JPH07312565A - Power supply device for outdoor communication device - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding a power supply device for supplying power to an outdoor device in a transmitter / receiver device including an outdoor device and an indoor device,
An object of the present invention is to ensure that the current supply from the ODU power supply device is cut off when the coaxial cable connected to the output end of the superimposing device is removed and the measuring device is connected to the output end. [Structure] Normally, the current from the power supply unit 51 and I
The signal from the DU transceiver is superimposed by the superimposing device 33 and sent to the outdoor device 20. Therefore, the current amount detection circuit 52 detects a current amount exceeding a predetermined value, and based on that, the control unit 53 causes the power supply unit 51 to continue supplying current to the superimposing device 33. On the other hand, the superposition device 3
When the coaxial cable 40 connected to the output end of No. 3 is removed, the current amount detection circuit 52 detects only a current equal to or less than a predetermined value (actually 0). Therefore, the control unit 53
Causes the power supply unit 51 to stop supplying current to the superimposing device 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for supplying power to an outdoor device in a transmitter / receiver consisting of an outdoor device and an indoor device, and particularly to an outdoor transmitter / receiver installed in an antenna in a ground station for satellite communication. The present invention relates to a power supply device for an outdoor communication device in which a device and an indoor transceiver device are connected by a single coaxial cable, and power can also be supplied to the outdoor transceiver device via this cable.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, in a ground station for satellite communication, an outdoor device (O) including an RF band transmitter / receiver is provided near a parabona antenna 101.
DU) 102 is installed, an indoor unit (IDU) 103 is installed at a place slightly apart from the antenna 101, and a power supply device 103a for supplying power to the outdoor device 102 and an IF band transmission / reception device for the indoor device 103 And 103b.

In this case, the outdoor unit 102 and the indoor unit 1
A cable 104 for a power source and a cable 105 for a signal are required between the device 03 and the device 03, and there is a problem in the cost of cable laying, maintenance, and the like. A system has been developed that requires only one cable.

That is, as shown in FIG. 14, a superimposing device 106c is provided in an indoor unit (IDU) 106, and the superimposing device 106c is used to supply the ODU power supply device 106.
The DC power supply current from a and the signal from the IDU transmitter / receiver 106b are superimposed and sent to the outdoor unit (ODU) 108 by one coaxial cable 107. The outdoor device 108 is provided with a separating device 108a to separate the DC power supply current and the signal, the signal is sent to the ODU transmitting / receiving device 108c, and the DC power supply current is passed through the ODU power supplying device 108b.
It will be sent to 08c. By doing this,
All that is required is to lay one cable between the outdoor device 108 and the indoor device 106.

Usually, each device in the indoor unit 106 is constituted by an independent printed wiring board, and these printed wiring boards are mounted on a rack and connected to each other to constitute the indoor unit 106. By the way, the indoor unit 106
When newly installed, to check whether the signal is normally sent from the indoor unit 106 to the outdoor unit 108, or to adjust the performance deviation or the like that has occurred in the indoor unit 106 during transportation correctly, In addition, the coaxial cable 107 is placed on the superimposing device 1 in order to identify a faulty portion when a fault occurs.
It is removed from 06c, and a measuring instrument such as a spectrum analyzer is connected to the output end of the superimposing device 106c for investigation and adjustment.

The superimposing device 106c is
It is mounted at a position where it is easy to perform work from the outside of the rack, and therefore, the superimposing device 106c is mounted at a position away from the ODU power supply device 106a and the IDU transmitting / receiving device 106b.

[0007]

However, the superposition device 10
When connecting a measuring device such as a spectrum analyzer to the output end of 6c, it is necessary to cut off the current supply from the ODU power supply device 106a, but forget this interruption and connect the measuring device. Therefore, the expensive measuring device may be damaged. Further, the power supply device 10 for ODU
Since 6a is separated from the superimposing device 106c, it is difficult to operate the breaker switch for cutting off the current supply of the ODU power supply device 106a only by removing the lid near the superimposing device 106c covering the rack. It was

The present invention has been made in view of the above circumstances, and when the coaxial cable connected to the output end of the superimposing device is removed and the measuring device is connected to the output end of the coaxial cable, the power supply device for the ODU is provided. An object of the present invention is to provide a power supply device in which the current supply from the device is reliably cut off.

