JP2015230291A - Detection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detection system capable of improving user's convenience when phase detection of a distribution line is performed at two points distant from each other.SOLUTION: A detection system for detecting the phases of a distribution line at a first point and a second point comprises: a first detector for detecting first phase information on the basis of a reference signal and voltage of the distribution line at the first point; a second detector for detecting second phase information on the basis of the reference signal and voltage of the distribution line at the second point; a first mobile terminal device for receiving the first phase information by short-range wireless communication; and a second mobile terminal device for receiving the second phase information by short-range wireless communication. The first mobile terminal device receives the second phase information from the second mobile terminal device, determines whether or not the distribution line at the first point and the distribution line at the second point are in-phase on the basis of the first phase information and the second phase information, and gives notice of the determination result.

Description

  The present invention relates to a detection system, and more particularly to a detection system for detecting each phase of an AC distribution line at two points separated from each other.

  In the power system, power consumers are terminated via a three-phase AC distribution line that is stepped down to 6600 V via a transmission line starting from a substation, and power is supplied to the power consumer from this three-phase AC distribution line. Has been.

  In such a power system, there is a case where the end of one distribution line and the end of the other distribution line are connected in a system change work of the distribution line. In addition, a new single-phase transformer may be connected to a distribution line having a low load phase in order to improve the three-phase unbalance that is expected to become prominent due to the recent expansion of home-use distributed power sources.

  In such a case, in order to prevent a serious accident due to an erroneous detection of each phase, it is necessary to perform a butt phase check on one distribution line and the other distribution line. For example, it is possible to detect the phase by visually tracking the distribution line from a place where the phase can be determined such as a substation to a place where the phase is detected such as a construction place.

  As another method, it is conceivable to measure a phase difference between two points by synchronous measurement using GPS (Global Positioning System) for phase detection.

  For example, as a technique for measuring a phase difference, Japanese Patent Application Laid-Open No. 2008-249472 (Patent Document 1) discloses a phase difference measurement system that measures a phase difference of an AC electric quantity between two points separated from each other. . The phase difference measurement system measures the time difference between the rising edge of the reference waveform and the rising edge of the AC electric quantity at the same time at the two points, and calculates from the difference between these time differences. The phase difference of the AC electric quantity between the two points is obtained.

JP 2008-249472 A

  However, the system disclosed in Patent Document 1 is not mentioned about use for phase inspection of high-voltage distribution lines. In addition, in the measuring instrument in this system, the measuring unit and the communication terminal for communicating with other measuring instruments are integrated. Therefore, the user who checks the phase of the high-voltage distribution line should pay sufficient attention to the high-voltage distribution line. It is necessary to perform the operation. Therefore, it cannot be said that user convenience is sufficiently taken into consideration.

  The present invention has been made in order to solve the above-described problems, and is a detection system capable of improving the convenience of the user when performing phase inspection of distribution lines at two points distant from each other. The purpose is to provide.

  According to an embodiment, a detection system is provided for detecting the phase of each distribution line at a first point and a second point. The detection system includes a first detector that detects first phase information related to a phase of the voltage of the distribution line based on a reference signal serving as a time reference and a voltage of the distribution line at the first point; Based on the signal and the voltage of the distribution line at the second point, the second detector that detects the second phase information related to the phase of the voltage of the distribution line, and the first detector by short-range wireless communication A first mobile terminal device that receives first phase information, and a second mobile terminal device that receives second phase information from a second detector by short-range wireless communication. The first portable terminal device is based on the phase information receiving means for receiving the second phase information from the second portable terminal device, the first phase information, and the second phase information. The determination means which determines whether a distribution line and the distribution line in a 2nd point are in phase, and the alerting | reporting means which alert | reports the determination result of a determination means are included.

  Preferably, each of the first and second detectors further includes a receiver that receives satellite signals from the satellite positioning system. The reference signals used in the first and second detectors are time-synchronized with satellite signals. The receiver has time measuring means for measuring time based on the satellite signal, and position information storage means for storing position information of the point where the detector is provided.

  Preferably, the phase information receiving means receives the second phase information from the second portable terminal device via the short message service.

  Preferably, the first portable terminal device further includes a display and an image storage unit that stores an image indicating the determination result. The notification means notifies the determination result by displaying the image stored in the image storage means on the display.

  Preferably, the first portable terminal device uses a voice input unit that accepts input of speech voice to the first portable terminal device, a voice output unit that outputs voice, a voice input unit, and a voice output unit. And a call control means for performing a hands-free call.

  Preferably, the detection system further includes a management server. The first mobile terminal device further receives position information of the first point from the first detector by short-range wireless communication. The second portable terminal device further receives position information of the second point from the second detector by short-range wireless communication. The first portable terminal device has completed the determination by the position information receiving means for receiving the position information of the second point from the second portable terminal device, the position information of the first and second points, and the determining means. And history information transmission means for transmitting history information including completion information indicating to the management server. The completion information includes date information when the determination by the determination unit is completed.

