CN108362411B - A kind of anticorrosion tonotransducer and preparation method thereof and tension measuring system - Google Patents
A kind of anticorrosion tonotransducer and preparation method thereof and tension measuring system Download PDFInfo
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- CN108362411B CN108362411B CN201810394603.2A CN201810394603A CN108362411B CN 108362411 B CN108362411 B CN 108362411B CN 201810394603 A CN201810394603 A CN 201810394603A CN 108362411 B CN108362411 B CN 108362411B
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention relates to a kind of anticorrosion tonotransducer and preparation method thereof and tension measuring systems, the system includes the closure with accommodation space, it is equipped with diplopore cantilever beam inside the housing, both ends, which are separately connected, stretches out the dismountable measuring rod of shell and fixed link, two groups of foil gauges point are affixed on diplopore cantilever beam two sides, and the diplopore cantilever beam is embedded in amplifying device and seals.Using " active amplification+diplopore cantilever beam+precision resister foil gauge " technology, and design the detachable measuring rod with anti-infiltration falope, the performance of tonotransducer greatly improved, including sensitivity, long-time stability, the linearity, repeatability etc., significantly improve the detection accuracy of bio signal, keep experimental data more accurate and reliable, further increases experiment success rate and experiment teaching effect.
Description
Technical field
The invention belongs to the technical field of tonotransducer, be related to a kind of anticorrosion tonotransducer and preparation method thereof and
Tension measuring system is surveyed more particularly, to a kind of etch-proof diplopore beam type tonotransducer and preparation method thereof and tension
Amount system.
Background technique
Currently, tonotransducer used in the research of China's Basic medicine experiment, generallys use single cantilever beam, single side patch one
2 × 2MM of piece2Semiconductor strain chip technology, as shown in Figure 1, the piece, which is processed into two cross (R1, R4) two, indulges (R2, R3) four grid silks
Form Wheatstone bridge, working principle is as shown in Figure 2: R1, R4 are for measuring, and R2, R3 temperature-compensating are (due to semiconductor material temperature
It is high to spend coefficient, therefore does upper two resistance for temperature-compensating on same silicon wafer) Wheatstone bridge is constituted, potentiometer W is for quiet
It is zero volt that state, which adjusts output voltage,.When external force is in the measurement end stress point of overarm arm, when being allowed to make slight displacement, then R1,
R4 is by tension (resistance increase) or is pressurized (reduction), and resistance R2, R3 are vertical with Impact direction, therefore resistance does not change, this
When electric bridge disequilibrium, that is, have voltage output, and the size of output voltage and the external force size of application are in a linear relationship, this electricity
It presses signal after amplification, oscilloscope display or input record instrument record can be inputted.This is that the technology of typical the nineties is special
Point.
Under technical conditions at that time, sensitivity is the most important technical indicator of energy converter, if sensitivity is not high, nothing
Method acquires more faint bio signal.Bare semiconductor foil gauge and its lead can effectively improve the spirit of tonotransducer
Sensitivity, this is also currently widely used technical solution, is illustrated in figure 3 completely exposed semiconductor gauge.However, this
Scheme is there is also very big defect while improving sensitivity, i.e., foil gauge lacks corresponding safeguard measure, once there is ion
Solution or other corrosive solutions enter, it is easy to corrode foil gauge and its lead, lead to the damage of energy converter, as shown in Figure 4
For the semiconductor gauge of heavy corrosion.In order to meet the etch-proof requirement of tonotransducer used in medical experiment research,
Improve the detection accuracy of bio signal simultaneously, further increase experiment success rate and experimental teaching quality, be the art urgently
Problem to be solved.
In conclusion how to solve used in medical experiment research that tonotransducer is etch-proof asks in the prior art
Topic, and how to guarantee the problem of even improving the detection accuracy of bio signal in etch-proof situation, still lack having for row
The solution of effect.
