CN203148429U - Digital beam type tilt meter - Google Patents
Digital beam type tilt meter Download PDFInfo
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- CN203148429U CN203148429U CN 201320059480 CN201320059480U CN203148429U CN 203148429 U CN203148429 U CN 203148429U CN 201320059480 CN201320059480 CN 201320059480 CN 201320059480 U CN201320059480 U CN 201320059480U CN 203148429 U CN203148429 U CN 203148429U
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- beam type
- inclinator
- processor
- obliquity sensor
- digitizing
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Abstract
The utility model discloses a digital beam type tilt meter. The digital beam type tilt meter comprises a tilt angle sensor, a filtering unit, a processor, a digital display indexing rotary table, a power system and a beam type shell, wherein the tilt angle sensor is used for providing a high-resolution tilt angle; the filtering unit is used for filtering an analog signal which is output by the tilt angle sensor; the processor is used for performing high-accuracy analog-to-digital conversion on the filtered analog signal which is output by the tilt angle sensor, and performing angle conversion on a signal subjected to digital processing; the digital display indexing rotary table is used for testing data required for the linear compensation of the tilt angle sensor, and calculating an appropriate linear calibration coefficient; the power system is used for supplying power; and the tilt angle sensor, the filtering unit, the processor and the power system are arranged in the beam type shell. According to the digital beam type tilt meter, by combining the tilt angle sensor with the beam type shell, rolling and pitching quasi-static high-accuracy angle measurement can be provided, and application requirements on structural health monitoring, linear hashing displacement change and the like can be met.
Description
Technical field
The utility model belongs to field of measuring technique, relates to a kind of inclinator, relates in particular to a kind of digitizing beam type inclinator.
Background technology
The digitizing inclinator is to measure object tilt variation and the time dependent instrument of pedal line in time; Be used in heavy industry machinery more, detect zero point, occasions such as straight line and level control, but need Monitoring Surface Subsidence, when perhaps swelling then cost increase greatly, precision reduces greatly, should not use;
Generally, inclinator only can be measured the roll of heavy industry plant equipment, the quasistatic angle of pitching, for the vertical swing of continuous retaining wall, the structural stability of landslide area, then precision is not high during the monitoring of longer distance such as tunnel, railroad track, and cost is higher.
The Sensitive Apparatus that existing digitizing beam type inclinator generally adopts electrolytic solution is as obliquity sensor, and range is little, and temperature influence is big, provides single shaft or twin shaft to measure, i.e. roll, luffing angle are measured.
For the existing requirement of not satisfied actual measurement based on the digitizing beam type inclinator of electrolyte principle, method in the past selects a plurality of obliquity sensors based on acceleration of gravity (based on MENS) to replace the beam type obliquity sensor, cost increases greatly like this, also introduced bigger error simultaneously, and the advantage of its MENS sensor can not have been embodied a concentrated reflection of out.Will be based on the sensor of acceleration of gravity (based on MENS) principle and combining of beam type shell innovation, reduce user's burden, improve the precision of measuring, in some application places, as the structural safety around the monitoring of deflection of bridge span, the excavating area or the monitoring in tunnel, the fields such as monitoring of converging channel and other movable tunnels have tangible technical advantage and using value.
Mostly to be shell less for common inclinator in the market, be far smaller than 0.5 meter, and that common beam type inclinator adopts beam type shell and electrolytic solution to have a range as the obliquity sensor of Sensitive Apparatus more is little, temperature influence is bigger, has the cost height, characteristics such as poor stability.
In view of this, nowadays press for a kind of new beam type inclinator of design, in order to further improve the degree of accuracy of measuring, reduce cost simultaneously.
