KR100323592B1 - Apparatus for supplying power in WLL RIU - Google Patents

Abstract

The power supply device in the wireless subscriber matching system according to the present invention uses a main power for many electrical appliances used in everyday life or industrial sites, and various unexpected cases such as power failure or power cable failure. When the main power is not supplied due to the, there are many that are supplied from the auxiliary power battery. In some cases, appropriate measures must be taken before the auxiliary power battery is discharged and the device becomes inoperable. When the main power does not operate like this, by standardizing the structure and control operation of a power module suitable for use with a device operating as a battery for auxiliary power, the product development is made by unifying the structure of a power module implemented in a different form in each case. And to simplify modification and change, and to reduce all costs related to development.

Description

Power supply in wireless subscriber matching system {Apparatus for supplying power in WLL RIU}

The present invention relates to a power supply module of a radio interface unit (RIU) of a wireless local loop (WLL). In particular, the main power supply (AC power) is disconnected during power outage or power cable disconnection during the operation of the subscriber matching device. When not in operation, standardize the structure and control operation of the power module operated by the auxiliary power battery, and in order to simplify the development and modification of the product by unifying the structure of the power module implemented in different forms in each case It relates to a power supply of a system.

In case of electric appliances used in daily life or many electric appliances used in industrial field, when main power is not supplied due to various unexpected cases such as power failure or power cable failure, There are many that are powered.

In some cases, appropriate measures must be taken before the auxiliary power battery is discharged and the device becomes inoperable.

When the main power does not operate in this way, research is being conducted to standardize the structure and control operation of a power module suitable for use in a device operated by an auxiliary power battery.

Such power supply circuits often have the same circuit operating mechanism and the same definition of input / output signals used in the circuit. Nevertheless, the conventional power supply circuit has a problem in that additional costs are generated in design and development by implementing the circuit in each case in a separate form and separately present the functional blocks.

Accordingly, the present invention has been made to solve the above-described problems according to the prior art, and an object of the present invention is to define an operation function and a control signal of a power supply module to unify its structure and to integrate a circuit divided into several blocks. In addition, the present invention provides a power supply unit in a wireless subscriber matching system that simplifies the development and modification of a product and reduces all costs associated with development.

A characteristic of the power supply device in the wireless subscriber matching system according to the present invention for achieving the above object is that in the power supply of the wireless subscriber matching system having an auxiliary power battery and a power switch, the AC power input is any After converting to a DC voltage having a level, a power source for charging the converted DC voltage battery, and selectively outputs the converted DC voltage or the DC voltage charged in the battery as a source power DC voltage according to whether the AC power is input. An input unit; a) operates according to the source power DC voltage output from the power source input unit, and b) generates an AC_OK signal for determining whether to apply AC power according to the AC / DC converted DC voltage output from the power source input unit. According to the generated AC_OK signal, the SW_ON signal, which is an on / off determination signal of the AC power switch, is output.c) According to the DC voltage charged to the battery, whether the battery output DC voltage is sufficient to supply sufficient power to drive the load. Generates a BAT_OK signal for determining whether there is, d) basic enable or disable according to the generated AC_OK signal, BAT_OK signal, SW_ON and externally supplied control signals PWR_HOLD, SENiN [1 ... N]. A power control unit for outputting the enable signal GEN and the selective enable or disable signal SENo [1, ..., N], respectively; A single voltage generation unit configured to convert and output a source power DC voltage selected by a power source input unit into a used voltage required by a load according to a basic or selective enable / disable signal output from the power control unit. It is in a ship.

In another aspect of the present invention, the power source input unit includes an AC / DC converter for converting an input AC power into an arbitrary DC voltage; A battery charging circuit unit which charges the battery with the DC voltage converted by the AC / DC converter and provides the power control unit with the battery; And a source power switching circuit for switching the DC voltage output from the AC / DC converter and the charged DC voltage output from the battery to provide the source voltage DC voltage to the use voltage generator and the power controller.

