JPH0488727A - Receiver for travelling object - Google Patents
Receiver for travelling objectInfo
- Publication number
- JPH0488727A JPH0488727A JP20337790A JP20337790A JPH0488727A JP H0488727 A JPH0488727 A JP H0488727A JP 20337790 A JP20337790 A JP 20337790A JP 20337790 A JP20337790 A JP 20337790A JP H0488727 A JPH0488727 A JP H0488727A
- Authority
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- Japan
- Prior art keywords
- antenna
- current position
- section
- unit
- position detection
- 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
Links
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000003321 amplification Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は移動体用受信装置に関する。[Detailed description of the invention] (b) Industrial application field The present invention relates to a mobile receiving device.
（ロ）従来の技術
従来、移動体用受信装置としては、例えば第４図に示す
構成のものが知られている。(b) Prior Art Conventionally, as a receiving apparatus for a mobile object, one having the configuration shown in FIG. 4, for example, is known.
第４図において、（１）はアンテナ、（２）はアンテナ
（１）にて受信された高周波信号を受信・復調する受信
部で、高周波信号を増幅する高周波増幅回路（３）と、
高周波増幅回路（３）からの高周波信号とＰＬＬにて構
成された局部発振回路（４）からの発振信号とに基づき
所定の中間周波信号を導出する周波数変換回路（５）と
、この周波数変換回路（５）からの信号を増幅する中間
周波増幅回路（６）と、中間周波信号を検波する検波回
路（７）と、検波回路（７）からの出力信号を増幅する
低周波増幅回路（８）と、この低周波増幅回路（８）の
出力にて駆動されるスピーカ（９）と、前記ＰＬＬに制
御データを供給するマイクロコンピュータにて構成され
ｔ：制御回路（１０）とより構成されている。In FIG. 4, (1) is an antenna, (2) is a receiving section that receives and demodulates the high frequency signal received by the antenna (1), and a high frequency amplification circuit (3) that amplifies the high frequency signal;
A frequency conversion circuit (5) that derives a predetermined intermediate frequency signal based on a high frequency signal from a high frequency amplifier circuit (3) and an oscillation signal from a local oscillation circuit (4) configured with a PLL, and this frequency conversion circuit. An intermediate frequency amplification circuit (6) that amplifies the signal from (5), a detection circuit (7) that detects the intermediate frequency signal, and a low frequency amplification circuit (8) that amplifies the output signal from the detection circuit (7). , a speaker (9) driven by the output of this low frequency amplification circuit (8), and a control circuit (10) consisting of a microcomputer that supplies control data to the PLL. .
（ハ）発明が解決しようとする課題
移動体用受信装置では、直接波と反射波との干渉による
マルチパス妨害の影響を受けることが知られている。(c) Problems to be Solved by the Invention It is known that receiving devices for mobile objects are affected by multipath interference due to interference between direct waves and reflected waves.
従来、斯るマルチパス妨害の対策としては、受信電界強
度に応じてＦＭステレオ復調回路での分離度を低下させ
る方法や、指向性を有するアンテナを複数本設け、各ア
ンテナの受信レベルを検出して、最高レベルを呈するア
ンテナを選択する、所謂ダイパーシティ受信が採用され
ているが、未だ不十分であった。Conventionally, countermeasures against such multipath interference include reducing the degree of separation in the FM stereo demodulation circuit according to the received field strength, or installing multiple directional antennas and detecting the reception level of each antenna. So-called diversity reception, in which the antenna exhibiting the highest level is selected, has been adopted, but it is still insufficient.
（ニ）課題を解決するための手段
上記の点に鑑み、本発明は指向性を有するアンテナと、
このアンテナを駆動させるアンテナ駆動部と、前記アン
テナにて受信された高周波信号を受信・復調する受信部
と、移動体の現在位置を検出する現在位置検出部と、放
送局の局名、放送周波数、所在地を記憶する記憶部と、
受信時、前記記憶部からの受信放送局に関連する所在地
データと現在位置検出部からの現在位置データとから前
記アンテナの最適向きを算出し、前記アンテナ駆動部に
制御信号を供給するアンテナ方向算出部とよりなること
を特徴とする。(d) Means for Solving the Problems In view of the above points, the present invention provides a directional antenna,
An antenna drive unit that drives this antenna, a reception unit that receives and demodulates the high frequency signal received by the antenna, a current position detection unit that detects the current position of the mobile object, and the station name and broadcast frequency of the broadcasting station. , a storage unit that stores the location;
At the time of reception, calculating the optimum orientation of the antenna from the location data related to the received broadcasting station from the storage unit and the current position data from the current position detection unit, and calculating the antenna direction to supply a control signal to the antenna driving unit. It is characterized by having more than one part.
