JP3098456B2 - Phantom power supply health check method for wireless base station equipment - Google Patents

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 present invention, a health check method for a radio base station apparatus includes a fan during a local power supply operation.
It has a function to periodically test the normality of the
The phantom power supply operation when the local power supply fails.
In radio base station equipment that continues to operate after switching,
Local power and phantom power
During power supply, the local power supply status is held preferentially and the local power
Input voltage is selected and output, and the local power input stops.
Selects and outputs the input voltage of the phantom power supply
A first power supply switching unit and the first power supply switching unit selected
Inputting the local power supply voltage to be output to the radio base station
Power supply unit for local power supply for generating operating voltage of station equipment
And the fan selectively output by the first power supply switching means.
Equivalent to the phantom power supply voltage or the phantom power supply voltage
Input the voltage and operate the same as the local power supply.
Phantom power supply for generating operating voltage of the wireless base station device
Power supply device and the first power supply switching means selectively outputs
Input the local power supply voltage and input the phantom power supply
Boosting means for generating a voltage equivalent to the pressure,
Operation of the wireless base station device generated and output by the power supply device
The voltage is compared with a preset threshold value and the phantom is
Determines the normality of the power supply unit and sends the result
Before the determination means and the first power supply switching means selectively output
The phantom power supply voltage and the output of the booster
Select and output one of the voltages corresponding to the phantom power supply voltage.
Input to the power supply for phantom power supply,
The wireless base station device output by a power supply device for phantom power supply
The operating voltage of the wireless base station device and the determining means.
A second power supply switching means for selectively outputting to the shifter;
When local power supply status information is received from the power supply switching means
Sending the test control information for a predetermined period of time and
Controlling said stage and said phantom generated and output by said boosting means.
A power supply for supplying power to the phantom
And the phantom power supply unit generates and outputs
Inputting the operating voltage of the radio base station apparatus to the determination means.
And execute a normality test of the power supply device for supplying power to the phantom.
And a control unit for instructing .

In addition, the above-mentioned setting which is previously set in the determining means
The threshold value is an allowable voltage at which the wireless base station device operates normally.
It is characterized by being a range .

[0011] Further, the judging means includes a phantom power supply.
Operation of the wireless base station device generated and output by the power supply device
Phantom power supply operation when the voltage is within the threshold range
Phantom power when available information is out of the threshold range
It is characterized by sending and displaying operation impossible information .

Further, the power supply voltage of the local power supply is
DC voltage equal to the input voltage of the local power supply
It is characterized by being.

Further, the local power supply is a commercial power supply.
When equal to the input voltage of the local power supply
An AC / DC converter that generates and outputs a DC voltage .

[0014]

[0015]

[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 the local power supply terminal and converted by the AC adapter and a phantom power supply connected to the 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 the 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, when 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, 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 operating 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]

 REFERENCE SIGNS LIST 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 Phantom power supply DC / DC converter 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 (5)

(57) [Claims] 1. A radio base station apparatus having a function of periodically testing the normality of a phantom power supply system during a local power supply operation, and switching to the phantom power supply operation and continuing operation when a local power supply fails. Input the local power supply and the phantom power supply, preferentially hold the local power supply state during the local power supply input, select and output the input voltage of the local power supply, and select the input voltage of the phantom power supply when the local power supply is stopped A first power supply switching unit for outputting, a local power supply device for inputting the local power supply voltage selectively output by the first power supply switching unit to generate an operation voltage of the wireless base station device,
A phantom power supply voltage which is selectively output by the power supply switching means or a voltage corresponding to the phantom power supply voltage, and generates an operating voltage of the wireless base station apparatus in the same manner as the local power supply power supply. Step-up means for inputting the local power supply voltage selectively output by the first power supply switching means to generate a voltage corresponding to the phantom power supply voltage; and the radio base station apparatus generated and output by the phantom power supply power supply apparatus Comparing the operating voltage of the phantom power supply device with a preset threshold value to determine the normality of the phantom power supply power supply device, and transmitting a determination result; and the phantom power supply selectively output by the first power supply switching device. A phantom power supply device for selectively outputting any one of a voltage and a voltage corresponding to the phantom power supply voltage output by the booster. A second power supply switching unit for inputting and selectively outputting an 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 Upon receiving the local power supply state information from the power supply switching means, test control information is transmitted for a predetermined time to control the second power supply switching means, and the voltage corresponding to the phantom power supply voltage generated and output by the boosting means is supplied to the phantom power supply. A control unit for inputting the operating voltage of the radio base station apparatus generated and output by the phantom power supply power supply device to the determination unit and instructing the phantom power supply power supply device to execute a normality test of the phantom power supply power supply device. A phantom power supply health check method for a wireless base station device, comprising: 2. The phantom power supply health of a wireless base station device according to claim 1, 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. 3. 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. 2. The phantom power supply health check method for a wireless base station device according to claim 1, wherein the phantom power supply operation disable information is transmitted and displayed when the information is out of the range. 4. A power supply voltage of the local power supply, health check method of a wireless base station apparatus according to claim 1, wherein the the input voltage is equal DC voltage of the local power supply power supply. Wherein when said Local power is a commercial power source, the radio base according to claim 1, characterized in that it has an AC / DC converter for generating and outputting an input voltage equal to the DC voltage of the local power supply power supply Station device health check method.