KR100315415B1 - Power Line Telephone Network System for Uninterruptible Power Supply - Google Patents

Abstract

The present invention provides a power line telephone network system for an uninterruptible power supply that continuously supplies power to a telephone through a telephone repeater when AC power supply through the power line is interrupted in the power line telephone network.

The power line telephone network system of the present invention is separately connected to the telephone repeater and the power supply unit for supplying power to the telephone repeater when the power supply is interrupted from the outside, the AC power is normally supplied from the outside, the AC power supply from the outside is interrupted Interlock means for supplying direct current power from the power supply unit connected to the telephone repeater, and the interlock means connected in parallel with an external AC power supply to the telephone when the DC power supply from the power supply unit connected to the telephone repeater is interrupted. A direct current storage battery for supplying power is provided. The system of the present invention is further provided with a blocking device including a high pass filter which is connected in parallel with the breaker for blocking the power line and passes only the communication information signal in case of power failure.

Description

Powerline Telephone Network System for Uninterruptible Power Supply

The present invention relates to a power line communication system. More specifically, the present invention relates to a power line telephone network system for supplying an uninterruptible power supply that can continuously supply power to a communication system when power supply through the power line is interrupted.

In general, a power line communication system is a communication system using a power line as a communication line, and may be referred to as a communication system utilizing the advantages of wired communication and wireless communication. An example of such a power line communication system is a method of constructing a telephone network using a power line, which is a telephone line system in which a telephone line is directly supplied to a telephone through a telephone line from a telephone company. Power on to make phone calls.

However, since the conventional power line telephone network system is supplied with the call power using the power line, there is a problem that the power supply to the telephone is stopped when a power failure occurs and the call becomes impossible.

In addition, a conventional power line telephone network system is provided with a plurality of breaker circuits on the power line line. When such a breaker performs a break operation, call power supplied through the power line is also interrupted. There is a problem that the call is interrupted.

An object of the present invention is to overcome the above problems, to provide a power line telephone network system for an uninterruptible power supply to enable continuous telephone conversation by continuously supplying the operating power to the telephone network when the power supply is interrupted through the power line have.

1 is a flow chart schematically showing a power supply method of the present invention,

2 is a schematic structural block diagram of a telephone power supply unit according to the present invention;

Figure 3 is a block diagram showing an embodiment of a blocking device applied to the system of the present invention,

Figure 4 is a block diagram showing another embodiment of the blocking device applied to the system of the present invention including the interlock means.

<Explanation of symbols for the main parts of the drawings>

10: phone

13 interlock means

14 DC battery

30, 40: blocking device

32, 42: high pass filter

45 interlock means

According to one aspect of the present invention for achieving the above object, in a power line telephone network system using a power line telephone network as a communication line, the power supply for supplying power to the telephone repeater separately connected to the telephone repeater when power supply interruption from the outside Interlock means for supplying DC power from the power supply unit connected to the telephone repeater when the AC power is normally supplied from the outside and the AC power supply from the outside is stopped, and the interlock means is connected in parallel with the external AC power. There is provided a power line telephone network system for an uninterruptible power supply consisting of an auxiliary power supply for powering a telephone when the DC power supply from a power supply connected to a telephone repeater is interrupted.

In the embodiment of the present invention, the interlock means is composed of a relay for 220V, the relay is normally energized and the AC power is supplied to the telephone through the first line pair, and the external AC power is interrupted to connect to the telephone repeater When DC power is supplied by the power supply unit, the relay is turned off to disconnect the first line pair, and the second line pair is connected to supply DC power.

In addition, in the embodiment of the present invention, there is provided a cut-off device composed of a high-pass filter connected in parallel to the power line breaker to block low-frequency alternating current of 60 Hz / 50 Hz for power and to pass only a high frequency signal for telephony communication of 100 KHz or more. The blocking device may further include an interlock means connected in parallel to the breaker and connected in series to the high pass filter to connect a line to the high pass filter only when the power is cut off by the breaker. have.

The foregoing and other objects and features of the present invention will become more apparent upon a review of the following description of the invention with reference to the accompanying drawings.

A separate power supply unit is connected to the telephone repeater to supply power to the telephone repeater itself in case of power failure. Connect a DC battery to the power supply side in parallel to the telephone, and operate with low-voltage AC power in normal operation, and supply DC power from the battery when the power supplied from the low-voltage AC power is reduced below a certain level due to an abnormal state such as a power failure. It works. This DC battery uses a floating charging system which charges normally when it is not abnormal.

Hereinafter, an uninterruptible power supply method of a power line telephone network system according to the present invention will be described in detail with reference to the flowchart of FIG. 1. The telephone normally operates with an external AC power supplied (S111). If the power supply from the outside is interrupted by a power failure (S112), the DC power is supplied from a separate power supply unit connected to the repeater to operate the phone (S114). Subsequently, when the power supply is interrupted by the circuit breaker interrupting operation due to an internal abnormal state (S113), power is supplied to the phone from the storage battery attached to the phone (S115).

