CN107144262A - A kind of double-shaft tilt angle sensor based on conducting probe - Google Patents

Abstract

The invention provides a dual-axis inclination sensor based on a conductivity probe, including a gland, a probe, a base, a solution, a conductivity liquid chamber and a sealing seat; a blind hole is processed in the third-level groove on the upper part of the base, The bottom of the probe is installed in the blind hole; the lower part of the conductive liquid tank is screwed into the second-level groove of the base through threads; the lower part of the sealing seat is connected with the upper groove of the conductive liquid tank through threads; Stepped through holes corresponding to blind holes are processed in the third-level groove on the top of the seat; bosses corresponding to the stepped through holes are processed at the bottom of the gland, and through holes are provided in the middle of the bosses; the gland is placed on In the third-level groove on the top of the sealing seat; the top of the probe passes through the through hole of the sealing seat and the boss in turn; the middle part of the upper end of the gland is processed with a through hole, and the slotted bolt passes through the through hole on the gland The sealing seat is screwed into the sealing seat, thereby forming a closed space in the conductive liquid compartment, and the solution is stored in the closed space of the conductive liquid compartment.

Description

A dual-axis inclination sensor based on conductivity probe

technical field

The invention relates to the field of landslide monitoring, in particular to a dual-axis inclination sensor based on a conductance probe, which can monitor the deformation angle of a deep landslide body.

Background technique

There are many mountains in our country, and landslide disasters occur frequently. Landslides are still very sudden and destructive when current scientific and technological research cannot fully explain the mechanism and evolution process of landslides. In order to effectively avoid the losses caused by landslide disasters, effective monitoring and prediction of landslides is currently the most effective means.

Common landslide monitoring methods can be divided into surface monitoring method and deep monitoring method. The surface monitoring method only monitors landslide change factors such as surface displacement, precipitation, and pore water pressure of the landslide body. The deep part is generated and gradually spread to the surface, so the accuracy of deep landslide monitoring is higher.

Common landslide deep monitoring parameters include deep displacement, force, and pore water pressure, among which deep displacement is the most important parameter for landslide monitoring and prediction. The inclinometer is often used to monitor the deep displacement, and the inclinometer calculates the deep displacement of the landslide by monitoring the deformation angle of the landslide. The inclination data measured by the common inclinometer is one-dimensional data, that is, it can only reflect the inclination data of a certain axis in the rectangular coordinate system, so the calculation result can only reflect the displacement projection of the landslide body in a certain direction in the rectangular coordinate system , and if the design of the inclinometer is based on the dual-axis inclination sensor, the final result can be the displacement projection of the landslide in two directions in the Cartesian coordinate system, and the displacement data in the two directions will be more beneficial to the landslide. Analyze and forecast.

Contents of the invention

In view of this, an embodiment of the present invention provides a conductivity probe-based dual-axis inclination sensor.

An embodiment of the present invention provides a dual-axis inclination sensor based on a conductivity probe, including a gland, a plurality of probes, a base, a solution, a conductivity liquid chamber, slotted bolts and a sealing seat, and the upper part of the base is provided with three Level grooves, wherein a plurality of blind holes are arranged in the third level grooves, and a second rubber ring is installed in each of the blind holes with an interference fit, and a through hole is processed in the middle of each second rubber ring, and each probe The bottom of the needle is respectively put into the through hole in the middle part of the corresponding second rubber ring through interference fit and is in contact with the base; the first O-ring is placed in the first-level groove of the base, and the second-level groove of the base The groove is processed with threads, and the lower part of the conductive liquid tank is screwed into the second-level groove of the base through threads and the first O-ring is pressed to seal; the upper groove of the conductive liquid tank is placed with a second O-ring The upper groove of the conductive liquid tank is processed with threads, and the lower part of the sealing seat is connected with the upper groove of the conductive liquid tank through threads, and at the same time, the second O-ring is pressed to seal; the top of the sealing seat is processed with three level groove, wherein the third level groove is processed with a plurality of stepped through holes corresponding to the plurality of blind holes in the third level groove of the base, each step through hole is provided with a first rubber ring, the first There is a through hole in the middle of the rubber ring; the bottom of the gland is processed with a plurality of bosses corresponding to the stepped through holes in the third-level groove on the top of the sealing seat, and a through hole is arranged in the middle of each boss; the gland Place it in the third-level groove on the top of the sealing seat and make the plurality of bosses at the bottom of the gland contact with the plurality of first rubber rings; in this way, the top of each probe passes through the sealing seat, the first rubber ring and the The through hole of the boss of the gland; the middle part of the upper end of the gland is provided with a through hole, and the slotted bolt passes through the through hole on the gland and is screwed into the sealing seat through threads, and at the same time, each first rubber ring will be squeezed, Make it radially deformed, so as to hug and seal the probe in the first rubber ring, thereby forming a closed space in the conductive liquid compartment, and the solution is contained in the closed space of the conductive liquid compartment.

