CN218270576U

CN218270576U - Novel crack displacement sensor

Info

Publication number: CN218270576U
Application number: CN202222344265.6U
Authority: CN
Inventors: 秦宗皇
Original assignee: Suzhou Yikelong Electronic Instrument Co ltd
Current assignee: Suzhou Yikelong Electronic Instrument Co ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-01-10
Anticipated expiration: 2032-09-02

Abstract

The utility model discloses a novel crack displacement sensor, including the air spring, the air spring includes the thick stick cover and installs on the thick stick cover and with the flexible sliding connection's of thick stick cover polished rod, the one end that the thick stick cover is close to the polished rod is provided with the mounting base, be provided with the installation piece on the mounting base, be provided with the electric capacity bars sensor that is used for detecting displacement distance on the mounting piece, the bottom of mounting base is provided with the circuit board, the circuit board with electric capacity bars sensor electric connection, integrated communication unit and temperature and humidity detection module on the circuit board. The utility model discloses in when the polished rod slides along the thick stick cover, can drive the electric capacity chi and slide along electric capacity bars sensor, electric capacity bars sensor can read the scale change on the electric capacity chi to can record fissured dimensional change, and turn into the signal of telecommunication with displacement data, upload control terminal, the built-in power supply that the inside of sensor set up can guarantee that the sensor lasts stable work.

Description

Novel crack displacement sensor

Technical Field

The utility model relates to a crack displacement check out test set technical field, especially a novel crack displacement sensor.

Background

When an earthquake occurs, buildings in the area are generally seriously damaged, the buildings are broken or broken and expanded at any time, then walls collapse, a large number of cracks can be generated on a road, the safety of search and rescue workers is greatly threatened, in order to guarantee the safety of the search and rescue workers, the cracks of the buildings need to be detected before ruin search and rescue, and once the cracks are expanded, the danger of collapse exists, an alarm is given in time, so that the safety of the search and rescue workers is guaranteed.

At present, the main seam measuring mode mainly comprises the steps of filler gauge visual measurement, image display manual interpretation, electron microscope measurement and the like, the detection precision of the above mode cannot be guaranteed, manual measurement errors exist, a seam cannot be monitored for a long time, and therefore the size change condition of the seam cannot be mastered in real time by rescuers, certain safety risks exist, and therefore a novel seam displacement sensor needs to be researched and developed, and the change condition of the seam is monitored in real time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a novel crack displacement sensor is designed.

The technical scheme of the utility model is that, a novel crack displacement sensor, including the air spring, the air spring includes the thick stick cover and installs on the thick stick cover and with the flexible sliding connection's of thick stick cover polished rod, the thick stick cover is close to the one end of polished rod and is provided with the mounting base, be provided with the installation piece on the mounting base, be provided with the electric capacity bars sensor that is used for detecting displacement distance on the mounting piece, the bottom of mounting base is provided with the circuit board, the circuit board with electric capacity bars sensor electric connection, integrated communication unit and temperature and humidity detection module on the circuit board;

the one end that the thick stick cover was kept away from to the polished rod is provided with movable base, be provided with briquetting and electric capacity chi on the movable base, the one end of electric capacity chi is passed through the briquetting and is fixed on the movable base, and the other end passes electric capacity bars sensor to with electric capacity bars sensor sliding connection, mark the scale that has the precision to reach 0.01 millimeter on the electric capacity chi, when the electric capacity chi slides for electric capacity bars sensor, through electric capacity bars sensor reads the scale on the electric capacity chi to detect crack displacement sensor's displacement distance.

As a further explanation of the utility model, the inboard of thick stick cover tip is provided with thick stick head stopper, the inside of thick stick cover is provided with the piston, the one end of polished rod is passed thick stick head stopper and is stretched into inside the thick stick cover, with piston fixed connection.

As the utility model discloses a further explanation, movable base's both sides all are provided with the bearing, two bearings are passed in proper order to the one end of polished rod to with two bearing swing joint, the outside that lies in two bearings on the polished rod all is provided with the retaining ring that is used for fixing bearing.

As the utility model discloses a further explanation, the polished rod keep away from the one end of thick stick cover and the one end that the polished rod was kept away from to the thick stick cover all is provided with the conversion terminal, fixes crack displacement sensor's both ends on waiting to detect the crack both sides inner wall through two conversion terminals.

As a further explanation of the utility model, be provided with stand-by power supply in the mounting base, stand-by power supply respectively with electric capacity bars sensor and circuit board electric connection, when crack displacement sensor's external power source outage, supply power for electric capacity bars sensor and circuit board through stand-by power supply.

