CN106969859A - The measuring method and device of arthropod foot of a chela strength - Google Patents
The measuring method and device of arthropod foot of a chela strength Download PDFInfo
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- CN106969859A CN106969859A CN201710313001.5A CN201710313001A CN106969859A CN 106969859 A CN106969859 A CN 106969859A CN 201710313001 A CN201710313001 A CN 201710313001A CN 106969859 A CN106969859 A CN 106969859A
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- Prior art keywords
- resistance
- chela
- foot
- arthropod
- dynamometry
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- 241000040710 Chela Species 0.000 title claims abstract description 67
- 241000238421 Arthropoda Species 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 65
- 238000007906 compression Methods 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 44
- 238000012986 modification Methods 0.000 claims abstract description 14
- 230000004048 modification Effects 0.000 claims abstract description 14
- 230000005483 Hooke's law Effects 0.000 claims abstract description 7
- 241000186216 Corynebacterium Species 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims 1
- 241001465754 Metazoa Species 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000003086 colorant Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241001167839 Hymenochaete corrugata Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
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
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The measuring method and device of arthropod foot of a chela strength, device include shell and dynamometry rod.Dynamometry rod includes the fixed part being fixedly linked with shell and the movable part being connected by compression spring with fixed part, and movable part is connected by connecting rod with internal circuit；The clamped portion outboard of dynamometry rod is provided with rubber crust.During measurement, the compression spring forced compression of dynamometry rod, movable part is moved to fixed part, so as to drive connecting rod to change slide resistor resistance, the deformation quantity of compression spring is obtained by the knots modification of resistance, the size of the arthropod foot of a chela strength is obtained according to Hooke's law.The dynamometer of the application is applied to arthropod foot of a chela force measurement, it is related to principle simple, dynamometer of different shapes can be designed according to animal feature, the accurate measurement of foot of a chela strength can be better met, and measuring method is simple, it is easy to carry, it is suitable for laboratory and the measurement of field scientific experiment, more accurately force data is provided for scientific experiment.
Description
Technical field
The present invention relates to a kind of method and its used foot of a chela force measurement device for measuring arthropod foot of a chela strength,
Belong to arthropod force measurement field.
Background technology
The step of arthropod is deformed into pincers, and spy claims the foot of a chela, for taking food or resisting the enemy.Arthropod foot of a chela strength size is
One of its important biological property, can also be used as the index for judging economical arthropod quality.To meet scientific research
Need, be better understood by arthropod foot of a chela strength it is ingested, resist the enemy etc. behavior influence, it is necessary to by a kind of special section
Main drive thing foot of a chela force measurement meter measures its foot of a chela strength, the need for meeting scientific research.
Need that the strength of the crab foot of a chela, but existing strength must be measured sometimes according to scientific research in arthropod force measurement field
Meter is generally the gripe dynamometer that the mankind use, and is not suitable for the measurement applied to arthropod foot of a chela strength.Ground to meet science
The need for studying carefully, it is necessary to design a kind of meter specifically designed for arthropod foot of a chela strength.
The content of the invention
It is an object of the present invention to provide a kind of measuring method of arthropod foot of a chela strength and device, to overcome existing measurement to set
The deficiency of standby and technology.
A kind of measuring method of arthropod foot of a chela strength, it is characterised in that comprise the following steps：By two clamping plates each other
Relative one side is connected by compression spring, and one end of one of clamping plate is fixedly connected with swept resistance, another piece of clamping plate
The sliding block connection of one end and slide resistor；The foot of a chela of arthropod is made to clamp two clamping plates, to change the resistance of swept resistance
Value, by detection resistance value to obtain the knots modification of resistance, the displacement that resistance sliding block is obtained by the knots modification of resistance is institute
The deformation quantity of compression spring is stated, the size of the arthropod foot of a chela strength is obtained finally according to Hooke's law.
Described swept resistance is connected with ammeter and is connected to power supply；It is logical during with ammeter measurement foot of a chela clamping two clamping plates
The electric current of swept resistance is crossed, and according to the knots modification of the Current calculation resistance measured.
Described swept resistance is in parallel with voltmeter and is connected to power supply；Slided during with voltmeter measurement foot of a chela clamping two clamping plates
The voltage of dynamic resistance, and according to the knots modification of the voltage calculating resistance measured.