Further, the biaxial inclination sensor also includes a temperature base and a temperature probe, the middle part of the temperature base is processed with a threaded through hole, and the temperature probe is screwed into the threaded through hole through threads; the lower end of the temperature base is fixed on the On the secondary groove at the upper end of the sealing seat; a third O-ring for sealing is provided between the temperature seat and the primary groove at the upper end of the sealing seat.

Further, the dual-axis inclination sensor also includes a circuit board, a fixed plate, a circuit seat and a circuit compartment; the lower end of the circuit compartment is connected to the upper end of the temperature seat through threads, and the groove for the upper end of the circuit compartment and the temperature seat is placed between the Sealed fourth O-ring, the upper end of the circuit compartment is processed with a third-level groove, and the circuit seat is screwed into the third-level groove of the circuit compartment through threads; the fixed plate and the circuit seat are provided with corresponding through holes , the fixing bolts pass through the through holes on the fixing plate and the circuit seat in turn and are connected with the nuts, thereby fixing the fixing plate on the circuit seat; the circuit board is fixed on the upper part of the fixing plate by fixing screws;

Further, the biaxial inclination sensor also includes a top cover, waterproof connectors and cables, the lower end of the top cover is connected to the second-level groove at the upper end of the circuit compartment through threads, and the lower end of the top cover is connected with the first-level groove at the upper end of the circuit compartment. There is a fifth O-ring for sealing between them; the top cover is processed with a stepped through hole, and a gasket is placed in the stepped through hole, and the cable passes through the gasket and the through hole of the waterproof joint in turn and then connects to the circuit board. The lower part of the waterproof connector is screwed into the stepped through hole of the top cover while tightly hugging the cable for sealing.

Further, the number of probes is 8.

Further, the output data of the probe and the temperature probe are input into the circuit board, and the output data of the probe and temperature are processed by the circuit board to obtain the inclination angle of the two axes.

The beneficial effects brought by the technical solution provided by the embodiments of the present invention are: the present invention adopts the dual-axis inclination sensor as the basis for the design of the inclinometer, and the final result can obtain the displacement projection of the landslide body in two directions in the Cartesian coordinate system , the displacement data in two directions will be more conducive to the analysis and prediction of the landslide mass.

Description of drawings

FIG. 1 is a schematic diagram of a measurement axis of a dual-axis inclination sensor based on a conductivity probe according to the present invention.

FIG. 2 is a schematic diagram of the working principle of a conductivity probe-based dual-axis inclination sensor of the present invention.

Fig. 3 is a front view of a conductivity probe-based dual-axis inclination sensor of the present invention.

FIG. 4 is a top view of a conductivity probe-based dual-axis inclination sensor of the present invention.

Fig. 5 is a schematic cross-sectional view A-A of a conductivity probe-based dual-axis inclination sensor of the present invention.

FIG. 6 is a schematic diagram of a part gland of a dual-axis inclination sensor based on a conductivity probe according to the present invention.

In the figure: waterproof connector 1; 2-top cover; 3-circuit board; 4-fixing screw; 5-circuit compartment; 6-circuit seat; 7-fourth O-ring; 8-temperature seat; 9-third O Type ring; 10-gland; 11-first rubber ring; 12-second O-ring; 13-first O-ring; 14-second rubber ring; probe 15; 16-base; 17-solution; 18-conductivity tank; 19-slotted bolt; 20-sealing seat; 21-temperature probe; 22-nut; 23-fixing plate; 24-fixing bolt; 25-fifth O-ring; 26-gasket; 27 -cable.

