JPWO2016152264A1 - Power supply - Google Patents

Abstract

A power supply device capable of supplying an appropriate amount of electric power with an appropriate circuit scale according to an installation position and situation. A unit power generation unit 600 constituting a power supply unit 60 includes a photovoltaic panel 601, a charging unit 602, a storage battery 603, rectifier circuits 604 and 605, a DC voltage input terminal Pin, and a DC voltage output terminal Pout. The charging unit 602 converts the electric charge generated by the photovoltaic panel 601 into a DC voltage and charges the storage battery 603. The rectifier 605 is inserted into a DC power line connecting the DC voltage input terminal Pin and the DC voltage output terminal Pout. The rectifier 605 rectifies the current from the DC voltage input terminal Pin to the DC voltage output terminal Pout. The rectifier 604 is connected between the DC power line on the DC voltage output terminal Pout side of the rectifier 605 and the storage battery 603. The rectifier 604 rectifies the current from the storage battery 603 to the DC voltage output terminal Pout. [Selection] Figure 3

Description

  The present invention relates to a power supply device that supplies power to a functional unit using solar power generation.

  Various systems for observing landslides have been devised from the viewpoint of disaster prevention. For example, the observation data collection system described in Patent Literature 1 includes a plurality of analysis devices, a plurality of relay devices, and an aggregation device.

  A plurality of analysis devices are linked to one relay device. The analysis devices linked to each relay device are different. The aggregation device is linked to a plurality of relay devices.

  The relay device acquires observation data of a plurality of analysis devices to which the relay device is linked. The relay device collects the acquired plurality of observation data and transmits it to the aggregation device.

  The analysis device is disposed at a position away from the relay device and the aggregation device, and may be disposed at a position where power supply from the commercial power source cannot be received. In this case, the analysis device must generate power with its own device, and generate and transmit observation data using the generated power.

JP 2004-185459 A

  However, the required amount of power often varies depending on the position where the analyzer is arranged. For example, if the communication environment for wireless communication is good, the power related to communication is small, but if the communication environment for wireless communication is bad, the power related to communication is large.

  In addition, when the power generation of the analysis device is performed by solar power generation, the power generation amount varies depending on the environment such as sunshine. Therefore, the required number of photovoltaic power generation panels differs depending on the arrangement position. Here, there is an analysis device in which the power generation function unit is increased if sufficient power is supplied to all the analysis devices. On the other hand, when the power generation function unit of the analysis device with the lowest power consumption is used, there is an analysis device that stops functioning and cannot transmit observation data. In addition, if the power generation function unit is individually formed in accordance with each analysis device, design and manufacturing costs increase. In addition, the amount of power required may change due to changes over time, and even if a power generation function unit is individually formed for each analysis device, appropriate power supply is not always possible.

  Accordingly, an object of the present invention is to provide a power supply device that can supply an appropriate amount of power with an appropriate circuit scale according to the installation position and situation.

  The power supply device of the present invention includes a photovoltaic panel, a storage battery, and a charging unit. The charging unit converts the electric charge generated by the photovoltaic panel into a DC voltage and charges the storage battery. The power supply device further includes a DC voltage input terminal to which a DC voltage is input from the outside, and a DC voltage output terminal that outputs the DC voltage. The power supply device further includes a first rectifier and a second rectifier. The first rectifier is inserted into a DC power line connecting the DC voltage input terminal and the DC voltage output terminal. The first rectifier rectifies current from the DC voltage input terminal to the DC voltage output terminal. The second rectifier is connected between the DC power line on the DC voltage output terminal side of the first rectifier and the storage battery. The second rectifier rectifies current from the storage battery to the DC voltage output terminal.

  In this configuration, the circuit composed of the functional units is used as a unit power generation unit, and the number corresponding to the amount of power to be supplied is prepared. Connect the DC voltage output terminal of the front unit power generation unit to the DC voltage input terminal of the rear stage. That is, a plurality of unit power generation units are cascade-connected. Thereby, it is possible to supply an appropriate amount of power with an appropriate circuit scale.

