JP2020085654A - Altitude calculation device and altitude calculation program - Google Patents

Altitude calculation device and altitude calculation program Download PDF

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JP2020085654A
JP2020085654A JP2018220254A JP2018220254A JP2020085654A JP 2020085654 A JP2020085654 A JP 2020085654A JP 2018220254 A JP2018220254 A JP 2018220254A JP 2018220254 A JP2018220254 A JP 2018220254A JP 2020085654 A JP2020085654 A JP 2020085654A
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pressure value
unit
sea level
altitude
predetermined position
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峻英 ▲高▼松
峻英 ▲高▼松
Takahide Takamatsu
大介 滑川
Daisuke Namekawa
大介 滑川
隆文 岡安
Takafumi Okayasu
隆文 岡安
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Denso Corp
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Denso Corp
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/06Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels by using barometric means

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Abstract

To calculate an altitude appropriately with good accuracy.SOLUTION: A portable terminal 1 comprises: a time information acquisition unit 2a for acquiring time information that indicates a prescribed time of day; a position information acquisition unit 2b for acquiring position information that indicates a prescribed position; an atmospheric pressure value acquisition unit 2c for acquiring an atmospheric pressure value at the prescribed position at the prescribed time of day; a weather observation point selection unit 2d for selecting a plurality of weather observation points in the vicinity of the prescribed position using the position information; a sea level pressure value acquisition unit 2e for acquiring a sea level pressure value observed on each prescribed cycle at the plurality of weather observation points from a weather observation server; a sea level pressure value calculation unit 2f for calculating a sea level pressure value at the prescribed position using the sea level pressure value for each of the plurality of weather observation points; a sea level pressure value complement unit 2g for complementing the sea level pressure value at the prescribed position by the time information; an atmospheric temperature acquisition unit 2h for acquiring the atmospheric temperature observed on each prescribed cycle at the plurality of weather observation points from the weather observation server; an atmospheric temperature specification unit 2i for specifying an atmospheric temperature at the prescribed position using the atmospheric temperature at each of the plurality of weather observation points; and an altitude calculation unit 2j for calculating an altitude using the atmospheric pressure value at the prescribed position, sea level pressure value at the prescribed position after complementing and atmospheric temperature at the prescribed position.SELECTED DRAWING: Figure 1

Description

本発明は、標高算出装置及び標高算出プログラムに関する。 The present invention relates to an altitude calculation device and an altitude calculation program.

例えばスマートフォン等の携帯端末は、標高を算出する機能を有している。特許文献1には、携帯端末において、現在位置の気圧値を取得し、現在位置付近の気象観測点で所定周期毎に観測された海面気圧値を気象観測サーバから取得し、その取得した現在位置の気圧値と気象観測点で観測された海面気圧値とを用いて標高を算出する手法が開示されている。 For example, a mobile terminal such as a smartphone has a function of calculating an altitude. In Patent Document 1, a mobile terminal acquires a barometric pressure value at a current position, acquires a sea level pressure value observed at predetermined intervals at a meteorological observation point near the current position from a meteorological observation server, and acquires the acquired current position. There is disclosed a method of calculating an altitude using the atmospheric pressure value of the sea level and the sea level atmospheric pressure value observed at the meteorological observation point.

特開2017−133987号公報JP, 2017-133987, A

しかしながら、特許文献1に開示されている手法では以下に示す問題がある。即ち、気象観測点では海面気圧値が所定周期毎にしか観測されないので、携帯端末が現在位置の気圧値を取得した時刻と気象観測点が海面気圧値を観測した時刻との時間差が誤差要因となる。又、携帯端末の現在位置と気象観測点との距離差も誤差要因となる。 However, the method disclosed in Patent Document 1 has the following problems. That is, since the sea level pressure value is observed only at predetermined intervals at the meteorological observation point, the time difference between the time when the mobile terminal acquires the pressure value at the current position and the time when the meteorological observation point observes the sea level pressure value is an error factor. Become. Further, the difference in distance between the current position of the mobile terminal and the weather observation point also causes an error.

本発明は、上記した事情に鑑みてなされたものであり、その目的は、様々な誤差要因を排除することで、標高を精度良く適切に算出することができる標高算出装置及び標高算出プログラムを提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide an altitude calculation device and an altitude calculation program capable of accurately and appropriately calculating the altitude by eliminating various error factors. To do.

請求項1に記載した発明によれば、時刻情報取得部(2a)は、所定時刻を示す時刻情報を取得する。位置情報取得部(2b)は、所定位置を示す位置情報を取得する。気圧値取得部(2c)は、所定時刻での所定位置の気圧値を取得する。気象観測点選択部(2d)は、位置情報取得部により取得された位置情報を用いて当該所定位置付近の気象観測点を複数選択する。 According to the invention described in claim 1, the time information acquisition unit (2a) acquires time information indicating a predetermined time. The position information acquisition unit (2b) acquires position information indicating a predetermined position. The atmospheric pressure value acquisition unit (2c) acquires the atmospheric pressure value at a predetermined position at a predetermined time. The weather observation point selection unit (2d) uses the position information acquired by the position information acquisition unit to select a plurality of weather observation points near the predetermined position.

海面気圧値取得部(2e)は、気象観測点選択部により選択された複数の気象観測点で所定周期毎に観測された海面気圧値を気象観測サーバから取得する。海面気圧値算出部(2f)は、海面気圧値取得部により取得された複数の気象観測点毎の海面気圧値を用いて所定位置の海面気圧値を算出する。海面気圧値補完部(2g)は、海面気圧値算出部により算出された所定位置の海面気圧値を時刻情報取得部により取得された時刻情報により補完する。 The sea level pressure value acquisition unit (2e) acquires, from the weather observation server, sea level pressure values observed at predetermined intervals at a plurality of weather observation points selected by the weather observation point selection unit. The sea level pressure value calculation unit (2f) calculates the sea level pressure value at a predetermined position using the sea level pressure value for each of the plurality of meteorological observation points acquired by the sea level pressure value acquisition unit. The sea level pressure value complementing unit (2g) complements the sea level pressure value at the predetermined position calculated by the sea level pressure value calculating unit with the time information acquired by the time information acquiring unit.

気温取得部(2h)は、気象観測点選択部により選択された複数の気象観測点で所定周期毎に観測された気温を気象観測サーバから取得する。気温特定部(2i,22c)は、気温取得部により取得された複数の気象観測点毎の気温を用いて所定位置の気温を特定する。標高算出部(2j)は、気圧値取得部により取得された所定位置の気圧値、海面気圧値補完部により補完された補完後の所定位置の海面気圧値、気温特定部により特定された所定位置の気温を用いて標高を算出する。 The temperature acquisition unit (2h) acquires, from the weather observation server, the temperatures observed at predetermined intervals at the plurality of weather observation points selected by the weather observation point selection unit. The air temperature identification unit (2i, 22c) identifies the air temperature at a predetermined position using the air temperature for each of the plurality of meteorological observation points acquired by the air temperature acquisition unit. The altitude calculation unit (2j) includes an atmospheric pressure value at a predetermined position acquired by the atmospheric pressure value acquisition unit, a sea surface pressure value at a predetermined position after being complemented by the sea surface pressure value complementing unit, and a predetermined position specified by the temperature specifying unit. Elevation is calculated using the temperature of.

気象観測サーバから取得した複数の気象観測点毎の海面気圧値を用いて所定位置の海面気圧値を算出し、その算出した所定位置の海面気圧値を時刻情報により補完するようにした。所定位置の海面気圧値を時刻情報により補完することで、携帯端末が所定位置の気圧値を取得した時刻と気象観測点が海面気圧値を観測した時刻との時間差による誤差要因を排除することができる。所定位置付近の複数の気象観測点で所定周期毎に観測された海面気圧値を気象観測サーバから取得し、その取得した複数の気象観測点毎の海面気圧値を用いて所定位置の海面気圧値を算出するようにした。所定位置付近の複数の気象観測点で所定周期毎に観測された海面気圧値を用いて所定位置の海面気圧値を算出することで、携帯端末の所定位置と気象観測点との距離差による誤差要因を排除することができる。これにより、様々な誤差要因を排除することで、標高を精度良く適切に算出することができる。 The sea level pressure value at a predetermined position is calculated using the sea level pressure value at each of a plurality of meteorological observation points acquired from the meteorological observation server, and the calculated sea level pressure value at the predetermined position is complemented by time information. By supplementing the sea level air pressure value at a predetermined position with time information, it is possible to eliminate an error factor due to the time difference between the time when the mobile terminal acquires the air pressure value at the predetermined position and the time when the weather observation point observes the sea surface pressure value. it can. The sea level pressure values observed at a predetermined cycle at multiple meteorological observation points near the specified position are acquired from the meteorological observation server, and the sea level pressure values at the specified position are obtained using the acquired sea level pressure values at each of the meteorological observation points. Was calculated. By calculating the sea level pressure value at a predetermined position using the sea level pressure values observed at a predetermined cycle at multiple weather observation points near the predetermined position, an error due to the distance difference between the predetermined position of the mobile terminal and the weather observation point Factors can be eliminated. As a result, the altitude can be calculated accurately and appropriately by eliminating various error factors.

