Integrated strain gauge
By designing a combination of multiple induction coils and vibration strings in the strain gauge, the problem that existing strain gauge is difficult to induce multi-region accuracy, and high-precision induction measurement in multiple regions is achieved.
Patent Information
- Application Number
- CN202422802867.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Most of the existing strain gauges are single-area measurements, making it difficult to achieve multi-area accuracy sensing measurements.
An integrated strain gauge is designed, with multiple induction coils and vibration strings in the protective case, and is installed in the induction area through a threaded sleeve to achieve multi-region accuracy induction.
Multi-region accuracy sensing is realized, and the measurement accuracy and sensitivity are improved.
Smart Images
Figure CN223243555U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensors, in particular to an integrated strain gauge. Background Art
[0002] A strain gauge is a device used to measure changes in the shape or size of an object. It converts these changes into a measurable electrical signal, thereby enabling quantitative detection of the object's strain. Strain gauges are widely used in engineering monitoring, structural health monitoring, geotechnical engineering, and other fields. There are many types of strain gauges, each based on different principles. Common ones include resistance strain gauges and vibrating wire strain gauges. Resistance strain gauges use the property that the resistance of a material changes with strain to perform measurements, while vibrating wire strain gauges sense strain by measuring changes in the vibration frequency of their vibrating wire. The core components of a vibrating wire strain gauge include a vibrating wire and an induction coil. When the stress of the structure being measured changes, the strain gauge deforms synchronously. This deformation is ultimately transmitted to the vibrating wire, causing properties such as the length of the vibrating wire to change, resulting in a change in the vibration frequency of the vibrating wire. By measuring this frequency through the induction coil, the change in stress in the structure can be inferred.
[0003] There are various strain gauges in the prior art. Most of the existing strain gauges are single-region measurements, which makes it inconvenient to perform multi-region sensing measurements. In order to design an integrated strain gauge that can perform multi-region sensing measurements for multi-region precision measurement, the use of such an integrated strain gauge is required. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention provides an integrated strain gauge, which solves the technical problems raised in the above-mentioned background technology.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an integrated strain gauge, comprising a protective shell, a pair of threaded sleeves inserted into the protective shell, a wiring harness assembly mounted on one end of the protective shell, two pairs of bases mounted on the lower wall of the protective shell, and sensing components mounted on the two pairs of bases;
[0006] The induction component comprises two pairs of vibrating strings installed on the base, three induction coils are sleeved on the vibrating strings, and wires are installed on the three induction coils.
[0007] Preferably, the three induction coils are respectively located between two pairs of bases.
[0008] Preferably, the wiring harness assembly includes a first tube body, the first tube body is inserted into the side wall surface of the protective shell, and the three wires are installed inside the first tube body.
[0009] Beneficial effects
[0010] The utility model provides an integrated strain gauge. When the utility model is used, the protective shell is bolted to the position where it needs to be installed through the threaded sleeve. At this time, in order to refine the induction vibration, the lower end of the protective shell is aligned with the induction area. Since three induction coils are opened inside, the inside of the protective shell is divided into three areas. At this time, the vibration of the vibrating string area can be achieved and the signal can be converted through the induction coil and transmitted through the wire, thereby achieving higher precision induction. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the internal structure of an integrated strain gauge described in the present invention.
[0012] In the figure: 1. protective shell; 2. threaded sleeve; 3. first tube body; 4. wire; 5. base; 6. vibrating wire; 7. induction coil. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0014] See also Figure 1 The utility model provides a technical solution: an integrated strain gauge, comprising a protective shell 1, a pair of threaded sleeves 2 inserted into the protective shell 1, a wiring harness assembly installed at one end of the protective shell 1, two pairs of bases 5 installed on the lower wall of the protective shell 1, and sensing components installed on the two pairs of bases 5;
[0015] The induction assembly includes two pairs of vibrating wires 6 mounted on the base 5 , three induction coils 7 mounted on the vibrating wires 6 , and wires 4 mounted on the three induction coils 7 .
[0016] During use, the protective shell 1 is bolted to the position where it needs to be installed through the threaded sleeve 2. In order to refine the induction vibration, the lower end of the protective shell 1 is aligned with the induction area. Since three induction coils 7 are provided inside, the inside of the protective shell 1 is divided into three areas. At this time, the area of the vibrating string 6 can be vibrated and the signal can be converted through the induction coil 7 and transmitted through the wire 4, thereby achieving higher-precision induction.
[0017] This embodiment is further configured such that the three induction coils 7 are respectively located between two pairs of bases 5 .
[0018] This embodiment is further configured such that the wiring harness assembly includes a first tube body 3 , the first tube body 3 is inserted into the side wall surface of the protective shell 1 , and the three wires 4 are installed inside the first tube body 3 .
[0019] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.
[0020] Example: When in use, the protective shell 1 is bolted to the position where it needs to be installed through the threaded sleeve 2. At this time, in order to refine the induction vibration, the lower end of the protective shell 1 is aligned with the induction area. Since three induction coils 7 are opened inside, the inside of the protective shell 1 is divided into three areas. At this time, the area of the vibrating string 6 can be vibrated and the signal can be converted through the induction coil 7 and transmitted through the wire 4, thereby achieving higher-precision induction.
[0021] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.
Claims
1. An integrated strain gauge, comprising a protective shell (1), characterized in that: A pair of threaded sleeves (2) are inserted into the protective shell (1), a wiring harness assembly is installed at one end of the protective shell (1), two pairs of bases (5) are installed on the lower wall of the interior of the protective shell (1), and sensing assemblies are installed on the two pairs of bases (5); The induction component comprises two pairs of bases (5) on which vibrating wires (6) are mounted, three induction coils (7) are mounted on the vibrating wires (6), and a conducting wire (4) is mounted on each of the three induction coils (7).
2. The integrated strain gauge according to claim 1, characterized in that: The three induction coils (7) are respectively located between the two pairs of bases (5).
3. The integrated strain gauge according to claim 1, characterized in that: The wiring harness assembly comprises a first tube body (3), the first tube body (3) is inserted into the side wall surface of the protective shell (1), and the three wires (4) are installed inside the first tube body (3).