CN102445192A - Communicating tube member inclination sensor - Google Patents
Communicating tube member inclination sensor Download PDFInfo
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- CN102445192A CN102445192A CN2011102934553A CN201110293455A CN102445192A CN 102445192 A CN102445192 A CN 102445192A CN 2011102934553 A CN2011102934553 A CN 2011102934553A CN 201110293455 A CN201110293455 A CN 201110293455A CN 102445192 A CN102445192 A CN 102445192A
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Abstract
The invention discloses a communicating tube member inclination sensor, which comprises a communicating tube, a water pressure sensor, a water temperature sensor, a pressure measuring tube, a liquid surface fluctuation damper, an anti-evaporation cover and the like. In the sensor, an electric sensing signal of the inclination of a member is output by using the water pressure sensor according to the liquid surface difference of the communicating tube buried or arranged in the member. The communicating tube member inclination sensor has the advantages of high accuracy, large measuring range, high resolution, low manufacturing cost, easiness and convenience for installing and capability of displaying data in real time.
Description
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Technical field
The present invention relates to a kind of sensor of measuring the member angle of inclination or the discrepancy in elevation, a kind of specifically communicating pipe member inclination sensor.
Background technology
At present, inclination sensors such as prior mechanical, photo-electric can only be tested the angle of inclination of a certain measuring point of tested member, for tested member integral body at the test surfaces angle of inclination or the measurement of the edge discrepancy in elevation all inapplicable.
Summary of the invention
The present invention is directed to the deficiency of existing inclination sensor; Propose a kind of communicating pipe inclination sensor, be placed in the edge of tested member to two mouths of pipe of U type communicating pipe respectively, piezometric tube is installed on the mouth of pipe; Liquid level by water pressure sensor measures in the piezometric tube is poor; Sensing gets angle of inclination or the discrepancy in elevation of tested member at test surfaces, and with the computer interconnection deal with data, satisfy the needs of control automatically.
Technical solution problem of the present invention adopts following technical scheme:
A kind of communicating pipe member inclination sensor; It is characterized in that: pre-buried or settle 1 U type communicating pipe in the test surfaces of tested member; The mouth of pipe at these pipe two ends is positioned at the tested member edge at a distance of certain distance, and two mouths of pipe all up and concordant with tested member end face.The mouth of pipe of communicating pipe from bottom to top is mounted with draining valve, water pressure sensor, piezometric tube, vent connector and vaporproof closure successively, and another mouth of pipe from bottom to top is mounted with cooling-water temperature sensor, water pressure sensor, piezometric tube, vent connector and vaporproof closure successively.On two piezometric tube the reading indentation is arranged all, and floating on the water surface in the piezometric tube liquid fluctuating damper arranged.
Communicating pipe member inclination sensor is characterized in that: described water pressure sensor casing is penetrating drum, and there is the spanner shoulder centre in the casing outside, on the casing of spanner shoulder one side, external thread is arranged.Casing has the end of external thread one side that protection net is arranged; From protection net wavy spring film, modulation panel, circuit board, base plate, cable fixed head are arranged successively in the casing; Wavy spring film and modulation panel are provided with perpendicular to the water pressure sensor center line, and are the cavity with atmosphere between it.There is the permanent-magnet steel piece at the center of wavy spring film, and there is Hall element at the modulation panel center, and permanent-magnet steel piece and Hall element be 5mm at interval.The wavy spring film edge has sealing, and air hole is arranged on the modulation panel.
Communicating pipe member inclination sensor is characterized in that: described liquid fluctuating damper is the ball shape, and the red indentation of circumference of 1 road level is arranged in the middle of the disc, in the bottom of ball counterweight block is arranged.
Communicating pipe member inclination sensor is characterized in that: the epimere of said vent connector is the cylindrical piece shape, and its hypomere is a round tube shape, the concentricity line of this cylindrical piece and pipe, and the external diameter of cylindrical piece is bigger than the external diameter of pipe.There is the bulb stopper pit at cylindrical piece end face center, and this pit centres has penetrating circular hole.The cylindrical piece end face has 8 penetrating circular holes of equidistance along periphery, and the fixedly screw thread of vaporproof closure is arranged on the cylindrical piece lateral surface.