第1実施形態の構成を示す機能ブロック図Functional block diagram showing the configuration of the first embodiment 駐車判定処理を示すフローチャートFlowchart showing parking determination process ユーザ操作判定処理を示すフローチャートFlowchart showing user operation determination processing 駐車位置の標高算出処理を示すフローチャートFlowchart showing altitude calculation processing of parking position 現在位置の標高算出処理を示すフローチャートFlowchart showing the altitude calculation process of the current position 携帯端末の位置及び複数の気象観測点を示す図Figure showing the location of the mobile terminal and multiple weather stations 駐車位置の海面気圧値を内挿補完する態様を示す図The figure which shows the aspect which interpolates and complements the sea level pressure value of a parking position. 駐車位置の海面気圧値を外挿補完する態様を示す図The figure which shows the aspect which extrapolates and supplements the sea level pressure value of a parking position. 第2実施形態の構成を示す機能ブロック図Functional block diagram showing the configuration of the second embodiment 駐車位置の標高算出処理を示すフローチャートFlowchart showing altitude calculation processing of parking position 現在位置の標高算出処理を示すフローチャートFlowchart showing the altitude calculation process of the current position 駐車位置の気温を内挿補完する態様を示す図The figure which shows the aspect which interpolates and complements the temperature of a parking position. 駐車位置の気温を外挿補完する態様を示す図The figure which shows the aspect which extrapolates and supplements the temperature of a parking position.

(第1実施形態)
以下、本発明の第1実施形態について図1から図8を参照して説明する。図1に示すように、携帯端末1(標高算出装置)は、制御部2と、無線通信部3と、位置測位部4と、気圧センサ5と、データ保存部6と、HMI(Human Machine Interface)部7とを有する。携帯端末1は、例えばユーザが携帯可能なスマートフォン等であり、音声通話機能、表示機能、操作受付機能、スケジュール機能等を有する。
(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 8. As shown in FIG. 1, the mobile terminal 1 (elevation calculation device) includes a control unit 2, a wireless communication unit 3, a position positioning unit 4, an atmospheric pressure sensor 5, a data storage unit 6, and an HMI (Human Machine Interface). ) Part 7 and. The mobile terminal 1 is, for example, a smartphone that can be carried by a user, and has a voice call function, a display function, an operation reception function, a schedule function, and the like.

制御部2は、CPU(Central Processing Unit)、ROM(Read Only Memory)、RAM(Random Access Memory)及びI/O(Input/Output)を有するマイクロコンピュータ(以下、マイコンと称する)により構成されている。制御部2は、非遷移的実体的記録媒体に格納されているコンピュータプログラムを実行することで、コンピュータプログラムに対応する処理を実行し、携帯端末1の動作全般を制御する。制御部2が実行するコンピュータプログラムには、標高算出プログラムが含まれる。 The control unit 2 is configured by a microcomputer (hereinafter, referred to as a microcomputer) having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an I/O (Input/Output). .. The control unit 2 executes the computer program stored in the non-transitional tangible recording medium to execute the process corresponding to the computer program and control the overall operation of the mobile terminal 1. The computer program executed by the control unit 2 includes an altitude calculation program.

無線通信部3は、例えば気象庁が管理する気象観測サーバ11との間でLTE(Long Term Evolution、登録商標)等の通信規格に準拠した広域無線通信を行う。気象観測サーバ11は、各種データを保存可能なデータ保存部12を有し、複数の気象観測点で所定周期(例えば1時間)毎に観測された海面気圧値及び気温を収集し、その収集した海面気圧値及び気温をデータベース化してデータ保存部12に保存している。気象観測サーバ11は、気象観測点を特定可能なデータ要求信号を携帯端末1から受信すると、その受信したデータ要求信号により特定される気象観測点の海面気圧値及び気温をデータ保存部12から抽出し、その抽出した海面気圧値及び気温を含むデータ応答信号を携帯端末1に送信する。 The wireless communication unit 3 performs wide area wireless communication conforming to a communication standard such as LTE (Long Term Evolution, registered trademark) with the weather observation server 11 managed by the Meteorological Agency, for example. The meteorological observation server 11 has a data storage unit 12 capable of storing various data, collects sea level pressure values and temperatures observed at a plurality of meteorological observation points at predetermined intervals (for example, one hour), and collects the collected values. The sea level pressure value and the air temperature are made into a database and stored in the data storage unit 12. When the weather observation server 11 receives from the mobile terminal 1 a data request signal that can specify a weather observation point, the weather observation server 11 extracts from the data storage unit 12 the sea level pressure and temperature of the meteorological observation point specified by the received data request signal. Then, the data response signal including the extracted sea level pressure value and temperature is transmitted to the mobile terminal 1.

位置測位部4は、例えばGPS(Global Positioning System)衛星から送信されるGPS信号を受信し、その受信したGPS信号から抽出したパラメータを演算して測位し、その測位結果を制御部2に出力する。位置測位部4は、地磁気センサ、加速度センサ等を含んで構成されていても良い。気圧センサ5は、気圧値を計測し、その計測結果を制御部2に出力する。気圧センサ5は、位置測位部4に含まれて構成されていても良い。データ保存部6は、各種データを保存可能である。HMI部7は、表示情報を表示する表示機能、音声情報を出力する機能、音声情報を入力する機能、ユーザ操作を受付ける機能等を有する。 The position positioning unit 4 receives a GPS signal transmitted from, for example, a GPS (Global Positioning System) satellite, calculates a parameter extracted from the received GPS signal, performs positioning, and outputs the positioning result to the control unit 2. .. The position measuring unit 4 may include a geomagnetic sensor, an acceleration sensor, and the like. The atmospheric pressure sensor 5 measures the atmospheric pressure value and outputs the measurement result to the control unit 2. The atmospheric pressure sensor 5 may be included in the position measuring unit 4. The data storage unit 6 can store various data. The HMI unit 7 has a display function of displaying display information, a function of outputting voice information, a function of inputting voice information, a function of accepting a user operation, and the like.

制御部2は、時刻情報取得部2aと、位置情報取得部2bと、気圧値取得部2cと、気象観測点選択部2dと、海面気圧値取得部2eと、海面気圧値算出部2fと、海面気圧値補完部2gと、気温取得部2hと、気温特定部2iと、標高算出部2jと、標高差通知部2kとを有する。これらの機能のブロック2a〜2kは、マイコンが実行するコンピュータプログラムの処理に該当する。 The control unit 2 includes a time information acquisition unit 2a, a position information acquisition unit 2b, an atmospheric pressure value acquisition unit 2c, a weather observation point selection unit 2d, a sea level pressure value acquisition unit 2e, and a sea level pressure value calculation unit 2f. The sea level pressure value complementing unit 2g, an air temperature acquiring unit 2h, an air temperature specifying unit 2i, an altitude calculating unit 2j, and an altitude difference notifying unit 2k are included. The blocks 2a to 2k of these functions correspond to the processing of the computer program executed by the microcomputer.

時刻情報取得部2aは、計時機能により所定時刻を示す時刻情報を取得する。位置情報取得部2bは、位置測位部4から測位結果を入力し、その入力した測位結果から所定位置を示す位置情報を取得する。位置測位部4により取得される位置情報には標高は含まれない。気圧値取得部2cは、気圧センサ5から計測結果を入力し、その入力した計測結果から所定位置の気圧値を取得する。気象観測点選択部2dは、所定位置が位置情報取得部2bにより取得されると、その取得された所定位置を用いて当該所定位置付近の気象観測点を複数選択する。 The time information acquisition unit 2a acquires time information indicating a predetermined time by the timekeeping function. The position information acquisition unit 2b inputs the positioning result from the position positioning unit 4, and acquires the position information indicating the predetermined position from the input positioning result. The altitude is not included in the position information acquired by the position positioning unit 4. The atmospheric pressure value acquisition unit 2c inputs the measurement result from the atmospheric pressure sensor 5 and acquires the atmospheric pressure value at a predetermined position from the input measurement result. When the predetermined position is acquired by the position information acquisition unit 2b, the weather observation point selection unit 2d uses the acquired predetermined position to select a plurality of weather observation points near the predetermined position.

