CN105136118B - A kind of intelligent temp compensation method of high-precision inclinometer - Google Patents
A kind of intelligent temp compensation method of high-precision inclinometer Download PDFInfo
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- CN105136118B CN105136118B CN201510599780.0A CN201510599780A CN105136118B CN 105136118 B CN105136118 B CN 105136118B CN 201510599780 A CN201510599780 A CN 201510599780A CN 105136118 B CN105136118 B CN 105136118B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
Abstract
The invention discloses a kind of intelligent temp compensation method of high-precision inclinometer, it is related to measurement of dip angle or inclination angle monitoring field.This method comprises the following steps：Increase heats piece and cooling piece inside inclinator, hierarchical loading/unloading cooling piece, the power for heating piece, every grade reaches that inclinator internal temperature and temperature drift data are stable within a period of time, inclinator internal temperature is set to be raised from temperature compensation lower limit temperature, simultaneously temperature and temperature drift data are recorded by certain frequency, when inclinator internal temperature rises to temperature compensation ceiling temperature, stopping heats piece work and data record.From the data of one group of numerical stability of extracting data of every grade of load/unload record, temperature drift array is saved as.When measuring inclination angle, temperature is the drift temperature of this measurement during record zero setting, and relative temperature drift value of the Current Temperatures relative to drift temperature is subtracted with current measurement value, true inclination value is obtained.The present invention can effectively improve temperature compensation precision, reduce temperature compensation workload, improve operating efficiency.
Description
Technical field
The present invention relates to measurement of dip angle or inclination angle monitoring field, a kind of intelligent temperature compensation of high-precision inclinometer is specifically related to
Method.
Background technology
With the development of science and technology, the world has stepped into the Internet of things era.Sensor is obtained from right and engineering
The main path and technological means of various information in field, its performance quality are directly connected to the accuracy of measurement result and true
Property.Inclinator is as a kind of sensor at measurement inclination angle, using widely in machinery, building and various engineerings.
Measurement of dip angle chip in inclinator has its specific temperature property using material, therefore inclinator is in normal work
When making, heat and the outside air temperature change that can be produced by internal circuit are influenceed, also can be by encapsulating structure and the shadow of material
Ring, be directly reflected as the temperature drift of measurement of dip angle data, abbreviation temperature drift.The China of Application No. 201220432150.6 is practical
New patent《High accuracy band temperature compensation dip module》Propose：Obliquity sensor and temperature sensor are closed with heat-barrier material
Come, it is then artificial to carry out temperature compensation experiment, to reach the purpose for overcoming temperature drift.
However, to artificially carry out accurate temperature compensation to highly sensitive inclinator, it is necessary to unusual harsh experimental enviroment：
Heating should be considered, avoid producing the microseism of temperature compensation environment or air current flow again as far as possible, temperature compensation workload is larger.
In addition, in order to avoid inclinator produces temperature drift before normal work is started to, inclinator is from starting to normal work
The preheated one-section time is needed before work, this occupies certain working time, causes operating efficiency to reduce.
The content of the invention
The invention aims to overcome the shortcomings of above-mentioned background technology, there is provided a kind of intelligent temperature of high-precision inclinometer
Compensating method, requirement when can reduce inclinator normal work to temperature compensation environment improves temperature compensation precision and simultaneously reduces temperature compensation workload,
Preheating time of the inclinator before normal work is started to is reduced, operating efficiency is effectively improved.
