CN114563036B - Graphene sensor application system for 3D printing geotechnical engineering multi-parameter monitoring - Google Patents
Graphene sensor application system for 3D printing geotechnical engineering multi-parameter monitoring Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a graphene sensor application system for multi-parameter monitoring of 3D printing geotechnical engineering, which specifically comprises an inclination angle sensor, an underground water level sensor, a soil pressure sensor, a soil body layered settlement sensor and a signal acquisition and processing system; the inclination angle sensor is used for fixedly monitoring the inclination angle of a building or a soil body; the underground water level sensor is used for monitoring the underground water level; the soil pressure sensor is used for monitoring soil pressure; the soil body layered settlement sensor is buried and used for monitoring soil body layered settlement; the signal acquisition and processing system is used for receiving the inclination angle monitoring data, the ground water level monitoring data, the soil pressure monitoring data and the soil body layered settlement data and transmitting the data to a terminal display of the signal acquisition and processing system. The graphene sensor technology and the 3D printing technology are combined, so that the graphene sensor is simple to manufacture, economical and practical.
Description
Technical Field
The invention relates to the field of 3D printing and graphene sensors, in particular to a graphene sensor application system for multi-parameter monitoring of 3D printing geotechnical engineering.
Background
At present, the graphene sensor technology is a development direction with great challenges and potential, and has wide development prospects in the fields of intelligent buildings, aerospace and the like. Compared with the traditional metal or semiconductor material, the graphene material has the advantages of high brittleness, easy damage and the like, has good flexibility and high sensitivity, is easy to process, and is an ideal material for preparing the sensor.
3D printing is an emerging additive manufacturing technology, has the characteristic of rapid forming, can overcome the defects of complex processing, long manufacturing period and high cost of the traditional manufacturing method, and has higher printing precision.
The construction of the infrastructure in China rapidly develops, the manual periodic inspection is high in cost and potential safety hazard is huge, a sensor capable of simultaneously measuring the dip angle, the underground water level, the soil pressure and the soil mass layered settlement is urgently needed, and particularly, how to monitor the soil mass layered settlement is an engineering problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a graphene sensor application system for multi-parameter monitoring of 3D printing geotechnical engineering, so that the problems in the prior art are solved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a graphene sensor application system for multi-parameter monitoring of 3D printing geotechnical engineering comprises an inclination angle sensor, an underground water level sensor, a soil pressure sensor, a soil mass layered settlement sensor, a signal acquisition processing system and a terminal display;
the inclination sensor is used for monitoring the inclination of a building or soil body and transmitting inclination monitoring data to the signal acquisition and processing system; the underground water level sensor is used for monitoring the underground water level and transmitting underground water level monitoring data to the signal acquisition and processing system; the soil pressure sensor is used for monitoring soil pressure and transmitting soil pressure monitoring data to the signal acquisition and processing system; the soil body layered settlement sensor is used for monitoring soil body layered settlement and transmitting soil body layered settlement monitoring data to the signal processing system;
the signal acquisition and processing system processes the received inclination angle monitoring data, ground water level monitoring data, soil pressure monitoring data and soil body layered settlement data and transmits the processed data to the terminal display.
Preferably, the inclination angle sensor comprises a sliding block, two first springs, two first graphene sensors, a shell, four first dowel bars and two sensor fixing columns;
the sliding block is slidably connected to the middle of the inside of the shell, two ends of each first spring are respectively connected with a first dowel bar, one end of each first spring is connected with the sliding block through the first dowel bars, the other end of each first spring is connected with a first graphene sensor through another first dowel bars, and the first graphene sensor is fixedly connected to the inner wall of the shell through a sensor fixing column.
Preferably, the shell of the inclination sensor, the first dowel bar, the first graphene sensor and the sensor fixing column are formed by 3D printing.
Preferably, the groundwater level sensor comprises a box body, a permeable stone, a flexible material, a graphene sheet and an electrode; the box body one side is open structure and fixed connection permeable stone, the flexible material of inner chamber fixed connection of box body, graphite alkene thin slice fixed connection is on flexible material, graphite alkene thin slice end is connected with the electrode.
Preferably, the box body is formed by 3D printing.