The utility model content
Technical problem to be solved in the utility model is: a kind of digitizing beam type inclinator is provided, can improves the degree of accuracy of measurement.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of digitizing beam type inclinator, described inclinator comprises:
Obliquity sensor is in order to provide high-resolution angle of inclination;
Filter unit is connected with described obliquity sensor, in order to the simulating signal of described obliquity sensor output is carried out filtering;
Processor, be connected with described filter unit, in order to the simulating signal through filtering of obliquity sensor output is carried out the high precision analogue conversion, in processor, do digital signal filtering, reflect inclination angle output information truly, and the signal after the digital processing is carried out angular transition;
Digital display graduation rotating platform is connected with described processor, tests in order to obliquity sensor is made the required data of linear compensation, calculates suitable linear calibration's coefficient; Linear calibration's coefficient that described processor further utilizes digital display graduation rotating platform to calculate is made linear compensation to the angle-data of measuring;
Power-supply system is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, in order to power supply to be provided;
Beam type shell, described obliquity sensor, filter unit, processor, power-supply system are arranged in this beam type shell.
As a kind of preferred version of the present utility model, described beam type shell comprises loam cake, square tube, end socket, and square tube is as the main body of beam type shell, and loam cake is arranged on the square tube, and end socket is arranged at the both sides of square tube.
As a kind of preferred version of the present utility model, described filter unit is the hardware filtering unit, in order to filtering in the simulating signal bandwidth that obliquity sensor is exported.
As a kind of preferred version of the present utility model, described inclinator further comprises high low temperature sweat box, does compensation in order to the temperature at zero point of inclinator is floated.
As a kind of preferred version of the present utility model, described inclinator further comprises high low temperature sweat box, does compensation in order to the Sensitivity Temperature of inclinator is floated.
As a kind of preferred version of the present utility model, described inclinator further comprises one or more in 232 output interfaces, 485 output interfaces, 422 output interfaces, V/I output interface, LCD output interface, the CAN interface.
As a kind of preferred version of the present utility model, described processor is the MCU of built-in 24bit analog-to-digital conversion unit AD.
As a kind of preferred version of the present utility model, described beam type outer cover length is 1 meter, 2 meters or 3 meters.
The beneficial effects of the utility model are: the digitizing beam type inclinator that the utility model proposes, by obliquity sensor and beam type shell are combined, the quasi-static high precision measurement of angle of roll, pitching can be provided, can satisfy the application demand of structural health monitoring, linear array change in displacement etc.
The general length of the utility model beam type inclinator is longer, can be 1 meter, 2 meters, 3 meters etc. as length.And more common inclinator is generally all less in the market; be far smaller than 1 meter long; described obliquity sensor, filter unit, processor, power-supply system are arranged in this beam type shell; in order to protect obliquity sensor, filter unit; processor, power-supply system is simultaneously again as the reference field of this sensor; have easy installation, a plurality of single beam type shells can be coupled together to obtain characteristics such as inclination and distortion profile.
This digital inclinator can provide abundant interface, and as digital quantity RS232, RS485, RS422, CAN, LCD shows, the digital interface software protocol is optional, as Modbus, and CAN2.0a or Can2.0b etc., analog quantity voltage and electric current, the analog quantity output area can arrange.
In addition, the utility model Digital Dipmeter in house software is integrated from calibration algorithm, and externally shirtsleeve operation realizes the demarcation automatically of Digital Dipmeter numeral itself.
Description of drawings
Fig. 1 is the composition synoptic diagram of the utility model digitizing beam type inclinator.
Fig. 2 is the structural representation of beam type shell.
Fig. 3 is another structural representation of beam type shell.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
The utility model has disclosed a kind of digitizing beam type inclinator, comprises obliquity sensor, filter unit, processor, digital display graduation rotating platform, power-supply system, beam type shell.Obliquity sensor is in order to provide high-resolution angle of inclination; Filter unit is connected with described obliquity sensor, in order to the simulating signal of described obliquity sensor output is carried out filtering; Processor is connected with described filter unit, in order to the simulating signal through filtering of obliquity sensor output is carried out the high precision analogue conversion, in processor, do digital signal filtering, reach and reflect inclination angle output information truly, and the signal after the digital processing is carried out angular transition; Digital display graduation rotating platform is connected with described processor, tests in order to obliquity sensor is made the required data of linear compensation, calculates suitable linear calibration's coefficient; Linear calibration's coefficient that described processor further utilizes digital display graduation rotating platform to calculate is made linear compensation to the angle-data of measuring; Power-supply system is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, in order to power supply to be provided.Described obliquity sensor, filter unit, processor, power-supply system are arranged in this beam type shell.
