CN210570634U - Level measuring device - Google Patents
Level measuring device Download PDFInfo
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- CN210570634U CN210570634U CN201921933196.4U CN201921933196U CN210570634U CN 210570634 U CN210570634 U CN 210570634U CN 201921933196 U CN201921933196 U CN 201921933196U CN 210570634 U CN210570634 U CN 210570634U
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Abstract
The utility model discloses a level measurement device, including the inside controller of meter box, with controller electric connection's power, with controller electric connection's measuring device, measuring device includes measuring sensor and detection circuitry, detects through the sensor to the response of dull and stereotyped levelness. During the measurement, place the instrument box that will have measuring device on the horizontal flat board that has calibrated, press the calibration and return to zero and measure the button that begins and measure, the utility model discloses can be used to dull and stereotyped dynamic leveling and slope correction, the range is great, and measuring speed is fast, does not rely on all the other auxiliary positioning device. Meanwhile, the precision is higher than that of the existing device, the response time is short, and the system measurement is stable.
Description
Technical Field
The utility model belongs to the technical field of detect, especially, relate to a level measurement device.
Background
The plate inclination measurement and the horizontal calibration are basic conditions and important means for developing numerous machining process experiments, related physical experiments and geological observation experiments. Usually, a bubble type water pipe inclinometer, a vertical pendulum inclinometer and the like can be adopted, but the measuring instrument has the advantages of small size, convenience in use and high precision, but has a small measuring range, the measuring range is generally within +/-0.1 mm, and meanwhile, the measuring instrument also has higher requirements on the use environment and the measuring basis.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a level measurement device to solve background art's problem.
In order to achieve the above object, the present invention provides a level measuring device, which comprises:
the utility model provides a level measurement device, includes instrument box, the inside controller of instrument box, with controller electric connection's power, with controller electric connection's measuring device, measuring device includes measuring sensor and detection circuitry, detects through the response of sensor to dull and stereotyped levelness.
Furthermore, detection circuitry and sensor are fixed inside the instrument box, all can dismantle fixed connection through the bolt.
Furthermore, the sensor comprises a fixed frame, an elastic expansion device connected to each inner side wall of the fixed frame, a resistance strain gauge arranged on the elastic expansion device, and a mass arranged in the inner cavity of the fixed frame; the other end of each elastic expansion device far away from the fixed frame is connected to each side wall of the object block, and the outer ends of the two elastic expansion devices on the same straight line are provided with a positive terminal and a negative terminal which are electrically connected to the resistance strain gauge.
Further, fixed frame and thing piece are quadrilateral structure, and the elasticity telescoping device comprises the first elasticity telescoping device that length is L3, the second elasticity telescoping device that length is L4, the third elasticity telescoping device that length is L1, the fourth elasticity telescoping device that length is L2, the elasticity telescoping device uses the thing piece to distribute as the equal angle of center, connects respectively between fixed frame inside wall and thing piece lateral wall.
Furthermore, the four elastic expansion devices comprise expansion links connected to each inner side wall of the fixed frame and elastic components sleeved on the expansion links, and the outer ends of the two expansion links on the same straight line are electrically connected to the resistance strain gauge; the outer end of the first elastic expansion device is an a terminal, the outer end of the second elastic expansion device is a b terminal, the outer end of the third elastic expansion device is a c terminal, and the outer end of the fourth elastic expansion device is a d terminal; wherein, the a terminal and the b terminal are positive and negative, and the c terminal and the d terminal are positive and negative.
Further, the elastic component is a spring or an elastic sleeve.
Furthermore, the detection circuit comprises an H bridge consisting of two branches, two AD converters and a single chip microcomputer, wherein a terminal and a terminal b are electrically connected to a first branch of the H bridge, a terminal c and a terminal d are electrically connected to a second branch of the H bridge, the H bridges of the first branch and the second branch are respectively and electrically connected to the corresponding AD converters, and the two AD converters are electrically connected to the single chip microcomputer; the amounts of resistance change of the a terminal and the b terminal, and the c terminal and the d terminal were measured by the bridge method, thereby reflecting the plane misalignment.
Furthermore, a reading display screen is further arranged on the instrument box, and a button calibration zero setting button and a measurement starting button are arranged on the instrument box.
Further, resistance foil gage and spring pass through the telescopic link and are connected with the thing piece, and the couple through the spring afterbody directly articulates with the earrings of thing piece, and the unsettled setting of thing piece.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses can be used to dull and stereotyped dynamic level measurement and slope correction, the range is great, and measuring speed is fast, does not rely on all the other auxiliary positioning device. Meanwhile, the precision is higher than that of the existing device, the response time is short, and the system measurement is stable.