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Figure 1, Figure 2 and Figure 3, the front view, top view, and A-A cross-sectional schematic diagram of a dual-axis inclination sensor based on a conductance probe provided by an embodiment of the present invention, a dual-axis inclination sensor based on a conductance probe , including waterproof connector 1, top cover 2, circuit board 3, fixing screw 4, circuit compartment 5, circuit seat 6, fourth O-ring 7, temperature seat 8, third O-ring 9, gland 10, multiple A first rubber ring 11, a second O-ring 12, a first O-ring 13, a plurality of second rubber rings 14, a plurality of probes 15, a base 16, a solution 17, a conductive liquid chamber 18, slotted bolts 19, Seal seat 20 , temperature probe 21 , nut 22 , fixing plate 23 , fixing bolt 24 , fifth O-ring 25 , gasket 26 and cable 27 .

The upper part of the base 16 is processed with three-level grooves, wherein a plurality of blind holes are processed in the third-level grooves, and each second rubber ring 14 is inserted into the third-level grooves of the base 16 through interference fit. In the blind hole of the second rubber ring 14, a through hole is processed in the middle of each second rubber ring 14, and the bottoms of a plurality of probes 15 are inserted into the corresponding through holes in the middle of the second rubber ring 14 through interference fit and contact with the base 16.

The first O-ring 13 is placed in the first-level groove of the base 16, the second-level groove of the base 16 is processed with threads, and the lower part of the conductive liquid tank 18 is screwed into the second-level groove of the base 16 by threads And press the first O-ring 13 for sealing.

The second O-ring 12 is placed in the upper groove of the conductive liquid tank 18, and the upper groove of the conductive liquid tank 18 is processed with threads, and the lower part of the sealing seat 20 is connected with the upper groove of the conductive liquid tank 18 through threads. Compress the second O-ring 12 to seal.

The top of the sealing seat 20 is processed with a three-level groove, wherein a plurality of stepped through holes corresponding to the blind holes in the third-level groove of the base 16 are processed in the third-level groove, and each of the first rubber The rings 11 are respectively placed into the stepped through holes; the bottom of the gland 10 is processed with a plurality of bosses corresponding to the stepped through holes in the third-level groove on the top of the sealing seat 20, and a through hole is provided in the middle of each boss. hole; the gland 10 is placed in the third-level groove at the top of the seal seat 20 and ensures that each boss at the bottom of the gland 10 is in contact with each corresponding first rubber ring 11; thus the top of each probe 15 Pass through the through holes of the sealing seat 20 , the first rubber ring 11 and the gland 10 in sequence.

The middle part of the upper end of the gland 10 is processed with a through hole, and the slotted bolt 19 passes through the through hole on the gland 10 and is screwed into the sealing seat 20 by threads, and at the same time, each first rubber ring 11 will be squeezed to produce a radial diameter. The probe 15 in the first rubber ring 11 is tightly deformed to seal, thereby forming a closed space in the conductive liquid compartment 18; the solution 17 is contained in the closed space of the conductive liquid compartment 18.

A third O-ring 9 is placed in the first-level groove at the upper end of the sealing seat 20, and the second-level groove at the upper end of the sealing seat 20 is processed with threads, and the lower end of the temperature seat 8 is connected to the sealing seat 20 through threads. Compress the third O-ring 9 for sealing.

A fourth O-ring 7 is placed in the groove at the upper end of the temperature seat 8 , and the lower end of the circuit compartment 5 is connected to the upper end of the temperature seat 8 through threads while pressing the fourth O-ring 7 to seal. A threaded through hole is processed in the middle of the temperature seat 8, and the temperature probe 21 is screwed into the threaded through hole through threads.