  According to another embodiment, a detection system is provided for detecting the phase of each distribution line at a first point and a second point. The detection system includes a first detector for detecting first phase information of the voltage of the distribution line based on a reference signal serving as a reference of time and the voltage of the distribution line at the first point; a reference signal; Based on the voltage of the distribution line at the second point, the second detector for detecting the second phase information of the voltage of the distribution line and the first and second phase information by the short-range wireless communication. And a single mobile terminal device respectively receiving from the first and second detectors. The first point and the second point are positions where short-range wireless communication is possible from the position of one mobile terminal device. One mobile terminal apparatus determines whether or not the distribution line at the first point and the distribution line at the second point are in phase based on the first phase information and the second phase information. And notification means for notifying the determination result of the determination means.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve a user's convenience in the case of carrying out phase inspection of a distribution line in two points away from each other.

It is a figure which shows roughly the structure of the detection system according to this Embodiment. It is a block diagram which shows an example of the hardware constitutions of the detector according to this Embodiment. It is a block diagram which shows an example of the hardware constitutions of the portable terminal device according to this Embodiment. It is a figure for demonstrating the phase detection principle (in-phase) in the detection system according to this Embodiment. It is a figure for demonstrating the phase detection principle (different phase) in the detection system according to this Embodiment. It is a figure for demonstrating the calculation system when calculating a phase from time. It is a block diagram which shows the function structure of the portable terminal device according to this Embodiment. It is a sequence diagram which shows operation | movement of the detection system according to this Embodiment. It is a flowchart which shows the process sequence of the portable terminal device according to this Embodiment. It is a figure which shows an example of the user interface screen 500 provided by the portable terminal device according to this Embodiment. It is a figure which shows the other example of the user interface screen 500 provided by the portable terminal device according to this Embodiment. It is a figure which shows roughly the structure of the detection system according to the modification of this Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<System overview>
FIG. 1 schematically shows a configuration of detection system 1000 according to the present embodiment.

  Referring to FIG. 1, detection system 1000 includes detectors 10A and 10B (hereinafter collectively referred to as "detector 10") and mobile terminal devices 20A and 20B (hereinafter collectively referred to as "portable terminal devices"). 20 ”).

  In the present embodiment, detection system 1000 is used when performing phase matching on distribution line 1A at point A and distribution line 1B at point B that is several kilometers or tens of kilometers away from point A. Distribution lines 1A and 1B are composed of 6.6 kV high-voltage three-phase distribution lines.

  For example, in the system change work of the distribution line in the electric power system, the detector 10 is configured to connect the distribution line 1A at the point A and the distribution line 1B at the point B in butt connection to each other distribution line 1A and the other distribution line 1A. The phase matching is performed for the distribution line 1B. Or the detector 10 is used also when tagging each phase detection result which performed the butt phase detection about the distribution line 1A and the distribution line 1B in the position which mutually separated.

  The mobile terminal device 20 is, for example, a smartphone that includes a touch panel. Hereinafter, a smartphone will be described as a representative example of the “portable terminal device”. However, the mobile terminal device may be another device such as a tablet terminal device, a digital camera, a personal computer, or a PDA (Personal Data Assistance).

  The detector 10A receives a GPS signal (GPS satellite signal) from a GPS satellite as a satellite positioning system via an antenna 124 attached to the main body portion. The detector 10B also receives the GPS signal via the antenna 124 attached to the main body portion.

  The detectors 10A and 10B are electrically connected to the distribution lines 1A and 1B, respectively, by hook-shaped fittings at the ends of the main body portions. Specifically, the detectors 10A and 10B are connected to one phase (distribution line) of the three phases (R phase, S phase, and T phase) of the distribution lines 1A and 1B, respectively.

  The detector 10A detects phase information of the AC voltage based on the reference signal synchronized with the Coordinated Universal Time using the received GPS signal and the AC voltage of the distribution line 1A at the point A. Similarly, the detector 10B detects the phase information of the AC voltage based on the reference signal synchronized with the Coordinated Universal Time using the received GPS signal and the AC voltage of the distribution line 1B. That is, the reference signals used in the detectors 10A and 10B are time synchronized with each other by the GPS signal. The phase information includes information indicating the phase (or time) from the rising edge of the reference signal to the rising edge of the AC voltage. The details of the phase information detection method will be described later.

  The detector 10A and the mobile terminal device 20A are configured to be communicable via short-range wireless communication such as Bluetooth (registered trademark). The detector 10B and the mobile terminal device 20B are also configured to be communicable via short-range wireless communication. Detectors 10A and 10B transmit the detected phase information to mobile terminal devices 20A and 20B, respectively, using short-range wireless communication.

  The mobile terminal device 20A and the mobile terminal device 20B are configured to be communicable via a mobile terminal communication network, and transmit / receive phase information to / from each other using, for example, a short message service (SMS). Specifically, the mobile terminal device 20A transmits the AC voltage phase information of the distribution line 1A to the mobile terminal device 20B, and receives the AC voltage phase information of the distribution line 1B from the mobile terminal device 20B. The mobile terminal device 20B transmits the AC voltage phase information of the distribution line 1B to the mobile terminal device 20A, and receives the AC voltage phase information of the distribution line 1A from the mobile terminal device 20A.

