CN219935095U - Low type weighing module with quick calibration module - Google Patents
Low type weighing module with quick calibration module Download PDFInfo
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- CN219935095U CN219935095U CN202320737849.1U CN202320737849U CN219935095U CN 219935095 U CN219935095 U CN 219935095U CN 202320737849 U CN202320737849 U CN 202320737849U CN 219935095 U CN219935095 U CN 219935095U
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- 238000005303 weighing Methods 0.000 title claims abstract description 41
- 238000009434 installation Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model relates to a low profile weighing module with a fast calibration module, comprising: the bottom plate is provided with a mounting position; a force sensor installed at the center of the base plate, the force sensor being used for converting a change in received force into a change in electrical signal; the amplifier component is arranged on the bottom plate and positioned at one side of the force sensor and is used for amplifying the electric signal; a button assembly; a main control board; an upper supporting table board fixed on the force sensor and used for supporting the weight to be measured; and a cover plate. The beneficial effects of the utility model are as follows: the button module is arranged on the whole side face of the weighing module, is located below the cover plate, is favorable for controlling the thickness of the weighing module, and plays a certain role in protection. Compared with the prior art, the adjustable potentiometer is removed, the design of MCU and four buttons is changed into the design of logic control, the operability of the low weighing module is improved, and the functions of quick zero marking and quick full scale marking can be realized.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to a low-profile weighing module with a rapid calibration module.
Background
With the continuous development of industrial automation systems, the role played by weighing modules is becoming more and more important, and the application field is also becoming more and more extensive. The weighing module can be used in various fields such as force measurement, engineering machinery, factory automation, medical equipment, the Internet of things and the like.
Especially in the factory automation field, in order to detect the gas quantity in the control gas cylinder, and adopted weighing module and rear end PLC to be connected, play real-time control's effect, and the present installation uses the altitude mixture space relatively narrow and small, and current weighing module marks the debugging difficulty, needs the module round trip adjustment with adjustable resistance, has to use inconvenient, adjusts not swift scheduling problem. The existing weighing module is adjusted by adopting an adjustable potentiometer, the change of the output signal is larger when the weighing module rotates by a small angle, the fine adjustment function cannot be realized, and the weighing module can be adjusted to an ideal output signal by repeated adjustment for many times. The full scale output signal is affected when the zero potentiometer is adjusted, and vice versa, the zero output signal is also affected when the full scale potentiometer is adjusted. For easy adjustment, the adjustable potentiometer is exposed on the surface of the product, so that a high protection level cannot be achieved.
Disclosure of Invention
The utility model aims to solve the technical problems that: the low weighing module with the rapid calibration module is provided for solving the problems that the key design of the low weighing module in the prior art is unfavorable for rapid zero point calibration and full scale operation and is unfavorable for key protection.
The technical scheme adopted for solving the technical problems is as follows:
a low profile weighing module with a fast calibration module, comprising:
the bottom plate is provided with an installation position;
a force sensor installed at the center of the base plate, the force sensor being used to convert a change in a received force into a change in an electrical signal;
the amplifier component comprises a main control board, is arranged on the bottom plate and is positioned at one side of the force sensor and used for amplifying electric signals;
a button assembly mounted at an edge on the base plate, the button assembly including a first button, a second button, a third button, a fourth button;
the main control board is connected with the outputs of the first button, the second button, the third button and the fourth button;
an upper supporting table board fixed on the force sensor and used for supporting the weight to be measured;
the cover plate is covered on the upper supporting table top; one side of the cover plate is provided with a slot for exposing the first button, the second button, the third button and the fourth button on one side of the button assembly;
the first button, the second button, the third button and the fourth button are internally provided with normally open contacts, and the normally open contacts can be in a conducting state with the ground after being closed.
Preferably, the low profile weighing module with a fast calibration module of the present utility model, the amplifier assembly comprises:
a main control board;
the resistor component is connected with the main control board;
and the protection box is covered on the main control board and the resistor component.
Preferably, the low-profile weighing module with the rapid calibration module is rectangular, the upper surface and the lower surface of the middle position are concave, a certain height difference exists between the lower surfaces of the two sides of the force sensor, and the lower surface of the first side is higher than the lower surface of the second side.
Preferably, the low-profile weighing module with the rapid calibration module of the utility model is provided with an opening on the upper support table surface aligned with the first side position of the force sensor.
Preferably, the low profile weighing module with the rapid calibration module of the present utility model, the upper support deck is secured to the second side of the force sensor by screws.
Preferably, the low-profile weighing module with the rapid calibration module is characterized in that overload protection bolts are arranged on the bottom plate and uniformly distributed around the force sensor. The overload protection bolts uniformly distributed around the force sensor can play a role in sharing the force applied to the force sensor, so that the force sensor is not influenced by the load exceeding the force sensor, and the force sensor is effectively protected.