The present invention provides a kind of intelligent temp compensation method of high-precision inclinometer, comprises the following steps：
A, inclinator include measurement of dip angle chip and microcontroller, when measurement of dip angle chip internal is integrated with temperature meter
During part, set up inside inclinator and heat piece and cooling piece；When measurement of dip angle chip internal is not integrated with temperature measurement device,
Set up inside inclinator and heat piece, cooling piece and temperature sensor, temperature sensor is placed in the side of measurement of dip angle chip；
B, inclinator intelligently obtain temperature drift array：
Microcontroller inside B1, inclinator presets the temperature compensation ceiling temperature T during inclinator temperature compensationThe upper limit, temperature compensation
Lower limit temperature TLower limit；Inclinator is fixed on concrete shock insulation testing stand；Inclinator normal work is for a period of time to its internal temperature
When degree and tilt readings are stable, microprocessor control inclinator is by current inclination reading automatic balancing；
B2, microcontroller start cooling piece, and cooling piece classification carries out power loading, and every grade is loaded onto inside inclinator and reaches
Temperature and temperature drift data inside thermal balance, i.e. inclinator are stablized within a certain period of time, and cooling piece just carries out next stage power
Loading, until the temperature inside inclinator is down to TLower limitWhen following, cooling piece just stops loading power, and starts classification progress work(
Rate is unloaded, while microcontroller starts, with certain frequency collecting temperature data and temperature drift data, to be automatically saved in microcontroller
In memory, and the data gathered in every grade of uninstall process save as one group, and every grade is offloaded to inside inclinator and reaches thermal balance,
Cooling piece just carries out next stage power unloading, until the power of cooling piece is unloaded to zero；
B3, reach thermal balance inside inclinator after, microcontroller start heats piece, heat piece classification carry out power add
Carry, after every grade is loaded onto inside inclinator and reaches thermal balance, heat piece and just carry out next stage power loading, in above process
Microcontroller continues collecting temperature data and temperature drift data, is automatically saved in the memory of microcontroller, and every grade loaded
The data gathered in journey save as one group, until the temperature inside inclinator is raised to TThe upper limitWhen, heat piece and be stopped, while micro-
Controller stop recording temperature data and temperature drift data；
B4, microcontroller are handled being grouped the data being stored in microcontroller automatically：
Microcontroller extracts finally stabilised temperature value and temperature drift value in every group, is used as this from the multi-group data of preservation
The temperature drift data of group, are stored in temperature drift array, there is some column datas in temperature drift array, and n is total columns of temperature drift array, and m is
The sequence number arranged in temperature drift array, n, m are positive integer, and 4≤m≤n；The temperature value that m is arranged in temperature drift array is Tm, temperature drift number
The temperature drift value that m is arranged in group is Dm, the temperature value of the n-th row is T in temperature drift arrayn, the temperature drift value of the n-th row is D in temperature drift arrayn；
C, when using inclinator, the microcontroller inside inclinator is automatically performed temperature compensation：
C1, using inclinator measure inclination angle when, manually by the reading zero setting of inclinator, at the same record zero setting when temperature
T0, T0For the drift temperature of this measurement, TLower limit＜ T0＜ TThe upper limit；
C2, after measurement a period of time, the current inclination reading of inclinator is Ax, temperature sensor record inclinator inside
Current Temperatures are Tx, inclinator is in Current Temperatures TxUnder relative to drift temperature T0The temperature drift value of generation is Dx-0, microcontroller lead to
Data interpolating method is crossed, with reference to temperature drift array, temperature drift value D is calculatedx-0；
C3, microcontroller calculate true measurement of dip angle value A further according to below equationreal：Areal=Ax- Dx-0, inclinator to
The outer true measurement of dip angle value A of outputreal。
On the basis of above-mentioned technical proposal, microcontroller calculates temperature drift value D in step C2x-0Formula be：
Wherein, x, k, k-1, j, j-1 are the sequence number arranged in temperature drift array, and x, k, k-1, j, j-1 are positive integer, temperature drift
Temperature value in array in xth row is Tx, the temperature drift value in temperature drift array in xth row is Dx；Temperature in temperature drift array in kth row
Angle value is Tk, the temperature drift value in temperature drift array in kth row is Dk；Temperature value during kth -1 is arranged in temperature drift array is Tk-1, temperature drift number
Temperature drift value during kth -1 is arranged in group is Dk-1；Temperature value in temperature drift array in jth row is Tj, in temperature drift array in jth row
Temperature drift value is Dj；Temperature value during jth -1 is arranged in temperature drift array is Tj-1, during jth -1 is arranged in temperature drift array for temperature drift value Dj-1；
TxCorresponding two adjacent datas are classified as (Tk-1、Dk-1) and (Tk、Dk), the linear interpolation of the two adjacent datas row
Point is Dx；
Work as TLower limit＜ Tx＜ TThe upper limitWhen, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) temperature value meet condition：Tk-1
≤Tx≤Tk；Work as Tx＜ TLower limitWhen, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) take most first two columns data；Work as Tx＞ TThe upper limit
When, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) take last two column data；
Drift temperature T0Two adjacent datas are classified as (T in corresponding temperature drift arrayj-1、Dj-1) and (Tj、Dj), the two phases
The linear interpolation point of adjacent data row is D0, the two adjacent datas row in temperature value meet condition：Tj-1≤T0≤Tj。
On the basis of above-mentioned technical proposal, microcontroller described in step C2 is by being segmented three Hermites
Hermite interpolation methods, with reference to temperature drift array, calculate temperature drift value Dx-0。
It is outside during inclinator described in step B intelligently obtains temperature drift array on the basis of above-mentioned technical proposal
The temperature of environment is between -10 DEG C~35 DEG C.