Communicating pipe member inclination sensor is characterized in that: the casing of said vaporproof closure is the dome shape, and there is penetrating circular hole at the end face center of casing, and there is screw thread the inboard of hypomere.The circular hole of casing end face is embedded with semicircular translucent cover; From translucent cover red and green color light emitting diode, dividing plate, electromagnet, fixed head, connecting rod and bulb stopper are arranged successively from top to bottom in the casing; The both sides of connecting rod have self-locking circulation slide rail and microswitch respectively, and lock circulation slide rail and microswitch all are fixed on the fixed head.Connecting rod is a straight-bar, and the upper end is connected with electromagnet armature, and the lower end is connected with bulb stopper.The middle part of connecting rod is connected with crank end by bearing pin, and the other end of crank is connected with slide block on the self-locking circulation slide rail.The adhesive kinematic link of electromagnet armature drives slide block by crank and on self-locking circulation slide rail, slides, and bulb stopper is moved up and down by the slide rail track, forms the keying to the center roof vent of vent connector.Connecting rod moves up and down when driving bulb stopper, drives the switch of microswitch, makes bulb stopper be positioned at red and green color light emitting diode bright green when upper, and bulb stopper is positioned at red and green color light emitting diode shiny red when the next.The side of casing is mounted with socket.
Communicating pipe member inclination sensor is based on following principle of work among the present invention:
The principle of work of member inclination sensing: pre-buried or communicating pipe of settling in tested component testing face, the mouth of pipe at these pipe two ends is positioned at the tested member edge of certain distance apart.On two mouths of pipe up, be mounted with water pressure sensor and piezometric tube separately.In communicating pipe, be filled to the reading height of piezometric tube, be arranged at test mode to vaporproof closure, let the liquid level of communicating pipes two mouth of pipe all bear atmospheric pressure.When tested member tilted, then the variation of height took place in the water surface in the piezometric tube.If communicating pipe, the horizontal range of two water delivering orifices was L, the piezometric surface discrepancy in elevation is h, and the angle of inclination of tested member on the test surfaces direction that converses is α=arctg (h/L).Like L=10m, h=1mm, then α=arctg (h/L)=arctg (1/10000)=0.01 °.The differentiation of member vergence direction: when the piezometric surface discrepancy in elevation be+during h, member is tilted to the left; When the piezometric surface discrepancy in elevation be-during h, member is tilted to the right.Water pressure sensor is arranged owing to be installed in below the piezometric tube, the variation of water level makes water pressure sensor bear pressure and also changes in the piezometric tube, just can let the water pressure sensor sensing export the analog electrical signal of tested member run-off the straight.
The principle of work of water pressure sensor: the front fuselage at water pressure sensor is provided with the waveform elastic membrane, and the center of film is pasted with magnet steel, keeps on certain distance and the parallel modulation panel Hall element being set with this magnet steel face.Be installed on water pressure sensor the below of piezometric tube; The elastic membrane of this sensor is out of shape with the variation of the depth of water in the piezometric tube; Changing the distance between magnetic steel ingot and the Hall element; The characteristic that output voltage can change when then utilizing Hall element to accept strong or weak magnet steel magnetic field reaches the purpose of water pressure sensing.In addition, let being operated in the linear elasticity scope of waveform elastic membrane, and the Hall element of selecting linear properties for use, just can reach desirable measurement resolution and precision.
Beneficial effect of the present invention is embodied in:
Simple structure of the present invention, volume is little, range is big, precision is high, easy for installation, cost is low, video data is applicable to the test of the building element angles of inclination such as dam, bridge or the discrepancy in elevation in real time.
Description of drawings
Figure 1A is the front view of communicating pipe member inclination sensor of the present invention.
Figure 1B is the left view of communicating pipe member inclination sensor of the present invention.
Fig. 1 C is the vertical view of communicating pipe member inclination sensor of the present invention.
Fig. 2 A is the front view of water pressure sensor among the present invention.
Fig. 2 B is the side view of water pressure sensor among the present invention.
Fig. 2 C is the vertical view of water pressure sensor among the present invention.
Fig. 3 A is the front view of liquid fluctuating damper among the present invention.
Fig. 3 B is the left view of liquid fluctuating damper among the present invention.
Fig. 4 A is the front view of vent connector among the present invention.
Fig. 4 B is the vertical view of vent connector among the present invention.
Fig. 5 A is the front view of vaporproof closure among the present invention.
Fig. 5 B is the left view of vaporproof closure among the present invention.
Fig. 5 C is the vertical view of vaporproof closure among the present invention.
