KR101431132B1 - Absolute altitude calculation system and absolute altitude calculation method for worker in constructino filed - Google Patents

Abstract

The present invention can obtain an absolute altitude value by obtaining a reference altitude value indicated by a current atmospheric pressure value in consideration of a difference between a certain altitude value of the reference station and the atmospheric pressure, The object of the present invention is to provide a construction site operator's absolute altitude detection system capable of more accurately performing altitude and position detection. According to an aspect of the present invention, there is provided an information processing system including a weather database unit for collecting and storing weather data of a reference station as a construction site survey point, a reference station 3D reference coordinate database unit for storing 3D reference coordinate data of a reference station, A reference station database server module including a reference altitude data calculator for calculating reference altitude data at a current air pressure based on current air pressure data from a database unit and altitude data from a 3D reference coordinate database unit; A mobile station air pressure detector for detecting an air pressure at a position where an operator who is a mobile station is located; and a controller for setting the absolute altitude data of the mobile station based on the reference altitude data and the air pressure data detected by the mobile station air pressure detector, A mobile station processing module including an absolute altitude data calculating section for calculating an absolute altitude data calculating section; And a wireless communication module for wirelessly communicating between the reference station database server module and the mobile station processing module.

Description

[0001] ABSOLUTE ALTITUDE CALCULATION SYSTEM AND ABSOLUTE ALTITUDE CALCULATION METHOD FOR WORKER IN CONSTRUCTINO FILED [0002]

The present invention relates to an absolute altitude detection system and a detection method for a construction site operator, and more particularly, to a system and method for detecting absolute altitude values of a construction site operator by calculating a reference altitude value indicated by a current atmospheric pressure value, And it can be used to locate the altitude and position of the worker in the construction site by utilizing it in the worker location system. Therefore, it is possible to quickly construct the structure in case of a dangerous situation such as underground structures or high-rise buildings, The present invention relates to an absolute altitude detection system and an absolute altitude detection method for a construction site operator capable of performing work instructions and communication for a construction site operator.

Recently, the demands and efforts for securing location information of workers are increasing in construction sites such as underground structures and high-rise buildings. This is because the location provided by the GPS (Global Positioning System) is composed of complicated structures and underground spaces that are difficult to secure in most construction sites.

In other words, it is important to understand the position and status of the worker and to understand the progress of the work due to the structural characteristics of the underground structure and the high-rise building in the construction sites of the underground structures such as tunnels and joints and the complex and large- Specifically, it is necessary to quickly identify the location of the worker in order to promptly structure the worker in the event of a hazard such as a safety accident, fire, explosion, earthquake or collapse, It is even more important to grasp the status and to grasp the progress of the work.

However, due to the complicated structure of the work site, noise, vibration, dust, and radio interference, there is a limit to the operator's three-dimensional position tracking / management and realization of wired and wireless communication environment.

Therefore, in order to compensate the limitation of the position provided by the GPS, a combination of many inertial sensors and a wireless solution have been introduced, and as a part of this, it is possible to consider applying the technique of detecting the altitude using the air pressure sensor. In the case of air pressure sensors, unlike other inertial sensors, it is not a system that provides the amount of change but a technique for measuring the absolute air pressure and converting it to a high degree.

However, in the case of an air pressure sensor, it is difficult to measure the absolute altitude at every moment because the atmospheric pressure changes according to the time and place of measurement and the reference pressure of the sea level changes. Therefore, it is applied to detect the position of a worker in a building site There is a problem that the position of the worker can not be accurately detected.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for estimating a current air pressure value by taking into consideration a deviation between a certain altitude value (altitude data) The absolute altitude detection system of the construction site operator and the absolute altitude detection method which can obtain the absolute altitude value by obtaining the reference altitude value indicated by the reference altitude value are provided.