A kind of arthropod foot of a chela force measurement device, it is characterised in that the device includes shell and on shell
Dynamometry rod, dynamometry rod includes the strap and the removable folder above strap being fixedly linked with the shell
Plate, removable clamping plate is connected by compression spring with strap；Swept resistance R is provided with the shell2, fixed value resistance R1, band
There are single-chip microcomputer, LED digital displays, switch and the power supply of A/D converter, one end of removable clamping plate towards the shell is set
There is connecting rod, the connecting rod and swept resistance R2On sliding block be connected；
Fixed value resistance R1And swept resistance series connection, and having a voltage measurement point therebetween, the measurement point is connected with single-chip microcomputer, and
Pass through the point voltage of the single chip computer measurement measurement point；During measurement, the compression spring forced compression of dynamometry rod, dynamometry rod it is removable
Clamping plate is moved to strap, so as to drive connecting rod to change swept resistance R2Resistance size, and then change the point electricity of measurement point
Size is pressed, a voltage signal is simultaneously converted into data signal, magnitude of voltage is converted into by the voltage signal of single-chip microcomputer collection measurement point
Spring force simultaneously shows that the power supply is powered for whole device, and the power supply is controlled by switch on LED digital displays
System.
A kind of arthropod foot of a chela force measurement device, it is characterised in that the device includes shell and on shell
Dynamometry rod, dynamometry rod includes the strap and the removable clamping plate above fixed part being fixedly linked with the shell,
Removable clamping plate is connected by compression spring with strap；Swept resistance R is provided with the shell2, ammeter, switch and
Power supply, the removable clamping plate is provided with connecting rod, the connecting rod and swept resistance R towards one end of shell2On sliding block be connected.
When the dynamometry rod is not clamped, the swept resistance R is made2Resistance be maximum, and with now ammeter
Pointer position be 0 scale；When the compression spring in the dynamometry rod is fully compressed, the swept resistance R2Resistance be
Minimum value, using the pointer position of now ammeter as maximum, force angle value, is divided with this to ammeter dial.
Above-mentioned arthropod foot of a chela force measurement device also includes single-chip microcomputer and LED digital displays, described single-chip microcomputer
The current value that the ammeter is measured is received, corresponding spring force is calculated, and shown by LED digital displays.
Two ends are that the width of part between spherical shape, two ends is less than the diameter of two ends ball, institute inside and outside the dynamometry rod
State between two balls of the removable clamping plate in the middle part of the dynamometry rod, and mutually pasted with the center section part split-phase of strap below
Closely form corynebacterium structure；The ball at two ends is smooth, so that no matter the foot of a chela grips where and can it is slided to movable part
Accurately measured；Waterproof membrane is covered between the edge and strap of removable clamping plate, to ensure that dynamometer internal circuit is done
It is dry；The ellipsoidal cross section of above-mentioned corynebacterium structure, to imitate shell arc-shaped, can preferably adapt to the foot of a chela of arthropod
Shape.
The holding portion of described dynamometry rod is provided with detachable rubber crust, and rubber crust carries fine recesses, face
Color is black.
Described single-chip microcomputer uses AC8051F410 single-chip microcomputers, 8 central processing units, Flash program built in the single-chip microcomputer
Memory, 12 SAR analog/digital converters, precision is high, data parallel output, and speed meets testing requirement；And by compiler
Keil programs implantation ucos-II on single-chip microcomputer, to realize strength size in record measurement process.
During measurement, compression spring drives connecting rod to change slide rheostat R2Resistance size, thus compression spring deformation quantity x
With slide rheostat R2Deformation quantity it is identical, slide rheostat R2Change in resistance be directly proportional to its sliding distance, i.e. R3/R2=
（L-x）/ L（The length of slide rheostat, R when L is unmeasured2For slide rheostat maximum value, R3For slide rheostat R2It is sliding
Resistance when dynamic distance is x）, therefore by measuring R3Compression spring deformation quantity x can be further calculated, by Hooke's law F=kx
（K is compression spring stiffness factor）Foot of a chela power can be drawn；
The single-chip microcomputer receives swept resistance R2With fixed value resistance R1Between measurement point voltage signal U=R3/（R1+R3）× reference
Voltage（Reference voltage is fixed value）, voltage signal U is gathered by A/D converter and voltage signal is converted into digital letter
Number, the binary digital signal of 4096 × U/ reference voltages is exported, single-chip microcomputer is according to formula U=R3/（R1+R3）× reference voltage
Slide rheostat R when calculating dynamometry3Resistance size.
