CN108955854A - A kind of balance Weighing apparatus and calibration method - Google Patents
A kind of balance Weighing apparatus and calibration method Download PDFInfo
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- CN108955854A CN108955854A CN201810797302.4A CN201810797302A CN108955854A CN 108955854 A CN108955854 A CN 108955854A CN 201810797302 A CN201810797302 A CN 201810797302A CN 108955854 A CN108955854 A CN 108955854A
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- 238000005303 weighing Methods 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims description 16
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 36
- 238000011068 loading method Methods 0.000 claims abstract description 33
- 239000000178 monomer Substances 0.000 claims abstract description 14
- 230000005622 photoelectricity Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 44
- 241000218202 Coptis Species 0.000 claims description 18
- 235000002991 Coptis groenlandica Nutrition 0.000 claims description 18
- 235000014676 Phragmites communis Nutrition 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 10
- 230000005693 optoelectronics Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000012937 correction Methods 0.000 description 7
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- 241001282153 Scopelogadus mizolepis Species 0.000 description 2
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- 230000005484 gravity Effects 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- 239000010974 bronze Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000008054 signal transmission Effects 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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Abstract
The present invention relates to a kind of balance Weighing apparatus, including elastic monomer, weighing support chip, weighing scale support column, weighing scale, electromagnetic induction device, photoelectricity to adjust device；Weighing scale support column is connected to the input terminal of elastic monomer by weighing support chip；Wherein, the top surface of weighing scale support column is connected with cone；The bottom center of weighing scale offers the back taper connected in star coincideing with the conical surface of cone；Four side walls of weighing scale support column are sticked and have resistance strain gage, and four resistance strain gages connect into Wheatstone bridge by conducting wire, and the output end of Wheatstone bridge connects unbalance loading circuit for rectifying.By the way that resistance strain gage is arranged in weighing scale support column, unbalance loading deformation data can be accurately acquired, and data will be acquired and can reach the purpose for quickly and accurately adjusting unbalance loading by the progress data processing of unbalance loading circuit for rectifying.
Description
Technical field
The present invention relates to Weighing apparatus field more particularly to a kind of balance Weighing apparatus and calibration method.
Background technique
Traditional weighing sensor is assembled by more than 100 a discrete components, and principle and technique compare into theoretic
Ripe, since the coefficient of expansion of each discrete component is inconsistent, the variation of temperature will have adverse effect on balance, Er Qie
There is also following several respects problems in actual production and use:
Volume is big, weight weight, causes weighing poor repeatability, and when floats excessive, ultimately causes weighing value inaccuracy.And tradition
Weighing sensor is more demanding to use environment.
In electronic balance production technology, traditional weighing sensor structure is complicated, and components are various, want to assembler
Ask very high, and finished product consistency is poor, batch production quality cannot be guaranteed；Connect beryllium-bronze reed used in each component of elastomer
And hang spring and be more toxic, have an impact to the health of contact personnel.
Since traditional weighing sensor discrete component is more, reliability is low in use process, whole not sufficiently strong, transportational process
Middle spoilage is high.
Traditional most important problem of weighing sensor is made of more than 100 a discrete components, the material property of various elements
It is inconsistent, if country's electronic balance highest actual graduation value can only accomplish that 0.1mg improves scale division value, accuracy and stabilization now
Property, it is necessary to change technical thought.
With the appearance for popularizing various new materials at domestic full-automatic processing center, nowadays can prepare various parts
The modular weighing sensor of homogenous material, makes it have excellent material consistency, scale division value and accuracy can be improved.
However, it is always problem that the unbalance loading of such monomer sensor, which adjusts correction, traditional tuningout carry by by hand or
It is that robot carries out tuningout load, specific method is can be with by adjusting two position errors adjustment screws adjustment angular differences adjustment elastic slices
Correct position error, it is also possible to which file amendment elastomeric strut corrects aluminum reed with file to reach amendment position error
Purpose；These unbalance loading methods of adjustment have the disadvantage that
(1) time that unbalance loading work has accounted for the 50%-60% of factory debugging efforts is entirely repaired, time-consuming.
(2) by way of file burr, it is easy to be destroyed in the case where having filed more to the essence of sensor.
(3) tuningout load is carried out using craft or robot, it is at high cost, and artificial tuningout, there are human error, tuningout knots
Fruit is not necessarily accurate.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of balance Weighing apparatus, it is not only possible to accurately measure object
Weight magnitude, and can conveniently and effectively adjust unbalance loading.
