JPH10336917A - Phantom-feed health checking system installed at radio base station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a health checking system installed at radio base station which tests the normality of the power source of a phantom feed system in a prescribed period while local feeding is made. SOLUTION: A control section 10 periodically controls a second feeding switching circuit 8 while local feed operation is made, and inputs the voltage corresponding to a phantom power supply voltage generated by means of a boosting circuit 9 to a DC/DC converter 6 for phantom-feed, and the then voltage outputted from the convert 6 is inputted to a discrimination circuit 11. The circuit 11 compares the output voltage of the converter 6 with a preset threshold and, when the compared result falls within the range of the threshold displays phantom-feed operation enable information on a display device. When the compared result does not fall within the range, the circuit 11 displays phantom-fed operation disable information on the display device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phantom power supply health check system for a radio base station apparatus, and more particularly, to a local power supply DC / DC converter and a phantom power supply DC / DC converter.
The present invention relates to a phantom-powered health check method in a wireless base station device having a DC converter.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, this type of radio base station apparatus can be operated by receiving power supplied from two systems of local power supply and phantom power supply.

In this way, a local power supply, for example, a commercial power supply (AC 100 V) is connected to the local power supply terminal 1,
A phantom power supply such as D
C48V, and supplies power to the DC / DC converter for local power supply 5 and the DC / DC converter 6 for phantom power supply via the first power supply switching circuit 4, respectively.
The voltage is converted into the operating voltage of the wireless base station by the converter and output to the load circuit 7.

[0004] As described above, in a wireless base station apparatus that can operate by receiving power supplied from two systems of local power supply and phantom power supply, in the case of local power supply, the first power supply switching circuit 4 is connected to the local power supply terminal 1. For example, the DC 100 converted into a predetermined DC voltage by the AC adapter 3, for example, DC 15 V, is selected and input to the local power supply DC / DC converter 5.

The first power supply switching circuit 4 includes an AC adapter 3
In the case of local power supply, that is, when the output voltage of the AC adapter 3 is present, a current flows through the exciting coil RL4-1 of the relay.
-1a is closed, the DC output voltage of the AC adapter 3 is connected to the DC / DC converter 5 for local power supply, and when there is no output voltage of the AC adapter 3, the excitation coil RL4 of the relay is connected.
-1 is interrupted, so that the contact 4-
1a is released, the contact 4-1b of the relay is closed, and the phantom power supply connected to the phantom power supply terminal 2 is connected to the phantom power supply DC / DC converter 6 instead of the local power supply.

The local power supply DC / DC converter 5 and the phantom power supply DC / DC converter 6 are each converted into a predetermined operating voltage and supplied to the load circuit 7 to operate the radio base station apparatus.

[0007]

The above-mentioned conventional radio base station apparatus does not have an operation check function of the phantom power supply DC / DC converter when the local power supply is used as a master and the phantom power supply is operated as a slave. When the local power supply stops due to some failure and switches from local power supply to phantom power supply,
If the phantom power supply DC / DC converter is out of order, the wireless base station device becomes inoperable and may cause a system disconnection.

It is an object of the present invention to provide a health check method of a radio base station apparatus for testing the normality of a phantom power supply system power supply at a predetermined cycle during local power supply.

[0009]

According to the health check method of a radio base station apparatus of the present invention, when a local power supply fails during a local power supply operation, the radio base station apparatus switches to a phantom power supply operation and continues the operation. Phantom power supply system testing means for testing the normality of the phantom power supply system during the local power supply operation.

The normality test of the phantom power supply system by the phantom power supply system test means is periodically performed.