Described LED digital displays are made up of multiple 8 segmentation LED digital display tubes；The pin and single-chip microcomputer of display tube
Output port connects, by being programmed the high/low level of control single chip computer output to single-chip microcomputer and then controlling this multiple 8 segmentation
The combination for turning on/off generation of LED digital display tubes shows various numerals.
To enable, LED digital displays and single-chip microcomputer be accurate, stably normal work, and to ensure portable force gauge
Small volume, it is lightweight, the features such as be easy to carry, use+5V dc sources.
Invention advantage
It is simple and reliable the present invention relates to principle, different colours and the dynamometer of size can be designed according to animal feature, can be preferably
Phagostimulant etc. can be filled by meeting in the accurate measurement of foot of a chela strength, the fine recesses of rubber crust, lure tested animal actively to press from both sides
Dynamometry rod movable part is taken, while soft rubber can protect the foot of a chela and dynamometer of animal injury-free in measurement.Dynamometry
Rod fixed part upper and lower side ball is smooth, and no matter the foot of a chela, which grips where, can make it slide to moveable part accurately to be measured.Rubber
The design for disassembly of glue crust makes same dynamometer only to change the i.e. measurable different animal of different ambroin overcoats, soon
Victory is convenient, and rubber waterproof is adapted to operation in water.
Dynamometer small volume, it is lightweight, be easy to carry, and measuring method is simple, is not only suitable in laboratory measurement, more suitable
It is suitable for field scientific experiment measurement, more accurately force data is provided for scientific experiment.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention（Dynamometry rod is cylinder）.
Fig. 2 is Fig. 1 internal circuit design figure.
Fig. 3 is the overall structure diagram of the present invention（Dynamometry rod two ends are spherical）.
Fig. 4 is Fig. 3 internal circuit design figure.
Fig. 5 is the sectional view of dynamometry rod holding portion.
Fig. 6 is circuit diagram of the present invention using ammeter scheme.
Fig. 7 is circuit diagram of the present invention using the scheme of ammeter, single-chip microcomputer and display.
Wherein, Fig. 7 A be single-chip microcomputer and display by the way of built-in, Fig. 7 B are single-chip microcomputer and display using external
Mode.
Fig. 8 is the present invention using ammeter dial plate schematic diagram during ammeter scheme.
Wherein：1st, dynamometry rod, 2, rubber crust, 3, compression spring, 4, connecting rod, 5, swept resistance R2, 6, fixed value resistance
R1, 7, A/D converter, 8, single-chip microcomputer, 9, LED digital displays, 10, on ＆ off switch, 11, power supply, 12, shell, 13, waterproof membrane,
14th, ammeter.
Embodiment
A kind of measuring method of arthropod foot of a chela strength, it is characterised in that comprise the following steps：By two clamping plates each other
Relative one side is connected by compression spring, and one end of one of clamping plate is fixedly connected with swept resistance, another piece of clamping plate
The sliding block connection of one end and slide resistor；The foot of a chela of arthropod is made to clamp two clamping plates, to change the resistance of swept resistance
Value,
Described swept resistance is connected with ammeter and is connected to power supply；Pass through cunning during with ammeter measurement foot of a chela clamping two clamping plates
The electric current of dynamic resistance, and according to the knots modification of the Current calculation resistance measured；
Or described swept resistance is in parallel with voltmeter and is connected to power supply；Slided during with voltmeter measurement foot of a chela clamping two clamping plates
The voltage of dynamic resistance, and according to the knots modification of the voltage calculating resistance measured；
The displacement for obtaining resistance sliding block by the knots modification of resistance is the deformation quantity of the compression spring, fixed finally according to Hooke
Rule obtains the size of the arthropod foot of a chela strength.
Obviously, above-mentioned swept resistance is substituted for displacement transducer, the relative of two clamping plates is monitored by displacement transducer
The deformation quantity of compression spring when displacement, i.e. clamping plate are clamped, and then directly obtain according to Hooke's law the folder of the arthropod foot of a chela
Holding force.