As a further explanation of the present invention, the crack displacement sensor, when in use, comprises the following system modules: 485 bus link, power, main control unit, gateway upload module and high in the clouds server, wherein a plurality of crack displacement sensor series connection back through 485 bus link with main control unit connects, main control unit respectively with the power with the gateway uploads the module and connects, the gateway upload the module with high in the clouds server communication connection.

As a further explanation of the utility model, install be provided with movable bucket on the conversion terminal on the polished rod, install be provided with fixed bucket on the conversion terminal on the thick rod cover, just movable bucket can slide for fixed bucket under the drive of polished rod.

The beneficial effects are that: the utility model discloses in when the polished rod slides along the thick stick cover, can drive the electric capacity chi and slide along electric capacity bars sensor, electric capacity bars sensor can read the scale change on the electric capacity chi to can record fissured dimensional change, and turn into the signal of telecommunication with displacement data, upload control terminal, and still be provided with built-in power at the inside of sensor, can guarantee that the power of sensor is stable, consequently can do the real-time supervision to the fracture.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic sectional structure of the present invention;

fig. 4 is a system block diagram of the installation of the middle crack displacement sensor of the present invention.

In the figure, 1, a movable barrel; 2. fixing the barrel; 3. a conversion terminal; 4. a lever sleeve; 5. a polish rod; 6. mounting a base; 7. a circuit board; 8. mounting a sheet; 9. a capacitive gate sensor; 10. a capacitance ruler; 11. A lever head plug; 12. a movable base; 13. briquetting; 14. a retainer ring; 15. a bearing; 16. a piston.

Detailed Description

First explain the utility model discloses a research and development initiatives, because the monitoring of present fracture all adopts methods such as clearance gauge range estimation, image display manual interpretation and electron microscope measurement to detect usually, these three kinds of modes all can't accomplish to carry out real-time supervision to the fracture, in case the fracture has the risk of expanding, will probably lead to catastrophic consequence, consequently in order to solve above-mentioned problem, the utility model provides a novel crack displacement sensor can be applied to fields such as underground pipe gallery, stair building, bridge, massif, iron tower to can link to each other with the thing networking, carry out real time monitoring to fissured dimensional change.

The present invention is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 3, the crack displacement sensor mainly includes several modules, such as an air spring, a capacitance ruler 10, a capacitance grid sensor 9, and a circuit board 7, wherein the air spring includes a lever sleeve 4 and a polish rod 5 installed on the lever sleeve 4 and telescopically and slidably connected with the lever sleeve 4, a lever head plug 11 is disposed inside an end of the lever sleeve 4, a piston 16 is further disposed inside the lever sleeve 4, one end of the polish rod 5 passes through the lever head plug 11 and extends into the lever sleeve 4, and is fixedly connected with the piston 16, and when the polish rod 5 moves, the piston 16 can be driven to move; the measuring device is characterized in that a mounting base 6 is arranged at one end, close to the polished rod 5, of the lever sleeve 4, a mounting piece 8 is further arranged on the mounting base 6, a capacitance grid sensor 9 used for detecting displacement distance is arranged on the mounting piece 8, a movable base 12 is arranged at one end, far away from the lever sleeve 4, of the polished rod 5, a pressing block 13 and a capacitance ruler 10 are arranged on the movable base 12, one end of the capacitance ruler 10 is fixed on the movable base 12 through the pressing block 13, the other end of the capacitance grid sensor 9 penetrates through the capacitance grid sensor 9 and is in sliding connection with the capacitance grid sensor 9, scales with the precision reaching 0.01 mm are marked on the capacitance ruler 10, when the polished rod 5 slides relative to the lever sleeve 4, the capacitance ruler 10 can be driven to slide relative to the capacitance grid sensor 9, and the scales on the capacitance ruler 10 can be read through the capacitance grid sensor 9, so that the displacement distance of the crack displacement sensor is detected, and the detection precision is higher than that of a traditional displacement sensor and can reach the precision of 0.01 mm.

Be provided with circuit board 7 in the bottom of mounting base 6, wherein circuit board 7 and capacitive grating sensor 9 electric connection, capacitive grating sensor 9 can be with displacement signal conversion electrical signal, then send electrical signal to circuit board 7, and integrated communication unit and temperature and humidity detection module on circuit board 7, the electrical signal can be sent for relevant processing terminal by the communication unit on the circuit board 7, temperature and humidity detection unit can detect the temperature and the humidity information of crack displacement sensor place environment at any time.

