JP5416306B1 - Transmission line equipment - Google Patents

Abstract

To provide a transmission line device with little loss of power and easy installation location.
SOLUTION: Processing means (electronic circuit 26) for performing predetermined processing on a signal transmitted through a transmission line, power storage means (secondary battery 24) for storing electric power, and AC power of a commercial power source as DC power Conversion means (AC / DC conversion circuit 21) for converting to, determination means for determining the state of the commercial power supply (control unit 22), and conversion by the determination means when it is determined that the state of the commercial power supply is normal When the DC power output from the means stores the power in the power storage means and supplies power to the processing means, and the determination means determines that the state of the commercial power supply is not normal, the power stored in the power storage means is processed. Control means (control unit 22) for performing control to supply power as power to the means.
[Selection] Figure 1

Description

  The present invention relates to a transmission line device.

  As a technique for supplying power to a base station of a mobile communication system, there is a technique disclosed in Patent Document 1. The technology disclosed in Patent Document 1 includes a small alternator that works on an engine when a commercial power supply fails, and a small battery. In the case of a power failure, the small alternator is operated and a rectified DC power source is wirelessly transmitted. By supplying directly to the device, a small uninterruptible mobile radio base station device is realized by combining a small battery and a small AC generator.

  Although the technology disclosed in Patent Document 1 is a configuration using an engine, for example, a cable television transmission path device is assumed to be installed aerial, so that an AC / DC conversion circuit, a small battery, An uninterruptible power supply having the above is also used. FIG. 3 shows a configuration of a conventional uninterruptible power supply used for a transmission line such as a cable television. The configuration shown in FIG. 3 includes the uninterruptible power supply device 100 and the transmission line devices 200 and 210, and operates with electric power from the commercial power supply 10.

  The commercial power supply 10 is a power source that supplies AC power of 100 volts. The uninterruptible power supply 100 includes a transformer 110, switching circuits 111 and 112, an inverter circuit 113, a charging circuit 114, a secondary battery 115, and a monitoring unit 116. The transmission line devices 200 and 210 include power transmission switches 201, 202, 211, and 212, AC / DC conversion circuits 203 and 213, a monitoring unit 204, an electronic circuit 205, and power supply separation filters 206, 207, 216, and 217. If the commercial power supply 10 is normal, 100 volt AC power supplied from the commercial power supply 10 is stepped down to 60 volt AC power and supplied to the transmission line device 200. When the commercial power supply is abnormal (when a power failure occurs), the power stored in the secondary battery 115 is converted into 60 volt AC power and supplied to the transmission line device 200.

  Here, the transformer 110 steps down the 100-volt AC power output from the commercial power supply 10 to 60 volts and supplies it to the switching circuit 111. The switching circuit 111 is controlled by the monitoring unit 116 and selects the output of the transformer 110 when the commercial power supply 10 is normal, and selects the output of the inverter circuit 113 when the commercial power supply 10 is abnormal. Output. The switching circuit 112 is controlled by the monitoring unit 116, and when the commercial power source 10 is normal, the secondary battery 115 is charged by the output of the charging circuit 114. When the commercial power source 10 is abnormal, the secondary battery 115 is charged. Is supplied to the inverter circuit 113. The inverter circuit 113 converts the direct current power output from the secondary battery 115 into 60 volt alternating current power and outputs it. The charging circuit 114 converts the 100-volt AC power output from the commercial power supply 10 into DC power and charges the secondary battery 115. The secondary battery 115 is charged by the charging circuit 114 and supplies DC power to the inverter circuit 113 when the commercial power supply 10 is not normal. The monitoring unit 116 monitors the state of the commercial power supply 10 and controls the switching circuits 111 and 112 based on the monitoring result.

  The transmission line device 200 includes power transmission switches 201 and 202, an AC / DC conversion circuit 203, a monitoring unit 204, an electronic circuit 205, and power source separation filters 206 and 207, and is connected to a transmission line 300 configured by a coaxial cable. Then, the signal transmitted to the transmission line 300 is processed by the electronic circuit 205, and the AC power supplied from the uninterruptible power supply 100 is superimposed on the transmission line 300 and transmitted to the other transmission line device 210.

  The transmission path device 210 includes power transmission switches 211 and 212, an AC / DC conversion circuit 213, a monitoring unit 214, an electronic circuit 215, and power source separation filters 216 and 217, and is configured by a coaxial cable. The signal transmitted to the transmission line 300 is processed by the electronic circuit 215, and AC power supplied from the other transmission line device 200 is separated and supplied to each part of the device.

