JP5861134B1 - Cable identification method and cable identification device - Google Patents

Abstract

An object of the present invention is to provide a method and apparatus capable of simplifying a specific work by unifying transmission / reception units for transmitting a specific signal and an audio signal to a cable. In order to solve the above problems, a cable identification method according to the present invention is a cable identification method for identifying one cable from a cable bundle in which both ends are connected to form at least two or more closed loops. Means, audio signal conversion means, audio output means, and the same circuit for synthesizing or distributing the specific signal and audio signal and transmitting the two signals to one cable at any position of the cable bundle Transmission / reception means performed in a non-connected manner via a cable, and a cable specifying means for specifying that the cable indicating the maximum value of the specific signal is a cable to which the specific signal is transmitted, A pair of the transmission / reception means is arranged at a transmission position and a reception position. [Selection] Figure 1

Description

  The present invention relates to a cable specifying method and a cable specifying device for specifying one cable from among cable bundles connected between devices.

In recent years, with the development of communication networks such as the Internet and mobile phones, cases where a plurality of cables of the same type are arranged side by side as in mobile phone radio base stations are increasing. When connecting or disconnecting both ends of these cables, there is a risk of cable disconnection. In particular, when the cable length becomes long, it is not easy to determine whether or not work is being performed on the same cable at both ends.
Conventionally, in order to identify a target cable from a plurality of the same type of cables, a method has been adopted in which identification is performed by conduction in a measuring instrument that can confirm the conduction state of a general-purpose product. Further, a method of identifying and specifying by attaching an identification display tool such as attaching a color tape to both ends of the cable has been adopted.

  Recently, in order to easily identify a cable, various methods or apparatuses for identifying a cable by transmitting a signal for identification to the cable and detecting the signal have been invented and disclosed.

  In Patent Document 1, the first phase information acquired from the search signal received by detecting the magnetic flux of the search signal transmitted from the electromagnetic conversion element and generated in the cable in the vicinity by the magnetoelectric conversion element is recorded. The second phase information acquired from the received search signal detected by the magnetoelectric conversion element is compared with the first phase information, and if it is in phase, the search method is specified as a search target cable And an apparatus are disclosed.

  In Patent Document 2, in a communication wiring configuration using a coaxial cable, an AC signal source is connected between the outer conductor at the end of the coaxial cable and the ground, and a current flowing through each coaxial cable is detected at a coaxial cable assembly or connection portion. A method for contrasting coaxial cables is disclosed that identifies the coaxial cable that was looking for the coaxial cable with the highest current.

  In Patent Document 3, an identification signal transmitted from a signal transmitter is received by a signal receiver, a cable is specified by the phase of the signal, and a cable is used for work performed remotely between the transmitter and the receiver. A cable checker capable of communication is disclosed.

Japanese Unexamined Patent Publication No. 2012-117853 JP 2001-051006 A Japanese Patent Laying-Open No. 2005-024402

The conventional method of identifying cables by continuity with a measuring instrument that can check the continuity of a general-purpose product is wired, so if the cable length increases, the cable of the measuring instrument must be extended as well. There is. Further, it cannot be applied to a live cable, and there is a problem that the cable has to be removed once.
On the other hand, in the method of identifying and specifying by attaching an identification indicator such as attaching a color tape to both ends of the cable, the color cannot be read due to deterioration caused by aging at the time of cable replacement work, or There was a problem that the identification display device dropped out.

  In order to solve the problem of the conventional method for identifying a cable, a method for identifying a cable using a pair of identification devices at both ends of the cable has been developed as shown in Patent Document 1 to Patent Document 3. ing.

In Patent Document 1, an AC signal emitted from a transmitter is transmitted through a cable, and a receiver is specified as having the same phase in phase at the receiver. At that time, the direction of the electromagnetic conversion element and the magnetoelectric conversion element are identified. It is necessary to match the direction with a predetermined direction with respect to the extending direction of the cable. However, the extension direction of the cable may not be determined on the route. In such a case, it is not easy to determine the phase, and there is a risk of erroneous specification.
In addition, when a cable connection portion exists between a transmitter and a receiver, it may be determined as an antiphase waveform by a standing wave or a reflected wave, which may make identification difficult.