In addition, the present invention applies the absolute altitude value to the elevation and position of the worker at the construction site, thereby enabling the operator to perform the position more accurately and reliably, and thereby, when a dangerous situation occurs in an underground structure or a high- And an object of the present invention is to provide an absolute altitude detection system and an absolute altitude detection method of a construction site operator capable of performing work instructions and communication for safe and smooth work progress in a worksite.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to a first aspect of the present invention for achieving the above objects and other features, there is provided an information processing system including a weather database unit for collecting and storing weather data of a reference station, which is a construction site surveying point, And a reference altitude data calculation unit for calculating reference altitude data at a current air pressure based on the current air pressure data from the weather database unit and the altitude data from the 3D reference coordinate database unit, Server module; A mobile station air pressure detector for detecting an air pressure at a position where an operator who is a mobile station is located; and a controller for setting the absolute altitude data of the mobile station based on the reference altitude data and the air pressure data detected by the mobile station air pressure detector, A mobile station processing module including an absolute altitude data calculating section for calculating an absolute altitude data calculating section; And a wireless communication module for wirelessly communicating between the reference station database server module and the mobile station processing module.

In the first aspect of the present invention, the reference station database server module may receive the atmospheric pressure and 3D coordinate data of the reference station in real time or periodically, and collect the atmospheric pressure data in the reference station weather database unit.

In the first aspect of the present invention, the reference station database server module may be configured such that the correction signal transmitted by the DGPS (Differential GPS) reference station includes weather information of weather data including atmospheric pressure data, As shown in FIG.

In the first aspect of the present invention, the reference station database server module includes altitude data of a reference survey point at each construction site and atmospheric pressure data collected from meteorological equipment installed at the reference survey point in the DGPS correction information And may be configured to receive the atmospheric pressure data and the 3D coordinate data.

In the first aspect of the present invention, the reference altitude data calculator calculates reference altitude data (H ^RS ) using the following equations (1) and (2).

(1)

(One)

(2)

(2)

From here,

Pn: data permutation nth atmospheric pressure data (millibar)

CP: Current Pressure (millibar)

MSLP: Mean-sea-level pressure

In the first aspect of the present invention, the absolute altitude data calculator calculates the absolute altitude data using the following formula (3) based on the current reference standard air pressure data (RSP) and the reference altitude data ( ^HRS ) (H ^a ).

(3)

(3)

From here,

RSP: Reference Station Pressure (Reference Station Pressure)

CP: Current Pressure

H ^RS : Reference altitude data

In a first aspect of the present invention, the present invention may further comprise a backup unit for backing up all the data of the mobile station processing module.

In a first aspect of the present invention, one or more components included in the mobile station processing module may be configured to be implemented as a MEMS (Micro Electro Mechanical System).

According to a second aspect of the present invention, there is provided a method for detecting an absolute altitude of a construction site operator, comprising the steps of: collecting and storing weather data including atmospheric pressure data of a reference station, Storing coordinate data; Calculating reference altitude data at a current air pressure based on the current air pressure data from the reference station pressure data and the altitude data from the 3D reference coordinate data; Detecting atmospheric pressure data at a position where the worker who is a mobile station is presently located; And calculating the absolute altitude data of the operator based on the reference altitude data and the atmospheric pressure data of the current reference station transmitted from the reference station.

In the second aspect of the present invention, the altitude data and the atmospheric pressure data of the reference station are provided from the weather data including the atmospheric pressure data in the correction signal transmitted by the DGPS (Differential GPS) reference station, Altitude data and meteorological data of the meteorological equipment of the reference measurement point.

In the second aspect of the present invention, the reference altitude data calculation uses the following equations (1) and (2) to calculate the reference altitude data (H ^RS ).

(1)

(One)

(2)

(2)

From here,

Pn: data permutation nth atmospheric pressure data (millibar)

CP: Current Pressure (millibar)

MSLP: Mean-sea-level pressure

In a second aspect of the invention, the absolute height data calculated is absolute altitude data on the basis of the current reference station air pressure data (RSP) and the reference height data (H ^RS) that is calculated using Equation (3) below, (H ^a ).