See also Fig. 1, in the present embodiment, described inclinator comprises that MCU4, digital display graduation rotating platform (not shown), a plurality of output interface of core high precision MEMS obliquity sensor 1, hardware filtering unit 2, power-supply system 3, built-in 24Bit analog-to-digital conversion unit AD (comprise 232 output interfaces 5,485 output interfaces 6,422 output interfaces 7, V/I output interface 8, LCD output interface 9, CAN interface 10), beam type shell 11.Described MCU4 connects hardware filtering unit 2, power-supply system 3, digital display graduation rotating platform, each output interface, and described power-supply system 3 connects obliquity sensor 1, hardware filtering unit 2, digital display graduation rotating platform, each output interface.Described core high precision MEMS obliquity sensor 1, hardware filtering unit 2, power-supply system 3, MCU4, a plurality of output interface all are arranged in the beam type shell 11.
The structure of beam type shell 11 such as Fig. 2, shown in Figure 3.Described beam type shell 11 comprises loam cake 21, square tube 22, end socket 23, and square tube 22 is as the main body of beam type shell 11, and loam cake 21 is arranged on the square tube 22, and end socket 23 is arranged at the both sides of square tube 22.Beam type shell 11 general length are longer, can be 1 meter, 2 meters, 3 meters etc. as length.And more common inclinator is generally all less in the market; be far smaller than 1 meter long; described obliquity sensor, filter unit, processor, power-supply system are arranged in this beam type shell; in order to protect obliquity sensor, filter unit; processor, power-supply system is simultaneously again as the reference field of this sensor; have easy installation, a plurality of single beam type shells can be coupled together to obtain characteristics such as inclination and distortion profile.
Core high precision MEMS obliquity sensor 1 can provide very high angular resolution, by filtering in hardware filtering unit 2 couples of high precision MEMS obliquity sensor 1 output simulating signal bandwidth, the simulating signal of the core high precision of the MCU of built-in 24BitAD MEMS obliquity sensor 1 output is carried out the high precision analogue conversion, in the MCU in house software, do digital signal filtering, reach and reflect inclination angle output information truly.
The MCU4 of built-in 24bitAD can carry out angular transition to signal after the digital processing, can utilize outside high-precision digital display graduation rotating platform that obliquity sensor is made the required data of linear compensation then and test.The MCU4 of built-in 24bit AD utilizes inner least square method algorithm to the on-line testing data operation, calculates suitable linear calibration's coefficient, and is stored in the Flash Data storage space of opening up MCU inside.After measuring each time, linear calibration's coefficient that the MCU4 of built-in 24bit AD utilizes calculated in advance to go out is made linear compensation to the angle-data of measuring, and reaches the purpose of the linearity that improves measurement of dip angle.
The linear compensation method of described processor comprises: to one group of standard value a
1, a
2, a
3..., a
kAnd the actual measurement gained one class value b to organizing standard value
1, b
2, b
3..., b
k, simulate a polynomial expression a according to two class values
i=F (b
i), i=1...k, i.e. f=k
0+ k
1C+k
2C
2+ k
3C
3+ ...+k
mC
m, k
0, k
1, k
2, k
3..., k
mBe multinomial coefficient, C=a
1, a
2, a
3..., a
kUtilize the least square method algorithm, find the solution the coefficient k of fitting of a polynomial
0, k
1, k
2, k
3..., k
m, the MCU program of processor is solidified this polynomial expression wherein, and utilizes this polynomial expression that the data of gathering are carried out polynomial computation, i.e. compensation data.
As shown in Figure 1, circuit inside is provided with 232 output interfaces, 5,485 output interfaces, 6,422 output interfaces 7, V/I output interface 8, LCD output interface 9, CAN interface 10 provides multiple output interface, circuit internal structure 232 output interfaces 5 wherein, 485 output interfaces, 6,422 output interfaces 7 can provide output according to user's needs custom communication agreement or according to standard agreement, as ModBus etc.; CAN interface 10 can be realized Can2.0a/b or the output of Can Open agreement.V/I output interface 8 can provide voltage and current output, but output voltage unipolarity or bipolarity, output voltage range reaches-10VDC～+ 10VDC, can adjust voltage output range by software inhouse.Electric current output can reach 0～24mA scope, and the electric current output area can be by the software inhouse adjustment.