Label among the figure:
1 tested member, 2 water, 3 communicating pipes, 4 piezometric tube, 5 draining valves, 6 cooling-water temperature sensors; 11 water pressure sensors, 12 protection nets, 13 wavy spring films, 14 permanent-magnet blocks, 15 Hall elements, 16 modulation panels, 17 air holes, 18 circuit boards, 19 casings, 20 base plates, 21 cable fixed head, 22 cables; 31 liquid fluctuating dampers, 32 circumference indentations, 33 counterweight blocks; 41 vent connectors, 42 cylindrical pieces, 43 pipes, 44 bulb stopper pits, 45 center roof vents; 51 vaporproof closures, 52 red and green color light emitting diodes, 53 electromagnet, 54 microswitches, 55 self-locking circulation slide rails, 56 connecting rods, 57 bulb stoppers, 58 translucent covers, 59 cranks, 60 fixed heads, 61 dividing plates, 62 casings, 63 sockets.
Embodiment
Referring to Figure 1A, Figure 1B and Fig. 1 C; Pre-buried or settle 1 U type communicating pipe 3 in the test surfaces of tested member 1 described in the present embodiment; The mouth of pipe at these pipe two ends is positioned at tested member 1 edge at a distance of certain distance, and two mouths of pipe all up and concordant with tested member 1 end face.1 mouth of pipe of communicating pipe 3 from bottom to top is mounted with draining valve 5, water pressure sensor 11, piezometric tube 4, vent connector 41 and vaporproof closure 51 successively, and 1 mouth of pipe from bottom to top is mounted with cooling-water temperature sensor 6, water pressure sensor 11, piezometric tube 4, vent connector 41 and vaporproof closure 51 successively in addition.On two piezometric tube 4 the reading indentation is arranged all, and 2 in water is gone up the floating liquid fluctuating damper 31 that has in the piezometric tube 4.
Referring to Fig. 2 A, Fig. 2 B and Fig. 2 C, water pressure sensor 11 casings 19 described in the present embodiment are penetrating drum, and there is the spanner shoulder centre in casing 19 outsides, on the casing 19 of spanner shoulder one side, external thread is arranged.Casing 19 has the end of external thread one side that protection net 12 is arranged; From protection net 12 wavy spring film 13, modulation panel 16, circuit board 18, base plate 20, cable fixed head 21 are arranged successively in the casing 19; Wavy spring film 13 and modulation panel 16 be perpendicular to water pressure sensor 11 center line settings, and be the cavity with atmosphere between it.There is permanent-magnet steel piece 14 at the center of wavy spring film 13, and there is Hall element 15 at modulation panel 16 centers, permanent-magnet steel piece 14 and Hall element 15 interval 5mm.There is sealing at wavy spring film 13 edges, and air hole 17 is arranged on the modulation panel 16.
Referring to Fig. 3 A and Fig. 3 B, the liquid fluctuating damper 31 described in the present embodiment is the ball shape, and the red indentation 32 of circumference of 1 road level is arranged in the middle of the disc, and counterweight block 33 is arranged in the bottom of ball.
Referring to Fig. 4 A and Fig. 4 B, the epimere of vent connector described in the present embodiment 41 is cylindrical piece 42 shapes, and its hypomere is pipe 43 shapes, this cylindrical piece 42 and pipe 43 concentricity lines, and the external diameter of cylindrical piece 42 is bigger than the external diameter of pipe 43.There is bulb stopper pit 44 at cylindrical piece 42 end face centers, and there is penetrating circular hole 45 at these pit 44 centers.Cylindrical piece 42 end faces have 8 penetrating circular holes of equidistance along periphery, and the fixedly screw thread of vaporproof closure 51 is arranged on cylindrical piece 42 lateral surfaces.
Referring to Fig. 5 A and Fig. 5 B, the casing 62 of vaporproof closure described in the present embodiment 51 is the dome shape, and there is penetrating circular hole at the end face center of casing 62, and there is screw thread the inboard of hypomere.The circular hole of casing 62 end faces is embedded with semicircular translucent cover 58; From translucent cover 58 red and green color light emitting diode 52, dividing plate 61, electromagnet 53, fixed head 60, connecting rod 56 and bulb stopper 57 are arranged successively from top to bottom in the casing 62; The both sides of connecting rod 56 have self-locking circulation slide rail 55 and microswitch 54 respectively, and lock circulation slide rail 55 all is fixed on the fixed head 60 with microswitch 54.Connecting rod 56 is a straight-bar, and the upper end is connected with the armature of electromagnet 53, and the lower end is connected with bulb stopper 57.The middle part of connecting rod 56 is connected with crank 59 ends by bearing pin, and the other end of crank 59 is connected with slide block on the self-locking circulation slide rail 55.The adhesive kinematic link 56 of electromagnet 53 armature drives slide block by crank 59 and on self-locking circulation slide rail 55, slides, and bulb stopper 57 is moved up and down by the slide rail track, forms the keying to the center roof vent 45 of vent connector 41.Connecting rod 56 moves up and down when driving bulb stopper 57, drives the switch of microswitch 54, makes bulb stopper 57 be positioned at red and green color light emitting diode 52 bright greens when upper, and bulb stopper 57 is positioned at red and green color light emitting diode 52 shiny reds when the next.The side of casing 62 is mounted with socket 63.
