阅读说明：本技术 基于北斗定位的现场带电体安全距离区域划分系统及方法 (Beidou positioning-based on-site electrified body safe distance area division system and method ) 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近电防护技术领域,具体地说,涉及一种基于北斗定位的现场带电体安全距离区域划分系统及方法。该系统包括：近电报警模块,其设于现场人员处并用于在现场人员与带电体的距离达到d时产生近电信号；本地处理模块,其设于现场人员处并用于在接收到近电信号时产生报警信号和坐标记录信号；报警模块,其用于接收本地处理模块处的报警信号并在接收到报警信号进行报警动作；以及北斗定位模块,其用于对现场人员的坐标进行实时采集并用于在接收到坐标记录信号时将当前坐标作为近电坐标(x,y,z)发送给本地处理模块。该方法基于上述系统实现。本发明能够较佳地实现对带电体位置的预判、共享及预警。(The invention relates to the technical field of near-electric protection of construction sites, in particular to a Beidou positioning-based system and a Beidou positioning-based method for dividing safe distance areas of live bodies on sites. The system comprises: the near-electricity alarm module is arranged at a site personnel and used for generating a near-electricity signal when the distance between the site personnel and the charged body reaches d; the local processing module is arranged at a site personnel and used for generating an alarm signal and a coordinate recording signal when receiving the near-electricity signal; the alarm module is used for receiving the alarm signal at the local processing module and carrying out alarm action after receiving the alarm signal; and the Beidou positioning module is used for acquiring the coordinates of field personnel in real time and sending the current coordinates as near-electric coordinates (x, y, z) to the local processing module when receiving the coordinate recording signals. The method is realized based on the system. The invention can better realize the prejudgment, sharing and early warning of the position of the charged body.)

1. Electrified body safe distance regional division system in scene based on big dipper location, it includes:

the near-electricity alarm module is arranged at a site personnel and used for generating a near-electricity signal when the distance between the site personnel and the charged body reaches d;

the local processing module is arranged at a site personnel and used for generating an alarm signal and a coordinate recording signal when receiving the near-electricity signal;

the alarm module is used for receiving the alarm signal at the local processing module and carrying out alarm action after receiving the alarm signal; and

the Beidou positioning module is used for acquiring the coordinates of field personnel in real time and sending the current coordinates as near-electric coordinates (x, y, z) to the local processing module when receiving the coordinate recording signals;

the local processing module can be used for generating 6 coordinate points to be added into a local near-electric coordinate set when receiving the near-electric coordinates (x, y, z), namely (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d); the local processing module can be used for generating an alarm signal which is used for sending the alarm signal to the alarm module when the Euclidean distance between the real-time coordinate acquired by the Beidou positioning module and any point in the local near electric coordinate set reaches D.

2. The Beidou positioning-based on-site electrified body safe distance area division system according to claim 2, is characterized in that: the system comprises a processing platform module and a wireless communication module arranged at a site personnel, wherein a remote near-electricity coordinate set is arranged at the processing platform module, the local processing module can be used for sending near-electricity coordinates (x, y, z) to the processing platform module through the wireless communication module, and the processing platform module is used for generating the 6 coordinate points and adding the 6 coordinate points to the remote near-electricity coordinate set when receiving the near-electricity coordinates (x, y, z); the processing platform module can also be used to update the remote near-electric coordinate set into the near-electric coordinate sets at all field personnel as the data of the remote near-electric coordinate set is updated.

3. The Beidou positioning-based on-site electrified body safe distance area division system according to claim 2, is characterized in that: and the processing platform module is also provided with an electronic map module which is used for marking all near-electricity coordinates and forming a near-electricity area.

4. A Beidou positioning-based on-site electrified body safe distance area division method comprises the following steps:

step S1, establishing a local near-electricity coordinate set;

s2, collecting coordinates of field personnel approaching to a charged body as near electric coordinates (x, y, z), generating points (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d) and updating the points to a local near electric coordinate set;

and step S3, calculating the Euclidean distances between the real-time coordinates of the field personnel and all points in the local near-electricity coordinate set, and alarming when the Euclidean distances between the real-time coordinates of the field personnel and any point in the local near-electricity coordinate set reach D.

5. The Beidou positioning-based on-site electrified body safe distance area division method according to claim 4, is characterized in that:

in the step S2, a near-electricity alarm module, an alarm module, a Beidou positioning module and a local processing module are arranged at a site personnel, the near-electricity alarm module generates a near-electricity signal when the distance between the site personnel and a charged body reaches d, the local processing module generates an alarm signal and a coordinate recording signal when receiving the near-electricity signal, the alarm module performs an alarm action after receiving the alarm signal, and the Beidou positioning module sends the current coordinate as a near-electricity coordinate (x, y, z) to the local processing module when receiving the coordinate recording signal.