海面気圧値取得部2eは、複数の気象観測点が気象観測点選択部2dにより選択され、その選択された複数の気象観測点を特定可能なデータ要求信号が無線通信部3から気象観測サーバ11に送信され、その選択された複数の気象観測点で所定周期毎に観測された海面気圧値を特定可能なデータ応答信号が気象観測サーバ11から無線通信部3に受信されることで、複数の気象観測点毎の海面気圧値を取得する。 In the sea surface pressure value acquisition unit 2e, a plurality of meteorological observation points are selected by the meteorological observation point selection unit 2d, and a data request signal that can specify the selected plurality of meteorological observation points is sent from the wireless communication unit 3 to the meteorological observation server 11 Is transmitted to the wireless communication unit 3 from the meteorological observation server 11 by receiving a data response signal capable of specifying the sea surface pressure value observed at predetermined intervals at the selected plural meteorological observation points. Obtain the sea level pressure value for each weather station.

海面気圧値算出部2fは、複数の気象観測点毎の海面気圧値が海面気圧値取得部2eにより取得されると、その取得された複数の気象観測点毎の海面気圧値を用いて当該複数の気象観測点の緯度経度をパラメータとして最小二乗法により所定位置の海面気圧値を算出する。 When the sea level pressure values for each of the plurality of meteorological observation points are acquired by the sea level pressure value acquisition section 2e, the sea level pressure value calculation unit 2f uses the acquired sea level pressure values for each of the plurality of meteorological observation points. Using the latitude and longitude of the meteorological observation point as a parameter, the sea level pressure value at a predetermined position is calculated by the least squares method.

海面気圧値補完部2gは、所定位置の海面気圧値が海面気圧値算出部2fにより算出されると、その算出された所定位置の海面気圧値を時刻情報取得部2aにより取得された時刻情報により補完する。海面気圧値補完部2gは、所定時刻よりも新しい時刻の海面気圧値が存在すれば、所定位置の海面気圧値を内挿補完する。一方、海面気圧値補完部2gは、所定時刻よりも新しい時刻の海面気圧値が存在しなければ、所定位置の海面気圧値を外挿補完する。 When the sea level pressure value at a predetermined position is calculated by the sea level pressure value calculation unit 2f, the sea level pressure value complementing unit 2g uses the calculated sea level pressure value at the predetermined position based on the time information acquired by the time information acquisition unit 2a. Complement. The sea level pressure value complementing unit 2g interpolates and complements the sea level pressure value at a predetermined position if there is a sea level pressure value at a time later than the predetermined time. On the other hand, the sea surface pressure value complementing unit 2g extrapolates the sea surface pressure value at a predetermined position if there is no sea surface pressure value at a time newer than the predetermined time.

気温取得部2hは、複数の気象観測点が気象観測点選択部2dにより選択され、その選択された複数の気象観測点を特定可能なデータ要求信号が無線通信部3から気象観測サーバ11に送信され、その選択された複数の気象観測点で所定周期毎に観測された気温を特定可能なデータ応答信号が気象観測サーバ11から無線通信部3に受信されることで、複数の気象観測点毎の気温を取得する。 In the temperature acquisition unit 2h, a plurality of meteorological observation points are selected by the meteorological observation point selection unit 2d, and a data request signal capable of specifying the selected plurality of meteorological observation points is transmitted from the wireless communication unit 3 to the meteorological observation server 11. The wireless communication unit 3 receives from the meteorological observation server 11 a data response signal capable of specifying the temperature observed at each of the selected plural meteorological observation points in a predetermined cycle. To get the temperature.

気温特定部2iは、複数の気象観測点毎の気温が気温取得部2hにより取得されると、その取得された複数の気象観測点毎の気温を用いて所定位置の気温を特定する。気温特定部2iは、複数の気象観測点毎の気温のうち所定位置から直近の気象観測点の気温を特定する。 When the air temperature for each of the plurality of meteorological observation points is acquired by the air temperature acquisition unit 2h, the air temperature identifying unit 2i identifies the air temperature at a predetermined position using the acquired air temperature for each of the plurality of meteorological observation points. The air temperature identifying unit 2i identifies the air temperature at the nearest weather observation point from the predetermined position among the temperatures at each of the plurality of weather observation points.

標高算出部2jは、気圧値取得部2cにより取得された所定位置の気圧値、海面気圧値補完部2gにより補完された補完後の所定位置の海面気圧値、気温特定部に2iにより特定された所定位置の気温を用いて以下の演算式により標高を算出する。

Figure 2020085654
上記した演算式(1)において、Pは所定位置の気圧値[hPa]、Pは海面気圧値[hPa]、Tは気温[℃]、hは標高[m]である。 The altitude calculation unit 2j specifies the atmospheric pressure value at the predetermined position acquired by the atmospheric pressure value acquisition unit 2c, the sea level atmospheric pressure value at the predetermined position after being complemented by the sea level atmospheric pressure value complementing unit 2g, and the temperature specification unit 2i. The altitude is calculated by the following arithmetic expression using the temperature at a predetermined position.
Figure 2020085654
In the above arithmetic expression (1), P is a pressure value [hPa] at a predetermined position, P 0 is a sea level pressure value [hPa], T is an air temperature [°C], and h is an altitude [m].

又、標高算出部2jは、複数位置の標高を算出すると、その算出した複数位置の標高を用いて複数位置間の標高差を算出する。標高差通知部2kは、複数位置間の標高差が標高算出部2jにより算出されると、その算出された標高差を表示する等してユーザに通知する。 Further, after calculating the altitudes at a plurality of positions, the altitude calculating unit 2j calculates the altitude difference between the plurality of positions using the calculated altitudes at the plurality of positions. When the altitude difference between the plurality of positions is calculated by the altitude calculating unit 2j, the altitude difference notifying unit 2k notifies the user by displaying the calculated altitude difference.

次に、上記した構成の作用について図2から図7を参照して説明する。本実施形態では、ユーザが携帯端末1と共に車両で移動しており、例えば立体駐車場のような立体的な駐車位置に駐車して車両から離れた後に当該駐車位置まで戻る使用形態を想定する。この場合、制御部2は、駐車時刻での駐車位置の標高を算出し、現在時刻での現在位置の標高を算出し、その算出した駐車位置と現在位置との間の標高差を算出してユーザに通知する。制御部2は、駐車判定処理及びユーザ操作判定処理を所定周期で行う。以下、駐車判定処理及びユーザ操作判定処理について順次説明する。 Next, the operation of the above configuration will be described with reference to FIGS. In the present embodiment, it is assumed that the user is moving together with the mobile terminal 1 in a vehicle, parks in a three-dimensional parking position such as a three-dimensional parking lot, leaves the vehicle, and then returns to the parking position. In this case, the control unit 2 calculates the altitude of the parking position at the parking time, calculates the altitude of the current position at the current time, and calculates the altitude difference between the calculated parking position and the current position. Notify the user. The control unit 2 performs the parking determination process and the user operation determination process at a predetermined cycle. Hereinafter, the parking determination process and the user operation determination process will be sequentially described.

(1)駐車判定処理
制御部2は、駐車判定処理の開始イベントの成立を待機しており、駐車判定処理の開始イベントが成立すると、駐車判定処理を開始し、駐車したか否かを判定する(S1)。制御部2は、例えば運転中にナビゲーション機器等の車載機器と携帯端末1との近距離通信回線が自動接続される使用形態であれば、車載機器と携帯端末1との近距離通信回線が自動切断されたか否かを判定することで、駐車したか否かを判定する。制御部2は、例えば近距離通信回線が接続されており、駐車していないと判定すると(S1:NO)、駐車判定処理を終了し、次の駐車判定処理の開始イベントの成立を待機する。
(1) Parking determination process The control unit 2 waits for the establishment of the start event of the parking determination process, and when the start event of the parking determination process is established, the parking determination process is started to determine whether or not the vehicle is parked. (S1). If the control unit 2 is in a usage mode in which a short-range communication line between an on-vehicle device such as a navigation device and the mobile terminal 1 is automatically connected during driving, the short-range communication line between the on-vehicle device and the mobile terminal 1 is automatically set. By determining whether or not the vehicle is disconnected, it is determined whether or not the vehicle is parked. For example, when the control unit 2 is connected to the short-distance communication line and determines that the vehicle is not parked (S1: NO), the control unit 2 ends the parking determination process and waits for establishment of a start event of the next parking determination process.

