JPH04235373A - Car navigation system with radio direction finder - Google Patents

Car navigation system with radio direction finder

Info

Publication number
JPH04235373A
JPH04235373A JP187891A JP187891A JPH04235373A JP H04235373 A JPH04235373 A JP H04235373A JP 187891 A JP187891 A JP 187891A JP 187891 A JP187891 A JP 187891A JP H04235373 A JPH04235373 A JP H04235373A
Authority
JP
Japan
Prior art keywords
vehicle
signals
information
moving vehicle
transmitters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP187891A
Other languages
Japanese (ja)
Inventor
Nobuyuki Tanaka
信行 田中
Kazuhiko Nakamura
和彦 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Engineering Ltd
Original Assignee
NEC Engineering Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Engineering Ltd filed Critical NEC Engineering Ltd
Priority to JP187891A priority Critical patent/JPH04235373A/en
Publication of JPH04235373A publication Critical patent/JPH04235373A/en
Pending legal-status Critical Current

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  • Navigation (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

PURPOSE:To dispense with adjustment of a sensor of each vehicle and to enable acquisition of navigation information on a moving vehicle with ease and with high precision by a method wherein output signals from a plurality of transmitters disposed on towers are received on the moving vehicle. CONSTITUTION:A plurality of transmitters 3 provided on pylons or poles output signals of frequencies being predetermined and different from one another. A computing element 7 recognizes positions of the pylons 1 in a plurality wherefrom the signals 11 are emitted, from the signals received by a vehicle-borne receiver 6, and the analysis of directions is conducted by a radio direction finding method comprising rotation of an antenna 5 for reception, employment of two antennas 5 for reception, etc. By using information on the coming directions of the signals 11 and the disposition of the pylons 1 stored beforehand in a storage element 9, moreover, moreover, data on the position, the direction of advance, the speed, etc., of a moving vehicle 2, which are necessary for navigation, are calculated and the results are displayed in a display element 8. According to this constitution, adjustment of a sensor of each vehicle is dispensed with and navigation information on the moving vehicle can be obtained with ease and with high precision.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明はカーナビゲーションシス
テムに関し、特に複数個の柱上送信機からの信号によっ
て自己車両の位置,進行方向,速度等を算出する機能を
有するカーナビゲーションシステムに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car navigation system, and more particularly to a car navigation system having a function of calculating the position, traveling direction, speed, etc. of a vehicle based on signals from a plurality of pole transmitters.

【0002】0002

【従来の技術】従来、この種のカーナビゲーションシス
テムとしては、地磁気センサ,ハンドル角センサ等によ
って移動する自己車両の位置,進行方向等を検出するシ
ステムがあった。
2. Description of the Related Art Conventionally, as a car navigation system of this type, there has been a system that detects the position, traveling direction, etc. of a moving vehicle using a geomagnetic sensor, a steering wheel angle sensor, etc.

【0003】又、人工衛星からの電波によって自己の位
置を計算する方法もある。
[0003] There is also a method of calculating one's own position using radio waves from an artificial satellite.

【0004】0004

【発明が解決しようとする課題】上述した従来のカーナ
ビゲーションシステムには、以下に述べるような欠点が
あった。
[Problems to be Solved by the Invention] The conventional car navigation system described above has the following drawbacks.

【0005】地磁気センサ,ハンドル角センサ等による
システムは、これらのセンサによって、移動車両の移動
量を検知し、これを移動前の位置に足して現在位置を推
定している。しかしこの方法では各センサの精度がその
ままシステムの測定精度になってしまうため、車両に合
わせてセンサの調整を行う必要があった。特に車両の車
輪の回転によって速度を知る車速センサにおいては、タ
イヤの交換によって測定量が変わってしまう欠点がある
A system using a geomagnetic sensor, a steering wheel angle sensor, etc. uses these sensors to detect the amount of movement of a moving vehicle, and adds this to the position before movement to estimate the current position. However, with this method, the accuracy of each sensor directly affects the measurement accuracy of the system, so it was necessary to adjust the sensors to suit the vehicle. In particular, a vehicle speed sensor that measures the speed based on the rotation of the vehicle's wheels has the disadvantage that the measured amount changes when tires are replaced.

【0006】一方、人工衛星からの電波により自己車両
の位置を計算する方法は、測定制度の点に問題があり、
現在の技術水準における衛星測位法の測定精度は100
m程度である。数100mの誤差は、砂漠や海上等、場
所によっては十分実用になる精度といえるが、市街地に
おけるカーナビゲーショシステムとしては不十分である
On the other hand, the method of calculating the vehicle's position using radio waves from artificial satellites has a problem with measurement accuracy;
The measurement accuracy of satellite positioning at the current technological level is 100
It is about m. An error of several hundred meters can be said to be accurate enough for practical use in some places, such as in the desert or on the sea, but it is insufficient for a car navigation system in urban areas.