  Here, AC power having a voltage of 60 volts supplied from the uninterruptible power supply device 100 is applied to the AC / DC conversion circuit 203. The AC / DC conversion circuit 203 converts this AC power into DC power and supplies it to the electronic circuit 205 as power supply power. The electronic circuit 205 receives a signal transmitted through the transmission line 300, performs a predetermined process, and sends out the transmission line 302 again. The monitoring unit 204 monitors the output voltage of the AC / DC conversion circuit 203 and notifies an upper circuit via the electronic circuit 205 and the transmission path 300 when an abnormality occurs. When the power transmission switch 201 is turned on, AC power supplied from the uninterruptible power supply 100 is supplied to the power supply separation filter 206 and is sent to the transmission line 300 via the power supply separation filter 206. In addition, when the power transmission switch 202 is turned on, the AC power supplied from the uninterruptible power supply 100 is supplied to the power supply separation filter 207 via the power transmission switch 202. The power supply separation filter 207 sends AC power through the transmission line 300.

  In the transmission line device 210, the electronic circuit 215 receives a signal transmitted through the transmission line 300, performs a predetermined process, and then sends it again to the transmission line 300. The power supply separation filter 216 separates AC power transmitted through the transmission line 300 and supplies the AC power to the AC / DC conversion circuit 213 via the power transmission switch 211. The AC / DC conversion circuit 213 converts alternating current power supplied via the power transmission switch 211 into direct current power and supplies it to the electronic circuit 215 as a power source. The AC power supplied from the power transmission switch 211 is supplied to the power supply separation filter 217 via the power transmission switch 212. The power supply separation filter 217 sends AC power supplied from the power transmission switch 212 to the transmission line 300. In the example shown in FIG. 3, two transmission path devices 200 and 210 are shown. However, it is possible to provide three or more transmission path devices.

  According to the conventional technology as described above, since power can be supplied from the uninterruptible power supply device 100 to the plurality of transmission line devices 200 and 210, the system can be simplified by sharing the power source.

JP 2003-284259 A

  In the conventional example shown in FIG. 3, when the commercial power supply 10 is normal, the power is stepped down by the transformer 110 and further converted into a desired voltage by the AC / DC conversion circuits 203 and 213. Further, when the commercial power supply 10 is not normal, electric power converted by the inverter circuit 113 and further converted into a desired voltage by the AC / DC conversion circuit is used. For this reason, there exists a problem that the structure of an apparatus is complicated and the loss of electric power is large.

  In addition, since the single uninterruptible power supply 100 supplies power to the plurality of transmission line devices 200 and 210, the size and weight of the transformer 110 and the secondary battery 115 mounted on the uninterruptible power supply 100 increase. For this reason, for example, the same aerial installation as that of the transmission line device is difficult, and it is difficult to secure the installation location.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a transmission line device that has a small power loss and can easily secure an installation location.

In order to solve the above problems, the present invention is connected to a transmission path for transmitting a broadcast signal of cable television Rutotomoni, the transmission path apparatus to be fictitious installed, the cable TV broadcasting signal transmitted through the transmission path A processing means for performing a predetermined process on the battery , a secondary battery , a conversion means for converting AC power of the commercial power source into DC power, stepping down to a predetermined voltage and outputting , and disposed at a subsequent stage of the conversion means And charging the secondary battery with DC power obtained by the conversion means, supplying power to the processing means, determining means for determining the state of the commercial power source, and determining the commercial power source by the determining means If the state of the power supply is determined to be normal, and supplies source power to the processing means with charging the secondary battery by said charging means, said determination If the state of the commercial power source is determined not to be normal by the stage, and a control means for controlling supply as a power supply electric power to the processing means power stored in the secondary battery, the conversion The means is detachably attached to the transmission line device .
According to such a configuration, it is possible to provide a transmission line device that can reduce power loss and easily secure an installation location.

Moreover, one aspect of the present invention includes a detection unit that detects an operation state of each unit of the transmission path device, and a notification unit that notifies an upper-level device of the operation state of each unit detected by the detection unit. It is characterized by that.
According to such a configuration, the occurrence of a failure is notified to a host device, and quick recovery can be performed.

