JP6890464B2 - A power source with power generation means and a communication system with a power source with power generation means - Google Patents

Description

The present invention relates to a backup power source and further to a communication system using the backup power source. Furthermore, the present invention relates to an independent power source in which a solar cell, a wind power generation device, or the like is connected to a backup power source, and a communication system using the independent power source. It also relates to a bus location system using this communication system.

In recent years, LPWA (Low Power Wide Area) communication has been attracting attention as a standard communication method for IoT (Internet of Things) terminals in which all objects are connected to the Internet. Specifically, the LoRa method, the SIGFOX (registered trademark) method, the NB-IoT method and the like are known. A feature of these communication methods is that they can communicate over a wide range of several kilometers to several tens of kilometers while using power consumption that is one to two orders of magnitude lower than that of the conventional method. As a result, not only the power consumption of the IoT terminal can be reduced, but also the power consumption of the base station can be reduced. Furthermore, as a result of the significantly smaller size of this base station, it has become possible to attach it to telephone poles, the outer walls of buildings, and walls. In addition, the reduced power consumption makes it possible to supply power (so-called PoE (Power over Ethernet) power supply) using wiring developed for communication (for example, RJ-45 connector and compatible Ethernet cable wiring). Therefore, the effect of eliminating the need for special power supply work can be expected. In addition, the tendency of low power consumption extends to various products, and since there are cameras, routers, telephones, lights, monitors, etc. that support PoE power reception, PoE that performs AC-DC conversion for PoE connection The prices of injectors, PoE-compatible switching hubs, etc. are also being reduced.

In LPWA communication, the transmission rate is tens of bytes / second to several hundred kilobytes / second, which is slower than other communication methods. Therefore, mass production of communication chips at low cost without using advanced semiconductor technology is possible. Can be done. As a result, the cost of the communication module can be reduced. Further, in LPWA communication, not only the cost of the base station is low, but also the cost for installing one base station is significantly reduced because of its small size. Furthermore, since the area covered by one base station is wide, it is possible to reduce the number of base stations, and as a result, it is possible to significantly reduce communication costs.

In general LPWA communication, communication from a high-speed mobile body such as a car or a train cannot be performed. Therefore, communication from a high-speed mobile body uses communication such as 3G or LTE utilizing a mobile phone communication network. Is common.

Further, small terminals (tags) conforming to a communication standard called BLE (Bluetooth (registered trademark) Low Energy) have become widespread. The feature of this tag is that the communication range is several meters to several tens of meters, which is short compared to other communication methods, so the power consumption is extremely low, and communication is possible for several years with only a coin-type battery. In addition, tags can be produced at low cost, and since major smartphones support the BLE standard, various applications are being created with smartphones. For example, Japanese Patent No. 5015423 discloses a technique for finding a predetermined beacon from the strength of the signal strength of the beacon.

As a prior art similar to the present invention described later, for example, the prior art described in JP-A-5-122388 can be mentioned. In this prior art, a technology related to a system that automatically performs meter reading of gas, water, electricity, etc. using a telephone line to save labor or rationalize meter reading work is shown. In such prior art, a method using a battery is often used for reasons such as measures against a power failure or wiring work of a power supply. Further, when a battery is used, various measures have been taken to reduce the current consumption as much as possible in order to extend the battery life. Then, in order to notify the administrator of the battery life, the battery voltage is constantly or periodically monitored, and when the battery voltage drops to a predetermined voltage, this is detected and notified by a display means or a reporting means. The technology to do is described.

Further, Japanese Patent Application Laid-Open No. 2009-148604 describes an example in which a solar power supply device is used as a power source for a communication system and a lithium battery is used as a backup power source for the solar power supply device.

Japanese Unexamined Patent Publication No. 2009-118504 describes a device for notifying a monitoring center of a battery remaining amount warning via a ready-made communication device that does not have a backup power remaining amount notification function. Further, Japanese Patent Application Laid-Open No. 2012-023656 describes a method for notifying a monitoring center of an abnormality in a solar power supply device.

Further, Japanese Patent Application Laid-Open No. 2000-187791 discloses an example of an independent power supply system for communication used in a bus location system or the like.

Japanese Unexamined Patent Publication No. 5-122388 Japanese Unexamined Patent Publication No. 2009-148604 Japanese Unexamined Patent Publication No. 2009-118504 Japanese Unexamined Patent Publication No. 2012-023656 Japanese Patent No. 5015423 Japanese Unexamined Patent Publication No. 2000-187791

An object of the present invention is to provide an optimum backup power supply system for an LPWA communication base station in a society in which LPWA communication is sufficiently widespread, and to connect a backup power supply that communicates with the LPWA communication base station to various terminals. This is to provide a system capable of collecting information on various terminals by LPWA communication.