On the basis of above-mentioned technical proposal, 5~20 grades of progress power load or unloads of cooling piece point in step B2.
On the basis of above-mentioned technical proposal, 10 grades of progress power load or unloads of cooling piece point in step B2.
On the basis of above-mentioned technical proposal, reach that thermal balance refers to inside inclinator in step B2：Inside inclinator
Temperature and temperature drift data were stablized in 1~2 minute.
On the basis of above-mentioned technical proposal, in step B2 microcontroller with 0.2~1HZ frequency collection temperature data and
Temperature drift data.
On the basis of above-mentioned technical proposal, microcontroller is with 0.4HZ frequency collection temperature data and temperature in step B2
Float data.
On the basis of above-mentioned technical proposal, when piece classification progress power load or unload is heated in step B3, piece is heated
The quantity of classification is identical with the quantity that cooling piece is classified.
Compared with prior art, advantages of the present invention is as follows：
(1) present invention increase inside inclinator heats piece and cooling piece, and inclinator is placed on into the experiment of concrete shock insulation
On platform, by the microcontroller inside inclinator, hierarchical loading or load shedding are carried out to cooling piece, the power for heating piece, often
Level load or unload reaches that inclinator internal temperature and temperature drift data are stable within a period of time, makes inclinator internal temperature from temperature
Mend lower limit temperature TLower limitRaise step by step, while with certain frequency record temperature and temperature drift data, inclinator internal temperature step by step on
Rise, when rising to temperature compensation ceiling temperature TThe upper limitWhen, stopping heats piece work and data record.Recorded from every grade of load or unload
In temperature and temperature drift data, the temperature and temperature drift data of one group of numerical stability are extracted, temperature drift array is saved as.When measuring inclination angle, note
Temperature is the drift temperature of this measurement when recording zero setting, when the temperature varies, Current Temperatures phase is subtracted with current measurement value
For the relative temperature drift value of drift temperature, that is, true inclination value is obtained, temperature drift array and interpolation method are then utilized with respect to temperature drift value
Obtain.Method in the present invention has good feasibility and practicality, to temperature compensation ring when can reduce inclinator normal work
The requirement in border, makes inclinator in common shock insulation experimental enviroment, can accurately be automatically performed the seizure of temperature drift data, and
It is stored in inclinator microcontroller standby.When measuring inclination angle, temperature compensation is carried out to the inclination angle of measurement using temperature drift array and repaiied
Just, real inclination value is obtained, high-precision instrument temperature compensation is completed, temperature compensation precision can be effectively improved, and reduce temperature compensation work
Measure.
(2) the high precision temp added time is realized using the method in the present invention, inclinator can be shortened from starting to normal work
Between preheating time, inclinator start after within a short period of time can normal work, operating efficiency can be effectively improved, no
Influence measurement result.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of inclinator in the embodiment of the present invention.
Fig. 2 is another structured flowchart of inclinator in the embodiment of the present invention.