As shown in figs. 1-7, the present invention includes shell 12, dynamometry rod 1, rubber crust 2, compression spring 3, connecting rod 4, slip
Resistance R25th, fixed value resistance R1 6th, A/D converter 7, single-chip microcomputer 8, LED digital displays 9, on ＆ off switch 10, power supply 11, waterproof membrane
13, ammeter 14.
Embodiment 1
Such as Fig. 1-5, a kind of arthropod foot of a chela force measurement device, it is characterised in that the device includes shell 12 and installed outside
Dynamometry rod 1 on shell 12, dynamometry rod 1 includes the strap being fixedly linked with the shell 12 and above strap
Removable clamping plate, removable clamping plate is connected by one or more compression spring 3 with strap；It is provided with the shell 12
Swept resistance R25th, fixed value resistance R16th, the single-chip microcomputer 8 with A/D converter 7, LED digital displays 9, switch 10 and power supply
11, the removable clamping plate is provided with connecting rod 4, the connecting rod 4 and swept resistance R towards one end of shell2Sliding block phase on 5
Even；
Fixed value resistance R16 and swept resistance 5 connect, and have a voltage measurement point, the measurement point and the phase of single-chip microcomputer 8 therebetween
Even, and by single-chip microcomputer 8 the point voltage of the measurement point is measured；During measurement, the forced compression of compression spring 3 of dynamometry rod 1, dynamometry rod
1 removable clamping plate is moved to strap, so as to drive connecting rod 4 to change swept resistance R25 resistance sizes, and then change survey
The point voltage swing of point is measured, a voltage signal is simultaneously converted into data signal by the voltage signal of the collection measurement point of single-chip microcomputer 8, by electricity
Pressure value is converted into spring force and shown on LED digital displays 9, and the power supply 11 is powered for whole device, and the power supply
11 are controlled by switch 10.
Such as Fig. 1,2, the dynamometry rod 1 is in the form of a column structure, and the program is simple in construction, it is easy to make, whole dynamometry rod 1
It is used for clamping.
Two ends are the width of part between spherical shape, two ends less than two ends ball inside and outside such as Fig. 3,4, the dynamometry rod 1
Diameter, the removable clamping plate is located between two balls at the middle part of dynamometry rod 1, and with the stage casing of strap below
Part is mutually pressed close to and forms corynebacterium structure；The ball at two ends is smooth, so that no matter the foot of a chela grips where and can slide it
Accurately measured to movable part；Gap covering waterproof membrane 13 between the edge and strap of removable clamping plate, to protect
Dynamometer internal circuit is demonstrate,proved to dry；The ellipsoidal cross section of above-mentioned corynebacterium structure, can be more preferable to imitate shell arc-shaped
Adapt to the foot of a chela shape of arthropod.
Described removable clamping plate is provided with detachable rubber crust 2, and strap is located at the portion between two spheroids
Divide and also be provided with detachable rubber crust 2, rubber crust 2 carries fine recesses, and color is black.
Described single-chip microcomputer 8 uses AC8051F410 single-chip microcomputers, 8 central processing units, Flash program built in the single-chip microcomputer
Memory, 12 SAR analog/digital converters, precision is high, data parallel output, and speed meets testing requirement；And by compiler
Keil programs implantation ucos-II on single-chip microcomputer 8, to realize strength size in record measurement process.
During measurement, compression spring 3 drives connecting rod 4 to change slide rheostat R25 resistance sizes, thus the shape of compression spring 3
Variable x and slide rheostat R25 deformation quantity is identical, slide rheostat R25 change in resistance is directly proportional to its sliding distance, i.e.,
R3/R2=（L-x）/ L（The length of slide rheostat, R when L is unmeasured2For slide rheostat maximum value, R3To slide variable resistance
Device R2Resistance when sliding distance is x）, therefore by measuring R3The deformation quantity x of compression spring 3 can be further calculated, is determined by Hooke
Restrain F=kx（K is compression spring stiffness factor）Foot of a chela power can be drawn；
The single-chip microcomputer 8 receives swept resistance R25 and fixed value resistance R1Voltage signal U=R of 6 measurement points3/（R1+R3）× ginseng
Examine voltage（Reference voltage is fixed value）, voltage signal U is gathered by A/D converter 7 and voltage signal is converted into numeral
Signal, exports the binary digital signal of 4096 × U/ reference voltages, single-chip microcomputer 8）According to formula U=R3/（R1+R3）× reference
Slide rheostat R when voltage calculates dynamometry3Resistance size.
