JPS6184565A - Detecting method of electric field intensity - Google Patents
Detecting method of electric field intensityInfo
- Publication number
- JPS6184565A JPS6184565A JP20654184A JP20654184A JPS6184565A JP S6184565 A JPS6184565 A JP S6184565A JP 20654184 A JP20654184 A JP 20654184A JP 20654184 A JP20654184 A JP 20654184A JP S6184565 A JPS6184565 A JP S6184565A
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- voltage
- received electric
- intensity
- received
- 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
Landscapes
- Stereo-Broadcasting Methods (AREA)
Abstract
Description
【発明の詳細な説明】
イ、産業上の利用分野
本発明は、ＦＭ放送受信などの際に、最大受信感度を得
るために、受信アンテナの方向、アンテナ設置位置の選
定などのために用いる電界強度検知方法に関する。Detailed Description of the Invention A. Field of Industrial Application The present invention provides an electric field that is used to select the direction of the receiving antenna, the antenna installation position, etc. in order to obtain the maximum receiving sensitivity when receiving FM broadcasting. Related to intensity detection method.
口、従来の技術
従来、受信電界強度はアナログメータまたはデジタル表
示のメータにより表示されておった。そして、この測定
値を便りに、例えば、ＦＭ受信アンテナの方向ｔ−調Ｕ
するとき、その都度セットの方に行って、目視により電
界強度を確めながら、最大受信方向を選ばなければなら
なかった。BACKGROUND OF THE INVENTION Conventionally, received electric field strength has been indicated by an analog meter or a digital display meter. Then, based on this measurement value, for example, the direction t-key U of the FM receiving antenna is determined.
Each time, I had to go to the set and visually check the electric field strength and select the direction of maximum reception.
ハ１発明が解決しようとする問題点
上述のように、従来の電界強度検知方法では、アンテナ
の方向を変えながら、その都度メータの指示目盛を確認
し、最大感度方向を知るということは非常に不便であっ
た。C1 Problems to be Solved by the Invention As mentioned above, in the conventional electric field strength detection method, it is very difficult to know the direction of maximum sensitivity by checking the indication scale of the meter each time while changing the direction of the antenna. It was inconvenient.
二４問題点を解決するための手段
上記の問題点に対し、本発明では、受信電界強度に対応
する出力を、可聴音の同波数変化に変えて、その出力音
の音調により、前記電界強度を検知する。24 Means for Solving the Problems In order to solve the above problems, in the present invention, the output corresponding to the received electric field strength is changed to the same wave number change of an audible sound, and the tone of the output sound is changed to change the electric field strength. Detect.
ホ、実施例 つぎに本発明方法を実施例により説明する。E, Example Next, the method of the present invention will be explained using examples.
第１図は本発明方法を実施するのに用いられる装粱のブ
ロック回路図である。第１図において、アンテナ１によ
り拾い上げられたＦＭ受信電波は、フロントエンド２に
おいて、増幅、周波数変換される。変換された中間制波
信号は、中間周波増幅および検波部３で増幅検波されて
、受信電界強度に応じた直流電圧出力が得られる。さら
に、この検波出力はＦＭマルチプ、レクテ４でステレオ
復調され、切換スイッチ８の接点Ａ側では、可聴周波数
増幅器５を経てスピーカ６から放送受信音が出力する。FIG. 1 is a block circuit diagram of a scallop used to carry out the method of the present invention. In FIG. 1, FM reception radio waves picked up by an antenna 1 are amplified and frequency converted at a front end 2. The converted intermediate wave control signal is amplified and detected by the intermediate frequency amplification and detection section 3, and a DC voltage output corresponding to the received electric field strength is obtained. Furthermore, this detection output is stereo demodulated by the FM multiplexer and receiver 4, and at the contact A side of the changeover switch 8, the broadcast reception sound is output from the speaker 6 via the audio frequency amplifier 5.
一方、スイッチ８を接点Ｂ側に倒した場合は、中間周波
増幅および検波部３の検波直流出力は、電圧制御可変周
波発振器（ＶＣＯ）７に加えられ、ＶＣＯ７は入力電圧
に応じて周波数が変化する可聴同波の発振出力を出す。On the other hand, when the switch 8 is turned to the contact B side, the detected DC output of the intermediate frequency amplification and detection section 3 is applied to the voltage controlled variable frequency oscillator (VCO) 7, and the frequency of the VCO 7 changes according to the input voltage. It emits an audible oscillation output.