Fig. 3 is the structured flowchart that inclinator is placed on concrete shock insulation testing stand in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
The embodiment of the present invention provides a kind of intelligent temp compensation method of high-precision inclinometer, comprises the following steps：
A, inclinator include measurement of dip angle chip and microcontroller, shown in Figure 1, when measurement of dip angle chip internal is integrated
When having temperature measurement device, set up inside inclinator and heat piece and cooling piece, heated piece, the power of cooling piece, specification and regard tool
Depending on body situation；It is shown in Figure 2, when measurement of dip angle chip internal is not integrated with temperature measurement device, inside inclinator
Set up and heat piece, cooling piece and temperature sensor, temperature sensor is placed in the side of measurement of dip angle chip, heats piece, cooling piece
Power, specification is determined on a case-by-case basis.
B, inclinator intelligently obtain temperature drift array：
Microcontroller inside B1, inclinator presets the temperature compensation ceiling temperature T during inclinator temperature compensationThe upper limit, temperature compensation
Lower limit temperature TLower limit.It is shown in Figure 3, inclinator is fixed on concrete shock insulation testing stand, inclinator intelligently obtains temperature drift number
During group, the temperature of external environment condition is between -10 DEG C~35 DEG C, it is allowed to which environment temperature has variation；Inclinator normal work
During a period of time to its internal temperature and stable tilt readings, microprocessor control inclinator puts current inclination reading automatically
Zero.
B2, microcontroller start cooling piece, and cooling piece classification carries out power loading, can divide 5~20 grades, preferably 10
Level, every grade is loaded onto inside inclinator and reaches thermal balance, i.e. temperature inside inclinator and temperature drift data within a certain period of time (1
~2 minutes) to stablize, cooling piece just carries out next stage power loading, until the temperature inside inclinator is down to TLower limitWhen following,
Cooling piece just stops loading power, and starts classification progress power unloading, while microcontroller starts to gather temperature with certain frequency
Degrees of data and temperature drift data, frequency can be 0.2~1HZ, preferably 0.4HZ, be automatically saved in the memory of microcontroller,
And the data gathered in every grade of uninstall process save as one group, every grade is offloaded to inside inclinator and reaches thermal balance, and cooling piece is
Next stage power unloading is carried out, until the power of cooling piece is unloaded to zero.
B3, reach thermal balance inside inclinator after, microcontroller start heats piece, heat piece classification carry out power add
Carry, the quantity for heating piece classification is preferably identical with the quantity that cooling piece is classified, be divided into 5~20 grades, preferably 10 grades, every grade of loading
Reached inside to inclinator after thermal balance, heat piece and just carry out next stage power loading, in above process microcontroller after
Continuous collecting temperature data and temperature drift data, are automatically saved in the memory of microcontroller, and gathered in every grade of loading procedure
Data save as one group, until the temperature inside inclinator is raised to TThe upper limitWhen, heat piece and be stopped, while microcontroller stops
Record temperature data and temperature drift data.
B4, microcontroller are handled being grouped the data being stored in microcontroller automatically：
Microcontroller extracts finally stabilised temperature value and temperature drift value in every group, is used as this from the multi-group data of preservation
The temperature drift data of group, are stored in temperature drift array, ginseng is shown in Table 1, and have some column datas in temperature drift array, and n is temperature drift array
Total columns, m is the sequence number that arranges in temperature drift array, and n, m are positive integer, and 4≤m≤n；The temperature that m is arranged in temperature drift array
It is worth for Tm, the temperature drift value that m is arranged in temperature drift array is Dm, the temperature value of the n-th row is T in temperature drift arrayn, the n-th row in temperature drift array
Temperature drift value be Dn；The unit of temperature drift value is angular unit " (second), 1 "=(1/3600) °, 1 °=3600 ".
The data of table 1, temperature drift array
| Row sequence number | 1 | 2 | 3 | 4 | … | m | … | n |
| T/ DEG C of temperature | T1 | T2 | T3 | T4 | … | Tm | … | Tn |
| Temperature drift D/ " | D1 | D2 | D3 | D4 | … | Dm | … | Dn |
C, when using inclinator, the microcontroller inside inclinator is automatically performed temperature compensation：
When C1, measurement inclination angle actual using inclinator, reading for convenience, manually by the reading zero setting of inclinator, simultaneously
Record temperature T during zero setting0(such as zero setting again, then temperature during last time zero setting being covered with temperature during zero setting again), T0For this
The drift temperature of secondary measurement, TLower limit＜ T0＜ TThe upper limit.With the change of external environment (temperature, illumination), inclinator internal temperature hair
Changing and produce temperature drift.
