阅读说明：本技术 基于北斗定位的终端楼层判定装置及方法 (Terminal floor judging device and method based on Beidou positioning ) 是由 郑清秋 王杰 常业图 肖绎霖 许华锋 于 2021-09-02 设计创作，主要内容包括：本发明涉及施工现场定位技术领域,具体地说,涉及一种基于北斗定位的终端楼层判定装置及方法。该装置包括用于佩戴于现场人员处的本体,本体处设置气压计、第一超声波测距传感器、第二超声波测距传感器及本地处理模块；气压计用于采集一楼的高度h-(0)及当前所处楼层的高度h,第一超声波测距传感器用于采集楼层的顶部至本体的距离h-(1),第二超声波测距传感器用于采集楼层的底部至本体的距离h-(2),本地处理模块用于根据公式计算当前所处楼层数F；其中,为向上取整运算,Δh＝h-(1)+h-(2)+h’,h’为第一超声波测距传感器与第二超声波测距传感器在竖直方向上的间距。该方法基于上述装置实现。本发明能够较佳地实现在室内对楼层数的判断。(The invention relates to the technical field of construction site positioning, in particular to a terminal floor judgment device and method based on Beidou positioning. The device comprises a body which is worn on site personnel, wherein the body is provided with a barometer, a first ultrasonic ranging sensor, a second ultrasonic ranging sensor and a local processing module; the barometer is used for acquiring the height h of the first floor 0 And the height h of the floor where the first ultrasonic ranging sensor is located, and the first ultrasonic ranging sensor is used for acquiring the distance h from the top of the floor to the body 1 The second ultrasonic ranging sensor is used for collecting the distance h from the bottom of the floor to the body 2 The local processing module is used for generating a formula Calculating the number F of the current floors; wherein the content of the first and second substances, for rounding-up, Δ h ═ h 1 +h 2 And + h ', h' is the distance between the first ultrasonic ranging sensor and the second ultrasonic ranging sensor in the vertical direction. The method is realized based on the device. The invention can better judge the floor number indoors.)

1. Terminal floor based on big dipper locationThe determination device is characterized in that: the device comprises a body (10) worn on site personnel, wherein a barometer (13a), a first ultrasonic ranging sensor (16), a second ultrasonic ranging sensor (17) and a local processing module (13e) are arranged on the body (10); the barometer (13a) is used for acquiring the height h of the first floor₀The height h of the floor where the building is located at present, and the first ultrasonic ranging sensor (16) is used for acquiring the distance h from the top of the floor to the body (10)₁The second ultrasonic ranging sensor (17) is used for collecting the distance h from the bottom of the floor to the body (10)₂A local processing module (13e) for processing the data according to a formulaCalculating the number F of the current floors; wherein the content of the first and second substances,for rounding-up, Δ h ═ h₁+h₂And + h ', h' is the distance between the first ultrasonic ranging sensor (16) and the second ultrasonic ranging sensor (17) in the vertical direction.

2. The Beidou positioning-based terminal floor determination device according to claim 1, wherein: a gyroscope sensor (13b) is further arranged at the body (10), the gyroscope sensor (13b) can be used for measuring the inclination angle theta of the body (10) relative to the vertical direction, and delta h is (h)₁+h₂+h’)cosθ。

3. The Beidou positioning-based terminal floor determination device according to claim 2, wherein: the Beidou positioning module (13c) is further arranged at the body (10), and the Beidou positioning module (13c) is used for collecting coordinates of field personnel outdoors.

4. The Beidou positioning-based terminal floor determination device according to claim 3, wherein: the body (10) is also provided with a wireless communication module (13d), and the wireless communication module (13d) is used for realizing data interaction between the local processing module (13e) and the processing platform module.

5. The Beidou positioning-based terminal floor determination device according to claim 4, wherein: the body (10) is also provided with a battery unit (12), and the battery unit (12) is used for supplying power.