Summary of the invention
For the deficiencies in the prior art, solve how to solve to open used in medical experiment research in the prior art
The etch-proof problem of power energy converter, and how to guarantee the detection accuracy for even improving bio signal in etch-proof situation
Problem, the present invention provides a kind of anticorrosion tonotransducer and preparation method thereof and tension measuring systems, are provided in particular in
A kind of etch-proof diplopore beam type tonotransducer and preparation method thereof and tension measuring system, using " diplopore cantilever beam+
The design scheme of precision resister foil gauge+active amplifying technique ", and design the detachable measurement with anti-infiltration falope
Bar, can effectively avoid corrosive solution entrance, thoroughly solves the damage of energy converter caused by various solution corrosions in medical experiment and asks
Topic.
The first object of the present invention is to provide a kind of diplopore beam type tonotransducer.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of diplopore beam type tonotransducer, comprising:
Diplopore cantilever beam, both ends are respectively measurement end and fixing end, and two groups of foil gauges point are affixed on diplopore cantilever beam two sides, answer
Become piece and interconnects composition Wheatstone bridge.
The second object of the present invention is to provide a kind of etch-proof diplopore beam type tonotransducer.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of etch-proof diplopore beam type tonotransducer, comprising:
Closure with accommodation space, is equipped with diplopore cantilever beam inside the housing, and both ends are respectively measurement end and consolidate
Fixed end, is separately connected and stretches out the dismountable measuring rod of shell and fixed link, and two groups of foil gauges point are affixed on diplopore cantilever beam two sides, answer
Become piece and interconnect composition Wheatstone bridge, the diplopore cantilever beam is embedded in amplifying device and seals.
Scheme as a further preference, foil gauge described in two groups use between foil metal of the resistance value deviation less than 1 Ω
Resistance strain gage divides the thinnest part for being affixed on diplopore cantilever beam outer wall and diplopore.
Scheme as a further preference, the measuring rod use titanium alloy material, on the measuring rod and described in connection
First through hole is arranged in the opposite one end of diplopore cantilever beam.
Scheme as a further preference, the diplopore cantilever beam measurement end horizontal centre to diplopore setting aperture and measurement
The second equal through-hole of shank diameter, the diplopore cantilever beam fixing end horizontal centre to diplopore setting aperture be measurement shank diameter with
The third through-hole of the sum of twice of maximum allowable deformation, the measuring rod fixing end pass through third through-hole and extend to second by diplopore
In through-hole.
Scheme as a further preference successively installs the dismountable falope of twice on the measuring rod.
Scheme as a further preference is also embedded in the zeroing with amplifying device circuit connection in the diplopore cantilever beam and fills
It sets and seals.
Scheme as a further preference also sets up spirit level above the shell.
The production method that the third object of the present invention is to provide a kind of etch-proof diplopore beam type tonotransducer.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of production method of etch-proof diplopore beam type tonotransducer, comprising:
Step (1): the performance quality of two groups of foil gauges of detection selects foil metal resistance strain gauge；
Step (2): the measurement end of optimization diplopore cantilever beam is debugged according to measuring signal；
Step (3): two groups of foil gauges point are affixed on diplopore cantilever beam two sides；
Step (4): static demarcating and dynamic calibration are carried out；The static demarcating the equal standard test weights of measurement end suspension five into
Row；Can the dynamic calibration in the transient response of the measurement end connection sine adjustable device measurement transducer of 0~50g of power output
Reach 10Hz；
Step (5): in the measuring rod using preceding installation anti-infiltration falope with there are two.
Scheme as a further preference, two groups of foil gauges point are affixed on before diplopore cantilever beam two sides to diplopore cantilever beam
Removing surface is carried out, solidification, installation connecting line is pasted and checks on the quality and lay protective layer.
The fourth object of the present invention is to provide a kind of tension measuring system.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of tension measuring system, including above-mentioned a kind of diplopore beam type tonotransducer or a kind of etch-proof double
Hole beam type tonotransducer is connect by first through hole with measured object, and output end is connect with information processing unit.