The beneficial effects of the utility model are as follows:
the button module is arranged on the whole side face of the weighing module, is located below the cover plate, is favorable for controlling the thickness of the weighing module, and plays a certain role in protection. Compared with the prior art, the adjustable potentiometer is removed, the logic control design of four I/O ports on the MCU and four buttons is changed, the operability of the low weighing module is improved, and the functions of quick zero marking and quick full scale marking can be realized. Overload protection bolts are uniformly distributed around the force sensor, so that the force sensor is effectively protected from being damaged by overweight load.
Drawings
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
FIG. 1 is a schematic diagram of an exploded view of a low profile weighing module with a fast calibration module according to an embodiment of the present utility model;
FIG. 2 is a perspective view of a low profile weighing module with a quick calibration module according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of electrical signal transmission relationships of a low profile weighing module with a fast calibration module according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of the shape of a force sensor of an embodiment of the present utility model;
fig. 5 is a schematic diagram showing connection between an I/O port of an MCU and a button assembly on a main control board according to an embodiment of the present utility model.
The reference numerals in the figures are:
1. bottom plate
2. Force sensor
3. Amplifier assembly
4. Button assembly
5. Upper supporting table top
6. Cover plate
7. Overload protection bolt
41. First button
42. Second button
43. Third button
44. And a fourth button.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case. In this embodiment, the directions X, Y, Z and X, Y, Z are all based on Cartesian coordinates.
The technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings in combination with embodiments.
Examples
This embodiment provides a low profile weighing module with a fast calibration module, as shown in fig. 1-5, comprising:
the base plate 1 is provided with an installation position;
a force sensor 2 mounted on the base plate 1, the force sensor 2 being adapted to convert a change in a received force into a change in an electrical signal;
the amplifier assembly 3 comprises a main control board, and the amplifier assembly 3 is arranged on the bottom plate 1 and positioned at one side of the force sensor 2 and used for amplifying electric signals;
a button assembly 4 mounted at an edge on the base plate 1, the button assembly 4 including a first button 41, a second button 42, a third button 43, a fourth button 44;
the main control board is connected with the electrical outputs of the first button 41, the second button 42, the third button 43 and the fourth button 44;
an upper supporting table top 5 fixed on the force sensor 2 and used for supporting a weight to be measured;
a cover plate 6 covering the upper support table 5; one side of the cover plate 6 is provided with a slot for exposing a first button 41, a second button 42, a third button 43 and a fourth button 44 on one side of the button assembly 4;
the first button 41, the second button 42, the third button 43 and the fourth button 44 are internally provided with normally open contacts, and the normally open contacts can be in a conducting state with the ground after being closed.
The low-profile weighing module with the quick calibration module of this embodiment, button assembly 4 switching principle is as follows: when the button is acted by external force, the opening and closing state of the contact is changed, the normally open contact under static state is closed, and the point is in a conducting state with the ground after the normally open contact is closed, otherwise, the point is in an opening state. The first button 41, the second button 42, the third button 43 and the fourth button 44 are connected with MCU input ports on the main control board one by one, the main control board can convert an input millivolt signal into a milliamp signal for output, and when a key switch is not pressed, the ports connected with the key switch are in a floating input state; when the key switch is pressed, the port connected with the key switch is in a pull-down input state, the logic is low at the moment, the singlechip judges that the switch is pressed after receiving a low-level signal, and then the function of quick calibration is realized according to the logic written by software (particularly, a program for adjusting zero and full-scale points is the existing software).
Description of realizing the rapid calibration function: the first button 41, the second button 42, the third button 43, and the fourth button 44 are labeled ZERO+, ZERO-, SPAN+, SPAN-, respectively.
1. Pressing the ZERO+ and ZERO-keys simultaneously, and outputting 4.000mA by the amplifier component with the current measured value as ZERO point; simultaneously pressing the SPAN+ and SPAN-keys, and outputting 20.000mA by the amplifier component with the current measured value as a full-scale range point; (the principle is that the main control board is triggered to enter different calibration modes through different key combinations, and after the main control board enters the calibration mode, the main control board assembly program records that the currently input mv signal is a zero point/full range point, so that corresponding current signals are output, and the calibration of the zero point and the full range point is realized
2. ZERO fine adjustment can be achieved by pressing the ZERO+ key/ZERO-key, with the output analog changing by 0.001mA per press; full scale point fine tuning can be achieved by pressing the SPAN + key/SPAN-key, with the output analog change of 0.001mA per press;
3. the simulation value under the current weight can be adjusted by simultaneously pressing the ZERO+ and SPAN-keys to enter an insertion correction point mode, and the function supports the insertion of four correction points at most;
4. simultaneously, four keys of ZERO+ZERO-SPAN+SPAN-are pressed down, and the factory setting can be restored.
