CN104101416B - Without the balance of weights - Google Patents
Without the balance of weights Download PDFInfo
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- CN104101416B CN104101416B CN201410381751.2A CN201410381751A CN104101416B CN 104101416 B CN104101416 B CN 104101416B CN 201410381751 A CN201410381751 A CN 201410381751A CN 104101416 B CN104101416 B CN 104101416B
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- movable blade
- balance
- weighing
- pulling force
- force sensor
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Abstract
Without a balance for weights, the invention belongs to a technical field of weighing apparatus.In order to balance is not when using weights, obtain the high precision in large range of weighing and large range of weighing, the present invention is at one end of crossbeam hanging hanging scaffold, the other end of crossbeam is connected with pulling force sensor, the other end connection bracket of pulling force sensor, pulling force sensor connects single-chip microcomputer, movable blade bearing drive support is equipped with and multiple movable blade is held, the place that crossbeam holds in each movable blade of aligning has the edge of a knife, movable blade holds that driven by movable blade bearing drive can in order elevating movement up and down, and single-chip microcomputer connects movable blade bearing drive and display screen; Hold owing to support being provided with multiple movable blade, different arm ratios can be obtained like this on crossbeam.This is equivalent to zooming in or out the range of weighing of pulling force sensor.The present invention has the advantage of mechanical balance and electronic balance, and achieve cannot the automatic weighing of wide range of code simultaneously.It enormously simplify weighing work.
Description
Technical field
The invention belongs to a technical field of weighing apparatus.
Background technology
Balance is mainly divided into mechanical balance and the large class of electronic balance two.Balance is the main weighing apparatus weighing micro weight.Mechanical balance under prior art, has range of weighing large, the advantage that the electronic balances such as sensibility reciprocal (sensitivity or precision) is little do not have.Its sensibility reciprocal depends primarily on its structure and machining precision.Its weighing is mainly by changing different weights to change, and not enough part is mended enough by rider.So weights is the important composition part of balance, the accuracy of weights is directly connected to the accuracy of balance weighing.The use of weights simultaneously brings certain trouble to the operation of balance, and the keeping of weights brings trouble to user equally, and it is once lose, and just directly affects the range of weighing of balance, even cannot normally work; On the other hand, weigh weight with mechanical balance, when weight exceeds the weight of weights, exceeding part must make balance both sides balance by mobile rider.In the process of mobile code, be easy to cause interference to the balance of balance artificially, make weighing operation become complicated and difficulty uprises.These are all the obvious deficiencies of mechanical balance.
Electronic balance need not weights, and maximum benefit is easy to use.But the range of weighing of each electronic balance is fixing and is very limited.When being a bit larger tham the range of weighing of electronic balance by title thing, its error will become very large.When being claimed thing much smaller than the maximum capacity of electronic balance, its error becomes very large equally.In the occasion needing to weigh in a big way, such as, from several grams to several kilograms, multiple electronic balance have to be prepared for meeting accuracy requirement people.But the absolute error of electronic balance weighs the increase of rank along with it and increases.Therefore, under requiring large weighing and high-precision situation at the same time, electronic balance is " unable to do what one wishes ".In these areas, electronic balance can not show a candle to mechanical balance, because mechanical balance changes range of weighing by changing weights, and after changing range of weighing, its sensibility reciprocal (sensitivity or precision) is substantially constant.This is that current electronic balance cannot be accomplished.
From the above, mechanical balance and electronic balance respectively have merits and demerits, if both can be combined, make up for each other's deficiencies and learn from each other, and make balance when without weights, same obtain the large high precision weighed in model be the most desirable only.Balance not such in unfortunate prior art.
Summary of the invention
In order to balance is not when using weights, obtain the high precision in large range of weighing and large range of weighing, this invention takes following technical measures: one end of crossbeam is hung with hanging scaffold, the other end of crossbeam is connected with pulling force sensor, the other end connection bracket of pulling force sensor, pulling force sensor connects single-chip microcomputer, movable blade bearing drive support is equipped with and multiple movable blade is held, the place that crossbeam holds in each movable blade of aligning has the edge of a knife, movable blade holds that driven by movable blade bearing drive can in order elevating movement up and down, single-chip microcomputer connects movable blade bearing drive and display screen.