The upper end of the circuit compartment 5 is processed with a three-level groove, and the circuit seat 6 is screwed into the third-level groove of the circuit compartment 5 through threads. The circuit seat 6 is processed with a through hole, and the fixing plate 23 is placed on the circuit seat 6. The fixing bolts 24 pass through the through holes on the fixing plate 23 and the circuit base 6 in turn, and then connect with the nuts 22 , so as to fix the fixing plate 23 on the circuit base 6 .

The upper end of the fixed plate 23 is processed with a threaded through hole, the circuit board 3 is placed on the top of the fixed plate 23, and the fixing screw 4 is screwed into the threaded through hole on the fixed plate 23 after passing through the through hole on the circuit board 3, so as to connect the circuit The plate 3 is fixed on the fixed plate 23 .

The fifth O-ring 25 is placed in the first-level groove at the upper end of the circuit compartment 5, and the fifth O-ring 25 is pressed tightly while the lower end of the top cover 2 is connected to the second-level groove at the upper end of the circuit compartment 5 through threads. seal.

The top cover 2 is processed with a stepped through hole, and the gasket 26 is placed in the stepped through hole. The cable 27 passes through the gasket 26 and the through hole of the waterproof joint 1 in turn to reach the outside of the sensor, and the bottom of the waterproof joint 1 is threaded. When entering the top cover 2 stepped through holes, the cable 27 is tightly hugged for sealing.

A schematic diagram of a part gland 10 of a biaxial inclination sensor based on a conductivity probe according to the present invention is shown in FIG. 4 . The number of probes 15 is 8, and the number of bosses of the part gland 10 is also 8.

The output data of described probe 15 and temperature probe 21 all input circuit board 3 (connection line is not drawn in the figure), and circuit board 3 draws double after processing probe 15 and temperature output data by circuit board 3 The angle of inclination of the axis is obtained after processing, and the inclination angle of the biaxial is output through the cable 27.

Please refer to Fig. 5, a kind of biaxial inclination sensor measuring axis schematic diagram based on the conductance probe of the embodiment of the present invention, set up the Cartesian coordinate system with the position of the sensor developed by the present invention, then the sensor developed by the present invention can be compared to Fig. The inclination angles in the directions shown in the x-axis and y-axis are measured.

Please refer to FIG. 6 , a schematic diagram of the working principle of a dual-axis inclination sensor based on a conductance probe in the present invention. The closed space of the conductance liquid tank 18 is equipped with a solution 17. At this time, the negative pole of the inner wall of the conductance liquid tank 18 is passed through a direct current. Give the positive electrode of the direct current to the probe 15. Since the conductivity of the solution 17 is not 0, a current loop is formed between the probe 15, the solution 17 and the inner wall of the conductivity liquid chamber 18, and each probe 15 can form a current loop, and the magnitude of the current in the current loop is proportional to the depth of the probe 15 immersed in the solution 17 . When the sensor is placed horizontally at this time (please refer to Figure a in Figure 6), the depth Δh of each probe 15 immersed in the solution 17 is equal to Δh, since the depth Δh of each probe 15 immersed in the solution 17 is equal, so 1 #Probe 15, 2# Probe 15....N# Probe 15 circuits have equal currents; when the sensor is inclined arbitrarily in the direction of the x-axis or y-axis in Figure 5, each probe 15 is immersed in the solution The height of 17 will change (please refer to Figure ₆ b). _2. △h ₃ ... △h _N ; Since △h ₁ , △h ₂ , △h ₃ ... △h _N are different, 1# probe 15, 2# probe The current in the needle 15....N# probe 15 circuit is not equal, and there is a unique correspondence between the inclination angle of the sensor around the two axes, the current value of each probe 15 and the combination of all probe 15 current values. According to this principle, a dual-axis inclination sensor can be made.