The backup power supply technology using a battery, the battery monitoring technology, and the technology related to the communication system disclosed in the prior art literature are all excellent technologies, but as a result of diligent research by the inventors, the following ( It was found that the problems a) to (h) exist.
(A) In order for the monitoring center to grasp the remaining amount information of the battery of the backup power supply, the communication device to be backed up has a special function described in JP-A-2009-118504 or JP-A-2012-023656. Therefore, there is a problem that it is necessary to modify the communication device according to the backup power supply.
(B) In order to solve this problem, as shown in FIG. 1, when a method of providing the backup power supply with a communication function conforming to the TCP / IP protocol, which is a general communication method, is adopted, the backup power supply Not only is the cost increased, but there is also the problem that a new route control device for communication such as a switching hub or router is required.
(C) Further, as the number of such devices increases, the amount of power that must be backed up increases, and the amount of batteries in the backup power supply must be increased, which causes a problem that the cost of the backup power supply increases. It was.
(D) Further, the backup power input terminals of the devices to be backed up are not usually unified, and there is a problem that various terminals must be prepared in order to connect the backup power supply.
(E) Furthermore, although a 100V power supply is generally used as the power supply for driving the backup power supply, a special qualification is required because the 100V power supply is laid at a predetermined location on a telephone pole or an outer wall of a building. There was a problem that electrical work had to be carried out by a person who owns (electrician, etc.).
(F) Further, when the backup power source is installed in a place where the power source from the grid power grid cannot be secured, it is also possible to use a power generation device using natural energy such as a solar cell or wind power generation as the main power source. However, natural energy is extremely unstable due to the weather and surrounding terrain, so in order to use it as the main power source for equipment that requires reliability, such as LPWA communication equipment, the power generation status is remotely controlled. Need to monitor. In this case as well, as described in (a), there is a problem that it is necessary to modify the communication device according to the backup power supply.
(G) Further, Japanese Patent Application Laid-Open No. 2009-148604 uses a solar power supply as a power source for the communication system, a capacitor as a main power source for the solar power supply, and a lithium battery (primary battery) as a backup power source. An example of adopting is described. When a capacitor is used as a main power source in this way, there is a problem that the capacity is small and the battery is expensive as compared with a secondary battery. Further, in the case of a capacitor, there is almost no deterioration due to repeated charging / discharging, but in a secondary battery such as a lithium ion battery, the performance is deteriorated due to repeated charging / discharging. Therefore, it is necessary to remotely monitor the battery information of the secondary battery in addition to the battery level information of the primary battery such as the lithium battery. In this case as well, as described in (a), there is a problem that it is necessary to modify the communication device according to the backup power supply.

As an application example of the communication system of the present invention, a communication system for a bus location system as described in Japanese Patent Application Laid-Open No. 2000-187791 can be mentioned. The bus location system described in this prior art document is excellent, but details the communication method used between the weak radio wave transmitting device installed on the bus and the receiving device installed on the bus stop are described. Not. In addition, the details of the communication method used between the receiving device and the disaster prevention center, which is the place for remote monitoring, are not described, and further, the relationship between the two communication methods is not described. In addition, the inventors of the prior art document have clarified the following problems while diligently studying to construct an optimum bus location system using LPWA communication. That is,
(H) Generally, in LPWA communication, communication from a high-speed mobile body is difficult, and even if communication from a high-speed mobile body is possible, there is a problem that the communication circuit becomes complicated and expensive. Therefore, in the case of a system such as a bus location system, there is a problem that an LPWA transmitter cannot be installed on the bus. Furthermore, by equipping bus passengers with a weak radio wave transmitter, it is possible to remotely grasp the movement status of bus passengers, so that it is possible to know the return status of children and female passengers, which improves convenience. However, in such a case, when many passengers get off the bus, there is a problem that the LPWA communication cannot receive the information of all passengers. This is because LPWA communication usually has a slow data transmission rate of about several hundred bps, so that a large amount of information cannot be received in a short time.

As a result of diligent studies, the inventors have come up with the following (A) to (H) as methods for solving the above problems.
(A) In the present invention, the remaining amount information of the battery of the backup power source can be grasped at the monitoring center without modifying the communication device as in the conventional case. The present invention mainly targets a communication system including a backup power source for an LPWA communication base station in an IoT society. In such LPWA communication for IoT, the cost of the communication module is reduced, and the communication cost itself is also reduced. In such an IoT society, it is rational to regard the backup power supply as one IoT terminal through which the communication base station communicates, rather than as one component constituting the communication system of the communication base station. That is, it is rational to communicate with the backup power supply of the LPWA communication base station using LPWA communication in the same way as the method in which the LPWA communication base station communicates with the IoT terminal using the communication protocol of LPWA communication. Is.
(B) By using this method, it is not necessary for the backup power supply to maintain the communication function conforming to the TCP / IP protocol as shown in FIG. It is also possible to avoid the installation of a route control device for this purpose.
(C) Further, since it is not necessary to install a route control device, not only the problem that the battery in the backup power supply must be increased can be solved, but also the power consumption of the LPWA communication module is the power consumption of TCP / IP communication. Since it is smaller than electricity, it can be expected to have the effect of reducing the amount of batteries.
(D) Further, the power input terminals for the backup power supply of the device to be backed up are not usually unified, and there is a problem that various terminals must be prepared in order to connect the backup power supply. By setting the power input terminal of the backup power supply to the PoE standard (for example, IEEE 802.3af, IEEE 802.3at), it is necessary to change the output terminal shape of the backup power supply for the device corresponding to the PoE standard. It disappears.
(E) Further, even when a 100V power supply is used as a power supply for driving the backup power supply, power is supplied to the backup power supply via an Ethernet cable via a PoE injector or a PoE switching hub compatible with the PoE standard. This has the effect that power can be supplied only by laying an Ethernet cable that does not require specialized qualifications.

In the above (D) and (E), the method of performing the output and input of the backup power supply by PoE is described, but for example, if both the input and output correspond to the PoE standard, the effect is greater. For example, if you want to change the backup power supply to be installed away from the backup target device (backed up device), the length of the Ethernet cable between the backup power supply and the backup target device, or the Ethernet between the backup power supply and the PoE injector. It can be handled simply by changing the cable length.