The technical scheme to solve the above technical problems is that a kind of balance Weighing apparatus, including elastic monomer, scale
It measures support chip, weighing scale support column, weighing scale, electromagnetic induction device, photoelectricity and adjusts device；
The elastic monomer includes reed, lever mechanism, electromagnetic induction device fixed mechanism, top arm, base arm, side arm, institute
It states top arm and is separately connected the top of the electromagnetic induction device fixed mechanism and the top of the side arm by reed；The base arm
Be separately connected the bottom end of the electromagnetic induction device fixed mechanism and the bottom end of the side arm by reed, the top arm with it is described
Base arm is parallel to each other；
The input terminal of the lever mechanism is connected to the side of the side arm, and be located at the top arm and the base arm it
Between；
It is the reed, the lever mechanism, the electromagnetic induction device fixed mechanism, the top arm, the base arm, described
Side arm is integrally formed；
The electromagnetic induction device and photoelectricity adjustment device are arranged in the electromagnetic induction device fixed mechanism；
The output end of the lever mechanism is extended in the electromagnetic induction device fixed mechanism and is filled with the electromagnetic induction
Set connection；
One end of the weighing support chip is fixedly connected on the top surface of the side arm, and the other end connects the weighing scale branch
Dagger；
The weighing scale support column is cuboid, and top surface is square；The top surface of the weighing scale support column connects
It is connected to cone；
The bottom center of the weighing scale offers the back taper connected in star coincideing with the conical surface of the cone；The day
Four side walls of flat scale pan support column are sticked and have resistance strain gage, and the resistance strain gage is located at weighing scale support
At the side wall center of column；
Four resistance strain gages connect into Wheatstone bridge, the input terminal connection of the Wheatstone bridge by conducting wire
The output end of power circuit, the Wheatstone bridge connects unbalance loading circuit for rectifying.
The beneficial effects of the present invention are: being adopted by the way that resistance strain gage is arranged on all directions side wall of weighing scale support column
Collect unbalance loading deformation data, then unbalance loading deformation data is handled by unbalance loading circuit for rectifying, with fast velocity modulation, effectively adjusts unbalance loading, solve
Object is put on the scale pan, different values can be led to the problem of by being placed in different location, and use this tuningout load structure, and one
Aspect can increase the weighing area of balance, realize the big scale pan, facilitate the weighing of special irregular items, on the other hand may be used
To reduce the machining accuracy of elastic monomer, simplify adjusting process, improve production efficiency, reduces production cost.
Based on the above technical solution, the present invention can also be improved as follows.
Further, four resistance strain gages connect into Wheatstone bridge by gold thread.
Beneficial effect using above-mentioned further scheme is that resistance strain gage formation Wheatstone bridge is connected by gold thread, one
Aspect utilizes the characteristic of the outstanding conduction of gold thread, guarantees the signal transmission accuracy for the Wheatstone bridge to be formed；On the other hand due to
The lighter weight of gold thread, avoiding wire weight influences the weighing of Weighing apparatus as a result, improving weighing accuracy in turn.
Further, the input terminal of the Wheatstone bridge connects wireless charging.
Beneficial effect using above-mentioned further scheme is to connect wireless charging mould by the input terminal in Wheatstone bridge
Block, wirelessly be Wheatstone bridge charging, on the one hand eliminate wiring, on the other hand reduce the length of connecting line,
It avoids too long connecting line and receives extraneous power in use and the acquisition of the deformation data that influences resistance strain gage.
Further, the Wheatstone bridge output end connect wireless communication module, by the wireless communication module with
The unbalance loading circuit for rectifying communication.
Beneficial effect using above-mentioned further scheme is to connect radio communication mold by the output end in Wheatstone bridge
Block, is wirelessly transferred to unbalance loading circuit for rectifying for the signal of Wheatstone bridge, on the one hand eliminates wiring, another party
Face reduces the length of connecting line, avoids the shape that too long connecting line receives extraneous power in use and influences resistance strain gage
The acquisition of parameter evidence.
Further, the gold thread is in arch-shaped setting after resistance strain gage extraction.
Use above-mentioned further scheme beneficial effect be by gold thread with arch-shaped setting, can by gold thread end by
To external force laid down in arch bridge section, to prevent external force from influencing rectifying effect and weighing result.