The material of said piezometric tube 4 is a clear glass, and the material of water 2 is the water that incorporates the anticorrosion anti-biological chemical agent of deriving, and the material of liquid fluctuating damper 31 is a light plastic; The material of said wavy spring film 13 is the HDPE resin; The material of said modulation panel 16 is engineering plastics; The material of said bulb stopper 57 is a light plastic.
Adopting water pressure sensor 11 all is set on two piezometric tube 4 is in order to back up, and adapts to different method of testings.
Allocation method when using communicating pipe member inclination sensor is characterized in that being undertaken by following process:
A. pre-buried or settle U type communicating pipe in testee, and two mouths of pipe that should pipe are all up.
B. connect draining valve, cooling-water temperature sensor, water pressure sensor, piezometric tube with water conservancy project devices such as straight-through, threeway, Shu Jie, its seam crossing is all established sealing.
C. sieve from the piezometric tube of a side and inject the water of mixing antiseptic, water is filled with in piezometric tube.Pouring weight is put into two piezometric tube to two liquid fluctuating dampers downwards respectively, opens the draining valve draining, let liquid fluctuating damper reading indentation be positioned at the range of readings of piezometric tube after, fasten draining valve.
D. be tightened against two vaporproof closures respectively the vent connector of piezometric tube upper end, and be arranged at test mode, be i.e. liquid level and atmospheric pressure UNICOM (the non-test duration should be closed vaporproof closure, influences test to prevent evaporation of water in the piezometric tube) in the piezometric tube.
E. connect the cable of water pressure sensor, cooling-water temperature sensor and vaporproof closure with member inclination processor, can carry out the test of the angle of inclination or the discrepancy in elevation testee.
The effect of water 2 is in communicating pipe, to form horizontal liquid level; The effect of communicating pipe 3 is to let the test point of tested member constitute the connection of water; The effect of piezometric tube 4 is to show liquid level, and places liquid fluctuating damper 31; The effect of draining valve 5 is to discharge unnecessary water in the piezometric tube 4, makes the read text scale of liquid fluctuating damper 31 be positioned at test specification; The effect of cooling-water temperature sensor 6 is temperature of test water, revises the influence of water temperature to liquid level in the piezometric tube;
The effect of water pressure sensor 11 is height of liquid level in the sensing piezometric tube; The effect of protection net 12 is protection wavy spring films 13; The effect of wavy spring film 13 is when bearing water pressure, forms linear deformation, lets permanent magnet give the Hall element magnetic line of force; The effect of permanent-magnet block 14 is to give Hall element 15 magnetic lines of force; The effect of Hall element 15 is under permanent magnet 14 effects, the electric signal of sensing testing; The effect of modulation panel 16 is the operating distances of regulating Hall element 15 and permanent magnet 14; The effect of air hole 17 is to let the both sides of wavy spring film 13 all act on relative atmospheric pressure; The effect of circuit board 18 is welding Hall element 15 and control circuit; The effect of casing 19 is protection and components and parts such as fixed waveform spring diaphragm 13, modulation panel 16; The effect of base plate 20 is that cable fixed head 21 is installed; The effect of cable fixed head 21 is attached cables 22; The effect of cable 22 is input power supply and output transducing signal; The effect of liquid fluctuating damper 31 is the fluctuations that reduce liquid level in the piezometric tube 4, and the reading of being convenient to this liquid level; The effect of circumference indentation 32 is the readings for liquid level in the piezometric tube 4; The effect of counterweight block 33 is to let the circumference indentation of liquid fluctuating damper 31 32 keep horizontality; The effect of vent connector 41 is to let piezometric tube 4 be connected with vaporproof closure 51, and air hole is set; The effect of cylindrical piece 42 is air hole, bulb stopper pit 44, center roof vent 45 to be set and the fixedly screw thread of vaporproof closure 51 is set; The effect of pipe 43 is to be connected with piezometric tube 4 to fix; The effect of bulb stopper pit 44 is to be convenient to bulb stopper 57 to open and close center roof vent 45; The effect of center roof vent 45 is to keep bearing atmospheric pressure for liquid level in the piezometric tube 4; The effect of