured, and with first magnetic grid
Interval setting；
First sensory package comprising two the first detecting parts, two first detecting part interval settings, and respectively along institute
The radial direction of axis to be measured is stated towards first magnetic grid, two first detecting parts are to sense with described to be measured
First magnetic grid of axis rotation is to generate the first sensing signal；
Second sensory package comprising two the second detecting parts, two second detecting part interval settings, and respectively along institute
The radial direction of axis to be measured is stated towards second magnetic grid, two second detecting parts are to sense with described to be measured
Second magnetic grid of axis rotation is to generate the second sensing signal；
Processor receives first sensing signal and second sensing signal, and to handle the first sensing letter
The torque of the axis to be measured number is obtained with second sensing signal.
2. axis torch measuring system as described in claim 1, which is characterized in that the spacing distance of two first detecting parts
Greater than the width of first seam, the spacing distance of two second detecting parts is greater than the width of second seam.
3. axis torch measuring system as claimed in claim 2, which is characterized in that first magnetic grid and second magnetic grid
Thickness is respectively interposed between 1.0mm~1.5mm, and air gap between first detecting part and first magnetic grid and described
Air gap between second detecting part and second magnetic grid is between 0.5mm~1.5mm.
4. axis torch measuring system as described in claim 1, which is characterized in that each first detecting part and each described
Second detecting part is respectively provided with MR sensor and two Hall sensors, and two Hall sensors are symmetrically disposed on the MR
The two sides of sensor, and the MR sensor of each first detecting part and two Hall sensors along it is described to
Measure the radial direction arrangement of axis and towards first magnetic grid, the MR sensor of each second detecting part and two
The Hall sensor is along the radial direction arrangement of the axis to be measured and towards second magnetic grid；Wherein described first pass
Feel the first analog signal caused by two Hall sensors of the component by each first detecting part alternately to receive
First sensing signal caused by the MR sensor of one of two first detecting parts；Wherein described second pass
Feel the second analog signal caused by two Hall sensors of the component by each second detecting part alternately to receive
Second sensing signal caused by the MR sensor of one of two second detecting parts.
5. axis torch measuring system as claimed in claim 4, which is characterized in that the processor integrates two alternately received
First sensing signal caused by the MR sensor of a first detecting part is the first transducing signal, the processing
Device integrates second sensing signal caused by the MR sensor of two second detecting parts alternately received
Second transducing signal, the processor obtain the axis to be measured according to first transducing signal and second transducing signal
Torque.
6. axis torch measuring system as claimed in claim 5, which is characterized in that in each first detecting part it is described suddenly
Your the distance between sensor and the MR sensor are greater than the pole pitch of first magnetic grid；In each second detecting part
The Hall sensor and the distance between the MR sensor be greater than the pole pitch of second magnetic grid.
7. axis torch measuring system as claimed in claim 6, which is characterized in that it further include display module, the processor root
Measurement result is obtained according to first transducing signal and second transducing signal, and display letter is generated according to the measurement result
Number, and the display module is displayed signal to described in transmission, the display module shows described to be measured according to the display signal
Measure the torque of axis.
8. axis torch measuring system as described in claim 1, which is characterized in that further include magnetic grid protective layer, the magnetic grid is protected
Sheath is set to the surface far from the axis to be measured of first magnetic grid and second magnetic grid.
9. a kind of axis torque measuring method using axis torch measuring system described in claim 1, which is characterized in that including with
Lower step:
Installation first magnetic grid and the second magnetic grid in the surface of axis to be measured, and respectively correspond first magnetic grid with it is described
Second magnetic grid installs first sensory package and second sensory package；
Drive the axis to be measured rotation, first sensory package and second sensory package be respectively induced with it is described to
First magnetic grid and second magnetic grid of axis rotation are measured, and generates first sensing signal and second sense respectively
Survey signal；
The processor handles first sensing signal and second sensing signal, to obtain the torsion of the axis to be measured
Square.
10. axis torque measuring method as claimed in claim 9, which is characterized in that two first detecting parts sense respectively
In the step of first magnetic grid and the first sensing signal of generation for rotating with the axis to be measured, two described first are selected
One of detecting part, the institute that the MR sensor sensing of first detecting part selected is rotated with the axis to be measured
The first magnetic grid is stated, and generates first sensing signal；The Hall sensor of first detecting part selected senses institute
It states the first seam and generates discontinuous first analog signal, switch to the MR sensor of another first detecting part
First magnetic grid that sensing is rotated with the axis to be measured, and generate another first sensing signal；Two of them
Second detecting part senses second magnetic grid with the axis rotation to be measured respectively and generates the second sensing signal
In step, one of two described second detecting parts, the MR sensor sensing of second detecting part selected are selected
With first magnetic grid of the axis rotation to be measured, and generate second sensing signal；Second sense selected
The Hall sensor in survey portion senses second seam and generates discontinuous second analog signal, switches to described in another
Second magnetic grid that the MR sensor sensing of second detecting part is rotated with the axis to be measured, and generate another institute
State the second sensing signal.
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| CN109282927B (en) | 2023-09-01 |
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