One aspect of the present invention is characterized in that the secondary battery is detachably attached to the transmission line device.
According to such a configuration, the storage battery means can be easily replaced, and damage to the circuit and the like included in the transmission line device can be prevented.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the transmission line apparatus with few loss of electric power and easy ensuring of an installation location.

It is a figure which shows the structural example of the transmission line apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the structural example of the transmission line apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the structural example of the conventional transmission line apparatus.

  Next, an embodiment of the present invention will be described.

(A) Description of Configuration of First Embodiment of the Present Invention FIG. 1 is a diagram illustrating a configuration example of a transmission line device according to the first embodiment of the present invention. As shown in this figure, the transmission line device 20 according to the first embodiment of the present invention includes an AC / DC conversion circuit 21, a control unit 22, a charging circuit 23, a secondary battery 24, a DC / DC conversion circuit 25, and The electronic circuit 26 is included.

  Here, the AC / DC conversion circuit 21 converts the AC power of 100 volts supplied from the commercial power supply 10 into a value slightly higher than the terminal voltage of the secondary battery 24, for example, and outputs the converted value. For example, when the voltage of the secondary battery 24 is 12 volts, it is converted into, for example, DC power of 15 volts and output. The AC / DC conversion circuit 21 is configured to be detachable from the transmission line device 20. For example, the AC / DC conversion circuit 21 has a cartridge shape having a connection terminal, and the cartridge can be easily attached and detached by inserting or removing the cartridge from the transmission line device 20. it can.

  The control unit 22 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), and controls each unit of the apparatus based on programs and data stored in the ROM. In FIG. 1, a broken line indicates a control signal line, a thin solid line indicates a power line, and a thick solid line indicates a transmission line.

  The charging circuit 23 charges the secondary battery 24 with the DC power output from the AC / DC conversion circuit 21 when the secondary battery 24 needs to be charged (for example, when the SOC (State of Charge) is low). At the same time, the DC power of the secondary battery 24 is supplied to the DC / DC conversion circuit 25 when the commercial power supply 10 fails.

  The secondary battery 24 is composed of, for example, a lead storage battery, a nickel cadmium battery, a nickel metal hydride battery, a lithium ion battery, or a supercapacitor, and is charged by DC power supplied from the charging circuit 23 when the commercial power supply 10 is normal. In the event of a power failure, DC power is supplied to the DC / DC conversion circuit 25 via the charging circuit 23.

  The DC / DC conversion circuit 25 is constituted by, for example, a constant voltage circuit, converts DC power supplied from the AC / DC conversion circuit 21 or the secondary battery 24 into a constant voltage, and supplies it to the electronic circuit 26. Of course, a configuration including a booster circuit may be used.

  The electronic circuit 26 is connected to transmission lines 31 and 32 constituted by, for example, coaxial cables, receives signals transmitted through the transmission lines 31 and 32, and performs, for example, amplification processing or waveform shaping processing on the transmission line. Send again.

  The transmission paths 31 and 32 are constituted by coaxial cables, for example, and transmit cable television broadcast signals.

(B) Description of Operation of First Embodiment of the Invention Next, operation of the first embodiment will be described. Hereinafter, the case where the commercial power supply 10 is normal and the case where it is abnormal will be described separately. First, when the commercial power supply 10 is normal, the control unit 22 can determine that the commercial power supply 10 is normal by measuring the voltage of the commercial power supply 10. When it is determined that the commercial power supply 10 is normal, the control unit 22 controls the AC / DC conversion circuit 21 to convert the AC power of the commercial power supply 10 into DC power and supply it to the charging circuit 23. Further, the charging circuit 23 is controlled, and the secondary battery 24 is charged as necessary by the DC power output from the AC / DC conversion circuit 21. Further, the DC power output from the AC / DC conversion circuit 21 is supplied to the DC / DC conversion circuit 25.

  With the operation as described above, when the commercial power supply 10 is normal, 100 volt AC power supplied from the commercial power supply 10 is supplied to the AC / DC conversion circuit 21 and stepped down to a predetermined voltage to be charged. 23. The charging circuit 23 supplies the DC power supplied from the AC / DC conversion circuit 21 to the DC / DC conversion circuit 25 and charges the secondary battery 24 as necessary. More specifically, for example, the charging circuit 23 measures the voltage of the secondary battery 24, and when the terminal voltage of the secondary battery 24 is lowered to a voltage that requires charging, the AC / DC conversion circuit 21. The secondary battery 24 is charged with, for example, a constant current by the direct-current power supplied from. By such an operation, the secondary battery 24 is maintained in a fully charged state or a state close to a fully charged state.