Further, the electromagnetic induction device includes permanent magnet, magnetic cylinder sleeve, coil, magnetic cylinder cap；
The permanent magnet includes the pole S magnet and the pole N magnet, and the pole S magnet is cylindrical shape, and the pole N magnet is cylinder,
The pole N magnet is set to the pole S magnet center；The coil between the pole S magnet and the pole N magnet, and
The coil position is fixed on the output rod of the lever mechanism, and the magnetic cylinder sleeve is set in outside the permanent magnet, the magnetic cylinder
Cap is installed at the top of the magnetic cylinder sleeve.
Further, the photoelectricity adjustment device includes shielding plate, opto-electronic receiver plate and luminous tube；The anti-dazzling screen connection
In the end of the output lever of the lever mechanism, the opto-electronic receiver plate and the luminous tube are respectively arranged at the anti-dazzling screen
Two sides.
Further, the bottom end of the electromagnetic induction device is additionally provided with temperature sensor.
Beneficial effect using above-mentioned further scheme be by the bottom end of electromagnetic induction device be arranged temperature sensor,
Temperature collection information compensates so as to the temperature drift to weighing result, and then improves weighing accuracy.
Further, the unbalance loading circuit for rectifying includes processor, memory, AD converter, the processor respectively with institute
It states memory and the AD converter is electrically connected, the AD converter is connect with the output end of the Wheatstone bridge.
Beneficial effect using above-mentioned further scheme is that favour stone electricity is stored by the memory in unbalance loading circuit for rectifying
The corresponding correction data of deformation data of bridge output, then correction data are called to play the work of adjustment unbalance loading by processor
With so that unbalance loading adjustment is quick, effective.
The present invention is applied to described to also provide a kind of calibration method of balance Weighing apparatus based on above-mentioned apparatus structure
A kind of balance Weighing apparatus, wherein the lever mechanism includes sequentially connected primary lever L1, second lever L2, three-level
Lever L3 ..., n grades of lever Ln ..., output lever；
When calibrated, by the equivalent output end to the n grades of lever Ln of the weight value of the primary lever L1 input terminal, lead to
It crosses and calibrates the weight value of the input terminal of the n grades of lever Ln to calibrate the weight value of the primary lever L1 input terminal.
The utility model has the advantages that using the range accuracy amplification principle of lever ratio, by equivalent to n grades of the range of primary lever input terminal
Lever output end, then the i.e. adjustable primary lever input terminal of n grades of lever input terminals is calibrated by the counterweight of lower weight value
Larger range.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is another structural schematic diagram of the invention；
Fig. 3 is unbalance loading circuit for rectifying functional block diagram of the invention；
Fig. 4 is another functional block diagram of the invention；
Fig. 5 is more specific a kind of functional block diagram of the invention.
In attached drawing, parts list represented by the reference numerals are as follows:
1, elastic monomer, 11, reed, 12, lever mechanism, 13, electromagnetic induction device fixed mechanism, 14, top arm, 15, bottom
Arm, 16, side arm, 17, angular difference adjustment elastic slice, 2, weighing support chip, 3, magnetic cylinder sleeve, 4, coil, 5, magnetic cylinder cap, 6, opto-electronic receiver
Plate, 7, weighing scale support column, 8, cone, 9, resistance strain gage, 10, gold thread, 18, power circuit, 19, unbalance loading correction electricity
Road.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of balance Weighing apparatus provided in an embodiment of the present invention, including a kind of balance Weighing apparatus, packet
Include elastic monomer 1, weighing support chip 2, weighing scale support column 7, weighing scale, electromagnetic induction device, photoelectricity adjustment device；
Elastic monomer 1 includes reed 2, lever mechanism 12, electromagnetic induction device fixed mechanism 13, top arm 14, base arm 15, side
Arm 16, top arm 14 are separately connected the top of electromagnetic induction device fixed mechanism 13 and the top of side arm 16 by reed 2；Base arm 15
The bottom end of electromagnetic induction device fixed mechanism 13 and the bottom end of side arm 16, top arm 14 and 15 phase of base arm are separately connected by reed 2
It is mutually parallel；
The input terminal of lever mechanism 12 is connected to the side of side arm 16, and between top arm 14 and base arm 15；
Reed 2, lever mechanism 12, electromagnetic induction device fixed mechanism 13, top arm 14, base arm 15, side arm 16 are integrally formed；
Electromagnetic induction device and photoelectricity adjustment device are arranged in electromagnetic induction device fixed mechanism 13；
The output end of lever mechanism 12 is extended in electromagnetic induction device fixed mechanism 13 and is connect with electromagnetic induction device；
One end of weighing support chip 2 is fixedly connected on the top surface of side arm 16, and the other end connects weighing scale support column 7；
Weighing scale support column 7 is cuboid, and top surface is square；The top surface of weighing scale support column 7 is connected with circle
Cone 8；
The bottom center of weighing scale offers the back taper connected in star coincideing with the conical surface of cone 8；Weighing scale support
Four side walls of column 7 are sticked and have resistance strain gage 9, and resistance strain gage 9 is located at the side wall center of weighing scale support column 7
Place；
Four resistance strain gages 9 connect into Wheatstone bridge, the input terminal connection power supply electricity of Wheatstone bridge by conducting wire
The output end on road 18, Wheatstone bridge connects unbalance loading circuit for rectifying 19.
