JP6112043B2 - Communication visualization system - Google Patents

Description

  The present invention relates to a communication visualization system, and more particularly to a technique for visualizing the presence or absence of communication using a communication cable.

  In a data center or the like, a connection change of a communication cable such as a LAN (Local Area Network) cable is performed in accordance with a layout change, movement, or addition of an information communication device such as a server or a hub.

  Some information communication devices have a connection confirmation lamp for confirming the connection of a communication cable. This lamp is provided, for example, on a connector for connecting a communication cable attached to an information communication device.

  The lamp is lit when a communication cable is connected to the connector and communication between information communication devices is established. When the communication cable is disconnected from the connector of the information communication device, the lamp is turned off.

  Alternatively, a connection confirmation lamp may be provided in the connector portion on the communication cable side. Also in this case, the lamp is turned on when the communication cable is connected to the communication connector of the information communication device, and the lamp is turned off when the communication cable is disconnected from the connector.

  As a technique for confirming the connection of this type of communication cable, there is a technique for detecting the insertion or removal of a patch cord or a plug and monitoring the connection of the patch cord in a patching environment (for example, see Patent Documents 1 to 3). Are known.

Special table 2012-508956 gazette Japanese Patent No. 4903536 Japanese Patent No. 5274671

  In recent years, as various services are concentrated, a network in a data center has become complicated. For example, if the communication cable is wired in a deep place in an integrated information communication device, it is difficult to identify the communication cable to be removed by relying only on the connection confirmation lamp. There is a risk of cable disconnection.

  In particular, when a communication cable during data communication is mistakenly disconnected, the service of the corresponding information communication device may be stopped, or data may be damaged during transfer.

  In addition, in the case where a lamp is provided in the connector portion of the communication cable, it is necessary to newly prepare a dedicated communication cable and a dedicated board to which the communication cable is attached, which increases the cost and is large. Change work will occur.

  An object of the present invention is to provide a technique capable of preventing an erroneous disconnection of a communication cable by displaying the presence or absence of information communication in the communication cable.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  A communication visualization system according to an aspect of the present invention includes a power supply device, a communication detection device, and a determination device. The power feeding device radiates a sine wave. The communication detection device detects that a communication cable connected to the information communication device is performing information communication during information communication, and outputs a detection signal. The determination device identifies a communication cable during information communication based on a detection signal output from the communication detection device.

  The communication detection device includes a drive power generation unit, a communication detection unit, a specific signal output unit, and a transmission antenna. The drive power generation unit generates drive power by converting a sine wave radiated by the power supply apparatus into a DC voltage. The communication detection unit outputs a detection signal when information communication is performed using a communication cable connected to the information communication device.

  The specific signal output unit outputs a specific signal for specifying the communication cable based on the detection signal output from the communication detection unit. The transmitting antenna radiates a specific signal output from the specific signal output unit.

  The determination apparatus includes a first reception antenna, a specifying unit, and a display unit. The first receiving antenna receives the specific signal. The specifying unit specifies the communication cable to which the communication detection device is attached from the specific signal received by the first receiving antenna. A display part displays the presence or absence of information communication of a communication cable based on the result which the specific part specified.

  In the communication visualization system according to another aspect of the present invention, the drive power generation unit rectifies the sine wave received by the second reception antenna and the second reception antenna that receives the sine wave radiated by the power feeding device, and performs direct current. And a rectifying unit that converts the voltage into a voltage.

  In the communication visualization system according to another aspect of the present invention, the drive power generation unit further includes a matching unit that adjusts the impedance between the second reception antenna and the rectification unit.

  In the communication visualization system according to another aspect of the present invention, the second reception antenna is a dipole antenna or an inverted L antenna.

  In a communication visualization system according to another aspect of the present invention, a dipole antenna or an inverted L antenna is formed on a printed wiring board by a wiring pattern.

  In the communication visualization system according to another aspect of the present invention, a communication detection unit outputs a voltage induced by a current generated by a magnetic field generated from a communication cable during information communication, and is output from the detection unit A detection signal generation unit that outputs a detection signal based on the voltage, and a switch unit that supplies the drive power generated by the drive power generation unit to the specific signal output unit based on the detection signal output from the detection signal generation unit And having.