vaporproof closure 51 is the evaporations that prevent moisture in the piezometric tube 4, and the signal of duty is provided; The effect of red and green color light emitting diode 52 provides the signal of duty; The effect of electromagnet 53 is for opening and closing bulb stopper 57 power to be provided; The effect of microswitch 54 is control red and green color diode 52 shows signal; The effect of self-locking circulation slide rail 55 is to let the adhesive kinematic link 56 of electromagnet 53 armature, drives slide block by crank 59 and on self-locking circulation slide rail 55, slides, and bulb stopper 57 is moved up and down, forms the keying to bulb stopper pit 44 center roof vents 45 of vent connector 41; The effect of connecting rod 56 is that electromagnet 53 is connected with bulb stopper 57; The effect of bulb stopper 57 is to open and close center roof vent 45; The effect of translucent cover 58 is protection red and green color light emitting diodes 52; The effect of crank 59 is to let connecting rod 56 move up and down by the track of self-locking circulation slide rail 55; The effect of fixed head 60 is that electromagnet 53 components and parts such as grade are fixed in casing 62; The effect of dividing plate 61 is reflective and baffle plate; The effect of casing 62 is protections and settles components and parts; The effect of socket 63 is that sensor is connected with the wiring of member inclination processor.
The performance of communicating pipe member inclination sensor
1. range:
1) angle of inclination: 0～90 ° or-45 °～45 °;
2) water surface discrepancy in elevation: 0～100mm or-50mm～50mm.
2. resolution: 0.1 °.
3. precision: ± 0.3 °.
4. working temperature: 5～60 ℃.
Claims (5)
1. communicating pipe member inclination sensor; Include tested member (1); It is characterized in that: pre-buried or settle communicating pipe (3) of 1 U type in the test surfaces of tested member (1); Communicating pipe, the mouth of pipe at (3) two ends was positioned at tested member (1) edge, and two mouths of pipe all up and concordant with tested member (1) end face; The mouth of pipe of communicating pipe (3) from bottom to top is mounted with draining valve (5), water pressure sensor (11), piezometric tube (4), vent connector (41) and vaporproof closure (51) successively, and another mouth of pipe from bottom to top is mounted with cooling-water temperature sensor (6), water pressure sensor (11), piezometric tube (4), vent connector (41) and vaporproof closure (51) successively; On two piezometric tube (4) the reading indentation is arranged all, and floating on the interior water of piezometric tube (4) (2) face liquid fluctuating damper (31) arranged.
2. communicating pipe member inclination sensor according to claim 1; It is characterized in that: the casing (19) of described water pressure sensor (11) is penetrating drum; There is the spanner shoulder centre in casing (19) outside, on the casing (19) of spanner shoulder one side, external thread is arranged; Casing (19) has the end of external thread one side that protection net (12) is arranged; From protection net (12) wavy spring film (13), modulation panel (16), circuit board (18), base plate (20) and cable fixed head (21) are arranged successively in the casing (19); Wavy spring film (13) and modulation panel (16) be perpendicular to water pressure sensor (11) center line setting, and be the cavity with atmosphere between it; There is permanent-magnet steel piece (14) at the center of wavy spring film (13), and there is Hall element (15) at modulation panel (16) center, permanent-magnet steel piece (14) and Hall element (15) interval 5mm; There is sealing at wavy spring film (13) edge, and air hole (17) is arranged on the modulation panel (16).
3. according to the said communicating pipe member of claim 1 inclination sensor, it is characterized in that: described liquid fluctuating damper (31) is the ball shape, and the red indentation (32) of circumference of 1 road level is arranged in the middle of the disc, and counterweight block (33) is arranged in the bottom of ball.
4. according to the said communicating pipe member of claim 1 inclination sensor; It is characterized in that: the epimere of said vent connector (41) is cylindrical piece (a 42) shape; Its hypomere is pipe (a 43) shape; Said cylindrical piece (42) and the concentricity line of pipe (43), and the external diameter of cylindrical piece (42) is bigger than the external diameter of pipe (43); There is bulb stopper pit (44) at cylindrical piece (42) end face center, and there is penetrating circular hole (45) at this pit (44) center; Cylindrical piece (42) end face has 8 penetrating circular holes of equidistance along periphery, and the fixedly screw thread of vaporproof closure (51) is arranged on cylindrical piece (42) lateral surface.