Wherein, electromagnetic induction device includes permanent magnet, magnetic cylinder sleeve 3, coil 4, magnetic cylinder cap 5；Permanent magnet include the pole S magnet and
The pole N magnet, the pole S magnet are cylindrical shape, and the pole N magnet is cylinder, and the pole N magnet is set to the pole S magnet center；Coil 4 is located at the pole S magnetic
Between body and the pole N magnet, and coil 4 are fixed on the output rod of lever mechanism 12, and magnetic cylinder sleeve 3 is set in outside permanent magnet, magnetic
Cylinder cap 5 is installed on 3 top of magnetic cylinder sleeve.
Wherein, photoelectricity adjustment device includes shielding plate, opto-electronic receiver plate 6 and luminous tube；Anti-dazzling screen is connected to Lever machine
The end of the output lever of structure 12, opto-electronic receiver plate 6 and luminous tube are respectively arranged at anti-dazzling screen two sides.
Wherein, it is additionally provided on elastic monomer and adjusts elastic slice 17 for the angular difference of first successive step unbalance loading.
In practical application scene, the object to weighing is placed on weighing scale, weighing scale is by the gravity of object
It is transmitted to weighing scale support column 7, weighing scale support column 7 moves down on weighing support chip 2, meanwhile, weighing support chip 2 connects
One end of side arm 16 is also given to 16 1 downward power of side arm.Since side arm 16 is to be connected to top arm 14 and base arm by reed 2
On 15, side arm 16 can generate downward displacement after top surface receives a downward power, and at the same time, side arm 16 will be downward
Power passes to the lever mechanism 12 being attached thereto, and the power passed over is carried out lever amplification again by lever mechanism 12, exports in thick stick
On the output lever of linkage 12, output lever is allowed to be subjected to displacement.Output lever, which is subjected to displacement, drives the screening of connection at its end
Baffle, the mobile light for blocking luminous tube in photoelectricity adjustment device of shielding plate, so that the light intensity that opto-electronic receiver plate 6 receives
It is no longer on equilibrium state, due to being provided with photo resistance on opto-electronic receiver plate 6, telecommunications can be converted by unbalanced light
Number variable by detecting whether electric signal has variable to determine whether light balances, and then determines the output lever of lever mechanism 12
Whether equilibrium state is in.
In order to which the output lever of lever mechanism 12 is adjusted meeting equilibrium state, electricity is inputted to the coil 4 of electromagnetic induction device
Stream is in the magnetic field that the pole S magnet and the pole N magnet are formed due to coil 4, and the coil 4 of input current will receive magnetic field force, by thick stick
The output lever of linkage 12 pulls back, then the continuous feedback of device is adjusted by photoelectricity, and output lever is finally retracted balance
Then state acquires input current at this time, calculate the weight value to weighing object according to input current.
It is all only generated in elastic monomer 1 by each reed 2 due to the power that entire weighing process Weighing apparatus is subject to
Deformation is transmitted, therefore power will not be depleted substantially in transmittance process, to realize high-precision weighing.