  In the communication visualization system according to another aspect of the present invention, the detection unit induces a ferrite core that generates a magnetic field by communication of a communication cable, and a current generated by the magnetic field generated by the ferrite core that is wound around the ferrite core. A coil for outputting a voltage.

  In the communication visualization system according to another aspect of the present invention, the detection unit is a dipole antenna or an inverted L antenna.

  The communication visualization system according to another aspect of the present invention is a communication visualization system in which a dipole antenna or an inverted L antenna is formed on a printed wiring board by a wiring pattern.

  A communication visualization system according to another aspect of the present invention includes a case that houses a communication detection device, and the case is detachably attached to a communication cable.

  A communication visualization system according to another aspect of the present invention includes a case that houses a communication detection device, and the case is integrally attached to a communication cable.

  (1) The presence / absence of information communication on the communication cable can be visually confirmed.

  (2) With the above (1), it is possible to prevent the communication cable from being mistakenly disconnected.

  (3) Since it is easy to confirm the presence / absence of information communication in all information cables, work efficiency can be improved.

  (4) Since stable driving power is supplied, the reliability of the communication detection device can be improved.

It is explanatory drawing which shows an example of a structure of the communication visualization system by Embodiment 1 of this invention. It is explanatory drawing which shows an example of a structure of the wireless power feeder which the communication visualization system of FIG. 1 has. It is explanatory drawing which shows an example of a structure of the determination apparatus which the communication visualization system of FIG. 1 has. It is explanatory drawing which shows an example of a structure of the communication detection apparatus which the communication visualization system of FIG. 1 has. FIG. 5 is an explanatory diagram illustrating an example of a configuration of a signal detection unit provided in the communication detection device of FIG. 4. It is explanatory drawing which shows an example of the case which accommodates a signal detection part and a printed wiring board. It is explanatory drawing which shows the specific connection structural example of a signal detection part and a printed wiring board. It is explanatory drawing which shows an example of the receiving antenna and transmitting antenna which are formed in a printed wiring board. It is explanatory drawing which shows the other example of the receiving antenna and transmitting antenna which are formed in a printed wiring board. FIG. 5 is an explanatory diagram illustrating an example of a matching circuit included in the communication detection device of FIG. 4. It is explanatory drawing which shows an example of the rectifier circuit which the communication detection apparatus of FIG. 4 has. It is explanatory drawing which shows the other example of the rectifier circuit which the communication detection apparatus of FIG. 4 has. It is explanatory drawing which shows an example of a structure of the communication detection apparatus by Embodiment 2 of this invention. It is explanatory drawing which shows an example of the receiving antenna, transmitting antenna, and antenna which are formed in the printed wiring board which the communication detection apparatus of FIG. 13 has.

  In the following embodiments, when it is necessary for the sake of convenience, the description will be divided into a plurality of sections or embodiments. However, unless otherwise specified, they are not irrelevant to each other. There are some or all of the modifications, details, supplementary explanations, and the like.

  Further, in the following embodiments, when referring to the number of elements (including the number, numerical value, quantity, range, etc.), especially when clearly indicated and when clearly limited to a specific number in principle, etc. Except, it is not limited to the specific number, and may be more or less than the specific number.

  Further, in the following embodiments, the constituent elements (including element steps and the like) are not necessarily indispensable unless otherwise specified and apparently essential in principle. Needless to say.

  Similarly, in the following embodiments, when referring to the shape, positional relationship, etc. of components, etc., the shape of the component is substantially the case unless it is clearly specified and the case where it is clearly not apparent in principle. And the like are included. The same applies to the above numerical values and ranges.

  In all the drawings for explaining the embodiments, the same members are denoted by the same reference symbols in principle, and the repeated explanation thereof is omitted. In order to make the drawings easy to understand, even a plan view may be hatched.

(Embodiment 1)
<Configuration example of communication visualization system>
FIG. 1 is an explanatory diagram showing an example of the configuration of a communication visualization system 10 according to Embodiment 1 of the present invention. The communication visualization system 10 visually confirms the presence / absence of information communication through the LAN cable 60, for example.

