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WO2005101771B1 - Common mode detecting apparatus - Google Patents

Common mode detecting apparatus

Info

Publication number
WO2005101771B1
WO2005101771B1 PCT/JP2005/007668 JP2005007668W WO2005101771B1 WO 2005101771 B1 WO2005101771 B1 WO 2005101771B1 JP 2005007668 W JP2005007668 W JP 2005007668W WO 2005101771 B1 WO2005101771 B1 WO 2005101771B1
Authority
WO
WIPO (PCT)
Prior art keywords
amended
power lines
transmitting apparatus
conductors
pair
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.)
Ceased
Application number
PCT/JP2005/007668
Other languages
French (fr)
Other versions
WO2005101771A3 (en
WO2005101771A2 (en
Filing date
Publication date
Priority claimed from JP2004121455A external-priority patent/JP2005311411A/en
Priority claimed from JP2004121456A external-priority patent/JP2005311412A/en
Application filed filed Critical
Priority to EP05734057A priority Critical patent/EP1741202A2/en
Publication of WO2005101771A2 publication Critical patent/WO2005101771A2/en
Publication of WO2005101771A3 publication Critical patent/WO2005101771A3/en
Publication of WO2005101771B1 publication Critical patent/WO2005101771B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Abstract

A line state detecting apparatus provided in a balanced transmission system includes, in transmission lines comprising a pair of conductors W1, W2 connected to a transmitting portion 13, current transformers T11, T12 primary sides of which are inserted to respectives thereof in series therewith and secondary sides of which are connected in series to cancel currents or voltages of the two transformer by each other, and a detecting portion 11 for detecting currents or voltages on secondary sides of the current transformers T11, T12. By an output of the detecting portion 11, a difference of currents or voltages of the conductors W1, W2 of the transmission lines is provided and an unbalance component between the conductors W1, W2 is detected.