Beneficial effects of the present invention:
1, a kind of anticorrosion tonotransducer of the present invention and preparation method thereof and tension measuring system, using " double
The design scheme of hole cantilever beam+precision resister foil gauge+active amplifying technique ", and design with anti-infiltration falope
Detachable measuring rod, effectively avoids corrosive solution from entering, and thoroughly solves transducing caused by various solution corrosions in medical experiment
Device damages problem.
2, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, etch-proof
Meanwhile using advanced precision resister foil gauge, the detection accuracy of tension signal is greatly improved, experiment effect is further increased
And experimental teaching quality.
3, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, use are totally-enclosed
Structure, effectively realization anti-corrosion, temperature and creep such as compensate at the functions automatically, increase substantially tonotransducer reliability and durable
Property.
4, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, the measuring rod
Using titanium alloy material and detachably, have the characteristics that light weight, anticorrosion, cleaning are convenient for disassembly and assembly.
5, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, are filled using amplification
It sets and is embedded in diplopore cantilever beam with balancing controls, promote diplopore cantilever beam+precision resister foil gauge output signal amplitude, realize this
Invention is used interchangeably with tonotransducer in the prior art, guarantees the versatility of anticorrosion tonotransducer of the present invention.
Detailed description of the invention
Fig. 1 is 2 × 2mm in the prior art2Semiconductor gauge pictorial diagram；
Fig. 2 is foil gauge operation principle schematic diagram in the prior art；
Fig. 3 is completely exposed semiconductor gauge schematic diagram in the prior art；
Fig. 4 is the semiconductor gauge schematic diagram of heavy corrosion in the prior art；
Fig. 5 is the structural schematic diagram of tonotransducer of the invention；
Fig. 6 is wheatstone bridge configuration schematic diagram of the invention；
Fig. 7 is the structural schematic diagram of anticorrosion tonotransducer of the invention；
Fig. 8 is 1 isolated frog heart perfusion experiment device schematic diagram of embodiment；
Wherein, 1- fixed link, 2- shell, 3- diplopore cantilever beam, 4- foil gauge, 5- cantilever beam diplopore, 6- amplifying device, 7-
Balancing controls, 8- output signal line, 9- spirit level, 10- fixed screw, 11- falope, 12- measuring rod.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing:
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
For the deficiencies in the prior art, solve how to solve to open used in medical experiment research in the prior art
The etch-proof problem of power energy converter, and how to guarantee the detection accuracy for even improving bio signal in etch-proof situation
Problem, the present invention provides a kind of anticorrosion tonotransducer and preparation method thereof and tension measuring systems, are provided in particular in
A kind of etch-proof diplopore beam type tonotransducer and preparation method thereof and tension measuring system, using " diplopore cantilever beam+
The design scheme of precision resister foil gauge+active amplifying technique " develops a kind of completely new etch-proof tonotransducer, can
Effectively corrosive solution is avoided to enter, thoroughly solves the problems, such as that energy converter caused by various solution corrosions damages in medical experiment.
Embodiment 1:
The purpose of the present embodiment 1 is to provide a kind of diplopore beam type tonotransducer.
To achieve the goals above, the present invention is using a kind of following technical solution:
As shown in figure 5,
A kind of diplopore beam type tonotransducer, comprising:
Diplopore cantilever beam, both ends are respectively measurement end and fixing end, and two groups of foil gauges point are affixed on diplopore cantilever beam two sides, double
The thinnest part of hole cantilever beam outer wall and diplopore, foil gauge interconnect composition Wheatstone bridge, are illustrated in figure 6 Wheatstone bridge
Schematic illustration makes it stretch together with the strain of measured object, the metal foil inside such foil gauge be just stretched or
Compression.Metal foil its resistance when elongating or shortening can change therewith.Minor change by measuring resistance realizes correspondence indirectly
The measurement of change.
Silica gel is set outside foil gauge.
Embodiment 2:
The purpose of the present embodiment 2 is to provide a kind of anticorrosion tonotransducer.