[0009]

In order to achieve the above object, the present invention is directed to an outdoor unit 2 in a transmitter / receiver comprising an outdoor unit 20 and an indoor unit 30 as shown in FIGS.
A power supply device for supplying power to 0 is provided. The power supply device for the outdoor communication device is a power supply means (51) installed on the indoor device 30 side and serving as a power source for the outdoor device 20.
A superimposing means (33) which is installed on the indoor device 30 side and superimposes the current from the power supply means (51) and the signal from the indoor side transmitting / receiving device (31) to the outdoor device 20, and the power supply means ( The current amount detecting means (52) for detecting the current amount from the superimposing means (33) to the superimposing means (33) and the operation of the power source means (51) according to the current amount detected by the current amount detecting means (52). And a power supply control means (53).

[0010]

In the above structure, the power source means (5
The current from 1) and the signal from the indoor transmitter / receiver (31) are superimposed by the superimposing means (33), and the outdoor device 2
Sent to 0. Therefore, the current amount detecting means (52) detects the amount of current exceeding a predetermined value, and based on that, the power source control means (53) causes the power source means (51) to superimpose means (3).
Continue to supply current to 3). On the other hand, the superimposing means (3
When the coaxial cable 40 connected to the output end of 3) is removed, the current amount detecting means (52) detects only a current equal to or less than a predetermined value (actually 0), so the power supply controlling means (53) The power supply means (51) stops the current supply to the superposition means (33).

Thus, when the coaxial cable 40 connected to the output end of the superimposing means (33) is removed and the measuring instrument is connected to the output end, the current supply from the power supply means (51) is surely cut off. , The destruction of the measuring instrument is prevented.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing an overall configuration of an earth station transceiver device including a power supply device for an outdoor communication device according to the present invention. The earth station transmitter / receiver is an earth station device for transmitting / receiving to / from a communication satellite, and includes a parabona antenna 10, an outdoor unit (ODU) 20 installed near the parabona antenna 10, and a little away from the parabona antenna 10. It is composed of an indoor unit (IDU) 30 installed in a remote place and a coaxial cable 40 connecting the outdoor unit 20 and the indoor unit 30.

The indoor unit 30 includes an IDU transmitter / receiver 31.
And an ODU power supply device 32 and a superposition device 33. The IDU transmitter / receiver 31 combines the transmission IF signal, the reference signal, and the supervisory control signal with the built-in distribution / combination unit 31a and sends the combined signal to the superimposing device 33, and the composite signal sent from the superimposing device 33 is distributed / combined. It is separated by 31a, receives the reception IF signal and the monitor control signal, and sends them to each processing device (not shown). The ODU power supply device 32 is a device according to the present invention that supplies a direct current to the outdoor device 20, and the detailed content thereof will be described later.
The superimposing device 33 includes a capacitor C1 and a coil L1, and superimposes the DC current from the ODU power supply device 32 on the combined signal from the IDU transmitting / receiving device 31 and outputs the superimposed signal to the coaxial cable 40. The outdoor device 20 to the indoor device 3
The signal sent to 0 passes through the capacitor C1 of the superimposing device 33, is blocked by the coil L1, and is sent only to the IDU transmitting / receiving device 31. Of course, the DC current from the ODU power supply device 32 is cut off by the capacitor C1 of the superposition device 33,
It does not affect the IDU transmitter / receiver 31.

The outdoor unit 20 is an ODU transmitter / receiver 21.
And an ODU power supply device 22 and a separation device 23.
The separation device 23 is composed of a capacitor C2 and a coil L2, and separates a composite signal, which is sent from the indoor device 30 via the coaxial cable 40 and on which the DC current is superimposed, into a DC current and a composite signal, and a DC current. To the ODU power supply device 22 and the combined signal to the ODU transmission / reception device 21. The ODU transmitter / receiver 21 includes a distribution / synthesis unit 21a that includes the transmitted synthesized signal.
The transmission IF signal, the reference signal, and the supervisory control signal are separated, and frequency conversion to the RF band is performed and output to the parabona antenna 10.
Frequency conversion of the RF band signal received from 0 is performed, and the received IF signal and the monitoring control signal obtained as a result are combined by the distribution combining unit 21a and sent to the separation device 23. The ODU power supply device 22 supplies the sent DC current to the ODU transmission / reception device 21 as a power supply.