In addition, by making the input and output of the backup power supply compatible with the PoE standard, it is possible not only to supply power via the Ethernet cable, but also to communicate between the backup target device and the monitoring center via the Ethernet cable. become.
(F) The methods shown in (A) and (B) can also be used in the case of remotely monitoring the power generation status when natural energy such as a solar cell or air volume power generation is used as the main power source.
(G) Further, in a backup power source using two types of batteries, a secondary battery and a primary battery, the battery information of the secondary battery and the primary battery is also remotely monitored, as shown in (A) and (B). The method can be used.

As an application example of the communication system of the present invention, a communication system for a bus location system can be mentioned, but as described above, it is generally difficult to communicate from a high-speed mobile body in LPWA communication. There is a problem that even if communication from a high-speed mobile body is possible, the communication circuit becomes complicated and expensive. Further, as described above, when a passenger has an LPWA communication device, it is assumed that the LPWA communication cannot be received. To solve this problem
(H) LPWA communication is performed between the LPWA communication base station and the communication system of the present invention, and the LPWA gateway constituting the communication system and the backup power supply or the independent power supply of the present invention are relative to each other as compared with LPWA communication. It is better to use a communication method with a high transmission rate. As this communication method, for example, it is preferable to use the BLE communication standard and assign tags corresponding to BLE to buses and passengers.

The means for solving the above-described problems will be summarized and described with reference to FIG. 3 as follows. That is,
(1) At least the battery remaining amount information is transmitted by at least the battery 102, the battery information detecting means (battery information detecting unit 103) for calculating the battery remaining amount information of the battery, and the first communication protocol. A communication system including a backup power supply system 100 having a battery information communication means (LPWA terminal communication unit 206) as a power source for communication with the terminal network by communication by the first communication protocol (LPWA communication). Communication protocol conversion means (mobile phone network communication unit) for converting information obtained through the communication means (LPWA communication unit 221) and the terminal network communication means from the first communication protocol to the second communication protocol. 322) and a wide area network communication means (mobile phone network communication unit 322) for transmitting the information converted by the communication protocol conversion means to the wide area communication network by the second communication protocol. Communication system.

Furthermore, by using wireless communication as described below, it is possible not only to reduce wiring work, but also to avoid obstacles due to disconnection of the communication line in the event of a disaster.
(2) The communication system according to (1), characterized in that it is provided with a battery information control communication means (LPWA terminal communication unit) corresponding to wireless communication.
(3) The communication system according to (2), characterized in that it is provided with a wide area network communication means corresponding to wireless communication.

Further, by using the following backup power supply system shown in FIG. 8, it is possible to realize a backup power supply system that can be used for general purposes and can reduce the construction cost. That is,
(4) In the communication system of (1), the backup power source is an independent power source 700 provided with power generation means (solar cell 710 in the case of FIG. 8), and the battery information communication means (battery information detection unit). A communication system characterized in that 203) transmits power generation information of the power generation means (solar cell 710 in the case of FIG. 8).
(5) In the communication system of (1), the batteries include a first battery composed of a secondary battery 711, a second battery composed of a primary battery 812, and the battery information communication means (battery information detection unit 203). ) Is a communication system characterized in that the battery information of the first battery (secondary battery 711) and the battery information of the second battery (primary battery 812) are transmitted.

In the description of FIG. 3, an LPWA base station is mentioned as a communication device for supplying power of a backup power source or an independent power source, but as shown in FIG. 7, an LPWA repeater is used instead of the LPWA base station. Even when used, the effect of the present invention is not lost. That is,
(6) The second communication protocol (LPWA communication in FIG. 7) is the same as the first communication protocol (LPWA communication in FIG. 7), and the data transmitted by the second communication protocol is the first. The communication system according to (1), wherein data indicating that the data is a duplicate of the data transmitted by the communication protocol is added.

Further, the configuration as shown in FIG. 9 may be used. That is,
(7) The data transmission rate by the first communication protocol (BLE communication in FIG. 9) is larger than the data transmission rate by the second communication protocol (LPWA communication in FIG. 9), and the communication protocol conversion means (FIG. 9). Then LPWA gateway 920)
The communication system according to (1), further comprising a data storage means (BLE data buffer unit 922 in FIG. 9) for storing data transmitted by the first communication protocol.

Further, by using the following backup power supply system shown in FIG. 5, it is possible to realize a backup power supply system that can be used for general purposes and can reduce the construction cost. That is,
(8) At least by the primary battery (lithium dioxide lithium battery 402), the battery information detecting means (battery information detecting unit 103) for calculating the battery remaining amount information of the primary battery, and the first communication protocol. A backup power supply system including a battery information communication means (LPWA terminal communication unit 206) for transmitting the remaining battery level information, and an output terminal and / or an input terminal corresponding to PoE (Power over Ethernet). A backup power supply system characterized by being equipped.

As described in detail above, according to the present invention, it is possible to simplify the configuration of the backup power supply system and communication system of a communication base station such as an LPWA communication base station, and further, a general-purpose backup power supply capable of supporting various devices. The system can be provided. In addition, by using an independent power source that connects power generation equipment such as solar cells and wind power generators to the backup power source, it is possible to configure a communication system that can operate even when power cannot be supplied from the grid interconnection network. it can. Further, by applying the communication system of the present invention to a bus location system, it is possible to provide a bus location system that is highly convenient and can be constructed at low cost.

It is a block diagram which shows the embodiment by the prior art. It is a block diagram which shows the communication system (optical line connection) of this invention. It is a block diagram which shows the communication system (mobile communication network connection) of this invention. It is a block diagram which shows the backup power supply system of this invention. It is a block diagram which shows the application example of the backup power supply system of this invention. It is a block diagram which shows the application example of the backup power supply system of this invention. It is a block diagram which shows the communication system of this invention. It is a block diagram which shows the communication system of this invention. It is a block diagram which shows the communication system of this invention. It is a block diagram which shows the application example of the communication system of this invention.

