CN211954510U - Underwater self-compensation tension sensor - Google Patents
Underwater self-compensation tension sensor Download PDFInfo
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- CN211954510U CN211954510U CN202021097852.4U CN202021097852U CN211954510U CN 211954510 U CN211954510 U CN 211954510U CN 202021097852 U CN202021097852 U CN 202021097852U CN 211954510 U CN211954510 U CN 211954510U
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Abstract
The utility model discloses an underwater self-compensating tension sensor, which comprises a tension sensor body, wherein the tension sensor body comprises a pull rod and a cylindrical detection elastic body, a detection strain gauge and a detection circuit board are arranged inside the detection elastic body, and the detection strain gauge is connected with the detection circuit board to form a detection bridge; a compensator is arranged at the opening end of one side of the detection elastic body, the compensator comprises a pressure measurement elastic body, a compensation strain gauge and a compensation circuit board, and the compensation strain gauge is electrically connected to the compensation circuit board to form a compensation bridge; the compensation circuit board is electrically connected with the detection circuit board through a lead so that the compensation bridge is electrically connected with the detection bridge, and the compensation bridge is connected with the detection bridge in parallel; this force sensor can carry out self-compensating to water pressure, eliminates water pressure's influence, guarantees accuracy and the security that the power value detected.
Description
Technical Field
The utility model relates to a sensor technical field specifically is a self compensating force transducer under water.
Background
It is known that underwater operation facilities such as marine fishery culture, scientific research and the like are often subjected to the impact of ocean currents and ocean waves, and safe measurement and control of underwater steel cable bearing become necessary to avoid loss. For the underwater steel cable, basically, a tension sensor is adopted, but the tension sensor can be influenced by interference factors such as water pressure, water temperature and the like, so that the measured tension has errors, and the measuring effect is greatly influenced. At present, no tension sensor which can be effectively used in the environment exists, and the measurement effect of other generation products is not ideal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an underwater self compensating force sensor, this sensor can carry out the self compensating to water pressure, eliminates hydraulic influence, guarantees accuracy and the security that the power value detected.
The utility model provides a technical scheme that its technical problem adopted is:
an underwater self-compensation tension sensor comprises a tension sensor body, wherein the tension sensor body comprises a pull rod and a cylindrical detection elastic body, a detection strain gauge and a detection circuit board are arranged in the detection elastic body, and the detection strain gauge is connected with the detection circuit board to form a detection bridge; the compensation device comprises a detection elastic body, a compensation strain gauge and a compensation circuit board, wherein the open end of one side of the detection elastic body is provided with a compensator, the compensator comprises a pressure measurement elastic body, the pressure measurement elastic body is provided with a blind hole, the bottom of the blind hole is provided with the compensation strain gauge and the compensation circuit board, and the compensation strain gauge is electrically connected to the compensation circuit board;
the blind hole end of the pressure measuring elastic body is connected with one side of the detection elastic body through a connecting seat; the compensation circuit board is electrically connected with the detection circuit board through a lead so that the compensation bridge is electrically connected with the detection bridge, and the compensation bridge is connected with the detection bridge in parallel;
a sealing head is arranged at the opening end of the other side of the detection elastic body; the detection circuit board is also connected with a signal transmission cable, one end of the signal transmission cable is electrically connected with the detection circuit board, and the other end of the signal transmission cable extends out of the sealing head.
The utility model has the advantages that the compensator is arranged on the basis of the body of the tension sensor, the compensator induces water pressure at the same position under water, and the compensation bridge can compensate the influence of the water pressure on the detection bridge; when the tension of the rope occurs, the compensation bridge is only equivalent to a resistance system preset in advance and determined, and the force detection of the detection bridge is not influenced; thereby eliminating the superposition influence of water pressure on tension measurement and ensuring the accuracy of force detection.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
fig. 3 is a schematic diagram of the electrical connection between the compensation bridge and the detection bridge of the present invention.
Detailed Description
Referring to fig. 1 and 2, the present invention provides an underwater self-compensating force sensor, which includes a force sensor body, the force sensor body includes a pull rod 12 and a cylindrical detection elastic body 1, a detection strain gauge 2 and a detection circuit board 3 are disposed inside the detection elastic body 1, and the detection strain gauge 3 is connected to the detection circuit board 3 to form a detection bridge; the open end of one side of the detection elastic body 1 is provided with a compensator, the compensator comprises a pressure measurement elastic body 4, the pressure measurement elastic body 4 is provided with a blind hole 5, the bottom of the blind hole 5 is provided with a compensation strain gauge 6 and a compensation circuit board 7, and the compensation strain gauge 6 is electrically connected to the compensation circuit board 7 to form a compensation bridge.
The blind hole end of the pressure measuring elastic body 4 is connected with one side of the detection elastic body 1 through a connecting seat 8; the compensation circuit board 7 is electrically connected to the detection circuit board 3 through a wire 9, so that the compensation bridge is electrically connected to the detection bridge, and as shown in fig. 3, the compensation bridge is connected in parallel to the detection bridge.
A sealing head 10 is arranged at the other opening end of the detection elastic body; the detection circuit board 3 is also connected with a signal transmission cable 11, one end of the signal transmission cable 11 is electrically connected with the detection circuit board, and the other end of the signal transmission cable extends out of the sealing head 10.
When the underwater detection device works underwater, the detection elastic body 1 is under the action of water pressure, so that the resistance of a bridge arm of a detection bridge is changed (in the direction of an arrow), and a negative signal is generated and output; on the other hand, the pressure measuring elastic body 4 is acted by water pressure, so that
The resistance of the legs of the compensation bridge changes (in the direction of the arrow) resulting in a positive signal output, the two signals being equal in value, thus compensating for the effect of the water pressure on the sensing bridge. When the cable tension occurs, the compensation bridge is only equivalent to a resistance system determined in advance, and the force detection of the detection bridge is not influenced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the invention is not limited to the embodiments described herein, but is capable of other embodiments according to the invention, and may be used in various other applications, including, but not limited to, industrial. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (1)
1. An underwater self-compensation tension sensor comprises a tension sensor body, wherein the tension sensor body comprises a pull rod and a cylindrical detection elastic body, a detection strain gauge and a detection circuit board are arranged in the detection elastic body, and the detection strain gauge is connected with the detection circuit board to form a detection bridge;
the blind hole end of the pressure measuring elastic body is connected with one side of the detection elastic body through a connecting seat; the compensation circuit board is electrically connected with the detection circuit board through a lead so that the compensation bridge is electrically connected with the detection bridge, and the compensation bridge is connected with the detection bridge in parallel;
a sealing head is arranged at the opening end of the other side of the detection elastic body; the detection circuit board is also connected with a signal transmission cable, one end of the signal transmission cable is electrically connected with the detection circuit board, and the other end of the signal transmission cable extends out of the sealing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021097852.4U CN211954510U (en) | 2020-06-15 | 2020-06-15 | Underwater self-compensation tension sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021097852.4U CN211954510U (en) | 2020-06-15 | 2020-06-15 | Underwater self-compensation tension sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211954510U true CN211954510U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021097852.4U Active CN211954510U (en) | 2020-06-15 | 2020-06-15 | Underwater self-compensation tension sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211954510U (en) |
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2020
- 2020-06-15 CN CN202021097852.4U patent/CN211954510U/en active Active
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