  As shown in FIG. 1, the communication visualization system 10 includes a wireless power feeding device 11, a plurality of communication detection devices 12, and a determination device 13. The wireless power supply device 11 as a power supply device wirelessly supplies power to the communication detection device 12. The determination device 13 displays the presence / absence of information communication in each LAN cable 60 based on the cable determination signal output from the communication detection device 12.

  The communication detection device 12 is a device that detects that information communication has been performed on the LAN cable 60, and one communication detection device 12 is attached to each LAN cable 60.

  The LAN cable 60 is inserted into a socket of a LAN connector provided in an information communication device 61 that is provided in a data center or the like and is a device that performs information communication such as a server. This is a communication cable for transmitting information between devices 61.

<Configuration example of wireless power feeder>
FIG. 2 is an explanatory diagram showing an example of the configuration of the wireless power supply apparatus 11 included in the communication visualization system 10 of FIG.

  As shown in the figure, the wireless power feeder 11 includes a power oscillation circuit 14 and an antenna 15. The power oscillation circuit 14 is a continuous sine wave and generates a basic high frequency with a substantially constant amplitude. Specifically, it is a sine wave f1 having a frequency of about several MHz to several GHz, for example. The antenna 15 transmits the sine wave f1 generated by the power oscillation circuit 14.

<Configuration example of judgment device>
FIG. 3 is an explanatory diagram showing an example of the configuration of the determination device 13 included in the communication visualization system 10 of FIG.

  The determination device 13 includes an antenna 16, a frequency specifying circuit 17, and a display unit 18, as illustrated. The antenna 16 as the first receiving antenna receives the cable determination signal transmitted from the communication detection device 12. The frequency specifying circuit 17 serving as the specifying unit specifies the frequency of the cable determination signal received by the antenna 16, determines which communication detection device 12 is the output of the cable determination signal, and the determination result. Is output to the display unit 18.

  The display unit 18 includes a monitor such as a liquid crystal display, for example, and displays the determination result output from the frequency specifying circuit 17.

<Configuration example of communication detection device>
FIG. 4 is an explanatory diagram showing an example of the configuration of the communication detection device 12 included in the communication visualization system 10 of FIG.

  As shown in FIG. 4, the communication detection device 12 includes a reception antenna 20, a matching circuit 21, a rectification circuit 22, a signal detection unit 23, a switch 24, an oscillation circuit 25, a transmission antenna 26, a printed wiring board 27, and a case 28. Have.

  The receiving antenna 20 serving as the second receiving antenna receives the sine wave f1 transmitted from the wireless power feeder 11 (FIG. 1). The matching circuit 21 serving as a matching unit is a circuit that performs matching by optimizing impedance matching between the receiving antenna 20 and the rectifier circuit 22. Reduce power loss by optimizing impedance matching.

  The rectifying circuit 22 that is a rectifying unit rectifies the sine wave f1 received by the receiving antenna 20, converts the sine wave f1 into a DC voltage, and supplies it to the signal detection unit 23 and the switch 24 as drive power. The receiving antenna 20, the matching circuit 21, and the rectifier circuit 22 constitute a drive power generation unit.

  The signal detection unit 23 detects that the information communication via the LAN cable 60 has been performed, and outputs a control signal serving as a detection signal to the control terminal of the switch 24. The switch 24, which is a switch unit, is turned on (conductive) when a control signal is output from the signal detection unit 23 described above, and driving power is supplied to the oscillation circuit 25. The signal detection unit 23 and the switch 24 constitute a communication detection unit.

  The oscillation circuit 25 serving as the specific signal output unit generates an oscillation signal having a frequency of about several MHz to several GHz, for example, when a DC voltage is supplied from the rectifier circuit 22 via the switch 24. The oscillation signal serving as the specific signal is, for example, a sine wave, and generates an oscillation signal having a unique frequency for each oscillation circuit 25.

  For example, when there are N communication detection devices 12, oscillation signals of N different frequencies are radiated from these communication detection devices 12. The LAN cable 60 can be specified by detecting the frequency of the oscillation signal. The transmission antenna 26 radiates the oscillation signal generated by the oscillation circuit 25.

  The printed wiring board 27 is a so-called glass epoxy board in which a wiring pattern such as copper is formed on a board made of, for example, a glass cloth base epoxy resin. On the printed wiring board 27, a receiving antenna 20, a matching circuit 21, a rectifying circuit 22, a switch 24, an oscillation circuit 25, and a transmitting antenna 26 are mounted. The printed wiring board 27 and the signal detection unit 23 are housed in a case 28 shown in FIG.