また、おのおの異なる指向性を有する複数のアンテナと
、このアンテナにて受信された高周波信号を受信・復調
する受信部と、移動体の現在位置を検出する現在位置検
出部と、放送局の局名、放送周波数、所在地を記憶する
記憶部と、受信時、前屈記憶部からの受信放送局に関連
する所在地データと現在位置検出部からの現在位置デー
タとから前記複数のアンテナのうち、最適なアンテナを
選択する制御信号を供給するアンテナ選択部とよりなる
ことを特徴とする。It also includes a plurality of antennas each having different directivity, a receiving unit that receives and demodulates high-frequency signals received by the antennas, a current position detecting unit that detects the current position of a mobile object, and a station name of a broadcasting station. , a storage unit that stores broadcast frequencies and locations, and, at the time of reception, selects the optimal antenna among the plurality of antennas from the location data related to the received broadcasting station from the forward bending storage unit and the current position data from the current position detection unit. It is characterized by comprising an antenna selection section that supplies a control signal for selecting an antenna.
（ホ）作用
本発明によれば、受信放送局の所在地データと現在位置
データとから最適のアンテナ方向へ駆動若しくはアンテ
ナが複数ある場合には、最適なアンテナを選択する。(E) Function According to the present invention, the optimum antenna is driven in the direction of the optimum antenna based on the location data and the current position data of the received broadcasting station, or the optimum antenna is selected when there are a plurality of antennas.
（へ）実施例
第１図は、本発明の第１実施例を示すブロック図である
。第１図において、（１１）は指向性を有するアンテナ
、（１２）はアンテナ（１１）を駆動させるためのアン
テナ駆動部で、後述する制御信号（デジタル信号）をア
ナログ信号に変換するデジタル／アナログ変換器（１３
）と、このデジタル／アナログ変換器（１３）からのア
ナログ信号が供給される比較器（１４）と、この比較！
（１４）からの出力信号にて駆動されるサーボモータ（
１５）と、アンテナ（１１）の回転角に対応する電圧を
発生し、この電圧を比較器に基準電圧として供給する電
圧発生部（１６）とより構成されてる。（１７）はアン
テナ（１１）からの高周波信号を受信・復調する受信部
で、高周波増幅回路（１８）と、ＰＬＬで構成された局
部発振回路（１９）と、周波数変換回路（２０）と、中
間周波数増幅回路（２１）と、検波回路（２２）と、低
周波増幅回路（２３）とを含んでいる。（２４）は第２
図に示すごとく放送局の局名、放送周波数、放送局の所
在地を記憶する記憶部、（２５）は移動体の現在位置を
検出する現在位置検出部で、例えば衛星からの電波に基
づき現在位置を検出する、所謂ＧＰＳ受信装置である。(F) Embodiment FIG. 1 is a block diagram showing a first embodiment of the present invention. In Fig. 1, (11) is an antenna with directivity, and (12) is an antenna drive unit for driving the antenna (11), which is a digital/analog signal that converts a control signal (digital signal) to be described later into an analog signal. Converter (13
), a comparator (14) to which the analog signal from this digital/analog converter (13) is supplied, and this comparison!
(14) A servo motor (
15), and a voltage generator (16) that generates a voltage corresponding to the rotation angle of the antenna (11) and supplies this voltage to the comparator as a reference voltage. (17) is a receiving unit that receives and demodulates the high frequency signal from the antenna (11), which includes a high frequency amplifier circuit (18), a local oscillation circuit (19) composed of a PLL, a frequency conversion circuit (20), It includes an intermediate frequency amplification circuit (21), a detection circuit (22), and a low frequency amplification circuit (23). (24) is the second
As shown in the figure, there is a storage unit that stores the station name, broadcasting frequency, and location of the broadcasting station, and (25) is a current position detection unit that detects the current position of the mobile object. For example, the current position is based on radio waves from a satellite. This is a so-called GPS receiving device that detects.
（２６）は選局時に操作される操作キー、（２７）は表
示部、（２８）はマイクロコンピュータにて構成された
制御部で、プログラムが格納されたＲ ＯＭ （２９）
と、データを一時的に格納するためのＲＡＭ（３０）と
、ＣＰ Ｕ （３１）とを含んでいる。なお、制御部（
２８）は現在位置検出部（２５）からの現在位置データ
と記憶部（２４）からの所在地データとに基づきアンテ
ナ（１１）の最適向きを算出するようになされており、
アンテナ方向算出部を構成している。(26) is the operation key operated when selecting a channel, (27) is the display unit, (28) is the control unit composed of a microcomputer, and ROM (29) in which the program is stored.