In addition, described digitizing beam type inclinator further comprises high low temperature sweat box, does compensation in order to the temperature at zero point of digitizing beam type inclinator is floated float with Sensitivity Temperature.Utilize the high low temperature experimental box of external unit that core high precision MEMS obliquity sensor 1 is done temperature compensation test (Sensitivity Temperature is floated, zero point temperature float), built-in 24bitMCU4 utilize inner least square method algorithm to online to test data handle, computing, calculate temperature compensation coefficient, and be stored in the storage space of opening up inside, every-inferior measurement data output later on all can be reduced temperature to the influence of sensor well by the temperature compensation coefficient correction.
Zero point, the temperature drift compensation method comprised: humid test is done in the output at zero point to inclinator, export the variation of temperature influence the zero point of measuring inclinator, utilize least square fitting to go out polynomial relation formula between zero point output and the temperature variation, Z=Z (T), i.e. Z (T)=k
0+ k
1T+k
2T
2+ k
3T
3+ ...+k
mT
m, wherein, k
0, k
1, k
2, k
3..., k
mBe multinomial coefficient; Utilize the least square method algorithm, find the solution the coefficient k of fitting of a polynomial
0, k
1, k
2, k
3..., k
n, the MCU program of processor is solidified this polynomial expression wherein, and utilizes this relational expression that compensation is done in output at zero point.
Sensitivity Temperature is floated compensation method and comprised: humid test is done in the sensitivity to inclinator, measure the variation of the sensitivity temperature influence of inclinator, utilize least square fitting to go out polynomial relation formula between sensitivity and the temperature variation, S=S(T), i.e. S (T)=k
0+ k
1T+k
2T
2+ k
3T
3+ ...+k
mT
m, wherein, k
0, k
1, k
2, k
3..., k
mBe multinomial coefficient; Utilize the least square method algorithm, find the solution the coefficient k of fitting of a polynomial
0, k
1, k
2, k
3..., k
m, the MCU program of processor is solidified this polynomial expression wherein, and utilizes this relational expression that compensation is done in sensitivity.
Above-mentioned three compensation process have used least square method; In three compensation process, polynomial coefficient k
0, k
1, k
2, k
3..., k
nCalculate polynomial coefficient k in three compensation process according to actual conditions
0, k
1, k
2, k
3..., k
mAnd do not require equal.
More than introduced the composition of the utility model digitizing beam type inclinator, the utility model also discloses a kind of measuring method of above-mentioned digitizing beam type inclinator when disclosing above-mentioned digitizing beam type inclinator composition; Described measuring method comprises the steps:
[step S1] obliquity sensor provides high-resolution angle of inclination, and filter unit is to the simulating signal filtering of obliquity sensor output;
[step S2] processor carries out the high precision analogue conversion to the simulating signal through filtering of obliquity sensor output, does digital signal filtering in processor, reaches to reflect inclination angle output information truly;
The signal of [step S3] processor after to digital processing carries out angular transition, utilizing outside high-precision digital display graduation rotating platform that obliquity sensor is made the required data of linear compensation tests, described processor utilizes the least square method algorithm to the on-line testing data operation, calculate suitable linear calibration's coefficient, and be stored in the storage space in the processor;
After [step S4] measured each time, linear calibration's coefficient that processor utilizes calculated in advance to go out was made linear compensation to the angle-data of measuring, and reaches the purpose of the linearity that improves measurement of dip angle.
[step S6] selects corresponding angle to resolve mode according to the compensation result of static state, reaches the purpose of the static measurement precision that digitizing beam type inclinator is provided.
In sum, the digitizing beam type inclinator that the utility model proposes can provide the quasistatic high precision measurement of angle of roll, pitching, displacement, can satisfy the application demand of structural health monitoring, linear array change in displacement etc.Simultaneously, the utility model with beam type shell and obliquity sensor perfect adaptation together, provide and measure body roll, pitching, displacement quasistatic angle, realize powerful measurement function, the existing relatively digitizing beam type inclinator based on the electrolytic solution principle has a clear superiority in.