<Configuration example of signal detector>
FIG. 5 is an explanatory diagram showing an example of the configuration of the signal detection unit 23 provided in the communication detection device 12 of FIG.

  The signal detection unit 23 converts a magnetic field generated by a high-frequency signal leaking from the LAN cable 60 during communication into an AC electrical signal, detects the electrical signal, and outputs the control signal described above.

  As shown in FIG. 5, the signal detection unit 23 includes a ferrite core 30, a coil 31, and a control signal generation unit 32.

  The ferrite core 30 is formed, for example, by forming a ceramic magnetic body called ferrite into a hollow cylindrical shape, that is, a ring shape. A coil 31 is wound around the ring of the ferrite core 30. A printed wiring board 27 is connected to both ends of the coil 31. A control signal generation unit 32 is mounted on the printed wiring board 27.

  The ferrite core 30 and the coil 31 convert a magnetic field generated by a high-frequency signal leaking from the LAN cable 60 during communication into an alternating electrical signal. The control signal generation unit 32 uses the driving power of the rectifier circuit 22 as an operating voltage, and generates and outputs a control signal for turning on the switch 24 when an electric signal is received from the coil 31.

<Example of case configuration>
Subsequently, the configuration of the case 28 will be described with reference to FIG. 6, and a technique for housing the signal detection unit 23 and the printed wiring board 27 will be described with reference to FIG. 7.

  FIG. 6 is an explanatory diagram showing an example of a case 28 that houses the signal detection unit 23 and the printed wiring board 27. FIG. 7 is an explanatory diagram illustrating a specific connection configuration example between the signal detection unit 23 and the printed wiring board 27.

  As shown in FIG. 6A, the case 28 is made of a synthetic resin such as plastic, and has two case blocks 40 and 41, respectively. The case blocks 40 and 41 each have a hollow rectangular parallelepiped shape.

  A hinge (not shown) is provided on one long side of the case blocks 40 and 41, and the case blocks 40 and 41 are opened and closed around the hinge serving as a fulcrum. On the other long side of the case blocks 40 and 41, clampers (not shown) for clamping the case blocks 40 and 41 are formed.

  As shown in FIG. 6B, the case blocks 40 and 41 are formed with a groove 40a and a groove 41a each having a semicircular cross section. When the case blocks 40 and 41 are combined, a cylindrical cable storage space is formed by the groove 40a and the groove 41a. The LAN cable 60 is stored in this cable storage space.

  Moreover, as shown in FIG. 7, the ferrite core 30 is divided into two in a semi-cylindrical shape, and one semi-cylindrical ferrite core 30 is accommodated in the hollow portion of the case block 40, and the other semi-cylindrical shape. Ferrite core 30 is housed in the hollow portion of case block 41.

  The printed wiring board 27 is accommodated in the empty space in the hollow portion of the case block 41. A coil 31 is wound around a semi-cylindrical ferrite core 30 housed in a hollow portion of the case block 41.

  Both ends of the coil 31 are connected to the printed wiring board 27 as described above. The printed circuit board 27 is connected to the control signal generator 32 via two wiring patterns (not shown) formed on the printed circuit board 27.

  When attaching the case 28 to the LAN cable 60, the LAN cable 60 is stored in one of the grooves 40a and 41a with the case blocks 40 and 41 opened as shown in FIG. The case blocks 40 and 41 are closed as shown in FIG. Then, the case blocks 40 and 41 are clamped by the clamper. Thereby, the communication detection device 12 is attached to an arbitrary position of the LAN cable 60.

  6 and 7, the case 28 is configured to be detachable from the LAN cable 60. However, when the case 28 is attached to the LAN cable 60, the case 28 is integrated so that it cannot be removed from the LAN cable 60. It is good also as a structure attached.

<Antenna configuration example 1>
FIG. 8 is an explanatory diagram illustrating an example of the reception antenna 20 and the transmission antenna 26 formed on the printed wiring board 27.

