CN112146741A - Error compensation electronic scale - Google Patents
Error compensation electronic scale Download PDFInfo
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- CN112146741A CN112146741A CN202011055762.3A CN202011055762A CN112146741A CN 112146741 A CN112146741 A CN 112146741A CN 202011055762 A CN202011055762 A CN 202011055762A CN 112146741 A CN112146741 A CN 112146741A
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- electronic scale
- base
- metering disc
- bearing plate
- error
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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
Abstract
An error compensation electronic scale solves the problems that the electronic scale is inaccurate in measurement after being used for a long time, and needs to be frequently maintained and replaced; the technical scheme for solving the technical problem comprises a base, wherein a bearing plate is arranged above the base, a metering disc arranged at the lower part of the bearing plate is arranged on the base, a plurality of sensors which are uniformly distributed on the circumference are arranged on the metering disc, a groove which is the same as the metering disc in size is arranged at the lower end of the bearing plate, a plurality of pressing tables which are uniformly distributed on the circumference are arranged in the groove, when the base does not work, the pressing tables are in contact with the sensors but do not generate pressure, a driving device positioned at the lower part of the metering disc is arranged on the base, and a driving shaft which can be used for driving the metering disc is connected onto the driving device; the base is provided with a power supply assembly; the invention has compact structure, and can improve the service life of the sensor and the measurement accuracy of the electronic scale.
Description
Technical Field
The invention relates to the technical field of electronic weighing, in particular to an error compensation electronic scale.
Background
Generally, an electronic scale is constituted as follows: a load sensor incorporated in the load detection means detects a load generated by the load of the object to be measured, and digital conversion data obtained by digitizing the detection signal is collected every moment and displayed on a display as a measured value.
For such electronic scales, especially for high precision electronic scales, the ratio of the maximum weighing value to the minimum weighing unit value is even 1/160-1/200 ten thousand (0.5 PPM). However, electronic components and other components have a large temperature dependence, or the electronic characteristics and mechanical characteristics change with time; therefore, electronic scales are generally equipped with a calibration function. The calibration is performed by loading an external weight for calibrating sensitivity or a built-in weight of an electronic scale, whose mass is known, on a load detecting section and updating a sensitivity coefficient for mass conversion so that a measurement display value in this state matches the mass of the weight for calibration, and this operation is generally called sensitivity calibration or span calibration. However, the sensitivity calibration is performed not only at the time of setting the electronic scale but also at any time as needed in order to eliminate a sensitivity change due to a change in the components of the electronic scale over time or the like, or when a preset temperature change occurs, or periodically at predetermined time intervals in a use state.
In the in-service use process, because environmental condition's influence and long-time frequent use back, certain deviation can appear in the sensor, need carry out the error correction, there are many sensors because characteristic problem, need resume after the long-time use, just can resume to accurate state, but present electronic scale can't satisfy this requirement in the use, when measuring inaccurately, often can direct maintenance or the electronic scale of renewal, it is unreasonable like this.
Disclosure of Invention
The invention aims to provide an error compensation electronic scale, which solves the problems that the measurement of the electronic scale is inaccurate after the electronic scale is used for a long time, and the electronic scale needs to be frequently maintained and replaced in the prior art.
The invention provides an error compensation electronic scale, which comprises a base, wherein a bearing plate is arranged above the base, a metering disc arranged at the lower part of the bearing plate is arranged on the base, a plurality of sensors which are uniformly distributed on the circumference are arranged on the metering disc, a groove which is the same as the metering disc in size is arranged at the lower end of the bearing plate, a plurality of pressing tables which are uniformly distributed on the circumference are arranged in the groove, when the electronic scale does not work, the pressing tables are in contact with the sensors but do not generate pressure, a driving device which is arranged at the lower part of the metering disc is arranged on the base, and a driving shaft which can be used for driving the metering disc is connected on the driving device; and a power supply assembly is arranged on the base.
Preferably, the edge part of the upper end face of the base is provided with a plurality of supporting blocks circumferentially distributed on the upper end face of the base, and the end face of each supporting block is provided with a first blind hole.
Preferably, the lower end of the bearing plate is provided with support rods in one-to-one correspondence with the support blocks, the outer portion of each support rod is sleeved with a first spring, one end of each first spring is connected to the bottom of the bearing plate, and the other end of each first spring is connected to the upper end face of each support block and used for supporting the bearing plate.
Preferably, the lower end of the supporting rod is inserted into the first blind hole in the supporting block, and when the bearing plate is not bearing the weight, the lower end of the supporting rod is not in contact with the bottom of the first blind hole.
Preferably, the bottom of each first blind hole is provided with a first electromagnet, the lower end of each support rod is provided with a first magnetic block, and the first electromagnet can be electrified to drive the bearing plate to press the sensor through adsorption of the first electromagnet.