C2, after measurement a period of time, the current inclination reading of inclinator is Ax, temperature sensor record inclinator inside
Current Temperatures are Tx, inclinator is in Current Temperatures TxUnder relative to drift temperature T0The temperature drift value of generation is Dx-0, microcontroller lead to
Cross data interpolating method combination temperature drift array and calculate temperature drift value Dx-0。
Microcontroller calculates temperature drift value D in step C2x-0Specific formula be：
Wherein, x, k, k-1, j, j-1 are the sequence number arranged in temperature drift array, and x, k, k-1, j, j-1 are positive integer, temperature drift
Temperature value in array in xth row is Tx, the temperature drift value in temperature drift array in xth row is Dx；Temperature in temperature drift array in kth row
Angle value is Tk, the temperature drift value in temperature drift array in kth row is Dk；Temperature value during kth -1 is arranged in temperature drift array is Tk-1, temperature drift number
Temperature drift value during kth -1 is arranged in group is Dk-1；Temperature value in temperature drift array in jth row is Tj, in temperature drift array in jth row
Temperature drift value is Dj；Temperature value during jth -1 is arranged in temperature drift array is Tj-1, during jth -1 is arranged in temperature drift array for temperature drift value Dj-1；
TxCorresponding two adjacent datas are classified as (Tk-1、Dk-1) and (Tk、Dk), the linear interpolation of the two adjacent datas row
Point is Dx；
Work as TLower limit＜ Tx＜ TThe upper limitWhen, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) temperature value meet condition：Tk-1
≤Tx≤Tk；Work as Tx＜ TLower limitWhen, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) take most first two columns data；Work as Tx＞ TThe upper limit
When, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) take last two column data.
Drift temperature T0Two adjacent datas are classified as (T in corresponding temperature drift arrayj-1、Dj-1) and (Tj、Dj), the two phases
The linear interpolation point of adjacent data row is D0, and the two adjacent datas row in temperature value meet condition：Tj-1≤T0≤Tj。
Generally, above-mentioned data interpolating method uses basic linear interpolation method；If temperature compensation experimental enviroment is preferably,
When temperature compensation required precision is higher, data interpolating method can be from three Hermite (Hermite) interpolation methods of segmentation.
C3, microcontroller calculate true measurement of dip angle value A further according to below equationreal：Areal=Ax- Dx-0, inclinator to
The outer true measurement of dip angle value A of outputreal。
It is described in detail below by a specific embodiment.
S1, inclinator include measurement of dip angle chip and microcontroller, are set up inside inclinator and heat piece, cooling piece and temperature
Sensor is spent, temperature sensor is placed in the side of measurement of dip angle chip, shown in Figure 2.Inclinator measurement in the present embodiment
Resolution ratio reaches 1 ", precision 5 ", range ± 15 ° belong to high-precision inclinometer.
S2, inclinator intelligently obtain temperature drift array：
S201, it can typically be worked between -20 DEG C~80 DEG C in view of electronic instrument, the microcontroller inside inclinator
Preset the temperature compensation ceiling temperature T of inclinator temperature compensation processThe upper limitFor 70 DEG C, temperature compensation lower limit temperature TLower limitFor -15 DEG C.Referring to Fig. 3
It is shown, inclinator is fixed on concrete shock insulation testing stand.During inclinator intelligently obtains temperature drift array, external environment condition
Temperature between -10 DEG C~35 DEG C.Inclinator normal work is when its internal temperature and tilt readings are stable for a period of time, micro-control
Device processed controls inclinator by current inclination reading automatic balancing.