6. The Beidou positioning-based terminal floor determination device according to claim 5, wherein: the body (10) is provided with a shell (11), a placing cavity (11a) with one side opened is arranged in the shell (11), and a cover plate (14) is arranged at the opening of the placing cavity (11 a); a main circuit board (13) is arranged in the placing cavity (11a), and the barometer (13a), the gyroscope sensor (13b), the Beidou positioning module (13c), the wireless communication module (13d) and the local processing module (13e) are all arranged at the main circuit board (13); the battery unit (12) is provided in the placement chamber (11a) and is used for supplying power to the main circuit board (13).

7. The Beidou positioning-based terminal floor determination device according to claim 6, wherein: the upside and the downside of casing (11) all set up the intercommunication and place the ultrasonic ranging sensor mounting hole of chamber (11a), and corresponding ultrasonic ranging sensor mounting hole department is located respectively in first ultrasonic ranging sensor (16) and second ultrasonic ranging sensor (17), and first ultrasonic ranging sensor (16) and second ultrasonic ranging sensor (17) are connected with main circuit board (13) through power supply line and data line.

8. The terminal floor judging method based on Beidou positioning comprises the following steps:

step S1, obtaining the height h of the first floor₀And the height h of the floor where the current building is located;

step S2, acquiring the height delta h of the floor where the current building is located;

step S3, according to the formulaAnd acquiring the current floor number F.

9. The method of claim 8The terminal floor judging method based on Beidou positioning is characterized by comprising the following steps: in step S2, the distance h from the first ultrasonic ranging sensor (16) to the top of the floor is acquired₁The distance h from the second ultrasonic ranging sensor (17) to the bottom of the floor is acquired₂According to the formula Δ h ═ h₁+h₂And h 'is used for calculating the height delta h of the floor where the current floor is located, and h' is the distance between the first ultrasonic ranging sensor (16) and the second ultrasonic ranging sensor (17) in the vertical direction.

10. The Beidou positioning-based terminal floor determination method according to claim 9, characterized in that: the measuring paths of the first ultrasonic ranging sensor (16) and the second ultrasonic ranging sensor (17) are parallel or positioned on the same straight line, the inclination angle theta between the measuring paths of the first ultrasonic ranging sensor (16) and the second ultrasonic ranging sensor (17) and the vertical direction is acquired, and delta h is (h)₁+h₂+h’)cosθ。

Technical Field

The invention relates to the technical field of construction site positioning, in particular to a terminal floor judgment device and method based on Beidou positioning.

Background

At present, big dipper positioning terminal is when indoor use, shelters from satellite positioning signal's influence by the house, and indoor unable location although some terminals have the barometer, but can only read the altitude value, can't judge the floor. It is difficult to achieve indoor positioning of field personnel.

Disclosure of Invention

The invention provides a terminal floor judging device based on Beidou positioning, which can overcome certain defects in the prior art.

The terminal floor judging device based on Beidou positioning comprises a body worn on site personnel, wherein a barometer, a first ultrasonic ranging sensor, a second ultrasonic ranging sensor and a local processing module are arranged on the body; the barometer is used for acquiring the height h of the first floor₀And the height h of the floor where the first ultrasonic ranging sensor is located, and the first ultrasonic ranging sensor is used for acquiring the distance h from the top of the floor to the body₁The second ultrasonic ranging sensor is used for collecting the distance h from the bottom of the floor to the body₂The local processing module is used for generating a formulaCalculating the number F of the current floors; wherein the content of the first and second substances,for rounding-up, Δ h ═ h₁+h₂And + h ', h' is the distance between the first ultrasonic ranging sensor and the second ultrasonic ranging sensor in the vertical direction.

By the aid of the device, when field personnel enter an area which cannot be covered by Beidou satellite signals such as indoors, the height of the personnel can be detected through the barometer 13a, and therefore the personnel can be better positioned under the condition that the Beidou positioning module cannot work normally.

Preferably, a gyroscope sensor is further provided at the body, and the gyroscope sensor can be used for measuring the inclination angle theta of the body relative to the vertical direction, and delta h (h)₁+h₂+ h') cos θ. Therefore, the correction of the measured value of the floor height can be better realized, and the improvement of the positioning precision is realized.