制御部2は、例えば近距離通信回線が切断され、駐車したと判定すると(S1:YES)、その時点の時刻を駐車時刻としてデータ保存部6に保存し(S2、時刻情報取得手順)、その時点の位置を駐車位置としてデータ保存部6に保存する(S3、位置情報取得手順)。制御部2は、その時点の気圧値を駐車時気圧値としてデータ保存部6に保存し(S4、気圧値取得手順)、駐車判定処理を終了し、次の駐車判定処理の開始イベントの成立を待機する。 When the control unit 2 determines that the vehicle is parked due to disconnection of the short-distance communication line (S1: YES), the control unit 2 stores the time at that time as the parking time in the data storage unit 6 (S2, time information acquisition procedure), and The position at the time point is stored in the data storage unit 6 as a parking position (S3, position information acquisition procedure). The control unit 2 stores the atmospheric pressure value at that time in the data storage unit 6 as the parking atmospheric pressure value (S4, atmospheric pressure value acquisition procedure), ends the parking determination process, and establishes the start event of the next parking determination process. stand by.

(2)ユーザ操作判定処理
制御部2は、ユーザ操作判定処理の開始イベントの成立を待機しており、ユーザ操作判定処理の開始イベントが成立すると、ユーザ操作判定処理を開始し、標高差を求めるユーザ操作が行われたか否かを判定する(S11)。制御部2は、例えば所定のスイッチが操作されたり所定のアプリプログラムが起動されたりしたか否かを判定することで、標高差を求めるユーザ操作が行われたか否かを判定する。制御部2は、標高差を求めるユーザ操作が行われていないと判定すると(S11:NO)、ユーザ操作判定処理を終了し、次のユーザ操作判定処理の開始イベントの成立を待機する。
(2) User Operation Determination Process The control unit 2 waits for the start event of the user operation determination process to be established. When the start event of the user operation determination process is established, the user operation determination process is started and the altitude difference is obtained. It is determined whether or not a user operation has been performed (S11). The control unit 2 determines whether or not a user operation for obtaining an altitude difference is performed by determining whether or not a predetermined switch is operated or a predetermined application program is activated, for example. When the control unit 2 determines that the user operation for obtaining the altitude difference is not performed (S11: NO), the control unit 2 ends the user operation determination process and waits for establishment of a start event of the next user operation determination process.

制御部2は、例えば所定のスイッチが操作されたり所定のアプリプログラムが起動されたりし、標高差を求めるユーザ操作が行われたと判定すると(S11:YES)、その時点の時刻を現在時刻としてデータ保存部6に保存し(S12、時刻情報取得手順)、その時点の位置を現在位置としてデータ保存部6に保存する(S13、位置情報取得手順)。制御部2は、その時点の気圧値を現在気圧値としてデータ保存部6に保存し(S14、気圧値取得手順)、駐車位置の標高算出処理に移行する(S15)。 When the control unit 2 determines that a user operation for obtaining an altitude difference is performed, for example, a predetermined switch is operated or a predetermined application program is started (S11: YES), the time at that time is set as the current time and the data The data is stored in the storage unit 6 (S12, time information acquisition procedure), and the position at that time is stored as the current position in the data storage unit 6 (S13, position information acquisition procedure). The control unit 2 stores the atmospheric pressure value at that time as the current atmospheric pressure value in the data storage unit 6 (S14, atmospheric pressure value acquisition procedure), and shifts to altitude calculation processing of the parking position (S15).

制御部2は、駐車位置の標高算出処理を開始すると、図6に示すように、データ保存部6に保存されている駐車位置の緯度経度を用いて当該駐車位置付近の気象観測点を複数選択する(S21、気象観測点選択手順)。図6では、制御部2は、駐車位置の周囲のA点(緯度N1,経度E1)、B点(緯度N2,経度E2)、C点(緯度N3,経度E3)の3点を気象観測点として選択する場合を例示している。尚、制御部2は、選択する気象観測点を2点としても良いし4点以上としても良い。 When the altitude calculation processing of the parking position is started, the control unit 2 selects a plurality of meteorological observation points near the parking position by using the latitude and longitude of the parking position stored in the data storage unit 6 as shown in FIG. Yes (S21, weather observation point selection procedure). In FIG. 6, the control unit 2 sets three points around the parking position, that is, a point A (latitude N1, longitude E1), a point B (latitude N2, longitude E2), and a point C (latitude N3, longitude E3) as meteorological observation points. The case of selecting as is illustrated. The control unit 2 may select two or four or more meteorological observation points.

制御部2は、複数の気象観測点を選択すると、その選択した複数の気象観測点を特定可能なデータ要求信号を無線通信部3から気象観測サーバ11に送信させる。制御部2は、その選択した複数の気象観測点で所定周期毎に観測された海面気圧値及び気温を特定可能なデータ応答信号が気象観測サーバ11から無線通信部3に受信されることで、複数の気象観測点毎の海面気圧値及び気温を取得する(S22、海面気圧値取得手順、気温取得手順)。 When the plurality of meteorological observation points are selected, the control unit 2 causes the wireless communication unit 3 to transmit a data request signal capable of specifying the selected plurality of meteorological observation points to the meteorological observation server 11. The control unit 2 receives from the weather observation server 11 the wireless communication unit 3 a data response signal capable of specifying the sea surface pressure value and the temperature observed at predetermined intervals at the selected plurality of weather observation points, The sea level pressure value and the temperature for each of a plurality of meteorological observation points are acquired (S22, sea level pressure value acquisition procedure, temperature acquisition procedure).

制御部2は、複数の気象観測点毎の海面気圧値を用いて当該複数の気象観測点の緯度経度をパラメータとして最小二乗法により駐車位置の海面気圧値を算出する(S23、海面気圧値算出手順)。制御部2は、データ保存部6に保存されている駐車時刻よりも新しい時刻の海面気圧値が存在するか否かを判定する(S24)。 The control unit 2 uses the sea level pressure values of each of the plurality of weather observation points to calculate the sea level pressure value of the parking position by the least squares method using the latitude and longitude of the plurality of weather observation points as parameters (S23, sea level pressure value calculation). procedure). The control unit 2 determines whether or not there is a sea level pressure value at a time newer than the parking time stored in the data storage unit 6 (S24).

制御部2は、駐車時刻よりも新しい時刻の海面気圧値が存在すると判定すると(S24:YES)、図7に示すように、駐車時刻の直前の海面気圧値と直後の海面気圧値とを用いて駐車位置の海面気圧値を内挿補完する(S25、海面気圧値補完手順)。一方、制御部2は、駐車時刻よりも新しい時刻の海面気圧値が存在しないと判定すると(S24:NO)、図8に示すように、駐車時刻から過去の複数の海面気圧値を用いて駐車位置の海面気圧値を外挿補完する(S26、海面気圧値補完手順)。制御部2は、複数の気象観測点毎の気温のうち駐車位置から直近の気象観測点の気温を特定する(S27、気温特定手順)。 When the control unit 2 determines that the sea level pressure value at a time newer than the parking time exists (S24: YES), the control unit 2 uses the sea level pressure value immediately before the parking time and the sea level pressure value immediately after the parking time, as shown in FIG. The sea level pressure value at the parking position is interpolated and complemented (S25, sea level pressure value complementing procedure). On the other hand, when the control unit 2 determines that there is no sea surface pressure value at a time newer than the parking time (S24: NO), as shown in FIG. 8, parking is performed using a plurality of sea surface pressure values past from the parking time. Extrapolation complements the sea level pressure value at the position (S26, sea level pressure value complementing procedure). The control unit 2 identifies the temperature of the weather observation point closest to the parking position among the temperatures of each of the plurality of weather observation points (S27, temperature identification procedure).