6. The Beidou positioning-based on-site electrified body safe distance area division method according to claim 5, is characterized in that: the set of near-electric coordinates is provided at the local processing module.

7. The Beidou positioning-based on-site electrified body safe distance area division method according to claim 6, is characterized in that: in step S2, the near electric coordinates (x, y, z) are sent to the processing platform module through the wireless communication module provided at the site personnel, the processing platform module is provided with a remote near electric coordinate set, the points (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d), and (x, y, z-d) are generated by the processing platform module and updated into the remote near electric coordinate set, and the remote near electric coordinate set is updated into the near electric coordinate sets of all the site personnel when the data of the remote near electric coordinate set is updated.

Technical Field

The invention relates to the technical field of near-electric protection of construction sites, in particular to a Beidou positioning-based system and a Beidou positioning-based method for dividing safe distance areas of live bodies on sites.

Background

In a construction site, wiring is often complicated, so that near-electric protection of the cable is often difficult and hidden. At present, although mature near-electricity alarm module products exist, the near-electricity alarm mode is a passive alarm; that is, when a field person wearing a near-electricity alarm module product approaches a near-electricity body, the near-electricity alarm module can detect the near-electricity body based on the electromagnetic induction principle and give an alarm when the near-electricity body is detected. This kind of passive form alarm mode, the drawback that exists mainly lies in: the detection range of the existing near-electricity alarm module products is usually only 0.8-5m, and field personnel are usually in a motion state, so that the detection is difficult to respond in time when the electric alarm module gives an alarm.

Disclosure of Invention

The invention provides a Beidou positioning-based on-site electrified body safe distance area division system which can overcome certain defects in the prior art.

According to the invention, the Beidou positioning-based on-site electrified body safe distance area division system comprises:

the near-electricity alarm module is arranged at a site personnel and used for generating a near-electricity signal when the distance between the site personnel and the charged body reaches d;

the local processing module is arranged at a site personnel and used for generating an alarm signal and a coordinate recording signal when receiving the near-electricity signal;

the alarm module is used for receiving the alarm signal at the local processing module and carrying out alarm action after receiving the alarm signal; and

the Beidou positioning module is used for acquiring the coordinates of field personnel in real time and sending the current coordinates as near-electric coordinates (x, y, z) to the local processing module when receiving the coordinate recording signals;

the local processing module can be used for generating 6 coordinate points to be added into a local near-electric coordinate set when receiving the near-electric coordinates (x, y, z), namely (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d); the local processing module can be used for generating an alarm signal which is used for sending the alarm signal to the alarm module when the Euclidean distance between the real-time coordinate acquired by the Beidou positioning module and any point in the local near electric coordinate set reaches D.

Through the system, after the near-electricity alarm module acts, the coordinate point of the current alarm position can be preferably recorded, 6 points in an orthogonal space with the distance D from the coordinate point can be derived based on the coordinate point of the current position, the 6 points are actually the pre-judged charged body position, and the local processing module can be used for preferably and actively alarming when the distance between the current position and the pre-judged charged body position reaches D, so that the near-electricity early warning of field personnel can be preferably realized.

Preferably, the system further comprises a processing platform module and a wireless communication module arranged at a site personnel, a remote near-electricity coordinate set is arranged at the processing platform module, the local processing module can be used for sending the near-electricity coordinates (x, y, z) to the processing platform module through the wireless communication module, and the processing platform module is used for generating the 6 coordinate points and adding the coordinate points to the remote near-electricity coordinate set when receiving the near-electricity coordinates (x, y, z); the processing platform module can also be used to update the remote near-electric coordinate set into the near-electric coordinate sets at all field personnel as the data of the remote near-electric coordinate set is updated.

By the method, the near-electricity coordinates (x, y, z) collected by the Beidou positioning module at each site personnel can be collected, a total remote near-electricity coordinate set suitable for the whole construction site can be generated, and the remote near-electricity coordinate set is adopted to update all local near-electricity coordinate sets, so that the sharing of the whole pre-judged electrified body position can be better realized, and the near-electricity early warning can be better realized.

Preferably, the processing platform module is further provided with an electronic map module, and the electronic map module is used for marking all near-electricity coordinates and forming a near-electricity area. Therefore, the inspection of managers can be better facilitated.

In addition, based on any one of the Beidou positioning-based on-site electrified body safe distance area division systems, the invention also provides a Beidou positioning-based on-site electrified body safe distance area division method, which comprises the following steps:

step S1, establishing a local near-electricity coordinate set;

s2, collecting coordinates of field personnel approaching to a charged body as near electric coordinates (x, y, z), generating points (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d) and updating the points to a local near electric coordinate set;

and step S3, calculating the Euclidean distances between the real-time coordinates of the field personnel and all points in the local near-electricity coordinate set, and alarming when the Euclidean distances between the real-time coordinates of the field personnel and any point in the local near-electricity coordinate set reach D.