Benefit of the present invention is: basic structure of the present invention remains mechanical balance, owing to support being provided with movable blade bearing drive and multiple movable blade is held, makes balance that the movable blade of diverse location can be used to hold support crossbeam.On crossbeam, the movable blade of diverse location is held is exactly the fulcrum of diverse location, can obtain like this being greater than on crossbeam 1 and be less than 1 the arm ratio ratio of right arm (left arm with).Root institute lever principle is known, and different arms is loaded on pulling force sensor than making the weight on hanging scaffold by this arm ratio, and this is equivalent to zooming in or out the maximum capacity scope of pulling force sensor.Pulling force sensor is equivalent to an electronic balance.Therefore, such structure has widened weighing and the sensibility reciprocal scope of pulling force sensor (electronic balance) greatly.Even if make balance also can consecutive weighings weight within a large range without weights, and, still can keep highly sensitive amount sense in the larger weight amount of weighing.On the other hand, owing to present invention uses single-chip microcomputer, it makes the operation of this balance automatically carry out and need not manual intervention.The present invention has the advantage of mechanical balance and electronic balance without the balance of weights, and achieve cannot the automatic weighing of wide range of code simultaneously.And it enormously simplify weighing work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the balance without weights.
In figure: hanging scaffold 1, crossbeam 2, movable blade hold 3, cam 4, camshaft 5, support 6, follower gear 7, magnetite 8, hall sensing head 9, stepper motor 10, pulling force sensor 11.
Embodiment
Movable blade bearing drive described in the application, refers to and can manually or can, according to the instruction of computing machine (single-chip microcomputer), drive movable blade to hold machinery or the electromechanical assembly of lifting in order.Movable blade bearing drive has various form, such as, and actuated by cams formula, motor screw drive-type and manual actuation formula etc.The present invention does not have particular/special requirement to movable blade bearing drive, all movable blade can be driven to hold in order lifting machinery or electromechanical assembly be all applicable to the present invention's use.
Example 1: actuated by cams formula movable blade bearing drive structure is as follows: install multiple movable blade on the frame 6 and hold 3, movable blade holds 3 liftable motions under the driving of cam 4.Support 6 is movably installed with camshaft 5, camshaft 5 is installed with multiple cam 4, the end face center line between cam is staggered at an ang, and makes to only have whenever at most actuated by cams movable blade to hold rise.Camshaft 5 is equipped with follower gear 7, follower gear 7 is equipped with magnetite 8 and together with the gear mesh on stepper motor 10 axle.Make that stepper motor can drive follower gear, camshaft rotates together with cam.On the frame 6, the circumference side of magnetite 8 process, is equipped with Hall element.Hall element connects single-chip microcomputer, and single-chip microcomputer connects controllor for step-by-step motor, and controllor for step-by-step motor connects stepper motor driver, and stepper motor driver connects stepper motor 10 as shown in Figure 1.Such structure makes stepper motor can operate by the instruction of single-chip microcomputer.Follower gear 7 turns to magnetite 8 when Hall element 9, and Hall element sends movable blade bearing drive and resets successful signal to single-chip microcomputer.At this moment all cams leave movable blade and hold, and all movable blade hold the armed state being in below.The principle of work of actuated by cams formula movable blade bearing drive is: when connecting the power supply of balance, enter normal operating conditions after monolithic processor resetting.The signal following microprocessor detect Hall element to transmit, determines that whether actuated by cams formula movable blade bearing drive is at reset mode.If it is not at reset mode, single-chip microcomputer will send instruction to controllor for step-by-step motor, stepper motor driver etc., and control step motor 10 rotates.Stepper motor 10 is rotated by gear driven follower gear 7, magnetite 8, camshaft 5 and cam 4.When follower gear 7 rotation makes magnetite 8 aim at Hall element 9, the magnetic field of magnetite 8 makes Hall element send electric signal to single-chip microcomputer.Single-chip microcomputer sends instruction after receiving this signal immediately, is closed down the power supply of stepper motor 10 by electric machine controller, makes stepper motor 10 stop operating.At this moment all cams 4 depart from movable blade and hold 3 and be parked in armed state.All movable blade on support 6 hold the armed state that 3 all drop to lower dead center, at this moment do not have movable blade to hold independent support crossbeam 2.Actuated by cams formula movable blade bearing drive has resetted; Operationally, single-chip microcomputer can rotate certain number of turns by control step motors 10 such as controllor for step-by-step motor to some directions, drives different cams 4 different movable blade to be held 3 orderly upwards jack-up crossbeams 2 successively, becomes the new fulcrum of crossbeam 2.That is, motor 10 is to often often rotating certain number of turns to a direction, just can change a cam and another movable blade be held 3 upwards jack-up support crossbeams 2, be equivalent to the fulcrum changing crossbeam 2 to a direction, complete the driving task of holding 3 support crossbeams 2 by the different movable blade of the order-driven of single-chip microcomputer.
