CN202661064U - Digital universal serial bus (USB) inclinometer - Google Patents
Digital universal serial bus (USB) inclinometer Download PDFInfo
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- CN202661064U CN202661064U CN 201220325280 CN201220325280U CN202661064U CN 202661064 U CN202661064 U CN 202661064U CN 201220325280 CN201220325280 CN 201220325280 CN 201220325280 U CN201220325280 U CN 201220325280U CN 202661064 U CN202661064 U CN 202661064U
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- usb
- inclinator
- processor
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- obliquity sensor
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Abstract
The utility model discloses a digital universal serial bus (USB) inclinometer, which comprises an obliquity angle sensor, a filtering unit, a processor, a digital display indexing turntable and a USB interface unit, wherein the obliquity angle sensor is used for providing a high-resolution obliquity angle; the filtering unit is used for filtering an analog signal output by the obliquity angle sensor; the processor is used for performing high-precision analog-digital conversion on the filtered analog signal output by the obliquity angle sensor; a digital signal is filtered in the processor, the output information of the obliquity angle is truly reflected, and the digitally processed signal is subjected to angle conversion; the digital display indexing turntable is used for testing the data required for linearly compensating the obliquity angle sensor and calculating a proper linear calibration coefficient; and the USB interface unit is used for outputting data for measuring the obliquity angle to external equipment. By the digital USB inclinometer, the obliquity angle sensor and a USB interface are combined together, the obliquity angle data in the measuring process can be output through the USB interface, and the USB interface can supply power to the inclinometer and support hot plug.
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 USB inclinator.
Background technology
Digitalized clinometer is a kind of with digital interface and the obliquity sensor brand-new inclinator that combines.
Generally, Digitalized clinometer is to measure object tilt variation and the time dependent instrument of pedal line in time, and digital interface is used for output; Digital interface mostly is RS232, RS485, parallel port interface, but also needs the external power supply power supply.
Use increasingly extensive trend in order to satisfy USB interface, nowadays in the urgent need to USB interface and obliquity sensor are combined, can with the equipment connection that has arbitrarily USB interface, directly from the usb bus power taking, need not external power supply, Digitalized clinometer is become a hot swappable USB device.
The utility model content
Technical problem to be solved in the utility model is: a kind of digitizing USB inclinator is provided, obliquity sensor and USB interface are combined, can export angle of inclination data in the measuring process by USB interface, USB interface can be powered to inclinator, supports hot plug.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of digitizing USB 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 truly inclination angle output information, 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 biography inclination angle 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;
Usb interface unit is connected with described processor and external unit, measures the angle of inclination data to external unit in order to output.
As a kind of preferred version of the present utility model, described inclinator also comprises power-supply system, is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, usb interface unit, in order to power supply to be provided.
As a kind of preferred version of the present utility model, described power-supply system comprises energy management system, in order to the power supply energy monitoring to be provided, according to actual measurement class demand, power consumption is done management, satisfies the requirement to the one-shot measurement time.
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 usb interface unit is connected with a power-supply system, simultaneously, usb interface unit is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, with thinking that obliquity sensor, filter unit, processor, digital display graduation rotating platform provide power supply.
The beneficial effects of the utility model are: use under the increasingly extensive trend in USB interface, the digitizing USB inclinator that the utility model proposes, the measurement at angle of inclination can be provided, the USB port that can directly connect any apparatus, directly from the usb bus power taking, need not external power supply, inclinator is become the hot swappable USB device, can satisfy commercial Application, study the in one's power measurement application demand of military project unit.Have a clear superiority in respect to existing similar Digital Dipmeter.
In addition, the utility model digitizing USB inclinator in house software is integrated from calibration algorithm, and externally shirtsleeve operation realizes the digital automatic Calibration of Digital Dipmeter itself.
Description of drawings
Fig. 1 is the composition synoptic diagram of the utility model digitizing USB inclinator.
Fig. 2 is the process flow diagram of the utility model digitizing USB dipmeter survey method.
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 USB inclinator, comprises obliquity sensor, filter unit, processor, digital display graduation rotating platform, power-supply system, usb interface unit.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, reflect truly inclination angle output information, 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 biography inclination angle 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; Usb interface unit is connected with described processor and external unit, the instrument of favouring power supply, and in order to output measurement angle of inclination data other equipment to the outside.