制御部2は、データ保存部6に保存されている駐車時気圧値、補完した補完後の駐車位置の海面気圧値、特定した駐車位置から直近の気象観測点の気温を用い、上記した(1)の演算式により駐車位置の標高を算出する(S28、標高算出手順)。制御部2は、このようにして駐車位置の標高を算出すると、駐車位置の標高算出処理を終了し、ユーザ操作判定処理に復帰する。制御部2は、ユーザ操作判定処理に復帰すると、現在位置の標高算出処理に移行する(S16)。 The control unit 2 uses the barometric pressure value at the time of parking stored in the data storage unit 6, the sea surface pressure value at the complemented parking position, and the temperature at the meteorological observation point closest to the specified parking position, and the above (1 ) The altitude of the parking position is calculated by the arithmetic expression (S28, altitude calculation procedure). When the altitude of the parking position is calculated in this way, the control unit 2 ends the altitude calculating process of the parking position and returns to the user operation determining process. After returning to the user operation determination process, the control unit 2 proceeds to the altitude calculation process for the current position (S16).

制御部2は、現在位置の標高算出処理を開始すると、データ保存部6に保存されている現在位置の緯度経度を用いて当該現在位置付近の気象観測点を複数選択する(S31、気象観測点選択手順)。この場合、制御部2は、駐車位置と現在位置の距離差が比較的小さければ、駐車位置の標高算出処理で選択した複数の気象観測点と同じ気象観測点を複数選択する。一方、制御部2は、駐車位置と現在位置の距離差が比較的大きければ、駐車位置の標高算出処理で選択した複数の気象観測点とは異なる気象観測点を複数選択する。 When the altitude calculation process of the current position is started, the control unit 2 uses the latitude and longitude of the current position stored in the data storage unit 6 to select a plurality of weather observation points near the current position (S31, weather observation point). Selection procedure). In this case, if the distance difference between the parking position and the current position is relatively small, the control unit 2 selects a plurality of meteorological observation points that are the same as the plurality of meteorological observation points selected in the altitude calculation processing of the parking position. On the other hand, if the distance difference between the parking position and the current position is relatively large, the control unit 2 selects a plurality of meteorological observation points different from the plurality of meteorological observation points selected in the altitude calculation processing of the parking position.

制御部2は、複数の気象観測点を選択すると、その選択した複数の気象観測点を特定可能なデータ要求信号を無線通信部3から気象観測サーバ11に送信させる。制御部2は、その選択した複数の気象観測点で所定周期毎に観測された海面気圧値及び気温を特定可能なデータ応答信号が気象観測サーバ11から無線通信部3に受信されることで、複数の気象観測点毎の海面気圧値及び気温を取得する(S32、海面気圧値取得手順、気温取得手順)。 When the plurality of meteorological observation points are selected, the control unit 2 causes the wireless communication unit 3 to transmit a data request signal capable of specifying the selected plurality of meteorological observation points to the meteorological observation server 11. The control unit 2 receives from the weather observation server 11 the wireless communication unit 3 a data response signal capable of specifying the sea surface pressure value and the temperature observed at predetermined intervals at the selected plurality of weather observation points, The sea level pressure value and the temperature for each of a plurality of meteorological observation points are acquired (S32, sea level pressure value acquisition procedure, temperature acquisition procedure).

制御部2は、複数の気象観測点毎の海面気圧値を用いて当該複数の気象観測点の緯度経度をパラメータとして最小二乗法により現在位置の海面気圧値を算出する(S33、海面気圧値算出手順)。制御部2は、現在時刻から過去の複数の海面気圧値を用いて現在位置の海面気圧値を外挿補完する(S34、海面気圧値補完手順)。制御部2は、複数の気象観測点毎の気温のうち現在位置から直近の気象観測点の気温を特定する(S35、気温特定手順)。 The control unit 2 uses the sea level pressure values of each of the plurality of weather observation points to calculate the sea level pressure value of the current position by the least squares method using the latitude and longitude of the plurality of weather observation points as parameters (S33, sea level pressure value calculation). procedure). The control unit 2 extrapolates and complements the sea level pressure value at the current position by using the past sea level pressure values from the current time (S34, sea level pressure value complementing procedure). The control unit 2 identifies the temperature of the weather observation point closest to the current position among the temperatures of the plurality of weather observation points (S35, temperature identification procedure).

制御部2は、データ保存部6に保存されている現在時気圧値、補完した補完後の現在位置の海面気圧値、特定した現在位置から直近の気象観測点の気温を用い、上記した(1)の演算式により現在位置の標高を算出する(S36、標高算出手順)。制御部2は、このようにして現在位置の標高を算出すると、現在位置の標高算出処理を終了し、ユーザ操作判定処理に復帰する。 The control unit 2 uses the current time atmospheric pressure value stored in the data storage unit 6, the sea level atmospheric pressure value at the current position after the complementation, and the temperature at the meteorological observation point closest to the specified current position, as described above (1). ) The altitude at the current position is calculated by the arithmetic expression (S36, altitude calculation procedure). When the altitude of the current position is calculated in this way, the control unit 2 terminates the altitude calculation process of the current position and returns to the user operation determination process.

制御部2は、ユーザ操作判定処理に復帰すると、駐車位置の標高算出処理で算出した駐車位置の標高と、現在位置の標高算出処理で算出した現在位置の標高との差分を計算し、現在位置から駐車位置までの標高差を算出する(S17)。そして、制御部2は、このようにして算出した現在位置から駐車位置までの標高差を表示する等してユーザに通知し(S18)、ユーザ操作判定処理を終了する。 When returning to the user operation determination process, the control unit 2 calculates the difference between the altitude of the parking position calculated in the altitude calculation process of the parking position and the altitude of the current position calculated in the altitude calculation process of the current position, and calculates the current position. The altitude difference from the parking position to the parking position is calculated (S17). Then, the control unit 2 notifies the user by displaying the altitude difference from the current position to the parking position thus calculated (S18), and ends the user operation determination process.

以上に説明したように第1実施形態によれば、以下に示す作用効果を得ることができる。携帯端末1において、気象観測サーバ11から取得した複数の気象観測点毎の海面気圧値を用いて駐車位置や現在位置の海面気圧値を算出し、その算出した駐車位置や現在位置の海面気圧値を時刻情報により補完するようにした。駐車位置や現在位置の海面気圧値を時刻情報により補完することで、携帯端末1が駐車位置や現在位置の気圧値を取得した時刻と気象観測点が海面気圧値を観測した時刻との時間差による誤差要因を排除することができる。駐車位置や現在位置付近の複数の気象観測点で所定周期毎に観測された海面気圧値を気象観測サーバ11から取得し、その取得した複数の気象観測点毎の海面気圧値を用いて駐車位置や現在位置の海面気圧値を算出するようにした。駐車位置や現在位置付近の複数の気象観測点で所定周期毎に観測された海面気圧値を用いて駐車位置や現在位置の海面気圧値を算出することで、携帯端末1の駐車位置や現在位置と気象観測点との距離差による誤差要因を排除することができる。これにより、様々な誤差要因を排除することで、標高を精度良く適切に算出することができる。 As described above, according to the first embodiment, the following operational effects can be obtained. In the mobile terminal 1, the sea level pressure value at each of the plurality of meteorological observation points acquired from the meteorological observation server 11 is used to calculate the sea level pressure value at the parking position or the current position, and the calculated sea level pressure value at the parking position or the current position is calculated. Was complemented with time information. By supplementing the sea level pressure value at the parking position or the current position with the time information, the time difference between the time when the mobile terminal 1 acquires the pressure value at the parking position or the current position and the time when the weather observation point observes the sea level pressure value The error factor can be eliminated. The sea level pressure values observed at predetermined intervals at a plurality of meteorological observation points near the parking position and the current position are acquired from the meteorological observation server 11, and the parking position is obtained using the acquired sea level pressure values at each of the meteorological observation points. And the sea level pressure value at the current position are calculated. The parking position or the current position of the mobile terminal 1 is calculated by calculating the sea level pressure value of the parking position or the current position by using the sea level pressure value observed every predetermined period at a plurality of meteorological observation points near the parking position or the current position. It is possible to eliminate the error factor due to the distance difference between the weather observation point and. As a result, the altitude can be calculated accurately and appropriately by eliminating various error factors.