  The power supply device of the present invention includes a data input terminal, a data output terminal, and a data communication bus that connects the data input terminal and the data output terminal. The charging unit is connected to the data communication bus.

  In this configuration, the operating status of the charging unit can be acquired from the outside for each unit power generation unit. Thereby, the operation state of the whole power supply apparatus can be observed.

  According to the present invention, it is possible to supply an appropriate amount of power with an appropriate circuit scale according to the installation position and situation.

The block diagram which shows the structure of the observation system containing the electric power supply apparatus which concerns on the 1st Embodiment of this invention. The block diagram of the electric power supply part which concerns on the 1st Embodiment of this invention. The block diagram of the unit power generation unit which comprises the electric power supply part which concerns on the 1st Embodiment of this invention. The block diagram of the unit electric power generation unit which comprises the electric power supply part which concerns on the 2nd Embodiment of this invention. The block diagram of the electric power supply part which concerns on the 2nd Embodiment of this invention.

  An observation system including a power supply device according to a first embodiment of the present invention will be described with reference to the drawings. Note that the observation system shown in the present embodiment is used in, for example, a landslide detection system. However, the configuration of the present embodiment is applied to a system that analyzes a predetermined phenomenon using observation data acquired at a remote place, that is, a system that cannot use a commercial power source and uses photovoltaic power generation. be able to.

  FIG. 1 is a block diagram showing a configuration of an observation system including a power supply apparatus according to the first embodiment of the present invention.

  The observation system 10 includes a slave unit (observation data transmission device) 20, a master unit (observation data relay device) 30, a file server 40, an analysis device 50, and a communication network 100.

  The subunit | mobile_unit 20 is arrange | positioned at an observation position. When there are a plurality of observation positions, the slave unit 20 is arranged for each observation position.

  The subunit | mobile_unit 20 is provided with the control part 21, the GNSS receiver 22, the GNSS antenna 23, the wireless LAN control part 24, the antenna 25 for wireless LAN, the memory 26, the notification part 27, and the electric power supply part 60. The subunit | mobile_unit 20 is arrange | positioned in the observation object position. It is preferable that the subunit | mobile_unit 20 is arrange | positioned in the open sky environment as much as possible. In the case of a landslide detection system, the observation target position is a place where a commercial power source is difficult to use such as in the mountains or where the commercial power source cannot be used. Therefore, the power supply unit 60 of the slave unit 20 generates a DC voltage by self-power generation, and each functional unit of the slave unit 20 (the control unit 21, the GNSS receiver 22, the wireless LAN control unit 24, the notification unit 27). To supply power. The notification unit 27 can be omitted.

  The control unit 21 performs overall control of the slave unit 20. The control unit 21 controls observation data storage and uploading. Specific contents of observation data storage and upload control in the control unit 21 will be described later.

  The GNSS receiver 22 is connected to the control unit 21. The GNSS receiver 22 generates observation data from the GNSS signal received by the GNSS antenna 23. The GNSS receiver 22 outputs the generated observation data to the control unit 21.

  GNSS is an abbreviation for Global Navigation Satellite System, and includes GPS (Global Positioning System), GLONASS (Global Navigation Satellite System), Galileo, and the like.

  The observation data generated by the GNSS receiver 22 is data obtained from the reception result of GNSS signal (data obtained by acquisition and tracking), which is used for analysis and detection of landslide such as carrier phase.

  The GNSS receiver 22 demodulates the navigation message from the GNSS signal. The GNSS receiver 22 acquires time data from the navigation message. Note that the GNSS receiver 22 may measure the slave unit 20 from the tracking result of the GNSS signal. In this case, the observation data includes a positioning result.

  The wireless LAN control unit 24 is connected to the wireless LAN antenna 25 and the control unit 21. The wireless LAN control unit 24 performs wireless communication with the wireless LAN AP 32 via the wireless LAN antenna 25 and the wireless LAN antenna 31 according to a predetermined protocol. The wireless LAN control unit 24 converts the observation data given from the control unit 21 into a wireless communication protocol and transmits it from the wireless LAN antenna 25. Further, the wireless LAN control unit 24 converts the remote setting data received from the base unit 30 received by the wireless LAN antenna 25 into a protocol and outputs it to the control unit 21.