Preferably, the soil pressure sensor comprises a third graphene sensor, two third springs, two struts, two discs, a waterproof flexible membrane and an outer box;
the outer box mid-mounting has the third graphite alkene sensor, third graphite alkene sensor both ends are fixed connection third spring respectively, the third spring is kept away from the one end fixed connection disc of third graphite alkene sensor, the overhanging portion of branch sets up waterproof flexible membrane with outer box junction.
Preferably, the soil body layered settlement sensor comprises a shell, a sliding chute, a second dowel bar, a carbon fiber tube, two second springs, two second graphene sensors, a flexible film and a mounting column;
the shell is characterized in that a sliding groove is formed in one side of the shell, the second dowel bar extends outwards from the sliding groove, a carbon fiber tube is arranged on the second dowel bar, two sides of the second dowel bar extending into the shell are respectively connected with a second spring, the other end of the second spring is connected to a second graphene sensor through the second dowel bar, and the flexible film is fixed in the sliding groove.
The device provided by the invention overcomes the defects of the prior art, combines the 3D printing technology with the graphene sensor technology, and has the advantages of short manufacturing period, simple manufacturing flow and low cost through 3D printing; meanwhile, the graphene sensor has the advantages of high sensitivity, strong anti-interference capability, excellent measurement performance and low power consumption.
After one of the measuring devices is pushed out of the arc-shaped box through the electric push rod, the two inclination angle sensors are unfolded and attached to the wall body and the ground, the two inclination angle sensors correspond to the through holes formed when the round rod enters, the clamping blocks are pushed into the avoidance holes, the insertion plates are inserted into the slots under the action of the push-out springs, the electric push rod is retracted after the first one is put in, and the next measuring device is moved to the push-out position under the action of the support springs, so that the electric push rod is convenient to put in and install at other positions.
Drawings
FIG. 1 is a block diagram of the system components of the present invention;
FIG. 2 is a schematic diagram of the tilt sensor according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a groundwater level sensor according to embodiment 2 of the present invention;
FIG. 4 is a schematic diagram of a method for connecting and fixing a groundwater level sensor according to embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of a soil mass layered settlement sensor provided in embodiment 3 of the present invention;
FIG. 6 is a schematic diagram of a method for connecting and fixing a soil stratified settlement sensor according to embodiment 3 of the present invention;
FIG. 7 is a schematic view showing the structure of a soil pressure sensor according to embodiment 4 of the present invention;
FIG. 8 is a schematic view of the structure of the dispensing device of the present invention;
FIG. 9 is a schematic view of the use of the delivery device of the present invention;
FIG. 10 is an enlarged schematic view of the structure of FIG. 9 at E;
fig. 11 is an enlarged schematic view of the structure at F in fig. 10.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1-7, the invention discloses a graphene sensor application system for multi-parameter monitoring of 3D printing geotechnical engineering, which comprises an inclination sensor 1, a groundwater level sensor 2, a soil pressure sensor 4, a soil mass layered settlement sensor 3 and a signal acquisition and processing system 10;
the inclination sensor 1 is fixed on a building or buried in soil and is used for monitoring the inclination of the building or the soil and transmitting inclination monitoring data to the signal acquisition and processing system 10; the ground water level sensor 2 is buried in the soil body and is used for monitoring the ground water level and transmitting ground water level monitoring data to the signal acquisition and processing system 10; the soil pressure sensor 4 is buried in soil and is used for monitoring soil pressure and transmitting soil pressure monitoring data to the signal acquisition and processing system 10; the soil body layered settlement sensor 3 is buried in the soil body and is used for monitoring the layered settlement of the soil body and transmitting the monitoring data of the layered settlement of the soil body to the signal processing system 10; the signal acquisition and processing system 10 processes the received inclination angle monitoring data, ground water level monitoring data, soil pressure monitoring data and soil layered settlement data and transmits the processed data to a terminal display.
As shown in fig. 2, the tilt sensor 1 includes a slider 11, two first springs 12, two first graphene sensors 13, a housing 14, four first dowel bars 15, and two sensor fixing columns 16.
The slider 11 sliding connection is in the inside middle part of casing 14, and slider 11 can freely roll in casing 14, and a first dowel bar 15 is connected respectively at every first spring 12 both ends, and first spring 12 one end is connected with slider 11 through first dowel bar 15, and first spring 12 other end is connected with first graphite alkene sensor 13 through another first dowel bar 15, and first graphite alkene sensor 13 passes through sensor fixed column 16 fixed connection at casing 14 inner wall.