Described LED digital displays 9 are made up of 8 segmentation LED digital display tubes；The pin of display tube is exported with single-chip microcomputer
Port connects, by being programmed the high/low level of control single chip computer output to single-chip microcomputer 8 and then controlling this eight sections of light emitting diodes
The combination for turning on/off generation show various numerals.
To enable, LED digital displays 9 and single-chip microcomputer 8 be accurate, stably normal work, and to ensure Portable force measuring
The small volume of meter, it is lightweight, the features such as be easy to carry, use+5V dc sources 11.
In use, phagostimulant etc. will be filled in the fine recesses of the rubber crust of dynamometry rod first, tested animal master is lured
Dynamic gripping dynamometry rod, while soft rubber can protect the foot of a chela and dynamometer of animal injury-free in measurement.
Rubber crust is design for disassembly.The rubber crust of different colours, experiment card can be selected according to different animals
Dynamometry rod is that black is easier to make animal play maximum, force during bright measurement crab foot of a chela strength.
Same dynamometer need to only change the i.e. measurable different animal of ambroin overcoat of different colours, efficient and convenient,
And rubber waterproof is adapted to operation in water.
Secondly, foot of a chela gripping dynamometry rod, compression spring forced compression, the movable part of dynamometry rod is moved to fixed part, from
And drive connecting rod to change swept resistance R2Resistance size, and then change circuit voltage size；Swept resistance R2With fixed value resistance R1
Between have voltage measurement point, the measurement point is connected with single-chip microcomputer, and single-chip microcomputer receives voltage U=R3/(R1+R3) × reference voltage
（R3Slide rheostat R during for dynamometry2Instantaneous resistance）, and by analog/digital converter collection voltages signal U and by voltage
Signal is converted to data signal, exports the binary digital signal of 4096 × U/ reference voltages；Pass through single-chip microcomputer internal processor
The data signal of analog/digital converter is received according to formula U=R3/(R1+R3) × reference voltage is slided when calculating dynamometry to be become
Hinder device R3Resistance size；Because of compression spring deformation quantity x and slide rheostat R2Deformation quantity it is identical, slide rheostat R2Resistance
Change is directly proportional to its sliding distance, i.e. R3/R2=(L-x)/L（The total length of slide rheostat, R when L is unmeasured2、R3, L be
Known quantity）, single-chip microcomputer further calculates compression spring deformation quantity x；By Hooke's law F=kx (k be compression spring stiffness factor,
Known quantity) data of institute's dynamometry can be drawn.
The pin of each light emitting diode connects with the output port of single-chip microcomputer in LED digital displays, by monolithic
Machine programming Control single-chip microcomputer exports high/low level and realizes turning on/off for each diode, and then realizes that LED digital displays are shown
Force data in measurement process.Power supply is powered for whole device, and the power supply has switch to be controlled.
Embodiment 2
The embodiment appearance design is same as Example 1（Such as Fig. 1,3）, it is characterised in that measured using ammeter, including
Shell 12 and the dynamometry rod 1 on shell 12, dynamometry rod 1 include the strap that is fixedly linked with the shell 12 and
Removable clamping plate above fixed part, removable clamping plate is connected by compression spring 3 with strap；In the shell 12
Provided with swept resistance R25th, ammeter 14, switch 10 and power supply 11, the removable clamping plate is towards one end of shell provided with company
Extension bar 4, the connecting rod 4 and swept resistance R2Sliding block on 5 is connected.
During measurement, the forced compression of compression spring 3 of dynamometry rod 1, the movable part of dynamometry rod 1 is moved to fixed part, so that
Connecting rod 4 is driven to change swept resistance R25 resistance sizes, and then change size of current, and spring knots modification and electric current knots modification
Proportional, elastic force i.e. foot of a chela power can be drawn by the registration of ammeter 14.
Embodiment 3
On the basis of embodiment 2, following design is carried out：
Its circuit diagram such as Fig. 6, when the dynamometry rod 1 is not clamped, makes the swept resistance R25 resistance is maximum, and
Using the pointer position of now ammeter 14 as 0 scale；When the compression spring 3 in the dynamometry rod 1 is fully compressed, the cunning
Dynamic resistance R25 resistance is minimum value, using the pointer position of now ammeter 14 as maximum, force angle value, and dial is carried out with this
Divide.The size of foot of a chela strength can be directly read by the position of ammeter pointer.Its ammeter dial plate as shown in figure 8,
It has two semicircle scales, and inner side is represents the scale of electric current, and outside is the scale for representing power.
