CN114112153A - Automatic compensation digital tension sensor - Google Patents
Automatic compensation digital tension sensor Download PDFInfo
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- CN114112153A CN114112153A CN202111583521.0A CN202111583521A CN114112153A CN 114112153 A CN114112153 A CN 114112153A CN 202111583521 A CN202111583521 A CN 202111583521A CN 114112153 A CN114112153 A CN 114112153A
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- grid
- fixed grid
- elastic body
- base
- circuit board
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an automatic compensation digital tension sensor, and particularly relates to the technical field of tension sensors, which comprises a base, a mechanical assembly, a digital display assembly and a sensing assembly, wherein the mechanical assembly, the digital display assembly and the sensing assembly are arranged on the upper end surface of the base; the digital display assembly comprises a circuit board and a capacitor plate group, the circuit board is mounted on the upper end face of the base and is connected with the capacitor plate group in parallel through a lead, and the input end of the circuit board is electrically connected with the output ends of the first fixed grid, the second fixed grid and the movable grid through leads. The invention has two groups of capacitance or inductance sensitive devices of a movable grid and a first fixed grid, and the movable grid and a second fixed grid, wherein one group is used for sensing the change of tension, the other group is used for indicating the drift of environmental parameters, and the invention realizes the self-adaptive compensation of the environmental parameters by combining a specific algorithm, thereby further improving the precision and the stability.
Description
Technical Field
The invention relates to the technical field of tension sensors, in particular to an automatic compensation digital tension sensor.
Background
The tension sensor is an instrument for measuring the tension value of the coiled material in the tension control process. According to its working principle, it can be divided into strain gauge type and micro-displacement type. The strain gauge type is that a tension strain gauge and a compression strain gauge are connected together in a bridge mode, the resistance value of the strain gauge is changed when external pressure is applied, and the change value is in direct proportion to the magnitude of the applied tension; the micro-displacement type is a type in which a load is applied by an external force to displace a plate spring, and then a tension is detected by a differential transformer, and is called a micro-displacement type tension detector because the displacement amount of the plate spring is extremely small, about ± 200 μm. In addition, the external structure is divided into: pivot type, through-pivot type, cantilevered type, etc.
The yarn tension sensor mostly adopts the principle of surface acoustic wave or resistance strain. Sensors based on the resistance bridge strain gauge principle have various problems such as creep over time, when the strain gauge is attached to an elastic body. But the sensor based on the surface acoustic wave principle is to bond the essence element on the elastic body by glue, and the crack is easily generated due to factors such as vibration and the like in the use process after the product is formed, so that the sensor fails.
Disclosure of Invention
To overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide an automatic compensation digital tension sensor, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an automatic compensation digital tension sensor comprises a base, a mechanical assembly, a digital display assembly and a sensing assembly, wherein the mechanical assembly, the digital display assembly and the sensing assembly are arranged on the upper end surface of the base, the mechanical assembly and the digital display assembly are connected through the sensing assembly, the mechanical assembly comprises a support arranged on the upper end surface of the base, a second elastic body is arranged on the upper end surface of the support, the upper end of the second elastic body is connected with one end of a pressure rod, and a first elastic body is arranged below the other end of the pressure rod;
the sensing assembly comprises a first fixed grid and a second fixed grid which are arranged on the upper end surface of the base, a movable grid is arranged between the first fixed grid and the second fixed grid, and the top end of the movable grid is connected with the lower end of the first elastic body;
the digital display assembly comprises a circuit board and a capacitor plate group, the circuit board is mounted on the upper end face of the base and is connected with the capacitor plate group in parallel through a lead, and the input end of the circuit board is electrically connected with the output ends of the first fixed grid, the second fixed grid and the movable grid through leads.
In a preferred embodiment, the circuit board is provided with an oscillation circuit and an MCU, the output end of the oscillation circuit is electrically connected with the input end of the MCU, and the oscillation circuit is connected in parallel with the capacitor plate group through a wire.
In a preferred embodiment, the MCU internal program has a linearization algorithm.
In a preferred embodiment, the movable grid is arranged between the first fixed grid and the second fixed grid, and the distance between the movable grid and the first fixed grid is equal to that between the movable grid and the second fixed grid.
In a preferred embodiment, the first elastic body and the second elastic body are made of metal or ceramic.
