CN116007732A - Self-calibration sensor and weighing device comprising same - Google Patents
Self-calibration sensor and weighing device comprising same Download PDFInfo
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- CN116007732A CN116007732A CN202111228083.6A CN202111228083A CN116007732A CN 116007732 A CN116007732 A CN 116007732A CN 202111228083 A CN202111228083 A CN 202111228083A CN 116007732 A CN116007732 A CN 116007732A
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- 238000010586 diagram Methods 0.000 description 4
- 239000008358 core component Substances 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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Abstract
The invention provides a self-calibration sensor and a weighing device comprising the same, wherein the self-calibration sensor comprises a self-calibration motor, a self-calibration weight and a self-calibration weight bracket, the self-calibration motor is arranged on a sensor bottom plate, one end part of the self-calibration weight bracket is fixed on the sensor bottom plate, the other end part of the self-calibration weight bracket is fixed on a sensor bearing part, and a force transmission part for amplifying force is arranged in the self-calibration weight bracket; the self-correcting weight is arranged on the self-correcting motor and spans over the self-correcting weight bracket, and the self-correcting motor drives the self-correcting weight to move downwards to be loaded on the self-correcting weight bracket or move upwards to be far away from the self-correcting weight bracket. According to the self-calibration weight, the force amplifying mechanism is added on the internal calibration mechanism, smaller self-calibration weights can be obtained through implementation of the self-calibration sensor, and the power, the size and the like of the corresponding self-calibration motor can be made small, so that the sensor is simple and compact in structure, and the size of the integral sensor is effectively reduced.
Description
Technical Field
The invention relates to the field of sensors, in particular to a self-calibration sensor and a weighing device comprising the same.
Background
Along with the change of environment and time, the weighing sensor on the electronic balance needs to be recalibrated to ensure the weighing accuracy, and most electronic balances are provided with an accurate weight for carrying out calibration and then weighing. If the accurate weight is not provided, the balance cannot be corrected, so that the electronic balance cannot be used, and the accurate weight needs to be stored separately, so that great inconvenience is brought to use.
Aiming at the problems, the prior solution is to add an internal calibration mechanism inside the electronic balance to perform automatic calibration, so that an external measuring weight is not required to be additionally arranged to perform calibration, thereby greatly facilitating the use of a terminal by a customer. For example, the internal calibration mechanism is installed inside the electronic balance. The structure occupies the internal space volume of the electronic balance, and in order to ensure the accuracy of calibration, the larger the weighing range is, the larger the corresponding mass of the required internal calibration weight of the weighing sensor is.
The self-calibration sensor is characterized in that the self-calibration mechanism is controlled by a program, so that the automatic calibration of the sensor can be realized without manual intervention. The core component of the self-calibration sensor consists of an internal calibration motor, an internal calibration weight and an internal calibration weight bracket. The larger the weighing range, the larger the corresponding mass of the self-calibrating weight required for the sensor.
In some large weighing sensor designs, the size requirements of the internal calibration weight cannot be too large due to size and space constraints. Under the condition, the weight and the size of the internal calibration weight are limited, so that the corresponding mass during the internal calibration can not meet the weighing performance requirement of the internal calibration of the weighing sensor.
In view of the foregoing, the inventors have devised a self-calibrating sensor and a weighing apparatus including the same, in order to overcome the above-mentioned problems.
Disclosure of Invention
The invention aims to overcome the defect that the corresponding quality of an internal calibration sensor in the prior art cannot meet the weighing performance requirement of the internal calibration of a weighing sensor, and provides a self-calibration sensor and a weighing device comprising the self-calibration sensor.
The invention solves the technical problems by the following technical proposal:
the self-calibration sensor is characterized by comprising a self-calibration motor, a self-calibration weight and a self-calibration weight bracket, wherein the self-calibration motor is arranged on a sensor bottom plate, one end part of the self-calibration weight bracket is fixed on the sensor bottom plate, the other end part of the self-calibration weight bracket is fixed on a sensor bearing part, and a force transmission part for amplifying force is arranged in the self-calibration weight bracket;
the self-correcting weight is arranged on the self-correcting motor and spans over the self-correcting weight bracket, and the self-correcting motor drives the self-correcting weight to move downwards to be loaded on the self-correcting weight bracket or move upwards to be far away from the self-correcting weight bracket.