Drawings
Fig. 1 is a three-dimensional structure diagram of a level measuring device according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a meter;
fig. 4 is a schematic view of the leveling device according to the present invention during measurement;
FIG. 5 is a schematic diagram of the internal system of the leveling device;
FIG. 6 is a circuit diagram of the internal components of the leveling device;
the reference numbers in the figures illustrate: the device comprises a first elastic telescopic device 1, a second elastic telescopic device 2, a third elastic telescopic device 3, a fourth elastic telescopic device 4, an object block 5, a fixed frame 6, an instrument body 7, a display screen 8, a calibration zero-return 9 and a measurement start 10.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the drawings, FIGS. 1-6, which are included to illustrate the invention.
The designed level measurement device comprises an instrument box, a controller inside the instrument box, a power supply electrically connected with the controller, and a measurement device electrically connected with the controller, wherein a reading display screen is further arranged on the instrument box, and a button for zeroing 9 in button calibration and starting 10 in measurement is arranged. The measuring device comprises a measuring sensor and a detecting circuit, the levelness of the flat plate is sensed and detected through the sensor, the measuring principle is shown in figures 4 and 5, the detecting circuit and the sensor are fixed inside the instrument box and are detachably and fixedly connected through bolts, and a circuit diagram is shown in figure 6.
The sensor comprises a fixed frame 1, an elastic expansion device connected to each inner side wall of the fixed frame 1, a resistance strain gauge arranged on the elastic expansion device, and a block 5 arranged in the inner cavity of the fixed frame 1; the other end of each elastic expansion device far away from the fixed frame 1 is connected to each side wall of the object block 5, and the outer ends of the two elastic expansion devices on the same straight line are provided with a positive terminal and a negative terminal which are electrically connected to the resistance strain gauge.
The detection circuit comprises an H bridge consisting of two branches, two AD converters and a single chip microcomputer, wherein a terminal a and a terminal b are both electrically connected to a first branch of the H bridge, a terminal c and a terminal d are both electrically connected to a second branch of the H bridge, the H bridges of the first branch and the second branch are respectively and electrically connected to the corresponding AD converters, and the two AD converters are electrically connected to the single chip microcomputer; the amounts of resistance change of the a terminal and the b terminal, and the c terminal and the d terminal were measured by the bridge method, thereby reflecting the plane misalignment.
As shown in fig. 1-2, in the present embodiment, the fixed frame 1 and the mass 5 are both described as being of a quadrilateral structure, and the elastic expansion device is composed of a first elastic expansion device with a length of L3, a second elastic expansion device with a length of L4, a third elastic expansion device with a length of L1, and a fourth elastic expansion device with a length of L2, and the elastic expansion devices are distributed at equal angles with the mass 5 as a center and are respectively connected between the inner side wall of the fixed frame 1 and the side wall of the mass 5.
As shown in fig. 2, the four elastic expansion devices include an expansion link connected to each inner sidewall of the fixed frame 1, and an elastic component sleeved on the expansion link, wherein the elastic component is a spring or an elastic sleeve. The outer ends of the two telescopic rods positioned on the same straight line are provided with resistance strain gauges which are electrically connected; when the elastic component is a spring, the resistance strain gauge and the spring are connected with the object block 5 through the telescopic rod, the hook at the tail part of the spring and the earrings of the object block 5 are directly hooked, and the object block 5 is arranged in a hanging mode. The outer end of the first elastic expansion device is an a terminal, the outer end of the second elastic expansion device is a b terminal, the outer end of the third elastic expansion device is a c terminal, and the outer end of the fourth elastic expansion device is a d terminal; the terminal a and the terminal b are positive and negative, and the terminal c and the terminal d are positive and negative; here, the a terminal is connected to the input terminal of R5, the b terminal is connected to the output terminal of R5, the c terminal is connected to the input terminal of R3, and the d terminal is connected to the output terminal of R3.
The flat plate horizontal calibration method adopted by the design comprises the following steps: placing the instrument box with the measuring device on the calibrated horizontal flat plate, and pressing a button for resetting the calibration to zero 9;
at this time, the amounts of resistance change at the ends a, b, c, and d are measured by the bridge method based on the current horizontal level, △ Lx ═ L1-L2 △ Ly ═ L3-L4 in the X-axis and Y-axis directions are reflected;
placing the device on a flat plate to be measured, and pressing a measuring button 10;
at this time, the object 5 is displaced at the original suspension position due to the inclination, and the spring at one end is compressed and the spring at the other end is stretched;
measuring resistance variation amounts of the ends a and b and the ends c and d by using an electric bridge method, thereby reflecting that △ Lx is L1-L2, and △ Ly is L3-L4;
since the hooke's coefficient of the spring is known,
F＝k·△x
from the triangular relationship, the relationship between the tilt angle and the compression amount can be further deduced,
where k is the spring hooke coefficient and m is the mass of the mass corpuscle, given: g is the acceleration of gravity.