  Further, the charging circuit 23 supplies the DC power supplied from the AC / DC conversion circuit 21 to the DC / DC conversion circuit 25. The DC / DC conversion circuit 25 converts the DC power supplied from the charging circuit 23 into the rated voltage of the electronic circuit 26 and outputs the converted voltage.

  The electronic circuit 26 receives supply of power from the DC / DC conversion circuit 25, receives signals transmitted through the transmission paths 31 and 32, and amplifies processing, waveform shaping processing, and processing for adding information of the transmission path device 20. Then, the data is sent to the transmission lines 31 and 32.

  With the above operation, when the commercial power supply 10 is normal, the secondary battery 24 is charged as necessary, and power is supplied to the electronic circuit 26.

  Next, an operation when the commercial power supply 10 is abnormal will be described. For example, when the commercial power supply 10 has a power failure, the control unit 22 determines that the commercial power supply 10 is abnormal because a normal voltage is not detected. As a result, the control unit 22 controls the charging circuit 23 to supply the power stored in the secondary battery 24 to the DC / DC conversion circuit 25. The DC / DC conversion circuit 25 converts the voltage of the DC power supplied from the secondary battery 24 and supplies it to the electronic circuit 26. The control unit 22 generates a message indicating that an abnormality has occurred in the commercial power supply 10, adds information for specifying the transmission source of the message, and transmits the information to the transmission lines 31 and 32 via the electronic circuit 26. You may make it send out. By sending such a message, the host device can receive this message and know the occurrence of an abnormality and the location of the occurrence, so that quick recovery is possible.

  In the above description, the case where an abnormality has occurred in the commercial power supply 10 has been described as an example. However, for example, even when the AC / DC conversion circuit 21 fails due to a lightning strike or the like, the supply of power can be maintained. More specifically, for example, when a lightning strike occurs in the commercial power supply 10 and the AC / DC conversion circuit 21 fails, the control unit 22 performs AC / DC conversion even though the commercial power supply 10 is normal. Since the output of the circuit 21 is abnormal, it can be determined that the AC / DC conversion circuit 21 is abnormal. In such a case, the control unit 22 controls the charging circuit 23 and supplies the power of the secondary battery 24 to the DC / DC conversion circuit 25. In addition, the control unit 22 transmits a message indicating that the AC / DC conversion circuit 21 has failed and information (for example, ID information) for specifying the transmission source via the electronic circuit 26 to the transmission paths 31 and 32. To send. As a result, the host device can know that the AC / DC conversion circuit 21 has failed and can identify the transmission line device in which the failure has occurred. As a result, by replacing the AC / DC conversion circuit 21 with a new one within the time during which the power supply from the secondary battery 24 is maintained, the transmission lines 31 and 32 can be prevented from malfunctioning without causing an abnormality. Recovery can be achieved.

  As described above, according to the first embodiment of the present invention, when the commercial power source 10 is normal, the secondary battery 24 is charged as necessary with the AC power of the commercial power source 10, and the commercial power source 10 is not normal, the power stored in the secondary battery 24 is supplied to the electronic circuit 26 via the DC / DC conversion circuit 25, so that an abnormality has occurred in the commercial power supply 10. However, the electronic circuit 26 can continue to operate. In addition, since the AC / DC conversion circuit 21 can be replaced, for example, when the AC / DC conversion circuit 21 breaks down due to lightning or the like, it can be quickly replaced and recovered from the failure. Further, in the first embodiment described above, the secondary battery 24 does not need to supply power to a plurality of transmission line devices, and may supply power only to itself, so that it is smaller than the conventional example shown in FIG. Secondary batteries can be used. For this reason, since the AC / DC conversion circuit 21 can also be reduced in size, the size of the entire apparatus can be reduced. Thereby, since it becomes possible to carry out the aerial installation (electric pole co-mounting), for example, the transmission line apparatus 20 becomes easy to ensure an installation place.

(C) Description of Second Embodiment of the Present Invention Next, a second embodiment of the present invention will be described. FIG. 2 is a diagram illustrating a configuration example of the second embodiment of the present invention. In FIG. 2, the same reference numerals are given to the portions corresponding to those in FIG. Here, the embodiment shown in FIG. 2 is different from FIG. 1 in that the secondary battery 24 is configured as a separate body, and the other configuration is the same as that in FIG.