According to one embodiment of the invention, the self-correcting weight bracket comprises a fixing part, a parallel guiding part, a force transmission part and a connecting part, wherein the fixing part is fixedly connected with the sensor bottom plate, one end of the parallel guiding part is connected with the fixing part, the other end of the parallel guiding part is hinged with one end part of the force transmission part, and the parallel guiding part is positioned between the self-correcting weight and the self-correcting motor;
the other end of the force transmission part is connected with the connecting part, and the connecting part is fixed on the sensor bearing part.
According to one embodiment of the invention, the force transmission part comprises a first-stage lever and a second-stage lever which are sequentially connected, wherein the first-stage lever is connected with the parallel guide part, and the second-stage lever is connected with the connecting part.
According to one embodiment of the invention, the first-stage lever comprises a first-stage connecting piece composed of a plurality of connecting rods, the connecting rods are sequentially connected through hinges, and one end of the first-stage lever is fixedly connected with the fixing part;
the second-stage lever comprises a second-stage connecting piece composed of a plurality of connecting rods, the connecting rods are sequentially connected through hinges, the other end of the first-stage lever is connected with the second-stage lever through hinges, one end of the second-stage lever is connected with the fixing part, and the other end of the second-stage lever is connected with the connecting part.
According to one embodiment of the present invention, the first-stage connecting member includes a first link, a second link, and a third link, one end of the first link is connected to the fixing portion through a hinge, the other end of the first link is connected to one end of the second link through a hinge, the other end of the second link is sequentially connected to one end of the third link, and the other end of the third link is connected to the second-stage connecting member.
According to one embodiment of the present invention, the second-stage connecting member includes a fourth link, a fifth link, and a sixth link, one end of the fourth link is connected to the fixing portion by a hinge, the other end of the fourth link is connected to one end of the fifth link by a hinge, the other end of the fifth link is connected to one end of the sixth link by a hinge, the other end of the sixth link is connected to the connecting portion, and the fifth link is connected to the third link by a hinge.
According to one embodiment of the invention, the first-stage connecting pieces located at two ends of the first-stage connecting pieces form a first included angle.
According to one embodiment of the invention, the second-stage connecting pieces located at two ends form a second included angle.
According to one embodiment of the invention, the force amplification factor of the force transfer portion is the self-correcting weight divided by the sine of the first angle and the sine of the second angle.
The invention also provides a weighing apparatus characterized in that it comprises a self-calibrating sensor as described above.
The invention has the positive progress effects that:
the self-calibration sensor and the weighing device comprising the self-calibration sensor are provided with the force amplifying mechanism on the internal calibration mechanism, so that the calibration of the wide-range sensor can be realized by using a small weight, and the problems are well solved.
The implementation of the self-calibration sensor can obtain smaller self-calibration weights, and the power, the size and the like of the corresponding self-calibration motor can be made small, so that the sensor has a simple and compact structure, and the size of the integral sensor is effectively reduced.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which like reference characters designate like features throughout the drawings, and in which:
FIG. 1 is a schematic diagram of a self-calibrating sensor according to the present invention.
FIG. 2 is a side view of a self-calibrating sensor of the present invention.
FIG. 3 is a schematic diagram of a self-calibrating weight holder in a self-calibrating sensor according to the present invention.
Fig. 4 is a schematic view of the installation of the force transfer portion of the self-calibrating weight holder in the self-calibrating sensor of the present invention.
Fig. 5 is a schematic structural view of a force transmitting portion of a self-calibrating weight holder in a self-calibrating sensor according to the present invention.
[ reference numerals ]
Self-correcting motor 10
Self-calibrating weight 20
Self-calibrating weight holder 30
Hinge 60
Fixing portion 32
First connecting rod 311
Second connecting rod 312
Third connecting rod 313
First included angle theta 1
Second included angle theta 2
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Furthermore, although terms used in the present invention are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.
Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
FIG. 1 is a schematic diagram of a self-calibrating sensor according to the present invention. FIG. 2 is a side view of a self-calibrating sensor of the present invention. FIG. 3 is a schematic diagram of a self-calibrating weight holder in a self-calibrating sensor according to the present invention. Fig. 4 is a schematic view of the installation of the force transfer portion of the self-calibrating weight holder in the self-calibrating sensor of the present invention. Fig. 5 is a schematic structural view of a force transmitting portion of a self-calibrating weight holder in a self-calibrating sensor according to the present invention.
