JP2019170058A - Power supply device, method for managing power supply device, and program for power supply device - Google Patents

Abstract

To achieve a power supply device, a method for managing a power supply device, and a program for a power supply device enabling an automatic identification of a load device connected to the power supply device.SOLUTION: A power supply device is provided with: a power supply section for supplying a power to a load device connected to at least one output terminal; a current detection section for detecting the size of a current supplied from the power supply device to the load device in a predetermined time since the power is started to be supplied into the load device and for outputting waveform data showing the relation between the size of the current and the time; a waveform analysis section for outputting a waveform code signal including a waveform code created by extracting and numericalizing the characteristics of the waveform data; a storage section for associating the waveform data and an identification code and storing them for every one of the plurality of load devices each provided with an identification code; and an identification section for outputting the identification code associated with the waveform code when the waveform code of the load device connected to the output terminal and the waveform code stored in the storage section match together.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power supply device, a power supply device management method, and a power supply device program.

  When constructing an information system using an uninterruptible power supply (UPS), it is necessary to check whether the load device connected to the UPS is as designed. In general, this confirmation is performed by a person visually confirming the connection state of the power cable connecting the UPS and the load device.

  Japanese Patent Application Laid-Open No. 2004-228561 has a description regarding a power management technique.

JP 2012-170229 A

  In particular, in a rack-mounted system in which a plurality of UPSs and a plurality of load devices are mounted, a large-scale data center system, etc., connection of power cables becomes complicated.

  For this reason, if the power cable connection state is visually checked by a person, the power cable connection may be mistaken during system construction or maintenance work. There was a risk of accidents or accidents that could occur if it was accidentally started.

  Furthermore, if an unscheduled load device is mistakenly connected to the UPS, an output current exceeding the UPS specification flows, and there is a risk that a UPS failure or a system failure occurs.

  In view of the above-described problems, an object of the present invention is to provide a power supply device that automatically identifies a load device connected to a UPS without relying on human visual inspection, a power supply management method, and a program for the power supply device There is to do.

  In order to achieve the above object, a power supply device according to the present invention includes a power supply unit that supplies power to a load device connected to at least one output terminal, and a predetermined amount after power supply to the load device is started. A current detection unit that detects the magnitude of current supplied from the power supply unit to the load device over time and outputs waveform data indicating the relationship between the current magnitude and time, and extracts the characteristics of the waveform data A waveform analysis unit that outputs a waveform code signal including a numerically converted waveform code, and a storage unit that stores the waveform code and the identification code in association with each other for each of the plurality of load devices to which an identification code is assigned. Identification that outputs the identification code associated with the waveform code when the waveform code of the load device connected to the output terminal matches the waveform code stored in the storage unit Provided with a door.

  In order to achieve the above object, the power supply device management method of the present invention detects the magnitude of the current supplied to the load device at a predetermined time after the supply of power to the load device is started, Outputs waveform data indicating the relationship between the current magnitude and time, outputs a waveform code signal including a waveform code obtained by extracting and digitizing the characteristics of the waveform data, and a plurality of the identification codes assigned to each of the waveform code signals The waveform code and the identification code are stored in association with each load device, and the identification code associated with the waveform code is output when the waveform code of the load device matches the stored waveform code. To do.

  In order to achieve the above object, the program of the power supply device of the present invention detects the magnitude of the current supplied to the load device at a predetermined time after the supply of power to the load device is started, and Outputs waveform data indicating the relationship between current magnitude and time, outputs a waveform code signal including a waveform code obtained by extracting and digitizing features of the waveform data, and a plurality of loads each having an identification code The waveform code and the identification code are stored in association with each device, and when the waveform code of the load device matches the stored waveform code, the identification code associated with the waveform code is output. Let the computer do that.

  According to the power supply device, the power supply device management method, and the power supply device program of the present invention, it is possible to automatically identify the load device connected to the power supply device without relying on human eyes.

It is a figure which shows the structural example of 1st Embodiment. It is a figure which shows the structural example of 2nd Embodiment. It is a figure explaining operation | movement of 2nd Embodiment. It is a figure explaining operation | movement of 2nd Embodiment. It is a figure which shows the structural example of 3rd Embodiment.

[First Embodiment]
Next, embodiments of the present invention will be described in detail with reference to the drawings.

