JPS6059829A - Power line carrier transmitter - Google Patents
Power line carrier transmitterInfo
- Publication number
- JPS6059829A JPS6059829A JP16862983A JP16862983A JPS6059829A JP S6059829 A JPS6059829 A JP S6059829A JP 16862983 A JP16862983 A JP 16862983A JP 16862983 A JP16862983 A JP 16862983A JP S6059829 A JPS6059829 A JP S6059829A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- power line
- microcomputer
- carrier
- line carrier
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は搬送波を商用電源の電力線を介して送信するこ
とにより通信を行なう電力線搬送制御用送信器に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a power line carrier control transmitter that performs communication by transmitting carrier waves via a commercial power line.
従来例の構成とその問題点
従来、この種の電力線搬送用送信器は、第１図で示すよ
うに、電力線搬送制御システムの制御をつかさとるマイ
コン１と、搬送波を発振するＬＣ発振回路２と、その搬
送波を増幅して電力線に出力する増幅器３とから成って
いた。４は入出カドランス、５は電源周波数カット用コ
ンデンザである。しかし々から、とのよう々従来例にお
いては回路が複雑になるばかりでなく、ＩＣの定数バラ
ツキにより発振周波数が変動するため、発振周波数の調
整も行なわなければならないという欠点があった。Conventional Structure and Problems Conventionally, this type of power line carrier transmitter, as shown in FIG. , and an amplifier 3 that amplifies the carrier wave and outputs it to the power line. 4 is an input/output quadrant, and 5 is a capacitor for cutting power frequency. However, in the conventional example, not only the circuit becomes complicated, but also the oscillation frequency fluctuates due to variations in the constants of the IC, so the oscillation frequency has to be adjusted.
発明の目的
本発明は上記従来の問題点を解消するもので、マイコン
の外部クロックを分周することにより搬送周波数を作り
出す安価で小型の電力線搬送用送信器を提供することを
目的とする。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object thereof is to provide an inexpensive and small-sized power line carrier transmitter that generates a carrier frequency by frequency-dividing an external clock of a microcomputer.
発明の構成
本発明の電力線搬送用送信器は搬送波の送出を制御する
マイコンと、このマイコンの外部クロックを分周する分
周器と、分周されたパルス信号を正弦波に変換するＬＣ
共振回路と、この正弦波を増幅する増幅器とを備えたも
のであり、マイコンの外部クロックを利用することによ
り、複雑々発振回路を用いること外しに正確な電力線搬
送周波数を作り出すことができるものである。Structure of the Invention The power line carrier transmitter of the present invention includes a microcomputer that controls transmission of a carrier wave, a frequency divider that divides the external clock of this microcomputer, and an LC that converts the frequency-divided pulse signal into a sine wave.
It is equipped with a resonant circuit and an amplifier that amplifies this sine wave, and by using the microcontroller's external clock, it is possible to create an accurate power line carrier frequency without using a complicated oscillation circuit. be.
実施例の説明
第２図は本発明の一実施例の構成を示すブロック図であ
る。図において６は電力線搬送制御システムの制御をつ
かさどるマイコンで、搬送波の送出を制御する。７はマ
イコン６を駆動する外部クロック、８はその外部クロッ
ク７を分周し必要とする搬送周波数を作り出す分周器、
９はその分周されたパルス信号を正弦波に変換するＬＣ
共振回路、１０はその正弦波に変換された搬送波を増幅
して電力線に出力する増幅器である。１１は入出カドラ
ンス、１２は電源周波数カット用コンデンサである。DESCRIPTION OF THE EMBODIMENT FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, 6 is a microcomputer that controls the power line carrier control system and controls the transmission of carrier waves. 7 is an external clock that drives the microcomputer 6; 8 is a frequency divider that divides the frequency of the external clock 7 to create the necessary carrier frequency;
9 is an LC that converts the frequency-divided pulse signal into a sine wave.
The resonant circuit 10 is an amplifier that amplifies the carrier wave converted into a sine wave and outputs it to the power line. Reference numeral 11 represents an input/output quadrant, and reference numeral 12 represents a power supply frequency cutting capacitor.