  In the second embodiment, since the secondary battery 24 is housed in a housing different from the main body, when a failure occurs in the secondary battery 24, it can be quickly replaced. Further, when the secondary battery 24 is, for example, a lead storage battery, hydrogen gas is generated during charging. Therefore, it is necessary to provide an exhaust port in a part of the casing so that the hydrogen gas does not remain in the casing. is there. For this reason, it is assumed that rainwater enters from this exhaust port, and the electronic circuit 26 may be wetted by rainwater and break down. Further, in the case of a lead storage battery, since dilute sulfuric acid is used as an electrolytic solution, it is assumed that dilute sulfuric acid mist is generated and the electronic circuit 26 is corroded. However, the occurrence of such a problem can be avoided by making the secondary battery 24 separate from the main body.

  As described above, according to the second embodiment of the present invention, not only can the effect similar to that of the first embodiment be expected, but also the secondary battery 24 can be separated from the main body so that the electrons are generated by rainwater. It is possible to prevent the circuit 26 from getting wet or being corroded by dilute sulfuric acid mist.

(D) Description of Modified Embodiment The above embodiment is an example, and it is needless to say that the present invention is not limited to the case described above. For example, in each of the above embodiments, the case where the transmission paths 31 and 32 are coaxial cables has been described as an example. However, for example, at least one of the transmission paths 31 and 32 may be an optical cable. That is, one of the transmission paths 31 and 32 may be an optical cable, or both may be optical cables.

  In each of the above embodiments, the DC / DC conversion circuit 25 is provided. For example, when the electronic circuit 26 includes a power supply circuit such as a three-terminal regulator, the DC / DC conversion circuit 25 is provided. Can be omitted.

  In each of the above embodiments, when the control unit 22 detects an abnormality in the AC / DC conversion circuit 21, a notification is sent to the host device via the transmission lines 31 and 32. You may make it notify abnormality by communication methods (for example, the internet etc.) other than 32. In each of the above embodiments, the AC / DC conversion circuit 21 has been described as an example. However, other than this, for example, an abnormality of the commercial power supply 10, an abnormality of the charging circuit 23, a DC / DC conversion circuit, and the like. 25 abnormalities, secondary battery 24 abnormalities, electronic circuit 26 abnormalities, and transmission path 31 and 32 abnormalities may be detected and notified to the upper circuit.

Further, in each of the above embodiments, the transmission line device 20 is described as an aerial installation. However, in addition to this, for example, the transmission line device 20 may be disposed in a common groove, or may be disposed at the base of a utility pole, or Alternatively, the communication line may be arranged on a support column for aerial installation.

DESCRIPTION OF SYMBOLS 10 Commercial power supply 20 Transmission path apparatus 21 AC / DC conversion circuit (conversion means)
22 Control unit (determination means, control means, detection means, notification means)
23 Charging circuit 24 Secondary battery (electric storage means)
25 DC / DC conversion circuit 26 Electronic circuit (processing means)
31, 32 transmission line

Claims (3)

Is connected to a transmission path for transmitting a broadcast signal of cable television Rutotomoni, the transmission path apparatus to be fictitious installed,
Processing means for performing predetermined processing on the broadcast signal of the cable television transmitted through the transmission path;
A secondary battery ,
Conversion means for converting the AC power of the commercial power source into DC power, stepping down to a predetermined voltage, and outputting ,
A charging unit that is arranged at a subsequent stage of the conversion unit and charges the secondary battery with DC power obtained by the conversion unit, and supplies power to the processing unit;
Determining means for determining the state of the commercial power supply;
When the determination means determines that the state of the commercial power supply is normal, the charging means charges the secondary battery and supplies power to the processing means, and the determination means supplies the commercial power supply. Control means for performing control to supply power stored in the secondary battery as power supply power to the processing means when it is determined that the state is not normal ;
The transmission path device is characterized in that the conversion means is detachably attached to the transmission path device. Detecting means for detecting an operating state of each part of the transmission line device;
Notification means for notifying the host device of the operating state of each unit detected by the detection means;
The transmission line apparatus according to claim 1, wherein: The transmission line device according to claim 1 or 2, wherein the secondary battery is detachably attached to the transmission line device.

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