  The power supply device 10 of the present invention includes an output terminal 11, a power supply unit 12, a current detection unit 13, a waveform analysis unit 14, a storage unit 15, and an identification unit 16. The power supply unit 12 supplies power to the load device 20 connected to at least one output terminal 11. The current detection unit 13 detects the magnitude of the current supplied from the power supply unit 12 to the load device 20 at a predetermined time after the supply of power to the load device 20 is started. Outputs waveform data indicating the relationship of time. The waveform analysis unit 14 outputs a waveform code signal including a waveform code obtained by extracting and digitizing features of the waveform data. The storage unit 15 stores the waveform code and the identification code in association with each other for each of the plurality of load devices 20 to which identification codes are assigned. Then, when the waveform code of the load device 20 connected to the output terminal matches the waveform code stored in the storage unit 15, the identification unit 16 determines the identification code associated with the waveform code. Output.

  For example, the output of the identification unit 16 may be displayed in characters on a display device connected to the power supply device 10.

  As described above, the power supply device 10 of the present invention generates a waveform code by extracting the characteristics of the waveform of the starting current of the load device, and the waveform code associated with the identification code of the load device stored in the storage unit If they match, an identification code that matches the waveform code is output.

In this way, it is possible to automatically confirm which load device is connected to the power supply device 10 instead of visual inspection.
[Second Embodiment]
Next, a second embodiment will be described with reference to FIGS.
[Description of configuration]
FIG. 2 shows the configuration of the second embodiment.

  The power supply apparatus 100 according to the present embodiment includes an output terminal 110, a UPS power supply unit 120, a current detection unit 130, a waveform analysis unit 140, a storage unit 150, an identification unit 160, a control unit 170, and a switch 180.

  The output terminal 110 is a terminal for connecting the output of the power supply apparatus 100 to the load apparatus 200, and may be a commercial power supply (AC power supply) outlet or the like. The load device 200 may be a computer such as a server.

  In addition, there are a plurality of load devices 200, and each load device 200 is connected to the output terminal 110 in exchange.

  The UPS power supply unit 120 is a generally used uninterruptible power supply (UPS), is connected to a commercial power supply (AC power supply), and includes a battery 121. Note that the UPS power supply unit 120 does not necessarily need to be a UPS power supply, and other power sources such as a commercial power supply (AC power supply) itself do not impair the gist of the present invention. Further, the UPS power supply unit 120 does not necessarily need to be an AC power supply, and even the DC power supply does not impair the gist of the present invention.

  The current detection unit 130 may be realized by a circuit that detects a current and software that operates under a CPU (Central Processing Unit).

  The current detection unit 130 detects the magnitude of the current supplied from the UPS power supply unit 120 to the load device 200 connected between the output terminals 110, and further extracts a waveform indicating the relationship between the magnitude of the startup current and time. Output.

  Here, the starting current will be described.

  FIG. 4 shows a state of the starting current immediately after power is supplied to the load. The horizontal axis represents time, and the vertical axis represents voltage. Since the voltage indicates a voltage proportional to the current flowing through the resistor, the vertical axis can be read as the magnitude of the current.

  When the supply of power from the output terminal 110 is started, the load device 200 is activated. Immediately after the load device 200 is activated, unlike a steady-state current waveform, an unstable state occurs such that a large current is temporarily generated in a short time. The current from immediately after startup to the steady state is referred to as startup current. In FIG. 4, the starting current is from time 0 s to time Es, and the stationary current is after time Es.

  The current detection unit 130 accumulates information in which the magnitude of current is associated with time from immediately after startup, and outputs waveform data to be described later from immediately after startup until the steady state.

  The waveform data output from the current detection unit 130 may be waveform data for a predetermined time instead of the time until the steady state is reached.

  The waveform analysis unit 140 may be realized by software that operates under a CPU (Central Processing Unit).

  The waveform analyzer 140 extracts the characteristics of the waveform of the starting current from the waveform data output from the current detector 130 and outputs a waveform code signal described later.

  The storage unit 150 is a memory. Then, the storage unit 150 stores the waveform code signal output from the waveform analysis unit 140 and the load device identification code in association with each other with respect to the load device 200 to which the identification code is assigned.

  The identification unit 160 includes a CPU, refers to the output of the waveform analysis unit 140 and the waveform code signal stored in the storage unit 150, and identifies and outputs the identification code of the load device 200 connected to the power supply device 100. .

  The output of the identification unit 160 is connected to the display device 300 realized by a personal computer or the like outside the power supply device 100. The display device 300 can display the identification code of the load device 200 connected to the output terminal 110, execute a program using the identification code, and the like. The display device 300 may be incorporated into the power supply device 100.

