Sliding block type vibrating wire sensor and method

Abstract

The invention discloses a sliding block type vibrating wire sensor and method, and the vibrating wire sensor comprises a universal joint, a positioning nut, a sliding pull rod, a front cover, a sealing ring, a linear inclined plane movable sliding block, a plane supporting block, an integrated double coil, a steel wire, a steel wire fixing clamp, a reset spring, a signal line, an outer protection tube, a sliding block, a guide pin, a rotating shaft, a steel wire fixing clamp and a rear cover, according to the integrated double coil, two winding groups can be continuously wound at one time, a connecting line of the two windings is embedded through a reserved line passing groove and is not prone to being broken by external force, the integrated double coil can also be produced in batches by controlling a die hole position, the consistency is good, the defect that the amplitude difference of a steel string is large is overcome, and the production efficiency is improved. And the integrated double coils can be randomly matched with vibrating wire sensors with different sizes for use. According to the sliding block type vibrating wire sensor, the production efficiency can be improved by more than 30%, consumables are reduced, the yield can be improved, the stability of signal acquisition is ensured, and the sensor has extremely high expansibility.

Description

Slider-type vibrating wire sensor and method Technical Field

[0001] This invention belongs to the field of sensor technology, and more specifically, relates to a slider-type vibrating wire sensor and method. Background Technology

[0002] In long-term monitoring scenarios of geotechnical engineering and other types of engineering, displacement sensors are key monitoring equipment, and vibrating wire displacement sensors occupy an important position due to their unique advantages. These sensors convert displacement changes into frequency signals through a simple mechanical structure, enabling undistorted, unattenuated, and stable long-distance transmission of monitoring results in harsh environments of different sites. Therefore, they are widely used and recognized in the field of engineering monitoring.

[0003] Currently, vibrating wire displacement sensors on the market are mainly divided into two categories: single-coil type and dual-coil type. Among them, single-coil vibrating wire displacement sensors are easily affected by damping attenuation, resulting in poor signal output stability; while dual-coil vibrating wire displacement sensors mostly adopt continuous excitation (low-voltage pulses at a specific frequency), which can stably output high-precision signals and has a relative advantage in performance, making it the preferred choice in many engineering monitoring scenarios.

[0004] However, the existing technology still has many shortcomings: (1) The tension spring and steel string of the dual-coil vibrating wire displacement sensor are prone to resonance. To solve this problem, complex and precise components need to be designed, which increases the processing difficulty; (2) The two coils used in the dual-coil sensor are mostly set separately and independently. The coil connection line is easily broken by external force, and the distance error between the two magnetic cores is large, resulting in poor consistency in mass production and affecting the stability of the steel string amplitude; (3) The adaptability of independent dual coils is limited, making it difficult to flexibly match various vibrating wire sensors of different sizes. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a slider-type vibrating wire sensor and method. The sensor assembly is driven to operate via universal joints located at both ends. A positioning nut mounted on the sliding rod is interlocked with the universal joint. When the universal joint is subjected to force and moves, it causes the sliding rod to move as well, thereby driving the sensor assembly to operate. A signal line mounted on the outer side of the bottom end of the sensor assembly transmits the feedback signal to an external detection device to display the real-time frequency value.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a slider-type vibrating wire sensor is provided, comprising: a sensor assembly as the main structure of the vibrating wire sensor; a sliding rod with one end inserted into the end face of the sensor assembly; the other end of the sliding rod connected to a universal joint; and a signal line disposed on the outer side of one bottom end of the sensor assembly. When the universal joint moves under relative force, it drives the sliding rod to move synchronously, thereby driving the sensor assembly to operate. The sensor assembly includes a front cover with a cylindrical groove at its center; an outer protective tube disposed on the outside of the sensor assembly; a rear cover disposed at one end of the outer protective tube and opposite to the front cover; a return spring embedded in the inner wall of the middle portion of the sensor assembly; a linear inclined movable slider connected to the return spring at its bottom; and a first steel wire fixed on the linear inclined movable slider. The system comprises a clamp, a guide pin at the bottom of the first steel wire fixing clamp, a steel wire connected at one end to the guide pin, a second steel wire fixing clamp at the other end of the steel wire and connected to the outermost side of the inner wall of the sensor assembly, an integrated double coil on the inner wall of the sensor assembly, a planar support block connected to the inner wall of the sensor assembly, and a slider at the end of the sliding rod. The slider slides against the linear inclined plane and the planar support block. The integrated double coil includes a magnetic core hole at the center of the integrated double coil, a wire groove on the outside of the integrated double coil, a first magnetic core at the top inside the magnetic core hole, a second magnetic core at the bottom inside the magnetic core hole, and a steel wire hole at the middle position inside the magnetic core hole. The magnetic core hole is divided into two parts, the first magnetic core and the second magnetic core, through the steel wire hole to provide adaptability.