FIG. 1 is a block diagram showing a first embodiment of the internal configuration of the ODU power supply device 32.
In the figure, the ODU power supply device 32 includes a DC30V power supply unit 51 for supplying power to the superposition device 33, a current amount detection circuit 52 inserted between the superposition device 33 and the power supply unit 51, and a current amount detection. The control unit 53 controls the operation of the power supply unit 51 by receiving the output of the circuit 52. The current amount detection circuit 52 detects the amount of current supplied from the power supply unit 51 to the superimposing device 33, and the detected amount of current is sent to the control unit 53. The control unit 53 compares the amount of current with a predetermined value, and if it exceeds the predetermined value, it causes the power supply unit 51 to output a current to the superimposing device 33. On the other hand, the current output to the superimposing device 33 is stopped.

Therefore, the coaxial cable 40 shown in FIG.
Is removed from the output end of the superimposing device 33, and a measuring instrument such as a spectrum analyzer is connected to the output end to perform various investigations and adjustments, the coaxial cable 40 causes the superimposing device 3 to move.
3 is removed from the power supply unit 51, the direct current that has been sent from the power supply unit 51 to the ODU transmitter / receiver 21 through the superposition device 33, the coaxial cable 40, and the like is cut off, and the current detected by the current amount detection circuit 52 is removed. The amount drops below a predetermined value (actually becomes 0). This allows the power supply unit 5
The power supply from 1 is cut off, and therefore the superimposing device 3
Even if the measuring device is connected to the output terminal of 3, the DC voltage of 30 V is not applied to the measuring device, and damage to the measuring device can be prevented.

The control unit 53, once the power supply to the power supply unit 51 is cut off, stops.
Until the breaker switch inside is reset, it is controlled so as to maintain its cutoff state.

FIG. 3 is a block diagram showing a second embodiment of the internal configuration of the ODU power supply device 32.
In the figure, the ODU power supply device 32 includes a DC30V power supply unit 54 for supplying power to the superimposition device 33, a current amount detection circuit 55 inserted between the superposition device 33 and the power supply unit 54, and a current amount detection. It is composed of an alarm device 56 which receives the output of the circuit 55 and notifies the operator. The current amount detection circuit 55 detects the amount of current supplied from the power supply unit 54 to the superimposing device 33, and the detected amount of current is sent to the alarm device 56. The alarm device 56 compares the amount of current with a predetermined value, and when the current amount drops below the predetermined value, an alarm sound is generated.

Therefore, the coaxial cable 40 shown in FIG.
Is removed from the output end of the superimposing device 33, and when a measuring instrument is connected to the output end to perform various investigations and adjustments, the coaxial cable 40 is removed from the superimposing device 33. Superposition device 33, coaxial cable 4
The DC current sent to the ODU transmitter / receiver 21 via 0 or the like is cut off, and the current amount detected by the current amount detection circuit 55 decreases to a predetermined value or less. Thereby, the alarm 56
Generates an alarm sound to the operator, informs the operator that the DC power is supplied to the output end of the superposition device 33, and prevents the measuring device from being connected to the output end of the superposition device 33.

In addition, the alarm 56, when the power supply is cut off by the breaker switch of the power supply unit 51,
The generation of the alarm sound is stopped. The alarm device 56 generates an alarm sound, but in addition to this, it may be configured to generate light, vibration or the like for notification.