S202, microcontroller start cooling piece, and 10 grades of cooling piece point carries out power loadings, and every grade is loaded onto inside inclinator
Reach that temperature and temperature drift data inside thermal balance, i.e. inclinator are stablized within a period of time (1 minute), cooling piece is just carried out
Next stage power is loaded, until when the temperature inside inclinator is down to less than -15 DEG C, cooling piece just stops loading power, and opens
Begin to be classified and carry out power unloading, while microcontroller starts the frequency collection temperature data and temperature drift data with 0.4HZ, it is automatic to protect
Exist in the memory of microcontroller, and the data gathered in every grade of uninstall process save as one group, every grade is offloaded to inclinator
Inside reaches thermal balance, and cooling piece just carries out next stage power unloading, until the power of cooling piece is unloaded to zero；
S203, reach thermal balance inside inclinator after, microcontroller start heats piece, heat piece also divide 10 grades progress work(
Rate is loaded, and after every grade is loaded onto inside inclinator and reaches thermal balance, is heated piece and is just carried out next stage power loading, in above-mentioned mistake
Microcontroller continues collecting temperature data and temperature drift data in journey, is automatically saved in the memory of microcontroller, and every grade adds
The data gathered during load save as one group, until when the temperature inside inclinator is more than 70 DEG C, heating piece and being stopped, together
When microcontroller stop recording temperature value and temperature drift value.
S204, microcontroller are handled being grouped the data being stored in microcontroller automatically：
Microcontroller is sieved from the multi-group data of preservation, extracts finally stabilised temperature value and temperature drift value in every group, as
The temperature drift data of the group, are stored in temperature drift array, ginseng is shown in Table 2.
Table 2, temperature drift array example
| Array sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| T/ DEG C of temperature | -14.5 | -6.3 | 2.0 | 10.2 | 18.3 | 26.6 | 34.9 | 43.3 | 51.4 | 59.7 | 67.8 |
| Temperature drift D/ " | -306 | -180 | -75 | 15 | 102 | 201 | 318 | 444 | 579 | 735 | 912 |
S3, when using inclinator, the microcontroller inside inclinator is automatically performed temperature compensation：
S301, using inclinator measure inclination angle when, manually by the reading zero setting of inclinator, at the same record zero setting when temperature
T0, T0For the drift temperature of this measurement, TLower limit＜ T0＜ TThe upper limit；
S302, after measurement a period of time, the current inclination reading of inclinator is Ax, temperature sensor record inclinator inside
Current Temperatures be Tx, inclinator is in Current Temperatures TxUnder relative to drift temperature T0The temperature drift value of generation is Dx-0, microcontroller
By data interpolating method, with reference to temperature drift array, temperature drift value D is calculatedx-0；
S303, microcontroller calculate true measurement of dip angle value A further according to below equationreal：Areal=Ax- Dx-0, inclinator
Outwards export true measurement of dip angle value Areal。
Tested for actual use situation, temperature compensation effect is as follows：
During measurement inclination angle actual using inclinator, inclinator is starting 2 minutes (demonstrate and be not required to longer preheating time)
Afterwards, manually by tilt readings zero setting, and then inclinator one low-angle of rotation (1800 "~3600 ") is static afterwards, now measures
It is worth for 2391 " (1 °=3600 "), and record 21.2 DEG C of temperature value now.Then using (50~100 watts) irradiations of fluorescent lamp
Inclinator, to simulate true use environment, inclinator internal temperature can be raised, since 25 DEG C, and an inclination angle is recorded every 8 DEG C
Reading, when measured temperature is increased to 49 °, turns off fluorescent lamp, inclinator natural cooling, until inclinator internal temperature is one
(2 minutes) stable, tilt readings during record equilibrium temperature in the section time.
The test data of table 3, temperature compensation effect
| Sequentially | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| T/ DEG C of temperature | 21.2 | 25 | 33 | 41 | 49 | 41 | 33 | 25 | 23.8 |
| Tilt readings A/ " | 2391 | 2385 | 2389 | 2396 | 2397 | 2392 | 2387 | 2386 | 2389 |
| Temperature drift D1/ " | 0 | -6 | -2 | 5 | 6 | 1 | -4 | -5 | -2 |
Specific test result ginseng is shown in Table 3, can table 3 understand：Temperature drift problem has obtained good control.
Method in the present invention is simple and easy to apply, makes inclinator in common shock insulation experimental enviroment, can accurately certainly
The dynamic seizure for completing temperature drift data, and it is standby to be stored in inclinator microcontroller.When measuring inclination angle, temperature drift array is utilized
Temperature compensation amendment is carried out to the inclination angle of measurement, real inclination value is obtained, completes high-precision instrument temperature compensation；Side in the present invention
The high precision temp added time that method is carried out, can effectively shorten after inclinator preheating time, startup in the short period can normal work
Make, and do not interfere with measurement result.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these modifications and change
Type is within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content not being described in detail in specification is known to the skilled person.