[0007] Furthermore, the signal line is used to transmit feedback signals to an external detection device to display the corresponding frequency value in real time.

[0008] Furthermore, the sensor assembly can generate an alternating magnetic field and perform magnetic cutting motion to produce a feedback signal.

[0009] Furthermore, the sensor assembly also includes a sealing ring disposed in the central sealing groove of the front cover and a rotating shaft disposed in the top groove of the linear inclined movable slider.

[0010] Furthermore, the front cover, outer protective tube, and rear cover form a whole, sealing the sensor assembly to prevent other impurities from entering it.

[0011] Furthermore, the slider compresses the linear inclined movable slider and the first steel wire fixing clamp, which move outward along the rotating axis.

[0012] Furthermore, the integrated double coil also includes a first coil slot located at the top of the outer side of the integrated double coil and a second coil slot located at the bottom of the outer side of the integrated double coil. The integrated double coil can continuously wind two winding groups at one time, and the connecting wires of the two winding groups are embedded by reserving the wire passage slots, making them less prone to breakage by external forces.

[0013] Furthermore, the distance between the first magnetic core and the second magnetic core can be controlled by controlling the mold hole position to avoid the defect of large distance difference between the two and maintain consistency.

[0014] Furthermore, it also includes a positioning nut disposed on the sliding rod.

[0015] According to a second aspect of the present invention, a working principle of a slider-type vibrating wire sensor is provided, which is implemented using a slider-type vibrating wire sensor, including: S100: the universal joints at both ends of the vibrating wire sensor are interlocked with the positioning nuts and then installed and fixed; S200: after the universal joints at both ends move under relative force, the sliding rod will move outward along the center of the sealing ring installed in the front cover, and drive the slider to slide along the plane of the planar support block; S300: the slider simultaneously slides along the linear inclined plane movable slider from the inside to the outside, the inclined plane becoming thicker from the inside to the outside. As the thickness of the linear inclined plane movable slider increases, the slider compresses the linear... The inclined plane movable slider and the steel string fixing clamp move outward along the rotation axis; S400: When one end of the steel string is locked by the steel string fixing clamp, the other end is linearly tightened by the moving steel string fixing clamp through the guide pin under the action of the return spring, gradually increasing in size; S500: The external detection device sends an excitation pulse signal to the alternating magnetic field generated by the integrated double coil through the signal line, causing the steel string to vibrate rapidly under the action of the magnetic force; S600: The steel string performs magnetic cutting motion, generating a feedback signal to the integrated double coil, which is then transmitted to the external detection device through the signal line to display the corresponding real-time frequency value.

[0016] Overall, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: 1. The vibrating wire sensor of this invention drives the sensor assembly to work through universal joints located at both ends of the sensor assembly. The positioning nut installed on the sliding rod is interlocked with the universal joint. When the universal joint is subjected to force and moves, it drives the sliding rod to move together, thereby driving the sensor assembly to start working. The feedback signal is transmitted to an external detection device through a signal line installed on the outer side of the bottom end of the sensor assembly to display the corresponding real-time frequency value.