The structure of this example is: one end of crossbeam 2 is hung with hanging scaffold 1, the other end of crossbeam 2 is hung with pulling force sensor 11, the other end connection bracket 6 of pulling force sensor 11, pulling force sensor 11 connects single-chip microcomputer, movable blade bearing drive support 6 is equipped with and multiple movable blade holds 3, crossbeam 2 has the edge of a knife aiming at the place that each movable blade holds 3, and movable blade is held 3 and is driven by movable blade bearing drive, can elevating movement in order up and down.Single-chip microcomputer connects movable blade bearing drive and display screen.
This routine principle of work: the knife edge that movable blade holds 3 is exactly the fulcrum of crossbeam 2, hold support crossbeam 2 by the movable blade of diverse location, the position changing fulcrum exactly and the ratio changing left and right arms (changing arm ratio), be just equivalent to change different weights.So just can weigh the object of Different Weight grade.According to lever principle, on pulling force sensor 11, the pulling force data of record is multiplied by the arm ratio on crossbeam 2, is exactly the weight of weighed object.Arm ratio can be greater than 1, also can be less than 1.At this moment be equivalent to the maximum capacity mitigation and amplification of pulling force sensor 11, the multiple zoomed in or out equals arm ratio.Arm ratio can accomplish that N doubly, or N/mono-times.This is bright can doubly to amplify or N/mono-times reduces the range of weighing (the full scale weighing value of pulling force sensor 11) of pulling force sensor 11 by N.So greatly expanding a pulling force sensor 11(essence is equivalent to an electronic balance) range of weighing.Make balance realize when weights need not be changed weighing on a large scale simultaneously; How to change the position of fulcrum? present invention employs multiple movable blade for this reason and hold 3, and drive movable blade to hold the technical scheme of 3 support crossbeams 2 with movable blade bearing drive.Multiple movable blade holds the left and right diverse location that 3 are distributed in crossbeam 2, holds 3 come the position that support crossbeam 2 just can change crossbeam 2 fulcrum by different movable blade; The course of work of the present invention is: when user opens the power switch of balance, first be monolithic processor resetting.After single-chip microcomputer normally works by Hall element detected activity cutter bearing drive whether in reset armed state.After single-chip microcomputer and movable blade bearing drive complete reset, balance just can enter normal duty.At this moment user can put hanging scaffold 1 into waiting to claim object, and then press switch of weighing, single-chip microcomputer performs by blas instruction of weighing.Because the weight treating title object do not known by prior balance, so at the beginning, balance will arrange the weight weighing object with maximum weighing.Namely the movable blade risen closest to hanging scaffold 1 is held 3 and is carried out support crossbeam 2.When weighed object is much smaller than the weighing of current setting, the data that pulling force sensor 11 is recorded are very little.The data that single-chip microcomputer transmits according to pulling force sensor 11, by blas, determine that changing next movable blade to the direction away from hanging scaffold 1 holds 3 to change arm ratio, and constantly must answer this process, until pulling force sensor 11 record close to fully loaded data till.At this moment the weight of weighed object is multiplied by arm ratio with regard to the data equaling pulling force sensor 11 and claim.Due to hanging scaffold cutter peak hold the peak-to-peak distance of cutter of 3 to movable blade, each movable blade hold between distance, movable blade hold cutter peak to pulling force sensor cutter peak apart from etc. all preset.In other words, rise different movable blade to hold and just have fixing arm ratio.Single-chip microcomputer than the weight calculating weighed object, shows report user by display screen according to current arm.