Compared with the prior art, the invention has the technical effects and advantages that:
1. the device is provided with two groups of capacitance or inductance sensitive devices of a movable grid and a first fixed grid, and a movable grid and a second fixed grid, wherein one group is used for sensing the change of tension, the other group is used for indicating the drift of environmental parameters, and the device can realize self-adaptive compensation of the environmental parameters by combining a specific algorithm, thereby further improving the precision and the stability;
2. the sensor is provided with a mechanical component which converts the tension of the silk thread into pressure and converts the pressure into physical deformation, the deformation of the mechanical component can cause the change of inductance or capacitance in the sensor, the change of the inductance or the capacitance is converted into the change of oscillation frequency through an oscillation circuit, and the change is digitally calculated for the MCU, so that the change of the tension is obtained; the linear algorithm of the MCU internal program can compensate temperature drift and change, which is convenient for realizing higher precision.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic circuit structure of the present invention.
The reference signs are: 1. moving the grid; 2. a first fixed grid; 3. a wire; 4. a circuit board; 41. an oscillation circuit; 42. MCU; 5. a base; 6. a capacitor plate group; 7. a pressure lever; 8. a first elastic body; 9. a second fixed grid; 10. a second elastomer; 11. and (4) a bracket.
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.
The automatic compensation digital tension sensor comprises a base 5, a mechanical assembly, a digital display assembly and a sensing assembly, wherein the mechanical assembly, the digital display assembly and the sensing assembly are arranged on the upper end surface of the base 5 and are connected through the sensing assembly, the mechanical assembly comprises a support 11 arranged on the upper end surface of the base 5, a second elastic body 10 is arranged on the upper end surface of the support 11, the upper end of the second elastic body 10 is connected with one end of a pressure lever 7, and a first elastic body 8 is arranged below the other end of the pressure lever 7;
the sensing assembly comprises a first fixed grid 2 and a second fixed grid 9 which are arranged on the upper end surface of the base 5, a movable grid 1 is arranged between the first fixed grid 2 and the second fixed grid 9, and the top end of the movable grid 1 is connected with the lower end of the first elastic body 8;
the digital display assembly comprises a circuit board 4 and a capacitor plate group 6 which are arranged on the upper end surface of a base 5, the circuit board 4 is connected with the capacitor plate group 6 in parallel through a lead 3, and the input end of the circuit board 4 is electrically connected with the output ends of a first fixed grid 2, a second fixed grid 9 and a movable grid 1 through leads 3 respectively.
In a preferred embodiment, the circuit board 4 is mounted with an oscillating circuit 41 and an MCU42, an output end of the oscillating circuit 41 is electrically connected with an input end of the MCU42, the oscillating circuit 41 is connected in parallel with the capacitor plate group 6 through the lead 3, the oscillating circuit 41 converts the change of inductance or capacitance into the change of oscillation frequency, and the change is digitally calculated for the MCU42 to obtain the change of tension, so that the capacitor plate group 6 can adaptively compensate environmental parameters, and further improve accuracy and stability.
In a preferred embodiment, the MCU42 has an internal program with a linearization algorithm to facilitate higher accuracy.
In a preferred embodiment, the moving grid 1 is arranged between the first fixed grid 2 and the second fixed grid 9, the distance between the moving grid 1 and the first fixed grid 2 and the distance between the moving grid 1 and the second fixed grid 9 are equal, the moving grid 1 and the first fixed grid 2, the moving grid 1 and the second fixed grid 9 form two groups of sensitive devices of capacitance or inductance, one group is used for sensing the change of tension, the other group is used for indicating the drift of environmental parameters, and by combining with a specific algorithm, the environment parameters can be compensated in a self-adaptive manner, so that the precision and the stability are further improved.
In a preferred embodiment, the first elastic body 8 and the second elastic body 10 are made of metal or ceramic.