  A reception antenna 20 and a transmission antenna 26 (FIG. 4) are respectively formed on one wiring layer of the printed wiring board 27 formed of a two-layer wiring board. The receiving antenna 20 includes a wiring pattern 46 and a wiring pattern 47. The wiring pattern 46 is formed on the left side of the printed wiring board 27 in FIG. 8, and the wiring pattern 47 is formed on the right side thereof.

  The transmission antenna 26 includes a wiring pattern 47 and a wiring pattern 48. The wiring pattern 48 is formed on the right side of the wiring pattern 47. The wiring pattern 47 is a common antenna ground for the reception antenna 20 and the transmission antenna 26 and is a ground wiring pattern in the matching circuit 21, the rectification circuit 22, the switch 24, the oscillation circuit 25, and the control signal generation unit 32.

  The receiving antenna 20 constitutes a so-called dipole antenna by the wiring patterns 46 and 47. Alternatively, the reception antenna 20 may constitute an inverted L antenna by a wiring pattern formed on the printed wiring board 27. The transmission antenna 26 constitutes a dipole antenna by the wiring patterns 47 and 48.

  Further, the matching circuit 21, the rectifier circuit 22, the switch 24, the oscillation circuit 25, and the control signal generation unit 32 are configured to be mounted on a surface opposite to the surface on which the reception antenna 20 and the transmission antenna 26 are formed. Yes. The printed wiring board 27 is accommodated in the case 28 (FIG. 6) as described above.

<Other antenna configuration examples>
FIG. 9 is an explanatory diagram showing another example of the reception antenna 20 and the transmission antenna 26 formed on the printed wiring board 27.

  In this case, the reception antenna 20 is composed of a wiring pattern 46 and a wiring pattern 47 as in FIG. 8, and the transmission antenna 26 is also composed of a wiring pattern 47 and a wiring pattern 48. Is different from FIG.

  The wiring pattern 46 is formed above the printed wiring board 27 in FIG. 9, and a wiring pattern 47 is formed below the wiring pattern 46. A wiring pattern 48 is formed below the wiring pattern 47. Here again, the wiring pattern 47 serves as a common antenna ground for the receiving antenna 20 and the transmitting antenna 26, and the ground wiring pattern in the matching circuit 21, the rectifier circuit 22, the switch 24, the oscillation circuit 25, and the control signal generator 32. It becomes.

  The high-frequency signals transmitted and received by the reception antenna 20 and the transmission antenna 26 shown in FIGS. 8 and 9 are different in frequency and have frequencies that do not overlap with harmonics in order to prevent signal attenuation and the like.

  The electrical length of the wiring pattern 46 of the receiving antenna 20 is desirably set to be ¼ times the wavelength of the frequency of the sine wave f1 transmitted from the wireless power feeder 11. In addition, it is possible to reduce the size of the antenna and to reduce the size of the device by dealing with a higher frequency component having a shorter wavelength.

  Similarly, it is desirable that the electrical length of the wiring pattern 48 of the transmission antenna 26 is set to be ¼ times the wavelength of the frequency of the oscillation signal generated by the oscillation circuit 25. Even in this case, it is possible to reduce the size of the antenna and to reduce the size of the device by dealing with a higher frequency component having a shorter wavelength.

<Example of matching circuit>
FIG. 10 is an explanatory diagram illustrating an example of the matching circuit 21 included in the communication detection device 12 of FIG.

  The matching circuit 21 includes an LC circuit including inductors 33 and 34 and a capacitor 35. One end of the wiring pattern 46 (FIGS. 8 and 9) constituting the receiving antenna 20 and one connection of the capacitor 35 are connected to one connection of the inductor 33, respectively.

  The other connection portion of the inductor 34 is connected to the other connection portion of the capacitor 35. The other connection portion of the inductor 33 and the other connection portion of the inductor 34 are connected to one end portion of the wiring pattern 47 (FIGS. 8 and 9) constituting the reception antenna 20.

  The matching circuit 21 is a so-called π-type matching circuit, and an inductor may be used instead of a capacitor and a capacitor may be used instead of an inductor depending on the matching state. Further, depending on the matching state, a configuration in which the inductor 33 is removed, that is, an open termination may be employed.

<Example of rectifier circuit 1>
FIG. 11 is an explanatory diagram illustrating an example of the rectifier circuit 22 included in the communication detection device 12 of FIG.