Next, a third embodiment will be described. Since the configuration of the third embodiment is slightly different from the overall configuration shown in FIG. 2, FIG. 4 shows the overall configuration. In the figure, indoor unit (IDU)
60 comprises an IDU transmitter / receiver 61, an ODU power supply unit 62, a superposition separation device 63, a relay 64, and a control unit 65. The IDU transmitter / receiver 61 is shown in FIG.
The IDU transmitter / receiver 31 has the same configuration. The power supply unit 62 is superposed on the outdoor unit (ODU) 67 and separated.
3 is a power supply device for supplying a direct current through The superposition / separation device 63 superimposes the DC current from the power supply unit 62 on the combined signal from the IDU transmission / reception device 61 and outputs the superposed signal to the coaxial cable 66. In addition, as described below, the outdoor device 67
The superimposed signal of the combined signal and the loop signal sent from the indoor device 60 to the indoor device 60 is separated by the superposition separation device 63, the combined signal is sent to the IDU transmitting / receiving device 61, and the loop signal is sent to the relay 64. The relay 64 operates by a loop signal which is a direct current and sends an ON signal to the control unit 65. The control unit 65 controls the output of the power supply unit 62 based on the input of the ON signal, as described later.

The outdoor unit 67 is an ODU transmitter / receiver 68.
, An ODU power supply device 69, a superposition separation device 70, and a loop signal output unit 71. The ODU transmitter / receiver 68 and the ODU power supply 69 have the same configurations as the ODU transmitter / receiver 21 and the ODU power supply 22 of FIG. 2, respectively. The loop signal output unit 71 is composed of a battery. The superimposition separation device 70 separates the composite signal, which is sent from the indoor device 60 via the coaxial cable 66 and on which the direct current is superimposed, into a direct current and a composite signal, and combines the direct current into the ODU power supply device 69. ODU transmitter / receiver device 6
Send to 8. Further, the superimposition separation device 70 superimposes the loop signal, which is the direct current sent from the loop signal output unit 71, and the combined signal from the ODU transmitter / receiver 68, and sends it to the indoor device 60 via the coaxial cable 66.

Therefore, normally, the loop signal from the loop signal output unit 71 reaches the relay 64 via the superposition separation device 70, the coaxial cable 66, and the superposition separation device 63, and the relay 64 outputs the ON signal to the control unit 65.
Output to. Based on this, the control unit 65 causes the power supply unit 62 to supply the direct current to the superposition separation device 63. On the other hand, when the coaxial cable 66 is removed from the output end of the superposition separation device 63 and a measuring device is connected to the output end for various investigations and adjustments, the coaxial cable 6
Since 6 is removed from the superposition separation device 63, the loop signal does not reach the relay 64, so that the ON signal is not output to the control unit 65. As a result, the control unit 65 causes the power supply unit 62 to stop supplying the direct current to the superposition separation device 63. Therefore, even if the measuring device is connected to the output terminal of the superposition separation device 63, a DC voltage is not applied to the measuring device, and the measuring device can be prevented from being damaged. Once the power supply to the power supply unit 62 is cut off, the control unit 65 controls to maintain the cutoff state until the breaker switch in the power supply unit 62 is reset.

A direct current is output as a loop signal from the loop signal output unit 71. Instead of this, the loop signal output unit 71 outputs an alternating signal of a predetermined cycle, and instead of the relay 64, You may make it equip with the detection apparatus which detects the input of the alternating current signal of the predetermined period. Further, instead of the AC signal having a predetermined cycle, a pulse having a predetermined code may be used.

Next, a fourth embodiment will be described. The fourth embodiment has the configuration of the indoor device 30 shown in FIG.
It is arranged as shown in. That is, each device of the indoor device 30 is mounted inside the rack 30a. For example, rack 30a
A power supply unit 32e and an IDU transmitter / receiver 31 which form the ODU power supply device 32 (FIG. 2) are mounted on the lower part of the rack, and the superposition device 33 is mounted on the rack 30a.
Then, the coaxial cable 40 is led out of the rack 30a. The ODU power supply device 32 includes a power supply unit 32e, which is a DC power supply device, and a micro switch 32a described later.
And a control unit 32b.

The rack 30a of the indoor unit 30 is covered with a cover, and an opening 30b is provided in a part of the frame 30a near the superposition unit 33. Then, a lid 30c is provided to cover the opening 30b. The lid 30c normally covers the opening 30b, but when the coaxial cable 40 is removed from the output end of the superimposing device 33 and a measuring instrument is connected to the output end for various investigations and adjustments, the opening is opened. It is removed from the part 30b.