In Patent Document 2, a current is passed through an outer conductor connected to the ground of a coaxial cable, the current is detected with a leak meter or the like, and the cable is specified with the magnitude of the current. If it is insufficient, it is necessary to prepare for a sufficient grounding condition, and the work efficiency may be lowered depending on the situation at the site.
When the signal input position and the specific work position are far from each other, not only when the worker is alone, but also when the work is carried out by a plurality of workers, there is no means for communication and work efficiency is poor. There was a possibility.

In Patent Document 3, communication using a cable is performed. However, there is a problem in that preparation signals are complicated because the specifying signal and the audio signal have different input / output units.
Similarly to Patent Document 1, when a cable connection portion exists between a transmitter and a receiver, it may be determined as an antiphase waveform by a standing wave or a reflected wave, making it difficult to specify. There was a thing.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a method and an apparatus in which a specific operation can proceed smoothly. In particular, it is an object of the present invention to provide a method and an apparatus capable of simplifying a specific work by unifying transmission / reception units for transmitting a specific signal and an audio signal to a cable.

  In order to solve the above-mentioned problem, the cable identification method of the present invention is the cable identification method for identifying one cable from the cable bundle in which both ends are connected to form at least two or more closed loops. A specific signal generating means for generating a specific signal to be transmitted to the cable; an audio signal converting means for converting audio into an audio signal; an audio output means for converting the audio signal into audio; and the synthesis of the specific signal and the audio signal Alternatively, distribution and transmission / reception means in which transmission of the two signals to one cable performed at an arbitrary position of the cable bundle is performed without connection via the same circuit, and a cable in which the specific signal has a maximum value Cable specifying means for specifying that the specified signal is a transmitted cable, and transmitting position and receiving position of the specified signal Placing a pair of the transmitting and receiving means to preparative, characterized by.

  The cable specifying method of the present invention is characterized in that the same circuit is a circuit having an electromagnetic induction element as a component.

  The cable specifying method of the present invention is characterized in that the audio signal is communicated by a full-duplex communication method.

  The cable specifying method of the present invention is characterized in that the cable is a live wire.

  The cable specifying method of the present invention is characterized in that the cable is a coaxial cable.

Further, the cable identification device of the present invention is a cable identification device used for carrying out a cable identification method for identifying one cable from a cable bundle in which both ends are connected to form at least two or more closed loops , A specific signal generating unit having a specific signal generating unit that generates a specific signal to be transmitted to one cable of the cable bundle , or a specific unit having a cable specifying unit and a display unit, or both, and transmitting and receiving A transmission / reception unit having means, a sound signal conversion unit having sound signal conversion means for converting sound into a sound signal , a sound output unit having sound output means for converting the sound signal into sound, and a control unit. the cable specific means, said cable specific signal indicates a maximum value, perform certain as the specific signal is a cable sent cable A Le specifying means, said transmitting and receiving means, synthetic or distribution of a particular signal and audio signal, and the transmission of the second signal for one of the cable takes place at any position of the cable bundle through the same circuit non Transmission / reception means performed by connection, wherein the control unit includes a signal amplification unit having amplification means for the specific signal and the audio signal, and a noise removal unit for removing noise, the display unit, It has a display means which notifies by a display when a cable is specified in the specific part.

According to the cable specifying method of the present invention, since the specific signal and the audio signal are transmitted to the cable without being connected via the same circuit, there is an effect that the cable specifying operation can be quickly performed. That is, since it is not necessary to prepare a transmission / reception unit for communication or a different communication line separately from the transmission / reception unit of the specifying means, the preparation work is very simple.
Further, when the workers talk to each other, it is possible to reconfirm the specific grounds and transmit the work procedure, and the accuracy of the cable specifying work can be improved.

  Since the transmission of the specific signal and the audio signal to the cable is performed without connection by electromagnetic induction via an electromagnetic induction element such as a coil, it can be easily electrically connected to the cable with a clamper or the like without requiring a tool.