[0017] 2. The sensor assembly of the present invention is formed as a whole by the front cover, the outer protective tube and the rear cover, which seals the entire sensor assembly to prevent other impurities from entering it. By sliding the slider installed at the end of the sliding rod, the linear inclined movable slider and the first steel wire fixing clamp are squeezed to move outward along the rotating axis. The second steel wire fixing clamp installed on the outermost side of the inner wall of the sensor assembly locks one end of the steel wire. Then, the guide pin is linearly tightened by the return spring, which increases in size, thereby forcing the steel wire to make magnetic cutting motion in the integrated double coil to generate a feedback signal to the integrated double coil.

[0018] 3. The integrated double coil of the present invention divides the magnetic core hole into two parts by a first magnetic core located at the top inside the magnetic core hole and a second magnetic core located at the bottom inside the magnetic core hole, so as to have stronger adaptability and reduce errors and maintain production consistency by controlling the mold hole position. By the first coil slot located at the top outside the integrated double coil and the second coil slot located at the bottom outside the integrated double coil, two winding groups can be wound continuously at one time, and by reserving the wire passage slot, the connecting wire of the two winding groups is embedded, which is not easy to break due to external force. Attached Figure Description

[0019] Figure 1 is a structural schematic diagram of the slider-type high-precision vibrating wire sensor according to an embodiment of the present invention; Figure 2 is a top view of the slider-type high-precision vibrating wire sensor according to an embodiment of the present invention; Figure 3 is a front view of the slider-type high-precision vibrating wire sensor according to an embodiment of the present invention; Figure 4 is a cross-sectional view of the slider-type high-precision vibrating wire sensor at point A according to an embodiment of the present invention; Figure 5 is a top view of the integrated dual coil of the slider-type high-precision vibrating wire sensor according to an embodiment of the present invention; Figure 6 is a cross-sectional view of the integrated dual coil of the slider-type high-precision vibrating wire sensor according to an embodiment of the present invention at point B; Figure 7 is a flowchart of the operation of the slider-type high-precision vibrating wire sensor according to an embodiment of the present invention.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-universal joint, 2-locating nut, 3-sliding rod, 4-front cover, 5-sealing ring, 6-linear inclined sliding block, 7-planar support block, 8-integrated dual coil, 81-magnetic core hole, 82-wire groove, 83-first magnetic core, 84-second magnetic core, 85-steel string hole, 86-first coil groove, 87-second coil groove, 9-steel string, 10-first steel string fixing clip, 11-reset spring, 12-signal line, 13-outer protective tube, 14-slider, 15-guide pin, 16-rotating shaft, 17-second steel string fixing clip, 18-rear cover. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present invention, "multiple" means at least two.

[0025] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0026] This invention provides a slider-type vibrating wire sensor, as shown in Figures 1, 2, 3, and 4. It includes a universal joint 1, a positioning nut 2, a sliding rod 3, a front cover 4, a sealing ring 5, a linear inclined movable slider 6, a planar support block 7, an integrated double coil 8, a steel wire 9, a first steel wire fixing clamp 10, a return spring 11, a signal line 12, an outer protective tube 13, a slider 14, a guide pin 15, a rotating shaft 16, a second steel wire fixing clamp 17, and a rear cover 18. The front cover 4, sealing ring 5, linear inclined movable slider 6, planar support block 7, integrated double coil 8, steel wire 9, first steel wire fixing clamp 10, return spring 11, outer protective tube 13, slider 14, guide pin 15, rotating shaft 16, second steel wire fixing clamp 17, and rear cover 18 together constitute the sensor assembly, which is the main structure of the vibrating wire sensor. Two universal joints 1 are located at opposite ends of the sensor assembly, ensuring that their end faces are flush. A sliding rod 3 is connected to the bottom of one universal joint 1, and the other end of the sliding rod 3 is inserted into the end face of the sensor assembly. A positioning nut 2 is installed on the sliding rod 3. The universal joint 1 and the positioning nut 2 need to be interlocked. When the universal joint 1 moves under relative force, it drives the sliding rod 3 to move together, thereby driving the sensor assembly to work. A signal line 12 is installed on the outside of one bottom end of the sensor assembly. The signal line 12 can be used to transmit feedback signals to an external detection device to display the real-time frequency value. The external detection device sends an excitation pulse signal to the sensor assembly. The sensor assembly generates an alternating magnetic field and performs magnetic cutting motion to generate a feedback signal, which is transmitted to the external detection device via the signal line 12 to display the real-time frequency value. The vibrating wire sensor of the present invention drives the sensor assembly to work through universal joints located at both ends of the sensor assembly. The universal joints are interlocked and fixed by positioning nuts installed on the sliding rod. When the universal joints are subjected to force and move, they drive the sliding rod to move together, thereby driving the sensor assembly to start working. The feedback signal is transmitted to an external detection device through a signal line installed on the outer side of the bottom end of the sensor assembly to display the corresponding real-time frequency value.