Also, a local power supply and a phantom power supply are input, and while the local power supply is being input, the local power supply state is preferentially held to selectively output the input voltage of the local power supply. When the local power supply is stopped, the phantom power supply is turned off. A first power supply switching means for selectively outputting an input voltage; a local power supply power supply for receiving the local power supply voltage selectively output by the first power supply switching means and generating an operating voltage for the wireless base station apparatus; A phantom for inputting the phantom power supply voltage selected by the first power supply switching means or a voltage corresponding to the phantom power supply voltage and generating an operating voltage of the wireless base station apparatus in the same manner as the local power supply power supply apparatus A power supply power supply device, and the local power supply voltage selectively output by the first power supply switching means. Boosting means for generating a voltage corresponding to a source voltage; and comparing the operating voltage of the radio base station apparatus generated and output by the phantom power supply power supply with a preset threshold value to determine whether the phantom power supply power supply has normality. Determining means for transmitting a determination result; and selectively outputting any one of the phantom power supply voltage selectively output by the first power supply switching means and the voltage corresponding to the phantom power supply voltage output by the boosting means. A second power supply switch that inputs the phantom power supply device and selectively outputs the operating voltage of the wireless base station device output from the phantom power supply device to either the wireless base station device or the determination unit. Means for controlling the second power supply switching means by transmitting test control information for a predetermined time when receiving local power supply state information from the first power supply switching means. A voltage corresponding to the phantom power supply voltage generated and output by the boosting means is input to the phantom power supply power supply device, and an operating voltage of the wireless base station device generated and output by the phantom power supply power supply is input to the determination means. A control unit for instructing execution of a normality test of the phantom power supply power supply device.

Further, the threshold value preset in the determination means is an allowable voltage range in which the wireless base station device operates normally.

[0013] Further, the determining means, when the operating voltage of the wireless base station device generated and output by the phantom power supply power supply is within the range of the threshold value, outputs the phantom power supply operation enable information to the threshold value. When the value is out of the range, phantom power supply operation disable information is transmitted and displayed.

The power supply voltage of the local power supply is a DC voltage equal to the input voltage of the local power supply.

Further, when the local power supply is a commercial power supply, an AC / DC converter for generating and outputting a DC voltage equal to an input voltage of the local power supply device is provided.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a power supply unit in a radio base station apparatus according to the present invention.

The radio base station apparatus of the present invention shown in FIG. 1 includes a local power supply terminal 1, a phantom power supply terminal 2, an AC adapter 3 for converting a commercial power supply connected to the local power supply terminal 1 into a predetermined DC voltage. A first power supply switching circuit 4 for selectively outputting a DC voltage connected to a local power supply terminal and converted by an AC adapter and a phantom power supply connected to a phantom power supply terminal 2; DC / DC for local power supply which inputs a DC output voltage (local power supply) of the adapter, converts the voltage into a predetermined DC voltage, and outputs the DC voltage to the load circuit 7 as an operating voltage of the radio base station apparatus
Converter 5, a booster circuit 9 for boosting the input voltage of the DC / DC converter for local power supply to a phantom power supply voltage level, a phantom power supply voltage input via a first power supply switching circuit, and a phantom power supply voltage output by the booster circuit DC / DC for phantom power supply
DC / D for input to DC converter and phantom power supply
A second power supply switching circuit 8 for selectively outputting the operating voltage of the wireless base station device output from the C converter to the load circuit or the determination circuit 11, and a control signal (test control signal) for the second power supply switching circuit periodically. The phantom power supply voltage input through the control unit 10 for output and the first power supply switching circuit selectively output by the second power supply switching circuit or the voltage output from the AC adapter via the first power supply switching circuit is boosted. A phantom power supply DC / DC converter 6 that inputs a voltage corresponding to the phantom power supply voltage boosted by the circuit, converts the voltage to a predetermined voltage, and outputs the voltage to the load circuit 7 as an operating voltage of the wireless base station device;
A load circuit 7 that operates with the output voltage of the local power supply DC / DC converter or the phantom power supply DC / DC converter, and monitors the output voltage of the phantom power supply DC / DC converter to check the normality of the phantom power supply DC / DC converter. A determination circuit 11 for making a determination and outputting the determination result to a display unit (not shown).