以上のように構成された本実施例における電力線搬送用
送信器について以下その動作を説明する。The operation of the power line carrier transmitter in this embodiment configured as described above will be described below.
一般渥マイコンの外部クロックは数ＭＨｚ であり、壕
だ、電力線搬送制御システムの搬送周波数は一般に数百
ＫＨｚである。したがって、まず、マイコン６の外部ク
ロック７を分周器８で分周し、必要とする搬送周波数を
作り出し、それをＬＣ共振回路９で正弦波に変換した後
、増幅器１ｏを通して電力線に送出するようにする。マ
イコン６の外部クロック７を分周し通信に利用するとい
う方法は従来から知られていたが、本実施例においては
分周したパルス信号を正弦波に変換し搬送波を作り出し
、信号の送出はマイコン６が増幅器１゜を制御すること
により行なうという点で従来のものとは異なるものであ
る。The external clock of a general microcomputer is several MHz, and the carrier frequency of a power line carrier control system is generally several hundred kHz. Therefore, first, the frequency of the external clock 7 of the microcomputer 6 is divided by the frequency divider 8 to create the required carrier frequency, which is converted into a sine wave by the LC resonance circuit 9, and then sent to the power line through the amplifier 1o. Make it. A method of frequency-dividing the external clock 7 of the microcomputer 6 and using it for communication has been known in the past, but in this embodiment, the frequency-divided pulse signal is converted into a sine wave to create a carrier wave, and the signal is sent to the microcomputer. 6 is different from the conventional one in that this is done by controlling the amplifier 1°.
発明の効果
本発明の電力線搬送用送信器は、分周器を設けることに
より、複雑な発振回路、及び搬送周波数の調整を不要と
した正確な搬送周波数を作り出すものである。なお、分
周器はマイコンの内部に組み込むことも可能であるだめ
、回路を一層小型に出来る効果も奏している。Effects of the Invention By providing a frequency divider, the power line carrier transmitter of the present invention creates an accurate carrier frequency without requiring a complicated oscillation circuit or carrier frequency adjustment. Note that the frequency divider can also be incorporated inside the microcomputer, which has the effect of making the circuit even more compact.
第１図は従来の電力線搬送用送信器のブロック図、第２
図は本発明の一実施例における電力線搬送用送信器のブ
ロック図である。
６・・・・・・マイコン、７・・・・・・外部クロック
、８・・・・・・分周器、９・・・・・・ＬＧ共振回路
、１ｏ・・・・・・増幅器。Figure 1 is a block diagram of a conventional power line carrier transmitter, Figure 2 is a block diagram of a conventional power line carrier transmitter.
The figure is a block diagram of a power line carrier transmitter in an embodiment of the present invention. 6... Microcomputer, 7... External clock, 8... Frequency divider, 9... LG resonance circuit, 1o... Amplifier.
Claims (1)
部クロックを分周する分周器と、分周されプζパルス信
号を正弦波に変換するＬＣ共振回路と、この正弦波を増
幅する増幅器とを備えた電力線搬送用送信器。A microcomputer that controls the transmission of carrier waves, a frequency divider that divides the external clock of this microcomputer, an LC resonance circuit that converts the frequency-divided pulse signal into a sine wave, and an amplifier that amplifies this sine wave. Transmitter for power line carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16862983A JPS6059829A (en) | 1983-09-13 | 1983-09-13 | Power line carrier transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16862983A JPS6059829A (en) | 1983-09-13 | 1983-09-13 | Power line carrier transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6059829A true JPS6059829A (en) | 1985-04-06 |
Family
ID=15871591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16862983A Pending JPS6059829A (en) | 1983-09-13 | 1983-09-13 | Power line carrier transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6059829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04134163U (en) * | 1991-06-05 | 1992-12-14 | 松下電器産業株式会社 | Bearing device for motor with worm gear |
-
1983
- 1983-09-13 JP JP16862983A patent/JPS6059829A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04134163U (en) * | 1991-06-05 | 1992-12-14 | 松下電器産業株式会社 | Bearing device for motor with worm gear |
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