Be provided with stand-by power supply in mounting base 6, stand-by power supply respectively with electric capacity bars sensor 9 and circuit board 7 electric connection, under the normal condition, stand-by power supply is inoperative, at this moment is supplied power for crack displacement sensor by external power supply, and when external power supply outage, stand-by power supply is pneumatic, supplies power for electric capacity bars sensor 9 and circuit board 7, guarantees that it can normally work, and stand-by power supply also can guarantee crack displacement sensor work more than two months under the normal condition.

The two sides of the movable base 12 are respectively provided with a bearing 15, one end of the polished rod 5 sequentially penetrates through the two bearings 15 and is movably connected with the two bearings 15, retainer rings 14 for fixing the bearings 15 are respectively arranged on the polished rod 5 and positioned at the outer sides of the two bearings 15, and the two bearings 15 are arranged for preventing the polished rod 5 from moving back and forth along the movable base 12 and ensuring the moving stability of the polished rod 5; conversion terminals 3 are arranged at one end of the polished rod 5, which is far away from the polished rod sleeve 4, and one end of the polished rod sleeve 4, which is far away from the polished rod 5, when the crack displacement sensor is installed, two ends of the two conversion terminals 3 are installed and fixed on inner walls of two sides in a crack to be detected, and when the crack displacement sensor is in actual use, the polished rod 5 can rotate along the polished rod sleeve 4 under the action of torsion force, so that the polished rod 5 can be ensured to rotate freely relative to the movable base 12 by the bearing 15 arranged on the movable base 12, the back and forth movement of the capacitance ruler 10 relative to the capacitance grid sensor 9 can not be influenced, and the moving precision of the capacitance ruler 10 can also be ensured, as shown in fig. 2, the movable barrel 1 is arranged on the conversion terminal 3 arranged on the polished rod 5, the fixed barrel 2 is arranged on the conversion terminal 3 arranged on the polished rod sleeve 4, and the movable barrel 1 can slide relative to the fixed barrel 2 under the driving of the polished rod 5, and structures such as the capacitance grid sensor 9, the circuit board 7 are arranged inside the movable barrel 1 and the fixed barrel 2, so as to protect internal electronic devices from being damaged by external environment.

As shown in fig. 4, when the crack displacement sensor is used, the crack displacement sensor is also used together with the following system modules, so as to realize real-time monitoring of cracks, and the crack displacement sensor comprises modules such as a 485 bus link, a power supply, a main controller, a gateway uploading module and a cloud server, wherein a plurality of crack displacement sensors are connected in series and then connected with the main controller through the 485 bus link, the main controller is respectively connected with the power supply and the gateway uploading module, the gateway uploading module is in communication connection with the cloud server, and in practical application, in order to achieve the purposes of reducing cost and facilitating installation and maintenance, the sensor adopts an RS485 communication interface as a physical transmission layer, uses a 4-core twisted pair shielding wire to combine a fast aviation connector, resists electromagnetic interference, the theoretical farthest communication transmission distance can reach 1Km, and the actual distance can reach 200 meters according to the use environment; the main controller is used as a host, all the crack displacement sensors are used as slaves and are connected through RS485 interfaces, each RS485 bus can be connected with 60 devices at most, if one main controller has 4 RS485 interfaces, 240 monitoring sensors can be connected in the monitoring network at most, and finally a detection network in a range is formed. The RS485 bus adopts a half-duplex master-slave mode with one question and one answer, the baud rate is 9600-115200 and can be adjusted (set), and the critical anti-interference performance between devices is also ensured while the data acquisition speed is ensured.

When the crack displacement sensor is installed and used, two ends of a plurality of crack displacement sensors are sequentially and respectively fixed on two sides of the inner side of a crack to be detected, the crack displacement sensors can automatically detect the size change of the crack, the displacement size is converted into an electric signal, the detected data are packaged and uploaded to a main controller through a 485 bus link, the main controller can set different IDs and addresses (the addresses can be modified through a host, and the ID number of equipment cannot be modified), and when data are transmitted, each group of data carries the address information of the data, so that the data are from different crack displacement sensors; each displacement sensor defines a displacement data register (in a floating point format, positive and negative values can be distinguished), a temperature data register (in a floating point format, positive and negative values can be distinguished), and a humidity data register (in an integer format), and the parameters are read through a '03' instruction of a Modbus; the return-to-zero data register can be endowed with a value of '1' through a '06' instruction, the operation of returning the position value of the crack displacement sensor to zero is completed, then the main controller can arrange and check the data uploaded by each crack displacement sensor, the data are assembled into a data packet (Internet of things format) and sent to the gateway uploading module, the main controller also provides required power supply voltage for each crack displacement sensor, the gateway uploading module receives the data packet from the main controller, the service software can be sent to a QTT (specified IP address, MT Internet of things protocol) cloud server through a 4G or 5G communication module to store the data to a database, and then further data application is performed.