It should be noted that specific electromagnetic induction device using step, specific photoelectricity adjustment device step method and
Method for computing data and 1 course of work of specific elastic monomer are acquired, the invention of Publication No. CN106679776A can be referred to
The utility model patent of a kind of working principle of the weighing sensor suitable for electronic balance of patent, publication number CN203551054U
A kind of working principle of the integrated elastic body of electromagnetic force equilibrium formula high-precision weighing sensor and China Standards Press go out
The document electronic balance vertification regulation of version.
In addition to this, in actual application, if if be not placed at the center of weighing scale to weighing object,
Such as it is placed on the edge of weighing scale；Or weighing object sheet is as irregular object, it will supports weighing scale
Discontinuity, that is, unbalance loading of column 7, and then lead to the gravity inaccuracy acquired in Weighing apparatus input terminal, influence final weighing
As a result.
Therefore, another key point of this implementation is the weighing scale support column 7 cuboid is being arranged, and top surface is positive
It is rectangular；The top surface of weighing scale support column 7 is connected with cone 8, and the bottom center of weighing scale offers the cone with cone 8
The identical back taper connected in star in face；Four side walls of weighing scale support column 7 are sticked and have resistance strain gage 9, and resistance strain gage 9
At the side wall center of weighing scale support column 7, four resistance strain gages 9 connect into Wheatstone bridge, Hui Si by conducting wire
The input terminal of energization bridge connects power circuit 18, and the output end of Wheatstone bridge connects unbalance loading circuit for rectifying 19.
While it is working, the setting of cone 8 of the top surface of weighing scale support column 7 and the bottom center of weighing scale open
If the back taper connected in star identical with the conical surface of cone 8, which can share the non-uniform power received on weighing scale
Onto four side walls of weighing scale support column 7, when power is shared on four side walls of weighing scale support column 7, stress side wall
Certain deformation can occur, then can collect deformation in the resistance strain gage of side wall 9, then by by four resistance strain gages 9
Wheatstone bridge is connected into, deformation can be converted to electric signal, the electric signal is finally input to unbalance loading circuit for rectifying 19, by inclined
It carries and the weighing part acquisition data of Weighing apparatus is combined to carry out school after the electric signal that circuit for rectifying 19 generates deformation is handled
Just, it is finally reached the effect for adjusting unbalance loading.
Wherein, cuboid is arranged in weighing scale support column 7, and it is to allow resistance strain gage 9 to have that top surface, which is square,
Better contact surface.
The cone with cone 8 that the cone 8 on 7 top of weighing scale support column and the bottom center of weighing scale open up
The design of the identical back taper connected in star in face be in order to which weighing scale support column 7 and weighing scale have bigger contact surface, make by
Power is more uniform.
Wherein, as shown in Figure 3: unbalance loading circuit for rectifying 19 include processor, memory, AD converter, processor respectively with
Memory and AD converter are electrically connected, and the output end of AD converter and Wheatstone bridge connects.
Wherein, it is previously stored with the corresponding correction data of deformation data obtained by relationship training in memory, works as favour
It after stone electric bridge exports deformation data, is transferred in processor through AD converter, processor is searched out in memory again and is somebody's turn to do
The weighing part for correcting data combination Weighing apparatus is acquired number again by the corresponding correction data of deformation data, subsequent processor
According to the weighing data being computed after obtaining correction.
Wherein, AD converter can be 24 or 32, and processor can be PC machine, single-chip microcontroller, PLC etc..
In actual application, Wheatstone bridge is connected into since resistance strain gage 9 needs to pick out conducting wire, conducting wire
Quality can the side wall deformation to weighing scale support column 7 have an impact.
It is preferred, therefore, that, four resistance strain gages 9 connect into Wheatstone bridge by gold thread 10.It is connected by gold thread 10
Resistance strain gage 9 forms Wheatstone bridge, on the one hand utilizes the characteristic of the outstanding conduction of gold thread 10, guarantees the Wheatstone bridge to be formed
Signal transmit accuracy；On the other hand due to the lighter weight of gold thread 10, avoiding wire weight influences the scale of Weighing apparatus
Weight as a result, improve weighing accuracy in turn.
Preferably, as shown in Figure 4: the input terminal of Wheatstone bridge connects wireless charging module.By in Wheatstone bridge
Input terminal connect wireless charging module, wirelessly be Wheatstone bridge charging, on the one hand eliminate wiring, another party
Face reduces the length of connecting line, avoids too long connecting line and receives extraneous power in use and influence resistance strain gage 9
The acquisition of deformation data.