(3)

(3)

From here,

RSP: Reference Station Pressure (Reference Station Pressure)

CP: Current Pressure

H ^RS : Reference altitude data

In a second aspect of the present invention, it is preferable that the present invention backs up the data collected and detected in each step.

According to the absolute altitude detection system and the absolute altitude detection method of the construction site operator of the present invention, the reference altitude value indicated by the current atmospheric pressure value is determined in consideration of the deviation between the constant altitude value (altitude data) And thus it is possible to more accurately and reliably perform the elevation and position determination of the worker at the construction site.

In addition, the present invention has an effect of enabling rapid construction of an operator in the event of a dangerous situation in an underground structure or a high-rise building, and performing work instruction and communication for safe and smooth work progress at the worksite.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a configuration diagram showing a configuration of an absolute altitude detection system of a construction site operator according to the present invention.
2 is a flowchart for explaining an absolute altitude detection method of a construction site operator according to the present invention.
3 is a photograph of a position and an air pressure detecting device (GDM) used in the test of the present invention.
4 is a graph showing the altitude at which the LPF is applied.
FIG. 5 is a photograph of an authorized reference station.
Fig. 6 is a photograph of the construction site origin point. Fig.
7 is a graph showing a change amount of the altitude between the measurement reference point and the vehicle movement.
FIG. 8 is a graph showing a 3D trajectory using absolute altitude data information in this test.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation, Software. ≪ / RTI >

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, an absolute altitude detection system and absolute altitude detection method for a construction site operator according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the reference station refers to a certain measurement point of a construction site, and the mobile station refers to a moving object or a location moving from a construction site such as an operator.

First, an absolute altitude detection system for a construction site operator according to the present invention will be described with reference to FIG. 1 is a configuration diagram showing a configuration of an absolute altitude detection system of a construction site operator according to the present invention.

1, the absolute altitude detection system of a construction site operator according to the present invention includes a reference station weather database unit (hereinafter referred to as " reference station information database ") for collecting and storing weather data of a construction site survey point (Hereinafter also referred to as a 'reference station 3D reference coordinate unit') of a reference station that stores 3D reference coordinate data of a construction site survey point, And a reference altitude data calculation unit (130) for calculating reference altitude data at a current air pressure based on the current atmospheric pressure data from the vapor phase database unit and the altitude data from the 3D reference coordinate database unit Station database server module 100; A mobile station air pressure detection unit (220) for detecting an air pressure at a position where an operator who is a mobile station is located; and a control unit for controlling the operation of the mobile station based on the reference altitude data and the air pressure data detected by the mobile station air pressure detection unit A mobile station processing module (200) including an absolute altitude data calculation unit (230) for calculating absolute altitude data of a mobile station; And a wireless communication module 300 for wirelessly communicating between the reference station database server module 100 and the mobile station processing module 200.

The reference station database server module 100 includes atmospheric pressure data and a 3D reference coordinate receiver. The atmospheric pressure data and the 3D reference coordinate receiver may be configured to receive atmospheric pressure and / or 3D coordinates of a construction site survey point (reference station) And collects and stores the atmospheric pressure data (atmospheric pressure value) in the reference station weather database unit 110.

For example, the atmospheric pressure data and the 3D coordinate data in the reference station database server module 100 are transmitted to a correction signal transmitted by a DGPS (Differential GPS) reference station having precise coordinates, As shown in FIG.

On the other hand, the barometric pressure data and the 3D coordinate data in the reference station database server module 100 can utilize a reference survey point (survey origin point) for each construction site. When the reference survey point is utilized, Value (altitude data) and atmospheric pressure data collected from meteorological equipment installed at the location of this reference point can be included in the DGPS correction information.

The reference altitude data calculation unit 130 calculates the reference altitude data H ^RS using the following equations (1) and (2).

(1)

(One)

(2)

(2)

From here,

Pn: data permutation nth atmospheric pressure data (millibar)

CP: Current Pressure (millibar)

MSLP: Mean-sea-level pressure

Next, the mobile station pressure detection unit 210 of the mobile station processing module 200 is an air pressure sensor provided or installed in a construction site worker (i.e., mobile station). Here, the fact that the air pressure sensor is provided or installed in the mobile station (i.e., the worker) means that the air pressure sensor is moved together with the worker, for example, the worker's body, the safety helmet worn by the worker, .