See also Fig. 1, in the present embodiment, described USB inclinator comprises core high precision MEMS obliquity sensor 1, hardware filtering unit 2, power-supply system 3, the MCU4 of built-in 24Bit analog-to-digital conversion unit AD, digital display graduation rotating platform (not shown), usb interface unit 5.Described MCU4 connects hardware filtering unit 2, power-supply system 3, digital display graduation rotating platform, usb interface unit 5, and described power-supply system 3 connects obliquity sensor 1, hardware filtering unit 2, digital display graduation rotating platform, usb interface unit 5.Described usb interface unit 5 connects MCU4, power-supply system 3.
Core high precision MEMS obliquity sensor 1 can provide very high angular resolution, by filtering in 2 couples of high precision MEMS of hardware filtering obliquity sensor, the 1 outputting analog signal bandwidth, the MCU of built-in 24BitAD carries out the high precision analogue conversion to the simulating signal of core high precision MEMS obliquity sensor 1 output, in the MCU in house software, do digital signal filtering, reflect truly inclination angle output information.
The MCU4 of built-in 24bit AD can carry out angular transition to signal after the digital processing, then can utilize outside high-precision digital display graduation rotating platform that obliquity sensor is made the required data of linear compensation 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 24bitAD 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
k, and 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 that gather are carried out polynomial computation, i.e. compensation data.
As shown in Figure 1, USB interface meets the USB2.0 standard, supports the RS232 interface, can be by the direct power taking of usb bus to power-supply system.
In addition, described digitizing USB inclinator further comprises high low temperature sweat box, does compensation in order to the temperature at zero point of 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 process, computing, calculate temperature compensation coefficient, and be stored in the storage space of opening up inside, later on every-inferior measurement data output all can by the temperature compensation coefficient correction, can reduce temperature to the impact of sensor well.
The zero point temperature drift compensation method comprises: 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
m, 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.
The compensation of α TCS method comprises: 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
mCalculate 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 USB inclinator, the utility model also discloses a kind of measuring method of above-mentioned digitizing USB inclinator when disclosing above-mentioned digitizing USB inclinator; See also Fig. 2, 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, reflects truly inclination angle output information;
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 S5] after the data correction, processor reaches the purpose of USB interface data output by the external the transmission of data of USB interface each time.
In sum, the digitizing USB inclinator that the utility model proposes, angle of bank measurement can be provided, the USB port that can directly connect any apparatus, directly from the usb bus power taking, need not external power supply, inclinator is become the hot swappable USB device, can satisfy commercial Application, study the in one's power measurement application demand of military project unit.Have a clear superiority in respect to existing similar Digital Dipmeter.
Rigid good, not yielding, the high-low temperature resistant of the utility model digitizing USB inclinator, good airproof performance; Simultaneously can also provide extra interface, show such as LCD.
In addition, the utility model digitizing USB inclinator in house software is integrated from calibration algorithm, and externally shirtsleeve operation realizes the digital automatic Calibration of Digital Dipmeter 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 in 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.In 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 (7)
1. digitizing USB 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 truly inclination angle output information, 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 biography inclination angle 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;
Usb interface unit is connected with described processor and external unit, measures the angle of inclination data to external unit in order to output.
2. digitizing USB inclinator according to claim 1 is characterized in that:
Described inclinator also comprises power-supply system, is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, usb interface unit, in order to power supply to be provided.
3. digitizing USB inclinator according to claim 2 is characterized in that:
Described power-supply system comprises energy management system, in order to the power supply energy monitoring to be provided, according to actual measurement class demand, power consumption is done management, satisfies the requirement to the one-shot measurement time.
4. digitizing USB 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.
5. digitizing USB 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.
6. digitizing USB 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.
7. digitizing USB inclinator according to claim 1 is characterized in that:
Described usb interface unit is connected with a power-supply system, and simultaneously, usb interface unit is connected with described obliquity sensor, filter unit, processor, digital display graduation rotating platform, with thinking that obliquity sensor, filter unit, processor, digital display graduation rotating platform provide power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325280 CN202661064U (en) | 2012-07-06 | 2012-07-06 | Digital universal serial bus (USB) inclinometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325280 CN202661064U (en) | 2012-07-06 | 2012-07-06 | Digital universal serial bus (USB) inclinometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661064U true CN202661064U (en) | 2013-01-09 |
Family
ID=47455967
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325280 Expired - Fee Related CN202661064U (en) | 2012-07-06 | 2012-07-06 | Digital universal serial bus (USB) inclinometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661064U (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 |
-
2012
- 2012-07-06 CN CN 201220325280 patent/CN202661064U/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: 20130109 Termination date: 20150706 |
|
| EXPY | Termination of patent right or utility model |