Preferably, as shown in Figure 5: the output end of Wheatstone bridge connects wireless communication module, by wireless communication module
It is communicated with unbalance loading circuit for rectifying 19.Wireless communication module is connected by the output end in Wheatstone bridge, wirelessly
The signal of Wheatstone bridge is transferred to unbalance loading circuit for rectifying 19, wiring is on the one hand eliminated, on the other hand reduces connecting line
Length, avoid too long connecting line and receive extraneous power in use and the acquisition of the deformation data that influences resistance strain gage 9.
It should be noted that wireless communication module can be bluetooth module, WI F I module, 4G module etc., more specifically
, bluetooth module is T I CC2541/0 module；WI F I module is ESP-07S.
Preferably, as shown in Figure 2: gold thread 10 from resistance strain gage 9 extraction after be in arch-shaped setting, by gold thread 10 with
The external force that 10 end of gold thread is subject to can be laid down in arch bridge section, 10 stress of gold thread is avoided to transfer force to company by arch-shaped setting
9 end of connecting resistance foil gauge acquires deformation data to shadow resistance strain gage 9, to prevent external force from influencing rectifying effect and weighing knot
Fruit.
The calibration method for present embodiments providing a kind of balance Weighing apparatus, a kind of balance Weighing apparatus being applied to,
In, lever mechanism 12 include sequentially connected primary lever L1, second lever L2, three-level lever L3 ..., n grades of levers
Ln ..., output lever；
When calibrated, by the equivalent output end to n grades of lever Ln of the weight value of primary lever L1 input terminal, by calibrating n
The weight value of the input terminal of grade lever Ln calibrates the weight value of primary lever L1 input terminal.It is put using the range accuracy of lever ratio
Big principle is calibrated by equivalent to n grades lever output ends of the range of primary lever input terminal, then by the counterweight of lower weight value
The larger range of n grades of lever input terminals, that is, adjustable primary lever input terminal.
In actual application, the scale of such as 60kg has to the counterweight of 60kg to be calibrated in the past, if range is more
Difficulty is big when big scale actual alignment, and operate inconvenience, especially when factory floor etc. needs to calibrate, is difficult to realize very much
Fast and accurately calibrate.
Structure here, using the principle of the lever ratio of lever mechanism 12 in Weighing apparatus, such as at 1kg lever is made
Adjustment stretches out a lever in that lever opposite direction of 1kg, and the lever stretched out here can actually be equal to thick stick with the weight of 1kg
The weight of bar end 60kg, the counterweight for putting 1kg herein as a result, have just calibrated the scale of 60kg.So that calibration is simple
Change, easy to carry out, calibration accuracy is high, and calibration speed is accelerated, and operation simplifies.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of balance Weighing apparatus, which is characterized in that including elastic monomer (1), weighing support chip (2), weighing scale support
Column (7), weighing scale, electromagnetic induction device, photoelectricity adjust device；
The elastic monomer (1) includes reed (11), lever mechanism (12), electromagnetic induction device fixed mechanism (13), top arm
(14), base arm (15), side arm (16), the top arm (14) are separately connected the fixed machine of the electromagnetic induction device by reed (11)
The top of structure (13) and the top of the side arm (16)；The base arm (15) is separately connected the electromagnetic induction by reed (11)
The bottom end of device fixed mechanism (13) and the bottom end of the side arm (16), the top arm (14) and the base arm (15) are mutually flat
Row；
The input terminal of the lever mechanism (12) is connected to the side of the side arm (16), and is located at the top arm (14) and described
Between base arm (15)；
The reed (11), the lever mechanism (12), the electromagnetic induction device fixed mechanism (13), the top arm (14),
The base arm (15), the side arm (16) are integrally formed；
The electromagnetic induction device and photoelectricity adjustment device are arranged in the electromagnetic induction device fixed mechanism (13)；
The output end of the lever mechanism (12) extend in the electromagnetic induction device fixed mechanism (13) with the electromagnetism sense
Device is answered to connect；
One end of the weighing support chip (2) is fixedly connected on the top surface of the side arm (16), and the other end connects the balance weighing apparatus
Disk support column (7)；
The weighing scale support column (7) is cuboid, and top surface is square；The top surface of the weighing scale support column (7)
It is connected with cone (8)；
The bottom center of the weighing scale offers the back taper connected in star coincideing with the conical surface of the cone (8)；The day
Four side walls of flat scale pan support column (7) are sticked and have resistance strain gage (9), and the resistance strain gage (9) is located at the day
At the side wall center of flat scale pan support column (7)；
Four resistance strain gages (9) connect into Wheatstone bridge, the input terminal connection of the Wheatstone bridge by conducting wire
The output end of power circuit (18), the Wheatstone bridge connects unbalance loading circuit for rectifying (19).