[0027] Specifically, as shown in Figures 3 and 4, the sensor assembly includes a front cover 4, a sealing ring 5, a linear inclined sliding block 6, a planar support block 7, an integrated dual coil 8, a steel wire 9, a first steel wire fixing clip 10, a return spring 11, an outer protective tube 13, a slider 14, a guide pin 15, a rotating shaft 16, a second steel wire fixing clip 17, and a rear cover 18. The front cover 4 has a three-section structure. A protective post is provided at the top of the front cover 4 to prevent the sliding rod 3 inserted into the front cover 4 from shifting position. A baffle is provided in the middle of the front cover 4, and a piston seat is provided at the bottom of the front cover 4. With the cooperation of the baffle and the piston seat, the front cover 4 can be stably installed at one end of the outer protective tube 13 and maintain a sealing effect to prevent other impurities from entering the sensor. In the sensor assembly, a cylindrical groove is formed at the center of the front cover 4 for inserting the sliding pull rod 3. Multiple sealing slots (two in this embodiment) are formed on the cylindrical groove. A sealing ring 5 is installed in the central sealing slot of the front cover 4, closely adhering to the sliding pull rod 3 to maintain a good sealing effect and prevent other impurities from entering the sensor assembly. The outer protective tube 13 is located on the outside of the sensor assembly to protect and seal it. A rear cover 18 is installed at the other end of the outer protective tube 13. A wire-passing groove is formed on the outside of the rear cover 18, through which the signal line 12 enters the sensor assembly. A non-through mounting slot is formed at the center of the rear cover 18, on which the universal joint 1 is installed. A return spring 11 is embedded in the sensor assembly. The bottom of the linear inclined movable slider 6 is connected to the return spring 11 on the inner wall of the middle part. The top of the linear inclined movable slider 6 is provided with a slot for mounting the rotating shaft 16. The linear inclined movable slider 6 can rotate around the rotating shaft 16. A first steel wire fixing clamp 10 is installed on the linear inclined movable slider 6. Under the pressure of the slider 14, the linear inclined movable slider 6 and the first steel wire fixing clamp 10 move outward along the rotating shaft 16. The bottom of the first steel wire fixing clamp 10 is provided with a guide pin 15. One end of the steel wire 9 is connected to the guide pin 15. The steel wire 9 passes through the integrated double coil 8. The steel wire 9 can vibrate rapidly in the integrated double coil 8 and perform magnetic cutting motion to generate a feedback signal to the integrated double coil 8. The double coil 8 is connected to the inner wall of the sensor assembly. The other end of the steel wire 9 is connected to the second steel wire fixing clamp 17. The second steel wire fixing clamp 17 is installed on the outermost side of the inner wall of the sensor assembly. The second steel wire fixing clamp 17 locks one end of the steel wire 9. The steel wire 9 is linearly tightened from small to large under the action of the return spring 11 through the guide pin 15. The planar support block 7 is connected to the inner wall of the sensor assembly. The slider 14 is installed at the end of the sliding rod 3. The slider 14 is in close contact with the linear inclined movable slider 6 and the planar support block 7. The slider 14 can slide along the plane of the planar support block 7 under the drive of the sliding rod 3. At the same time, the slider 14 also slides along the linear inclined movable slider 6 from the inside to the outside of the inclined plane that becomes thicker.The sensor assembly of the present invention is formed as a whole by the front cover, the outer protective tube and the rear cover, which seals the entire sensor assembly to prevent other impurities from entering. By sliding the slider installed at the end of the sliding rod, the linear inclined movable slider and the first steel wire fixing clamp are squeezed to move outward along the rotating axis. The second steel wire fixing clamp installed on the outermost side of the inner wall of the sensor assembly locks one end of the steel wire. Then, the guide pin is linearly tightened by the return spring, which increases in size, thereby forcing the steel wire to make magnetic cutting motion in the integrated double coil to generate a feedback signal to the integrated double coil.