  The portable terminal device 20 determines whether one line of the distribution line 1A and one line of the distribution line 1B are in phase by comparing each phase information. Details of the determination method will be described later. And the portable terminal device 20 alert | reports to a user whether it is in-phase or a different phase by displaying a determination result on a display. The mobile terminal device 20 may store an image indicating the determination result in a memory and display the image on a display in response to a user instruction. Thereby, the user can confirm the memorize | stored determination result suitably.

  Moreover, the mobile terminal device 20 may perform a hands-free call with another mobile terminal device 20 using a speaker and a microphone. Thereby, since the user of the mobile terminal device 20A can talk with the user of the other mobile terminal device 20B while looking at the display on which the determination result is displayed, the work efficiency of the phase detection is improved. In addition, each user does not need to carry a call terminal for contacting other users.

  Furthermore, the mobile terminal device 20A receives position information (information including latitude, longitude, and altitude) of the point A from the detector 10A, and the mobile terminal device 20B receives position information of the point B from the detector 10B. . And 20 A of portable terminal devices receive the positional information on B point from the portable terminal device 20B, and the positional information on A point and B point and the completion information which shows that the phase detection in these points was completed The included history information is transmitted to the management server 30. The history information may include date and time information when the phase inspection is completed.

  Thereby, the portable terminal device 20 can confirm when and at which point the phase detection is completed by accessing the management server 30. Note that the mobile terminal device 20B may receive the position information of the point A from the mobile terminal device 20A and transmit history information including the position information of the points A and B and the completion information to the management server 30.

Hereinafter, detection system 1000 according to the present embodiment will be described in more detail.
<Hardware configuration>
(Detector)
FIG. 2 is a block diagram showing an example of a hardware configuration of detector 10 according to the present embodiment. Referring to FIG. 2, detector 10 includes, as main components, CPU 102, memory 104, communication interface 106, battery 108 that supplies power to each part of detector 10, detection sensor 110, and GPS reception. Machine 120.

  The CPU 102 controls the operation of each unit of the detector 10 by reading and executing the program stored in the memory 104. More specifically, the CPU 10 executes each of the processes (steps) of the detector 10 described later by executing the program. The CPU 10 is, for example, a microprocessor. The hardware may be an FPGA (Field Programmable Gate Array) other than the CPU, an ASIC (Application Specific Integrated Circuit), a circuit having other arithmetic functions, or the like.

  The memory 104 is realized by a RAM (Random Access Memory), a ROM (Read-Only Memory), or the like. The memory 104 stores a program executed by the CPU 102 or data used by the CPU 102.

  The communication interface 106 exchanges various data between the detector 10 and an external device. The communication method is short-range wireless communication using Bluetooth (registered trademark), wireless LAN (Local Area Network), or the like.

  The detection sensor 110 detects the AC voltage of the distribution line using a hook-shaped metal fitting, and inputs the detected AC voltage to the CPU 102.

  The GPS receiver 120 includes a GPS module 122 and an antenna 124. The GPS module 122 includes an arithmetic unit that executes various processes, a storage unit, and an internal clock, and performs various processes using GPS signals received from a GPS satellite having a highly accurate time measuring device via an antenna 124. Execute.

  Specifically, the GPS module 122 generates a so-called 1 PPS (Pulse Per Second) signal, which is a 1-second pulse signal as a reference signal serving as a time reference based on the GPS signal. Further, the GPS module 122 extracts time information from the GPS signal, and synchronizes the time of the internal clock with the time of the GPS signal based on the time information. Then, the GPS module 122 inputs the 1PPS signal and the time information of the internal clock to the CPU 102. Further, the storage unit in the GPS module 122 stores position information of a point where the detector 10 is provided at the time of phase detection. As a result, the initial acquisition time of the GPS satellite is shortened, and the initial position calculation time, which is the time until the first position information is output after the GPS receiver 120 is turned on, can be shortened.

  The detector 10 may include a button for receiving an instruction from the user, a display as a display unit, and the like.

(Mobile terminal device)
FIG. 3 is a block diagram showing an example of a hardware configuration of portable terminal device 20 according to the present embodiment. Referring to FIG. 3, the mobile terminal device 20 includes, as main components, a CPU 202, a memory 204, a touch panel 206, a display 208, a wireless communication unit 210, a communication antenna 212, a receiver 214, and a speaker 216. A microphone 218, a communication interface (I / F) 220, and a memory interface (I / F) 222.

  The CPU 202 controls the operation of each part of the mobile terminal device 20 by reading and executing the program stored in the memory 204. More specifically, the CPU 202 implements processing of the mobile terminal device 20 to be described later by executing the program. The CPU 202 is, for example, a microprocessor.