Claims (10)
1. the intelligent temp compensation method of a kind of high-precision inclinometer, it is characterised in that comprise the following steps：
A, inclinator include measurement of dip angle chip and microcontroller, when measurement of dip angle chip internal is integrated with temperature measurement device
When, set up inside inclinator and heat piece and cooling piece；When measurement of dip angle chip internal is not integrated with temperature measurement device,
Set up inside inclinator and heat piece, cooling piece and temperature sensor, temperature sensor is placed in the side of measurement of dip angle chip；
B, inclinator intelligently obtain temperature drift array：
Microcontroller inside B1, inclinator presets the temperature compensation ceiling temperature T during inclinator temperature compensationThe upper limit, temperature compensation lower limit
Temperature TLower limit；Inclinator is fixed on concrete shock insulation testing stand；Inclinator normal work for a period of time to its internal temperature and
When tilt readings are stable, microprocessor control inclinator is by current inclination reading automatic balancing；
B2, microcontroller start cooling piece, and cooling piece classification carries out power loading, and every grade is loaded onto inside inclinator and reaches that heat is flat
Weighing apparatus, i.e. temperature inside inclinator and temperature drift data are stablized within a certain period of time, and cooling piece just carries out next stage power loading,
Until the temperature inside inclinator is down to TLower limitWhen following, cooling piece just stop load power, and start classification carry out power unload
Carry, while microcontroller starts to be automatically saved in the storage of microcontroller with certain frequency collecting temperature data and temperature drift data
In device, and the data gathered in every grade of uninstall process save as one group, and every grade is offloaded to inside inclinator and reaches thermal balance, freezes
Piece just carries out next stage power unloading, until the power of cooling piece is unloaded to zero；
B3, reach thermal balance inside inclinator after, microcontroller start heats piece, heat piece classification carry out power loading, often
Level is loaded onto inside inclinator reach thermal balance after, heat piece and just carry out next stage power loading, in above process micro-control
Device processed continues collecting temperature data and temperature drift data, is automatically saved in the memory of microcontroller, and in every grade of loading procedure
The data of collection save as one group, until the temperature inside inclinator is raised to TThe upper limitWhen, heat piece and be stopped, while microcontroller
Device stop recording temperature data and temperature drift data；
B4, microcontroller are handled being grouped the data being stored in microcontroller automatically：
Microcontroller extracts finally stabilised temperature value and temperature drift value in every group, is used as the group from the multi-group data of preservation
Temperature drift data, are stored in temperature drift array, there is some column datas in temperature drift array, and n is total columns of temperature drift array, and m is temperature drift
The sequence number arranged in array, n, m are positive integer, and 4≤m≤n；The temperature value that m is arranged in temperature drift array is Tm, in temperature drift array
The temperature drift value of m row is Dm, the temperature value of the n-th row is T in temperature drift arrayn, the temperature drift value of the n-th row is D in temperature drift arrayn；
C, when using inclinator, the microcontroller inside inclinator is automatically performed temperature compensation：
C1, using inclinator measure inclination angle when, manually by the reading zero setting of inclinator, at the same record zero setting when temperature T0, T0For
The drift temperature this time measured, TLower limit＜ T0＜ TThe upper limit；
C2, after measurement a period of time, the current inclination reading of inclinator is Ax, temperature sensor records current inside inclinator
Temperature is Tx, inclinator is in Current Temperatures TxUnder relative to drift temperature T0The temperature drift value of generation is Dx-0, microcontroller passes through number
According to interpolation method, with reference to temperature drift array, temperature drift value D is calculatedx-0；
C3, microcontroller calculate true measurement of dip angle value A further according to below equationreal：Areal=Ax- Dx-0, inclinator is outwards defeated
Go out true measurement of dip angle value Areal。
2. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 1, it is characterised in that：Microcontroller in step C2
Calculate temperature drift value Dx-0Formula be：
<mrow>
<msub>
<mi>D</mi>
<mrow>