  According to the cable specifying method of the present invention, by adopting a full-duplex communication method for communication, a plurality of workers can freely talk without communication restrictions such as pressing a call button, and work efficiency and safety Has the effect of improving.

  According to the cable specifying method of the present invention, it is possible to specify a cable in a live line state, so that the cable specifying operation can be performed even for an operating facility.

  According to the cable specifying method of the present invention, there is an effect that the cable specification can be easily performed using the external conductor in the live coaxial cable in which the external conductor is grounded to the ground in the mobile phone radio base station.

  According to the cable specifying device of the present invention, it is possible to transmit a specific signal and an audio signal to the cable in a non-connected state using a single transmission / reception unit. There is an effect that a specific work can be performed without the necessity. In addition, when a specific signal indicating the maximum value in the cable bundle is detected, it has a display unit that displays that the identification has been performed, so it is easy to visually confirm without reading the instrument, such as high places There is a synergistic effect of improving safety in the work in

1 is a block diagram of a cable identification device 1 according to the present invention. It is the figure which pinched | interposed the cable identification apparatus 1 which concerns on this invention to the cable CB. It is a figure explaining the identification method of the cable identification method which concerns on this invention. It is a figure explaining the identification method of the cable identification method which concerns on this invention. It is an example of the flowchart of the cable identification method which concerns on this invention. It is an example of the flowchart of the cable identification method which concerns on this invention. It is a schematic diagram of a mobile phone radio base station. It is the figure which represented the example of a connection of the coaxial cable CC of a mobile telephone radio base station by the circuit symbol. 3 is an equivalent circuit of a cable bundle grounded to an earth E. It is an example of the sequence chart in the case of identifying the coaxial cable CC using the cable identifying device 1 according to the present invention. It is an example of the sequence chart in the case of identifying the coaxial cable CC using the cable identifying device 1 according to the present invention. It is an example of the sequence chart in the case of identifying the coaxial cable CC using the cable identifying device 1 according to the present invention.

  EMBODIMENT OF THE INVENTION The form for implementing the cable identification method and the cable identification device 1 which concern on this invention is demonstrated with reference to drawings.

FIG. 1 is a block diagram of a cable identification device 1 according to the present invention.
The cable identification device 1 used for carrying out the cable identification method according to the present invention includes a specific signal generation unit 30, a specification unit 40, a display unit 50, a transmission / reception unit 10, an audio signal conversion unit 70, an audio output unit 60, and The control unit 20 is provided.

The specific signal generation unit 30 includes specific signal generation means for generating a specific signal IS to be transmitted to one cable CB in the cable bundle.
The specific signal IS is a current signal having a frequency band outside the audio frequency band where the polarity is inverted every certain time. Although it is easy to generate the specific signal IS by an oscillation circuit formed by an operational amplifier, it is limited to this if a current signal having a frequency band outside the audio frequency band whose polarity is inverted every certain time can be generated. It is not a thing.

The specifying unit 40 includes cable specifying means for specifying that the cable CB having the maximum specific signal IS is the cable CB to which the specific signal IS is transmitted.
The current value of the received specific signal IS is compared with a preset reference value, and it is determined whether or not the specific signal IS is the maximum value depending on whether or not the reference value is exceeded.

The display unit 50 includes display means for performing notification by display when the specifying unit 40 specifies the cable CB.
When it is determined that the specific signal IS is the maximum value, a light emitting element such as an LED is caused to emit light to notify that the cable has been specified. Further, if the current value of the specific signal IS is displayed using a display means having a large amount of display information such as a liquid crystal display device, it is possible to assist the specification of the cable by the numerical value.