The housing 14, the first dowel bar 15, the first graphene sensor 13 and the sensor fixing column 16 of the inclination sensor 1 are formed by 3D printing.
The first graphene sensor 13 comprises a graphene sheet, the graphene sheet is encapsulated by flexible material PDMS, a graphene sheet electrode is arranged at one end away from the first dowel bar 15 and is connected with the electrode by a wire, and the other end of the wire passes through a power connector of the encapsulation box and is connected to the shell 14; the sliding block 11 slides along with the rotation of a soil body or a building, and then force is transmitted to the first graphene sensor 13, so that the first graphene sensor is subjected to tension-compression deformation, and the change of the angle is measured through the change of the graphene resistance.
Monitoring of inclination angle: the inclination angle sensors 1 are installed on two adjacent sides of the signal acquisition and processing system 10, one inclination angle sensor 1 is horizontally placed, the other inclination angle sensor 2 is vertically placed, and the placing angles are different, so that inclination angles in different directions can be measured.
The inclination sensor 1 is buried in a soil body to be measured or fixed on the surface of a building to be measured, and the building to be measured comprises various piles, walls, slopes and the like by way of example. When soil or a building tilts, the embedded or fixed tilt sensor tilts along with the tilt, the force transmitted by the sliding block 11, the first spring 12 and the first dowel bar 15 to the first graphene sensor 13 changes along with the angle, and the sliding block 11 in the tilt sensor 1 horizontally placed along with the angle theta 1 Variation in force transmitted to the first graphene sensor 13: ΔF (delta F) 1 In the formula, m is the mass of the sliding block 11, g is the gravitational acceleration, and the sliding block 11 in the vertically placed inclination sensor 1 follows the angle theta 2 The change value of the force transmitted to the first graphene sensor 13 is Δf 2 ＝mg(1-cosθ 2 ). Transmitting the electric signal to signal acquisition and processingThe system 10 processes the electrical signals through the signal acquisition and processing system 10 to obtain the rotation angle of the soil body or the building around two orthogonal axes parallel to the ground.
Further, in order to eliminate the influence of temperature variation on the first graphene sensor 13, the first graphene sensors 13 are arranged at two ends of each tilt sensor 1, so that temperature self-compensation can be realized:
ΔX t ＝alΔT+ΔX 1 ,ΔX c ＝alΔT-ΔX 1
wherein: ΔX t For graphene deformation to one side of tension ΔX c Graphene deformation at the pressed side, Δx 1 The deformation of the graphene due to tension or pressure is represented by a linear expansion coefficient, l is the length of the graphene, and delta T is the temperature variation. By subtracting the two formulas, namely comparing the resistance changes of the two graphenes, the data error caused by the deformation of the graphenes due to the temperature change can be eliminated, and the temperature self-compensation is realized.
Example 2
As shown in fig. 3, in order to realize the monitoring of the groundwater level, the groundwater level sensor 2 of embodiment 1 includes a case 21, a water permeable stone 22, a flexible material 23, a graphene sheet 24, and an electrode 25; one side of the box body 21 is of an open structure and is fixedly connected with the permeable stone 22 and is formed by 3D printing, the inner cavity of the box body 21 is fixedly connected with the flexible material 23, the graphene sheet 24 is fixedly connected on the flexible material 23, and the end head of the graphene sheet 2 is connected with the electrode 25.
The ground water level sensor 2 is buried in soil or one end is fixed on a building, the water level rises to the position of the permeable stone 22, the flexible material 23 is pressed by the water pressure of the inner cavity 211 of the permeable stone 22 entering the box body 21, the graphene sheet 24 deforms along with the flexible material 23, and the electric signal is transmitted to the signal acquisition and processing system 10 through the electrode 25, so that the ground water level can be monitored in real time and early warned, and the safety and reliability of the building are ensured.
Further, in order to expand the range of monitoring the groundwater level, as shown in fig. 4, a plurality of groundwater level sensors 2 may be connected at the head, and the number of groundwater level monitoring devices used may be increased or decreased according to the requirement of the monitoring depth. In order to eliminate the influence of soil settlement and the like, when the underground water level is monitored by directly burying the soil, as shown in fig. 4, a long fixing pipe 26 can be extended, the tail end of the fixing pipe is fixed on a firm bedrock 27, and the underground water level sensor 2 is fixed on the fixing pipe 26.