2. a kind of balance Weighing apparatus according to claim 1, which is characterized in that four resistance strain gages (9) pass through
Gold thread (10) connects into Wheatstone bridge.
3. a kind of balance Weighing apparatus according to claim 1 or claim 2, which is characterized in that the input terminal of the Wheatstone bridge
Connect wireless charging.
4. a kind of balance Weighing apparatus according to claim 3, which is characterized in that the output end of the Wheatstone bridge connects
Wireless communication module is communicated by the wireless communication module with the unbalance loading circuit for rectifying (19).
5. according to a kind of balance Weighing apparatus of claim 2 or 4, which is characterized in that the gold thread (10) is from the resistance
Foil gauge (9) is in arch-shaped setting after drawing.
6. a kind of balance Weighing apparatus according to claim 1, which is characterized in that the electromagnetic induction device includes permanent magnetism
Body, magnetic cylinder sleeve (3), coil, magnetic cylinder cap (5)；
The permanent magnet includes the pole S magnet and the pole N magnet, and the pole S magnet is cylindrical shape, and the pole N magnet is cylinder, described
The pole N magnet is set to the pole S magnet center；The coil is and described between the pole S magnet and the pole N magnet
Coil position is fixed on the output rod of the lever mechanism (12), and the magnetic cylinder sleeve (3) is set in outside the permanent magnet, the magnetic
Cylinder cap (5) is installed at the top of the magnetic cylinder sleeve (3).
7. a kind of balance Weighing apparatus according to claim 1, which is characterized in that the photoelectricity adjustment device includes blocking
Piece, opto-electronic receiver plate (6) and luminous tube；The anti-dazzling screen is connected to the end of the output lever of the lever mechanism (12),
The opto-electronic receiver plate (6) and the luminous tube are respectively arranged at the anti-dazzling screen two sides.
8. a kind of balance Weighing apparatus according to claim 1, which is characterized in that the bottom end of the electromagnetic induction device is also set
It is equipped with temperature sensor.
9. a kind of balance Weighing apparatus according to claim 1, which is characterized in that the unbalance loading circuit for rectifying (19) includes place
Device, memory, AD converter are managed, the processor is electrically connected with the memory and the AD converter respectively, the AD
Converter is connect with the output end of the Wheatstone bridge.
10. a kind of calibration method of balance Weighing apparatus, which is characterized in that be applied to claim 1-9 described in any item one
Kind balance Weighing apparatus, wherein the lever mechanism includes sequentially connected primary lever L1, second lever L2, three-level lever
L3 ..., n grades of lever Ln ..., output lever；
When calibrated, by the equivalent output end to the n grades of lever Ln of the weight value of the primary lever L1 input terminal, pass through school
The weight value of the input terminal of the quasi- n grades of lever Ln calibrates the weight value of the primary lever L1 input terminal.
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| CN201810797302.4A CN108955854A (en) | 2018-07-19 | 2018-07-19 | A kind of balance Weighing apparatus and calibration method |
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| CN201810797302.4A CN108955854A (en) | 2018-07-19 | 2018-07-19 | A kind of balance Weighing apparatus and calibration method |
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| CN110411332A (en) * | 2019-09-03 | 2019-11-05 | 中国工程物理研究院化工材料研究所 | A kind of system and method for test resistance gauge factor |
| CN110702202A (en) * | 2019-09-03 | 2020-01-17 | 湖北省计量测试技术研究院 | Electronic balance on-line metering method and system based on cloud computing platform |
| CN110954268A (en) * | 2019-12-20 | 2020-04-03 | 电子科技大学中山学院 | Unbalance loading calibration system |
| CN111649813A (en) * | 2020-06-18 | 2020-09-11 | 深圳市计量质量检测研究院（国家高新技术计量站、国家数字电子产品质量监督检验中心） | Electronic scale detection method based on wifi assistance |
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