  The rectifier circuit 22 includes four diodes 36 to 39 as illustrated. A connecting portion of the capacitor 35 and the inductor 34 shown in FIG. 10 is connected to the cathode of the diode 36 and the anode of the diode 38, respectively.

  The other connection portions of the inductors 33 and 34 in FIG. 10 are connected to the anode of the diode 37 and the cathode of the diode 39, respectively. The anode of the diode 36 is connected to the cathode of the diode 37, and the anode of the diode 39 is connected to the cathode of the diode 38.

  A connection portion between the diode 38 and the diode 39 is a positive side (+) output portion, and a connection portion between the diode 36 and the diode 37 is a negative side (−) output portion, and drive power is supplied from these output portions.

  Thus, the rectifier circuit 22 is a so-called bridge-type full-wave rectifier circuit. When a full-wave rectifier circuit is used, higher power conversion efficiency can be realized than in the case of a half-wave rectifier circuit described later.

<Example 2 of rectifier circuit>
FIG. 12 is an explanatory diagram illustrating another example of the rectifier circuit 22 included in the communication detection device 12 of FIG.

  Although FIG. 11 shows the configuration of the bridge-type full-wave rectifier circuit, the rectifier circuit 22 may be a half-wave rectifier circuit that rectifies only a half cycle of an AC signal, as shown in FIG.

  In this case, the rectifier circuit 22 includes two diodes 51 and 52.

  A connecting portion between the capacitor 35 and the inductor 34 shown in FIG. 10 is connected to the anode of the diode 51 and the cathode of the diode 52.

  The other connection portion of the inductors 33 and 34 in FIG. 10 is connected to the anode of the diode 52. In this case, the cathode of the diode 51 is a positive (+) output unit, the anode of the diode 52 is a negative (−) output unit, and driving power is supplied from these output units.

  In the case of the half-wave rectifier circuit shown in FIG. 12, the power conversion efficiency is lower than that of the full-wave rectifier circuit, but the number of components can be reduced, so that the communication detector 12 can be downsized. Can do.

<Operation example of communication visualization system>
The wireless power feeder 11 always transmits a sine wave f1. In the communication detection device 12, the sine wave f <b> 1 received by the receiving antenna 20 is input to the rectifier circuit 22 via the matching circuit 21.

  The rectifier circuit 22 performs half-wave rectification or full-wave rectification on the received sine wave f1 and supplies the sine wave to the control signal generator 32 included in the switch 24 and the signal detector 23 as drive power.

  As described above, since the driving power is always generated from the sine wave f1 transmitted from the wireless power feeding device 11, it is possible to supply stable power and to prevent malfunction of the communication detection device 12 due to power shortage. Can do.

  In the signal detector 23, when information communication is started via the LAN cable 60, a magnetic field is generated inside the ferrite core 30 by the communication. As a result, a current flows through the coil 31, a voltage induced by the current is generated, and an AC electrical signal is output from the coil 31.

  When the control signal generator 32 detects the electrical signal output from the coil 31, it generates a control signal and outputs it to the control terminal of the switch 24. The control signal is output, for example, while detecting an alternating electrical signal from the coil 31.

  When the control signal is input, the switch 24 is turned on, that is, is in a conductive state, and supplies the driving power generated by the rectifier circuit 22 to the oscillation circuit 25. When the drive power is supplied, the oscillation circuit 25 starts an oscillation operation and generates an oscillation signal having a specific frequency.

  This oscillation signal is radiated by the transmission antenna 26. In this way, the oscillation signal is radiated only to the communication detection device 12 attached to the LAN cable 60 through which information is communicated.

  Subsequently, in the determination device 13, the antenna 16 receives the oscillation signal. The oscillation signal received by the antenna 16 is input to the frequency specifying circuit 17. The frequency specifying circuit 17 specifies the frequency of the input oscillation signal.

  The frequency specifying circuit 17 has a correspondence table indicating information on the frequency and the LAN cable 60 associated with each frequency. The information of the LAN cable 60 is information such as a cable number or a cable name given to the LAN cable and a connection destination.

  The frequency specifying circuit 17 refers to the correspondence table, and acquires information on the LAN cable, that is, information on the LAN cable in which information communication is performed, from the frequency of the specified oscillation signal. Then, the acquired information is displayed on the display unit 18.