Next, the operation will be described with reference to FIG. The load circuit 7 means all circuits in the wireless base station apparatus except for the power supply unit, and operates with the output voltage of either the phantom power supply DC / DC converter 6 or the local power supply DC / DC converter 5. Therefore, the phantom power supply DC / DC converter 6 and the local power supply D
The output voltage values of C / DC converter 5 are equal.

Here, suppose that the phantom power supply voltage connected to the phantom power supply terminal 2 is +48 V DC, the local power supply voltage connected to the local power supply terminal 1 is 100 V AC,
The DC voltage converted and output by the AC adapter 3 is DC + 15
V, the voltage converted and output by the phantom power supply DC / DC converter 6 and the local power supply DC / DC converter 5 is DC + 10V.

AC10 connected to local power supply terminal 1
The commercial power of 0 V is converted into DC 15 V by the AC adapter 3 and input to the first power supply switching circuit 4. The first power supply switching circuit 4 is formed of, for example, a relay, and the exciting coil RL4-1 of the relay always outputs the output voltage DC15 of the AC adapter 3.
Connected to V.

Therefore, while the commercial power supply is connected to the local power supply terminal 1, the contact 4-1a of the relay is closed,
The output voltage DC15V of the AC adapter 3 is connected to the DC / DC converter 5 for local power supply. On the other hand, the contacts 4-1b and 4-1c of the relay are released, the phantom power supply connected to the phantom power supply terminal 2 is cut off by the contact 4-1b of the relay, and the contact 4-1c of the relay is opened.
Information indicating that the local power is being supplied by the control unit 10
Send to

DC / DC converter for local power supply 5
Input 15 V DC output from the AC adapter 3 through the contact point 4-1a of the relay of the first power supply switching circuit 4, and
10 V is supplied as an operating voltage to the load circuit 7, and the radio base station apparatus continues normal operation as long as the input of AC 100V of the commercial power does not occur.

In this state, if the input of 100 V AC connected to the local power supply terminal 1 is cut off due to a fault such as a lightning strike or a disconnection, for example, the output voltage DC 15 V of the AC adapter 3 changes to 0 V and the first power supply switching circuit Contact point 4-1 of relay
a is released, the contacts 4-1b and 4-1c of the relay are closed, and the DC 48 V of the phantom power supply connected to the phantom power supply terminal 2 via the contact 4-1b of the relay is closed.
Is a phantom power supply DC through the second power supply switching circuit 8.
/ DC converter 6 and the load circuit 7 outputs DC1 output from the phantom power supply DC / DC converter 6.
It operates continuously at 0V.

As described above, when a failure occurs in the local power supply due to a lightning strike, a disconnection, or the like, the phantom power supply system must always be in a normal operation state in order to promptly switch to the phantom power supply and continuously operate the wireless base station apparatus. . Therefore, a health check of the phantom power supply system is required.

During the local power supply operation, since the exciting coil RL4-1 of the relay of the first power supply switching circuit 4 is energized, the contact 4-1c of the relay is closed and the local power supply to the control unit 10 is being performed. Information is being sent.

When the control unit 10 receives the information indicating that the local power supply is being supplied from the first power supply switching circuit 4, the control unit 10 controls the second power supply switching circuit 8.
The second power supply switching circuit 8 is controlled by transmitting test control information for confirming the operation of the phantom power supply system to the second power supply switching circuit 8, and the contact 8-1a of the switch is moved from the first power supply switching circuit 4 side to the booster circuit 9 side. To the load circuit 7
The switching circuit is connected to the determination circuit 11 only for a predetermined time.

The control unit 10 is connected to the first power supply switching circuit 4.
After transmitting the test control information for a predetermined time in response to the local power supply information received first from the server, a timer (not shown) for counting, for example, a predetermined time is started, and thereafter, the test control information of the phantom power supply system is repeated by the timer. Generate. Accordingly, the second power supply switching circuit 8 repeats the normality test of the phantom power supply DC / DC converter in response to the repeatedly transmitted test control information.