A micro switch 32a is provided on the rack 30a behind the lid 30c. Micro switch 32a
The arrangement position is taken into consideration so that it is turned on by removing the lid 30c. The micro switch 32a is
Connected to the control unit 32b, the control unit 32b controls the output of the power supply unit 32e. That is, the lid 3
While 0c is attached to the opening 30b, the micro switch 32a is off, and the control unit 32
b causes the power supply unit 32e to supply power to the outdoor device 21 via the superposition device 33. On the other hand, when the lid 30c is removed from the opening 30b in order to connect a measuring device to the output end of the superimposing device 33 and perform various investigations and adjustments, the micro switch 32a is turned on, and the control unit 32b is connected to the power supply unit 32e. The power supply to the device 21 is stopped.

As described above, since the DC power supplied to the output end of the superimposing device 33 is cut off only by removing the lid 30c, even if the measuring device is connected to the output end of the superimposing device 33, the DC power is not supplied. Since no voltage is applied to the measuring instrument, damage to the measuring instrument can be prevented.

6 and 7 are diagrams showing a fifth embodiment.
Since the configuration of the fifth embodiment is basically the same as the configuration of the fourth embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

In the fifth embodiment, the micro switch 32a is provided on the rack 30a in the fourth embodiment, whereas the micro switch 32c corresponding to the micro switch 32a is provided in the casing of the superposing device 33. Of these, it is provided on the side of the rack 30a that faces the lid 30c. The operation of the fifth embodiment is the same as the operation of the fourth embodiment, and the lid 30c is removed from the opening 30b in order to connect a measuring device to the output end of the superposition device 33 and perform various investigations and adjustments. Then, the micro switch 32c is turned on, and the control unit 32b causes the power supply unit 32e to stop the power supply to the outdoor device 21.

FIG. 8 is a diagram showing a sixth embodiment. Sixth
Since the configuration of this embodiment is basically the same as the configuration of the fourth embodiment, only the different parts are shown and the same components are designated by the same reference numerals and their description is omitted.

In the sixth embodiment, a micro switch 32d corresponding to the micro switch 32a of the fourth embodiment is provided in the casing of the superposing device 33 at a position adjacent to the coaxial connector 33a on the superposing device 33 side. The coaxial cable 4 adjacent to the coaxial connector 40a on the coaxial cable 40 side
At 0, an L-shaped push fitting 73 is provided. This push metal fitting 7
3 turns off the micro switch 32d by screwing the coaxial connector 40a into the coaxial connector 33a.

Therefore, while the coaxial connector 40a is screwed into the coaxial connector 33a, the micro switch 32d is in the off state, and the control unit 32b supplies power to the power supply unit 32e and the outdoor device 21 via the superposition device 33. To perform. On the other hand, when the coaxial connector 40a is removed from the coaxial connector 33a in order to connect a measuring device to the coaxial connector 33a of the superposition device 33 and perform various investigations and adjustments, the micro switch 32d turns on and the control unit 32b turns into the power supply unit 32e. The power supply to the outdoor device 21 is stopped.

In this way, the DC power supplied to the output end of the superimposing device 33 is cut off by simply removing the coaxial connector 40a.
Even if the measuring device is connected to 3a, a DC voltage is not applied to the measuring device and damage to the measuring device can be prevented.

9 and 10 are views showing a seventh embodiment. Since the configuration of the seventh embodiment is basically the same as that of the sixth embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

In the seventh embodiment, a flat plate pressing metal fitting 74 is used instead of the pressing metal fitting 73 of the sixth embodiment. That is, as shown in FIG. 10, there is a gap 75 between the coaxial connector 40a (plug) and the coaxial connector 33a (receptacle) even in a screwed state. This gap is provided in order to ensure the connection of the inner conductor by not closely contacting the outer casing of the coaxial connector. A push metal fitting 74 of a plate that is slightly thinner than this gap 75,
Insert into the gap 75. As a result, similarly to the sixth embodiment, while the coaxial connector 40a is screwed into the coaxial connector 33a, the micro switch 32d is turned off, and the coaxial connector 40a is detached from the coaxial connector 33a. 32d is turned on. Other operations are the same as in the sixth embodiment.