After receiving the data packet sent by the gateway uploading module, the cloud server compares the obtained monitoring data with preset upper and lower limit values in the system, and further judges whether the environment monitored by the crack displacement sensor is in a safe state, once the environment is out of tolerance, the system sends an alarm (the function of service software is that the environment is pushed by telephone, short message, micro message and alarm of a control console), and the system is combined with a dispatcher to call a regional responsible person on site for further judgment and emergency treatment.

Wherein the RS485 bus uses 2 core twisted pairs +2 core power cords to constitute, and the 485 communication line has A to distinguish with B, and the data line periphery has the shielding layer, plays anti-interference purpose, and the interface uses waterproof aviation plug, easy to assemble and maintenance, and 120 ohmic load terminal are installed to the tail end of communication line, prevent the signal reflection among the data transmission process.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical staff probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The novel crack displacement sensor comprises an air spring, wherein the air spring comprises a lever sleeve (4) and a polished rod (5) which is installed on the lever sleeve (4) and is in telescopic sliding connection with the lever sleeve (4), and is characterized in that one end, close to the polished rod (5), of the lever sleeve (4) is provided with a mounting base (6), a mounting sheet (8) is arranged on the mounting base (6), a capacitance grid sensor (9) used for detecting displacement distance is arranged on the mounting sheet (8), a circuit board (7) is arranged at the bottom of the mounting base (6), the circuit board (7) is electrically connected with the capacitance grid sensor (9), and a communication unit and a temperature and humidity detection module are integrated on the circuit board (7);

the one end that lever cover (4) was kept away from in polished rod (5) is provided with movable base (12), be provided with briquetting (13) and electric capacity chi (10) on movable base (12), the one end of electric capacity chi (10) is passed through briquetting (13) and is fixed on movable base (12), and capacitive grating sensor (9) are passed through to the other end to with electric capacity grating sensor (9) sliding connection, the mark has the precision to reach the scale of 0.01 millimeter on electric capacity chi (10), when electric capacity chi (10) slided for electric capacity grating sensor (9), through electric capacity grating sensor (9) read the scale on electric capacity chi (10) to detect the displacement distance of crack displacement sensor.

2. The novel crack displacement sensor as claimed in claim 1, characterized in that a lever head plug (11) is arranged on the inner side of the end of the lever sleeve (4), a piston (16) is arranged inside the lever sleeve (4), and one end of the polish rod (5) passes through the lever head plug (11) and extends into the lever sleeve (4) to be fixedly connected with the piston (16).

3. The novel crack displacement sensor as claimed in claim 1, wherein bearings (15) are arranged on both sides of the movable base (12), one end of the polish rod (5) sequentially passes through the two bearings (15) and is movably connected with the two bearings (15), and a retainer ring (14) for fixing the bearings (15) is arranged on the polish rod (5) and is arranged on the outer side of the two bearings (15).

4. The novel crack displacement sensor according to claim 1, characterized in that the end of the polish rod (5) away from the lever sleeve (4) and the end of the lever sleeve (4) away from the polish rod (5) are provided with conversion terminals (3), and the two ends of the crack displacement sensor are fixed on the inner walls of the two sides in the crack to be detected through the two conversion terminals (3).

5. The novel crack displacement sensor as claimed in claim 1, wherein a backup power supply is arranged in the mounting base (6), the backup power supply is electrically connected with the capacitive grating sensor (9) and the circuit board (7), and when the external power supply of the crack displacement sensor is cut off, the capacitive grating sensor (9) and the circuit board (7) are powered by the backup power supply.

6. The novel crack displacement sensor as claimed in claim 1, wherein a movable barrel (1) is arranged on the conversion terminal (3) mounted on the polish rod (5), a fixed barrel (2) is arranged on the conversion terminal (3) mounted on the lever sleeve (4), and the movable barrel (1) can slide relative to the fixed barrel (2) under the driving of the polish rod (5).