Example 3
As shown in fig. 5 to 6, in order to realize monitoring of soil layer layered settlement, the soil layer layered settlement sensor 3 of embodiment 1 includes a housing 31, a chute 32, a second dowel bar 33, a carbon fiber tube 34, two second springs 35, two second graphene sensors 36, a flexible film 37, and a mounting column 38.
Wherein the housing 31, the second dowel 33, and the mounting post 38 are 3D printed.
A sliding groove 32 is formed in one side of the shell 31, a second dowel bar 33 extends into soil from the outside of the sliding groove 32 and is coupled with the soil through a carbon fiber tube 34 arranged on the second dowel bar 33, two sides of the portion, extending into the shell 31, of the second dowel bar 33 are respectively connected with a second spring 35, the other end of the second spring 35 is connected to a second graphene sensor 36 through the second dowel bar 33, a flexible film 37 is fixed in the sliding groove 32, the sliding groove 32 is sealed by the flexible film 37, the second dowel bar 33 penetrates through the flexible film 37, and the flexible film 26 isolates the soil from the inside of the shell 31.
The soil mass layered settlement sensor 3 is buried in the soil mass or buried in the soil mass and fixed to a building, which includes, for example, a bridge, a high-rise building, a railway, and the like.
The second dowel bar 33 of the soil body layered settlement sensor 3 extends into the soil body and is coupled with the soil body through the carbon fiber tube 34, when the soil body is settled, the second dowel bar 33 is driven to slide downwards, the second spring 35 is driven to deform and is transmitted to the second graphene sensors 36 at the two ends, and signals are transmitted to the signal processing system 10.
In order to expand the monitoring range of soil mass layered settlement, as shown in fig. 6, a plurality of soil mass layered settlement sensors 3 may be sequentially connected, and the number of the soil mass layered settlement sensors 3 required may be increased or decreased according to the monitoring requirement. In order to improve the accuracy of monitoring the soil mass layered settlement, the height of the soil mass layered settlement sensor 3 can be reduced. The device directly buried in the soil body can extend into a supporting tube 39, one end of which is fixed on a firm stratum 391, and the soil body layered settlement sensor 3 is fixed on the supporting tube 39 as shown in fig. 6, in order to eliminate the influence of soil body settlement to drive the soil body layered settlement sensor 3 to wholly settle.
Example 4
As shown in fig. 7, in order to realize monitoring of the soil pressure, the soil pressure sensor 4 of embodiment 1 includes a third graphene sensor 41, two third springs 42, two struts 43, two disks 44, a waterproof flexible membrane 45, and an outer case 46.
The outer box 46 mid-mounting has third graphite alkene sensor 41, and third graphite alkene sensor 41 both ends are fixed connection third spring 42 respectively, and third spring 42 is kept away from the one end fixed connection disc 44 of third graphite alkene sensor 41, disc 44 and soil coupling and biography power give branch 43, and the overhanging portion of branch 43 sets up waterproof flexible membrane 45 with outer box 46 junction, and waterproof flexible membrane 45 can isolate soil and water entering outer box 46 in.
Wherein the outer box 46, the support rods 43 and the disc 44 are formed by 3D printing.
The support rod 43 partially stretches into the soil body, the disc 44 is respectively connected with the support rod 43 and is coupled with the soil body, the soil pressure is transmitted to the third graphene sensor 41 through the disc, and the signal is transmitted to the signal processing system 10, so that the soil pressure can be monitored in real time.
The invention can measure the inclination angle of each structure or soil body of a building, the layered settlement of the soil body, the groundwater level and the soil pressure by utilizing the 3D printing technology and the graphene sensor technology. The graphene is strained under the force transmission of the device and the action of water pressure, the resistance of the graphene is changed along with the strain of the graphene, and the purpose of measurement is achieved through the change of an electric signal; the manufacturing process of the device is greatly simplified, the device is assembled by 3D printing one-step molding, the device is convenient and quick, and the cost is saved; meanwhile, graphene has strong anti-interference capability, high sensitivity and low power consumption. Therefore, the multifunctional graphene sensor for 3D printing is high in reliability, economical and practical.