<mi>x</mi>
<mo>-</mo>
<mn>0</mn>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>D</mi>
<mi>x</mi>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mn>0</mn>
</msub>
<mo>=</mo>
<mo>&lsqb;</mo>
<mfrac>
<mrow>
<msub>
<mi>D</mi>
<mi>k</mi>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mrow>
<mi>k</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
<mrow>
<msub>
<mi>T</mi>
<mi>k</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>k</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>T</mi>
<mi>k</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>k</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>D</mi>
<mrow>
<mi>k</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
<mo>&rsqb;</mo>
<mo>-</mo>
<mo>&lsqb;</mo>
<mfrac>
<mrow>
<msub>
<mi>D</mi>
<mi>j</mi>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mrow>
<mi>j</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
<mrow>
<msub>
<mi>T</mi>
<mi>j</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>j</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>T</mi>
<mi>x</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>j</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>D</mi>
<mrow>
<mi>j</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
<mo>&rsqb;</mo>
<mo>;</mo>
</mrow>
Wherein, x, k, k-1, j, j-1 are the sequence number arranged in temperature drift array, and x, k, k-1, j, j-1 are positive integer, temperature drift array
Temperature value in middle xth row is Tx, the temperature drift value in temperature drift array in xth row is Dx；Temperature value in temperature drift array in kth row
For Tk, the temperature drift value in temperature drift array in kth row is Dk；Temperature value during kth -1 is arranged in temperature drift array is Tk-1, in temperature drift array
Temperature drift value during kth -1 is arranged is Dk-1；Temperature value in temperature drift array in jth row is Tj, the temperature drift in temperature drift array in jth row
It is worth for Dj；Temperature value during jth -1 is arranged in temperature drift array is Tj-1, during jth -1 is arranged in temperature drift array for temperature drift value Dj-1；
TxCorresponding two adjacent datas are classified as (Tk-1、Dk-1) and (Tk、Dk), the linear interpolation point of the two adjacent datas row is
Dx；
Work as TLower limit＜ Tx＜ TThe upper limitWhen, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) temperature value meet condition：Tk-1≤Tx≤
Tk；Work as Tx＜ TLower limitWhen, two adjacent datas arrange (Tk-1、Dk-1) and (Tk、Dk) take most first two columns data；Work as Tx＞ TThe upper limitWhen, two
Adjacent data arranges (Tk-1、Dk-1) and (Tk、Dk) take last two column data；
Drift temperature T0Two adjacent datas are classified as (T in corresponding temperature drift arrayj-1、Dj-1) and (Tj、Dj), the two consecutive numbers
It is D according to the linear interpolation point of row0, the two adjacent datas row in temperature value meet condition：Tj-1≤T0≤Tj。
3. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 1, it is characterised in that：Micro-control described in step C2
Device processed, with reference to temperature drift array, calculates temperature drift value D by being segmented three Hermite Hermite interpolation methodsx-0。
4. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 1, it is characterised in that：Inclination angle described in step B
During instrument intelligently obtains temperature drift array, the temperature of external environment condition is between -10 DEG C~35 DEG C.
5. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 1, it is characterised in that：Cooling piece point in step B2
5~20 grades of progress power load or unloads.
6. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 5, it is characterised in that：Cooling piece point in step B2
10 grades of progress power load or unloads.
7. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 1, it is characterised in that：In step B2 in inclinator
Portion reaches that thermal balance refers to：Temperature and temperature drift data inside inclinator were stablized in 1~2 minute.
8. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 1, it is characterised in that：Microcontroller in step B2
With 0.2~1HZ frequency collection temperature data and temperature drift data.
9. the intelligent temp compensation method of high-precision inclinometer as claimed in claim 8, it is characterised in that：Microcontroller in step B2
With 0.4HZ frequency collection temperature data and temperature drift data.
10. the intelligent temp compensation method of high-precision inclinometer as claimed in any one of claims 1-9 wherein, it is characterised in that：Step
When piece classification progress power load or unload is heated in B3, the quantity for heating piece classification is identical with the quantity that cooling piece is classified.
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