To achieve the goals above, the present invention is using a kind of following technical solution:
As shown in fig. 7,
A kind of anticorrosion tonotransducer, comprising:
Closure with accommodation space, is equipped with diplopore cantilever beam 3 inside the housing, and both ends are respectively measurement end and consolidate
Fixed end is separately connected and stretches out the dismountable measuring rod 12 of shell and fixed link 1, and two groups of foil gauges 4, which are divided to, is affixed on 3 liang of diplopore cantilever beam
Side, foil gauge 4 interconnect composition Wheatstone bridge, and the diplopore cantilever beam 3 is embedded in amplifying device 6 and seals, described to put
Big device 6 connects output signal line 8.
In the preferred embodiment of embodiment 1 and embodiment 2, resistance value deviation is less than 1 Ω between the use of foil gauge 4 described in two groups
Foil metal resistance strain gauge, point be affixed on the thinnest part of diplopore cantilever beam 3 outer wall and diplopore.
In the preferred embodiment of embodiment 2, the measuring rod 12 uses titanium alloy material, on the measuring rod 12 with connection
First through hole is arranged in the opposite one end of the diplopore cantilever beam.
In the preferred embodiment of embodiment 2, the diplopore cantilever beam measurement end horizontal centre is to diplopore setting aperture and surveys
The second equal through-hole of gauge rod diameter, the diplopore cantilever beam fixing end horizontal centre to diplopore setting aperture is measurement shank diameter
With the third through-hole of the sum of twice of maximum allowable deformation, the measuring rod fixing end passes through third through-hole and extends to the by diplopore
In two through-holes.Twice of maximum allowable deformation about ± 0.5mm, such as: third hole is 3.5mm when measuring rod is 2.5mm.Such as Fig. 7 institute
Showing, the aperture ratio of third through-hole measures the big 2d of shank diameter, when measuring rod radial force is equal to 2 times of energy converter measurement upper limit values,
The deformation of measuring rod and diplopore cantilever beam rigid body is just equal to d, and (i.e. measuring rod just contacts diplopore cantilever beam rigid body fixing end
Hole wall).When measuring rod radial force is greater than 2 times of energy converter measurement upper limits, since measuring rod touches diplopore cantilever beam rigid body
The hole wall of fixing end does not continue to act on diplopore cantilever beam rigid body measurement end, plays the role of omnibearing protection to energy converter.
In the preferred embodiment of embodiment 2, twice dismountable falope 11 is successively installed on the measuring rod 12.With
It avoids the generation of ringer solution immersional wetting, prevent the generation of " climbing alkali " phenomenon.
In the preferred embodiment of embodiment 2, measuring rod inner end mantle fiber, diplopore cantilever beam rigid body measurement end tapping passes through spiral shell
Silk connection, measuring rod easy disassembly, cleaning.
The tune with 6 circuit connection of amplifying device is also embedded in the preferred embodiment of embodiment 2, in the diplopore cantilever beam 3
Zero device 7 simultaneously seals.
In the preferred embodiment of embodiment 2, the shell includes shell 2, and 2 one end of shell setting can pass through measuring rod
Cover board, shape can be arranged by the fifth hole of fixed link 1, the shell 2 in 12 fourth hole, 2 other end of the shell setting
At the openable and closable structure with accommodation space, the shell 2 is enclosed construction when being in merging phase.Shell 2 passes through fixation
Screw 10 is fixedly connected with diplopore cantilever beam 3.
In the preferred embodiment of embodiment 2, spirit level 9 is also set up on the shell.
In the present embodiment, it is described in detail by taking the tonotransducer that " isolated frog heart perfusion experiment " uses as an example.