Through the above, the near-electricity alarm and the near-electricity early warning to field personnel can be better realized.

As a preference, the first and second liquid crystal compositions are,

in the step S2, a near-electricity alarm module, an alarm module, a Beidou positioning module and a local processing module are arranged at a site personnel, the near-electricity alarm module generates a near-electricity signal when the distance between the site personnel and a charged body reaches d, the local processing module generates an alarm signal and a coordinate recording signal when receiving the near-electricity signal, the alarm module performs an alarm action after receiving the alarm signal, and the Beidou positioning module sends the current coordinate as a near-electricity coordinate (x, y, z) to the local processing module when receiving the coordinate recording signal. Therefore, the method is convenient to realize.

Preferably, the set of near-electric coordinates is provided at the local processing module. Therefore, the method is convenient to realize.

Preferably, in step S2, the near electric coordinates (x, y, z) are sent to the processing platform module through the wireless communication module provided at the site personnel, the processing platform module is provided with a remote near electric coordinate set, the processing platform module generates and updates the points (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d) into the remote near electric coordinate set, and when the data of the remote near electric coordinate set is updated, the remote near electric coordinate set is updated into the near electric coordinate sets at all the site personnel.

Therefore, the sharing of the pre-determined charged body position can be preferably realized.

Drawings

Fig. 1 is a schematic block diagram of a safe distance area division system for a live charged body based on Beidou positioning in embodiment 1;

FIG. 2 is a diagram illustrating a method and system according to 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

This embodiment provides a regional system of dividing of electrified body safe distance in scene based on big dipper location, it includes:

the near-electricity alarm module is arranged at a site personnel and used for generating a near-electricity signal when the distance between the site personnel and the charged body reaches d;

the local processing module is arranged at a site personnel and used for generating an alarm signal and a coordinate recording signal when receiving the near-electricity signal;

the alarm module is used for receiving the alarm signal at the local processing module and carrying out alarm action after receiving the alarm signal; and

the Beidou positioning module is used for acquiring the coordinates of field personnel in real time and sending the current coordinates as near-electric coordinates (x, y, z) to the local processing module when receiving the coordinate recording signals;

the local processing module can be used for generating 6 coordinate points to be added into a local near-electric coordinate set when receiving the near-electric coordinates (x, y, z), namely (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d); the local processing module can be used for generating an alarm signal which is used for sending the alarm signal to the alarm module when the Euclidean distance between the real-time coordinate acquired by the Beidou positioning module and any point in the local near electric coordinate set reaches D.

Through the system in the embodiment, after the near-electricity alarm module acts, the coordinate point of the current alarm position can be preferably recorded, 6 points in the orthogonal space with the distance D from the coordinate point can be derived based on the coordinate point of the current position, the 6 points are actually the pre-judged charged body positions, the local processing module can be used for preferably and actively alarming when the distance between the current position and the pre-judged charged body positions reaches D, and therefore near-electricity early warning of field personnel can be preferably realized.

In this embodiment, the storage of all the pre-determined positions of the charged body can be preferably realized by constructing a local near-electricity coordinate set, and since the coordinate points are stored locally, the data can be preferably processed quickly, so that the near-electricity early warning can be realized quickly and timely.

In this embodiment, the near-electricity alarm module can adopt an existing near-electricity alarm module device, which can detect a charged object based on an electric field induction principle, and d can be set to be the maximum detection range of the near-electricity alarm module.

In this embodiment, D is a preset value, and can be set to 2-10m, for example.

In addition, the system of this embodiment further includes a processing platform module and a wireless communication module disposed at the site personnel, a remote near electrical coordinate set is disposed at the processing platform module, the local processing module can be used for sending the near electrical coordinates (x, y, z) to the processing platform module through the wireless communication module, and the processing platform module is used for generating the 6 coordinate points and adding the 6 coordinate points to the remote near electrical coordinate set when receiving the near electrical coordinates (x, y, z); the processing platform module can also be used to update the remote near-electric coordinate set into a local near-electric coordinate set at all field personnel as data of the remote near-electric coordinate set is updated.

By the method, the near-electricity coordinates (x, y, z) collected by the Beidou positioning module at each site personnel can be collected, a total remote near-electricity coordinate set suitable for the whole construction site can be generated, and the remote near-electricity coordinate set is adopted to update all local near-electricity coordinate sets, so that the sharing of the whole pre-judged electrified body position can be better realized, and the near-electricity early warning can be better realized.