Next, an eighth embodiment will be described. The eighth embodiment is basically the same as the configuration shown in FIG.
Since the structure of the indoor device is slightly different, it will be described with reference to FIG.

FIG. 11 is a block diagram showing the structure of an indoor unit according to the eighth embodiment. In the figure, the same parts as those of the configuration shown in FIG. In the eighth embodiment, a conduction indicator 77a is further added to the superimposing device 77 having the same configuration as the superimposing device 33 shown in FIG. A DC current for the outdoor device 20 is supplied from the power supply unit 76 to the superimposing device 77, and a composite signal is sent from the IDU transmitting / receiving device 31, and the superimposing device 77 superimposes them and outputs them to the coaxial cable 40. . Power indicator 77a
Is connected to the output terminal of the power supply unit 76. Therefore, when the power supply unit 76 is supplying power to the superposition device 77, the energization indicator 77a is turned on.

Thus, when a measuring instrument is connected to the output end of the superimposing device 77 and various investigations and adjustments are performed, it is possible to confirm that the current indicator 77a is off before connecting the measuring instrument.
A DC voltage is not applied to the measuring device from the output end of the superposing device 77, and the measuring device can be prevented from being damaged.

In the eighth embodiment, the electricity indicator 77
The lighting of a prompted the operator to be careful when connecting the measuring device to the output end of the superimposing device 77. However, without providing such a power indicator 77a, simply disconnect the breaker switch of the power supply unit when removing the coaxial cable. A precautionary statement urging the user to shut off may be attached to a place visible to an operator when the coaxial cable is removed or the measuring instrument is connected.

FIG. 12 is a diagram showing the configuration of the ninth embodiment. The ninth embodiment controls the output of a power supply unit for ODU by utilizing a pilot signal or a telemetry signal transmitted from a satellite in satellite communication.

In the figure, the geostationary satellite 80 and the parabona antenna 81 of the ground station transmit and receive radio waves, and the ground station operates the antenna 8
1, an outdoor unit (ODU) 82, and an indoor unit (IDU) 84 connected to the outdoor unit 82 via a coaxial cable 83. The configuration of the outdoor device 82 is shown in FIG.
The outdoor device 20 shown in FIG.

The indoor unit 84 is an IDU transmitter / receiver 85.
And an ODU power supply unit 86 and a superposition device 87. The ODU power supply unit 86 is a DC power supply device for supplying a DC current to the outdoor device 82, and the superimposing device 87 has the same configuration as the superimposing device 33 shown in FIG. The IDU transmitter / receiver 85 has the same configuration as the IDU transmitter / receiver 31 shown in FIG.
Control unit 8 for controlling output of U power supply unit 86
5a. The control unit 85a first always detects the pilot signal or the telemetry signal included in the signal sent from the satellite 80. Then, while the pilot signal or the telemetry signal is detected, the ODU power supply unit 86 is caused to supply the direct current to the superimposing device 87 via the coaxial cable 83, and the pilot signal or the telemetry signal is detected. When it disappears, a period during which it is not detected is measured, and when the period exceeds a predetermined time (for example, 5 seconds), the ODU power supply unit 86 stops the direct current supply to the superposition device 87.

That is, the pilot signal or the telemetry signal is a signal that is always transmitted from the satellite 80 to the ground station, but in the case where these signals do not reach the ground station, switching to a backup device is performed inside the satellite. Is performed (in this case, the communication is interrupted for up to about several tens of msec), or an obstacle such as an airplane passes through the communication path (in this case, the communication is interrupted for up to about 2 seconds). On the other hand, when connecting the measuring device to the output end of the superposing device 87, the time required to disconnect the coaxial cable 83 from the superposing device 87 and connect the measuring device is at least about 10 seconds. Therefore,
For example, when the pilot signal or the telemetry signal is not detected for 5 seconds, it may be determined that the coaxial cable 83 is disconnected from the superposition device 87. In such a case, the control unit 85a causes the ODU power supply unit to operate. At 86, the direct current supply to the superposition device 87 is stopped.