The absolute altitude data calculation unit 230 for calculating the absolute altitude data of the mobile station on the basis of the reference altitude data and the atmospheric pressure data detected by the mobile station air pressure detection unit calculates the absolute altitude data based on the current reference transmitted from the reference station DB server module 100 based on the air pressure data station (RSP) the reference height data (H ^RS) calculating the calculated and calculates the absolute height data (H ^a) using equation (3) below.

(3)

(3)

From here,

RSP: Reference Station Pressure (Reference Station Pressure)

CP: Current Pressure

H ^RS : Reference altitude data

Next, the wireless communication module 300 may use Wi-Fi, code division multiple access (CDMA), or other network communication.

In addition, the present invention may further include a backup unit 240 capable of backing up data from each of the components.

In the above description, one or more components included in the mobile station processing module 200 may preferably be implemented as microelectronic MEMS (MicroElectroMechanical System, e.g., 10 cm * 10 cm * 5 cm, 5 cm * 5 cm * 2 cm, etc.) have. In other words, it is possible to implement all of the components of the mobile station processing module 200 or each of a part of the components by a miniaturization module (for example, a miniaturization chip) and then integrate them into one substrate (for example, a silicon substrate) . In a variant, the miniaturization modules can be connected by a flexible cable.

Next, a method for detecting an absolute altitude of a construction site operator of the present invention will be described with reference to FIG. 2 is a flowchart for explaining an absolute altitude detection method of a construction site operator according to the present invention.

As shown in FIG. 2, the absolute height detection method of a construction site operator according to the present invention collects and stores weather data including atmospheric pressure data of a reference station, which is a construction site surveying origin, The reference coordinate data is stored (S100); Calculates reference altitude data at a current air pressure based on the current air pressure data from the reference air pressure data and the altitude data from the 3D reference coordinate data (S200); The operator, who is a mobile station, detects the atmospheric pressure data at the current position (S300); And calculating the absolute altitude data of the operator on the basis of the current reference standard air pressure data RSP transmitted from the reference station and the reference altitude data calculated in operation S400.

The altitude data and the atmospheric pressure data of the reference station are supplied from the weather data including the atmospheric pressure data to the correction signal transmitted by the DGPS (Differential GPS) reference station, or the altitude data of the reference survey point for each construction site, To be included in the DGPS correction information.

In the step of calculating the reference altitude data, the reference altitude data (H ^RS ) is calculated using the following equations (1) and (2).

(1)

(One)

(2)

(2)

From here,

Pn: data permutation nth atmospheric pressure data (millibar)

CP: Current Pressure (millibar)

MSLP: Mean-sea-level pressure

The detection of the atmospheric pressure data of the mobile station can be detected through the atmospheric pressure sensor provided or installed in the mobile station. The fact that the air pressure sensor is provided or installed in the mobile station (i.e., the worker) means that the air pressure sensor is moved together with the worker, for example, the worker's body, the safety helmet worn by the worker or work clothes.

Calculating the absolute height data is calculated the absolute height data (H ^a) using Equation (3) below based on the reference height data (H ^RS) calculated with the current reference station air pressure data (RSP) do.

(3)

(3)

From here,

RSP: Reference Station Pressure (Reference Station Pressure)

CP: Current Pressure

H ^RS : Reference altitude data

In addition, the absolute altitude detection method of the present invention may further include backing up data or information collected and detected at each step (S500).

The inventor of the present invention conducted a test at a specific place in order to verify and analyze the absolute altitude detection system and the absolute altitude detection method of the construction site operator described above. The contents of the test will be described below.