As preferred, body department still establishes big dipper orientation module, and big dipper orientation module is used for gathering on-the-spot personnel's coordinate outdoors. The positioning of field personnel outdoors can be preferably achieved.

Preferably, the body is further provided with a wireless communication module, and the wireless communication module is used for realizing data interaction between the local processing module and the processing platform module. The positioning information can be preferably sent to the processing platform module.

Preferably, a battery unit is further arranged at the body and used for supplying power. Thus enabling the body 10 to preferably operate independently.

Preferably, the body is provided with a shell, a placing cavity with an opening at one side is arranged in the shell, and a cover plate is arranged at the opening of the placing cavity; the main circuit board is arranged in the placing cavity, and the barometer, the gyroscope sensor, the Beidou positioning module, the wireless communication module and the local processing module are all arranged at the main circuit board; the battery unit is arranged in the placing cavity and used for supplying power to the main circuit board. Therefore, the structure is reasonable and the carrying is convenient.

As preferred, the upside and the downside of casing all set up the intercommunication and place the ultrasonic ranging sensor mounting hole in chamber, and corresponding ultrasonic ranging sensor mounting hole department is located respectively to first ultrasonic ranging sensor and second ultrasonic ranging sensor, and first ultrasonic ranging sensor and second ultrasonic ranging sensor pass through the power supply line and the data line is connected with main circuit board. The installation of the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 can be preferably achieved.

In addition, based on any one of the above terminal floor determination devices based on Beidou positioning, the invention also provides a terminal floor determination method based on Beidou positioning, which comprises the following steps:

step S1, obtaining the height h of the first floor₀And the height h of the floor where the current building is located;

step S2, acquiring the height delta h of the floor where the current building is located;

step S3, according to the formulaAnd acquiring the current floor number F.

So that the indoor positioning of the field personnel can be preferably realized.

Preferably, in step S2, the distance h to the top of the floor is acquired by the first ultrasonic ranging sensor₁And acquiring the distance h from the second ultrasonic ranging sensor to the bottom of the floor₂According to the formula Δ h ═ h₁+h₂And h 'calculating the height delta h of the floor where the current floor is located, wherein h' is the distance between the first ultrasonic ranging sensor and the second ultrasonic ranging sensor in the vertical direction. The height of the current floor can be preferably measured.

Preferably, the measurement paths of the first ultrasonic ranging sensor and the second ultrasonic ranging sensor are parallel or on the same straight line, and the inclination angle θ between the measurement paths of the first ultrasonic ranging sensor and the second ultrasonic ranging sensor and the vertical direction is acquired, and Δ h ═ h (h)₁+h₂+ h') cos θ. Therefore, the measurement error can be eliminated better, and the measurement precision is improved.

Drawings

FIG. 1 is a schematic structural view of a body in embodiment 1;

fig. 2 is an exploded view of the body in example 1.

Fig. 3 is a schematic system block diagram of a terminal floor determination device based on Beidou positioning in embodiment 1;

fig. 4 is a schematic diagram of a positioning method in embodiment 2.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

The embodiment provides a terminal floor judging device based on Beidou positioning, which comprises a body 10 worn on site personnel, wherein a barometer 13a, a first ultrasonic ranging sensor 16, a second ultrasonic ranging sensor 17 and a local processing module 13e are arranged at the body 10; the barometer 13a is used for acquiring the height h of the first floor₀And the height h of the floor where the first ultrasonic ranging sensor 16 is located, and the first ultrasonic ranging sensor is used for acquiring the distance h from the top of the floor to the body 10₁The second ultrasonic ranging sensor 17 is used for collecting the distance h from the bottom of the floor to the body 10₂The local processing module 13e is used for processing according to the formulaCalculating the number F of the current floors; wherein the content of the first and second substances,for rounding-up, Δ h ═ h₁+h₂+ h ', h' is the vertical distance between the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17.