" isolated frog heart perfusion experiment " is the Classic Experiments for studying cardiac function, is that physiology, pharmacology and pathology are raw
The routine experiment opened up in the important content of experimental teaching of science and numerous universities, the experiment for students physics and chemistry because
Influence of the element to cardiac function is of great significance.But occur some problems, isolated frog heart in long-term teaching practice
The spoilage of tonotransducer is obviously higher in perfusion experiment.The sensitivity of tonotransducer declines suddenly, is defeated in experimentation
Signal drift frequently occurs the phenomenon that even no signal exports out, seriously affects experimental teaching quality, also results in teaching fund
Very big waste.Pass through the composed structure and working principle observed student experimenting, study tonotransducer, discovery experiment intermediate ion
The design defect of water clock, corrosion and the tonotransducer of perfusion solution itself is to lead to the obvious higher main original of its spoilage
Cause.The common tonotransducer of medical experiment at present is all made of the mode of exposed " semiconductor gauge " and its lead, to improve
The acquisition to faint bio signal is realized in the sensitivity of its signal acquisition.This design method while improving sensitivity,
There is also great defect, completely exposed foil gauge is easily corroded by solion, and the damage of tonotransducer is caused to be failed.
As shown in figure 8, isolated frog heart perfusion experiment needs after preparing isolated frog heart, completing heart catherization through the frog heart
Folder and silk thread connect tonotransducer, and heart tension variation caused by contracting activity of relaxing is passed to tonotransducer.At this time
Above, lower section vertically connects tonotransducer by silk thread for isolated frog heart and its intubation, this be in Function Experiments teaching from
The standard connection mode of body frog heart perfusion experiment.
According to requirement of experiment, need " ringer solution to be added dropwise at any time in heart surface, is allowed to remain wet in experimentation
State ", this has resulted in the water clock of perfusate.Additionally due to heart catherization technology is complicated fine, student is difficult to grasp skill immediately
Art main points, frequent fault operation such as vascular ligation is not tight or forgets that the vena cave, the frog heart clip that ligature the heart back side clip broken the heart
Leakage ventricle etc. is inserted when dirty or even intubation, can aggravate the water clock of ringer solution.The ringer solution of these water clocks can be flowed to along silk thread to be opened
The measurement end of power energy converter.Since ringer solution contains Ca2+, K+, Na+ plasma of higher concentration, the Ren Shi of water clock to measurement end
Liquid can infiltrate the cantilever beam of energy converter, and continue under " capillary phenomenon " effect to cantilever beam eminence " climbing alkali ".When ringer solution arrives
When up to semiconductor gauge, since foil gauge and its lead are completely exposed without any safeguard procedures, ringer solution has good in addition
Good electric conductivity will cause energy converter output voltage shakiness, sensitivity decline, until corrosion and damage semiconductor gauge, leads
Transducer fails are caused, experimental teaching quality is seriously affected.
For this problem, the present embodiment is by the experimental method of the structural principle of tonotransducer and " isolated frog heart perfusion "
It combines, with " anticorrosion " for contract access point, using " diplopore beam type resistance strain technology " and " active amplifying technique ", proposes
A kind of completely new etch-proof tonotransducer thoroughly solves tonotransducer caused by medical experiment intermediate ion solution corrosion and damages
It is bad, while the detection accuracy of bio signal is improved, further increase experiment success rate and experimental teaching quality.
A kind of anticorrosion tonotransducer, comprising: the closure with accommodation space, it is outstanding equipped with diplopore inside the housing
Arm beam 3, both ends, which are separately connected, stretches out the dismountable measuring rod 12 of shell and fixed link 1, and two groups of foil gauges 4, which divide, is affixed on diplopore cantilever
3 two sides of beam, the diplopore cantilever beam 3 are embedded in amplifying device 6 and seal, and the amplifying device 6 connects output signal line 8.Institute
Measuring rod 12 is stated using titanium alloy material, effectively meets 12 anticorrosion of measuring rod, high intensity, the design requirement of lightweight.In titanium
Twice falope is installed on alloy measuring rod, infiltrates, prevent the generation of " climbing alkali " phenomenon to avoid ringer solution.Measuring rod and anti-
The dismounting and cleaning that saturated ring can be convenient.In frog heart perfusion experiment, the range of dynamic measurement of tension signal is less than 10g, surveys
Gauge rod 12 ensure that tonotransducer has sufficiently low inertia, i.e. tonotransducer measurement end cantilever beam using titanium alloy material
Weight it is as light as possible (≤10g), there is sufficiently fast response speed.