【0007】[0007]

【課題を解決するための手段】本発明の無線方位測定式
カーナビゲーションシステムは、複数の塔には、予め定
められたそれぞれ異なる周波数の信号を出力する送信機
と、前記送信機から出力された信号を放射する送信用空
中線とが配置され、車両には、複数の前記送信用空中線
から放射された信号を受信する受信用空中線と、前記受
信用空中線からの前記複数の信号を受信する車載受信機
と、前記車載受信機が受信した信号からそれらの信号を
放射した送信用空中線が配置されている複数の塔の方向
を分析した塔方向測定情報と塔の配置情報から前記車両
に対するナビゲーション情報を算出する計算機部と、前
記ナビゲーション情報及び地図情報を表示する手段を有
するディスプレイ部と、前記塔の配置情報および前記地
図情報を記憶する記憶部と、前記車両に搭載されている
各部を制御する操作部とを有している。
[Means for Solving the Problems] The radio direction-finding car navigation system of the present invention includes a plurality of towers each having a transmitter that outputs a predetermined signal of a different frequency, and a transmitter that outputs a signal of a different predetermined frequency. A transmitting antenna that emits signals is arranged, and the vehicle includes a receiving antenna that receives signals emitted from the plurality of transmitting antennas, and an on-vehicle receiver that receives the plurality of signals from the receiving antenna. Navigation information for the vehicle is obtained from the tower direction measurement information and tower arrangement information obtained by analyzing the directions of the aircraft and a plurality of towers in which transmitting antennas that emit signals from the signals received by the vehicle-mounted receiver are arranged. a computer section for calculating, a display section having means for displaying the navigation information and the map information, a storage section for storing the tower arrangement information and the map information, and an operation for controlling each section mounted on the vehicle. It has a section.

【0008】[0008]

【実施例】次に、本発明について図面を参照して説明す
る。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

【0009】図1は、本発明の一実施例の構成図である
FIG. 1 is a block diagram of an embodiment of the present invention.

【0010】塔1は、従来から商用電力送電線用として
ほぼ一定間隔に立てられている鉄塔または電柱等が利用
できる。塔1には、電波,放射電界等を用いて放射され
る信号11を出力する、送信機3及び送信用空中線4が
配置されている。
The towers 1 can be steel towers or utility poles that have been erected at approximately regular intervals for commercial power transmission lines. A transmitter 3 and a transmitting antenna 4 are disposed on the tower 1 and output a signal 11 radiated using radio waves, a radiated electric field, or the like.

【0011】一方、移動車両2には、複数の送信用空中
線4から放射された信号11を受信する受信用空中線5
,受信用空中線5からの信号を受信する車載受信機6,
車載受信機6が受信した信号からそれらの信号を出力し
た複数の送信機3の方向を分析し、移動車両2の位置,
進行方向,速度等のナビゲーションデータを算出する計
算機部7と、算出したデータ及び地図情報を表示する手
段を有するディスプレイ部8と、予め、地図情報及び塔
1の配置情報を記憶する記憶部9と、移動車両2に設け
られている前出の各部を制御する操作部10とを有して
いる。
On the other hand, the moving vehicle 2 includes a receiving antenna 5 that receives signals 11 radiated from a plurality of transmitting antennas 4.
, an on-vehicle receiver 6 that receives signals from the receiving antenna 5,
From the signals received by the on-vehicle receiver 6, the directions of the plurality of transmitters 3 that output those signals are analyzed, and the position of the moving vehicle 2,
A computer section 7 that calculates navigation data such as traveling direction and speed, a display section 8 that has means for displaying the calculated data and map information, and a storage section 9 that stores map information and location information of the tower 1 in advance. , and an operation section 10 that controls each of the above-mentioned sections provided in the moving vehicle 2.

【0012】ここで、複数の送信機3は、それぞれ異な
り予め定められている周波数の信号を出力している。計
算機部7は、車載受信機6によって受信された信号から
信号11が放射された複数の塔3の位置を知り(方向の
分析は、受信用空中線5の回転,2個の受信用空中線5
の使用等、公知の無線方位測定方法によって実現できる
)、更に信号11の来る方向と予め記憶部9に記憶され
ている塔1の配置情報を用いて自己の移動車両2の位置
,進行方向,速度等のナビゲーションのために必要なデ
ータを算出し、その結果をディスプレイ部8に表示する
[0012] Here, the plurality of transmitters 3 output signals of different predetermined frequencies. The computer section 7 learns the positions of the plurality of towers 3 from which the signal 11 was emitted from the signal received by the on-vehicle receiver 6 (the direction analysis is based on the rotation of the receiving antenna 5, the rotation of the two receiving antennas 5,
(This can be realized by a known wireless direction measurement method such as the use of Data necessary for navigation such as speed is calculated and the results are displayed on the display section 8.