Through the device in this embodiment for on-the-spot personnel can realize the detection to personnel's height through barometer 13a when getting into the unable region that covers of big dipper satellite signal such as indoor, so can realize the location to personnel under the unable normal condition of working of big dipper orientation module better.

The scheme in the embodiment is particularly suitable for people in house buildingsPositioning of persons, passing through the height h of the first floor₀And the height h of the floor where the site personnel are located can be obtained better, the height of the floor can be known better through the data measured by the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17, the floor where the relevant site personnel are located can be obtained better by assuming that the heights of the floors are consistent, and therefore the positioning of the site personnel can be realized better.

In this embodiment, a gyroscope sensor 13b is further disposed at the main body 10, and the gyroscope sensor 13b can be used for measuring an inclination angle θ of the main body 10 in comparison with the vertical direction, where Δ h (h) is₁+h₂+ h') cos θ. Therefore, the correction of the measured value of the floor height can be better realized, and the improvement of the positioning precision is realized.

In this embodiment, body 10 department still establishes big dipper orientation module 13c, and big dipper orientation module 13c is used for gathering on-the-spot personnel's coordinate outdoors. The positioning of field personnel outdoors can be preferably achieved.

In this embodiment, the main body 10 is further provided with a wireless communication module 13d, and the wireless communication module 13d is used for realizing data interaction between the local processing module 13e and the processing platform module. The positioning information can be preferably sent to the processing platform module.

In this embodiment, a battery unit 12 is further disposed at the body 10, and the battery unit 12 is used for supplying power. Thus enabling the body 10 to preferably operate independently.

In addition, the body 10 has a housing 11, a placing cavity 11a with one side opened is arranged in the housing 11, and a cover plate 14 is arranged at the opening of the placing cavity 11 a; a main circuit board 13 is arranged in the placing cavity 11a, and the barometer 13a, the gyroscope sensor 13b, the Beidou positioning module 13c, the wireless communication module 13d and the local processing module 13e are all arranged at the main circuit board 13; the battery unit 12 is provided in the placing cavity 11a and is used to supply power to the main circuit board 13. Therefore, the structure is reasonable and the carrying is convenient.

In addition, the upper side and the lower side of the shell 11 are provided with ultrasonic ranging sensor mounting holes communicated with the placing cavity 11a, the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 are respectively arranged at the corresponding ultrasonic ranging sensor mounting holes, and the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 are connected with the main circuit board 13 through power supply lines and data lines. The installation of the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 can be preferably achieved.

Based on the device in the embodiment, the embodiment also provides a terminal floor determination method based on Beidou positioning, which comprises the following steps:

step S1, obtaining the height h of the first floor₀And the height h of the floor where the current building is located;

step S2, acquiring the height delta h of the floor where the current building is located;

step S3, according to the formulaAnd acquiring the current floor number F.

So that the indoor positioning of the field personnel can be preferably realized.

Wherein the height h of the first floor₀Is a fixed value and can be preset in the local processing module 13 e.

In step S2, the first ultrasonic ranging sensor 16 collects the distance h to the top of the floor₁The distance h from the second ultrasonic ranging sensor 17 to the bottom of the floor is acquired₂According to the formula Δ h ═ h₁+h₂And + h 'calculating the height delta h of the floor where the current floor is located, wherein h' is the distance between the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 in the vertical direction. The height of the current floor can be preferably measured.

In addition, the measuring paths of the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 are parallel or on the same straight line, and the inclination angle θ between the measuring paths of the first ultrasonic ranging sensor 16 and the second ultrasonic ranging sensor 17 and the vertical direction is acquired, and Δ h is (h)₁+h₂+ h') cos θ. Therefore, the measurement error can be eliminated better, and the measurement precision is improved.

In the present embodiment, the main body 10 constitutes a terminal device, and thus can be preferably portable.

Example 2

In view of the fact that in embodiment 1, when the height measurement of the barometer is adopted, the accuracy is greatly affected by weather conditions and day, the present embodiment also provides a method for calibrating the reference air pressure of the barometer.