  The memory 204 is realized by a RAM, a ROM, a flash memory, or the like. The memory 204 stores various data, programs executed by the CPU 202, and the like.

  The touch panel 206 is provided on a display 208 having a function as a display unit. The touch panel 206 may be configured by any type such as a resistive film method, a surface acoustic wave method, an infrared method, an electromagnetic induction method, and a capacitance method. The touch panel 206 detects a touch operation on the touch panel 206 by an external object, and inputs touch coordinates to the CPU 202.

  The display 208 is, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display, and displays an image or text on the display screen based on a signal from the CPU 202.

  The wireless communication unit 210 connects to a mobile communication network via the communication antenna 212 and transmits and receives signals for wireless communication. Thereby, the mobile terminal device 20 can communicate with other mobile terminal devices 20 via a mobile communication network such as a third generation mobile communication system (3G) or LTE (Long Term Evolution).

  The receiver 214 outputs a sound based on a sound signal transmitted from the call destination during a handset call in accordance with an instruction from the CPU 202. The speaker 216 outputs sound at a higher sound pressure level than the receiver 214 in accordance with instructions from the CPU 202. The speaker 216 outputs sound, for example, during a hands-free call. The microphone 218 receives an input of uttered voice to the mobile terminal device 20 and inputs a signal corresponding to the uttered voice to the CPU 202.

  The communication interface 220 exchanges various data with the detector 10. The communication method is short-range wireless communication using Bluetooth (registered trademark), wireless LAN, or the like.

  The memory interface 222 reads data from the external storage medium 224. The storage medium 224 is a non-volatile device such as a CD (Compact Disc), a DVD (Digital Versatile Disk), a BD (Blu-ray (registered trademark) Disc), a USB (Universal Serial Bus) memory, or an SD (Secure Digital) memory card. And a medium for storing the program.

(Management server)
The management server 30 only needs to provide information processing as described below as a whole, and a known hardware configuration can be adopted. Therefore, a detailed description of the hardware configuration of the management server 30 will not be given. For example, the management server 30 includes a CPU for executing various processes, a memory for storing data, a program executed by the CPU, and a communication interface for transmitting and receiving various data to and from the mobile terminal device 20. Including.

<Phase detection principle>
Next, the phase detection principle in detection system 1000 according to the present embodiment will be described with reference to FIGS.

  FIG. 4 is a diagram for describing the phase detection principle (in-phase) in detection system 1000 according to the present embodiment. FIG. 5 is a diagram for describing the phase detection principle (different phase) in detection system 1000 according to the present embodiment. FIG. 6 is a diagram for explaining a calculation method for calculating a phase from time.

  In the detection system 1000, first, at a point A and a point B, the time from the rising of the reference signal to the rising zero cross of the ground voltage waveform is measured at the same time, and the phase corresponding to the time is obtained. Then, by comparing the respective phases obtained at the two points, it is determined whether the lines of the distribution lines at the two points are in phase or in phase.

  Specifically, if the phase difference (α1−α2) between the phase α1 at the point A and the phase α2 at the point B is within a predetermined angle (for example, within ± 30 °), the phase is determined to be in phase, and if it is larger than the predetermined angle, the phase is determined to be different. Is done. Note that the determination may be performed based on a difference in time measured at each point. For example, if the time difference (t1-t2) between the time t1 measured at the point A and the time t2 measured at the point B is within a predetermined time (for example, within a time corresponding to a phase difference of ± 30 °). If it is in-phase and larger than a predetermined time, it may be determined as a different phase.

  Referring to FIG. 4, when power to detector 10 </ b> A is turned on at point A, detector 10 </ b> A starts a process of capturing a GPS satellite using GPS receiver 120. Further, the detector 10A detects the ground voltage of the distribution line by the detection sensor 110, and converts the ground voltage into a rectangular wave.

  Next, when the detector 10A captures the GPS satellite, it receives a GPS signal received from the GPS satellite, and the detector 10A generates a pulse at the same timing every second in synchronization with Coordinated Universal Time (UTC). A 1PPS signal (GPS synchronization signal) is generated, and the 1PPS signal is adopted as a reference signal. The detector 10A also employs the time extracted from the GPS signal.

  The detector 10A measures a time t1 (for example, 15 ms) from the rising of the reference signal to the rising zero cross of the ground voltage, and converts this to a phase α1 (for example, 270 °). Specifically, the detector 10A is provided with a counter that counts 360 in one cycle, and starts counting from the rising edge of the 1PPS signal as shown in FIG. End the count. The detector 10A converts the time t1 into the phase α1 based on the count number. For example, when the period is 20 ms and the time t1 is 15 ms, the phase α1 is calculated as 270 ° because 270 counts are performed. Further, since the detector 10A detects the time from the rising edge of the synchronization signal (1 second pulse) to the first rising zero cross of the ground voltage, a more accurate phase can be obtained.