携帯端末1において、駐車時刻よりも新しい時刻の海面気圧値が存在する場合に、駐車位置の海面気圧値を時刻情報により内挿補完するようにした。駐車位置の海面気圧値を内挿補完することで適切に補完することができる。
携帯端末1において、駐車時刻よりも新しい時刻の海面気圧値が存在しない場合に、駐車位置の海面気圧値を時刻情報により外挿補完するようにした。駐車位置の海面気圧値を外挿補完することで適切に補完することができる。
携帯端末1において、複数の気象観測点毎の気温のうち駐車位置や現在位置から直近の気象観測点の気温を特定するようにした。駐車位置や現在位置から直近の気象観測点の気温を用い、標高を算出することができる。
In the mobile terminal 1, when the sea level pressure value at a time newer than the parking time exists, the sea level pressure value at the parking position is interpolated and complemented by the time information. The sea level pressure value at the parking position can be interpolated and complemented appropriately.
In the mobile terminal 1, when the sea level pressure value at a time newer than the parking time does not exist, the sea level pressure value at the parking position is extrapolated and complemented by the time information. The sea level pressure value at the parking position can be appropriately supplemented by extrapolation.
In the mobile terminal 1, among the temperatures at each of the plurality of meteorological observation points, the temperature at the nearest meteorological observation point from the parking position or the current position is specified. The altitude can be calculated by using the temperature at the nearest meteorological observation point from the parking position or the current position.

(第2実施形態)
次に、本発明の第2実施形態について図9から図13を参照して説明する。尚、前述した第1の実施形態と同一部分については説明を省略し、異なる部分について説明する。第1実施形態は、気象観測サーバ11から取得した海面気圧値だけを補完する構成であるが、第2実施形態は、海面気圧値に加えて気温も補完する構成である。
(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. 9 to 13. The description of the same parts as those in the first embodiment will be omitted, and different parts will be described. The first embodiment is a configuration that complements only the sea level pressure value acquired from the meteorological observation server 11, but the second embodiment is a configuration that complements the temperature in addition to the sea level pressure value.

携帯端末21において、制御部22は、第1実施形態で説明した各部2a〜2h,2j,2kに加え、気温算出部22aと、気温補完部22bとを有し、気温特定部2iに代えて気温特定部22cを有する。気温算出部22aは、複数の気象観測点毎の気温が気温取得部2hにより取得されると、その取得された複数の気象観測点毎の気温を用いて当該複数の気象観測点の緯度経度をパラメータとして最小二乗法により所定位置の気温を算出する。 In the mobile terminal 21, the control unit 22 has an air temperature calculation unit 22a and an air temperature complementing unit 22b in addition to the respective units 2a to 2h, 2j, and 2k described in the first embodiment, and replaces the air temperature specifying unit 2i. It has an air temperature specifying unit 22c. When the temperature of each of the plurality of meteorological observation points is acquired by the temperature acquisition unit 2h, the temperature calculation unit 22a uses the acquired temperatures of each of the plurality of meteorological observation points to determine the latitude and longitude of the plurality of meteorological observation points. As a parameter, the temperature at a predetermined position is calculated by the method of least squares.

気温補完部22bは、所定位置の気温が気温算出部22aにより算出されると、その算出された所定位置の気温を時刻情報取得部2aにより取得された時刻情報により補完する。気温補完部22bは、所定時刻よりも新しい時刻の気温が存在すれば、所定位置の気温を内挿補完する。一方、気温補完部22bは、所定時刻よりも新しい時刻の気温が存在しなければ、所定位置の気温を外挿補完する。 When the temperature at the predetermined position is calculated by the temperature calculating unit 22a, the temperature complementing unit 22b complements the calculated temperature at the predetermined position by the time information acquired by the time information acquiring unit 2a. The temperature complementing unit 22b interpolates and complements the temperature at a predetermined position if there is a temperature at a time newer than the predetermined time. On the other hand, if the temperature at a time newer than the predetermined time does not exist, the temperature complementation unit 22b extrapolates the temperature at the predetermined position.

気温特定部22cは、所定位置の気温が気温算出部22aにより算出され、その算出された所定位置の気温が気温補完部22bにより補完されると、その補完後の所定位置の気温を特定する。 When the temperature at a predetermined position is calculated by the temperature calculating unit 22a and the calculated temperature at the predetermined position is complemented by the temperature complementing unit 22b, the temperature specifying unit 22c specifies the temperature at the predetermined position after the complement.

次に、上記した構成の作用について図10から図13を参照して説明する
この場合、制御部22は、駐車位置の標高算出処理において、複数の気象観測点毎の海面気圧値及び気温を取得すると、その取得した複数の気象観測点毎の海面気圧値及び気温を用いて当該複数の気象観測点の緯度経度をパラメータとして最小二乗法により駐車位置の海面気圧値及び気温を算出する(S41、海面気圧値算出手順、気温算出手順)。制御部22は、データ保存部6に保存されている駐車時刻よりも新しい時刻の海面気圧値及び気温が存在するか否かを判定する(S42)。
Next, the operation of the above-described configuration will be described with reference to FIGS. 10 to 13. In this case, the control unit 22 acquires the sea level pressure value and the air temperature for each of a plurality of meteorological observation points in the altitude calculation processing of the parking position. Then, the sea level pressure value and the air temperature at the parking position are calculated by the least squares method using the obtained sea level pressure value and the temperature for each of the plurality of weather observation points with the latitude and longitude of the plurality of weather observation points as parameters (S41, Sea level pressure calculation procedure, temperature calculation procedure). The control unit 22 determines whether or not the sea level pressure value and the air temperature at a time newer than the parking time stored in the data storage unit 6 exist (S42).

制御部22は、駐車時刻よりも新しい時刻の海面気圧値及び気温が存在すると判定すると(S42:YES)、前述した図7に示したように、駐車時刻の直前の海面気圧値と直後の海面気圧値とを用いて駐車位置の海面気圧値を内挿補完し(S43、海面気圧値補完手順)、図12に示すように、駐車時刻の直前の気温と直後の気温とを用いて駐車位置の気温を内挿補完する(S43、気温補完手順)。一方、制御部22は、駐車時刻よりも新しい時刻の海面気圧値及び気温が存在しないと判定すると(S42:NO)、前述した図8に示したように、駐車時刻から過去の複数の海面気圧値を用いて駐車位置の海面気圧値を外挿補完し(S44、海面気圧値補完手順)、図13に示すように、駐車時刻から過去の複数の気温を用いて駐車位置の気温を外挿補完する(S44、気温補完手順)。制御部22は、補完後の気温を特定する(S45、気温特定手順)。 When the control unit 22 determines that the sea surface pressure value and the air temperature at a time newer than the parking time are present (S42: YES), the sea surface pressure value immediately before the parking time and the sea surface immediately after the parking time are determined as shown in FIG. The sea level pressure value at the parking position is interpolated and complemented using the barometric pressure value (S43, sea level pressure value complementing procedure), and as shown in FIG. 12, the parking position is calculated using the temperature immediately before and immediately after the parking time. The temperature is complemented by interpolation (S43, temperature complementing procedure). On the other hand, when the control unit 22 determines that there is no sea level pressure value and temperature at a time newer than the parking time (S42: NO), as shown in FIG. The sea level pressure value at the parking position is extrapolated using the value (S44, sea level pressure value complementing procedure), and as shown in FIG. 13, the temperature at the parking position is extrapolated using a plurality of past temperatures. Supplement (S44, temperature supplement procedure). The control unit 22 identifies the temperature after supplementation (S45, temperature identification procedure).

制御部22は、データ保存部6に保存されている駐車時気圧値、補完した補完後の駐車位置の海面気圧値、特定した補完後の気温を用い、上記した(1)の演算式により駐車位置の標高を算出し(S46、標高算出手順)、駐車位置の標高算出処理を終了し、ユーザ操作判定処理に復帰する。 The control unit 22 uses the parking air pressure value stored in the data storage unit 6, the sea level air pressure value at the supplemented and supplemented parking position, and the specified supplemented air temperature, and uses the arithmetic expression (1) to perform parking. The altitude of the position is calculated (S46, altitude calculation procedure), the altitude calculation process of the parking position is terminated, and the process returns to the user operation determination process.