As shown in fig. 4, the method in this embodiment includes the following steps:

step S21, establishing a climate model, wherein the climate model is used for representing the corresponding relation between the weather information sequence at the historical moment and the sea level air pressure value;

step S22, acquiring a time meteorological information sequence of the current time based on the Beidou positioning module, and judging historical sea level air pressure values under the historical time with the most similar time meteorological information sequence and the current time from the weather model based on similarity;

step S23, comparing the current reference air pressure in the barometer with the historical sea level air pressure value obtained in the step S22, if the comparison result is within the set error range, using the current reference air pressure value as the reference air pressure of the barometer, and if the comparison result exceeds the set error range, using the historical sea level air pressure value as the reference air pressure of the barometer;

in step S24, the barometer obtains the barometric pressure value of the current altitude and obtains the altitude (i.e., altitude h in embodiment 1) of the current coordinate point in combination with the reference barometric pressure.

By establishing a climate model, the current reference air pressure in the barometer can be compared with the sea level air pressure value at the historical moment with the same or similar meteorological conditions, an error range can be set, and if the comparison result is within the error range, the current reference air pressure is judged to be effective, so that the altitude of the current coordinate point is calculated; if the comparison result exceeds the error range, the current reference air pressure can be replaced by the historical sea level air pressure value, and the altitude of the current coordinate point is calculated; therefore, the measurement accuracy of the barometer can be improved better.

Because the big dipper orientation module can be out of order when getting into the door, so in step S22, can regard the time meteorological information sequence that the most recent acquisition as the time meteorological information sequence of current moment.

It is understood that the barometer is an existing device that obtains the height of the current measurement position based on the air pressure-height formula by comparing the measured air pressure value with the reference air pressure value when measuring the height. The most significant source of measurement error is the variation in the baseline barometric pressure value. The sea level atmospheric pressure value, which is the reference atmospheric pressure value, is influenced not only by the weather conditions at the present time but also by the time, i.e., the daily deterioration. By the method in the embodiment, the sea level air pressure value under the historical meteorological conditions of the same region can be preferably used as a reference to correct the reference air pressure of the barometer, so that the output accuracy of the barometer can be preferably improved.

In this embodiment, can acquire the meteorological information of current moment through big dipper orientation module to can construct the meteorological information sequence of current moment based on this. Then the weather information sequence at the moment can be input into the weather model, so that the weather information sequence at the moment at the historical moment which is most similar to the weather information sequence at the moment at the current moment is matched, and then the historical air pressure value at the corresponding historical moment can be output, so that the comparison between the historical sea level air pressure value and the current reference air pressure can be preferably realized.

In step S22 of the present embodiment, the current time weather information sequence is matched with the historical time weather information sequence, and after the most similar historical time weather information sequence is matched, the climate model can output the historical time and the historical sea level air pressure value corresponding to the historical time weather information sequence. Therefore, the rule for determining the error range in the present embodiment can be based on the following:

1. judging whether the time difference between the historical time and the current time reaches a set time threshold value, such as 30 min;

2. and judging whether the air pressure difference between the historical sea level air pressure value and the current reference air pressure reaches a set air pressure threshold value, such as 0.05 hPa.

If the rule 1 is not satisfied (that is, the difference value does not reach the set threshold), it indicates that the historical time to which the time weather information sequence of the historical time most similar to the current time weather information sequence matched in the historical data belongs is within the allowable error with the current time, that is, the matched time weather information sequence of the historical time is valid, and the historical sea level air pressure value corresponding to the time weather information sequence of the historical time can be used as a reference to be compared with the current reference air pressure.

If rule 1 is not satisfied, and if rule 2 is not satisfied (i.e., the difference value does not reach the set threshold), it indicates that the current reference air pressure is valid and can be used as the reference air pressure of the barometer.

If the rule 1 is not satisfied, if the rule 2 is satisfied (that is, the difference value reaches the set threshold), it indicates that the current reference barometric pressure is invalid, and the corresponding historical sea level barometric pressure value is used as the reference barometric pressure of the barometer.