In addition, according to another aspect of the present invention, the use voltage generator uses a load that requires a source power DC voltage provided from a power source input unit according to a basic enable or disable signal GEN provided from the power control unit. A plurality of DC / DC converters converting and outputting the DC voltages; Selectively converting the source power DC voltage provided from the power source input unit to the used DC voltage required by the load according to the selective enable or disable signal SENo [1, ..., N] provided by the power controller. It consists of a plurality of DC / DC converter to output. In still another aspect of the present invention, the GEN signal output from the power control unit to the use voltage generation unit may include a first AND gate for ORing the SW_0N signal and the AC_OK signal; A second AND gate for ORing the SW_ON signal and the BAT_OK signal; A first OR gate for ANDing the output of the first and second AND gates; Selective enable or disable signal output from the output of the first OR gate and the logic operation of the second OR gate to AND the PWR_HOLD signal, which is an externally maintained power supply signal, and output from the power control unit to the use voltage generation unit SENo [1, ..., N] is an AND logic operation of the GEN signal output from the power control unit to the voltage generator and an external control signal SENi [1, .. N].

1 is a schematic block diagram of a power supply apparatus for a wireless subscriber registration system according to the present invention;

2 is a block diagram illustrating a detailed block configuration of the power source input unit illustrated in FIG. 1;

3 is a diagram illustrating input and output relations between an internal control signal and an external control signal in the power control unit shown in FIG. 1;

4 is a diagram illustrating logic of an operation of the global enable signal GEN provided to the use voltage generator in the power controller illustrated in FIG. 1;

FIG. 5 is a diagram illustrating logic of an operation of the selected enable signal SENo provided to the use voltage generator from the power controller shown in FIG. 1;

6 is a view showing a hysteresis characteristic curve of the battery output DC voltage shown in FIG. 1;

FIG. 7 is a block diagram illustrating an internal block configuration of a used power supply voltage generator illustrated in FIG. 1.

<Explanation of symbols for main parts of drawing>

10: power source input unit 11: AC / DC converter

12: battery charging circuit portion 13 source power switching circuit portion

30: voltage generator 31, 32: DC / DC converter

50: power control unit 51, 52, 55, 56, 57: AND gate

53, 53: OR gate 70: battery

Hereinafter, a preferred embodiment of a power supply device of a wireless subscriber registration system according to the present invention will be described in detail with reference to the accompanying drawings.

First, the essential basic operations of the power module using the auxiliary power battery will be described.

First, when the AC power source AC220 / 110V is normally applied, the battery is charged through the battery charger and the power source of all the power consumption becomes the AC power source.

When the AC power is not applied due to a power failure or an AC power cable connection error, the power source is switched to the output of the battery charged from the AC power through the power switching circuit.

In this case, when the power switch is turned on and the AC power is normally applied, the AC power source operates as a normal state. In other words, by applying power to the load circuit, the operation of the circuit is turned on.

However, even when the power switch is turned on, when the AC power is not applied, the output of the charged battery is used as the power source. Here, if the output level of the battery can be sufficiently supplied with power consumption, the normal operation is performed as in the case of supplying AC power using this as a power source.

However, if the output level of the battery cannot be sufficiently supplied with power consumption, power is not supplied to the load circuits consuming power (do not turn on the operation of the load circuit).

When the output level of the battery reaches a state that is not sufficient for power supply, the load circuit operation can no longer be performed. Therefore, a proper measure is inferred accordingly, and the power supply to the load circuit is turned off. Need to To this end, a signal indicating the state of the battery to the controller for controlling the operation of the load circuit and a control signal for turning off the power supply to the load circuit is required.

On the other hand, when the operation of the load circuit is immediately turned off when the power switch is switched from the on state to the off state, the power supply to the load circuit is turned off at the same time as the switch off.

If a specific operation must be performed before switching off the operation of the load circuit when switching off, the power supply of the load circuit must be maintained during the specific operation, and the entire operation of the load circuit is controlled to maintain the power supply. In the controller, there should be a signal to know that the switch is off and a control signal to keep the power supply to the load circuit (ON) and stop (OFF).

In addition, when some circuits of the load circuit are selectively operated as needed, the power consumption can be reduced by cutting off the power supply to the circuits of the portions where the operation is not necessary. In this case, a control signal capable of turning on / off their power supply in the controller of the load circuit is required.