  The memory 26 is connected to the control unit 21. The memory 26 temporarily stores observation data.

  The notification unit 27 is connected to the control unit 21. The notification unit 27 is configured by a simple display element such as an LED. The notification unit 27 is driven in a predetermined display mode by a notification signal from the control unit 21.

  The base unit (observation data relay device) 30 includes a wireless LAN antenna 31, a wireless LAN AP (access point) 32, a router 33, and a power supply unit 60. In the case of a landslide detection system, the master unit 30 may also be arranged in a place where commercial power is difficult to use or where commercial power is not available. In this case, the power supply unit 60 of the base unit 30 generates a DC voltage by self-power generation and supplies power to each functional unit (wireless LANAP 32 and router 33) of the base unit. In addition, although the power supply part 60 of the main | base station 30 and the power supply part 60 of the subunit | mobile_unit 20 are attaching | subjecting the same code | symbol, the number of the built-in unit power generation units may not be the same so that it may mention later. Absent.

  The wireless LAN AP 32 performs wireless communication with the wireless LAN control unit 24 via the wireless LAN antenna 31 and the wireless LAN antenna 25 using a predetermined protocol. The wireless LAN AP 32 performs protocol conversion on the remote setting data acquired via the router 33 and transmits it from the wireless LAN antenna 31. The wireless LAN AP 32 converts the observation data received from the slave unit 20 received by the wireless LAN antenna 31 into a protocol and outputs it to the router 33.

  The router 33 connects the wireless LAN AP 32 to the network 100. That is, the router 33 performs protocol conversion between the wireless communication network between the parent device 30 and the child device 20 and the network 100. The router 33 transmits the observation data output from the wireless LAN AP 32 to the file server 40. The router 33 transmits a setting signal from the analysis device 50 connected via the network 100 to the wireless LAN AP 32.

  The file server 40 stores observation data transmitted from the parent device 30. Further, the file server 40 transmits observation data to the analysis device 50 in response to a read request from the analysis device 50.

  The analysis device 50 uses the observation data read from the file server 40 to generate detection data for the observation target. For example, if the observation system 10 is a landslide detection system, the position change and speed of each observation position are acquired from observation data, and a landslide is detected. The analysis device 50 transmits a setting signal to the parent device 30 and the child device 20. The setting signal is set by an operator using an operation input unit provided in the analysis device 50. The setting signal is set by the analysis device 50 based on the analysis results so far.

  FIG. 2 is a block diagram of the power supply unit according to the first embodiment of the present invention. FIG. 3 is a block diagram of a unit power generation unit constituting the power supply unit according to the first embodiment of the present invention.

  As shown in FIG. 2, the power supply unit 60 includes unit power generation units 610, 620, and 630. The unit power generation units 610, 620, and 630 have the configuration of the unit power generation unit 600 shown in FIG.

  As shown in FIG. 3, the unit power generation unit 600 includes a photovoltaic power generation panel 601, a charging unit 602, a storage battery 603, rectifiers 604 and 605, a DC voltage input terminal Pin, and a DC voltage output terminal Pout.

  The photovoltaic panel 601 is connected to the charging unit 602. Charging unit 602 is connected to storage battery 603. The storage battery 603 is connected to the DC voltage output terminal Pout via the rectifier 604 (second rectifier of the present invention). The DC voltage input terminal Pin and the DC voltage output terminal Pout are connected via a rectifier 605 (first rectifier of the present invention). The power transmission line on the DC voltage output terminal Pout side of the rectifier 604 and the power transmission line on the DC voltage output terminal Pout side of the rectifier 605 are connected.