The booster circuit 9 boosts the output voltage DC15V of the AC adapter 3 supplied to the local power supply DC / DC converter 5 through the contact 4-1a of the relay of the first power supply switching circuit 4 to DC48V, Boosted DC48
V is a phantom power supply DC through a contact 8-1 a of a switch of the second power supply switching circuit 8 instead of the phantom power supply.
/ DC input to DC / DC converter 6 and DC for phantom power supply
/ DC converter 6 outputs DC10V.

The DC 10 V output from the phantom power supply DC / DC converter 6 is connected to the determination circuit 11 via the switch contact 8-1b of the second power supply switching circuit 8, and the determination circuit 11 is connected to the phantom power supply. DC 10V output from the DC / DC converter 6 is compared with a predetermined threshold value (permissible voltage range in which the load circuit 7 normally operates) to confirm the normality of the DC / DC converter 6 for phantom power supply, and a determination result If the value is within the allowable voltage range, phantom power supply operation enable information is transmitted to a display unit (not shown) and displayed if the value is outside the allowable voltage range.

The judgment circuit 11 is provided with a load (not shown) equivalent to the load circuit 7, and the phantom power supply DC / DC converter is connected to the load with the output voltage DC10V of the phantom power supply DC / DC converter. It is assumed that the normality of the converter 6 is determined.

As described above, while the radio base station apparatus is in the local power supply operation state, the operation check of the phantom power supply DC / DC converter 6 is repeated at a predetermined cycle to prepare for the phantom power supply operation when the local power supply fails.

[0033]

As described above, according to the present invention, the local power supply and the phantom power supply are input, and the local power supply state is preferentially held during the local power supply input to selectively output the input voltage of the local power supply. A first power supply switching circuit for selectively outputting an input voltage of a phantom power supply when stopped, and a local power supply for inputting a local power supply voltage selectively output by the first power supply switching circuit to generate an operating voltage of the wireless base station apparatus A DC / DC converter and a phantom power supply voltage selected by the first power supply switching circuit or a voltage corresponding to the phantom power supply voltage are input to the local power supply D.
A phantom power supply DC / DC converter for generating an operating voltage of the wireless base station device in the same manner as the C / DC converter;
A booster circuit for generating a voltage corresponding to a phantom power supply voltage by inputting a local power supply voltage selected and output by the first power supply switching circuit, and an operating voltage of the wireless base station apparatus generated and output by the phantom power supply DC / DC converter in advance. A judgment circuit for judging the normality of the DC / DC converter for phantom power supply by comparing with a set threshold value, and transmitting a judgment result; a phantom power supply voltage selectively output by the first power supply switching circuit; And outputs the selected voltage to the phantom power supply DC / DC converter, and supplies the phantom power to the DC / DC converter.
A second power supply switching circuit for selectively outputting the operating voltage of the wireless base station device output from the converter to one of the wireless base station device and the determination circuit; and a test when receiving local power supply state information from the first power supply switching circuit. The control information is transmitted for a predetermined time to control the second power supply switching circuit, and the voltage corresponding to the phantom power supply voltage generated and output by the booster circuit is supplied to the phantom power supply DC.
/ DC converter, DC / D for phantom power supply
A control unit for inputting an operating voltage of the radio base station device generated and output by the C converter to a determination circuit and instructing execution of a normality test of the DC / DC converter for phantom power supply, and a phantom power supply system during local power supply operation. The normal operation of the power supply is periodically checked repeatedly to prepare for a failure of the local power supply, so that maintenance of the DC / DC converter for phantom power supply can be performed using the results of the normality test, and the locality caused by lightning strikes, disconnections, etc. When switching to phantom power supply operation in the event of a power failure, the phantom power supply DC
The system disconnection due to the failure of the / DC converter can be prevented.