  The display by the display unit 18 displays a list of cable numbers of LAN cables connected to the information communication device 61, for example. In the list, the cable number of the LAN cable that is performing information communication is displayed in red, for example, and the cable number that is not performing information communication is displayed in white. In addition, only the cable number of the LAN cable during information communication may be displayed.

  As described above, it is possible to easily determine whether or not all the LAN cables 60 are in information communication by browsing the display unit 18, so that the LAN cables 60 to be removed can be easily identified. As a result, erroneous removal of the LAN cable 60 can be prevented.

  Moreover, since the presence or absence of information communication in all the LAN cables 60 can be confirmed without moving to the information communication device 61, work efficiency can be improved.

  Moreover, since stable driving power can be supplied to the communication detection device 12, the reliability of the communication detection device 12 can be improved.

(Embodiment 2)
<Overview>
In the first embodiment, the signal detection unit 23 shown in FIG. 5 detects the communication of the LAN cable 60. However, in the second embodiment, the ferrite core 30 and the coil 31 constituting the signal detection unit 23 are used. A technique that can eliminate the need to be described.

<Configuration example of communication detection device>
FIG. 13 is an explanatory diagram showing an example of the configuration of the communication detection device 12 according to the second embodiment of the present invention.

  In the second embodiment, the communication detection device 12 includes a reception antenna 20, a matching circuit 21, a rectification circuit 22, a switch 24, an oscillation circuit 25, a transmission antenna 26, a control signal generation unit 32, and an antenna 49, as illustrated. Have

  13 has a configuration in which an antenna 49 is provided instead of the ferrite core 30 and the coil 31 in FIG. 5, and these are all formed on the printed wiring board 27. Since other connection configurations are the same as those in the first embodiment, description thereof is omitted.

<Example of antenna configuration>
FIG. 14 is an explanatory diagram illustrating an example of the reception antenna 20, the transmission antenna 26, and the antenna 49 formed on the printed wiring board 27 included in the communication detection device 12 of FIG.

  A reception antenna 20, a transmission antenna 26, and an antenna 49 are formed on one wiring layer of the printed wiring board 27 formed of a two-layer wiring board. The receiving antenna 20 includes a wiring pattern 46 and a wiring pattern 47. The wiring pattern 46 is formed on the left side of the printed wiring board 27 in FIG. 14, and the wiring pattern 47 is formed on the right side thereof. The transmission antenna 26 includes a wiring pattern 47 and a wiring pattern 48. The wiring pattern 48 is formed on the right side of the wiring pattern 47.

  The antenna 49 includes a wiring pattern 50 and a wiring pattern 47. The wiring pattern 50 is formed above the wiring pattern 47. The wiring pattern 47 is a common antenna ground for the reception antenna 20, the transmission antenna 26, and the antenna 49, and is a ground wiring pattern in the matching circuit 21, the rectification circuit 22, the switch 24, the oscillation circuit 25, and the control signal generator 32. It becomes.

  The receiving antenna 20 constitutes a so-called dipole antenna by the wiring patterns 46 and 47. The transmission antenna 26 constitutes a dipole antenna by the wiring patterns 47 and 48. The antenna 49 constitutes a dipole antenna by the wiring patterns 47 and 50.

  Note that the receiving antenna 20 and the antenna 49 may constitute an inverted L antenna by a wiring pattern formed on the printed wiring board 27.

  In the LAN, the electrical signal in the cable is a digital signal, which is the sum of sine wave signals having a plurality of frequencies. For this reason, the magnetic field generated around the cable also has a plurality of frequency components.

  Therefore, it is desirable to set the electrical length of the wiring pattern 50 of the antenna 49 that detects the presence or absence of communication of the LAN cable 60 to be ¼ times the wavelength of these frequencies. In addition, the electrical length of the wiring pattern 46 in the receiving antenna 20 is set to be ¼ times the wavelength of the frequency of the sine wave f1 transmitted from the wireless power feeder 11 as in the first embodiment. It is desirable to do. The electrical length of the wiring pattern 48 of the transmission antenna 26 is desirably set to be ¼ times the wavelength of the frequency of the oscillation signal generated by the oscillation circuit 25.