Prior to explaining the backup power supply system of the present invention and the embodiment for implementing the communication system, the backup power supply system and the communication system according to the prior art will be described. FIG. 1 is a block diagram of a communication system 199 according to the prior art. The communication system 199 includes a backup power supply system 100, a communication device 120, a route control device 130, an optical line termination device 140, a communication cable 111 connecting them, and a power cable 112.

The backup power supply system 100 is supplied with power from the external power supply 110, and the battery remaining amount information of the battery 102 is transmitted to the wide area communication unit 106 via the battery information detection unit 103 and the battery system control unit 105. The battery level information is converted from the communication protocol inside the backup power supply system into the TCP / IP protocol by the wide area communication unit 106 and transmitted to the route control device 130 by the communication cable 111. The communication device 120 collects automatic meter reading information such as gas and water consumption required for automatic meter reading by communicating from the meter terminal group 160 with a protocol conforming to a wireless communication standard such as U bus air. Inside the communication device 120, a plurality of automatic meter reading information is converted into files as necessary and then transferred to the Ethernet communication unit 122 via the terminal network communication unit 121. The Ethernet communication unit 122 converts the automatic meter reading information from the communication protocol inside the communication device to the TCP / IP protocol and transfers it to the route control device 130. In the route control device 130, the route control of the battery remaining amount information transferred from the backup power supply system 100 and the automatic meter reading information transferred from the communication device 120 is performed and transferred to the optical line termination device 140. The optical line termination device 140 converts the TCP / IP protocol into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the remaining battery level information to the battery monitoring center 150 via the Internet.

Further, in a normal state, the backup power supply system 100, the communication device 120, the route control device 130, and the optical line termination device 140 are driven by the electric power from the external power supply 110. On the other hand, in the event of a power failure, the power switching unit 101 detects the power failure and switches to the power from the battery 102, and the backup power supply system 100, the communication device 120, the route control device 130, and the optical line termination device 140 can drive the battery 102. become.

Next, an embodiment of the communication system of the present invention will be described. FIG. 2 is a block diagram of the communication system 299 according to the present invention. The communication system 299 includes a backup power supply system 100, an LPWA communication base station 220, an optical network unit 140, a communication cable 111 connecting them, and a power cable 112.

The backup power supply system 100 is supplied with power from the external power supply 110, and the battery remaining amount information of the battery 102 is transmitted to the LPWA terminal communication unit 206 via the battery information detection unit 103 and the battery system control unit 105. The battery level information is converted from the communication protocol inside the backup power supply system into the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA communication base station 220 by LPWA communication. The LPWA communication base station 220 collects terminal information of various IoT terminals by LPWA communication from the LPWA terminal group 260. Inside the LPWA communication base station 220, the terminal information from a plurality of terminals and the battery level information from the backup power supply system are converted into files as necessary and then transferred to the Ethernet communication unit 122 via the LPWA communication unit 221. .. The Ethernet communication unit 122 converts the terminal information and the remaining battery level information from the communication protocol inside the communication device into the TCP / IP protocol and transfers it to the optical line termination device 140. The optical line termination device 140 converts the TCP / IP protocol into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the remaining battery level information to the battery monitoring center 150 via the Internet. Further, in this communication system, the power supply of the backup power supply system 100 can be controlled by an instruction from the battery monitoring center 150. Specifically, the output control unit 104 is controlled by transferring the output control information from the battery monitoring center 150 to the backup power supply system 100 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the LPWA communication base station 220 by remote control.

Further, in a normal state, the backup power supply system 100, the LPWA communication base station 220, and the optical line termination device 140 are driven by the electric power from the external power supply 110. On the other hand, in the event of a power failure, the power switching unit 101 detects the power failure and switches to the power from the battery 102 to drive the backup power supply system 100, the LPWA communication base station 220, and the optical network unit 140.

Further, another embodiment of the communication system of the present invention will be described. FIG. 3 is a block diagram of the communication system 299 according to the present invention. The communication system 299 is composed of a backup power supply system 100, an LPWA communication base station 220, and a power cable 112.

The backup power supply system 100 is supplied with power from the external power supply 110, and the battery remaining amount information of the battery 102 is transmitted to the LPWA terminal communication unit 206 via the battery information detection unit 103 and the battery system control unit 105. The battery level information is converted from the communication protocol inside the backup power supply system into the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA communication base station 220 by LPWA communication. The LPWA communication base station 220 collects terminal information of various IoT terminals by LPWA communication from the LPWA terminal group 260. Inside the LPWA communication base station 220, the terminal information from a plurality of terminals and the battery level information from the backup power supply system are converted into files as necessary and then transferred to the mobile phone network communication unit 322 via the LPWA communication unit 221. To do. The mobile phone network communication unit 322 converts the terminal information and the remaining battery level information from the communication protocol inside the communication device to the communication protocol of the mobile phone network such as 3G communication, LTE communication, and PHS communication, and converts it into the mobile phone communication base station 340. Forward. The mobile phone communication base station 340 converts the terminal information and the battery remaining amount information into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the battery remaining amount information to the battery monitoring center 150 via the Internet. Further, in this communication system, the power supply of the backup power supply system 100 can be controlled by an instruction from the battery monitoring center 150. Specifically, the output control unit 104 is controlled by transferring the output control information from the battery monitoring center 150 to the backup power supply system 100 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the LPWA communication base station 220 by remote control.

