JPS6233642U - - Google Patents
Info
- Publication number
- JPS6233642U JPS6233642U JP12157185U JP12157185U JPS6233642U JP S6233642 U JPS6233642 U JP S6233642U JP 12157185 U JP12157185 U JP 12157185U JP 12157185 U JP12157185 U JP 12157185U JP S6233642 U JPS6233642 U JP S6233642U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- square wave
- distribution line
- waveform
- transmission
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims 7
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Description
第１図は本考案の実施例を示すブロツク図、第
２図は第１図における各部の波形を示す図である
。
１ａ〜１ｃ：配電線、２：他の部位、３，１３
：変圧器、４，１４：波形変換器、５：変調器、
６：送信機、７，９：アンテナ、８：特定部位、
１０：受信機、１１：復調器、１２：遅延回路、
１５：位相比較器、ａ〜ｃ：交流波形、ｄ：方形
波、ｅ：被検相方形波、ｇ：基準波、ｈ：比較出
力。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing waveforms of various parts in FIG. 1a-1c: Distribution line, 2: Other parts, 3, 13
: Transformer, 4, 14: Waveform converter, 5: Modulator,
6: Transmitter, 7, 9: Antenna, 8: Specific part,
10: receiver, 11: demodulator, 12: delay circuit,
15: Phase comparator, a to c: AC waveform, d: square wave, e: test phase square wave, g: reference wave, h: comparison output.
Claims (1)
流波形を該波形の零クロス点を変換点とする方形
波へ変換し、伝送回線を通過する周波数の搬送波
を前記方形波により変調し送信信号として前記伝
送回線により送信し、前記配電線の他の部位にお
いて前記伝送回線を介して前記送信信号を受信し
、該受信出力を復調して受信方形波を得、前記他
の部位における配電線の相別が判明している特定
相から得た交流波形を該波形の零クロス点を変化
点とする基準波形へ変換し、該基準波形と前記受
信方形波とを前記変調から復調までの伝送遅延時
間を補償してから位相比較を行ない該比較出力に
より、前記特定相と、前記相別の不明な被検相と
の位相関係を検出することを特徴とした配電線検
相装置。 An AC waveform obtained from an unknown phase to be tested on a multi-wire distribution line is converted into a square wave whose conversion point is the zero crossing point of the waveform, and the carrier wave of the frequency passing through the transmission line is converted into a square wave using the square wave. modulating and transmitting it as a transmission signal through the transmission line, receiving the transmission signal via the transmission line at another part of the distribution line, demodulating the reception output to obtain a reception square wave, and transmitting the transmission signal to the other part of the distribution line; converting an alternating current waveform obtained from a specific phase of the distribution line whose phase classification is known into a reference waveform whose changing point is the zero cross point of the waveform, and demodulating the reference waveform and the received square wave from the modulation. A distribution line phase detection device comprising: compensating for a transmission delay time before performing a phase comparison, and detecting a phase relationship between the specific phase and the unknown phase to be tested based on the comparison output. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985121571U JPH051959Y2 (en) | 1985-08-09 | 1985-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985121571U JPH051959Y2 (en) | 1985-08-09 | 1985-08-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6233642U true JPS6233642U (en) | 1987-02-27 |
| JPH051959Y2 JPH051959Y2 (en) | 1993-01-19 |
Family
ID=31010970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985121571U Expired - Lifetime JPH051959Y2 (en) | 1985-08-09 | 1985-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051959Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5640766A (en) * | 1979-09-10 | 1981-04-17 | Masatoshi Takeda | Phase detection system for transmission line |
-
1985
- 1985-08-09 JP JP1985121571U patent/JPH051959Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5640766A (en) * | 1979-09-10 | 1981-04-17 | Masatoshi Takeda | Phase detection system for transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051959Y2 (en) | 1993-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0693704B2 (en) | Baseband signal communication device | |
| JPH051959Y2 (en) | ||
| FR2420768A1 (en) | MEASUREMENT OF A RADIOFREQUENCY IMPEDANCE | |
| JP2560624B2 (en) | Sonar device | |
| JPS61153571A (en) | Phase detection system for distribution line | |
| JPS5984698U (en) | liquid analyzer | |
| JPH0342379Y2 (en) | ||
| JPS60184194U (en) | Measured value wireless transmission device | |
| JPS5923898U (en) | material testing equipment | |
| JPS64845A (en) | Communication system for multilevel amplitude modulating and demodulating system | |
| JP2874368B2 (en) | Data transmission coupler | |
| JPS5925482U (en) | phase detector | |
| JPH067339U (en) | Radio with reception field strength display data transmission function | |
| JPH07151859A (en) | Sonar equipment | |
| JPS604056U (en) | Vehicle-to-vehicle point communication device | |
| JPH022797U (en) | ||
| JPS60239145A (en) | Transmission and reception circuit | |
| JPH07249189A (en) | Radio wave remove measuring instrument for straightening | |
| JPS60107954A (en) | Processing system of analog-digital converting signal | |
| JPS5967047U (en) | receiving device | |
| JPS6312781U (en) | ||
| JPH01122630U (en) | ||
| JPH0360080U (en) | ||
| JPS6228185U (en) | ||
| JPH0211960B2 (en) |