In this article, the orientation words such as front, rear, upper, and lower involved are defined by the parts in the drawings and the positions between the parts in the drawings, just for the clarity and convenience of expressing the technical solution. It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

In the case of no conflict, the above-mentioned embodiments and features in the embodiments herein may be combined with each other.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (6)

1. A dual-axis inclination sensor based on a conductivity probe, characterized in that: it comprises a gland, a plurality of probes, a base, a solution, a conductivity liquid tank, a slotted bolt and a sealing seat, and the top of the base is provided with three Level grooves, wherein a plurality of blind holes are arranged in the third level grooves, and a second rubber ring is installed in each of the blind holes with an interference fit, and a through hole is processed in the middle of each second rubber ring, and each probe The bottom of the needle is respectively put into the through hole in the middle part of the corresponding second rubber ring through interference fit and is in contact with the base; the first O-ring is placed in the first-level groove of the base, and the second-level groove of the base The groove is processed with threads, and the lower part of the conductive liquid tank is screwed into the second-level groove of the base through threads and the first O-ring is pressed to seal; the upper groove of the conductive liquid tank is placed with a second O-ring The upper groove of the conductive liquid tank is processed with threads, and the lower part of the sealing seat is connected with the upper groove of the conductive liquid tank through threads, and at the same time, the second O-ring is pressed to seal; the top of the sealing seat is processed with three level groove, wherein the third level groove is processed with a plurality of stepped through holes corresponding to the plurality of blind holes in the third level groove of the base, each step through hole is provided with a first rubber ring, the first There is a through hole in the middle of the rubber ring; the bottom of the gland is processed with a plurality of bosses corresponding to the stepped through holes in the third-level groove on the top of the sealing seat, and a through hole is arranged in the middle of each boss; the gland Place it in the third-level groove on the top of the sealing seat and make the plurality of bosses at the bottom of the gland contact with the plurality of first rubber rings; in this way, the top of each probe passes through the sealing seat, the first rubber ring and the The through hole of the boss of the gland; the middle part of the upper end of the gland is provided with a through hole, and the slotted bolt passes through the through hole on the gland and is screwed into the sealing seat through threads, and at the same time, each first rubber ring will be squeezed, Make it radially deformed, so as to hug and seal the probe in the first rubber ring, thereby forming a closed space in the conductive liquid compartment, and the solution is contained in the closed space of the conductive liquid compartment. 2. A dual-axis inclination sensor based on a conductivity probe according to claim 1, characterized in that: it also includes a temperature seat and a temperature probe, the middle part of the temperature seat is processed with a threaded through hole, and the temperature probe is screwed in In the threaded through hole; the lower end of the temperature seat is fixed on the secondary groove at the upper end of the sealing seat by threads; a third O-shaped seal for sealing is provided between the temperature seat and the primary groove at the upper end of the sealing seat lock up. 3. A kind of biaxial inclination sensor based on conductivity probe according to claim 1, characterized in that: it also includes a circuit board, a fixed plate, a circuit seat and a circuit compartment; the lower end of the circuit compartment is connected to the upper end of the temperature seat through threads A fourth O-ring for sealing is placed between the circuit compartment and the groove at the upper end of the temperature seat. The upper end of the circuit compartment is processed with a third-level groove, and the circuit seat is screwed into the third-level groove of the circuit compartment by threads. Inside; the fixed plate and the circuit seat are provided with corresponding through holes, and the fixing bolts pass through the through holes on the fixed plate and the circuit seat in turn to connect with the nuts, thereby fixing the fixed plate on the circuit seat; the circuit The plate is fixed on the top of the fixed plate by fixing screws. 4. A dual-axis inclination sensor based on a conductance probe according to claim 1, characterized in that: it also includes a top cover, a waterproof joint and a cable, the lower end of the top cover is threaded into the second-level recess on the upper end of the circuit compartment. Groove connection, a fifth O-ring for sealing is provided between the lower end of the top cover and the first-level groove at the upper end of the circuit compartment; a stepped through hole is processed on the top cover, and a gasket is placed in the stepped through hole, and the cables are in turn After passing through the through hole of the gasket and the waterproof connector, it is connected to the circuit board, and the lower part of the waterproof connector is screwed into the stepped through hole of the top cover through threads, and at the same time, the cable is tightly hugged for sealing. 5 . The dual-axis inclination sensor based on conductivity probes according to claim 1 , wherein the number of said probes is 8. 6 . 6. A dual-axis inclination sensor based on a conductance probe according to claim 1, characterized in that: the output data of the probe and the temperature probe are all input into the circuit board, and the probe and temperature are output through the circuit board The data is processed to obtain the inclination angle of the two axes.