Further, in a normal state, the backup power supply system 100 and the LPWA communication base station 220 are driven by the electric power from the external power supply 110. On the other hand, in the event of a power failure, the power switching unit 101 detects the power failure and switches to the power from the battery 102, so that the backup power supply system 100 and the LPWA communication base station 220 can be driven by the power from the battery 102.

Further, an embodiment of the backup power supply system will be described. FIG. 4 is a block diagram of the backup power supply system 400 according to the present invention. The backup power supply system 400 of the present invention is composed of a PoE compatible power supply switching unit 401, a manganese dioxide lithium battery 402, a battery information detection unit 103, an output control unit 104, a battery system control unit 105, and an LPWA terminal communication unit 206.

In the backup power supply system 400, the power converted from AC to DC by the PoE injector 410 is supplied by the PoE compatible Ethernet cable 412. Power is supplied to the PoE injector 410 from the external power supply 110 via the 100V power cable 411. The battery level information of the lithium manganese dioxide battery 402 is transmitted to the LPWA terminal communication unit 206 via the battery information detection unit 103 and the battery system control unit 105. The battery level information is converted from the communication protocol inside the backup power supply system into the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA communication base station 220 by LPWA communication. The LPWA communication base station 220 collects terminal information of various IoT terminals by LPWA communication from the LPWA terminal group 260. Inside the LPWA communication base station 220, the terminal information from a plurality of terminals and the battery level information from the backup power supply system are converted into files as necessary and then transferred to the mobile phone network communication unit 322 via the LPWA communication unit 221. To do. The mobile phone network communication unit 322 converts the terminal information and the remaining battery level information from the communication protocol inside the communication device to the communication protocol of the mobile phone network such as 3G communication, LTE communication, and PHS communication, and converts it into the mobile phone communication base station 340. Forward. The mobile phone communication base station 340 converts the terminal information and the remaining battery level information into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the battery remaining amount information to the battery monitoring center 150 via the Internet. Further, in this backup power supply system, the power supply of the backup power supply system 400 can be controlled by an instruction from the battery monitoring center 150. Specifically, the output control unit 104 is controlled by transferring the output control information from the battery monitoring center 150 to the backup power supply system 400 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the LPWA communication base station 220 by remote control.

Further, in a normal state, the backup power supply system 400 and the LPWA communication base station 220 are driven by the power converted from AC to DC by the PoE injector 410 via the PoE compatible Ethernet cable 412. On the other hand, in the event of a power failure, the PoE-compatible power supply switching unit 401 detects the power failure and switches to the power from the manganese dioxide lithium battery 402. As a result, the backup power supply system 400 and the LPWA communication base station 220 can be driven by the electric power from the manganese dioxide lithium battery 402.

Further, an embodiment of the backup power supply system of the present invention will be described. FIG. 5 is a block diagram of the backup power supply system 400 according to the present invention. The backup power supply system 400 of the present invention is composed of a PoE compatible power supply switching unit 401, a manganese dioxide lithium battery 402, a battery information detection unit 103, an output control unit 104, a battery system control unit 105, and an LPWA terminal communication unit 206.

In the backup power supply system 400, the power converted from AC to DC by the PoE injector 410 is supplied by the PoE compatible Ethernet cable 412. Power is supplied to the PoE injector 410 from the external power supply 110 via the 100V power cable 411. The battery level information of the lithium manganese dioxide battery 402 is transmitted to the LPWA terminal communication unit 206 via the battery information detection unit 103 and the battery system control unit 105. The battery level information is converted from the communication protocol inside the backup power supply system into the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA communication base station 220 by LPWA communication. The LPWA communication base station 220 transfers the battery remaining amount information to the battery monitoring center by any of the above methods.

In the present embodiment, the case where the backup power supply system 400 of the present invention is used to back up the power of the surveillance camera 570 in the event of a power failure will be described. Although a surveillance camera is taken as an example in this embodiment, it does not necessarily have to be a surveillance camera, and any device such as a Wi-Fi access point, a monitor, or a telephone that is driven by PoE is applicable. Further, it is effective not only for supplying power using PoE but also for a device communicating with an Ethernet cable.

The surveillance camera 570 is composed of at least a camera unit 571, an image processing unit 572, an internal memory 573, and a PoE-compatible Ethernet communication unit 574, and power is supplied via the Ethernet cable 412. The image captured by the camera unit 571 is temporarily stored in the internal memory 573 as digital image information by the image processing unit 572. When the surveillance camera 570 is instructed to transmit digital image information from the video surveillance center 550 via the optical network unit 140, the PoE injector 410, and the backup power supply system 400, the PoE compatible Ethernet communication unit is transmitted from the internal memory 573. Digital image information is transmitted to the video monitoring center 550 via the 574, the backup power supply system 400, the PoE injector 410, and the optical network unit 140. The amount of data that can be stored in the internal memory 573 is limited, and images are usually stored for several hours to several days.

Normally, the backup power supply system 400 and the surveillance camera 570 are driven by the power converted from AC to DC by the PoE injector 410 via the PoE compatible Ethernet cable 412. On the other hand, in the event of a power failure, the PoE-compatible power supply switching unit 401 detects the power failure and switches to the power from the manganese dioxide lithium battery 402. As a result, the backup power supply system 400 and the surveillance camera 570 can be driven by the electric power from the manganese dioxide lithium battery 402. At this time, it is not possible to communicate with the video monitoring center 550, but since the video captured by the surveillance camera 570 is stored in the internal memory 573, it is possible to check the video during a power failure when the power is restored. Further, in this backup power supply system, the power supply of the backup power supply system 400 can be controlled by an instruction from the video monitoring center 550. Specifically, the output control unit 104 is controlled by transferring the output control information from the video monitoring center 550 to the backup power supply system 400 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the surveillance camera 570 by remote control. It is also possible to transfer power failure information to the video monitoring center 550.