As shown in fig. 6, 2.4V voltage is introduced into the left power input terminal, and is modulated by the MAX1759 and LT1461 reference voltage modules, and then is input into the bridge, in the bridge R1-R6, R1-R2-R4-R6-100 Kohm, and R3 and R5 are bridge arms to be tested.
The bridge signals after the operational amplifier are output to an AI (analog input) pin of the singlechip through Vo1 and Vo2, and are measured.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (9)
1. A leveling device characterized by: including instrument box, the inside controller of instrument box, with controller electric connection's power, with controller electric connection's measuring device, measuring device includes measuring sensor and detection circuitry, detects through the response of sensor to dull and stereotyped levelness.
2. The level measuring device of claim 1, wherein the sensing circuit and the sensor are fixed inside the instrument box and are detachably and fixedly connected by bolts.
3. The leveling device according to claim 1, wherein the sensor comprises a fixed frame (1), an elastic expansion device connected to each inner side wall of the fixed frame (1), a resistance strain gauge mounted on the elastic expansion device, and a mass (5) arranged in an inner cavity of the fixed frame (1); the other end of each elastic expansion device far away from the fixed frame (1) is connected to each side wall of the object block (5) together, and the outer ends of the two elastic expansion devices on the same straight line are provided with positive and negative terminals which are electrically connected to the resistance strain gauge.
4. Level measuring device according to claim 3, characterized in that the fixed frame (1) and the mass (5) are of a quadrilateral configuration, and the elastic telescopic means are composed of a first elastic telescopic means with a length L3, a second elastic telescopic means with a length L4, a third elastic telescopic means with a length L1, and a fourth elastic telescopic means with a length L2, said elastic telescopic means being equiangularly distributed around the mass (5) and being connected between the inner side wall of the fixed frame (1) and the side wall of the mass (5), respectively.
5. The leveling device according to claim 4, wherein the four elastic expansion devices comprise an expansion link connected to each inner side wall of the fixed frame (1) and an elastic component sleeved on the expansion link, and the outer ends of the two expansion links located on the same straight line are provided with resistance strain gauges in electrical connection; the outer end of the first elastic expansion device is an a terminal, the outer end of the second elastic expansion device is a b terminal, the outer end of the third elastic expansion device is a c terminal, and the outer end of the fourth elastic expansion device is a d terminal; wherein, the a terminal and the b terminal are positive and negative, and the c terminal and the d terminal are positive and negative.
6. Level measuring device according to claim 5, wherein the elastic member is a spring or an elastic sleeve.
7. The leveling device according to claim 4, wherein the detection circuit comprises an H bridge consisting of two branches, two AD converters and a single chip microcomputer, the a terminal and the b terminal are both electrically connected to a first branch of the H bridge, the c terminal and the d terminal are both electrically connected to a second branch of the H bridge, the H bridges of the first branch and the second branch are respectively electrically connected to the corresponding AD converters, and the two AD converters are electrically connected to the single chip microcomputer; the amounts of resistance change of the a terminal and the b terminal, and the c terminal and the d terminal were measured by the bridge method, thereby reflecting the plane misalignment.
8. Level measuring device according to claim 2, characterized in that the instrument box is also provided with a reading display, a button calibration zero (9) and a measurement start (10) button.
9. The leveling device according to claim 6, wherein the resistance strain gauge and the spring are connected with the object block (5) through a telescopic rod, and are directly hooked with an earring of the object block (5) through a hook at the tail part of the spring, and the object block (5) is arranged in a suspended manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933196.4U CN210570634U (en) | 2019-11-11 | 2019-11-11 | Level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933196.4U CN210570634U (en) | 2019-11-11 | 2019-11-11 | Level measuring device |
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| Publication Number | Publication Date |
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| CN210570634U true CN210570634U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921933196.4U Active CN210570634U (en) | 2019-11-11 | 2019-11-11 | Level measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362028A (en) * | 2020-09-25 | 2021-02-12 | 南京信息职业技术学院 | Four-spring plane displacement type inclination and elevation angle tester and testing method |
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2019
- 2019-11-11 CN CN201921933196.4U patent/CN210570634U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362028A (en) * | 2020-09-25 | 2021-02-12 | 南京信息职业技术学院 | Four-spring plane displacement type inclination and elevation angle tester and testing method |
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Address after: 300350 room 107-22, building 3, No. 3, Hong Kong Street, Jinnan Economic Development Zone (West District), Jinnan District, Tianjin Patentee after: CNNC Xinke (Tianjin) Technology Co.,Ltd. Address before: 300350 room 107-22, building 3, No. 3, Hong Kong Street, Jinnan Economic Development Zone (West District), Jinnan District, Tianjin Patentee before: CNNC XINKE (TIANJIN) PRECISION MACHINERY MANUFACTURING Co.,Ltd. |
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