Preferably, the low profile weighing module with the fast calibration module of this embodiment, the amplifier assembly 3 comprises:
a main control board;
the resistor component is connected with the main control board;
the protection box is covered on the main control board and the resistor assembly and plays a role in protecting the main control board.
Preferably, in the low-profile weighing module with a rapid calibration module of this embodiment, as shown in fig. 4, the force sensor 2 is in a cuboid shape, the upper surface and the lower surface of the middle position are both concave, a certain height difference is formed between the lower surfaces of the two sides of the force sensor 2, and the lower surface of the first side is higher than the lower surface of the second side. The structural design can eliminate the stress of the first side and avoid interference on the sensing.
Preferably, in the low profile weighing module with the rapid calibration module of this embodiment, as shown in fig. 1, an opening is provided on the upper support table 5 aligned with the first side of the force sensor 2. The structural design can eliminate the stress of the first side and avoid interference on the sensing.
Preferably, the low profile weighing module with the rapid calibration module of this embodiment, the upper support table 5 is fixed to the second side of the force sensor 2 by screws.
Preferably, in the low-profile weighing module with the rapid calibration module, the overload protection bolts 7 are arranged on the bottom plate 1, and the overload protection bolts 7 are uniformly distributed around the force sensor. At least 4 overload protection bolts 7 are distributed on four corners of the bottom plate 1, the gap between the overload protection bolts 7 and the upper supporting table top 5 is 0.3-2 mm, for example, when an oversized heavy object is pressed on the upper supporting table top 5, the upper supporting table top 5 deforms and contacts the overload protection bolts 7 first, and the overload protection bolts 7 split the force applied on the force sensor 2, so that the force sensor 2 is protected.
With the above-described preferred embodiments according to the present utility model as a teaching, the worker skilled in the art could make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.
Claims (6)
1. A low profile weighing module with a fast calibration module, comprising:
the device comprises a bottom plate (1), wherein an installation position is arranged on the bottom plate (1);
a force sensor (2) mounted on the base plate (1), the force sensor (2) being adapted to convert a change in a received force into a change in an electrical signal;
the amplifier assembly (3) comprises a main control board, and the amplifier assembly (3) is arranged on the bottom plate (1) and positioned at one side of the force sensor (2) and is used for amplifying electric signals;
a button assembly (4) mounted at an edge on the base plate (1), the button assembly (4) comprising a first button (41), a second button (42), a third button (43), a fourth button (44);
the main control board is electrically connected with the electrical outputs of the first button (41), the second button (42), the third button (43) and the fourth button (44);
an upper supporting table top (5) fixed on the force sensor (2) and used for supporting a weight to be detected;
a cover plate (6) covering the upper support table top (5); one side of the cover plate (6) is provided with a slot for exposing a first button (41), a second button (42), a third button (43) and a fourth button (44) on one side of the button assembly (4);
and normally open contacts are arranged in the first button (41), the second button (42), the third button (43) and the fourth button (44), and can be in a conducting state with the ground after being closed.
2. A low profile weighing module with a fast calibration module according to claim 1, characterized in that said amplifier assembly (3) comprises:
a main control board;
the resistor component is connected with the main control board;
and the protection box is covered on the main control board and the resistor component.
3. The low profile weighing module with rapid calibration module according to claim 2, wherein the force sensor (2) is in the shape of a cuboid with concave upper and lower surfaces in the middle, and the lower surfaces on both sides of the force sensor (2) have a certain height difference, the lower surface on the first side being higher than the lower surface on the second side.
4. A low profile weighing module with a fast calibration module according to claim 3, characterized in that an opening is provided in the upper support table (5) in alignment with the first side of the force sensor (2).
5. A low profile weighing module with a fast calibration module according to claim 4, characterized in that said upper support table top (5) is fixed to the second side of said force sensor (2) by means of screws.
6. The low profile weighing module with rapid calibration module according to claim 1, characterized in that the base plate (1) is provided with overload protection bolts (7), the overload protection bolts (7) being evenly distributed around the force sensor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320737849.1U CN219935095U (en) | 2023-04-06 | 2023-04-06 | Low type weighing module with quick calibration module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320737849.1U CN219935095U (en) | 2023-04-06 | 2023-04-06 | Low type weighing module with quick calibration module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219935095U true CN219935095U (en) | 2023-10-31 |
Family
ID=88492290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320737849.1U Active CN219935095U (en) | 2023-04-06 | 2023-04-06 | Low type weighing module with quick calibration module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219935095U (en) |
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2023
- 2023-04-06 CN CN202320737849.1U patent/CN219935095U/en active Active
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