  Also at the point B, the detector 10B performs the same processing as the detector 10A described above. Specifically, the detector 10B measures the time t2 (for example, 15 ms) between the rising edge of the reference signal and the rising edge of the ground voltage, and converts it to a phase α2 (for example, 270 °). The detector 10B performs the conversion process as described with reference to FIG.

  In the example of FIG. 4, the phase α1 and the phase α2 are the same (time t1 and time t2 are also the same). Therefore, one line of the distribution line at two points (point A and point B) is determined to be in phase.

  On the other hand, referring to FIG. 5, detector 10A detects time t1 (15 ms) and phase α1 (270 °), and detector 10B detects time t2 (1.7 ms) and phase α2 (30 °). ) Has been detected. Thus, in the example of FIG. 5, since the phase difference is not within ± 30 °, one line of the distribution lines at the two points (point A and point B) is determined to be in a different phase.

<Functional configuration>
A functional configuration of portable terminal device 20 provided in detection system 1000 according to the present embodiment will be described. FIG. 7 is a block diagram showing a functional configuration of portable terminal device 20 according to the present embodiment.

  Referring to FIG. 7, the mobile terminal device 20 has a phase information communication unit 250, a determination unit 252, a notification unit 254, a position information communication unit 256, a history information communication unit 258, as its main functional configuration. A call control unit 260. These functions are mainly realized by the CPU 202 of the mobile terminal device 20 executing a program stored in the memory 204 and giving a command to each component of the mobile terminal device 20. The CPU 202 has a function as a control unit that controls the entire operation of the mobile terminal device 20. Note that some or all of these functional configurations may be realized by hardware.

  The phase information communication unit 250 receives phase information P1 related to the phase of the voltage of the distribution line at the first point from the detector 10 via the short-range wireless communication. Specifically, the phase information P1 includes the time from the rise of the reference signal to the rise zero cross of the ground voltage of the distribution line at the first point and the phase corresponding to the time.

  Further, the phase information communication unit 250 receives phase information P2 related to the voltage phase of the distribution line at the second point from the other mobile terminal device 20 via the mobile communication network, and receives the phase information P1 from the other mobile terminal device. It transmits to the terminal device 20. The phase information P2 includes the time from the rising of the reference signal to the rising zero cross of the ground voltage of the distribution line at the second point and the phase corresponding to the time. The phase information communication unit 250 uses a short message service for transmission / reception of phase information.

  The determination unit 252 determines whether the distribution line at the first point and the distribution line at the second point are in phase based on the phase information P1 and the phase information P2. Specifically, the determination unit 252 compares the phase information P1 and the phase information P2, determines that the phase difference between the first and second points is within a predetermined angle, and determines that the phase is in-phase. If it is larger, it is judged as a different phase. The determination unit 252 sends completion information indicating that the determination is completed to the history information communication unit 258. The completion information includes date and time information when the determination is completed.

  The notification unit 254 notifies the determination result of the determination unit 252. Specifically, the notification unit 254 causes the display 208 to display an image indicating the determination result (whether in phase or out of phase). In addition, the notification unit 254 causes the speaker 216 to output a sound indicating the determination result. Note that the notification unit 254 may notify the determination result by vibrating a vibrator (not shown) or lighting an LED (not shown).

  The position information communication unit 256 receives the position information L1 of the first point from the detector 10 via short-range wireless communication. Further, the position information communication unit 256 receives the position information L2 of the second point from the other mobile terminal device 20 via the mobile communication network, and transmits the position information L1 to the other mobile terminal device 20.

  The history information communication unit 258 transmits history information including the position information L1 and L2 of the first and second points and the completion information to the management server 30 via the mobile communication network. Further, the history information communication unit 258 may receive the history information stored in the management server 30. The history information may be transmitted / received according to an instruction from the user via the touch panel 206, or may be periodically transmitted / received.

  The call control unit 260 uses the speaker 216 and the microphone 218 to perform a hands-free call with another mobile terminal device 20. Specifically, the call control unit 260 outputs a call voice from the speaker 216 and controls the volume of the speaker 216 (output amplification factor) to be larger than that during a normal call. In addition, the call control unit 260 performs control so that the sensitivity (input amplification factor) of the microphone 218 is higher than that during a normal call. For example, the call control unit 260 shifts the mobile terminal device 20 to the hands-free call mode in response to an instruction from the user via the touch panel 206.

<Processing procedure>
FIG. 8 is a sequence diagram showing an operation of detection system 1000 according to the present embodiment.

  Referring to FIG. 8, detector 10A detects phase information (“phase information Pa” in the figure) of the AC voltage of distribution line 1A (step S10). The detector 10B detects the phase information (“phase information Pb” in the figure) of the AC voltage of the distribution line 1B (step S12).

  The detector 10A transmits the phase information Pa and the position information of the point A (“position information La” in the drawing) stored in the internal memory to the portable terminal device 20A via the short-range wireless communication (step S20). S14). The detector 10B transmits the phase information Pb and the position information of the B point stored in the internal memory (“position information Lb” in the figure) to the mobile terminal device 20B via the short-range wireless communication (step S10). S16).