Further, an embodiment of the backup power supply system of the present invention will be described. FIG. 6 is a block diagram of the backup power supply system 400 according to the present invention. The backup power supply system 400 of the present invention is composed of a PoE compatible power supply switching unit 401, a manganese dioxide lithium battery 402, a battery information detection unit 103, an output control unit 104, a battery system control unit 105, and an LPWA terminal communication unit 206.

In the backup power supply system 400, the power converted from AC to DC by the PoE injector 410 is supplied by the PoE compatible Ethernet cable 412. Power is supplied to the PoE injector 410 from the external power supply 110 via the 100V power cable 411. The battery level information of the lithium manganese dioxide battery 402 is transmitted to the LPWA terminal communication unit 206 via the battery information detection unit 103 and the battery system control unit 105. The battery level information is converted from the communication protocol inside the backup power supply system into the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA communication base station 220 by LPWA communication. The LPWA communication base station 220 transfers the battery remaining amount information to the battery monitoring center by any of the above methods.

In the present embodiment, the case where the backup power supply system 400 of the present invention is used to back up the power of the surveillance camera 570 in the event of a power failure will be described. Although a surveillance camera is given as an example in the present embodiment, it does not necessarily have to be a surveillance camera, and any device such as a WiFi access point, a monitor, or a telephone that is driven by PoE is applicable. Further, it is effective not only for supplying power using PoE but also for a device communicating with an Ethernet cable.

The surveillance camera 570 is composed of at least a camera unit 571, an image processing unit 572, an internal memory 573, and a PoE-compatible Ethernet communication unit 574, and power is supplied via the Ethernet cable 412. The image captured by the camera unit 571 is temporarily stored in the internal memory 573 as digital image information by the image processing unit 572.

In this embodiment, a case where the surveillance camera 570 and the backup power supply system 400 are connected to the video surveillance center 550 by LPWA communication will be described. It is also possible to connect the video surveillance center 550 and the surveillance camera 570 via the backup power supply system 400 of the present invention. In this case, the PoE compatible power supply switching unit 601 having an Ethernet communication function can receive the video information from the surveillance camera 570 or the video log information (in the case of a surveillance camera of the type that detects a sensor and shoots). It is configured in. The video information or video log information received by the PoE compatible power supply switching unit 601 having an Ethernet communication function is transferred to the LPWA terminal communication unit 206 via the communication and output control unit 604 and the battery system control unit 105. , Transferred to the video surveillance center 550 via the LPWA communication base station.

Normally, the backup power supply system 400 and the surveillance camera 570 are driven by the power converted from AC to DC by the PoE injector 410 via the PoE compatible Ethernet cable 412. On the other hand, in the event of a power failure, the PoE compatible power supply switching unit 401 detects the power failure and switches to the power from the manganese dioxide lithium battery 402, and the backup power supply system 400 and the surveillance camera 570 can be driven by the power from the manganese dioxide lithium battery 402. become. Further, in this backup power supply system, the power supply of the backup power supply system 400 can be controlled by an instruction from the video monitoring center 550. Specifically, the communication and output control unit 604 is controlled by transferring the output control information from the video monitoring center 550 to the backup power supply system 400 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the surveillance camera 570 by remote control. It is also possible to transfer power failure information, error information of the surveillance camera 570, and the like to the video surveillance center 550.

Further, another embodiment of the communication system of the present invention will be described. FIG. 7 is a block diagram of the communication system 299 according to the present invention. The communication system 299 is composed of an independent power supply system 700, an LPWA repeater 720, and a power cable 112.

The independent power supply system 700 is supplied with power from the solar cell 710, and the battery information of the secondary battery 711 is transmitted to the LPWA terminal communication unit 206 via the battery information detection unit 203 and the battery system control unit 205. Battery information (hereinafter referred to as battery information) including solar cell power generation information is converted from the communication protocol inside the independent power supply system to the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA repeater 720 by LPWA communication. .. The LPWA repeater 720 collects terminal information of various IoT terminals from the LPWA terminal group 260 by LPWA communication. Inside the LPWA repeater 720, inside the LPWA relay processing unit 721, information indicating that the LPWA repeater 720 has transmitted is added to the terminal information from a plurality of terminals and the battery information from the independent power supply system 700. , Is transferred to the LPWA communication unit 221. In the LPWA communication unit 221, in order to prevent radio wave interference with the communication between the LPWA terminal communication unit 206 and the LPWA relay processing unit 721, a channel different from the channel used here is used, and the terminal information is sent to the LPWA communication base station 220. To transfer. The LPWA communication base station 220 converts the terminal information and the battery information into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the battery information to the battery monitoring center 150 via the Internet. Further, in this communication system, the power supply of the independent power supply system 700 can be controlled by an instruction from the battery monitoring center 150. Specifically, the charge / discharge switching unit 702 is controlled by transferring the output control information from the battery monitoring center 150 to the independent power supply system 700 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the LPWA repeater 720 by remote control.

When the power generation amount of the solar cell 710 is larger than the power consumption of the communication system 299, the independent power supply system 700 and the LPWA repeater 720 are driven by the power from the solar cell 710, and further, with respect to the secondary battery 711. Charge. On the other hand, when the amount of power generated by the solar cell 710 is not sufficient in rainy weather or at night, the charge / discharge switching unit 702 detects a decrease in the amount of power generation, stops charging the secondary battery 711, and switches to discharging. As a result, the independent power supply system 700 and the LPWA repeater 720 can be driven by the electric power from the secondary battery 711.