5. according to the said communicating pipe member of claim 1 inclination sensor, it is characterized in that: the casing (62) of said vaporproof closure (51) is the dome shape, and there is penetrating circular hole at the end face center of casing (62), and there is screw thread the inboard of hypomere; The circular hole of casing (62) end face is embedded with semicircular translucent cover (58); From translucent cover (58) red and green color light emitting diode (52), dividing plate (61), electromagnet (53), fixed head (60), connecting rod (56) and bulb stopper (57) are arranged successively from top to bottom in the casing (62); The both sides of connecting rod (56) have self-locking circulation slide rail (55) and microswitch (54) respectively, and lock circulation slide rail (55) all is fixed on the fixed head (60) with microswitch (54); Connecting rod (56) is a straight-bar, and the upper end is connected with the armature of electromagnet (53), and the lower end is connected with bulb stopper (57); The middle part of connecting rod (56) is connected with crank (59) end by bearing pin, and the other end of crank (59) is connected with slide block on the self-locking circulation slide rail (55); The adhesive kinematic link (56) of electromagnet (53) armature; Driving slide block by crank (59) slides on self-locking circulates slide rail (55); Bulb stopper (57) is moved up and down by the slide rail track, form keying the center roof vent (45) of vent connector (41); Connecting rod (56) moves up and down when driving bulb stopper (57); Drive the switch of microswitch (54); Make bulb stopper (57) be positioned at red and green color light emitting diode (52) bright green when upper, bulb stopper (57) is positioned at red and green color light emitting diode (52) shiny red when the next; The side of casing (62) is mounted with socket (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110293455 CN102445192B (en) | 2011-09-30 | 2011-09-30 | Communicating tube member inclination sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110293455 CN102445192B (en) | 2011-09-30 | 2011-09-30 | Communicating tube member inclination sensor |
Publications (2)
| Publication Number | Publication Date |
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| CN102445192A true CN102445192A (en) | 2012-05-09 |
| CN102445192B CN102445192B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110293455 Expired - Fee Related CN102445192B (en) | 2011-09-30 | 2011-09-30 | Communicating tube member inclination sensor |
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| CN (1) | CN102445192B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829761A (en) * | 2012-08-17 | 2012-12-19 | 广州市市政工程设计研究院 | Rapid measuring system of ground height difference |
| CN106595591A (en) * | 2016-12-02 | 2017-04-26 | 江西省莲花水轮机厂有限公司 | Horizontal calibration method of platform |
| CN109946012A (en) * | 2019-04-03 | 2019-06-28 | 中铁二十一局集团第二工程有限公司 | Device and measurement method for water-pressure survey in ground layer soil body |
| CN112693576A (en) * | 2021-01-26 | 2021-04-23 | 广船国际有限公司 | Ship inclination test device |
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|---|---|---|---|---|
| US20050155241A1 (en) * | 2004-01-19 | 2005-07-21 | Wolfgang Scheyer | Bubble element for a spirit level |
| CN201007647Y (en) * | 2006-07-06 | 2008-01-16 | 朱志学 | Multi-point level instrument |
| CN202304812U (en) * | 2011-09-30 | 2012-07-04 | 合肥工业大学 | Tilting sensor of communicated-pipe-type construction member |
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2011
- 2011-09-30 CN CN 201110293455 patent/CN102445192B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155241A1 (en) * | 2004-01-19 | 2005-07-21 | Wolfgang Scheyer | Bubble element for a spirit level |
| CN201007647Y (en) * | 2006-07-06 | 2008-01-16 | 朱志学 | Multi-point level instrument |
| CN202304812U (en) * | 2011-09-30 | 2012-07-04 | 合肥工业大学 | Tilting sensor of communicated-pipe-type construction member |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829761A (en) * | 2012-08-17 | 2012-12-19 | 广州市市政工程设计研究院 | Rapid measuring system of ground height difference |
| CN106595591A (en) * | 2016-12-02 | 2017-04-26 | 江西省莲花水轮机厂有限公司 | Horizontal calibration method of platform |
| CN109946012A (en) * | 2019-04-03 | 2019-06-28 | 中铁二十一局集团第二工程有限公司 | Device and measurement method for water-pressure survey in ground layer soil body |
| CN112693576A (en) * | 2021-01-26 | 2021-04-23 | 广船国际有限公司 | Ship inclination test device |
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| Publication number | Publication date |
|---|---|
| CN102445192B (en) | 2013-06-12 |
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