If the rule 1 is satisfied (that is, the difference value reaches the set threshold), the historical time to which the weather information sequence of the matched historical time belongs and the current time exceed the allowable error range are described; i.e. not matching to a historical time similar to the meteorological conditions at the current time. At this time, the reference pressure P of the barometer is calculated and obtained according to the following formula_ref：

In the above formula, U represents the number of years included in the history data, L_τRepresenting historical sea level barometric pressure values at the same historical time as the current time,represents L_τWeight of (e ∈)_τTime weather information indicating the current timeThe Euclidean distance between the sequence and the time weather information sequence of the historical time at the same time.

Based on the above, it is preferable that the historical sea level barometric pressure values at all the historical times at the same time are weighted and calculated, and the result is used as the reference barometric pressure P of the barometer_ref。

Through the method, the influence of weather conditions and daily poor weather conditions on the reference air pressure can be fully considered, so that the reference air pressure of the barometer can be better calibrated, and the measurement accuracy can be better improved.

Step S21 of the present embodiment specifically includes the following steps,

step S211, collecting a meteorological information set W of the previous U years of the area where the construction site is located, wherein W is { W ═ W }_α|α＝1,2,3,…,U}，W_αIs the annual meteorological information sequence of the alpha year; w_α＝{G_αβ|α＝1,2,3,…,U；β＝1,2,3,…,365}，G_αβA solar weather information sequence of day beta of the alpha year; g_αβ＝{L_αβγ|α＝1,2,3,…,U；β＝1,2,3,…,365；γ＝1,2,3,…,q}，L_αβγIs a meteorological information sequence of the time of the alpha, beta, gamma, day of the alpha year, and q is the length of the time sequence;

step S212, cleaning the data in the meteorological information set W;

step S213, establishing a climate model Cl, wherein the climate model Cl is used for establishing a meteorological information set L at the beta-th day and the gamma-th moment of the alpha year_αβγSea level air pressure value AT corresponding to the time of day [ gamma ] of day [ alpha ] of year_αβγWherein Cl { (L)_αβγ，AT_αβγ)|α＝1,2,3,…,U；β＝1,2,3,…,365；γ＝1,2,3,…,q}。

The establishment of the climate model Cl can be preferably realized.

In this embodiment, the value of U can be 20 years.

Step S212 of this embodiment specifically includes the following steps,

step S212a, carrying out rough cleaning on the data in the meteorological information set W based on Fourier series fitting, and further carrying out rough cleaning on the dataEliminating annual meteorological information sequence W_αIn the sequence of weather information G judged as noise_αβ；

Step S212b, the data in the meteorological information set W is finely cleaned based on the confidence level, and then the daily weather information sequence G is eliminated_αβTime weather information sequence L of middle judgment as noise_αβγ。

Through the above, noise can be eliminated better, so that the measurement precision can be improved better.

Step S212a of the present embodiment specifically includes the following steps,

step S212a1, weather information sequence G_αβThe daily sequence of each meteorological index is subjected to Fourier series fitting, the fitting formula is as follows,

wherein Q is_αβ(beta) is a solar weather information sequence G_αβA fitting function of a specific index of (1); a. the_lAnd B_lFourier coefficients are obtained by fitting; l is expressed as Fourier order, and p is the value of the Fourier order; omega_lThe value is a multiple of 4 for a preset parameter;

step S212a2, for any specific meteorological index, fitting Q of function_αβA in (. beta.) A_lAnd B_lIf the sun weather information is within the set threshold value, the sun weather information sequence G of the corresponding day is determined_αβAnd judging as noise and eliminating.

Through the method, the day parameters which have little influence on the year parameters can be better eliminated, so that invalid data can be better eliminated, and the size of the data is reduced.

Wherein, the value of l can be 4 or 8.

Here, the threshold set in S212a2 can be set to a constant such as 0.05.