In addition, the processing platform module is also provided with an electronic map module, and the electronic map module is used for marking all near-electricity coordinates and forming a near-electricity area. Therefore, the inspection of managers can be better facilitated.

Based on the system in this embodiment, this embodiment also provides a live body safe distance regional division method based on big dipper location, and it includes following step:

step S1, establishing a local near-electricity coordinate set;

s2, collecting coordinates of field personnel approaching to a charged body as near electric coordinates (x, y, z), generating points (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d) and (x, y, z-d) and updating the points to a local near electric coordinate set;

and step S3, calculating the Euclidean distances between the real-time coordinates of the field personnel and all points in the local near-electricity coordinate set, and alarming when the Euclidean distances between the real-time coordinates of the field personnel and any point in the local near-electricity coordinate set reach D.

Through the above, the near-electricity alarm and the near-electricity early warning to field personnel can be better realized.

In addition, in step S2, a near-electricity alarm module, an alarm module, a big dipper positioning module, and a local processing module are disposed at the site of the field personnel, the near-electricity alarm module generates a near-electricity signal when the distance between the field personnel and the charged body reaches d, the local processing module generates an alarm signal and a coordinate recording signal when receiving the near-electricity signal, the alarm module performs an alarm action after receiving the alarm signal, and the big dipper positioning module sends the current coordinate as a near-electricity coordinate (x, y, z) to the local processing module when receiving the coordinate recording signal. Therefore, the method is convenient to realize.

Further, a set of near-electric coordinates is provided at the local processing module. Therefore, the method is convenient to realize.

In addition, in step S2, the near electric coordinates (x, y, z) are sent to the processing platform module through the wireless communication module provided at the site personnel, the processing platform module is provided with a remote near electric coordinate set, the points (x + d, y, z), (x-d, y, z), (x, y + d, z), (x, y-d, z), (x, y, z + d), and (x, y, z-d) are generated and updated into the remote near electric coordinate set through the processing platform module, and the remote near electric coordinate set is updated into the near electric coordinate sets at all the site personnel when the data of the remote near electric coordinate set is updated. Therefore, the sharing of the pre-determined charged body position can be preferably realized.

In this embodiment, the big dipper orientation module, nearly electric alarm module, local processing module, alarm module and wireless communication module can all locate a terminal equipment department, so can wear in on-the-spot personnel department better. The local near-electric coordinate set can be stored in a memory of the local processing module and the remote near-electric coordinate set can be stored in a storage server of the processing platform module.

By the method and the system, the position of the pre-judged charged body can be updated and shared in real time, so that the near-electricity protection of field personnel can be realized better.

Example 2

In view of the fact that the Beidou positioning and positioning system is higher in positioning accuracy of a plane coordinate and poorer in positioning of a height coordinate, the embodiment provides a high-accuracy positioning method based on Beidou positioning and barometer, and the plane coordinate acquired by the Beidou positioning module and the altitude acquired by the barometer can be used as measurement coordinates of a coordinate point. Of course, it can be understood that the electronic map at the electronic map module is constructed such that the height coordinate of any point is expressed in altitude.

As shown in fig. 2, the present embodiment provides a high-precision positioning method based on Beidou positioning and a barometer, which includes the following steps:

s1, acquiring plane coordinates (x, y) of the current coordinate point based on the Beidou positioning module;

step S2, acquiring the height coordinate z of the current coordinate point based on the barometer;

in step S3, (x, y, z) is output as the coordinates of the current coordinate point.

Through the method in the embodiment, the plane coordinate provided by the Beidou positioning module and the height coordinate acquired by the barometer can be preferably used as the current coordinate point and output, so that better measurement accuracy can be achieved.

Step S2 of this embodiment specifically 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 of the current coordinate point in combination with the reference barometric pressure as the altitude coordinate z.

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.

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 ∈)_τAnd the Euclidean distance between the time meteorological information sequence at the current time and the time meteorological information sequence at the historical time at the same time.

Based on the above, the method can be better applied toWeighting and calculating historical sea level air pressure values at all historical moments at the same moment, and taking the result as the reference air 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 removing annual meteorological information sequence W_αIn the sequence of weather information G judged as noise_αβ；

Step S212b, finely cleaning the data in the meteorological information set W based on the confidence level, and further removing daily meteorological information sequence G_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_αβTherefore, the day parameters which have little influence on the year parameters can be better 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.

Based on the method in the embodiment, the embodiment also provides a high-precision positioning system based on Beidou positioning and barometer, which comprises a Beidou positioning module, a local processing module and a barometer, wherein the climate model is arranged at the local processing module, and the local processing module and the barometer are both arranged at the terminal equipment.

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.