  The mobile terminal device 20A transmits the phase information Pa and the position information La received from the detector 10A to the mobile terminal device 20B (step S18). The mobile terminal device 20B transmits the phase information Pb and the position information Lb received from the detector 10B to the mobile terminal device 20A (step S20).

  The portable terminal devices 20A and 20B determine whether or not the distribution line 1A and the good distribution line 1B are in phase based on the phase information Pa and Pb (steps S22 and S24). The portable terminal devices 20A and 20B display the determination result on the display 208 (steps S26 and S28).

  The portable terminal devices 20A and 20B receive a hands-free call instruction from each user via the touch panel 206, and start a hands-free call (step S30).

  After that, when the phase inspection operation (in-phase or out-of-phase determination operation) is completed, the mobile terminal device 20A obtains position information on the points A and B and completion information indicating that the phase inspection operation has been completed. The included history information is transmitted to the management server 30 (step S32). The management server 30 stores the history information received from the mobile terminal device 20A (step S34).

  Next, with reference to FIGS. 9 to 11, a detailed processing procedure of portable terminal device 20 according to the present embodiment will be described. FIG. 9 is a flowchart showing a processing procedure of mobile terminal apparatus 20A according to the present embodiment. The following steps are realized by the CPU 202 of the mobile terminal device 20 </ b> A executing a program stored in the memory 204. Since the processing procedure of the mobile terminal device 20B is substantially the same as the processing of the mobile terminal device 20A described below, detailed description thereof will not be given.

  Referring to FIG. 9, CPU 202 of mobile terminal device 20A uses communication interface 220 to search for a detector that exists within a short-range wireless communication range (for example, within a Bluetooth (registered trademark) communication range) (step). S50). The mobile terminal device 20A transmits a communication establishment request to the detected detector 10A to establish a communication connection (step S52). At this time, the detector 10A transmits a communication establishment response to the mobile terminal device 20A in response to the communication establishment request, and establishes a communication connection with the mobile terminal device 20A.

  Next, when accepting an application activation operation from the user via the touch panel 206, the CPU 202 displays a user interface screen 500 on the display 208 (step S54).

  FIG. 10 is a diagram showing an example of a user interface screen 500 provided by the mobile terminal device 20A according to the present embodiment. FIG. 11 is a diagram showing another example of a user interface screen 500 provided by the mobile terminal device 20A according to the present embodiment. For convenience of explanation, FIGS. 10 and 11 show examples of screens on which the phase value and information indicating whether the phase is the same or different are already displayed.

  Referring again to FIG. 9, CPU 202 receives phase information Pa and position information La from detector 10A via communication interface 220 (step S56). At this time, “real-time phase value”, its “acquisition time”, and “number of captured GPS satellites” are displayed on the user interface screen 500 as the phase information Pa.

  The CPU 202 transmits the phase information Pa and the position information La to the mobile terminal device 20B that is the communication partner by the short message service communication via the wireless communication unit 210 and the communication antenna 212 (step S58).

  Specifically, first, when the CPU 202 receives a selection operation of the destination reference button 502 from the user, the CPU 202 displays the destination information stored in the memory 204 on the display 208 (not shown). When the user selects the destination of the mobile terminal device 20B, the CPU 202 determines the mobile terminal device 20B as a communication partner. And CPU202 will transmit phase information Pa and position information La to the portable terminal device 20B, if selection operation of the phase transmission button 506 is received. Note that the mobile terminal device 20A may separately transmit the position information La. Note that the CPU 202 may receive the selection operation of the communication test button 504 from the user and transmit the phase information Pa and the position information La to the mobile terminal device 20B after the communication test with the mobile terminal device 20B is completed.

  Next, the CPU 202 receives the phase information Pb and the position information Lb from the mobile terminal device 20B via the wireless communication unit 210 and the communication antenna 212 (step S60). At this time, “phase of own device” and its “acquired time” are displayed in the display area 508 as phase information Pa acquired in the past (5 seconds before the current time) on the user interface screen 500. Further, “phase of counterpart device” and its “acquisition time” are displayed in the display area 510 as the phase information Pb. Note that the acquisition time of the phase information Pa and the phase information Pb is the same time because the time is synchronized.

  The CPU 202 compares the phase information Pa and the phase information Pb acquired at the same time, and determines whether one line of the distribution line 1A and one line of the distribution line 1B are in phase (step S62). When it is determined that these are in phase (YES in step S62), CPU 202 displays on display 208 that they are in phase (step S64). For example, in the example of the user interface screen 500 shown in FIG. 10, since the phase value of the own device is 123 ° and the phase value of the counterpart device is 124 °, the phase difference is within ± 30 °. It is determined that one line of the distribution line 1A and one line of the distribution line 1B are in phase. Then, the CPU 202 displays “in-phase” in the display area 512. Note that the CPU 202 may store the determination result “in phase” in the memory 204 as an image.