As shown in fig. 1 to 5, the present invention discloses a self-calibration sensor, which includes a self-calibration motor 10, a self-calibration weight 20, and a self-calibration weight holder 30, wherein the self-calibration motor 10 is mounted on a sensor base plate 40, one end portion of the self-calibration weight holder 30 is fixed on the sensor base plate 40, the other end portion is fixed on a sensor carrying portion 50, and a force transmission portion 31 for amplifying force is provided in the self-calibration weight holder 30. The self-correcting weight 20 is mounted on the self-correcting motor 10 and spans over the self-correcting weight holder 30, and the self-correcting motor 10 drives the self-correcting weight 20 to move downwards to be loaded on the self-correcting weight holder 30 or to move upwards to be away from the self-correcting weight holder 30.
Preferably, the self-correcting weight holder 30 includes a fixing portion 32, a parallel guide portion 33 (simultaneously, a bearing portion when the weight is loaded), and a connecting portion 34, the fixing portion 32 is fixedly connected with the sensor base plate 40, one end of the parallel guide portion 33 is connected with the fixing portion 32, the other end is hinged with one end of the force transmitting portion 31, and the parallel guide portion 33 is located between the self-correcting weight 20 and the self-correcting motor 10. The other end of the force transmitting portion 31 is connected to the connecting portion 34, and the connecting portion 34 is fixed to the sensor carrier portion 50.
When the self-calibration weight 20 needs to be loaded, the self-calibration motor 10 drives the self-calibration weight 20 to be placed on the parallel guide part 32 of the self-calibration weight bracket 30, self-calibration loading action is carried out, and after self-calibration of the sensor is completed, the self-calibration motor 10 pushes the self-calibration weight 20 to leave the self-calibration weight bracket 30, so that the self-calibration flow of the whole sensor is completed. The self-correcting motor 10 is mainly used for pushing the self-correcting weight 20 to move up and down. The self-calibrating weight 20 is the core component of the self-calibrating mechanism for reassigning the weight of the self-calibrating sensor. The self-calibration weight bracket 30 is mainly used for supporting the self-calibration weight 20 in the self-calibration process, and the self-calibration weight bracket 30 is used for transmitting the weight of the self-calibration weight 20 to the sensor bearing part to carry out weight assignment on the sensor.
Particularly preferably, the force transmission part 31 comprises a first lever and a second lever connected in sequence, the first lever being connected to the parallel guide part 33, the second lever being connected to the connecting part 34. The first-stage lever comprises a first-stage connecting piece composed of a plurality of connecting rods, the connecting rods are sequentially connected through hinges, and one end of the first-stage lever is fixedly connected with the fixing part 32. The second-stage lever comprises a second-stage connecting piece composed of a plurality of connecting rods, the second-stage connecting pieces are sequentially connected through hinges, the other end of the first-stage lever is connected with the second-stage lever through hinges, one end of the second-stage lever is connected with the fixing part 32, and the other end of the second-stage lever is connected with the connecting part 34.
In this embodiment, preferably, the first-stage connecting member includes a first link 311, a second link 312, and a third link 313, one end of the first link 311 is connected to the fixed portion 32 through the hinge 60, the other end of the first link 311 is connected to one end of the second link 312 through the hinge 60, the other end of the second link 312 is sequentially connected to one end of the third link 313, and the other end of the third link 313 is connected to the second-stage connecting member, thereby forming the first-stage lever.
The second-stage connecting member includes a fourth link 314, a fifth link 315 and a sixth link 316, one end of the fourth link 314 is connected to the fixed portion 32 through a hinge 60, the other end of the fourth link 314 is connected to one end of the fifth link 315 through the hinge 60, the other end of the fifth link 315 is connected to one end of the sixth link 316 through the hinge 60, and the other end of the sixth link 316 is connected to the connecting portion 34, thereby forming the second-stage lever. The fifth link 315 is connected to the third link 313 through the hinge 60 such that the second stage lever is interconnected with the first stage lever.
It should be noted that the number of the connecting rods included in the first-stage connecting piece and the connecting rod data included in the second-stage connecting piece are only examples, and the number of the connecting rods is not limited, and can be adjusted according to the actual lever ratio, which are all within the protection scope of the present application.
In addition, a first included angle theta 1 is formed between the first-stage connecting pieces located at two ends of the first-stage connecting pieces. For example, in the present embodiment, the angle θ1 between the first link 311 and the third link 313 may be adjusted according to the desired leverage ratio.