As shown in fig. 2 and 8-11, when detecting the inclination angle of a building, the quick installation is carried out through a throwing device, the throwing device comprises a throwing vehicle 6, one side of the throwing vehicle 6 is fixedly connected with an arc-shaped box 7, a fan-shaped cavity is arranged in the arc-shaped box 7, the inner wall of the arc-shaped box 7 is fixedly connected with a rubber pad 71, a plurality of measuring devices are connected in a sliding manner, each measuring device consists of a signal acquisition processing system 10 and two inclination angle sensors 1, a shell 14 of each inclination angle sensor 1 is rotatably connected with a shell of the signal acquisition processing system 10, a first torsion spring is arranged on a rotating shaft, the two inclination angle sensors 1 of the measuring devices are contracted in the fan-shaped cavity of the arc-shaped box 7, when the inclination angle sensors 1 are separated from the fan-shaped cavity, the first torsion spring enables the two inclination angle sensors 1 to recover to be in a right angle state, the outer cambered surface of the arc-shaped box 7 is fixedly connected with an electric push rod 72, the telescopic rod end of the electric push rod 72 is rotationally connected with two rotating plates 73, a rotary shaft of each rotating plate 73 is provided with a restoring torsion spring, one side of each rotating plate 73 is fixedly connected with a magic tape 74, one side of a shell 14 is fixedly connected with a wool pad 75, the magic tape 74 is matched with the wool pad 75, the bottom of an arc-shaped box 7 is provided with a discharge outlet, the electric push rod 72 extrudes and pushes a measuring device to the corner of a wall body 100, the wall body 100 and the ground 200 are respectively and fixedly connected with a clamping block 8, the end of the shell 14 is provided with a sliding hole, the sliding hole is in sliding connection with a plugboard 141, the plugboard 141 is matched with the clamping block 8, one side of the clamping block 8 is provided with a slot 81, one side of the clamping block 8 is fixedly connected with a round rod 82, one side of the shell 14 is provided with a through hole 142, a push spring 143 is fixedly connected between the plugboard 141 and the sliding hole, one side of the plugboard 141 is provided with a dodging hole 144, a clamping block 145 is in the dodging hole 144, and the clamping block 145 is clamped in the through hole 142, an elastic gasket 146 is arranged between the clamping block 145 and the bottom of the avoidance hole 144.
Further, one side of the inner wall of the arc-shaped box 7 is fixedly connected with two sleeves 9, each sleeve 9 is internally provided with a supporting spring, the inner cavity of the arc-shaped box 7 is slidably connected with a push plate 91, and the push plate 91 is contacted with a measuring device at the most edge.
Put in the principle, electric putter 72 releases arc case 7 with one of them measuring device, after measuring device breaks away from arc case 7, two inclination sensors 1 expand and paste wall body 100 and ground 200, corresponding when round bar 82 gets into through-hole 142, push fixture block 145 into dodge downthehole 144, under the effect of release spring 143, picture peg 141 inserts in slot 81, to making quick the throwing, behind the first of throwing, electric putter 72 is retracted, under support spring's effect, next measuring device moves to the release position, thereby be convenient for other positions put in the installation.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The graphene sensor application system for 3D printing geotechnical engineering multi-parameter monitoring is characterized by comprising an inclination sensor (1), an underground water level sensor (2), a soil pressure sensor (4), a soil layering sedimentation sensor (3), a signal acquisition processing system (10) and a terminal display;
the inclination sensor (1) is used for monitoring the inclination of a building or a soil body and transmitting inclination monitoring data to the signal acquisition and processing system (10); the underground water level sensor (2) is used for monitoring the underground water level and transmitting underground water level monitoring data to the signal acquisition and processing system (10); the soil pressure sensor (4) is used for monitoring soil pressure and transmitting soil pressure monitoring data to the signal acquisition and processing system (10); the soil body layered settlement sensor (3) is used for monitoring soil body layered settlement and transmitting soil body layered settlement monitoring data to the signal acquisition and processing system (10);
the signal acquisition and processing system (10) processes the received inclination angle monitoring data, ground water level monitoring data, soil pressure monitoring data and soil layering sedimentation data and transmits the processed data to the terminal display;