Thus, when the measuring device is connected to the output end of the superimposing device 87 to perform various investigations and adjustments, the superimposing device 8
No DC voltage is applied to the measuring instrument from the output terminal of 7.
Prevents damage to measuring instruments.

In each of the above embodiments, the case where the present invention is applied to a satellite communication system has been described. However, the present invention is a technique applicable to all transmitters / receivers divided into an outdoor unit and an indoor unit. is there.

[0047]

As described above, in the present invention, for example, the amount of current from the power supply device to the superimposing device is detected, and the operation of the power supply device is controlled according to this amount of current. This prevents the current supply from the power supply device from being reliably cut off and destroying the measuring device when the coaxial cable connected to the output end of the superimposing device is removed and the measuring device is connected to the output end. is doing.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the internal configuration of a power supply device for ODU.

FIG. 2 is a block diagram showing an overall configuration of an earth station transceiver device including a power supply device for an outdoor communication device according to the present invention.

FIG. 3 is a block diagram showing a second embodiment of the internal configuration of the ODU power supply device.

FIG. 4 is a configuration diagram of a third embodiment.

FIG. 5 is a configuration diagram of a fourth embodiment.

FIG. 6 is a configuration diagram of a fifth embodiment.

FIG. 7 is a diagram showing an installation position of a micro switch.

FIG. 8 is a configuration diagram of a sixth embodiment.

FIG. 9 is a configuration diagram of a seventh embodiment.

FIG. 10 is a sectional view of a coaxial connector.

FIG. 11 is a configuration diagram of an eighth embodiment.

FIG. 12 is a configuration diagram of a ninth embodiment.

FIG. 13 is an overall configuration diagram of a conventional transmission / reception device.

FIG. 14 is an overall configuration diagram of a conventional transmission / reception device.

[Explanation of Codes] 10 Parabona Antenna 20 Outdoor Device 21 ODU Transmitter / Receiver Device 22 ODU Power Supply Device 23 Separation Device 30 Outdoor Device 31 IDU Transmitter / Receiver Device 32 ODU Power Supply Device 33 Superposition Device 40 Coaxial Cable 51 Power Supply Unit 52 Current Amount Detection Circuit 53 Controller unit

Claims (10)