Rigid good, not yielding, the high-low temperature resistant of the utility model digitizing beam type inclinator, good airproof performance; Simultaneously can provide abundant interface, as digital quantity RS232, RS485, RS422, CAN, LCD shows that the digital interface software protocol is optional, as Modbus, and CAN2.0a or Can2.0b etc., analog quantity voltage and electric current, the analog quantity output area can arrange.
In addition, the utility model Digital Dipmeter in house software is integrated from calibration algorithm, and externally shirtsleeve operation realizes the demarcation automatically of Digital Dipmeter numeral itself.
Here description of the present utility model and application is illustrative, is not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or essential characteristic, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (8)
1. digitizing beam type inclinator is characterized in that described inclinator comprises:
Obliquity sensor is in order to provide high-resolution angle of inclination;
Filter unit is connected with described obliquity sensor, in order to the simulating signal of described obliquity sensor output is carried out filtering;
Processor, be connected with described filter unit, in order to the simulating signal through filtering of obliquity sensor output is carried out the high precision analogue conversion, in processor, do digital signal filtering, reflect inclination angle output information truly, and the signal after the digital processing is carried out angular transition;
Digital display graduation rotating platform is connected with described processor, tests in order to obliquity sensor is made the required data of linear compensation, calculates suitable linear calibration's coefficient; Linear calibration's coefficient that described processor further utilizes digital display graduation rotating platform to calculate is made linear compensation to the angle-data of measuring;
Power-supply system is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, in order to power supply to be provided;
Beam type shell, described obliquity sensor, filter unit, processor, power-supply system are arranged in this beam type shell.
2. digitizing beam type inclinator according to claim 1 is characterized in that:
Described beam type shell comprises loam cake, square tube, end socket, and square tube is as the main body of beam type shell, and loam cake is arranged on the square tube, and end socket is arranged at the both sides of square tube.
3. digitizing beam type inclinator according to claim 1 is characterized in that:
Described filter unit is the hardware filtering unit, in order to filtering in the simulating signal bandwidth that obliquity sensor is exported.
4. digitizing beam type inclinator according to claim 1 is characterized in that:
Described inclinator further comprises high low temperature sweat box, does compensation in order to the temperature at zero point of inclinator is floated.
5. digitizing beam type inclinator according to claim 1 is characterized in that:
Described inclinator further comprises high low temperature sweat box, does compensation in order to the Sensitivity Temperature of inclinator is floated.
6. digitizing beam type inclinator according to claim 1 is characterized in that:
Described inclinator further comprises one or more in 232 output interfaces, 485 output interfaces, 422 output interfaces, V/I output interface, LCD output interface, the CAN interface.
7. digitizing beam type inclinator according to claim 1 is characterized in that:
Described processor is the MCU of built-in 24bit analog-to-digital conversion unit AD.
8. digitizing beam type inclinator according to claim 1 is characterized in that:
Described beam type outer cover length is 1 meter, 2 meters or 3 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320059480 CN203148429U (en) | 2013-01-31 | 2013-01-31 | Digital beam type tilt meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320059480 CN203148429U (en) | 2013-01-31 | 2013-01-31 | Digital beam type tilt meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203148429U true CN203148429U (en) | 2013-08-21 |
Family
ID=48975946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320059480 Expired - Fee Related CN203148429U (en) | 2013-01-31 | 2013-01-31 | Digital beam type tilt meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203148429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444442A (en) * | 2015-11-08 | 2018-08-24 | 湖北文理学院 | A kind of obliquity sensor and the equipment for measuring the rail upper and lower surface gradient |
-
2013
- 2013-01-31 CN CN 201320059480 patent/CN203148429U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444442A (en) * | 2015-11-08 | 2018-08-24 | 湖北文理学院 | A kind of obliquity sensor and the equipment for measuring the rail upper and lower surface gradient |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160131 |
|
| EXPY | Termination of patent right or utility model |