Next, a system of the present invention to which the above method is applied will be described. As shown in FIGS. 2 and 3, an interlock means 45 and a power supply unit 16 are provided to provide power line 46 during power failure. Repeater 15 for supplying call power through the call, and the call function is executed by the call power supplied from the repeater 15 via the power line 46, and the call power of the repeater 15 is interlocked. The power line telephone 10 for continuously executing the call function by operating the charging means 14 provided separately through the means 13, and connected to one end of the power line 46 connected to the repeater 15 to separate the power outage. It consists of a circuit breaker (31, 41) for passing only the communication information signal through the provided high-frequency call filter (32, 42).

And the front end of the high-pass filter (32, 42), as shown in Figure 4, the interlock means 40 is connected in parallel with the circuit breakers (31, 41) for switching switching action.

Here, the high pass filter 32, 42 blocks the power supply voltage flowing through the power line 46 and passes only the high frequency communication signal of 100 KHz or more.

Referring to the above system in detail, in Fig. 2, a telephone repeater 15 is provided between the telephone station 17 and the telephone 10, and the telephone repeater 15 has a separate power supply unit. When 16 is provided to stop supplying power from the outside, power is supplied from a separate power supply unit 16 connected to the repeater 15 to operate. In addition, when the AC power supply from the outside is interrupted, the phone 10 may be supplied with DC power. The interlock device 13 installed in the power input unit 11 of the telephone 10 is connected to a DC storage battery 14 in parallel with a 220V AC power supply, and the DC storage battery 14 stops supplying external AC power. And a breaker (not shown in FIG. 2, see FIG. 3) to cut off the power supply to supply the DC power to the telephone. The AC power supplied from the outside passes through the interlock device 13 of the telephone input unit and becomes a DC power source. When the AC power is normally supplied, the 220V relay of the interlock device is excited and AC power is supplied to the telephone through lines A and B, and the external AC power is interrupted so that DC power is supplied by a separate power supply unit connected to the telephone repeater. When this is supplied, the 220V relay is demagnetized so that the lines A and B are disconnected and the lines C and D are connected so that DC power is supplied.

According to the present invention, by using a power supply method that can continuously supply power when the power supply is interrupted, and by providing a telephone power input unit that can be provided with both AC power supply and DC power supply, a stable power line at the time of power supply interruption Maintain a telephone network.

The structure of the blocking device proposed in the present invention is shown in FIGS. 3 and 4. The blocking device 30 according to the present invention shown in FIG. 3 connects the high pass filter 32 in parallel to the existing breaker 31. Existing breakers not only cut off the power supply but also stop phone calls. Blocking device according to the present invention is configured by connecting the high-pass filter 32 in parallel to the existing circuit breaker 31, this high-pass filter is cut off the low-frequency 60Hz / 50Hz alternating current for power and high-frequency signal for telephony communication over 100KHz Pass the bay. Therefore, when the power supply is interrupted by the existing circuit breaker 31, by interrupting the power of the unwanted low frequency component and passing only the high frequency signal for the telephone call, continuous telephone conversation becomes possible. In another embodiment, the interlock means 40 is connected in parallel with the existing breaker 41 and in series with the high pass filter 42 so that the line on the high pass filter is connected only when the power is cut off by the breaker. It is shown in Figure 4 configured to.

Although the present invention has been described with reference to only certain embodiments, it may be practiced in other aspects with appropriate modifications. In other words, the concept and scope of the appended claims are not limited to the embodiments disclosed herein. For example, although the interlock means of the present invention is shown to be installed in the power input unit of the telephone, it may be configured to be mounted outside the telephone.

As described above, according to the present invention, when the power supply through the power line is interrupted, such as a power failure, by providing an interlock means at the telephone power input unit, both AC power and DC power can be supplied. Since the structure is supplied with power, telephone calls can be continuously made without interrupting the power supply, thereby making up for the shortcomings of the power line telephone network and having a more stable telephone network system. In addition, the existing circuit breaker is equipped with a high-pass filter, even when the power supply is interrupted, telephone calls are possible.

Claims (4)

A repeater 15 having an interlock means 45 and a power supply unit 16 for supplying call power through the power line 46 during a power failure; The charging means 14 provided separately through the interlock means 13 when the call function is executed by the call power supplied from the repeater 15 via the power line 46 and the call power of the repeater 15 is cut off. A power line telephone 10 for continuing to execute a call function by A blocker 30 connected in parallel to the breakers 31 and 41 for blocking the power line 46 connected to the repeater 15 and including a high pass filter 32 and 42 for passing only a communication information signal in case of a power failure; A power line telephone network system for an uninterruptible power supply, characterized in that consisting of 40). 2. The method of claim 1, wherein the blocking device (30, 40) comprises an interlock means connected in series between the front end of the high-pass filter (32, 42) and the breakers (31, 41) to perform a switching switching action. A power line telephone network system for an uninterruptible power supply. The power line telephone network system for supplying an uninterruptible power supply according to claim 1, wherein the high pass filter (32, 42) blocks a power supply voltage flowing through the power line (46) and passes only a high frequency communication signal of 100 KHz or more. 2. The power line telephone network system according to claim 1, wherein said charging means is a direct current battery.