  The control unit 170 includes a CPU, controls hardware of the power supply apparatus 100, and performs software processing. The CPU of the control unit 170 can also serve as the CPU of the current detection unit 130, the waveform analysis unit 140, and the identification unit 160.

  The switch 180 is a switch that switches between supply and stop of power from the UPS power supply unit 120 to the output terminal 110.

The switch 180 may be manually operated so that the controller 170 recognizes the start of power supply. Alternatively, the switch 180 may be configured such that the control unit operates the switch according to a program or the like to start supplying power. In any case, the control unit 170 can recognize when power supply to the output terminal 110 is started.
[Description of operation]
Next, the operation of the present embodiment will be described with reference to FIG.

  A load device 200 is connected to the output terminal 110 of the power supply device 10.

  First, the switch 180 is turned on (S101).

  As described above, the switch 180 may be turned on manually so that the controller 170 recognizes the start of power supply. Alternatively, the switch 180 may be configured such that the control unit operates the switch by a program or the like to start supplying power. In any case, the control unit 170 can recognize when power supply to the output terminal 110 is started.

  Next, the control unit 170 starts timing from the start of power supply. For this time measurement, a time measurement function possessed by the CPU of the control unit 170 may be used (S102).

  Next, the current detector 130 accumulates the relationship between the current magnitude and time as waveform data at a predetermined sampling period. (S103).

  In step S104, the control unit 170 determines whether or not a predetermined time has been exceeded (S104).

  Here, the predetermined time may be a predetermined number of seconds. In addition, after the start of the time measurement in step S102, the time until the steady state where the fluctuation in the magnitude of the current detected by the current detector 130 converges to a certain range may be set as a predetermined time.

  If it is determined in step S104 that the predetermined time has been exceeded (Y in S103), the process proceeds to step S105. If it is determined in step S103 that the predetermined time has not been exceeded (N in S103), the process returns to step S103.

  In step S105, the current detection unit 130 sends the waveform data to the waveform analysis unit 140, and the waveform analysis unit 140 analyzes the waveform data (S105).

  Here, the example of the waveform of an actual load apparatus is shown in FIG.

  In the example of FIG. 4, a fine waveform is waveform data, and a thick solid line is a current change obtained by smoothing a fine waveform by a method such as averaging for a short time. Then, the waveform analysis unit 140 extracts the intersection of the time and the current corresponding to the symbols shown in the figure as the waveform feature based on the smoothed current change based on the waveform feature point extraction method. Then, the waveform analysis unit 140 generates information of these intersections as a waveform code, and the waveform analysis unit 140 outputs a waveform code signal including the waveform code (S106).

  As a method for extracting the characteristics of the waveform, it is possible to apply the following researches such as research on radio wave source identification techniques using radio wave feature quantities. “Masaaki Kobayashi,“ Survey Report on Specific Radio Source Identification Technologies and Their R & D Trends ”IEICE Tech. Bulletin, vol.115, No.16, SANE2015-2, pp.7-12, April 2015.

  The identification unit 160 determines whether or not the waveform code included in the waveform code signal output in step S106 matches the waveform code stored in the storage unit 150 (S107).

  If it is determined in step S107 that the waveform codes match (Y in S107), the process proceeds to step S110.

  If it is determined in step S107 that there is no matching waveform code (N in S107), the process proceeds to step S108.

  In step S108, the identification unit 160 assigns a new identification code associated with the waveform code (S108).

  Here, the identification code may be given as follows.

  That is, the power supply apparatus 100 includes display means for performing display for prompting the administrator of the power supply apparatus 100 to input a new identification code, and input means that can be input by the administrator. Then, the identification unit 160 may display the display prompting the administrator to input the identification code to the input unit, and the administrator may give the identification code by inputting a new identification code to the input unit. . The identification code may be a load device name, model number, manufacturing number, or the like.

  Alternatively, the identification code assigned by the identification unit may be assigned with a serial number from the oldest one every time a new waveform code is output.

  In step S109, the identification unit 160 associates the waveform code with the newly assigned identification code and stores them in the storage unit 150 (S109).

  In step S110, the identification unit 160 outputs an identification code stored in association with the waveform code in the storage unit 150 (S110).

  For example, the output of the identification unit 160 may be displayed in characters on a display device using a personal computer connected to the power supply device 100.

  As described above, the power supply device 100 of the present invention generates a waveform code by extracting the characteristics of the waveform of the starting current of the load device, and the waveform code associated with the identification code of the load device stored in the storage unit, If they match, an identification code that matches the waveform code is output.