In summary, the present invention provides an automatic compensation digital tension sensor, when in use, a tension sensor is extruded by a tension of a thread, a pressure rod 7 is driven by the pressure rod 7 to move downwards, the pressure rod 7 extrudes a first elastic body 8, the first elastic body 8 drives a movable grid 1 to move downwards, the movable grid 1 is arranged between a first fixed grid 2 and a second fixed grid 9, the movable grid 1, the first fixed grid 2, the movable grid 1 and the second fixed grid 9 form two sets of capacitance or inductance sensitive devices, the movable grid 1 moves downwards to cause changes in capacitance or inductance between the movable grid 1 and the first fixed grid 2, the movable grid 1 and the second fixed grid 9, one set of capacitance or inductance sensitive devices transmits the changes in capacitance or inductance to an oscillating circuit 41, the changes in inductance or capacitance are converted into changes in oscillating frequency by the oscillating circuit 41, the changes in inductance or capacitance are digitally calculated by an MCU42, and a linearization algorithm is provided in an internal program of the MCU42, therefore, tension change is obtained, the precision is high, the capacitor plate group 6 is connected with the oscillating circuit 41 in parallel, the power factor of the system is improved, the degree that the current lags behind the voltage is reduced, the self-adaptive compensation of environmental parameters can be realized, and the precision and the stability are further improved.
Has the advantages that: the device is provided with two groups of capacitance or inductance sensitive devices of a movable grid and a first fixed grid, and a movable grid and a second fixed grid, wherein one group is used for sensing the change of tension, the other group is used for indicating the drift of environmental parameters, and the device can realize self-adaptive compensation of the environmental parameters by combining a specific algorithm, thereby further improving the precision and the stability; the mechanical component is used for converting the tension of the silk thread into pressure and converting the pressure into physical deformation, the deformation of the mechanical component can cause the change of inductance or capacitance in the sensor, the change of the inductance or the capacitance is converted into the change of oscillation frequency through the oscillation circuit, and the change is sent to the MCU42 for digital calculation, so that the change of the tension is obtained; the linear algorithm of the MCU42 internal program can compensate temperature drift and change, which is convenient for realizing higher precision.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (5)
1. The utility model provides an automatic compensation digital tension sensor, includes base (5), installs in mechanical component, digital display subassembly and the sensing subassembly of base (5) up end, mechanical component and digital display subassembly are connected its characterized in that through the sensing subassembly: the mechanical assembly comprises a support (11) arranged on the upper end face of the base (5), a second elastic body (10) is arranged on the upper end face of the support (11), the upper end of the second elastic body (10) is connected with one end of the pressure lever (7), and a first elastic body (8) is arranged below the other end of the pressure lever (7);
the sensing assembly comprises a first fixed grid (2) and a second fixed grid (9) which are arranged on the upper end surface of the base (5), a movable grid (1) is arranged between the first fixed grid (2) and the second fixed grid (9), and the top end of the movable grid (1) is connected with the lower end of the first elastic body (8);
the digital display assembly comprises a circuit board (4) and a capacitor plate group (6), the circuit board (4) is installed on the upper end face of the base (5) and connected with the capacitor plate group (6) in parallel through a lead (3), and the input end of the circuit board (4) is electrically connected with the output ends of the first fixed grid (2), the second fixed grid (9) and the movable grid (1) through the lead (3).
2. The self-compensating digital tension sensor of claim 1, wherein: the circuit board (4) is provided with an oscillating circuit (41) and an MCU (42), the output end of the oscillating circuit (41) is electrically connected with the input end of the MCU (42), and the oscillating circuit (41) is connected with the capacitor plate group (6) in parallel through a lead (3).
3. The self-compensating digital tension sensor of claim 2, wherein: and the linear algorithm of the MCU (42) internal program.
4. The self-compensating digital tension sensor of claim 1, wherein: the movable grid (1) is arranged between the first fixed grid (2) and the second fixed grid (9), and the distance between the movable grid (1) and the first fixed grid (2) and the distance between the movable grid (1) and the second fixed grid (9) are equal.
5. The self-compensating digital tension sensor of claim 1, wherein: the first elastic body (8) and the second elastic body (10) are both made of metal or ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583521.0A CN114112153A (en) | 2021-12-22 | 2021-12-22 | Automatic compensation digital tension sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583521.0A CN114112153A (en) | 2021-12-22 | 2021-12-22 | Automatic compensation digital tension sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114112153A true CN114112153A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111583521.0A Pending CN114112153A (en) | 2021-12-22 | 2021-12-22 | Automatic compensation digital tension sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114112153A (en) |
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2021
- 2021-12-22 CN CN202111583521.0A patent/CN114112153A/en active Pending
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