制御部22は、現在位置の標高算出処理において、複数の気象観測点毎の海面気圧値及び気温を取得すると、その取得した複数の気象観測点毎の海面気圧値及び気温を用いて当該複数の気象観測点の緯度経度をパラメータとして最小二乗法により現在位置の海面気圧値及び気温を算出する(S51、海面気圧値算出手順)。制御部22は、現在時刻から過去の複数の海面気圧値を用いて現在位置の海面気圧値を外挿補完し、現在時刻から過去の複数の気温を用いて現在位置の気温を外挿補完する(S52、海面気圧値補完手順、気温補完手順)。制御部22は、補完後の気温を特定する(S53、気温特定手順)。 In the altitude calculation process of the current position, the control unit 22 acquires the sea level pressure value and the air temperature for each of the plurality of meteorological observation points, and uses the acquired sea level pressure value and the air temperature for each of the plurality of meteorological observation points. The sea level pressure value and temperature at the current position are calculated by the least squares method using the latitude and longitude of the meteorological observation point as a parameter (S51, sea level pressure value calculation procedure). The control unit 22 extrapolates and complements the sea level pressure value at the current position using a plurality of past sea level pressure values from the current time, and extrapolates the temperature at the current position using a plurality of past temperature levels from the current time. (S52, sea level pressure value complementing procedure, temperature complementing procedure). The control unit 22 identifies the temperature after the supplement (S53, temperature identification procedure).

制御部22は、データ保存部6に保存されている現在時気圧値、補完した補完後の現在位置の海面気圧値、特定した補完後の気温を用い、上記した(1)の演算式により現在位置の標高を算出し(S54、標高算出手順)、現在位置の標高算出処理を終了し、ユーザ操作判定処理に復帰する。 The control unit 22 uses the current time atmospheric pressure value stored in the data storage unit 6, the sea level atmospheric pressure value at the current position after the supplement, and the specified air temperature after the supplement, and calculates the current by the arithmetic expression (1) described above. The altitude of the position is calculated (S54, altitude calculation procedure), the altitude calculation process of the current position is terminated, and the process returns to the user operation determination process.

以上に説明したように第2実施形態によれば、第1実施形態と同等の作用効果を得ることができ、携帯端末21において、様々な誤差要因を排除することで、標高を精度良く適切に算出することができる。又、携帯端末21において、駐車位置や現在位置の海面気圧値を時刻情報により補完するだけでなく、駐車位置や現在位置の気温も時刻情報により補完するようにした。補完後の気温を用いて標高を算出することで、駐車位置や現在位置から直近の気温を用いて標高を算出する場合よりも、標高を算出する精度を高めることができる。 As described above, according to the second embodiment, it is possible to obtain the same effect as that of the first embodiment, and by eliminating various error factors in the mobile terminal 21, it is possible to accurately and appropriately adjust the altitude. It can be calculated. Further, in the portable terminal 21, not only the sea level pressure value at the parking position or the current position is complemented by the time information, but also the temperature at the parking position or the current position is complemented by the time information. By calculating the altitude using the temperature after the supplementation, the accuracy of calculating the altitude can be increased as compared with the case where the altitude is calculated using the temperature closest to the parking position or the current position.

(その他の実施形態)
本開示は、実施例に準拠して記述されたが、当該実施例や構造に限定されるものではないと理解される。本開示は、様々な変形例や均等範囲内の変形をも包含する。加えて、様々な組み合わせや形態、更には、それらに一要素のみ、それ以上、或いはそれ以下を含む他の組み合わせや形態をも、本開示の範疇や思想範囲に入るものである。
(Other embodiments)
Although the present disclosure has been described with reference to exemplary embodiments, it is understood that the disclosure is not limited to those exemplary embodiments and structures. The present disclosure also includes various modifications and modifications within an equivalent range. In addition, various combinations and forms, and other combinations and forms including only one element, more, or less than them are also included in the scope and concept of the present disclosure.

携帯端末に適用する構成を例示したが、身体や衣服に装着した状態で利用するウェアラブル端末に適用しても良い。
現在位置から駐車位置までの標高差をユーザに通知する場合を例示したが、単に駐車位置や現在位置の標高をユーザに通知しても良い。
現在位置から駐車位置に向かう誘導方向を演算し、力覚を提示する力覚提示端末と連携し、誘導方向への力覚を力覚提示端末により提示することで、現在位置から駐車位置までユーザを誘導するシステムに適用しても良い。又、力覚を提示する機能を携帯端末が有する構成でも良い。
Although the configuration applied to the mobile terminal is illustrated, the present invention may be applied to a wearable terminal used while worn on the body or clothes.
Although the case of notifying the user of the altitude difference from the current position to the parking position has been illustrated, the user may simply be notified of the altitude at the parking position or the current position.
By calculating the guidance direction from the current position to the parking position and presenting the force sense with the force sense presentation terminal, and presenting the force sense in the guidance direction with the force sense presentation terminal, the user can move from the current position to the parking position. You may apply to the system which guide|guides. Further, the mobile terminal may have a function of presenting a force sense.

本開示に記載の制御部及びその手法は、コンピュータプログラムにより具体化された一つ乃至は複数の機能を実行するようにプログラムされたプロセッサ及びメモリを構成することにより提供された専用コンピュータにより実現されても良い。或いは、本開示に記載の制御部及びその手法は、一つ以上の専用ハードウエア論理回路によりプロセッサを構成することにより提供された専用コンピュータにより実現されても良い。若しくは、本開示に記載の制御部及びその手法は、一つ乃至は複数の機能を実行するようにプログラムされたプロセッサ及びメモリと一つ以上のハードウエア論理回路により構成されたプロセッサとの組み合わせにより構成された一つ以上の専用コンピュータにより実現されても良い。又、コンピュータプログラムは、コンピュータにより実行されるインストラクションとして、コンピュータ読み取り可能な非遷移有形記録媒体に記憶されていても良い。 The control unit and the method described in the present disclosure are realized by a dedicated computer provided by configuring a processor and a memory programmed to execute one or more functions embodied by a computer program. May be. Alternatively, the control unit and its method described in the present disclosure may be realized by a dedicated computer provided by configuring a processor with one or more dedicated hardware logic circuits. Alternatively, the control unit and the method thereof described in the present disclosure are based on a combination of a processor and a memory programmed to execute one or a plurality of functions and a processor configured by one or more hardware logic circuits. It may be realized by one or more dedicated computers configured. Further, the computer program may be stored in a computer-readable non-transition tangible recording medium as an instruction executed by the computer.

図面中、1,21は携帯端末(標高算出装置)、2,22は制御部、2aは時刻情報取得部、2bは位置情報取得部、2cは気圧値取得部、2dは気象観測点選択部、2eは海面気圧値取得部、2fは海面気圧値算出部、2gは海面気圧値補完部、2hは気温取得部、2i,22cは気温特定部、2jは標高算出部、22aは気温算出部、22bは気温補完部である。 In the drawing, 1 and 21 are mobile terminals (elevation calculation devices), 2 and 22 are control units, 2a is time information acquisition unit, 2b is position information acquisition unit, 2c is barometric pressure value acquisition unit, and 2d is weather observation point selection unit. 2e is a sea surface pressure value acquisition unit, 2f is a sea surface pressure value calculation unit, 2g is a sea surface pressure value complementing unit, 2h is an air temperature acquisition unit, 2i and 22c are air temperature specifying units, 2j is an altitude calculation unit, and 22a is an air temperature calculation unit. , 22b are temperature complementing units.

Claims (10)