【0013】又、算出されたデータから付近の地図を記
憶部9から読み出し、ディスプレイ部8に表示すること
もできる。
Furthermore, a nearby map can be read out from the storage section 9 from the calculated data and displayed on the display section 8.

【0014】従って本実施例によって、移動車両2がど
こに移動しても、カーナビゲーションのために必要な情
報を常にディスプレイ部8に表示することが可能である
Therefore, according to this embodiment, it is possible to always display information necessary for car navigation on the display section 8, no matter where the moving vehicle 2 moves.

【0015】[0015]

【発明の効果】以上説明したように本発明は、従来から
設置されている商用電力線の鉄塔または電柱のような塔
に配置した複数の送信機から出力された信号を、移動車
両において受信することにより、常に必要なナビゲーシ
ョン情報をディスプレイ部に表示することができる。
[Effects of the Invention] As explained above, the present invention enables a moving vehicle to receive signals output from a plurality of transmitters placed on conventionally installed towers such as commercial power line towers or utility poles. This allows necessary navigation information to be displayed on the display unit at all times.

【0016】その結果、各車両ごとにセンサの調整の必
要なく、容易かつ高精度の、移動車両の位置,進行方向
,速度等のナビゲーション情報を得ることができる効果
がある。
As a result, there is an effect that navigation information such as the position, direction of travel, speed, etc. of a moving vehicle can be obtained easily and with high precision without the need to adjust the sensor for each vehicle.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】本発明の一実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1    塔 2    移動車両 3    送信機 4    送信用空中線 5    受信用空中線 6    車載受信機 7    計算機部 8    ディスプレイ部 9    記憶部 10    操作部 11    信号 1 Tower 2. Moving vehicle 3 Transmitter 4 Transmission antenna 5 Receiving antenna 6 In-vehicle receiver 7. Computer section 8 Display section 9. Storage section 10    Operation section 11 Signal

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  複数の塔には、予め定められたそれぞ
れ異なる周波数の信号を出力する送信機と、前記送信機
から出力された信号を放射する送信用空中線とが配置さ
れ、車両には、複数の前記送信用空中線から放射された
信号を受信する受信用空中線と、前記受信用空中線から
の前記複数の信号を受信する車載受信機と、前記車載受
信機が受信した信号からそれらの信号を放射した送信用
空中線が配置されている複数の塔の方向を分析した塔方
向測定情報と塔の配置情報から前記車両に対するナビゲ
ーション情報を算出する計算機部と、前記ナビゲーショ
ン情報及び地図情報を表示する手段を有するディスプレ
イ部と、前記塔の配置情報および前記地図情報を記憶す
る記憶部と、前記車両に搭載されている各部を制御する
操作部とを有することを特徴とする無線方位測定式カー
ナビゲーションシステム。
Claim 1: A plurality of towers are provided with transmitters that output signals of different predetermined frequencies, and transmitting antennas that radiate the signals output from the transmitters, and the vehicle includes: a receiving antenna that receives signals radiated from the plurality of transmitting antennas; a vehicle-mounted receiver that receives the plurality of signals from the receiving antenna; and a vehicle-mounted receiver that receives the signals from the signals received by the vehicle-mounted receiver. a computer unit that calculates navigation information for the vehicle from tower direction measurement information and tower arrangement information obtained by analyzing directions of a plurality of towers in which emitted transmitting antennas are arranged; and means for displaying the navigation information and map information. A wireless azimuth-measuring car navigation system comprising: a display section having a display section; a storage section that stores the tower arrangement information and the map information; and an operation section that controls each section mounted on the vehicle. .
JP187891A 1991-01-11 1991-01-11 Car navigation system with radio direction finder Pending JPH04235373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP187891A JPH04235373A (en) 1991-01-11 1991-01-11 Car navigation system with radio direction finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP187891A JPH04235373A (en) 1991-01-11 1991-01-11 Car navigation system with radio direction finder

Publications (1)

Publication Number Publication Date
JPH04235373A true JPH04235373A (en) 1992-08-24

Family

ID=11513820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP187891A Pending JPH04235373A (en) 1991-01-11 1991-01-11 Car navigation system with radio direction finder

Country Status (1)

Country Link
JP (1) JPH04235373A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005050246A1 (en) * 2003-11-18 2005-06-02 Mitsubishi Denki Kabushiki Kaisha Positioning system
JP2014153117A (en) * 2013-02-06 2014-08-25 Chugoku Electric Power Co Inc:The System and method for obtaining information indicating direction of mobile object

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005050246A1 (en) * 2003-11-18 2005-06-02 Mitsubishi Denki Kabushiki Kaisha Positioning system
JP2014153117A (en) * 2013-02-06 2014-08-25 Chugoku Electric Power Co Inc:The System and method for obtaining information indicating direction of mobile object

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