  The photovoltaic panel 601 generates electric charge according to the amount of light irradiated. The charging unit 602 converts the charge generated by the photovoltaic panel into a DC voltage. The charging unit 602 converts the electric charge generated by the photovoltaic panel 601 into a DC voltage by performing MPPT control or the like. The charging unit 602 converts the converted DC voltage into a charging voltage for the storage battery 603 and supplies it to the storage battery 603. The storage battery 603 is charged by the charging voltage from the charging unit 602 and supplies a DC voltage to the DC voltage output terminal Pout via the rectifier 604.

  The rectifier 604 is configured in a circuit so that a current flows from the storage battery 603 to the DC voltage output terminal Pout. For example, the rectifier 604 includes a diode having an anode connected to the storage battery 603 and a cathode connected to the DC voltage output terminal Pout.

  The rectifier 605 has a circuit configured such that a current flows from the DC voltage input terminal Pin to the DC voltage output terminal Pout. For example, the rectifier 605 includes a diode having an anode connected to the DC voltage input terminal Pin and a cathode connected to the DC voltage output terminal Pout.

  With this configuration, the unit power generation unit 600 has sufficient power stored in the storage battery 603, and the voltage that can be output from the storage battery 603 is higher than the DC voltage input from the DC voltage input terminal Pin. For example, a DC voltage (DC power) is supplied from the storage battery 603 to the DC voltage output terminal Pout.

  On the other hand, in the unit power generation unit 600, if the amount of power stored in the storage battery 603 is insufficient and the voltage that can be output from the storage battery 603 is lower than the DC voltage input from the DC voltage input terminal Pin, the DC from the DC voltage input terminal Pin A DC voltage (DC power) is supplied to the voltage output terminal Pout.

  The power supply unit 60 connects the unit power generation units 600 (610, 620, 630) having such a configuration as shown in FIG.

  Specifically, the DC voltage output terminal Pout of the unit power generation unit 610 is connected to each functional unit of the slave unit 20. The DC voltage output terminal Pout of the unit power generation unit 620 is connected to the DC voltage input terminal Pin of the unit power generation unit 610. The DC voltage output terminal Pout of the unit power generation unit 630 is connected to the DC voltage input terminal Pin of the unit power generation unit 630. In other words, the unit power generation units 630, 620, and 610 are cascade-connected in this order.

  By setting it as such a structure, according to the electric energy required of the subunit | mobile_unit 20, the number of the unit power generation units which comprise the electric power supply part 60 can be adjusted suitably. That is, the number of unit power generation units to be cascade-connected is reduced for the slave unit 20 with a small amount of power consumption. On the other hand, the number of unit power generation units to be cascade-connected is increased for the slave unit 20 that consumes a large amount of power.

  Thereby, the circuit configuration is not increased, and the power supply unit 60 that can supply a necessary amount of power can be installed for each slave unit.

  In addition, by using the configuration of the present embodiment, it is not necessary to replace the entire power supply unit 60 when the amount of power required over time changes, and it is only necessary to adjust the number of unit power generation units. In particular, when the required amount of power increases, it is necessary to increase the amount of power generation. However, by using the configuration of the present embodiment, a required number of unit power generation units may be added, and the specifications of the power supply unit 60 are as follows. Can be easily optimized. In particular, in the landslide detection system, the handset 20 is often arranged in a mountain where the work is not easy. However, by using this configuration, the power supply unit 60 corresponding to the amount of power of the handset 20 can be easily worked. realizable.

  Further, by using the configuration of the present embodiment, it is possible to appropriately supply power according to changes in the installed environment. Thereby, the operation time of the slave unit can be made as long as possible, and the transmission of the observation data can be continued. For example, even if it becomes a situation where power generation and charging cannot be performed due to snow or the like, the supply power is automatically adjusted by the cascade connection of the plurality of unit power generation units described above, and appropriate power supply can be realized. .

  In the above description, the power supply unit 60 of the slave unit 20 has been described, but the power supply unit 60 of the master unit 30 also has the same configuration. As a result, the power supply unit 60 that can supply the necessary amount of power to the parent device 30 without increasing the circuit configuration can be realized.