[0028] Specifically, as shown in Figures 5 and 6, the integrated double coil 8 includes a magnetic core hole 81, a wire passage groove 82, a first magnetic core 83, a second magnetic core 84, a steel wire hole 85, a first coil groove 86, and a second coil groove 87. The magnetic core hole 81 is located at the center of the integrated double coil 8. The magnetic core hole 81 generates an alternating magnetic field under the action of an excitation pulse signal from an external detection device. The steel wire 9 passes through the magnetic core hole 81 and performs a magnetic cutting motion. The wire passage groove 82 is located on the outside of the integrated double coil 8 and is used for coil winding. Inside the magnetic core hole 81, the steel wire hole 85 is installed at the middle position inside the magnetic core hole 81, dividing the magnetic core hole 81 into two parts: the first magnetic core 83 and the second magnetic core 84. The first magnetic core 83 is located at the top inside the magnetic core hole 81, and the second magnetic core 84 is located at the bottom inside the magnetic core hole 81. The first magnetic core 83 and the second magnetic core 84... The distance 4 can be controlled by controlling the mold hole position. In actual production, the error can be reduced to less than 0.1mm and the consistency of batch production is good. This avoids the defect of large distance difference between the first magnetic core 83 and the second magnetic core 84. On the outside of the integrated double coil 8, the first coil slot 86 and the second coil slot 87 are separated into two parts by the steel wire hole 85. The first coil slot 86 is located at the top of the outside of the integrated double coil 8, and the second coil slot 87 is located at the bottom of the outside of the integrated double coil 8. Two winding groups can be wound continuously at one time, and the connecting wire of the two winding groups is embedded through the reserved wire groove 82, which is not easy to break due to external force. Due to the split structure design, the integrated double coil 8 has stronger adaptability and can be matched with vibrating wire crack gauges, vibrating wire strain gauges, vibrating wire piezometers, vibrating wire rebar gauges and other vibrating wire sensors of different sizes, and performs equally well. The integrated double coil of the present invention divides the magnetic core hole into two parts by a first magnetic core located at the top inside the magnetic core hole and a second magnetic core located at the bottom inside the magnetic core hole, so as to have stronger adaptability and reduce errors and maintain production consistency by controlling the mold hole position. By using the first coil slot located at the top outside the integrated double coil and the second coil slot located at the bottom outside the integrated double coil, two winding groups can be wound continuously at one time, and by reserving the wire passage slot, the connecting wire of the two winding groups is embedded, which is not easy to break due to external force.

[0029] In a vibrating wire sensor, the universal joint 1 moves relative to the force, which drives the sliding rod 3 to move outward, thereby pulling the steel wire 9 and causing the length of the steel wire 9 to change. The change in the length of the steel wire 9 is approximately the same as the distance the sliding rod 3 moves outward. The change in the length of the steel wire 9 is reflected by the tension on the steel wire 9.

[0030] The relationship between the length L of the steel string 9 and the tension F acting on the steel string 9 is as follows: Where L represents the length of the steel string 9, F represents the tension on the steel string 9, and K is the mechanical stiffness coefficient of the vibrating wire sensor (determined by structural parameters such as the slope of the inclined plane and the elasticity of the return spring, and is a fixed value).