Similarly, a second included angle theta 2 is formed between the second-stage connecting pieces located at two ends of the second-stage connecting pieces. For example, in the present embodiment, the angle θ2 between the fourth link 314 and the sixth link 316 can be adjusted according to the desired leverage ratio.
The force amplification factor of the force transmission part 31 is the weight of the self-correcting weight 20 divided by the sine value of the first included angle θ1 and the sine value of the second included angle θ2.
The invention also provides a weighing apparatus characterized in that it comprises a self-calibrating sensor as described above.
According to the above-described construction, the self-calibration sensor of the present invention operates on the principle that when the sensor starts to perform the self-calibration operation, the self-calibration motor 10 moves downward, the self-calibration weight 20 is placed on the self-calibration weight holder 30, the weight falls to the bearing portion of the self-calibration weight holder 30, and the parallel guide portion 33 ensures the movement of the second link 312 in the vertical direction. Simultaneously pulling the third link 313 moves, transmitting force to the fifth link 315, and then pulling the sixth link 316 downward through the hinge 60. Since the sixth link 316 is connected to the sensor carrier 50 by the hinge 60, the transmission of force from the weight to the sensor is completed.
In this embodiment, the magnification of the self-calibration sensor is the sine value of the weight G divided by the angle between the third link 313 and the first link 311, and divided by the sine value of the angle between the fourth link 314 and the sixth link 316. As shown in fig. 5, the magnification factor n=1/(tgθ1×tgθ2), and a specific angle is shown in the figure. Through the amplification effect of the self-correcting weight bracket 30, the amplified weight (N times of the original self-correcting weight and N being the amplification ratio of the self-correcting weight bracket) is obtained on the sixth connecting rod 316 of the self-correcting weight bracket 30, one end of the sixth connecting rod 316 is connected with the stress end of the sensor, so that the force on the sixth connecting rod 316 is transmitted to the sensor, the sensor senses the force which is N times greater than the original self-correcting weight (accords with the weight requirement of the self-correcting sensor), and the assignment of the sensor is completed. After the assignment is completed, the self-correcting motor 10 moves upwards to push the self-correcting weight 20 upwards to separate from the self-correcting weight bracket 30, so that the whole assignment operation flow is completed.
The self-calibration sensor and the weighing device comprising the same have the following advantages:
1. in a limited size range, a large self-correcting weight;
2. the self-calibration sensor design which can conveniently solve the requirements of wide range and small size can be realized by adopting the structure of the invention;
3. the size of the integral sensor is effectively reduced due to simplicity and compactness.
In summary, the self-calibration sensor and the weighing device comprising the self-calibration sensor are provided with the force amplifying mechanism on the internal calibration mechanism, so that the calibration of the wide-range sensor can be realized by using a small weight, and the problems are well solved.
The implementation of the self-calibration sensor can obtain smaller self-calibration weights, and the power, the size and the like of the corresponding self-calibration motor can be made small, so that the sensor has a simple and compact structure, and the size of the integral sensor is effectively reduced.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. The self-calibration sensor is characterized by comprising a self-calibration motor, a self-calibration weight and a self-calibration weight bracket, wherein the self-calibration motor is arranged on a sensor bottom plate, one end part of the self-calibration weight bracket is fixed on the sensor bottom plate, the other end part of the self-calibration weight bracket is fixed on a sensor bearing part, and a force transmission part for amplifying force is arranged in the self-calibration weight bracket;
the self-correcting weight is arranged on the self-correcting motor and spans over the self-correcting weight bracket, and the self-correcting motor drives the self-correcting weight to move downwards to be loaded on the self-correcting weight bracket or move upwards to be far away from the self-correcting weight bracket.
2. The self-calibrating sensor of claim 1, wherein the self-calibrating weight holder comprises a fixed portion, a parallel guide portion and a connecting portion, the fixed portion is fixedly connected with the sensor base plate, one end of the parallel guide portion is connected with the fixed portion, the other end is hinged with one end of the force transmission portion, and the parallel guide portion is positioned between the self-calibrating weight and the self-calibrating motor;
the other end of the force transmission part is connected with the connecting part, and the connecting part is fixed on the sensor bearing part.
3. The self-calibrating sensor of claim 2, wherein the force transfer portion comprises a first stage lever and a second stage lever connected in sequence, the first stage lever being connected to the parallel guide portion, the second stage lever being connected to the connecting portion.