Preferably, the number of the pressure applying platforms is 1/3 of the number of the sensors.
Preferably, the driving device is a stepping motor, the base is provided with a control module, the control module can control the rotation of the stepping motor, and the angle of the stepping motor which rotates once is 120 degrees.
Preferably, the upper end of drive shaft be equipped with the second blind hole of a plurality of circumference equipartitions, the lower extreme of metering disc is equipped with a plurality of telescopic links with second blind hole one-to-one, the bottom of second blind hole be equipped with the second electro-magnet, the end of telescopic link is equipped with the second magnetic path, the telescopic link install in the mounting hole of metering disc lower extreme, the bottom surface of telescopic link and mounting hole between be connected with the second spring, the telescopic link do not stretch out the mounting hole under the effect of second spring.
Preferably, a ball is arranged between the metering disc and the base.
Preferably, the power supply assembly adopts a rechargeable battery.
The invention designs a sensor switching structure adopting mechanical transmission, the performance of the sensor is detected by applying constant pressure in advance through the first electromagnet, when the detection result shows deviation, the measuring disc is controlled to rotate at the moment, the bearing plate is enabled to be used for measurement corresponding to different sensors, in the rotating process, the driving device is enabled to rotate effectively after being fixed on the measuring disc through the ball and the second electromagnet, the sensor group capable of carrying out accurate measurement is determined to be used, the alternative use of a plurality of sensors can be ensured through switching, the fatigue caused by frequent use is reduced, for accurate measurement, the switching can be controlled to realize repeated measurement of a plurality of different sensor groups, and the most accurate measurement result is achieved.
In summary, the technical scheme of the invention at least has the following beneficial effects:
1. the sensor with the replaceable use state is attached to the sensor, so that all the sensors can guarantee a longer service life and measurement accuracy;
2. the mechanical drive is combined with the mutual cooperation of an electronic system, so that the switching is convenient, accurate and effective;
3. the function of applying constant pressure by adopting an electromagnet for calibration is proposed for the first time;
4. the whole structure is compact, the volume of the electronic scale can not be increased, and the electronic scale can be realized without adding excessive accessories.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic bottom view of the carrier plate of the present invention;
FIG. 3 is a schematic view of a sensor distribution on a metering disc according to the present invention;
fig. 4 is a partially enlarged view of the support post of fig. 1 according to the present invention.
Fig. 5 is a schematic top view of the present invention.
FIG. 6 is a schematic top view of the driving device of the present invention.
Fig. 7 is a partial enlarged view of the driving device of fig. 1 according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As can be seen from the attached drawings 1-7, the invention provides an error compensation electronic scale, which comprises a base 1, wherein a bearing plate 2 is arranged above the base 1 and used for bearing an object to be measured, a display screen is arranged on the bearing plate 2 and comprises two display areas, the first display area 21 is a final measured value, and the second display area 22 is used for detection and calibration; the base 1 is provided with a measuring disc 4 arranged at the lower part of the bearing plate 2, the measuring disc 4 is provided with a plurality of sensors 3 which are uniformly distributed on the circumference, the lower end of the bearing plate 2 is provided with a groove which has the same size with the measuring disc 4, the groove is internally provided with a plurality of pressing tables 5 which are uniformly distributed on the circumference, when the base does not work, the pressing tables 5 are contacted with the sensors 3 but do not generate pressure, the pressing tables 5 on the measuring disc 4 are designed, in the using process, only the parts of the pressing tables 5 can be contacted with the sensors 3 which need to be used, but the sensors 3 which are not in the working state are not contacted with the bearing plate 2, so that the influence caused by the repeated use is avoided, the base 1 is provided with a driving device 6 which is arranged at the lower part of the measuring disc 4, and the driving device 6 is connected with a driving; the base 1 is provided with a power supply assembly 8; the driving device 6 drives the metering disc 4 in a mechanical mode, and the accurate and effective rotation is achieved.
In order to realize the supporting effect on the bearing plate, a plurality of supporting columns 9 distributed circumferentially on the upper end surface of the base 1 are arranged at the edge part of the upper end surface of the base 1, and a first blind hole 10 is formed in the end surface of each supporting column 9; the lower end of the bearing plate 2 is provided with supporting rods 11 which are in one-to-one correspondence with the supporting columns 9, the outer parts of the supporting rods 11 are sleeved with first springs 12, one ends of the first springs 12 are connected to the bottom of the bearing plate 2, and the other ends of the first springs 12 are connected to the upper end faces of the supporting columns 9 and used for supporting the bearing plate 2; through the structure that adopts first spring 12 to bear the weight of during having designed initial condition to loading board 2, first spring 12 also can assist when realizing loading board 2 not bearing, the effect that the lower extreme of bracing piece 11 and the bottom of first blind hole 10 are contactless.