[0031] The vibrating wire sensor is based on the relationship between the vibration frequency of the steel wire 9 and the tension of the steel wire 9: Where L represents the length of the steel string 9, F represents the tension on the steel string 9, f is the natural frequency of the vibration of the steel string 9, and μ is the linear density of the material selected for the steel string 9.

[0032] The relationship between the vibration frequency of the steel string 9 and the magnitude of the tension acting on the steel string 9 is as follows: when the linear density μ of the material selected for the steel string 9 and the length L of the steel string 9 are constant, The relationship between the length L of the steel string 9 and the tension F acting on it can be directly proportional to the vibration frequency of the steel string 9. By combining the formula for the relationship between the length L of the steel string 9 and the tension F acting on the steel string 9, the length of the steel string 9 can be calculated from the vibration frequency of the steel string 9, and then the relationship between the change in the displacement of the universal joint 1 can be obtained.

[0033] in, This indicates the displacement of universal joint 1. This indicates the actual length of steel string 9. This indicates the original length of the steel string 9.

[0034] As shown in Figure 7, in another embodiment of the present invention, a working principle of a slider-type vibrating wire sensor is provided, including the following steps: the universal joints 1 at both ends of the vibrating wire sensor are interlocked with the positioning nuts 2 and then installed and fixed.

[0035] After the two universal joints 1 move relative to each other under force, the sliding rod 3 will move outward along the center of the sealing ring 5 installed in the front cover 4, and drive the slider 14 to slide along the plane of the planar support block 7.

[0036] Simultaneously, slider 14 slides along the linear inclined plane movable slider 6 from the inside out, where the thickness gradually increases. As the thickness of the linear inclined plane movable slider 6 increases, slider 14 presses the linear inclined plane movable slider 6 and the first steel wire fixing clamp 10 to move outward along the rotating shaft 16.

[0037] When one end of the steel string 9 is locked by the second steel string fixing clamp 17, the other end is linearly tightened by the moving first steel string fixing clamp 10 through the guide pin 15 under the action of the return spring 11, gradually increasing in size.

[0038] An external detection device sends an excitation pulse signal to the integrated double coil 8 through the signal line 12, which generates an alternating magnetic field, causing the steel string 9 to vibrate rapidly under the action of the magnetic field force.

[0039] The steel string 9 generates a feedback signal by performing a magnetic cutting motion, which is then transmitted to the integrated dual coil 8 via the signal line 12 to an external detection device to display the corresponding real-time frequency value.

[0040] In summary, this slider-type vibrating wire sensor can improve production efficiency by more than 30%, reduce consumables while increasing yield, ensure signal acquisition stability, and has strong scalability.

[0041] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A slider-type vibrating wire sensor, characterized in that, include: The sensor assembly, which is the main structure of the vibrating wire sensor, consists of a sensor component, a sliding rod (3) with one end inserted into the end face of the sensor component, a universal joint (1) with the other end of the sliding rod (3) connected to the other end of the sliding rod (3), and a signal line (12) located on the outer side of the bottom end of the sensor component. When the universal joint (1) moves under relative force, it drives the sliding rod (3) to move synchronously, thereby driving the sensor component to work. The sensor component includes a front cover (4) with a cylindrical groove at the center, an outer protective tube (13) located on the outside of the sensor component, a rear cover (18) located at one end of the outer protective tube (13) and opposite to the front cover (4), a return spring (11) embedded in the inner wall of the middle part of the sensor component, a linear inclined movable slider (6) connected to the return spring (11) at the bottom, a first steel wire fixing clip (10) located on the linear inclined movable slider (6), a guide pin (15) located at the bottom of the first steel wire fixing clip (10), and a signal line (15) connected to the guide pin (15) at one end. The sensor assembly includes a steel wire (9), a second steel wire fixing clip (17) located at the other end of the steel wire (9) and connected to the outermost side of the inner wall of the sensor assembly, an integrated double coil (8) located on the inner wall of the sensor assembly, a planar support block (7) connected to the inner wall of the sensor assembly, and a slider (14) located at the end of the sliding rod (3). The slider (14) slides against the linear inclined movable slider (6) and the planar support block (7). The integrated double coil (8) includes a steel wire (9) located at the other end of the sensor assembly and connected to the outermost side of the inner wall of the sensor assembly. The integrated double coil (8) has a core hole (81) at the center, a wire groove (82) on the outside of the integrated double coil (8), a first core (83) at the top inside the core hole (81), a second core (84) at the bottom inside the core hole (81), and a steel wire hole (85) at the middle inside the core hole (81). The core hole (81) is divided into two parts, the first core (83) and the second core (84), through the steel wire hole (85) to provide compatibility.