  On the other hand, when it is determined that these are out of phase (NO in step S62), CPU 202 displays on the display 208 that it is out of phase (step S66). Specifically, in the example of the user interface screen 500 shown in FIG. 11, since the phase value of the own device is 123 ° and the phase value of the counterpart device is 246 °, the phase difference is larger than ± 30 °. The CPU 202 determines that one line of the distribution line 1A and one line of the distribution line 1B are out of phase. Then, the CPU 202 displays “different phase” in the display area 512. Note that the CPU 202 may store the determination result of “different phase” in the memory 204 as an image.

  Next, the CPU 202 determines whether or not an instruction to execute a hands-free call with the mobile terminal device 20B has been received (step S68). Specifically, when the CPU 202 receives a selection operation of the hands-free call button 514 from the user, the CPU 202 determines that the instruction has been received.

  If there is no such instruction (NO in step S68), CPU 202 executes a process in step S72 described later. If there is such an instruction (YES in step S68), CPU 202 starts a hands-free call (step S70). Accordingly, the mobile terminal device 20A and the mobile terminal device 20B can make a call that allows the user to listen to the sound from the speaker 216 or input the sound to the microphone 218 while looking at the display 208.

  Next, the CPU 202 determines whether or not to complete the phase detection work (step S72). Specifically, when the CPU 202 receives a selection operation of the completion button 516 from the user, the CPU 202 determines that the instruction has been received.

  If the phase detection operation is not completed (NO in step S72), CPU 202 repeats the processing from step S50. On the other hand, when completing the phase checking work (YES in step S72), CPU 202 provides history information including position information Pa and Pb and phase checking work completion information via wireless communication unit 210 and communication antenna 212. Is transmitted to the management server 30 (step S74). Then, the CPU 202 completes the process.

  In the above description, the timing of the display process of the user interface screen in step S54 may be executed before step S50, for example. Further, the hands-free call processing in steps S68 and S70 is not limited to the above timing, and may be performed at any timing as long as the user interface screen is displayed.

<Modification>
In the above-described embodiment, the configuration in which the mobile terminal device 20A communicates with the detector 10A and the mobile terminal device 20B communicates with the detector 10B has been described. However, if the detector 10A and the detector 10B are present at a position where communication is possible with the mobile terminal device 20A or the mobile terminal device 20B, the distribution lines are in phase by either one of the mobile terminal devices 20. You may determine whether it is a different phase. Here, a detection system that performs phase detection using one mobile terminal device 20 (for example, mobile terminal device 20A) will be described.

  FIG. 12 is a diagram schematically showing a configuration of a detection system 1100 according to a modification of the present embodiment. Referring to FIG. 12, detection system 1100 includes detectors 10A and 10B and a mobile terminal device 20A. That is, the detection system 1100 corresponds to a configuration in which the mobile terminal device 20B is removed from the detection system 1000 of FIG. 1 described above. Therefore, detailed description of the same configuration as detection system 1000 will not be repeated.

  The detection system 1100 is used when performing phase matching on the distribution line 1A at point A and the distribution line 1B at point B that is relatively close to the point A (for example, several tens of meters). Specifically, point A and point B are positions where short-range wireless communication is possible from the position of the mobile terminal device 20A, respectively, and when the mobile terminal device 20A can establish a communication connection with each detector 10 Used.

  In the detection system 1100, the detectors 10A and 10B transmit the detected phase information to the mobile terminal device 20A using short-range wireless communication. Note that the detectors 10A and 10B may transmit the position information of the point where the detector is provided to the mobile terminal device 20A.

  And 20 A of portable terminal devices determine whether the distribution line 1A and the distribution line 1B are in phase by comparing the phase information of the alternating voltage of the distribution line 1A, and the phase information of the alternating voltage of the distribution line 1B. The determination result is displayed on the display 208 to notify the user whether the phase is the same or different. Further, the mobile terminal device 20A may transmit history information including the position information of the point A and the position information of the point B and the completion information to the management server 30.

  Thus, when the phase check point is relatively close, the phase check work can be performed with only one portable terminal device 20, and the efficiency of the phase check work is improved. Moreover, it is not necessary to prepare two portable terminal devices 20.

[Other embodiments]
In the above-described embodiment, the reference signal used at the points A and B is a 1PPS signal obtained from the GPS signal, and the time is also the time acquired from the GPS signal. However, the present invention is not limited to this, and may be a reference signal and time obtained by other methods.

  Moreover, the phase rotation direction (for example, R phase-> S phase-> T phase) of the three-phase AC distribution line at each point can also be detected using the above-described detection system. For example, when the detection is performed at the point A, the detector 10A is sequentially connected to the three phases of the distribution line 1A. The detector 10A detects the phase information (phase from the rising edge of the reference signal to the rising edge of the AC voltage) of each of the three phases, and transmits these to the mobile terminal device 20A. The portable terminal device 20A can detect the phase rotation direction of the distribution line 1A by comparing the three phases. Moreover, also about B point, the phase rotation direction of the distribution line 1B is similarly detectable using the detector 10B and the portable terminal device 20B.