In order to realize the calibration effect of the electronic scale, a first electromagnet 13 is arranged at the bottom of each first blind hole 10, a first magnetic block 14 is arranged at the lower end of each supporting rod 11, and the first electromagnet 13 is electrified to drive the bearing plate 2 to press the sensor 3 by adsorbing the first electromagnet 13; when the pressure sensor is used specifically, the first electromagnet 13 controls input current through the control module, the current adopted by the first electromagnet 13 is constant and flowing, so that the effect of applying constant pre-pressure can be accurately controlled, the first electromagnet 13 adsorbs the first magnetic block 14 to drive the bearing plate 2 to be pressed on the sensor 3 at constant pressure, and the accuracy of the sensor 3 used at the moment is vertically judged through the display of the second display area 22 on the display screen; because the pressure that first electro-magnet applyed is invariable, so the vertical that second display area 22 shows is the definite value also, when the numerical value is inconsistent, can judge that the sensor precision is had a problem this moment, can drive metering disc 4 through drive arrangement 6 this moment and carry out the switching of work sensor, guarantee good precision.
In order to realize the convenient switching use of the sensors, the number of the pressure applying tables 5 is 1/3 of the number of the sensors 3; the driving device 6 is a stepping motor, the base 1 is provided with a control module, the control module can control the rotation of the stepping motor, and the angle of each rotation of the stepping motor is 120 degrees; through the structural design, the stepping motor can switch one group of sensors once, and three groups of sensors 3 which can be used for switching are designed in the invention.
In order to better realize the driving of the driving device 6 to the metering disc 4, the upper end of the driving shaft 7 is provided with a plurality of second blind holes 15 which are uniformly distributed circumferentially, the lower end of the metering disc 4 is provided with a plurality of telescopic rods 16 which are in one-to-one correspondence with the second blind holes 15, the bottom of each second blind hole 15 is provided with a second electromagnet 17, the end head of each telescopic rod 16 is provided with a second magnetic block 18, each telescopic rod 16 is installed in a mounting hole at the lower end of the metering disc 4, a second spring 19 is connected between each telescopic rod 16 and the bottom surface of each mounting hole, and each telescopic rod 16 does not extend out of each mounting hole under the action of the second spring 19; because the second electromagnet 17 cannot be electrified to drive the metering disc 4 to rotate through the driving device 6, a clamping structure needs to be designed to realize a stable rotating structure, and the structure that the telescopic rod 16 is matched with the second blind hole 15 is adopted in the invention; the invention also realizes the convenience of the rotation of the measuring disc 4 by designing the ball 20 between the measuring disc 4 and the base 1.
According to the invention, by designing a sensor switching structure adopting mechanical transmission, constant pressure is applied in advance by adopting a first electromagnet to detect the performance of the sensor, when a detection result shows deviation, the measuring disc is controlled to rotate at the moment, so that the bearing plate is used for measuring corresponding to different sensors, in the rotating process, the driving device is effectively rotated after being fixed on the measuring disc through the ball and the second electromagnet, a sensor group capable of accurately measuring is determined to be used, the alternative use of a plurality of sensors can be ensured through switching, the fatigue caused by frequent use is reduced, and for accurate measurement, the switching can be controlled to realize repeated measurement of a plurality of different sensor groups, so that the most accurate measurement result is achieved; in the use process, the control module is adopted to control the sequential actions of all the parts, so that the effects of compact structure and accurate control can be achieved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. An error compensation electronic scale is characterized by comprising a base (1), wherein a bearing plate (2) is arranged above the base (1), a metering disc (4) arranged at the lower part of the bearing plate (2) is arranged on the base (1), a plurality of sensors (3) which are uniformly distributed on the circumference are arranged on the metering disc (4), a groove which is the same as the metering disc (4) in size is arranged at the lower end of the bearing plate (2), a plurality of pressing tables (5) which are uniformly distributed on the circumference are arranged in the groove, when the electronic scale does not work, the pressing tables (5) are in contact with the sensors (3) but do not generate pressure, a driving device (6) which is positioned at the lower part of the metering disc (4) is arranged on the base (1), and a driving shaft (7) which can be used for driving the metering disc (4) is connected onto the driving device (6); and a power supply assembly (8) is arranged on the base (1).
2. An error compensation electronic scale according to claim 1, characterized in that the edge of the upper end surface of the base (1) is provided with a plurality of support columns (9) circumferentially distributed on the upper end surface of the base (1), and the end surface of each support column (9) is provided with a first blind hole (10).
3. An error compensation electronic scale according to claim 2, wherein the lower end of the loading plate (2) is provided with support rods (11) corresponding to the support columns (9) one by one, a first spring (12) with one end connected to the bottom of the loading plate (2) is sleeved outside the support rods (11), and the other end of the first spring (12) is connected to the upper end face of the support columns (9) and used for supporting the loading plate (2).