The transmission / reception unit 10 disconnects the specific signal IS and the audio signal through the same circuit for synthesizing or distributing the specific signal IS and the audio signal and transmitting the specific signal IS and the audio signal to one cable CB performed at an arbitrary position of the cable bundle. It has the transmission / reception means performed by.
The specific signal IS is a unidirectional signal from the transmission side to the reception side that makes a specific determination in principle. However, in some cases, the transmission side and the reception side may be switched. On the other hand, the audio signal is a bidirectional signal.
The audio signal is communicated by the full-duplex communication method via the cable CB. Therefore, it is necessary to handle the specific signal IS and the audio signal separately from the transmission signal and the reception signal.
In FIG. 1, a transmission signal and a reception signal are distributed using a hybrid circuit 11.
For example, the audio output unit 60 or the identification unit 40 of the transmission side cable identification device 1 is not input with the specific signal IS and the audio signal transmitted by itself, and only the audio signal transmitted from the reception side cable identification device 1 is an audio output unit. 60.
Although the hybrid circuit 11 is employed in the present embodiment, the present invention is not limited to this as long as the circuit can synthesize or separate bidirectional signals.
In the present embodiment, the full-duplex communication method is exemplified, but a half-duplex communication method may be adopted using a transmission / reception selector switch.
Transmission of the specific signal IS and the audio signal to one cable CB performed at an arbitrary position of the cable bundle is performed without connection via the transformer 12 and the clamp coil 13. The clamp coil 13 is an electromagnetic induction element and can flow an induction current in a non-contact manner with respect to the cable CB forming a closed circuit. A part of the coil can be opened and closed, and can be clamped to the cable CB without using a tool or the like, and a magnetic flux for inducing current around the cable can be generated.
In this embodiment, the electromagnetic induction method is exemplified for non-contact power transmission. However, in recent years, various methods such as a magnetic resonance method, a microwave discharge method, a radio wave reception method, an electric field coupling method, or a wireless power feeding method using ultrasonic waves are used. Non-contact power transmission systems have been developed, and equivalent effects can be obtained even if the electromagnetic induction system is replaced with these.

  The audio signal conversion unit 70 includes a microphone as means for converting audio into an audio signal. The microphone may be of any type, but the audio signal is converted into a current signal.

  The audio output unit 60 includes a headphone as means for converting an audio signal into audio. Although a speaker may be used, a headphone that can eliminate external noise is preferable because work is mainly performed outdoors.

  The control unit 20 includes a signal amplification unit 23 and a noise removal unit 21.

The signal amplifier 23 has means for amplifying the specific signal IS and the audio signal.
The specific signal IS amplifies the signal generated by the specific signal generation unit 30 to a signal that can be separated from noise and transmitted.
The audio signal is amplified to a signal that can be transmitted and separated from noise by the audio amplifier 24 by the audio amplifier 24. Similarly, the received audio signal is amplified to an audible level by the audio amplifier 24.
Since the sensitivity decreases as the number of cables CB increases, it is necessary to amplify the cables.

The noise removing unit 21 removes a noise signal.
In addition to removing external noise, the specific signal IS and the audio signal are separated, and only the audio signal is sent to the audio output unit 60 and only the specific signal IS is sent to the specifying unit 40.
FIG. 1 shows a band pass filter (BPF) 22. The audio output unit 60 uses a filter that passes only the audio frequency band. In addition, a filter that passes only the frequency band adopted by the specific signal IS is used for the specifying unit 40.

  In addition, the power supply unit 80 is provided. A power source necessary for driving the cable specifying device 1 is generated. Considering the work place, it is preferable to use a battery or the like to secure a power source in the apparatus. The power supply unit 80 includes a start switch 81.