  In the embodiment described above, it is also possible to provide a program that causes a computer to function and execute control as described in the above flowchart. Such a program is recorded on a non-temporary computer-readable recording medium such as a flexible disk attached to the computer, a CD-ROM (Compact Disk Read Only Memory), a ROM, a RAM, and a memory card as a program product. It can also be provided. Alternatively, the program can be provided by being recorded on a recording medium such as a hard disk built in the computer. A program can also be provided by downloading via a network.

  The program may be a program module that is provided as a part of an operating system (OS) of a computer and that calls necessary modules in a predetermined arrangement at a predetermined timing to execute processing. In that case, the program itself does not include the module, and the process is executed in cooperation with the OS. A program that does not include such a module can also be included in the program according to the present embodiment.

  The configuration illustrated as the above-described embodiment is an example of the configuration of the present invention, and can be combined with another known technique, and a part of the configuration is omitted without departing from the gist of the present invention. It is also possible to change the configuration.

  In the above-described embodiment, the processing and configuration described in the other embodiments may be adopted as appropriate.

  Further, the program according to the present embodiment may be provided by being incorporated in a part of another program. Even in this case, the program itself does not include the module included in the other program, and the process is executed in cooperation with the other program. A program incorporated in such another program can also be included in the program according to the present embodiment.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1A, 1B distribution line, 10A, 10B detector, 20A, 20B portable terminal device, 30 management server, 104, 204 memory, 106, 220 communication interface, 108 battery, 110 detection sensor, 120 GPS receiver, 122 GPS module, 124 antenna, 206 touch panel, 208 display, 210 wireless communication unit, 212 communication antenna, 214 receiver, 216 speaker, 218 microphone, 222 memory interface, 224 storage medium, 250 phase information communication unit, 252 determination unit, 254 notification unit, 256 Location information communication unit, 258 History information communication unit, 260 Call control unit, 500 User interface screen, 502 Destination reference button, 504 Communication test button, 506 Phase transmission button, 508 510,512 display area, 514 handsfree button 516 Finish button 1000, 1100 detection system.

Claims (7)

A detection system for detecting a phase of each distribution line at a first point and a second point,
A first detector for detecting first phase information related to a phase of the voltage of the distribution line based on a reference signal serving as a reference of time and a voltage of the distribution line at the first point;
A second detector for detecting second phase information related to a phase of the voltage of the distribution line based on the reference signal and the voltage of the distribution line at the second point;
A first portable terminal device that receives the first phase information from the first detector by short-range wireless communication;
A second portable terminal device that receives the second phase information from the second detector by short-range wireless communication,
The first portable terminal device is:
Phase information receiving means for receiving the second phase information from the second portable terminal device;
Determining means for determining whether the distribution line at the first point and the distribution line at the second point are in phase based on the first phase information and the second phase information;
A detection system including a notification unit configured to notify a determination result of the determination unit. Each of the first and second detectors further includes a receiver for receiving satellite signals from a satellite positioning system;
The reference signal used in the first and second detectors is time-synchronized with the satellite signal,
The receiver
Clocking means for clocking time based on the satellite signal;
The detection system according to claim 1, further comprising position information storage means for storing position information of a point where the detector is provided.   The detection system according to claim 1, wherein the phase information receiving unit receives the second phase information from the second portable terminal device via a short message service. The first portable terminal device is:
Display,
Image storage means for storing an image indicating the determination result;
The detection system according to claim 1, wherein the notification unit notifies the determination result by displaying an image stored in the image storage unit on the display. The first portable terminal device is:
Voice input means for receiving input of speech voice to the first portable terminal device;
Audio output means for outputting audio;
The detection system according to any one of claims 1 to 4, further comprising a call control means for performing a hands-free call with the second portable terminal device using the voice input means and the voice output means. . A management server,
The first portable terminal device further receives position information of the first point from the first detector by short-range wireless communication,
The second portable terminal device further receives position information of the second point from the second detector by short-range wireless communication,
The first portable terminal device is:
Position information receiving means for receiving position information of the second point from the second portable terminal device;
History information transmission means for transmitting history information including position information of the first and second points and completion information indicating completion of the determination by the determination means to the management server;
The detection system according to claim 2, wherein the completion information includes date and time information when the determination by the determination unit is completed. A detection system for detecting a phase of each distribution line at a first point and a second point,
A first detector for detecting first phase information of the voltage of the distribution line based on a reference signal serving as a reference of time and the voltage of the distribution line at the first point;
A second detector for detecting second phase information of the voltage of the distribution line based on the reference signal and the voltage of the distribution line at the second point;
One mobile terminal device that receives the first and second phase information from the first and second detectors by short-range wireless communication,
The first point and the second point are positions where short-range wireless communication is possible from the position of the one mobile terminal device,
The one mobile terminal device is
Determining means for determining whether the distribution line at the first point and the distribution line at the second point are in phase based on the first phase information and the second phase information;
A detection system including a notification unit configured to notify a determination result of the determination unit.

Images