JPH0454736A - Matrix redundancy system for high output amplifier - Google Patents

Abstract

PURPOSE:To obtain a redundancy system with a low failure rate by adopting a matrix for an interface with 2 systems of RF sections and power supply sections. CONSTITUTION:A 1st SPDT switch 17 and a 2nd switch 18 are controlled by 1st and 2nd control signals 23, 24 so as to connect an RF section 7 and a power supply section 8, and a 3rd and 4th SPDT switches 19, 20 are controlled by 3rd and 4th control signals 25, 26 so as to connect an RF section 9 and a power supply section 10. When a fault takes place in a 1st or a 2nd active RF section, a 1st or a 2nd RF switch is thrown to the position of the standby system. In this case, the connection of the switches 17-22 is changed by using the control signals 23-26 so that the standby system RF section and the power supply section of the active system whose RF section is faulty are connected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a redundant system for high power amplifiers.

[Prior Art] Conventionally, there has been a system of this type as shown in the block diagram of FIG. (1) and (2) are the first and second input side RF switches, (3) and (4) are the first and second output side RF switches, (5) and (6) are the first and second input side RF switches.
゜1' and second telecommand signals for switching the second RF switch, 7) is the RF section of the first working high-output amplifier A1, and 8) is the power supply section of the first working high-output amplifier AI. , 9) is the RF section of the second working high-power amplifier A2, lO
) is the power supply section of the second working high-output amplifier A2, 11
) is standby high output amplifier A.

(12) is the power supply section of standby high-output amplifier A, (13) is the satellite bus line, (14), (
Is), (16) is the first. The first one instructs to start/stop the second active standby high-output amplifier power supply section. Second. A third on/off command signal is shown, respectively.

Next, the operation will be explained. During normal operation, the input side RF
The switch (1) and the output side RF switch (3) select the working system high output amplifier AI, and the input side RF switch (2) and the output side RF switch [4] select the working system high output amplifier A2, respectively. (2 systems of double signals) is the RF section (7),
(9), and the power supply parts (8) and (10) are R
Supply current to section F. At this time, the standby high-output amplifier A is an RF section (11).

The power supply unit (12) is also stopped. At this time, the satellite bus line (13) also supplies voltage to the power supply section of the standby high-output amplifier A. When a failure occurs in either of the active high-output amplifiers A, A, an on/off command (16) is sent to the standby high-output amplifier A, and an RF signal switching command (5) is sent to the standby high-output amplifier A. ),
In one of (6), the failed active system is switched to the standby system. On/off command (1
4) or (15) is sent and stopped.

[Problem to be solved by the invention] Since the conventional redundant system of high-output amplifiers mounted on satellites is configured as described above, 1.During normal operation, the RF section and power supply section of the amplifiers constituting the active system are If a failure occurs in one of the systems, there is a problem in that it is necessary to discard the operable equipment and switch to the standby system.

This invention was made to solve the above-mentioned problems, and aims to provide a redundant system with a further reduced failure rate.

[Means for Solving the Problems] In the matrix redundancy system for high-output amplifiers according to the present invention, among the RF sections and power supply sections constituting the active system, only those in which a failure has occurred are replaced with those in the standby system. The interface between the RF section and the power supply section of the high-output amplifier constituting the redundant system is arranged in a matrix so that the redundant system can be configured.

[Operation] In the present invention, by arranging the interfaces between the two systems of RF sections and the power supply section in a matrix, a redundant system with a lower failure rate than conventional redundant systems can be realized.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, (1), (2), (3)
, (4)(5), r6), (7)
(8), (9), (10),
(11).

(12), (13), (14), (15),
(16) is exactly the same as the conventional system. (
17), (18), (19), (20) are t
e t r a - S P D T (four i
dependently single pole d
ual throw) switch, (21), (
22) is t e t r a −S P s T (f
our independently single p
ole triple throw) switch, (
23).

(24), (25), (26) are tetra-3P
DT switch and tetra-SPs
The control signal controlling the T-switch is shown.

Next, the operation will be explained. During normal operation, the first 5PD
The T switch (17) and the second switch (18) are controlled by the first and second control signals (231, (24) so that the RF part (7) and the power supply part (8) are connected, and the third .Fourth 5
PDT switch (19) and (20) are RF part (9)
, the third control signal (2
5).

It is controlled by a fourth control signal (26). The rest is exactly the same as the conventional system. In addition, SP, T switch (2
1) and (22) are don't cares. first or second
When a failure occurs in the RF section of the active system,
The RF switch is switched to select the standby system. At this time, a control signal (23) is sent to establish a connection between the standby RF section and the power supply section of the active system whose RF section has failed;
(24), (25), (26), switches (17), (18), (19), (20)
, (21).

(22) connection is changed.

Similarly, when a failure occurs in the active system power supply unit, the active system RF unit and standby system power supply unit are connected, and the failed power supply unit is connected to the satellite bus using the on/off command (i4) or (15). Separated by a line.

[Effects of the Invention] As described above, according to the present invention, a redundant system with a lower failure rate than conventional systems can be obtained, except when the same part of the active and standby high-output amplifiers fails consecutively. It has the effect of

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a matrix redundancy system for high-output amplifiers mounted on a satellite according to an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional redundancy system. In the figure, (1) and (2) are input side RF switches, (3
). (4) is the output #RF switch, (5) and (6) are the telecommand signals, (7) and (9) are the RF section of the high output amplifier for the current system, (8) and (10) are the high output for the current system Power supply section of the amplifier, (11) is the RF section of the standby high output amplifier, (12) is the power supply section of the standby high output amplifier, (13) is the satellite bus line, (14), (1
5), (16) are on/off command signals, (17
), (18), (19), (20) are t6tra
-5PDT switch, (21), (22) are tet
ra-5P, T switch, (23), (24),
(25) and (26) indicate control signals. In addition, in FIG. 9, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A high-output amplifier that switches between two systems of RF signals.The RF switch, which is controlled by a pair of input and output independent control signals, is connected to the RF section of three high-output amplifiers arranged in parallel and the satellite bus line. It is inserted into the interface between the power supply unit, which is controlled on and off independently by on/off command signals, the three RF units, and the power supply unit, and one of the two directions is selected with one control signal system. A matrix redundancy system for high-output amplifiers, comprising two switch groups and a switch group that selects one direction out of three directions using two systems of control signals.