  Next, an observation system including a power supply apparatus according to the second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram of a unit power generation unit constituting the power supply unit according to the second embodiment of the present invention. FIG. 5 is a block diagram of a power supply unit according to the second embodiment of the present invention.

  In the observation system according to the present embodiment, the configuration of the power supply unit 60A is different from that of the observation system according to the first embodiment.

  As shown in FIG. 5, the power supply unit 60A includes a plurality of unit power generation units 610A, 620A, and 630A. Unit power generation units 610A, 620A, and 630A have the same configuration as unit power generation unit 600A shown in FIG.

  The unit power generation unit 600A includes a data input terminal PinD, a data output terminal PoutD, and a data communication bus 606 with respect to the unit power generation unit 600 according to the first embodiment. The data input terminal PinD and the data output terminal PoutD are connected by a data communication bus 606. The data communication bus 606 is realized by an I2C bus, for example.

  Charging unit 602 is connected to data communication bus 606.

  The power supply unit 60A connects the unit power generation units 600A (610A, 620A, 630A) having such a configuration as shown in FIG.

  Specifically, the DC voltage output terminal Pout of the unit power generation unit 610A is connected to each functional unit of the slave unit 20. The DC voltage output terminal Pout of the unit power generation unit 620A is connected to the DC voltage input terminal Pin of the unit power generation unit 610. The DC voltage output terminal Pout of the unit power generation unit 630A is connected to the DC voltage input terminal Pin of the unit power generation unit 630A. In other words, the power supply function units in the unit power generation units 630A, 620A, and 610A are cascade-connected in this order.

  Furthermore, the data output terminal PoutD of the unit power generation unit 610 </ b> A is connected to the control unit 21 of the slave unit 20. The data output terminal PoutD of the unit power generation unit 620A is connected to the data input terminal PinD of the unit power generation unit 610A. The data output terminal PoutD of the unit power generation unit 630A is connected to the data input terminal PinD of the unit power generation unit 620A. With this configuration, the charging units 602 of the unit power generation units 610A, 620A, and 630A are connected to the control unit 21 via the data communication bus 606.

  With this configuration, the operation of the charging unit 602 of each unit power generation unit 610A, 620A, 630A can be monitored. For example, the MPPT control state of each charging unit 602, the charge amount of the storage battery 603, and the like can be monitored.

  Accordingly, for example, a configuration in which a control signal can be input to the rectifiers of the unit power generation units 610A, 620A, and 630A can be added, and the rectifiers can be controlled from the control unit 21. Thereby, furthermore, according to the state of each unit electric power generation unit 610A, 620A, 630A, a DC voltage can be stably supplied to the subunit | mobile_unit 20. FIG.

  The configuration of the present embodiment can also be applied to the parent device 30.

10: Observation system 20: Slave unit (observation data transmitter)
21: Control unit 22: GNSS receiver 23: GNSS antenna 24: Wireless LAN control unit 25: Wireless LAN antenna 26: Memory 27: Notification unit 30: Master unit (observation data relay device)
40: file server 50: analysis device 60: power supply unit 100: communication network 600, 610, 620, 630, 610A, 620A, 630A: unit power generation unit 601: photovoltaic power generation panel 602: charging unit 603: storage batteries 604, 605: Rectifier 606: Data communication bus

Claims (2)

Photovoltaic panels,
A storage battery,
A charging unit for converting the electric charge generated by the photovoltaic panel into a DC voltage and charging the storage battery;
A DC voltage input terminal to which a DC voltage is input from the outside;
A DC voltage output terminal for outputting a DC voltage;
A first rectifier inserted into a DC power line connecting the DC voltage input terminal and the DC voltage output terminal, and rectifying a current from the DC voltage input terminal to the DC voltage output terminal;
A second rectifier connected between a DC power line on the DC voltage output terminal side of the first rectifier and the storage battery and rectifying a current from the storage battery to the DC voltage output terminal;
A power supply device comprising: The power supply device according to claim 1,
A data input terminal;
A data output terminal;
A data communication bus connecting the data input terminal and the data output terminal,
The charging unit is connected to the data communication bus,
Power supply device.

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