In this test, it is difficult to judge the position of the operator in the underground. Therefore, the underground of the construction site was selected as the test site in this test, and the inertial sensor, the pressure sensor, and the GPS receiver (see FIG. 3) And information about position and altitude was collected and observed. 3 is a photograph of a position and an air pressure detecting device (GDM) used in the test of the present invention.

Generally, the altitude value (altitude data) of the air pressure sensor is not as reliable as the GPS altitude because the air pressure changes every day and every hour. This occurs because the altitude is calculated using the current barometric pressure and the fixed sea level pressure. However, by obtaining the reference altitude value (reference altitude data) indicated by the current atmospheric pressure value, the above problem disappears and the absolute altitude value (the altitude altitude data) can be obtained as described above.

The following equations can be derived when the measurement reference point altitude is RH and the moving body altitude is MH (n).

CP _(n)  = (P _(n-4) + P _(n-3) + P _(n-2) + P _(n-1) + P _(n) ) / 5 - P _(n)

_{△ H (n) = RH -} MH (n), △ CH (n) = RH + △ H (n)

Based on the above equation, the 2D position and the atmospheric pressure data are collected first and then the LPF is applied to remove the high noise component. 4 is a graph showing the altitude at which the LPF is applied.

In this test, to calculate the reference altitude value (reference altitude data), we used the information method of the certified reference station, the method of using the site survey point, and the altitude measurement method. The authorized base station is to utilize it because it knows the accurate altitude value (altitude data) in several millimeters, and the applicability to the surveying origin of the construction site was examined, and the arbitrary pressure was measured using these two sites The absolute altitude was calculated as described above. FIG. 5 is a photograph of an authorized base station, FIG. 6 is a photograph of a construction site surveying origin, and FIG. 7 is a graph showing a variation of a measurement reference point and an altitude between vehicles.

The altitude data of the measurement reference point was 4.5M ~ 4.9M, and the error range at the stop state was measured to be about 0.4M and the stability of the air pressure sensor was confirmed. In this test, the measurement noise is filtered by the moving average method and the difference between the current atmospheric pressure data and the previous atmospheric pressure data is calculated using the filtered data . (CH) of altitude data of the moving position using the altitude data of the survey reference point, And obtained 3D position data by combining with acquired 2D position data.

FIG. 8 is a graph showing a 3D trajectory using absolute altitude data information in this test.

As can be seen from FIG. 8, it was proved that the utilization of the altitude information enables the location identification to be performed at a level that enables the inter-floor distinction of the underground 5th floor parking lot.

According to the absolute altitude detection system and the absolute altitude detection method of the construction site operator of the present invention as described above, the reference altitude value indicated by the current atmospheric pressure value can be obtained by considering the constant altitude value of the reference station and the deviation of the atmospheric pressure, By securing the altitude value, it is possible to more precisely estimate the altitude and position of the worker at the construction site.

In addition, the present invention can promptly structure the worker in the event of a dangerous situation in an underground structure or a high-rise building, and perform work instruction and communication for safe and smooth work progress at the worksite.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Accordingly, the embodiments disclosed herein are for the purpose of describing rather than limiting the technical spirit of the present invention, and it is apparent that the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Reference station DB server module
110: Reference country weather DB section
120: Reference station 3D coordinate DB unit
130: Reference altitude data calculation unit
200: Mobile station processing module
210: Reference station data receiving section
220: Mobile station air pressure detector
230: Absolute altitude data calculation unit
240:
300: Wireless communication module
S100: Current weather and altitude data collection phase
S200: Reference altitude data acquisition step
S300: Atmospheric pressure detection step of the mobile station
S400: Absolute altitude data calculation step
S500: Backup step

Claims (13)

A reference station 3D reference coordinate database unit for storing 3D reference coordinate data of the reference station, and a reference station coordinate database unit for storing current pressure data and 3D reference data from the weather database unit, A reference station database server module including a reference altitude data calculating section for calculating reference altitude data at a current air pressure based on altitude data from a coordinate database section;
A mobile station air pressure detector for detecting an air pressure at a position where an operator who is a mobile station is located; and a controller for setting the absolute altitude data of the mobile station based on the reference altitude data and the air pressure data detected by the mobile station air pressure detector, A mobile station processing module including an absolute altitude data calculating section for calculating an absolute altitude data calculating section; And
And a wireless communication module for wirelessly communicating between the reference station database server module and the mobile station processing module,
The reference altitude data calculator calculates the reference altitude data (H ^RS ) using the following equations (1) and (2)