FIG. 2 is a diagram in which the cable identification device 1 according to the present invention is sandwiched between cables CB.
FIG. 2 shows an appearance of the cable identification device 1. A clamp coil 13 which is a part of the transmission / reception unit 10 is arranged on the upper part, and the cable CB is sandwiched between them. The lower housing includes a hybrid circuit 11 that is a part of the transmission / reception unit 10, a specific signal generation unit 30, a specific unit 40, a display unit 50, an audio signal conversion unit 70 (microphone), and an audio output unit 60 (headphone). And the control part 20 is incorporated.
The cable identification device 1 may be a transmission-only cable identification device 6 including the specific signal generation unit 30, the transmission / reception unit 10, the audio signal conversion unit 70, the audio output unit 60, and the control unit 20.
The cable identification device 1 may be a reception-only cable identification device 7 including the identification unit 40, the display unit 50, the transmission / reception unit 10, the audio signal conversion unit 70, the audio output unit 60, and the control unit 20.
In FIG. 2, in the case of the cable identification device 1 having the same configuration, it is possible to play either the reception side or the transmission side.
In the case of a device with different functions such as the transmission dedicated cable specifying device 6 and the reception dedicated cable specifying device 7, the transmission dedicated cable specifying device 6 is arranged at the transmission position TP and the reception dedicated cable specifying device 7 is arranged at the reception position RP. .
The transmission position TP and the reception position RP may be arbitrary positions on the cable CB forming a closed loop.
The specific signal IS is transmitted via the clamp coil 13 of the transmission-only cable specifying device 6 at the transmission position TP, and the specific signal IS is received via the clamp coil 13 of the reception-only cable specifying device 7 at the reception position RP. To identify.
Since the specific signal IS and the audio signal can be transmitted to the cable CB without being connected as shown in FIG. 2, the specific work can be performed even if the cable CB is a live line. In that case, it must be noted that the specific signal IS and the audio signal become noise for the cable CB.
FIG. 2 shows that the two cable specifying devices are sandwiched with respect to the same cable CB. However, during the specific work, there are naturally cases where the two cable specifying devices sandwich different cables CB. To do.

3 and 4 are diagrams for explaining a method for specifying the cable specifying method according to the present invention.
One cable is specified from N cable bundles that are connected at both ends to form a closed loop of (N-1). The resistance value of each cable CB may be approximately the same.
A specific signal IS having a current value i is transmitted to the cable CB (1) through the clamp coil 13 of the transmission-only cable specifying device 6.
In this case, a specific signal IS having a current value (1 / (N-1)) i flows from the cable CB (2) to the cable CB (N).
On the other hand, the specific signal IS having the current value i flows through the cable CB (1) to be specified without being shunted.
The specifying unit 40 compares the preset reference value with the detected current value and determines that the cable is the cable CB to which the specific signal IS is transmitted when the reference value is exceeded. If it falls below, it is determined that the cable is not the cable CB to which the specific signal IS is transmitted, and the cable is specified.
The value of the current value 1 / (N−1) i is maximum in the case of two closed loops (N = 3), and does not exceed 1 / 2i. That is, by setting the reference value to a value exceeding 1 / 2i, it is possible to specify a cable bundle in which two or more closed loops are formed. In consideration of errors of circuit elements and the like, the reference value is preferably set to about 2 / 3i.
For example, as shown in FIG. 3, when the reception-only cable specifying device 7 holds the cable CB (N), the specifying unit 40 uses the current value ( 1 / (N-1)) i is detected.
Therefore, when the current value (1 / (N-1)) i is detected, it is determined that the cable CB is not the one where the specific signal IS is transmitted.
On the other hand, as shown in FIG. 4, when the reception dedicated cable specifying device 7 holds the cable CB (1), the current value i of the specific signal IS transmitted from the transmission dedicated cable specifying device 6 is substantially attenuated. Without being detected by the specifying unit 40 of the reception-only cable specifying device 7.
The specifying unit 40 compares the reference value with the detected current value and exceeds the reference value, and thus determines that the cable CB (1) has transmitted the specific signal IS.

5 and 6 are examples of flowcharts of the cable specifying method according to the present invention.
The flowchart in the case where N cables CB form (N−1) closed loops is shown.
The variable p in step s102 represents the number of unspecified cables CB. Immediately after the start, N is unspecified. The variable n is a variable indicating how many cables CB are being specified. Immediately after the start, the first is being identified.

  The variable m in step s103 is a variable representing how many cables CB are being specified by the receiving side cable specifying device 1. It is initialized each time a cable is specified.

As shown in FIG. 2, the clamp coil 13 of the cable specifying device 1 is clamped at an arbitrary position of the cable bundle (s104, s105).
In this step, it is not determined which cable identification device 1 is the transmission side or the reception side.
After the cable CB is completely attached, a preparation completion report is sent from both workers carrying the cable identification device 1 using the voice call function of the cable identification device 1 (s106).