Further, another embodiment of the communication system of the present invention will be described. FIG. 8 is a block diagram of the communication system 299 according to the present invention. The difference from FIG. 7 is that the primary battery 812 is added, and the parts not related to this perform the same operation.

The independent power supply system 700 is supplied with power from the solar battery 710, and the battery information of the secondary battery 711 and the primary battery 812 and the solar power generation information (hereinafter referred to as battery information) are the battery information detection unit 203 and the battery system control unit. It is transmitted to the LPWA terminal communication unit 206 via 205. The battery information is converted from the communication protocol inside the independent power supply system into the LPWA communication protocol by the LPWA terminal communication unit 206 and transmitted to the LPWA repeater 720 by LPWA communication. The LPWA repeater 720 collects terminal information of various IoT terminals from the LPWA terminal group 260 by LPWA communication. Inside the LPWA repeater 720, inside the LPWA relay processing unit 721, information indicating that the LPWA repeater 720 has transmitted is added to the terminal information from a plurality of terminals and the battery information from the independent power supply system 700. , Is transferred to the LPWA communication unit 221. In the LPWA communication unit 221, in order to prevent radio wave interference with the communication between the LPWA terminal communication unit 206 and the LPWA relay processing unit 721, a channel different from the channel used here is used, and the terminal information is sent to the LPWA communication base station 220. To transfer. The LPWA communication base station 220 converts the terminal information and the battery information into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the battery information to the battery monitoring center 150 via the Internet. Further, in this communication system, the power supply of the independent power supply system 700 can be controlled by an instruction from the battery monitoring center 150. Specifically, the charge / discharge switching unit 702 is controlled by transferring the output control information from the battery monitoring center 150 to the independent power supply system 700 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the LPWA repeater 720 by remote control.

When the power generation amount of the solar cell 710 is larger than the power consumption of the communication system 299, the independent power supply system 700 and the LPWA repeater 720 are driven by the power from the solar cell 710, and further, with respect to the secondary battery 711. Charge. On the other hand, when the amount of power generated by the solar cell 710 is not sufficient in rainy weather or at night, the charge / discharge switching unit 702 detects a decrease in the amount of power generation, stops charging the secondary battery 711, and switches to discharging. As a result, the independent power supply system 700 and the LPWA repeater 720 can be driven by the electric power from the secondary battery 711. Furthermore, if a long-term non-power generation state that was not expected in the design continues, the power stored in the secondary battery 711 will be used up. In this case, the charge / discharge switching unit 702 detects that the remaining amount of the secondary battery is low, stops the discharge from the secondary battery, and switches to the discharge from the primary battery 812. As a result, the independent power supply system 700 and the LPWA repeater 720 can be driven by the electric power from the primary battery 812. Further, since the situation of consuming the electric power of the primary battery 812 is an emergency situation, the fact that the electric power of the primary battery 812 is consumed is promptly transmitted to the battery monitoring center 150 by the method described above. As a result, it is possible to take measures such as battery replacement according to the instruction from the battery monitoring center without stopping the operation of this communication system.

Further, another embodiment of the communication system of the present invention will be described. FIG. 9 is a block diagram of the communication system 299 according to the present invention. The difference from FIG. 8 is that the LPWA communication unit 206 of the independent power supply system 700 is changed to the BLE terminal communication unit 906, and further, the LPWA gateway 920 is changed instead of the LPWA repeater 720. Further, the LPWA terminal group 260 has been changed to the BLE terminal group 960. By doing so, for example, the bus location system described above can be configured.

The overall operation will be described. The independent power supply system 700 is supplied with power from the solar battery 710, and the battery information of the secondary battery 711 and the primary battery 812 and the solar power generation information (hereinafter referred to as battery information) are the battery information detection unit 203 and the battery system control unit. It is transmitted to the BLE terminal communication unit 906 via 205. The battery information is converted from the communication protocol inside the independent power supply system into the BLE communication protocol by the BLE terminal communication unit 906 and transmitted to the LPWA gateway 920 by the BLE communication. The LPWA gateway 920 collects terminal information of various IoT terminals from the BLE terminal group 960 by BLE communication. Inside the LPWA gateway 920, the terminal information from the BLE terminal group and the battery information from the independent power supply system 700 are transferred to the BLE data buffer unit 922 inside the BLE communication unit 921. The role of the BLE data buffer unit is to adjust the traffic of data because the transfer rate of BLE communication is faster than the transfer rate of LPWA communication. The terminal information and battery information stored in the BLE data buffer unit 922 are transferred to the LPWA communication base station 220 via the LPWA communication unit 221. The LPWA communication base station 220 converts the terminal information and the battery information into a predetermined protocol specified by the optical line operator, and transfers the terminal information and the battery information to the battery monitoring center 150 via the Internet. Further, in this communication system, the power supply of the independent power supply system 700 can be controlled by an instruction from the battery monitoring center 150. Specifically, the charge / discharge switching unit 702 is controlled by transferring the output control information from the battery monitoring center 150 to the independent power supply system 700 via the LPWA communication base station 220. For example, it can be used when it is necessary to restart the LPWA repeater 720 by remote control.