Two groups of foil gauges 4, which divide, is affixed on 3 two sides of diplopore cantilever beam, and the diplopore beam type resistance with 10Hz responding ability is answered
Become transducing head, diplopore cantilever beam has the mechanical characteristic of anti-bias load, i.e. the dependent variable ε of diplopore cantilever beam elastomer is solely dependent upon
Diplopore cantilever beam elastic body plane and the force component with axis perpendicular are acted on, and it is unrelated with other components.According to this spy
Property, creative uses diplopore cantilever beam Technology design tonotransducer, cleverly solves the problems, such as that tonotransducer is etch-proof.
Its output voltage of diplopore beam type tonotransducer and measurement silk thread are unrelated in the position of cantilever beam, are ensureing energy converter inertia
It is sufficiently small, under the premise of sensitivity is sufficiently high, expensive real estate condition is provided to avoid energy converter that " climbing alkali " phenomenon occurs.
It in the present embodiment, can not only be in list using AD623 low drifting, high-gain instrument amplifier as amplifying device 6
(3~12V) is worked normally under power supply, and single gain setting resistor can be used to carry out gain programming, makes it in power supply, gain
And range etc. alternative existing energy converter, it is adapted to realizing with " biological functional system ", for novel anticorrosion
Tonotransducer is widely used in various medical experiments and creates conditions.
Embodiment 3:
The production method that the purpose of the present embodiment 3 is to provide a kind of etch-proof diplopore beam type tonotransducer.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of production method of etch-proof diplopore beam type tonotransducer, comprising:
Step (1): the performance quality of two groups of foil gauges of detection selects foil metal electricity of four resistance value deviations less than 1 Ω
Hinder foil gauge；In the present embodiment, foil gauge plays perception in force transducer and conducts the significant role of instrument strain.Choosing
With foil BF1K-3AA high precision electro resistive foil gauge (1000 Ω), the foil gauge have precision height, good linearity, it is reproducible,
The features such as temperature drift is small can greatly improve the detection accuracy of bio signal.It is conscientious to carry out to its performance quality before foil gauge patch
It checks, makes four foil gauge resistance value deviations used in same energy converter less than 1 Ω.
Step (2): the measurement end of optimization diplopore cantilever beam is debugged according to measuring signal；In the present embodiment, according to medicine
The universal more faint feature of bio signal, needs to carry out debugging optimization to diplopore cantilever beam measurement end, to improve it in experiment
Transient response.
Step (3): two groups of foil gauges point are affixed on diplopore cantilever beam two sides；Two groups of foil gauges point are affixed on diplopore cantilever
Is carried out by removing surface, paste solidification, installation connecting line and checks on the quality and lay protective layer for diplopore cantilever beam before beam two sides.?
In the present embodiment, when patch, it should be noted that select suitable adhesive and follow strictly barbola work, carry out removing surface, paste
The work such as protective layer are checked on the quality and laid to solidification, installation connecting line simultaneously, additionally to pay special attention to as the reserved sky enough of anti-corrosion
Between.
Step (4): static demarcating and dynamic calibration are carried out；The static demarcating the equal standard test weights of measurement end suspension five into
Row；Can the dynamic calibration in the transient response of the measurement end connection sine adjustable device measurement transducer of 0~50g of power output
Reach 10Hz.In the present embodiment, static demarcating and dynamic calibration are combined, suspension five waits standard test weights to carry out static mark
Calmly, it needs to design sine 0~50g of power output adjustable device when dynamic calibration, with the output of storage oscillograph record energy converter
Can the offset between voltage and known quantity, the transient response of measurement transducer reach the technical requirements of 10Hz.
Step (5): in the measuring rod using preceding installation anti-infiltration falope with there are two.
Embodiment 4:
The purpose of the present embodiment 4 is to provide a kind of tension measuring system.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of tension measuring system, including the etch-proof diplopore beam type of one of above-described embodiment 1 or embodiment 2
Tonotransducer is connect by first through hole with measured object, and output end is connect with information processing unit.