It is determined whether or not it is before the start of a specific work for one cable (s107), and if it is before the start, it is determined which worker will be the transmission side or the reception side using the voice call function (s113).
The transmission side and the reception side may be determined before step s101. Instead of determining each time one cable is specified, the division of roles between the transmitting side and the receiving side determined before the first cable specifying operation may be continued until the Nth specification is completed.

  A specific signal IS is transmitted from the transmission side cable specifying device 1 (s108). Thereafter, the receiving side cable specifying device 1 receives the specifying signal IS (s109).

  Based on the above-described reference value, the identifying unit 40 determines whether the received identifying signal IS is a cable CB to which the identifying signal IS is transmitted (s110).

  If the cable CB sandwiched by the receiving side cable specifying device 1 is the cable CB to which the specific signal IS is transmitted, it is specified by attaching a mark or the like, assuming that the n-th cable specifying operation has been completed. The removed cable is excluded (s204). The identified cable may be removed, but if there are two closed loops (N = 3), the mark must be attached without further removal. This is because there is no difference in the current value of the specific signal IS when the closed loop becomes one.

  Thereafter, the variable p representing the number of unspecified cables CB is decremented (decremented by one), and the variable n representing the number of cables CB being identified is incremented (increased by one) (s205). Thereafter, the process returns to step s103.

  On the other hand, when the cable CB sandwiching the receiving side cable specifying device 1 is not the cable CB to which the specifying signal IS is transmitted, the receiving side cable specifying device 1 performs the specifying operation on all the unspecified cables CB. It is determined whether or not (s111). If the identification work cannot be performed even though the specific work has been completed for all the unspecified cables CB, the process ends as an error (s112).

  If there is still a cable CB that has not been specified by the receiving-side cable specifying device 1, the variable m indicating the number of cables that the receiving-side cable specifying device 1 is specifying is incremented (one The reception side cable specifying device 1 is moved to the next unspecified cable CB (s302). Thereafter, the process returns to step s106. The transmitting side cable specifying device 1 is not moved to another cable CB until the specification of one cable is completed.

  The above steps are continued until the variable n becomes (N−1) (s203). (N-1) When the specification of the cable for the first time is completed, the Nth cable is automatically specified.

An embodiment for specifying a plurality of coaxial cables extending from the radio WS to the antenna AN in the mobile phone radio base station will be described below.
FIG. 7 is a schematic diagram of a mobile phone radio base station.
In the mobile phone radio base station, a coaxial cable CC is used to carry radio waves for communication of the mobile phone. The cable path from the radio WS to the antenna AN is often a black box BB. In this case, the clamping position CP1 is set outside the connector CN of the wireless device WS. On the other hand, the other clamping position CP2 is set near the radio WS of the antenna AN side connector CN.
As shown in FIG. 7, in the coaxial cable CC, the outer conductor is grounded at the radio device WS side end and the antenna AN side end. A connection example of the coaxial cable CC of the mobile phone radio base station is represented by a circuit symbol as shown in FIG.
In this embodiment, a plurality of closed loops are formed by the outer conductor of the coaxial cable CC. Furthermore, since the ground is grounded at both ends of the coaxial cable CC, one closed loop is formed through the ground E.
Therefore, it is possible to perform a specific operation even when the cable is in a live state.

FIG. 9 is an equivalent circuit of a cable bundle grounded to the ground E.
When N coaxial cables CC are provided, this is equivalent to the presence of (N + 1) closed loops through the ground E connected to the outer conductors at both ends of the coaxial cable CC.
Therefore, even in the case of two coaxial cables CC that apparently have only one closed loop, there are effectively two closed loops, and the coaxial cable can be specified.

10 to 12 show an example of a sequence chart in the case where the coaxial cable is specified using the cable specifying device 1 according to the present invention.
In a mobile phone radio base station, for example, two workers are used to specify a coaxial cable.
It is assumed that there are N coaxial cables CC to be specified, and the outer conductors are grounded at both ends of the coaxial cable CC (s9001).