, a RAM (30) for temporarily storing data, and a CPU (31). In addition, the control unit (
28) is configured to calculate the optimum orientation of the antenna (11) based on the current position data from the current position detection unit (25) and the location data from the storage unit (24),
It constitutes an antenna direction calculation section.
次に動作について 讐キぐ説明する。Next, about the operation Explain the enemy.
今、電源が投入されると、制御部（２８）は、まず現在
位置検出部（２５）からの現在位置データに基づき記憶
部（２４）をアクセスして、現在の位置において受信可
能な放送局を抽出し、表示部（２７）に表示する。Now, when the power is turned on, the control unit (28) first accesses the storage unit (24) based on the current position data from the current position detection unit (25), and searches for broadcast stations that can be received at the current position. is extracted and displayed on the display section (27).
斯る状態において、使用者が表示された放送局のうち、
所望の放送局からの放送を受信するために、操作キー（
２６）を操作すると、当該放送局に対応する周波数デー
タがＰＬＬ（局部発振回路）に供給され、受信部（１７
）が当該放送を受信する状態に設定される。In such a situation, among the broadcast stations where the user is displayed,
To receive broadcasts from the desired broadcast station, press the operation keys (
26), the frequency data corresponding to the broadcast station is supplied to the PLL (local oscillator circuit), and the receiving section (17) is operated.
) is set to receive the broadcast.
制御部（２８）は、同時に現在位置検出部（２５）から
の現在位置データ並びに移動方向と前記放送局の所在地
データとに基づきアンテナ（１１）の向き（移動角：θ
、）を算出する。The control unit (28) simultaneously determines the direction (movement angle: θ) of the antenna (11) based on the current position data from the current position detection unit (25), the movement direction, and the location data of the broadcast station
, ) is calculated.
この算出された移動角θｌ（デジタル値）は、アンテナ
駆動部（１２）に供給され、デジタル／アナログ変換器
（１３）でアナログ信号に変換された後、現在のアンテ
ナ移動角を示す電圧と比較部（１４）にて比較される。This calculated movement angle θl (digital value) is supplied to the antenna drive unit (12), converted into an analog signal by the digital/analog converter (13), and then compared with a voltage indicating the current antenna movement angle. A comparison is made in section (14).
比較部（１４）は、両型圧の差電圧を出力に生じ、この
差電圧にてサーボモータ（１５）が駆動され、以ってア
ンテナ（１１）が駆動される。The comparator (14) outputs a voltage difference between the two types of pressures, and this voltage difference drives the servo motor (15), thereby driving the antenna (11).
ところで、電圧発生部（１６）から供給される電圧値と
デジタル／アナログ変換器（１３）からのアナログ信号
の値が一致したとき、比較器（１４）の出力が零となり
、サーボモータ（１５）の駆動が停止する。By the way, when the voltage value supplied from the voltage generator (16) and the value of the analog signal from the digital/analog converter (13) match, the output of the comparator (14) becomes zero, and the servo motor (15) The drive stops.
斯くして、アンテナ（１１）が最適の方向に設定される
。The antenna (11) is thus set in the optimum direction.
第３図は本発明の第２実施例を示す図で、各々異なる指
向性を有する複数のアンテナ（３２）（３３）（３４）
を設け、現在位置検出部（２５）からの現在位置データ
並びに移動方向と記憶部（２４）から抽出された放送局
の所在地データとから制御部（２８）にて所望のアンテ
ナを算出し、アンテナ切換部（３５）に選択信号を供給
するようにしたものである。FIG. 3 is a diagram showing a second embodiment of the present invention, in which a plurality of antennas (32), (33), and (34) each having a different directivity are used.
The control unit (28) calculates the desired antenna from the current position data from the current position detection unit (25), the moving direction, and the location data of the broadcasting station extracted from the storage unit (24), and selects the antenna. A selection signal is supplied to the switching section (35).
この場合、制御部がアンテナ選択部となる。他の部分に
ついては第１図と同一であるので、説明を省略する。In this case, the control section becomes the antenna selection section. Since the other parts are the same as those in FIG. 1, their explanation will be omitted.
（ト）発明の効果
本発明によれば、移動体の現在位置と受信する放送局の
所在地とから最適な方向にアンテナを駆動するか若しく
は複数のアンテナの中から最適なアンテナを選択するよ
うにしたので、マルチパス妨害を軽減することができる
。(G) Effects of the Invention According to the present invention, the antenna is driven in the optimum direction based on the current position of the mobile object and the location of the broadcasting station to be received, or the optimum antenna is selected from among a plurality of antennas. Therefore, multipath interference can be reduced.