2. The slider-type vibrating wire sensor according to claim 1, characterized in that, The signal line (12) is used to transmit feedback signals to external detection equipment to display the corresponding frequency value in real time.

3. A slider-type vibrating wire sensor according to claim 2, characterized in that, The sensor assembly can generate an alternating magnetic field and perform magnetic cutting motion to produce a feedback signal.

4. A slider-type vibrating wire sensor according to any one of claims 1-3, characterized in that, The sensor assembly also includes a sealing ring (5) located in the central sealing groove of the front cover (4) and a rotating shaft (16) located in the top groove of the linear inclined movable slider (6).

5. A slider-type vibrating wire sensor according to claim 4, characterized in that, The front cover (4), outer protective tube (13) and rear cover (18) form a whole to seal the sensor assembly to prevent other impurities from entering it.

6. A slider-type vibrating wire sensor according to claim 5, characterized in that, The slider (14) presses the linear inclined movable slider (6) and the first steel wire fixing clamp (10) to move outward along the rotating shaft (16).

7. A slider-type vibrating wire sensor according to any one of claims 1-3, characterized in that, The integrated double coil (8) also includes a first coil slot (86) located at the top of the outer side of the integrated double coil (8) and a second coil slot (87) located at the bottom of the outer side of the integrated double coil (8). The integrated double coil (8) can continuously wind two winding groups at one time, and the connecting wire of the two winding groups is embedded by reserving the wire passage slot (82), which is not easy to break the wire due to external force.

8. A slider-type vibrating wire sensor according to claim 7, characterized in that, The distance between the first magnetic core (83) and the second magnetic core (84) can be controlled by controlling the mold hole position to avoid the defect of large distance difference between the two and maintain consistency.

9. A slider-type vibrating wire sensor according to any one of claims 1-3, characterized in that, It also includes a positioning nut (2) provided on the sliding tie rod (3).

10. The working principle of a slider-type vibrating wire sensor, characterized in that, The application of a slider-type vibrating wire sensor as described in any one of claims 1-9 includes: S100: the universal joints (1) at both ends of the vibrating wire sensor are interlocked with the positioning nuts (2) and then installed and fixed; S200: after the universal joints (1) at both ends move under relative force, the sliding rod (3) will move outward along the center of the sealing ring (5) installed in the front cover (4), and drive the slider (14) to slide along the plane of the planar support block (7); S300: the slider (14) slides along the linear inclined movable slider (6) from the inside to the outside of the inclined plane, which is thinner and thicker. As the thickness of the linear inclined movable slider (6) increases, the slider (14) squeezes the linear inclined movable slider (6) and the steel wire for fixing. The clamp (10) moves outward along the rotating shaft (16); S400: When one end of the steel string (9) is locked by the steel string fixing clamp (10), the other end is linearly tightened by the moving steel string fixing clamp (10) through the guide pin (15) under the action of the return spring (11); S500: The external detection device sends an excitation pulse signal to the alternating magnetic field generated by the integrated double coil (8) through the signal line (12), so that the steel string (9) vibrates rapidly under the action of the magnetic force; S600: The steel string (9) performs magnetic cutting motion to generate a feedback signal to the integrated double coil (8), and then transmits it to the external detection device through the signal line (12) to display the real-time corresponding frequency value.

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