  For example, it is assumed that the worker A operates the transmission-only cable specifying device 6 (s1000) and the worker B operates the reception-only cable specifying device 7 (s2000). Note that a general-purpose cable identification device 1 can also be used.

  The worker A sandwiches the transmission-only cable specifying device 6 at the sandwiching position CP1 of the first arbitrary coaxial cable CC (s1001). The start switch 81 is turned on, the headphones are attached, and a preparation completion report from the worker B is awaited (s1002).

  The worker B clamps the reception-only cable specifying device 7 at the clamp position CP2 of the first arbitrary coaxial cable CC (s2001). The start switch 81 is turned on and the headphones are attached (s2002). Thereafter, the completion of preparation is transmitted to the worker A by voice. The audio signal is input from the microphone of the reception-only cable specifying device 7 and transmitted to the coaxial cable CC via the transmission / reception unit 10 (s2003).

The transmission-only cable specifying device 6 receives the audio signal from the reception-only cable specifying device 7 via the transmission / reception unit 10 and outputs it to the headphones (s1003).
When the worker A receives the preparation completion report, the worker A and the worker B transmit each other, and confirm the side that transmits the specific signal IS and the side that receives the specific signal IS and specifies the coaxial cable ( s1004, s2004). In this sequence chart, the worker A carrying the transmission-only cable identification device 6 is the transmission side, and the worker B carrying the reception-only cable identification device 7 is the reception side (s1004, s2004). Each role may be confirmed during the work, but may be confirmed in advance.

The worker A is notified by voice that the worker A transmits the specific signal IS (s1005). In response to the transmission, the worker B enters a confirmation posture of the LED to be turned on when the coaxial cable CC that has transmitted the specific signal IS is pinched (s2005).
The worker A turns on the transmission switch 26 to transmit the specific signal IS (s1006). The specific signal IS is transmitted to the coaxial cable CC via the transmission / reception unit 10 of the transmission-only cable specifying device 6.
The specific signal IS is received by the reception dedicated cable specifying device 7 and determined by the specifying unit 40. If it is determined that the specific signal IS is not transmitted without the LED being lit, At the clamping position CP2, the reception-only cable specifying device 7 is sequentially moved to an unspecified coaxial cable CC to search for a coaxial cable CC whose LED is lit (s2006).

  If the LED lights and the coaxial cable can be identified (s2007), the fact that the identification of the first coaxial cable has been completed is transmitted to the worker A by voice (s2008).

  If the worker B receives a notification to the effect that the identification of the first coaxial cable has been completed (s1007), the worker A removes it by marking the specified coaxial cable, and any unspecified coaxial cable. The transmission dedicated cable identifying device 6 is moved to the second clamping position CP1 of the cable CC (s1008).

  The completion of preparation for the second coaxial cable CC is transmitted to the worker B by voice (s1009).

  Upon receipt of the preparation completion notification from the worker A (s2009), the specified coaxial cable is excluded by marking it, and the reception-only cable specifying device 7 is placed at the pinching position CP2 of any unspecified coaxial cable CC. Is moved (s2010). Thereafter, the completion of preparation is transmitted to the worker A by voice (s2011).

If the worker A receives the notification of the completion of preparation (s1010), the worker A is notified to the worker B by voice that the specific signal IS is transmitted (s1011). In response to the transmission, the worker B enters a confirmation posture of the LED to be turned on when the coaxial cable CC that has transmitted the specific signal IS is pinched (s2012).
The worker A turns on the transmission switch 26 to transmit the specific signal IS (s1012). The specific signal IS is transmitted to the coaxial cable CC via the transmission / reception unit 10 of the transmission-only cable specifying device 6.
The specific signal IS is received by the reception dedicated cable specifying device 7 and determined by the specifying unit 40. If it is determined that the specific signal IS is not transmitted without the LED being lit, At the clamping position CP2, the reception-only cable specifying device 7 is sequentially moved to an unspecified coaxial cable CC to search for a coaxial cable CC whose LED is lit (s2013).

  If the LED is turned on and the coaxial cable can be identified (s2014), the fact that the identification of the second coaxial cable is completed is transmitted to the worker A by voice (s2015).