  Even in this case, it is possible to reduce the size of the antenna and to reduce the size of the device by dealing with a higher frequency component having a shorter wavelength.

  As described above, the communication detection device 12 can be reduced in weight, size, and cost.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  In addition, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described.

  Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

10 Communication Visualization System 11 Wireless Power Feeder (Power Feeder)
12 communication detection device 13 determination device 14 power oscillation circuit 15 antenna 16 antenna (first receiving antenna)
17 Frequency identification circuit 18 Display unit 20 Receiving antenna (drive power generation unit, second receiving antenna)
21 Matching circuit (drive power generator, matching unit)
22 Rectifier circuit (drive power generator, rectifier)
23 Signal detector (communication detector)
24 switches (communication detection unit, switch unit)
25 Oscillator circuit (specific signal output unit)
26 Transmitting antenna 27 Printed wiring board 28 Case 30 Ferrite core (detection unit)
31 Coil (detector)
32 control signal generator 33 inductor 34 inductor 35 capacitor 36 diode 37 diode 38 diode 39 diode 40 case block 40a groove 41 case block 41a groove 46 wiring pattern 47 wiring pattern 48 wiring pattern 49 antenna 50 wiring pattern 51 diode 52 diode 60 LAN cable (communication cable)
61 Information and communication equipment

Claims (11)

A power supply device that radiates a sine wave;
A communication detection device for detecting that a communication cable connected to an information communication device is in information communication and outputting a detection signal at the time of information communication;
Based on the detection signal output from the communication detection device, a determination device that identifies a communication cable during information communication,
With
The communication detection device includes:
A driving power generation unit that generates a driving power by converting a sine wave radiated by the power feeding device into a DC voltage;
A communication detection unit that outputs a detection signal when information communication is performed using a communication cable connected to the information communication device;
Based on the detection signal output from the communication detection unit, a specific signal output unit that outputs a specific signal for specifying a communication cable;
A transmitting antenna that radiates a specific signal output by the specific signal output unit;
Have
The determination device includes:
A first receiving antenna for receiving the specific signal;
A specifying unit for specifying a communication cable to which the communication detection device is attached from a specific signal received by the first receiving antenna;
Based on the result specified by the specifying unit, a display unit that displays the presence or absence of information communication of the communication cable;
A communication visualization system. The communication visualization system according to claim 1,
The drive power generation unit
A second receiving antenna for receiving a sine wave radiated by the power feeding device;
A rectifying unit that rectifies a sine wave received by the second receiving antenna and converts the sine wave into a DC voltage;
A communication visualization system. The communication visualization system according to claim 2,
Furthermore, the drive power generation unit includes a matching unit that adjusts an impedance between the second reception antenna and the rectification unit. The communication visualization system according to claim 2 or 3,
The communication visualization system, wherein the second reception antenna is a dipole antenna or an inverted L antenna. The communication visualization system according to claim 4,
The communication visualization system, wherein the dipole antenna or the inverted L antenna is formed on a printed wiring board by a wiring pattern. In the communication visualization system according to any one of claims 1 to 5,
The communication detector is
A detector that outputs a voltage induced by a current generated by a magnetic field generated from the communication cable during information communication; and
A detection signal generation unit that outputs a detection signal based on the voltage output from the detection unit;
Based on the detection signal output from the detection signal generation unit, a switch unit that supplies the drive power generated by the drive power generation unit to the specific signal output unit;
A communication visualization system. The communication visualization system according to claim 6, wherein
The detector is
A ferrite core that generates a magnetic field by communication of the communication cable;
A coil that is wound around the ferrite core and outputs a voltage induced by a current generated by the magnetic field generated by the ferrite core;
A communication visualization system. The communication visualization system according to claim 6, wherein
The communication visualization system, wherein the detection unit is a dipole antenna or an inverted L antenna. The communication visualization system according to claim 8, wherein
The communication visualization system, wherein the dipole antenna or the inverted L antenna is formed on a printed wiring board by a wiring pattern. The communication visualization system according to claim 1,
A case for housing the communication detection device;
The communication visualization system, wherein the case is detachably attached to the communication cable. The communication visualization system according to claim 1,
A case for housing the communication detection device;
The communication visualization system, wherein the case is integrally attached to the communication cable.

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