[Claims] 1. A power supply device for supplying power to an outdoor device in a transmitter / receiver device comprising an outdoor device and an indoor device, the power supply being a power source for the outdoor device (20), which is installed on the indoor device (30) side. Means (51) and the power supply means (51) installed on the indoor device (30) side
Means for superimposing the current from the indoor unit and the signal from the indoor transmitter / receiver unit (31) to the outdoor unit (20) (33)
A current amount detecting means (52) for detecting a current amount from the power source means (51) to the superimposing means (33); and the power source according to the current amount detected by the current amount detecting means (52). A power supply control means (53) for controlling the operation of the means (51), and a power supply device for an outdoor communication device. 2. The power supply control means (53) causes the power supply means (51) to superimpose means (33) when the amount of current detected by the current amount detection means (52) falls below a predetermined value. The power supply device for the outdoor communication device according to claim 1, wherein the current supply to the outdoor communication device is stopped. 3. A power supply device for supplying power to an outdoor device in a transmitter / receiver device comprising an outdoor device and an indoor device, the power supply being a power source for the outdoor device (20), which is installed on the indoor device (30) side. Means (54) and the power supply means (54) installed on the indoor unit (30) side
Means for superimposing the current from the indoor unit and the signal from the indoor transmitter / receiver unit (31) to the outdoor unit (20) (33)
A current amount detecting means (55) for detecting a current amount from the power source means (54) to the superimposing means (33), and an alarm according to the current amount detected by the current amount detecting means (55). An alarm generating means (56) for generating, and a power supply device for an outdoor communication device, comprising: 4. The alarm generating means (56) generates an alarm sound when the amount of current detected by the current amount detecting means (55) falls below a predetermined value. Power supply device for outdoor communication devices. 5. A power supply device for supplying power to an outdoor device in a transmitter / receiver device comprising an outdoor device and an indoor device, the power source being a power supply for an outdoor device (67), which is installed on the indoor device (60) side. Means (62) and the power supply means (62) installed on the indoor device (60) side
First superimposing means (6) for superimposing the current from the indoor side transmitter / receiver (61) and transmitting the superimposed signal to the outdoor device (67).
3), a predetermined signal generating means (71) installed on the side of the outdoor device (67) and generating a predetermined signal, and a predetermined signal installed on the side of the outdoor device (67) and generated by the predetermined signal generating means (71). Signal and outdoor side transmitter / receiver (6
Second superimposing means (70) for superimposing the signal from 8) on to the indoor unit (60) and the second superimposing means (70) installed on the indoor unit (60) side. Separation means (63) for separating the predetermined signal from a signal, and power supply control means (64, 65) for controlling the operation of the power supply means (62) based on the predetermined signal separated by the separation means (63). And a power supply device for an outdoor communication device. 6. The predetermined signal generating means (71) is composed of a battery, the predetermined signal is a predetermined DC voltage value, and the power supply control means (64, 65) receives the predetermined DC voltage value. The power supply device for an outdoor communication device according to claim 5, wherein the power supply means (62) stops the current supply to the first superimposing means (63) when not performed. 7. A power supply device for supplying power to an outdoor device in a transmission / reception device comprising an outdoor device and an indoor device, comprising: a power supply for an outdoor device (20) installed in an indoor device package (30a). Is installed in the indoor device package (30a), and the current from the power supply means (32e) and the signal from the indoor transmitter / receiver device (31) are superimposed on each other to provide the outdoor device ( 20) and a switch (33) installed near the cover (30c) on the indoor device package (30a) that is removed for maintenance, and the state of which changes when the cover (30c) is removed. 32a), and a power supply control means (32b) that causes the power supply means (32e) to stop the current supply to the superimposing means (33) according to the output of the switch (32a). When, power supply to the outdoor communication device characterized in that it comprises a. 8. A power supply device for supplying power to an outdoor device in a transmitter / receiver device comprising an outdoor device and an indoor device, the power supply being a power source for the outdoor device (20), which is installed on the indoor device (30) side. Means (32e) and the power supply means (3) installed on the indoor device (30) side.
Superimposing means (33) for superimposing the current from 2e) and the signal from the indoor transmitter / receiver (31) and sending it to the outdoor device (20) via one coaxial cable (40); A switch (32d) installed in a housing for (33), the state of which is changed by removing the coaxial cable (40) from the superimposing means (33); and the power supply according to the output of the switch (32d). A power supply control means (32b) for stopping the current supply to the superposition means (33) in the means (32e), and a power supply device for an outdoor communication device. 9. A power supply device for supplying power to an outdoor device in a transmitter / receiver device comprising an outdoor device and an indoor device, and a power supply means (76) installed on the indoor device side and serving as a power supply for the outdoor device. Superimposing means (77) installed on the indoor device side for superimposing a current from the power supply means (76) and a signal from the indoor transmitting / receiving device (31) to send to the outdoor device, the power supply means (76) To an output terminal of the power supply means (76) for indicating that current is being supplied from the power supply means (76) to the superimposing means (77), and an outdoor communication device comprising: Power supply device. 10. A power supply device for supplying power to an outdoor device in a transmitting / receiving device for satellite communication comprising an outdoor device and an indoor device, the power supply device for an outdoor device (82) installed on the indoor device (84) side. A power supply means (86) to be a power supply and the power supply means (86) installed on the indoor unit (84) side
Means (87) for superimposing the current from the indoor side transmitter / receiver device (85) and sending it to the outdoor device (82)
A signal detecting means (85a) installed on the indoor unit (84) side for detecting a pilot signal or a telemetry signal sent from a satellite (80); and the signal detecting means (85a) for the pilot signal or the telemetry signal. The superimposing means (87) is added to the power supply means (86) when a period in which no signal is detected reaches a predetermined time.
A power supply control means (85a) for stopping the current supply to the outdoor communication device.