4. An error-compensating electronic scale according to claim 3, characterized in that the lower end of the support rod (11) is inserted into the first blind hole (10) of the support column (9), and when the load-bearing plate (2) is not loaded, the lower end of the support rod (11) is not in contact with the bottom of the first blind hole (10).
5. An error compensation electronic scale according to claim 4, characterized in that a first electromagnet (13) is arranged at the bottom of each first blind hole (10), a first magnetic block (14) is arranged at the lower end of each support rod (11), and the first electromagnet (13) can be electrified to drive the bearing plate (2) to press the sensor (3) by adsorbing the first electromagnet (13).
6. An error-compensating electronic scale according to claim 6, characterised in that the number of pressure application stations (5) is 1/3 times the number of sensors (3).
7. An error compensated electronic scale according to claim 1, characterized in that the driving means (6) is a stepping motor, and the base (1) is provided with a control module for controlling the rotation of the stepping motor, wherein the stepping motor rotates by an angle of 120 ° each time.
8. The error compensation electronic scale as recited in claim 1, wherein a plurality of second blind holes (15) are circumferentially and uniformly distributed at the upper end of the driving shaft (7), a plurality of telescopic rods (16) corresponding to the second blind holes (15) in a one-to-one manner are arranged at the lower end of the metering disc (4), a second electromagnet (17) is arranged at the bottom of each second blind hole (15), a second magnetic block (18) is arranged at the end of each telescopic rod (16), each telescopic rod (16) is installed in a mounting hole at the lower end of the metering disc (4), a second spring (19) is connected between each telescopic rod (16) and the bottom surface of the mounting hole, and each telescopic rod (16) does not extend out of the mounting hole under the action of the second spring (18).
9. An error-compensating electronic scale according to claim 1, characterized in that balls (20) are provided between the measuring disc (4) and the base (1).
10. Error-compensated electronic scale according to one of claims 1-9, characterized in that the power supply unit (8) is a rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055762.3A CN112146741B (en) | 2020-09-30 | 2020-09-30 | Error compensation electronic scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055762.3A CN112146741B (en) | 2020-09-30 | 2020-09-30 | Error compensation electronic scale |
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| Publication Number | Publication Date |
|---|---|
| CN112146741A true CN112146741A (en) | 2020-12-29 |
| CN112146741B CN112146741B (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011055762.3A Active CN112146741B (en) | 2020-09-30 | 2020-09-30 | Error compensation electronic scale |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130098136A1 (en) * | 2010-06-30 | 2013-04-25 | Fujian Metrology Institute | Method for calibrating large fixed electronic scale |
| CN105865608A (en) * | 2016-06-13 | 2016-08-17 | 陕西理工学院 | Full-automatic quadrangle calibration system for weighing sensors |
| CN106525332A (en) * | 2016-12-15 | 2017-03-22 | 上海市共进通信技术有限公司 | Calibration method of flexible pressure sensor |
| CN108827534A (en) * | 2018-09-05 | 2018-11-16 | 广西玉柴机器股份有限公司 | A kind of scene auxiliary strength sensor calibrating installation |
-
2020
- 2020-09-30 CN CN202011055762.3A patent/CN112146741B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130098136A1 (en) * | 2010-06-30 | 2013-04-25 | Fujian Metrology Institute | Method for calibrating large fixed electronic scale |
| CN105865608A (en) * | 2016-06-13 | 2016-08-17 | 陕西理工学院 | Full-automatic quadrangle calibration system for weighing sensors |
| CN106525332A (en) * | 2016-12-15 | 2017-03-22 | 上海市共进通信技术有限公司 | Calibration method of flexible pressure sensor |
| CN108827534A (en) * | 2018-09-05 | 2018-11-16 | 广西玉柴机器股份有限公司 | A kind of scene auxiliary strength sensor calibrating installation |
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| Publication number | Publication date |
|---|---|
| CN112146741B (en) | 2021-11-02 |
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Effective date of registration: 20220608 Address after: 450000 No. 32, building 18, No. 30, Nongye East Road, Jinshui District, Zhengzhou City, Henan Province Patentee after: Niu Deqin Patentee after: Nian Miao Patentee after: Duan Wenhai Address before: 450000 n, 15th floor, building 16, 39 Zhengbian Road, Guancheng Hui District, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU XINYIDE ELECTROMECHANICAL EQUIPMENT CO.,LTD. |
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Effective date of registration: 20220908 Address after: 450000 No. n, 15 / F, building 16, No. 39, Zhengbian Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: ZHENGZHOU XINYIDE ELECTROMECHANICAL EQUIPMENT CO.,LTD. Address before: 450000 No. 32, building 18, No. 30, Nongye East Road, Jinshui District, Zhengzhou City, Henan Province Patentee before: Niu Deqin Patentee before: Nian Miao Patentee before: Duan Wenhai |
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