4. The self-calibrating sensor according to claim 3, wherein the first-stage lever comprises a first-stage connecting piece composed of a plurality of connecting rods, the connecting rods are connected sequentially through hinges, and one end of the first-stage lever is fixedly connected with the fixing part;
the second-stage lever comprises a second-stage connecting piece composed of a plurality of connecting rods, the connecting rods are sequentially connected through hinges, the other end of the first-stage lever is connected with the second-stage lever through hinges, one end of the second-stage lever is connected with the fixing part, and the other end of the second-stage lever is connected with the connecting part.
5. The self-calibrating sensor of claim 4, wherein the first-stage connector comprises a first link, a second link, and a third link, one end of the first link is connected to the fixed portion by a hinge, the other end of the first link is connected to one end of the second link by a hinge, the other end of the second link is sequentially connected to one end of the third link, and the other end of the third link is connected to the second-stage connector.
6. The self-calibrating sensor of claim 5, wherein the second-stage connector comprises a fourth link, a fifth link, and a sixth link, one end of the fourth link is connected to the fixed portion by a hinge, the other end of the fourth link is connected to one end of the fifth link by a hinge, the other end of the fifth link is connected to one end of the sixth link by a hinge, the other end of the sixth link is connected to the connecting portion, and the fifth link is connected to the third link by a hinge.
7. The self-calibrating sensor according to claim 4 or 6, wherein a first included angle is formed between the first stage connections at both ends of the first stage connections.
8. The self-calibrating sensor of claim 7, wherein the second-stage connectors at opposite ends are at a second included angle.
9. The self-calibrating sensor of claim 8, wherein the force amplification factor of the force transfer portion is the self-calibrating weight divided by the sine of the first included angle and the sine of the second included angle.
10. A weighing apparatus comprising a self-calibrating sensor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228083.6A CN116007732A (en) | 2021-10-21 | 2021-10-21 | Self-calibration sensor and weighing device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228083.6A CN116007732A (en) | 2021-10-21 | 2021-10-21 | Self-calibration sensor and weighing device comprising same |
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| CN116007732A true CN116007732A (en) | 2023-04-25 |
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| CN202111228083.6A Pending CN116007732A (en) | 2021-10-21 | 2021-10-21 | Self-calibration sensor and weighing device comprising same |
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| DE19540782C1 (en) * | 1995-11-02 | 1996-12-19 | Sartorius Gmbh | Overhead pan electronic balance with two conversion levers and electromagnetic force compensation |
| CN1274836A (en) * | 1999-05-20 | 2000-11-29 | 扎托里乌斯股份公司 | Weighing body |
| DE10024017A1 (en) * | 1999-05-20 | 2001-07-19 | Sartorius Gmbh | Weighing transducer with several transmission levers has at least one additional lever supporting calibration weight as monolithic part of block from which essential parts are machined |
| CH694706A5 (en) * | 1998-02-05 | 2005-06-15 | Sartorius Gmbh | Upper pan electronic weighing machine with two crank levers. |
| CN101501463A (en) * | 2006-08-29 | 2009-08-05 | 株式会社岛津制作所 | Electronic balance |
| CN102879073A (en) * | 2012-10-18 | 2013-01-16 | 台衡精密测控(昆山)股份有限公司 | Electronic balance with internal calibrating weight structure |
| CN113124984A (en) * | 2019-12-31 | 2021-07-16 | 梅特勒-托利多仪器（上海）有限公司 | Weighing sensor and inner calibration structure thereof |
-
2021
- 2021-10-21 CN CN202111228083.6A patent/CN116007732A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19540782C1 (en) * | 1995-11-02 | 1996-12-19 | Sartorius Gmbh | Overhead pan electronic balance with two conversion levers and electromagnetic force compensation |
| CH694706A5 (en) * | 1998-02-05 | 2005-06-15 | Sartorius Gmbh | Upper pan electronic weighing machine with two crank levers. |
| CN1274836A (en) * | 1999-05-20 | 2000-11-29 | 扎托里乌斯股份公司 | Weighing body |
| DE10024017A1 (en) * | 1999-05-20 | 2001-07-19 | Sartorius Gmbh | Weighing transducer with several transmission levers has at least one additional lever supporting calibration weight as monolithic part of block from which essential parts are machined |
| CN101501463A (en) * | 2006-08-29 | 2009-08-05 | 株式会社岛津制作所 | Electronic balance |
| CN102879073A (en) * | 2012-10-18 | 2013-01-16 | 台衡精密测控(昆山)股份有限公司 | Electronic balance with internal calibrating weight structure |
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