By the step S212a2, A can be eliminated_lAnd B_lSolar weather information sequence G approaching zero_αβThus can beDay parameters that do not have much impact on the year parameters are preferably rejected.

Step S212b of the present embodiment specifically includes the following steps,

step S212b1, based on the formulaFor each solar weather information sequence G_αβTime weather information sequence L_αβγCalculating the confidence level Ul of the specific meteorological index in (1);in the sequence of solar weather information G for corresponding specific weather indicators_αβThe mean value of delta is the weather information sequence G corresponding to the specific weather index_αβStandard deviation of (2).

Step S212b2, for any time meteorological information sequence L_αβγIf a specific meteorological index numerical value with the confidence level Ul lower than 0.95 exists, the corresponding time meteorological information sequence L is determined_αβγAnd judging as noise and eliminating.

By the above, the daily weather information sequence G can be preferably corrected_αβProcessing the data to eliminate invalid time meteorological information sequence L_αβγThus, data cleansing can be preferably achieved.

In this embodiment, the time weather information sequence is a numerical sequence of a plurality of weather indicators, the day weather information sequence is a sequence of time weather information sequences of all times of the day, and the year weather information sequence is a sequence of day weather information sequences of all days of the year. Therefore, a multi-index time meteorological information sequence can be constructed, and the data processing precision can be improved better.

In this embodiment, the plurality of meteorological parameters include one or more of temperature, humidity, wind direction, wind speed, and solar radiation. It is possible to preferably consider various factors that affect the air pressure.

In this embodiment, in step S22, the similarity determination is performed on the time weather information sequence based on the euclidean distance. The similarity determination can be preferably realized.

To further illustrate the method in this example, a specific example is described below.

In this particular embodiment, the temperature (Pm) is selected¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) And constructing a time meteorological information sequence as a meteorological index.

Time weather information sequence L for one historical time_αβγIt is then:

wherein the content of the first and second substances,andrespectively indicate the temperature (Pm) at the time of day [ gamma ] on day [ beta ] of the year [ alpha ]¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) The numerical value of (c).

The time weather information sequence of the current time t can be expressed as:

wherein the content of the first and second substances,andrespectively representing the temperature (Pm) at the current time t¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) The numerical value of (c).

Therefore, when performing similarity matching, the calculation formula of the similarity (euclidean distance) is:

the similarity between the current time weather information sequence and the historical time weather information sequence is calculated one by one, and the time weather information sequence with the minimum similarity is the matched historical time weather information sequence.

Wherein, for a weather information sequence G_αβIt is then:

therefore, in step S212a1, the daily sequence of each weather indicator is the temperature (Pm)¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) The number of the current day value of (1) is the number sequence of the time of day. Namely:

temperature (Pm)¹) The daily sequence of the meteorological indexes is as follows:

humidity (Pm)²) The daily sequence of the meteorological indexes is as follows:

wind direction (Pm)³) The daily sequence of the meteorological indexes is as follows:

wind speed (Pm)⁴) The daily sequence of the meteorological indexes is as follows:

solar radiation (Pm)⁵) The daily sequence of the meteorological indexes is as follows:

the step S212a1 preferably realizes the fitting of the day sequence of each weather indicator, and the Fourier coefficient A of the day sequence of any weather indicator_lAnd B_lWhen the solar weather information is within the set threshold value, the solar weather information sequence G of the day is determined_αβAnd (5) removing.

In step S212b, the confidence level is calculated for each weather indicator day series value, and if the confidence level of any weather indicator is less than 0.95, the weather information series L is determined for the time of the whole historical time of the weather indicator_αβγAnd then the samples are removed.

By the method in the embodiment, historical meteorological data can be preferably processed, a climate model is established, and the reference barometric pressure of the barometer is corrected by considering the difference between the time value of the current time and the meteorological condition and the time value of the historical time and the meteorological condition, so that the influence of the meteorological condition and the daily difference on the reference barometric pressure can be preferably and fully considered, and the positioning accuracy of the barometer can be preferably improved.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.