example 2:compared with the actuated by cams formula movable blade bearing drive of a upper example, this routine difference is that the mechanism driving movable blade to hold 3 is not cam, but screw rod and motor.Motor screw drive-type movable blade bearing drive mainly comprises travel switch, screw rod, motor, electric machine controller etc., its structure is as follows: install multiple movable blade on the frame 6 and hold 3, support 6 is equipped with travel switch holds 3 duty (rise support crossbeam 2 or fall and deactivate) for detected activity cutter.Travel switch connects single-chip microcomputer, and the lower end that movable blade holds 3 is processed with internal thread, and movable blade is held 3 and linked together by internal thread and screw flight, electric motor driven screw rotation.Motor connects electric machine controller, and electric machine controller connects single-chip microcomputer.The principle of work of motor screw drive-type movable blade bearing drive is: each movable blade is held 3 and driven by a motor, on the frame 6 simultaneously, travel switch is equipped with in the position that each movable blade corresponding holds 3, holds the duty of 3 for detected activity cutter.When connecting the power supply of balance, after monolithic processor resetting enters normal operating conditions.And then microprocessor detect movable blade holds the status information of 3.The reset mode that movable blade holds 3 is the standby position that all movable blade hold that 3 are all in bottom, does not at this moment have movable blade to hold independent support crossbeam 2.In testing process, 3 are held not when reset mode (namely not in below) when there being cutter movable blade, signal is dealt into single-chip microcomputer by the travel switch that dress this movable blade on the frame 6 holds 3, single-chip microcomputer sends instruction by the electric machine controller driving this movable blade to hold 3, controls this motor and drives this movable blade to hold 3 to return reset mode.After all movable blade hold 3 resets, the motor that single-chip microcomputer can be different by different motor controller controls, drive different movable blade to hold tasks that 3 rise in order support crossbeams 2, realize holding 3 by the different movable blade of the order-driven of single-chip microcomputer and to execute the task target.
The structure of this example is except movable blade bearing drive difference, and remaining is all substantially identical.Its course of work is: when user opens the power switch of balance, after single-chip microcomputer and movable blade hold 3 resets, balance just can enter normal duty.At this moment user can put hanging scaffold 1 into waiting to claim object, and then press switch of weighing, single-chip microcomputer performs by blas instruction of weighing.Because prior balance does not know the weight treating title object, so balance will arrange the weight weighing current object with maximum weighing.Namely the movable blade risen closest to hanging scaffold 1 is held 3 and is carried out support crossbeam 2.When weighed object is much smaller than the weighing of current setting, the data that pulling force sensor 11 is recorded are very little.The data that single-chip microcomputer transmits according to pulling force sensor 11, by blas, determine that changing next movable blade to the direction away from hanging scaffold 1 holds 3, until pulling force sensor 11 record close to fully loaded data till.At this moment the weight of weighed object is multiplied by arm ratio with regard to the data equaling pulling force sensor and claim.Due to hanging scaffold cutter peak hold the peak-to-peak distance of cutter of 3 to movable blade, each movable blade hold between distance, movable blade hold cutter peak to pulling force sensor cutter peak apart from etc. all preset.In other words, rise different movable blade to hold and just have fixing arm ratio.Single-chip microcomputer than the weight calculating weighed object, shows report user by display screen according to current arm.