There may be various cases of implementing a power module having the functions listed as above, and in some cases, all of them are not necessary, but the structure of the power module is unified so that the same structure is applied to the power module applied to different cases. By going around, it is easy to partially delete or change as needed, making it easier to develop a power module.

A configuration for implementing the basic functions of the power module is shown in FIG. That is, FIG. 1 is a schematic block diagram of a power supply device of a wireless subscriber matching system according to the present invention, and FIG. 2 is a diagram showing a detailed configuration of the power source input unit 10 shown in FIG.

The power module as shown in FIG. 1 is functionally composed of a power source input unit 10, a use voltage generator 30, a power controller 50, and a battery 70 for auxiliary power supply.

Hereinafter, the input and output signals and functions of each block will be described in detail.

First, as shown in FIG. 2, the power source input unit 10 includes an AC / DC converter 11, a battery charging circuit unit 12, and a source power switching circuit unit 13 for each function.

The AC / DC converter 11 (adapter) receives a main power source of AC 220 / 110V, converts AC / DC, and generates a DC output to be used for battery charging and source power DC voltage.

The battery charging circuit unit 12 charges the battery 70 with a DC voltage output from the AC / DC converter 11 when AC power is normally applied.

When the AC power is normally applied, the source power switching circuit unit 13 outputs the DC voltage output from the AC / DC converter 11 to the use voltage generation unit 30 as the source power DC voltage, and the AC power is applied. If not, the DC voltage charged in the battery 70 is output to the use voltage generator 30 as the source power DC voltage.

In addition, the power controller 50 shown in FIG. 1 is shown in detail in FIG. 3, and as shown in FIG. 3, the input / output signals of the power controller 50 are converted into a power module internal control signal and a power module external control signal. Are classified.

Referring to the input signal of the internal control signal of the power module of the power control unit 50 as shown in FIG. 3, the source power DC voltage output from the source power switching circuit 13 of the power source input unit 10, and the power source input unit. The adapter output DC voltage output from the AC / DC converter 11 of (10) and the battery output voltage output from the battery charging circuit 12 of the power source input unit 10 are input. Here, the source power source DC voltage acts as a power source required for the circuit operation of the power source control unit 50, and is used to generate reference voltage levels to be compared when generating other control signals.

In addition, the adapter output DC voltage is used to generate an AC_OK signal that determines whether the AC power is applied by comparing the adapter output DC voltage level with the reference voltage level generated from the source power DC voltage.

The battery output DC voltage is then used to generate a BAT_OK signal that determines whether the battery 70 output is at a level capable of supplying sufficient power to drive the load circuit.

In addition, the signals that are output to the use voltage generator 30 among the internal control signals of the power supply controller 50 may include a global enable (GEN) signal and a selected enable (SENo. 1). .N]) signal. Here, the global enable signal GEN is a signal for enabling all DC / DC converters (not shown) in the voltage generator 30 according to the power module operation control mechanism. When the power switch is turned on, the global enable signal GEN is basically It is directly connected to an enable terminal of the DC / DC converter in the used voltage generator 30 to be turned on. If the operation of the GEN signal is configured in logic, as shown in FIG.

That is, as shown in FIG. 4, when the AC power is applied and the battery 70 output is at an operating level or higher, that is, when the AC_OK signal is 1 and the BAT_OK signal is 1 (AC_OK = 1). ), The outputs of the AND gates 51 and 52 become '1', respectively, and the output of the OR gate 53 becomes '1'.

In addition, since the output of the OR gate 53 is '1', the output of the OR gate 54, that is, the GEN signal becomes 1 regardless of the power supply holding signal PWR_HOLD, which is an external control signal, so that the use voltage generator 30 Is on.

Here, when the power switch is turned on and off, that is, when the SW_ON signal is '0', the output of the AND gates 51 and 52 becomes '0', so the output of the OR gate 53 is '0'. do. Accordingly, in order for the output of the OR gate 54, that is, the GEN signal to be '0' and the use voltage generator 30 is turned off, the power control signal PWR_HOLD, which is an external control signal, must be '0'. That is, when the power switch is turned on and off, the use voltage generator 30 is turned off (GEN = 0) only when the power control signal PWR_HOLD, which is an external control signal, becomes '0'.

Next, the selected enable signal SENo [1 ... N] provided from the power control unit 50 to the use voltage generation unit 30 will be described.