Principle can be reequiped to the ammeter dial plate accordingly, and the strength size measured during according to different electric currents is in ammeter
Corresponding power F is marked out above electric current registration, you can obtain the simple dynamometer of a measurement arthropod foot of a chela strength.
Embodiment 4
On the basis of embodiment 2, following design is carried out：
Its circuit diagram such as Fig. 7, above-mentioned arthropod foot of a chela force measurement device also includes single-chip microcomputer 8 and LED digital displays 9,
Described single-chip microcomputer 8 receives the current value that the ammeter 14 is measured, and calculates corresponding spring force, and pass through LED numerals
Display 9 is shown.9 points of single-chip microcomputer 8 and LED digital displays be built-in and two kinds of circumscribed.Can be straight by display
Connect the digitized foot of a chela strength size of reading.
Claims (11)
1. a kind of measuring method of arthropod foot of a chela strength, it is characterised in that comprise the following steps：By two clamping plates phase each other
To one side connected by compression spring, one end of one of clamping plate is fixedly connected with swept resistance, the one of another piece of clamping plate
End is connected with the sliding block of slide resistor；The foot of a chela of arthropod is made to clamp two clamping plates, to change the resistance value of swept resistance,
By detection resistance value to obtain the knots modification of resistance, the displacement that resistance sliding block is obtained by the knots modification of resistance is the pressure
The deformation quantity of power spring, the size of the arthropod foot of a chela strength is obtained finally according to Hooke's law.
2. the measuring method of arthropod foot of a chela strength as claimed in claim 1, it is characterised in that described swept resistance with
Ammeter is connected and is connected to power supply；With electric current during ammeter measurement foot of a chela clamping two clamping plates by swept resistance, and according to
The knots modification of the Current calculation resistance measured.
3. the measuring method of arthropod foot of a chela strength as claimed in claim 1, it is characterised in that described swept resistance with
Voltmeter is in parallel and is connected to power supply；The voltage of swept resistance when measuring foot of a chela clamping two clamping plates with voltmeter, and according to measuring
Voltage calculate resistance knots modification.
4. a kind of arthropod foot of a chela force measurement device, it is characterised in that the device includes shell（12）With installed in shell
（12）On dynamometry rod（1）, dynamometry rod（1）Including with the shell（12）The strap that is fixedly linked and positioned at geometrical clamp
Removable clamping plate above plate, removable clamping plate passes through compression spring（3）It is connected with strap；The shell（12）Inside it is provided with
Swept resistance R2（5）, fixed value resistance R1（6）, with A/D converter（7）Single-chip microcomputer（8）, LED digital displays（9）, switch
（10）And power supply（11）, the removable clamping plate is towards one end of shell provided with connecting rod（4）, the connecting rod（4）With slip
Resistance R2（5）On sliding block be connected；
Fixed value resistance R1（6）And swept resistance（5）Series connection, and have a voltage measurement point, the measurement point and single-chip microcomputer therebetween
（8）It is connected, and passes through single-chip microcomputer（8）Measure the point voltage of the measurement point；During measurement, dynamometry rod（1）Compression spring（3）Stress
Compression, dynamometry rod（1）Removable clamping plate moved to strap, so as to drive connecting rod（4）Change swept resistance R2（5）Resistance
It is worth size, and then changes the point voltage swing of measurement point, single-chip microcomputer（8）Gather the voltage signal of measurement point and voltage signal will be put
Data signal is converted into, magnitude of voltage is converted into spring force and in LED digital displays（9）Upper display, the power supply（11）
Powered for whole device, and the power supply（11）By switching（10）It is controlled.
5. a kind of arthropod foot of a chela force measurement device, it is characterised in that the device includes shell（12）With installed in shell
（12）On dynamometry rod（1）, dynamometry rod（1）Including with the shell（12）The strap that is fixedly linked and positioned at fixed part
The removable clamping plate of top, removable clamping plate passes through compression spring（3）It is connected with strap；The shell（12）Interior be provided with is slided
Dynamic resistance R2（5）, ammeter（14）, switch（10）And power supply（11）, one end of removable clamping plate towards the shell is provided with
Connecting rod (4), the connecting rod（4）With swept resistance R2（5）On sliding block be connected.