when detecting the dip angle of a building, quick installation is carried out through the throwing device, the throwing device comprises a throwing vehicle, one side of the throwing vehicle is fixedly connected with an arc-shaped box, a fan-shaped cavity is formed in the arc-shaped box, an inner wall is fixedly connected with a rubber pad, a plurality of measuring devices are connected in a sliding mode in the arc-shaped box, each measuring device is composed of a signal acquisition processing system and two dip angle sensors, a shell of each dip angle sensor is in rotary connection with a shell of the signal acquisition processing system, a first torsion spring is arranged on a rotating shaft, the two dip angle sensors of the measuring devices are contracted in the fan-shaped cavity of the arc-shaped box, when the dip angle sensors are separated from the fan-shaped cavity, the first torsion spring enables the two dip angle sensors to be restored to a right-angle state, an arc-shaped box outer cambered surface is fixedly connected with an electric push rod, a telescopic rod end of the electric push rod is in rotary connection with two rotary plates, the rotating plate is provided with a rotary spring, one side of each rotary plate is fixedly connected with a magic tape, the magic tape is matched with the plush pad, the arc-shaped box bottom is provided with a discharge outlet, the measuring device is extruded towards a wall, corners and the ground are fixedly connected with a clamping block, the end of the shell is provided with a clamping block, and one side of the clamping block is matched with the clamping block is in a sliding block is matched with the clamping block, and one side of the clamping block is provided with one side of the clamping block.
The inclination angle sensor (1) comprises a sliding block (11), two first springs (12), two first graphene sensors (13), a shell (14), four first dowel bars (15) and two sensor fixing columns (16);
the sliding block (11) is slidably connected to the middle part of the inside of the shell (14), two ends of each first spring (12) are respectively connected with a first dowel bar (15), one end of each first spring (12) is connected with the sliding block (11) through the first dowel bar (15), the other end of each first spring (12) is connected with the first graphene sensor (13) through the other first dowel bar (15), and the first graphene sensor (13) is fixedly connected to the inner wall of the shell (14) through the sensor fixing column (16);
the sensor comprises a shell (14) of the inclination sensor (1), a first dowel bar (15), a first graphene sensor (13) and a sensor fixing column (16), wherein the sensor fixing column (16) is formed by 3D printing.
2. The graphene sensor application system for 3D printed geotechnical engineering multiparameter monitoring according to claim 1, wherein the groundwater level sensor (2) comprises a box body (21), a permeable stone (22), a flexible material (23), graphene sheets (24) and electrodes (25); one side of the box body (21) is of an open structure and is fixedly connected with a permeable stone (22), the inner cavity of the box body (21) is fixedly connected with a flexible material (23), the graphene sheet (24) is fixedly connected to the flexible material (23), and the end of the graphene sheet (24) is connected with an electrode (25).
3. The graphene sensor application system for multi-parameter monitoring of 3D printed geotechnical engineering according to claim 2, wherein the box body (21) is formed by 3D printing.
4. A graphene sensor application system for 3D printed geotechnical engineering multi-parameter monitoring according to claim 1, the soil pressure sensor (4) comprising a third graphene sensor (41), two third springs (42), two struts (43), two discs (44), a waterproof flexible membrane (45) and an outer box (46);
the outer box (46) mid-mounting has third graphite alkene sensor (41), third graphite alkene sensor (41) both ends are fixed connection third spring (42) respectively, third spring (42) are kept away from one end fixed connection disc (44) of third graphite alkene sensor (41), the overhanging portion of branch (43) sets up waterproof flexible membrane (45) with outer box (46) junction.
5. A graphene sensor application system for 3D printed geotechnical engineering multi-parameter monitoring according to claim 1, wherein the soil body layered settlement sensor (3) comprises a shell (31), a chute (32), a second dowel bar (33), a carbon fiber tube (34), two second springs (35), two second graphene sensors (36), a flexible film (37) and a mounting column (38);
the shell (31) one side sets up spout (32), second dowel steel (33) are by spout (32) overhanging, carbon fiber tube (34) that set up on second dowel steel (33), a second spring (35) are connected respectively to the both sides that second dowel steel (33) stretched into shell (31) part, the other end of second spring (35) is connected on second graphite alkene sensor (36) through second dowel steel (33), flexible film (37) are fixed in spout (32).
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