When the power generation amount of the solar cell 710 is larger than the power consumption of the communication system 299, the independent power supply system 700 and the LPWA repeater 720 are driven by the power from the solar cell 710, and further, with respect to the secondary battery 711. Charge. On the other hand, when the amount of power generated by the solar cell 710 is not sufficient in rainy weather or at night, the charge / discharge switching unit 702 detects a decrease in the amount of power generation, stops charging the secondary battery 711, and switches to discharging. As a result, the independent power supply system 700 and the LPWA repeater 720 can be driven by the electric power from the secondary battery 711. Furthermore, if a long-term non-power generation state that was not expected in the design continues, the power stored in the secondary battery 711 will be used up. In this case, the charge / discharge switching unit 702 detects that the remaining amount of the secondary battery is low, stops the discharge from the secondary battery, and switches to the discharge from the primary battery 812. As a result, the independent power supply system 700 and the LPWA repeater 720 can be driven by the electric power from the primary battery 812. Further, since the situation of consuming the electric power of the primary battery 812 is an emergency situation, the fact that the electric power of the primary battery 812 is consumed is promptly transmitted to the battery monitoring center 150 by the method described above. As a result, it is possible to take measures such as battery replacement according to the instruction from the battery monitoring center without stopping the operation of this communication system.

In the above embodiment, by further configuring the system as shown in FIG. 10, a highly convenient bus location system can be configured at low cost. That is, the LPWA gateway 920 and the independent power supply system 700 constituting the communication system of the present invention are installed at all the bus stops 1002 on the bus route. On the other hand, a BLE terminal 1060 that communicates with the LPWA gateway 920 is installed on the bus 1001. Bus information such as the vehicle number, time, and number of passengers of the bus is continuously transmitted from the BLE terminal 1060. When bus 1001 passes or stops near a bus stop 1002, bus information is received by the LPWA gateway 920. The bus information is transmitted to the LPWA communication base station 220 by LPWA communication, converted into a predetermined protocol specified by the optical line operator, and transferred to the bus information center 1050 via the Internet. The bus user group 1003 can check the progress of the bus 1001 by accessing the bus information center 1050 via their own smartphones or the like.

The present invention relates to a communication system including an LPWA communication base station and a backup power supply system, and a backup power supply system, but is not necessarily limited to the LPWA communication base station and operates with relatively low power consumption. It can also be applied to a communication system consisting of various communication access points and their backup power supply system. Further, the backup power supply system of the present invention does not necessarily have to be a backup power supply for LPWA communication base stations and access points of various communication methods. For example, a security camera, lighting, monitor, and switching hub compatible with PoE power reception. It can also be used as a backup power source for devices that support PoE power reception such as routers. Further, the backup power supply system of the present invention can receive power supply from a PoE injector, which is a PoE power supply device, or a PoE switching hub. Furthermore, by applying it to a bus location system, it is possible to provide convenience to bus users.

100 Backup power supply system 101 Power switching unit 102 Battery 103 Battery information detection unit 104 Output control unit 105 Ethernet control unit 106 Ethernet communication unit 110 External power supply 111 Communication cable 112 Power cable 120 Communication device 121 Terminal network communication unit 122 Ethernet communication Unit 130 Route control device 140 Optical line termination device 150 Battery monitoring center 160 Meter terminal group 199 Communication system by advanced technology 206 LPWA terminal communication unit 220 LPWA communication base station 221 LPWA communication unit 260 LPWA terminal group 299 Communication system 322 mobile device of the present invention Telephone network communication unit 340 Mobile phone communication base station 400 Backup power supply system of the present invention 401 PoE compatible power supply switching unit 402 Manganese dioxide lithium battery 410 PoE injector 411 100V power cable 412 PoE compatible Ethernet cable 550 Video monitoring center 570 Surveillance camera 571 camera Unit 572 Image processing unit 573 Internal memory 574 PoE compatible Ethernet communication unit 601 PoE compatible power supply switching unit 604 with Ethernet communication function Communication and output control unit 700 Independent power supply system 702 Charging / discharging switching unit 710 Solar battery 711 Secondary battery 720 LPWA repeater 721 LPWA relay processing unit 812 primary battery 920 LPWA gateway 921 BLE communication unit 922 BLE data buffer unit 960 BLE terminal group 1001 bus 1002 bus stop 1003 bus user group 1050 bus information center 1060 BLE terminal

Claims (5)

A battery, that having a, a battery information communicating means for transmitting the battery remaining amount information wirelessly by the the battery information detection means for calculating the battery remaining amount information of the battery, the first communication protocol electrostatic A communication system including a source system and a terminal network communication means that communicates with the terminal network according to the first communication protocol.
The battery level information according to the first communication protocol is received by the terminal network communication means, and the battery level information is received.
A communication protocol conversion means for converting the battery level information obtained from the terminal network communication means from the first communication protocol to the second communication protocol.
A wide area network communication means for transmitting the battery remaining amount information to the wide area network according to the second communication protocol, and
A communication system characterized by comprising. The communication system according to claim 1 , wherein the wide area network communication means communicates wirelessly. The communication system according to claim 1, wherein the power generation system further includes power generation means, and the battery information communication means transmits power generation information of the power generation means. A battery, that having a, a battery information communicating means for transmitting the battery remaining amount information wirelessly by the the battery information detection means for calculating the battery remaining amount information of the battery, the first communication protocol electrostatic A communication system including a source system and a terminal network communication means that communicates with the terminal network according to the first communication protocol.
The battery level information according to the first communication protocol is received by the terminal network communication means, and the battery level information is received.
A repeater that adds data indicating that it is a copy of the data transmitted by the first communication protocol to the battery remaining amount information obtained from the terminal network communication means.
Communication system comprising: a. The communication system according to claim 4 , wherein the power generation system further includes power generation means, and the battery information communication means transmits power generation information of the power generation means.

Images