Beneficial effects of the present invention:
1, a kind of anticorrosion tonotransducer of the present invention and preparation method thereof and tension measuring system are high-performance
The original exploitation of tonotransducer, using the design side of " diplopore cantilever beam+precision resister foil gauge+active amplifying technique "
Case, and the detachable measuring rod with anti-infiltration falope is designed, effectively avoid corrosive solution from entering tonotransducer, greatly
Width improves the performance, including sensitivity, long-time stability, the linearity, repeatability etc. of tonotransducer, significantly improves bio signal
Detection accuracy, keep experimental data more accurate and reliable, further increase experiment success rate and experiment teaching effect.
2, a kind of anticorrosion tonotransducer of the present invention and preparation method thereof and tension measuring system, with " biology
Functional Experiment system " combine after, can overall application in Function Experiments teaching in, be particularly suitable for " isolated frog heart perfusion " etc. from
The experiment of body organ, effectively avoids corrosive solution from entering, and thoroughly solves energy converter caused by various solution corrosions in medical experiment
Damage problem.Suitable for six professions (clinical medicine, oral cavity, prevention, pharmacy, nursing, bioengineering), three level (5 years
System, eight-year system, foreign student) Medical Function Experiments teaching, in the annual each university for being equipped with biomedical profession at least
More than 1000 students are benefited.
3, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, etch-proof
Meanwhile using advanced precision resister foil gauge, the detection accuracy of tension signal is greatly improved, experiment effect is further increased
And experimental teaching quality.
4, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, use are totally-enclosed
Structure, effectively realization anti-corrosion, temperature and creep such as compensate at the functions automatically, increase substantially tonotransducer reliability and durable
Property.
5, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, the measuring rod
Using titanium alloy material and detachably, have the characteristics that big light weight, intensity, anticorrosion, cleaning are convenient for disassembly and assembly.
6, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, are filled using amplification
It sets and is embedded in diplopore cantilever beam with balancing controls, promote diplopore cantilever beam+precision resister foil gauge output signal amplitude, realize this
Invention is used interchangeably with tonotransducer in the prior art, guarantees the versatility of anticorrosion tonotransducer of the present invention.
7, described a kind of anticorrosion tonotransducer of invention and preparation method thereof and tension measuring system, there is design to close
The features such as reason, performance be stable, cheap, economy and durability.It can be widely applied to need to hang isolated preparation, guidance and detection
The isolated experiment of force signal is studied, be particularly suitable for the physiology of all types scientific research institutions and medical college, Pathological Physiology,
The experimental teaching and scientific research of pharmacology and biology can thoroughly solve the damage of tonotransducer caused by various solution corrosions
It is bad, conventional efficient and experiment success rate are greatly improved, is worth with extensive and important teaching and scientific research, it can be towards isolated experiment
Relevant teaching and scientific research work is popularized in an all-round way, its social and economic benefit is further increased.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.Therefore, the present invention is not intended to be limited to this
These embodiments shown in text, and it is to fit to the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. a kind of etch-proof diplopore beam type tonotransducer characterized by comprising
Closure with accommodation space is equipped with diplopore cantilever beam inside the housing, and both ends are respectively measurement end and fixing end,
It is separately connected and stretches out the dismountable measuring rod of shell and fixed link, two groups of foil gauges point are affixed on diplopore cantilever beam two sides, foil gauge
Composition Wheatstone bridge is interconnected, the diplopore cantilever beam is embedded in amplifying device and seals；
The measuring rod uses titanium alloy material；
Twice dismountable falope is successively installed on the measuring rod；
The diplopore cantilever beam measurement end horizontal centre second through-hole equal with shank diameter is measured to diplopore setting aperture, it is described
Diplopore cantilever beam fixing end horizontal centre is to that diplopore setting aperture be measurement shank diameter and the sum of twice of maximum allowable deformation
Three through-holes；
The measuring rod fixing end passes through third through-hole and is extended in the second through-hole by diplopore.