Some of the DC / DC converters in the use voltage generator 30 may be selectively enabled and operated. In this case, SENO [1 .... N] is formed by constructing AND logic with GEN and the external control signal SENi [1 ... N].

Referring to the logic for generating SENo [1 ... N] as shown in FIG. 5.

That is, SENo [1 .... N] is composed of a plurality of AND gates 55, 56, 57, as shown in FIG. 5, and each AND gate 55, 56, ... 57. One of the two input signals is a common signal GEN, and the other input signal is SENiN [1, .... N].

That is, as shown in FIG. 5, the SENo1 signal is generated by ANDing the GEN signal and the SENi1 signal through the AND gate 55, and the SENo2 signal is generated by the GEN signal and the SENi2 signal through the AND gate 56. The AND signal is generated by being ANDed, and the SENoN signal is generated by being ANDed through the AND gate 57 of the GEN signal and the SENiN signal.

Next, an external control signal of the input / output power module of the power control unit 50 shown in FIG. 3 will be described. Here, the power supply module external control signal is an input / output control signal used when an external controller (not shown) requires control of the power supply module for circuit operation.

First, the external input control signal of the power module includes PWR_HOLD, which is a power maintaining signal, and a SENiN signal.

The PWR_HOLD signal, which is a dual power maintaining signal, is generated when a specific operation is required (power down registration of a mobile phone) before the power module is turned off (SW_ON = 0) and the power module is turned off and the circuit operation is stopped. That is, the external controller, which detects that SW_ON is '0', that is, the power switch is turned off, maintains the PWR_HOLD signal as '1' and performs the specific operation, and then applies the PWR_HOLD signal to '0' to apply the power module. The circuit operation is stopped by turning off the use voltage generator 30 (GEN = 0).

When the AC power is not applied (AC_OK = 0), the battery controller 70 operates as an auxiliary power supply (BAT_OK = 1) while the output of the battery 70 falls below the operating level (BAT_OK = 0). After detecting this and taking appropriate measures (registration of the power down due to low battery of the mobile phone or WLLRIU), PWR_HOLD = 0 is applied to turn off the power supply unit 30 of the power module (GEN = 0). Abort the operation.

Meanwhile, SENiN [1, .., N] of the external control input signals input to the power control unit 50 shown in FIG. 3 are turned on / off as needed among the DC / DC converters in the voltage generation unit 30. When turned off to turn on / off partial circuit operation in the load circuit, these are optional enable control input signals applied by an external controller.

In addition, an external control output signal of the power supply controller 50 shown in FIG. 3 includes an AC_OK signal, a BAT_OK signal, and a SW_OK signal. Here, the AC_OK signal is a signal indicating the AC power supply state, and monitors the AC / DC converter 11, that is, the adapter output DC voltage, of the power source input unit 10 as shown in FIG. Determine and notify the external controller.

If AC power is applied, '1' is output as the AC_OK signal. If AC power is not applied, '0' is output as the AC_OK signal.

The BAT_OK signal is a signal indicating whether the output level of the battery 70 can supply sufficient power for the operation of the load circuit. The BAT_OK signal monitors and determines the output DC voltage of the battery 70 and notifies the external controller thereof. If the output of the battery 70 is greater than or equal to the operation level, the BAT_OK signal is outputted as '1'. If the output of the battery 70 is less than or equal to the operation level, the BAT_OK signal is outputted as '0'.

Since the output of the battery 70 changes in voltage level according to the load, after the power module is turned off due to the low battery, the power module is turned on again due to the increase in the output voltage of the battery 70 due to the decrease in load. To prevent this, AC_OK should be designed to change state with hysteresis characteristics as shown in FIG.

The SW_OK signal of the external control output signals of the power supply control unit 50 is a signal indicating the on / off state of the power switch and notifies the external controller. If the power switch is on, the SW_OK signal is '1', and when the power switch is off, the SW_OK is '0'.