  The worker A receives a notification from the worker B that the identification of the second coaxial cable has been completed (s1013).

  Repeat until N-1 coaxial cables are identified. If N-1 pieces are specified, it is not necessary to carry out the remaining one specifying work, and it is inevitably determined (s9002).

  If the same number of receiving side cable specifying devices 1 as the number of cable bundles are prepared, the specification of one cable is completed by one specifying operation without moving the receiving side cable specifying device 1. If one line can be specified, the transmission side cable specifying apparatus 1 may be moved, and this operation may be repeated until N-1 lines can be specified. Compared with the case of the first embodiment, the time can be shortened and it is efficient.

  The present invention can also be used in construction work in which a plurality of cables of the same type need to be arranged side by side, or in replacement work of a plurality of cables of the same kind already arranged.

DESCRIPTION OF SYMBOLS 1 Cable identification apparatus 6 Transmission exclusive cable identification apparatus 7 Reception exclusive cable identification apparatus 10 Transmission / reception part 11 Hybrid circuit 12 Transformer 13 Clamp coil 20 Control part 21 Noise removal part 22 Band pass filter (BPF)
23 Signal Amplifier 24 Audio Amplifier 26 Transmission Switch 30 Specific Signal Generator 40 Specific Unit 50 Display Unit 60 Audio Output Unit 70 Audio Signal Conversion Unit 80 Power Supply Unit 81 Start Switch

AN Antenna BB Black box CB Cable CC Coaxial cable CN Connector CP1 Clamping position CP2 Clamping position E Earth GND Common ground IS Specific signal RP Reception position TP Transmission position WS Radio

i Current value of specific signal m Variable N indicating how many cables are being specified by the receiving side cable specifying device n Constant indicating the number of cables to be specified n How many cables are being specified Variable representing p Variable representing the number of unspecified cables

Claims (6)

In a cable identification method for identifying one cable from a cable bundle in which both ends are connected to form at least two or more closed loops,
Specific signal generating means for generating a specific signal to be transmitted to one of the cable bundles;
Audio signal conversion means for converting audio into an audio signal;
Voice output means for converting the voice signal into voice;
Transmission / reception means in which the specific signal and the audio signal are combined or distributed, and the transmission of the two signals to one cable performed at an arbitrary position of the cable bundle is performed without connection via the same circuit;
A cable specifying means for specifying that the cable indicating the maximum value of the specific signal is a cable from which the specific signal is transmitted;
Have
Arranging a pair of the transmitting / receiving means at a transmission position and a reception position of the specific signal;
A cable identification method characterized by. The same circuit is
A circuit comprising an electromagnetic induction element as a component;
The cable specifying method according to claim 1. The audio signal is
That communication is performed using the full-duplex communication method,
The cable identification method according to claim 1 or 2, wherein The cable is
Being live,
The cable identification method according to any one of claims 1 to 3, wherein: The cable is
A coaxial cable,
The cable identification method according to any one of claims 1 to 4, wherein: A cable identification device used for carrying out a cable identification method for identifying one cable from a cable bundle in which both ends are connected to form at least two or more closed loops ,
A specific signal generating unit having specific signal generating means for generating a specific signal to be transmitted to one cable of the cable bundle ;
Or
A specifying unit and a display unit having a cable specifying means,
With one or both of
A transmission / reception unit having transmission / reception means;
An audio signal conversion unit having audio signal conversion means for converting audio into an audio signal;
An audio output unit having audio output means for converting the audio signal into audio ;
A control unit;
With
The cable specifying means is
The cable indicating the maximum value of the specific signal is a cable specifying means for specifying as the cable from which the specific signal is transmitted,
The transmitting / receiving means is
Transmission / reception means in which the synthesis or distribution of the specific signal and the audio signal and the transmission of the two signals to one cable performed at an arbitrary position of the cable bundle are performed without connection via the same circuit,
The controller is
A signal amplifying unit having means for amplifying the specific signal and the audio signal;
A noise removing unit for removing noise;
With
The display unit
Display means for performing notification by display when a cable is specified in the specifying unit;
Having
A cable identification device characterized by that.