2. tonotransducer according to claim 1, which is characterized in that on the measuring rod with connect the diplopore cantilever
First through hole is arranged in the opposite one end of beam.
3. tonotransducer according to claim 1, which is characterized in that also insertion is filled with amplification in the diplopore cantilever beam
Circuits connection balancing controls and sealing, be suitable for isolated tissue experiment.
4. tonotransducer according to claim 1, which is characterized in that also set up spirit level on the shell.
5. a kind of production method of etch-proof diplopore beam type tonotransducer as described in claim 1, feature exist
In, comprising:
Step (1): the performance quality of two groups of foil gauges of detection selects foil metallic resistance of four resistance value deviations less than 1 Ω to answer
Become piece；
Step (2): the measurement end of optimization diplopore cantilever beam is debugged according to measuring signal；
Step (3): two groups of foil gauges point are affixed on diplopore cantilever beam two sides, and reserved anti-corrosion space；
Step (4): static demarcating and dynamic calibration are carried out；The static demarcating waits standard test weights to carry out in measurement end suspension five；
The dynamic calibration connects the sine adjustable device of 0~50g of power output in measurement end, and can the transient response of measurement transducer
Reach 10Hz.
6. a kind of tension measuring system, including tonotransducer according to any one of claims 1-4, by first through hole with
Measured object connection, output end are connect with information processing unit.
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| CN201810394603.2A CN108362411B (en) | 2018-04-27 | 2018-04-27 | A kind of anticorrosion tonotransducer and preparation method thereof and tension measuring system |
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| CN114593848B (en) * | 2022-03-16 | 2023-06-16 | 南开大学 | Wide-range high-sensitivity resistance strain measurement system |
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| CN1075006A (en) * | 1991-12-27 | 1993-08-04 | 株式会社石田衡器制作所 | Dynamometry is taken into account the weighing device that uses this dynamometer |
| US6324918B1 (en) * | 2000-06-05 | 2001-12-04 | Center For Tribology, Inc. | Bidirectional force sensor |
| CN2828774Y (en) * | 2005-06-17 | 2006-10-18 | 南京航空航天大学 | Two-dimensional force/force moment sensor |
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| CN104903691A (en) * | 2012-11-12 | 2015-09-09 | 株式会社爱安德 | Roberval-type load cell |
| CN205120283U (en) * | 2015-10-15 | 2016-03-30 | 象山康丽针织厂 | Tension appearance sensor |
| CN205538063U (en) * | 2016-02-02 | 2016-08-31 | 浙江日发纺织机械股份有限公司 | Novel tension sensor |
| CN208076068U (en) * | 2018-04-27 | 2018-11-09 | 山东大学 | A kind of anticorrosion tonotransducer and tension measuring system |
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2018
- 2018-04-27 CN CN201810394603.2A patent/CN108362411B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075006A (en) * | 1991-12-27 | 1993-08-04 | 株式会社石田衡器制作所 | Dynamometry is taken into account the weighing device that uses this dynamometer |
| US6324918B1 (en) * | 2000-06-05 | 2001-12-04 | Center For Tribology, Inc. | Bidirectional force sensor |
| CN2828774Y (en) * | 2005-06-17 | 2006-10-18 | 南京航空航天大学 | Two-dimensional force/force moment sensor |
| CN202281665U (en) * | 2011-10-29 | 2012-06-20 | 北京理工大学 | Cantilever beam type two-dimensional force transducer |
| CN104903691A (en) * | 2012-11-12 | 2015-09-09 | 株式会社爱安德 | Roberval-type load cell |
| CN205120283U (en) * | 2015-10-15 | 2016-03-30 | 象山康丽针织厂 | Tension appearance sensor |
| CN205538063U (en) * | 2016-02-02 | 2016-08-31 | 浙江日发纺织机械股份有限公司 | Novel tension sensor |
| CN208076068U (en) * | 2018-04-27 | 2018-11-09 | 山东大学 | A kind of anticorrosion tonotransducer and tension measuring system |
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