したがって、この可変周波出力を増幅器５で増幅し、ス
ピーカ６に加えれば、スピーカ６からはＶＣＯ７の入力
゛電圧、すなわち、受信電界強度に応じて周波数の変わ
る可聴音が出力し、この音調を耳で聴き分けることによ
り、受信電界強度を知ることができる。Therefore, if this variable frequency output is amplified by the amplifier 5 and applied to the speaker 6, an audible sound whose frequency changes depending on the input voltage of the VCO 7, that is, the received electric field strength, is output from the speaker 6, and this tone can be heard by the ear. By listening to the signals, you can know the received electric field strength.
へ１発明の効果
本発明方法によると、従来、受信アンテナの方向を段階
的に変えながら、段階的にアンテナ位置を移動させ、そ
の都度セットのところに行き、メータ指示を確認すると
いう面倒さがなく、例えば、セットから離れたアンテナ
の位置で、アンテナを回しながら、スピーカの出す可聴
音の音調を聴き分け、最大受信電界強度の得ら才りる方
向に各局にアンテナを設定できる。1. Effects of the Invention According to the method of the present invention, the conventional method eliminates the trouble of moving the antenna position step by step while changing the direction of the receiving antenna step by step, and going to the set each time to check the meter reading. For example, by rotating the antenna at a position far from the set, it is possible to discern the tone of the audible sound emitted by the speaker, and set the antenna for each station in the direction that provides the maximum received field strength.
第１図は本発明方法を実施するのに用いる装置のブロッ
ク回路図である。
１・・・・・・受信アンテナ、２・・・・・・フロント
エンド、３・・・・・・中間周波増幅および検波部、５
・・・・・・可聴制波増幅器、６・・・・・・スピーカ
、７・・・・・・電圧制御可変周波発振器。FIG. 1 is a block circuit diagram of the apparatus used to carry out the method of the invention. 1... Receiving antenna, 2... Front end, 3... Intermediate frequency amplification and detection section, 5
...Audio control amplifier, 6 ... Speaker, 7 ... Voltage controlled variable frequency oscillator.
Claims (1)
電圧を電圧制御可変周波発振器に加え、この発振器出力
を可聴音を出す音響機器に加え、この音響機器の出力す
る可聴音の調子の高さにより前記受信電界強度を検知す
ることを特徴とする電界強度の検知方法。The output voltage of a detector that produces a DC output voltage corresponding to the received electric field strength is applied to a voltage-controlled variable frequency oscillator, and the output of this oscillator is applied to an audio device that produces an audible sound. A method for detecting electric field strength, comprising: detecting the received electric field strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20654184A JPS6184565A (en) | 1984-10-02 | 1984-10-02 | Detecting method of electric field intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20654184A JPS6184565A (en) | 1984-10-02 | 1984-10-02 | Detecting method of electric field intensity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6184565A true JPS6184565A (en) | 1986-04-30 |
Family
ID=16525082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20654184A Pending JPS6184565A (en) | 1984-10-02 | 1984-10-02 | Detecting method of electric field intensity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6184565A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338987U (en) * | 1988-06-20 | 1991-04-15 | ||
| JP4853518B2 (en) * | 2006-10-06 | 2012-01-11 | 株式会社島津製作所 | Spectrophotometer |
| US20150355252A1 (en) * | 2004-12-23 | 2015-12-10 | Power Survey Llc | Apparatus and method for monitoring and controlling detection of stray voltage anomalies |
-
1984
- 1984-10-02 JP JP20654184A patent/JPS6184565A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338987U (en) * | 1988-06-20 | 1991-04-15 | ||
| US20150355252A1 (en) * | 2004-12-23 | 2015-12-10 | Power Survey Llc | Apparatus and method for monitoring and controlling detection of stray voltage anomalies |
| JP4853518B2 (en) * | 2006-10-06 | 2012-01-11 | 株式会社島津製作所 | Spectrophotometer |
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