Claims (1)
1. without the balance of weights, mainly comprise movable blade bearing drive, movable blade is held (3), support (6), crossbeam (2), pulling force sensor (11), single-chip microcomputer, display screen, it is characterized in that: one end of crossbeam (2) is hung with hanging scaffold (1), the other end of crossbeam (2) is connected with pulling force sensor (11), the other end connection bracket (6) of pulling force sensor (11), pulling force sensor (11) connects single-chip microcomputer, movable blade bearing drive is equipped with support (6) and multiple movable blade is held (3), the place that crossbeam (2) holds in each movable blade of aligning has the edge of a knife, movable blade is held (3), and driven by movable blade bearing drive can in order elevating movement up and down, single-chip microcomputer connects movable blade bearing drive and display screen, described movable blade bearing drive, refers to and can manually or can, according to the instruction of computing machine, drive movable blade to hold machinery or the electromechanical assembly of lifting in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381751.2A CN104101416B (en) | 2014-08-05 | 2014-08-05 | Without the balance of weights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381751.2A CN104101416B (en) | 2014-08-05 | 2014-08-05 | Without the balance of weights |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104101416A CN104101416A (en) | 2014-10-15 |
| CN104101416B true CN104101416B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410381751.2A Expired - Fee Related CN104101416B (en) | 2014-08-05 | 2014-08-05 | Without the balance of weights |
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| Country | Link |
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| CN (1) | CN104101416B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776897A (en) * | 2015-04-16 | 2015-07-15 | 南京信息工程大学 | Balance type high-precision electronic weighing device and weighing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB970788A (en) * | 1962-09-13 | 1964-09-23 | Oertling Ltd | Improvements in or relating to balances for fine weighing |
| CN86100686A (en) * | 1985-03-06 | 1987-06-10 | 株式会社岛津制作所 | Balance |
| CN1032076A (en) * | 1988-08-30 | 1989-03-29 | 熊彬林 | Balance type measuring steelyard |
| CN200979452Y (en) * | 2006-11-28 | 2007-11-21 | 孙凯 | A blade bracing structure and a spiral scale with such structure |
| JP3178842U (en) * | 2012-07-23 | 2012-10-04 | 株式会社ナナミ | Weighing scale for teaching materials |
-
2014
- 2014-08-05 CN CN201410381751.2A patent/CN104101416B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB970788A (en) * | 1962-09-13 | 1964-09-23 | Oertling Ltd | Improvements in or relating to balances for fine weighing |
| CN86100686A (en) * | 1985-03-06 | 1987-06-10 | 株式会社岛津制作所 | Balance |
| CN1032076A (en) * | 1988-08-30 | 1989-03-29 | 熊彬林 | Balance type measuring steelyard |
| CN200979452Y (en) * | 2006-11-28 | 2007-11-21 | 孙凯 | A blade bracing structure and a spiral scale with such structure |
| JP3178842U (en) * | 2012-07-23 | 2012-10-04 | 株式会社ナナミ | Weighing scale for teaching materials |
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| Publication number | Publication date |
|---|---|
| CN104101416A (en) | 2014-10-15 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Du Xudong Inventor after: Hu Daguang Inventor before: Hu Daguang |
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Effective date of registration: 20160318 Address after: 523051 Guangdong city of Dongguan province Dongcheng District District No. 42 West Haruki Zhang Fang Applicant after: Lu Bixian Address before: Guangdong province Dongguan City Wanjiang 523051 liuyongwei Fen Xi Lu Nan Yi Xiang No. 6 three Applicant before: Hu Daguang |
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Effective date of registration: 20161201 Address after: 215000 Shengze, Jiangsu, China Town, Shengze, West No. two ring road, No. 1188 China Textile Technology Park, Wujiang, building 10 Patentee after: Suzhou favourite son's Information technology company limited Address before: 523051 Guangdong city of Dongguan province Dongcheng District District No. 42 West Haruki Zhang Fang Patentee before: Lu Bixian |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20170805 |