7 is a block diagram illustrating an internal block configuration of the use voltage generator illustrated in FIG. 1, wherein the use voltage generator 30 is an output of the AC / DC converter 11 of the power source input unit 10 or an output of a battery 70. From the source power source DC voltage, this part generates the power supply voltages used in the actual circuit. As shown in FIG. 7, the power source generator 30 is a source power source provided from a plurality of DC / DC converters 31 that are basically enabled and operated when the power switch is turned on. A plurality of DC / DC converters 31 for converting and outputting DC voltages required for circuits basically operated according to the GEN signal provided from the power supply controller 50 and the power source input unit 10 are outputted. A plurality of DC / DCs, which are selectively enabled according to the SENo [1, ...., N] enable signals provided from the power supply controller 50, convert the source power DC voltages into the DC voltages of the selected circuit and output them. It is composed of a converter (52).

The power supply device in the wireless subscriber matching system according to the present invention as described above is usually used for the electrical appliances used in daily life or many electrical equipment used in the industrial field, the main power supply, such as power failure or power cable error When the main power is not supplied due to unexpected cases, there are many that receive a source from the auxiliary power battery. In some cases, appropriate measures must be taken before the auxiliary power battery is discharged and the device becomes inoperable. When the main power does not operate like this, by standardizing the structure and control operation of a power module suitable for use with a device operating as a battery for auxiliary power, the product development is made by unifying the structure of a power module implemented in a different form in each case. And it is possible to simplify modification and modification, and to reduce the overall costs associated with development.

Claims (5)

In the power supply of the wireless subscriber matching system having a secondary power battery and a power switch, After converting the input AC power into a DC voltage having an arbitrary level, the converted DC voltage is charged with a battery, and the converted DC voltage or the DC voltage charged in the battery is converted into a source power DC according to whether the AC power is input. A power source input unit for selectively outputting a voltage; a) operates according to the source power DC voltage output from the power source input unit, b) generates an AC_OK signal that determines whether to apply AC power according to the AC / DC converted DC voltage output from the power source input unit, and then SW_ON signal that is an AC power switch on / off determination signal according to the generated AC_OK signal. Outputs c) generates a BAT_OK signal that determines whether the battery output DC voltage is at a level capable of supplying sufficient power to drive the load according to the DC voltage charged to the battery, d) a basic enable or disable signal (GEN) and a selective enable or disable according to the generated AC_OK signal, BAT_OK signal, SW_ON and externally provided external control signals (PWR_HOLD, SENiN [1 ... N]). A power control section for outputting the disable signals SENo [1, ..., N]; A single voltage generation unit configured to convert and output a source power DC voltage selected by a power source input unit into a used voltage required by a load according to a basic or selective enable / disable signal output from the power control unit. A power supply device in a wireless subscriber matching system, characterized in that. The method of claim 1, The power source input unit includes an AC / DC converter for converting an input AC power into an arbitrary DC voltage; A battery charging circuit unit which charges the battery with the DC voltage converted by the AC / DC converter and provides the power control unit with the battery; And a source power switching circuit configured to switch the DC voltage output from the AC / DC converter and the charged DC voltage output from the battery to provide the source voltage DC voltage to the use voltage generator and the power controller. Power supply in wireless subscriber matching system. The method of claim 1, The use voltage generation unit converts the source power DC voltage provided from the power source input unit into a use DC voltage required by the load according to the basic enable or disable signal GEN provided from the power control unit, and outputs a plurality of outputs. A DC / DC converter; Selectively converting the source power DC voltage provided from the power source input unit to the used DC voltage required by the load according to the selective enable or disable signal SENo [1, ..., N] provided by the power controller. Power supply in the wireless subscriber matching system, characterized in that consisting of a plurality of DC / DC converter to output. The method of claim 1, The GEN signal output from the power control unit to the use voltage generation unit includes: a first AND gate for ORing the SW_0N signal and the AC_OK signal; A second AND gate for ORing the SW_ON signal and the BAT_OK signal; A first OR gate for ANDing the output of the first and second AND gates; And an output of the first OR gate and a logic operation of a second OR gate that logically multiplies the PWR_HOLD signal, which is an externally maintained power supply signal. The method of claim 1, SENo [1, ..., N], which is a selective enable or disable signal output from the power control unit to the use voltage generation unit, is a GEN signal output from the power control unit to the use voltage generation unit, and SENi [1, A power supply device in a wireless subscriber matching system characterized by outputting by AND logic operation.