Claims

AMENDED CLAIMS[received by the International Bureau on 06 January 2006 (06.01.06); original claims 1, 3-16, 22, 24-33 amended; original claims 2, 17-21, 23, 34-38 cancelled;
1. (amended) A transmitting apparatus which transmits a transmission signal by using a pair of power lines, the transmitting apparatus comprising: an unbalance component detector for directly detecting an unbalance component between the pair of power lines; a line state calculator for calculating a state detecting signal indicating a line state of the pair of power lines based on the unbalance component detected by the unbalance component detector; a transmitter for transmitting the transmission signal to the pair of power lines; and a transmission signal controller for controlling the transmission signal by transmitted by the transmitter based on the state detecting signal calculated by the line state calculator.
2. (Cancelled)
3. (amended) The transmitting apparatus according to Claim 1, wherein the unbalance component detector comprises: current transformers primary windings of which are inserted to respectives of the pair of power lines in series therewith and secondary windings of which are connected in series and a detector for detecting currents or voltages of the secondary windings connected in series, wherein the secondary windings of the current transformers are connected to cancel the currents or the voltages of the two transformers by each other.
4. (amended) The transmitting apparatus according to Claim 1, wherein the unbalance component detector comprises: a common mode coil a first and a second winding of which are inserted to respectives of the pair of power lines in series therewith and including a third winding for detecting a common mode and a detector for detecting a voltage or a current induced in the third winding.
5. (amended) A power source connecting apparatus used for a transmitting
49 apparatus for detecting a state of a transmission line in a balanced transmission system for transmitting a data by using a pair of power lines and comprising an unbalance component detector for directly detecting an unbalance component between the pair of power lines, said power source connecting apparatus comprising: a common mode coil a first and a second winding of which, are inserted to respectives of the pair of power lines in series therewith and including a third winding for detecting a common mode as the unbalance component detector.
50
6. (amended) The transmitting apparatus according to Claim 2, wherein the unbalance component detector comprises an impedance provided between the pair of power lines and a detector for detecting a current or a voltage between a middle point of the impedance and the ground.
7. (amended) The transmitting apparatus according to Claim 6, further comprising: a detection transformer a primary winding of which is inserted between the middle point of the impedance and the ground; wherein the detector detects a current or a voltage of a second winding of the detection transformer.
8. (amended) The transmitting apparatus according to Claim 6, wherein the impedance serves also as a terminator of the pair of power lines.
9. (amended) The transmitting apparatus according to Claim 1, wherein the pair of power lines are connected to a transmitting apparatus or a receiving apparatus by way of a transmission transformer; and wherein the unbalance component detector comprises an impedance connected to a middle point of a winding on a side of the pair of power lines of the transmission transformer and a voltage detector for detecting a voltage between the impedance and the ground.
10. (amended) The transmitting apparatus according to Claim 1, wherein the pair of power lines are connected to a transmitting apparatus or a receiving apparatus by way of a transmission transformer; and wherein the unbalance component detector comprises a detector for detecting a current or a voltage between a middle point of a winding on a side of the pair of power lines of the transmission transformer and the ground.
51
11. (amended) The transmitting apparatus according to Claim 9, further comprising: a detection transformer a primary winding of which is inserted between the middle point of the winding on the side of the pair of power lines of the transmission transformer and the ground; wherein the detector detects a current or a voltage of the secondary winding of the detection transformer.
12. (amended) The transmitting apparatus according to Claim 10, further comprising: a detection transformer a primary winding of which is inserted between the middle point of the winding on the side of the pair of power lines of the transmission transformer and the ground; wherein the detector detects a current or a voltage of the secondary winding of the detection transformer.
13. (amended) The transmitting apparatus according to Claim 1, wherein the unbalance component detector detects an amplitude and a direction of the unbalance component between the pair of power lines.
14. (amended) The transmitting apparatus according to Claim 13, wherein the unbalance component detector compares phases of a transmission signal outputted to the conductors and a difference of a current or a voltage in a forward line and a rearward line of the conductors.
15. (amended) The transmitting apparatus according to Claim 13, wherein the unbalance component detector calculates a product of the transmission signal outputted to the conductor by the difference of the current or the voltage in the forward line and the rearward line of the conductors.
52
16. (amended) The transmitting apparatus according to Claim 13, further comprising- a phase shifter for controlling a phase of at least one of a transmission signal outputted to the conductors and a difference of a current or a voltage of in a forward line and a rearward line of the conductors.
17. (Cancelled)
18. (Cancelled)
19. (Cancelled)
20. (Cancelled)
21. (Cancelled)
22. (amended) A transmitting apparatus which transmits a transmission signal by using a pair of power lines, the transmitting apparatus comprising: an electrical component detector for detecting currents flowing in the power lines or voltages of the power lines or the both thereof for the respective power lines; an unbalance component calculator for calculating a difference of the currents of the respective power lines or a difference of the voltages of the respective power lines or both thereof detected by the electrical component detector; a transmitter for transmitting the transmission signal to the pair of power lines; and a transmission signal controller for controlling the transmission signal by transmitted by the transmitter based on the difference of the currents or the difference of the voltages or both thereof calculated by the unbalance component calculator.
23. (Cancelled)
24. (amended) The transmitting apparatus according to Claim 22, wherein the electrical component detector includes a current detector for detecting the currents flowing in the conductors for the respective conductors.
54
25. (amended) The transmitting apparatus according to Claim 24, wherein the current detector includes impedances inserted to respectives of the pair of power lines in series therewith and a voltage detector for detecting voltages across both ends of the impedances.
26. (amended) The line detecting apparatus according to Claim 24, wherein the current detector includes current transformers primary windings of which are inserted to respectives of the pair of power lines in series therewith and a current detector for detecting currents or voltages of secondary windings of the current transformers.
27. (amended) The transmitting apparatus according to Claim 22, wherein the electrical component detector includes a voltage detector for detecting voltages of the conductors relative to a predetermined reference potential for the respective conductors.
28. (amended) The transmitting apparatus according to Claim 22, wherein the unbalance component calculator calculates at least one of a difference of currents of a forward line and a rearward line of the respective conductors and a common mode amount of voltages of the respective conductors as the difference.
29. (amended) The transmitting apparatus according to Claim 22, wherein the unbalance component calculator calculates an amplitude and a direction of an unbalance component between the pair of power lines based on the difference.
30. (amended) The transmitting apparatus according to Claim 29, wherein the unbalance component calculator compares phases of a transmission signal outputted to the conductors or the currents or the voltages of the conductors and the difference of the currents of the forward line and the rearward line of the conductors or the amount of the common mode voltage.
31. (amended) The transmitting apparatus according to Claim 29, wherein the unbalance component calculator calculates a product of the transmission signal outputted to the conductors or the currents or the voltages of the conductors by the difference of the currents of the forward line and the rearward line of the conductor or
55 the amount of the common mode voltage.
56
32. (amended) The transmitting apparatus according to 30, further comprising: a phase shifter for controlling at least one of the phases of the transmission signal outputted to the conductors or the currents or the voltages of the conductors and the difference of the currents of the forward line and the rearward line of the conductors or the amount of the common mode voltage.
33. (amended) The transmitting apparatus according to 31, further comprising: a phase shifter for controlling at least one of the phases of the transmission signal outputted to the conductors or the currents or the voltages of the conductors and the difference of the currents of the forward line and the rearward line of the conductors or the amount of the common mode voltage.
34. (Cancelled)
35. (Cancelled)
36. (Cancelled)
57
AMENDED SHEET (AF; HCLE !9)
37. (Cancelled)
38. (Cancelled)
58
PCT/JP2005/007668 2004-04-16 2005-04-15 Common mode detecting apparatus Ceased WO2005101771A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05734057A EP1741202A2 (en) 2004-04-16 2005-04-15 Common mode detecting apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004-121455 2004-04-16
JP2004121455A JP2005311411A (en) 2004-04-16 2004-04-16 Line state detection device, and transmission device and reception device of balanced transmission system
JP2004-121456 2004-04-16
JP2004121456A JP2005311412A (en) 2004-04-16 2004-04-16 Line state detection device, and transmission device and reception device of balanced transmission system

Publications (3)

Publication Number Publication Date
WO2005101771A2 WO2005101771A2 (en) 2005-10-27
WO2005101771A3 WO2005101771A3 (en) 2006-01-12
WO2005101771B1 true WO2005101771B1 (en) 2006-03-02

Family

ID=34965364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/007668 Ceased WO2005101771A2 (en) 2004-04-16 2005-04-15 Common mode detecting apparatus

Country Status (3)

Country Link
US (1) US8139759B2 (en)
EP (1) EP1741202A2 (en)
WO (1) WO2005101771A2 (en)

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