By doing in this way, it is possible to automatically confirm which load device is connected to the power supply device 100, not visually.
[Third Embodiment]
Next, a third embodiment will be described with reference to FIG.
[Description of configuration]
FIG. 5 shows the configuration of the third embodiment.

  The power supply device 500 of this embodiment differs from the power supply device 100 of the second embodiment in that there are two current detection units (reference numerals 531 and 532), two output terminals (reference numerals 511 and 512), and a switch. There are two (reference numerals 581 and 582). One load device 601 and 602 is connected to each of the output terminals 511 and 512.

Other configurations are the same as those of the second embodiment.
[Description of operation]
In this embodiment, the switch 581 and the switch 582 are turned on at different times.

  First, when the switch 581 is turned on, the identification code of the first load device 601 is output in step S110 of the operation of FIG. 2 of the second embodiment, or a new identification code is added to the waveform code of the load device 601 in step S109. Are stored in association with each other.

  Next, when the switch 582 is turned on, the identification code of the second load device 602 is output in step S110 of the operation of FIG. 2 of the second embodiment, or the waveform code of the load device 602 is newly identified in step S109. The code is associated and stored.

  By doing in this way, even if it is the power supply device 500 which has two output terminals, it can be confirmed automatically instead of visual observation which load device was connected to the power supply device 500. FIG.

  In addition, although the power supply apparatus 500 connects a load apparatus to two output terminals, respectively, it is also possible to have three or more output terminals and connect each load apparatus with the same structure.

DESCRIPTION OF SYMBOLS 10 Power supply device 11 Output terminal 12 Power supply part 13 Current detection part 14 Waveform analysis part 15 Storage part 16 Identification part 20 Load apparatus 100 Power supply apparatus 110 Output terminal 120 Power supply part 121 Battery 130 Current detection part 140 Waveform analysis part 150 Storage part 160 Identification Unit 170 control unit 180 switch 200 load device 300 display device 500 power supply device 511 first output terminal 512 second output terminal 531 first current detection unit 532 second current detection unit 581 first switch 582 second Switch 601 First load device 602 Second load device

Claims (9)

A power supply for supplying power to a load device connected to at least one output terminal;
Detects the magnitude of the current supplied from the power supply unit to the load device at a predetermined time after the supply of power to the load device is started, and outputs waveform data indicating the relationship between the current magnitude and time A current detector to
A waveform analyzer that outputs a waveform code signal including a waveform code obtained by extracting and digitizing the characteristics of the waveform data;
A storage unit that stores the waveform code and the identification code in association with each other for each of the plurality of load devices to which an identification code is assigned;
An identification unit that outputs the identification code associated with the waveform code when the waveform code of the load device connected to the output terminal matches the waveform code stored in the storage unit; A featured power supply.   2. The power supply device according to claim 1, wherein the predetermined time is a time from when power supply to the load device is started until an output current waveform of the power supply becomes a steady state.   The power supply apparatus according to claim 1, wherein the power supply apparatus is an uninterruptible power supply apparatus. Detecting the magnitude of the current supplied to the load device at a predetermined time after the supply of power to the load device is started, and outputting waveform data indicating the relationship between the current magnitude and time;
Output a waveform code signal including a waveform code extracted by extracting the characteristics of the waveform data,
Storing the waveform code and the identification code in association with each other for each of the plurality of load devices to which an identification code is assigned;
When the waveform code of the load device matches the stored waveform code, the identification code associated with the waveform code is output.   The power supply device management according to claim 4, wherein the predetermined time is a time until the output current waveform of the power supply becomes a steady state after the supply of power to the load device is started. Method.   6. The method of managing a power supply device according to claim 4, wherein the power supply device is an uninterruptible power supply device. Detecting the magnitude of the current supplied to the load device at a predetermined time after the supply of power to the load device is started, and outputting waveform data indicating the relationship between the current magnitude and time;
Output a waveform code signal including a waveform code extracted by extracting the characteristics of the waveform data,
Storing the waveform code and the identification code in association with each other for each of the plurality of load devices to which an identification code is assigned;
A program for a power supply device that causes a computer to output the identification code associated with the waveform code when the waveform code of the load device matches the stored waveform code.   8. The program for a power supply device according to claim 7, wherein the predetermined time is a time until the output current waveform of the power supply becomes a steady state after the supply of power to the load device is started. .   The power supply apparatus program according to claim 7 or 8, wherein the power supply apparatus is an uninterruptible power supply apparatus.

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