第１図は本発明の第１実施例を示す図、第２図は記憶部
に記憶されるデータ例を示す図、第３図は本発明の第２
実施例を示す図、第４図は従来例を示す図である。
（１１）（３２）（３３）（３４）・・・アンテナ、（
１２）・・・アンテナ駆動部、（１７）・・・受信部、
（２４）・・・記憶部、（２５）・・・現在位置検出部
、（２６）・・・操作キー、（２７）・・・表示部、（
２８）・・・制御部、（３５）・・・アンテナ切換部。FIG. 1 is a diagram showing a first embodiment of the present invention, FIG. 2 is a diagram showing an example of data stored in a storage section, and FIG. 3 is a diagram showing a second embodiment of the present invention.
FIG. 4 is a diagram showing a conventional example. (11) (32) (33) (34)... Antenna, (
12)... Antenna driving section, (17)... Receiving section,
(24)...Storage unit, (25)...Current position detection unit, (26)...Operation keys, (27)...Display unit, (
28)...Control unit, (35)...Antenna switching unit.
Claims (2)
するアンテナ駆動部と、前記アンテナにて受信された高
周波信号を受信・復調する受信部と、移動体の現在位置
を検出する現在位置検出部と、放送局の局名、放送周波
数、所在地を記憶する記憶部と、受信時、前記記憶部か
らの受信放送局に関連する所在地データと現在位置検出
部からの現在位置データとから前記アンテナの最適な向
きを算出し、前記アンテナ駆動部に制御信号を供給する
アンテナ方向算出部とよりなる移動体用受信装置。(1) An antenna with directivity, an antenna driving section that drives the antenna, a receiving section that receives and demodulates the high frequency signal received by the antenna, and a current position detection section that detects the current position of the moving object. and a storage unit that stores the station name, broadcast frequency, and location of the broadcasting station, and at the time of reception, the location data of the antenna is determined from the location data related to the received broadcasting station from the storage unit and the current position data from the current position detection unit. A receiving device for a mobile body, comprising an antenna direction calculation unit that calculates an optimal orientation and supplies a control signal to the antenna drive unit.
、このアンテナにて受信された高周波信号を受信・復調
する受信部と、移動体の現在位置を検出する現在位置検
出部と、放送局の局名、放送周波数、所在地を記憶する
記憶部と、受信時、前記記憶部からの受信放送局に関連
する所在地データと現在位置検出部からの現在位置デー
タとから前記複数のアンテナのうち、最適なアンテナを
選択する制御信号を供給するアンテナ選択部とよりなる
移動体用受信装置。(2) A plurality of antennas each having different directivity, a receiving unit that receives and demodulates the high frequency signal received by the antenna, a current position detection unit that detects the current position of a mobile object, and a broadcasting station. a storage unit that stores names, broadcast frequencies, and locations; and upon reception, selects the most suitable antenna among the plurality of antennas from the location data related to the received broadcasting station from the storage unit and the current position data from the current position detection unit. A receiving device for a mobile body comprising an antenna selection section that supplies a control signal for selecting an antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20337790A JPH0488727A (en) | 1990-07-31 | 1990-07-31 | Receiver for travelling object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20337790A JPH0488727A (en) | 1990-07-31 | 1990-07-31 | Receiver for travelling object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0488727A true JPH0488727A (en) | 1992-03-23 |
Family
ID=16473029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20337790A Pending JPH0488727A (en) | 1990-07-31 | 1990-07-31 | Receiver for travelling object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0488727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548836A (en) * | 1993-07-27 | 1996-08-20 | Matsushita Electric Industrial Co., Ltd. | Diversity receiver |
| EP1788406A1 (en) * | 2005-10-29 | 2007-05-23 | Hirschmann Car Communication GmbH | GPS supported radiation diagram use at the reception of high frequency signals in a vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5343828B2 (en) * | 1974-11-19 | 1978-11-22 | ||
| JPS61218230A (en) * | 1985-03-25 | 1986-09-27 | Toshiba Corp | Satellite broadcast transmission and reception system |
| JPH02107983A (en) * | 1988-10-17 | 1990-04-19 | Hitachi Ltd | Antenna satellite acquisition method |
-
1990
- 1990-07-31 JP JP20337790A patent/JPH0488727A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5343828B2 (en) * | 1974-11-19 | 1978-11-22 | ||
| JPS61218230A (en) * | 1985-03-25 | 1986-09-27 | Toshiba Corp | Satellite broadcast transmission and reception system |
| JPH02107983A (en) * | 1988-10-17 | 1990-04-19 | Hitachi Ltd | Antenna satellite acquisition method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548836A (en) * | 1993-07-27 | 1996-08-20 | Matsushita Electric Industrial Co., Ltd. | Diversity receiver |
| EP1788406A1 (en) * | 2005-10-29 | 2007-05-23 | Hirschmann Car Communication GmbH | GPS supported radiation diagram use at the reception of high frequency signals in a vehicle |
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