6. arthropod foot of a chela force measurement device as claimed in claim 5, it is characterised in that when the dynamometry rod（1）Not by
During clamping, the swept resistance R is made2（5）Resistance be maximum, and with now ammeter（14）Pointer position be 0 scale；
When the dynamometry rod（1）In compression spring（3）When being fully compressed, the swept resistance R2（5）Resistance be minimum value, with
Now ammeter（14）Pointer position be maximum, force angle value, ammeter dial is divided with this.
7. arthropod foot of a chela force measurement device as claimed in claim 5, it is characterised in that also including single-chip microcomputer（8）With
LED digital displays（9）, described single-chip microcomputer（8）Receive the ammeter（14）The current value measured, calculates corresponding bullet
Spring force, and pass through LED digital displays（9）Shown.
8. arthropod foot of a chela force measurement device as claimed in claim 4, it is characterised in that the dynamometry rod（1）Inside and outside two
End is that the diameter of part between spherical shape, two ends is less than the diameter of two ends ball, and the removable clamping plate is located at dynamometry rod（1）
Between two balls at middle part, and mutually press close to the center section part split-phase of strap below and form corynebacterium structure；Two
The ball at end is smooth, and no matter the foot of a chela, which grips the structure where, can make it slide to movable part accurately to be measured；Removable folder
Waterproof membrane is covered between the edge and strap of plate（13）, to ensure that dynamometer internal circuit is dried；Above-mentioned corynebacterium structure
Ellipsoidal cross section, to imitate shell arc-shaped, can preferably adapt to the foot of a chela shape of arthropod.
9. arthropod foot of a chela force measurement device according to claim 4, it is characterised in that described dynamometry rod（1）Quilt
The part of clamping is provided with detachable rubber crust（2）, rubber crust（2）With fine recesses, color is black.
10. arthropod foot of a chela force measurement device according to claim 4, it is characterised in that described single-chip microcomputer（8）
Using AC8051F410 single-chip microcomputers, 8 central processing units built in the single-chip microcomputer, Flash program memory, 12 SAR simulations/numbers
Word converter, precision is high, data parallel output, and speed meets testing requirement；And by compiler keil in single-chip microcomputer（8）It is upper to compile
Journey is implanted into ucos-II, to realize strength size in record measurement process.
11. arthropod foot of a chela force measurement device according to claim 10, it is characterised in that during measurement, compression spring
（3）Drive connecting rod（4）Change slide rheostat R2（5）Resistance size, thus compression spring（3）Deformation quantity x is with sliding variable resistance
Device R2（5）Deformation quantity it is identical, slide rheostat R2（5）Change in resistance be directly proportional to its sliding distance, i.e. R3/R2=（L-x）/
L（The length of slide rheostat, R when L is unmeasured2For slide rheostat maximum value, R3For slide rheostat R2Sliding distance
Resistance during for x）, therefore by measuring R3Compression spring can further be calculated（3）Deformation quantity x, by Hooke's law F=kx（k
For compression spring stiffness factor）Foot of a chela power can be drawn；
The single-chip microcomputer（8）Receive swept resistance R2（5）With fixed value resistance R1（6）Between measurement point voltage signal U=R3/（R1+
R3）× reference voltage（Reference voltage is fixed value）, pass through A/D converter（7）Gather voltage signal U and turn voltage signal
Data signal is changed to, the binary digital signal of 4096 × U/ reference voltages, single-chip microcomputer is exported（8）According to formula U=R3/（R1+
R3）Slide rheostat R when × reference voltage calculates dynamometry3Resistance size.
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| CN201710313001.5A CN106969859A (en) | 2017-05-05 | 2017-05-05 | The measuring method and device of arthropod foot of a chela strength |
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| CN201710313001.5A CN106969859A (en) | 2017-05-05 | 2017-05-05 | The measuring method and device of arthropod foot of a chela strength |
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| CN112362215A (en) * | 2020-10-15 | 2021-02-12 | 航天信息股份有限公司 | Sensor for calculating tension of membrane strip |
| CN113049168A (en) * | 2021-03-12 | 2021-06-29 | 北京英华达电力电子工程科技有限公司 | Fan mesh bolt pretightening force monitoring devices |
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Application publication date: 20170721 |