(One)

(2)
From here,
Pn: data permutation nth atmospheric pressure data (millibar)
CP: Current Pressure (millibar)
MSLP: Mean-sea-level pressure
Absolute altitude detection system for construction site workers.
The method according to claim 1,
The reference station database server module receives the barometric pressure and 3D coordinate data of the reference station in real time or periodically and collects the barometric pressure data in the reference station weather database unit
Absolute altitude detection system for construction site workers.
3. The method of claim 2,
The reference station database server module is configured to receive the atmospheric pressure data and the 3D coordinate data so that the correction signal transmitted by the DGPS (Differential GPS) reference station includes the weather information of the weather data including the atmospheric pressure data
Absolute altitude detection system for construction site workers.
3. The method of claim 2,
The reference station database server module provides the atmospheric pressure data and the 3D coordinate data so that the altitude data of the reference survey point at each construction site and the atmospheric pressure data collected from the meteorological equipment installed at the reference survey point are included in the DGPS correction information Configured to receive
Absolute altitude detection system for construction site workers.
delete The method according to claim 1,
Calculating the absolute elevation data unit for calculating the absolute height data (H ^a) using Equation (3) below based on the reference height data (H ^RS) calculated with the current pressure data reference station (RSP)

(3)
From here,
RSP: Reference Station Pressure (Reference Station Pressure)
CP: Current Pressure
H ^RS : Reference altitude data
Absolute altitude detection system for construction site workers.
7. The method according to any one of claims 1 to 4,
And a backup unit for backing up all the data of the mobile station processing module
Absolute altitude detection system for construction site workers.
8. The method of claim 7,
The one or more components included in the mobile station processing module are configured to be implemented in a MEMS (Micro Electro Mechanical System)
Absolute altitude detection system for construction site workers.
A method for detecting an absolute altitude of a construction site operator,
Collecting and storing meteorological data including atmospheric pressure data of the reference station, which is the origin of the construction site, collecting and storing 3D reference coordinate data of the reference station including the altitude data;
Calculating reference altitude data at the current air pressure based on the current air pressure data from the reference air pressure data and the altitude data from the 3D reference coordinate data;
Detecting atmospheric pressure data of a position where the worker who is a mobile station is presently located;
And calculating the absolute altitude data of the operator based on the reference altitude data calculated based on the current reference standard atmospheric pressure data transmitted from the reference station,
The reference altitude data calculation uses the following equations (1) and (2) to calculate the reference altitude data (H ^RS )

(One)

(2)
From here,
Pn: data permutation nth atmospheric pressure data (millibar)
CP: Current Pressure (millibar)
MSLP: Mean-sea-level pressure
A method of detecting the absolute altitude of a construction site operator.
10. The method of claim 9,
The altitude data and the atmospheric pressure data of the reference station are supplied from the weather data including the atmospheric pressure data to the correction signal transmitted by the DGPS (Differential GPS) reference station, or the altitude data of the reference survey point for each construction site, Pressure data collected from the gas-phase data of the DGPS correction information
A method of detecting the absolute altitude of a construction site operator.
delete 10. The method of claim 9,
Calculating the absolute elevation data is for calculating the absolute height data (H ^a) using Equation (3) below based on the reference height data (H ^RS) calculated with the current pressure data reference station (RSP)

(3)
From here,
RSP: Reference Station Pressure (Reference Station Pressure)
CP: Current Pressure
H ^RS : Reference altitude data
A method of detecting the absolute altitude of a construction site operator.
10. The method of claim 9,
Back up all of the collected, stored, detected, and calculated data
A method of detecting the absolute altitude of a construction site operator.

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