所定時刻を示す時刻情報を取得する時刻情報取得部(2a)と、
所定位置を示す位置情報を取得する位置情報取得部(2b)と、
所定時刻での所定位置の気圧値を取得する気圧値取得部(2c)と、
前記位置情報取得部により取得された位置情報を用いて当該所定位置付近の気象観測点を複数選択する気象観測点選択部(2d)と、
前記気象観測点選択部により選択された複数の気象観測点で所定周期毎に観測された海面気圧値を気象観測サーバから取得する海面気圧値取得部(2e)と、
前記海面気圧値取得部により取得された複数の気象観測点毎の海面気圧値を用いて所定位置の海面気圧値を算出する海面気圧値算出部(2f)と、
前記海面気圧値算出部により算出された所定位置の海面気圧値を前記時刻情報取得部により取得された時刻情報により補完する海面気圧値補完部(2g)と、
前記気象観測点選択部により選択された複数の気象観測点で所定周期毎に観測された気温を気象観測サーバから取得する気温取得部(2h)と、
前記気温取得部により取得された複数の気象観測点毎の気温を用いて所定位置の気温を特定する気温特定部(2i,22c)と、
前記気圧値取得部により取得された所定位置の気圧値、前記海面気圧値補完部により補完された補完後の所定位置の海面気圧値、前記気温特定部により特定された所定位置の気温を用いて標高を算出する標高算出部(2j)と、を備える標高算出装置。
A time information acquisition unit (2a) for acquiring time information indicating a predetermined time,
A position information acquisition unit (2b) for acquiring position information indicating a predetermined position,
An atmospheric pressure value acquisition unit (2c) for acquiring an atmospheric pressure value at a predetermined position at a predetermined time,
A meteorological observation point selection unit (2d) that selects a plurality of meteorological observation points near the predetermined position using the position information acquired by the position information acquisition unit;
A sea level pressure value acquisition unit (2e) for acquiring from the weather observation server sea level pressure values observed at predetermined intervals at a plurality of weather observation points selected by the weather observation point selection unit;
A sea level pressure value calculation unit (2f) for calculating a sea level pressure value at a predetermined position using the sea level pressure value for each of a plurality of meteorological observation points acquired by the sea level pressure value acquisition unit;
A sea level pressure value complementing unit (2g) for complementing the sea level pressure value at the predetermined position calculated by the sea level pressure value calculating unit with the time information acquired by the time information acquiring unit;
A temperature acquisition unit (2h) for acquiring from the weather observation server the temperatures observed at predetermined intervals at a plurality of weather observation points selected by the weather observation point selection unit;
An air temperature identification unit (2i, 22c) that identifies the air temperature at a predetermined position using the air temperatures of the plurality of meteorological observation points acquired by the air temperature acquisition unit;
Using the atmospheric pressure value of the predetermined position acquired by the atmospheric pressure value acquisition unit, the sea level atmospheric pressure value of the predetermined position after being complemented by the sea level atmospheric pressure value complementing unit, and the temperature of the predetermined position specified by the temperature specifying unit An altitude calculation device comprising an altitude calculation unit (2j) for calculating an altitude.
前記海面気圧値補完部は、前記海面気圧値算出部により算出された所定位置の海面気圧値を前記時刻情報取得部により取得された時刻情報により内挿補完する請求項1に記載した標高算出装置。 The altitude calculation device according to claim 1, wherein the sea surface pressure value complementing unit interpolates and complements the sea surface pressure value at a predetermined position calculated by the sea surface pressure value calculating unit with the time information acquired by the time information acquiring unit. .. 前記海面気圧値補完部は、前記海面気圧値算出部により算出された所定位置の海面気圧値を前記時刻情報取得部により取得された時刻情報により外挿補完する請求項1に記載した標高算出装置。 The altitude calculation device according to claim 1, wherein the sea surface pressure value complementing unit extrapolates and complements the sea surface pressure value at a predetermined position calculated by the sea surface pressure value calculating unit, based on the time information acquired by the time information acquiring unit. .. 前記気温特定部(2i)は、前記気温取得部により取得された複数の気象観測点毎の気温のうち所定位置から直近の気象観測点の気温を特定する請求項1から3の何れか一項に記載した標高算出装置。 4. The air temperature identification unit (2i) identifies the temperature of a weather observation point closest to a predetermined position among the temperatures of each of the plurality of weather observation points acquired by the air temperature acquisition unit. Altitude calculation device described in. 前記気温取得部により取得された複数の気象観測点毎の気温を用いて所定位置の気温を算出する気温算出部(22a)と、
前記気温算出部により算出された所定位置の気温を前記時刻情報取得部により取得された時刻情報により補完する気温補完部(22b)と、を備え、
前記気温特定部(22c)は、前記気温補完部により補完された補完後の所定位置の気温を特定する請求項1から3の何れか一項に記載した標高算出装置。
An air temperature calculating unit (22a) that calculates the air temperature at a predetermined position using the air temperatures of the plurality of meteorological observation points acquired by the air temperature acquiring unit;
An air temperature complementing unit (22b) for complementing the air temperature at the predetermined position calculated by the air temperature calculating unit with the time information acquired by the time information acquiring unit,
The altitude calculation device according to any one of claims 1 to 3, wherein the air temperature identification unit (22c) identifies the air temperature at the predetermined position after the supplementation by the air temperature supplementation unit.
前記気温補完部は、前記気温算出部により算出された所定位置の気温を前記時刻情報取得部により取得された時刻情報により内挿補完する請求項5に記載した標高算出装置。 The altitude calculating device according to claim 5, wherein the temperature supplementing unit interpolates and supplements the temperature at the predetermined position calculated by the temperature calculating unit with the time information acquired by the time information acquiring unit. 前記気温補完部は、前記気温算出部により算出された所定位置の気温を前記時刻情報取得部により取得された時刻情報により外挿補完する請求項5に記載した標高算出装置。 The altitude calculating device according to claim 5, wherein the temperature complementing unit extrapolates and complements the temperature at the predetermined position calculated by the temperature calculating unit by using the time information acquired by the time information acquiring unit. 前記標高算出部は、複数位置の標高を算出し、その算出した複数位置の標高を用いて複数位置間の標高差を算出する請求項1から7の何れか一項に記載した標高算出装置。 The altitude calculation device according to any one of claims 1 to 7, wherein the altitude calculation unit calculates altitudes at a plurality of positions and calculates altitude differences between the plurality of positions by using the calculated altitudes at the plurality of positions. 前記標高算出部は、複数位置の標高として駐車位置の標高と現在位置の標高とを算出し、その算出した駐車位置の標高と現在位置の標高とを用いて現在位置から駐車位置までの標高差を算出する請求項8に記載した標高算出装置。 The altitude calculation unit calculates the altitude of the parking position and the altitude of the current position as the altitude of a plurality of positions, and the altitude difference from the current position to the parking position by using the calculated altitude of the parking position and the altitude of the current position. The altitude calculation device according to claim 8, wherein the altitude calculation device calculates. 標高算出装置(1)に、
所定時刻を示す時刻情報を取得する時刻情報取得手順と、
所定位置を示す位置情報を取得する位置情報取得手順と、
所定時刻での所定位置の気圧値を取得する気圧値取得手順と、
前記位置情報取得手順により取得した位置情報を用いて当該所定位置付近の気象観測点を複数選択する気象観測点選択手順と、
前記気象観測点選択手順により選択した複数の気象観測点で所定周期毎に観測された海面気圧値を気象観測サーバから取得する海面気圧値取得手順と、
前記海面気圧値取得手順により取得した複数の気象観測点毎の海面気圧値を用いて所定位置の海面気圧値を算出する海面気圧値算出手順と、
前記海面気圧値算出手順により算出した所定位置の海面気圧値を前記時刻情報取得手順により取得した時刻情報により補完する海面気圧値補完手順と、
前記気象観測点選択手順により選択した複数の気象観測点で所定周期毎に観測された気温を気象観測サーバから取得する気温取得手順と、
前記気温取得手順により取得した複数の気象観測点毎の気温を用いて所定位置の気温を特定する気温特定手順と、
前記気圧値取得手順により取得した所定位置の気圧値、前記海面気圧値補完手順により補完した補完後の所定位置の海面気圧値、前記気温特定手順により特定した所定位置の気温を用いて標高を算出する標高算出手順と、を実行させる標高算出プログラム。
In the altitude calculation device (1),
A time information acquisition procedure for acquiring time information indicating a predetermined time,
A position information acquisition procedure for acquiring position information indicating a predetermined position,
An atmospheric pressure value acquisition procedure for acquiring the atmospheric pressure value at a predetermined position at a predetermined time,
A meteorological observation point selection procedure for selecting a plurality of meteorological observation points near the predetermined position using the position information acquired by the position information acquisition procedure,
A sea level atmospheric pressure value acquisition procedure for acquiring a sea level atmospheric pressure value observed at a predetermined cycle at a plurality of meteorological observation points selected by the meteorological observation point selection procedure from a meteorological observation server,
A sea level pressure calculation procedure for calculating a sea level pressure value at a predetermined position using the sea level pressure value for each of a plurality of meteorological observation points acquired by the sea level pressure value acquisition procedure,
A sea level pressure value complementing procedure for complementing the sea level pressure value at the predetermined position calculated by the sea level pressure value calculation procedure with the time information acquired by the time information acquisition procedure,
A temperature acquisition procedure for acquiring from the weather observation server the temperatures observed at predetermined intervals at a plurality of weather observation points selected by the weather observation point selection procedure,
An air temperature specifying procedure for specifying the air temperature at a predetermined position by using the air temperature of each of a plurality of meteorological observation points acquired by the air temperature acquiring procedure,
Elevation is calculated using the atmospheric pressure value at the predetermined position acquired by the atmospheric pressure value acquisition procedure, the sea level atmospheric pressure value at the predetermined position after the supplementation performed by the sea level atmospheric pressure value supplementation procedure, and the air temperature at the predetermined position identified by the temperature identification procedure. And an altitude calculation program for executing the altitude calculation procedure.
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