Further, since the health check of the phantom power supply system is periodically performed during the local power supply operation, there is an advantage that the continuous operation of the system is improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an embodiment of a power supply unit in a wireless base station device of the present invention.

FIG. 2 is a configuration diagram of a power supply unit in a conventional wireless base station device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Local power supply terminal 2 Phantom power supply terminal 3 AC adapter 4 First power supply switching circuit 4-1 Exciting coil of relay 4-1a Contact of relay 4-1b Contact of relay 4-1c Contact of relay 5 DC / DC for local power supply Converter 6 DC / DC converter for phantom power supply 7 Load circuit 8 Second power supply switching circuit 8-1a Switch contact 8-1b Switch contact 9 Boost circuit 10 Control unit 11 Judgment circuit

Claims (7)

[Claims] 1. A phantom for testing the normality of a phantom power supply system during a local power supply operation in a wireless base station apparatus that switches to a phantom power supply operation and continues operation when a local power supply fails during the local power supply operation. A phantom power supply health check method for a wireless base station device, comprising power supply system test means. 2. The phantom power supply health check method for a radio base station apparatus according to claim 1, wherein the phantom power supply system test means is periodically tested for the normality of the phantom power supply system. 3. A local power supply and a phantom power supply are inputted, a local power supply state is preferentially held during the local power supply input, and an input voltage of the local power supply is selectively output. When the local power supply is stopped, the phantom power supply is turned off. A first power supply switching unit that selectively outputs an input voltage; a local power supply power unit that receives the local power supply voltage that is selectively output by the first power supply switching unit and generates an operating voltage of the wireless base station device; A phantom for inputting the phantom power supply voltage selected by the first power supply switching means or a voltage corresponding to the phantom power supply voltage to generate an operating voltage of the wireless base station apparatus in the same manner as the local power supply power supply apparatus A power supply device for power supply; and a phantom power supply for receiving the local power supply voltage selected and output by the first power supply switching means. Boosting means for generating a voltage corresponding to the pressure, and comparing the operating voltage of the radio base station apparatus generated and output by the phantom power supply power supply with a preset threshold to determine the normality of the phantom power supply power supply. A determining unit for determining and transmitting a determination result; selecting and outputting any one of the phantom power supply voltage selectively output by the first power supply switching unit and the voltage corresponding to the phantom power supply voltage output by the boosting unit; A second power supply switching unit that inputs to the phantom power supply power supply device and selectively outputs the operating voltage of the wireless base station device output from the phantom power supply power supply device to one of the wireless base station device and the determination unit And transmitting the test control information for a predetermined time when receiving the local power supply state information from the first power supply switching means to control the second power supply switching means. A voltage corresponding to the phantom power supply voltage generated and output by the booster is input to the phantom power supply power supply device, and an operating voltage of the wireless base station device generated and output by the phantom power supply power supply is input to the determination means. 2. The phantom power supply health check method for a wireless base station device according to claim 1, further comprising: a control unit that instructs execution of a normality test of the phantom power supply power supply device. 4. The phantom power supply health of a wireless base station device according to claim 3, wherein said threshold value preset in said determination means is an allowable voltage range in which said wireless base station device operates normally. Check method. 5. The phantom power supply operation enable information when the operating voltage of the wireless base station device generated and output by the phantom power supply power supply device is within the range of the threshold value. 4. The phantom power supply health check method for a wireless base station device according to claim 3, wherein the phantom power supply operation disable information is transmitted and displayed when the value is out of the range. 6. The system according to claim 3, wherein a power supply voltage of the local power supply is a DC voltage equal to an input voltage of the power supply apparatus for local power supply. 7. The radio base station according to claim 3, further comprising an AC / DC converter that generates and outputs a DC voltage equal to an input voltage of the power supply device for local power supply when the local power supply is a commercial power supply. Station device health check method.