JPH05180893A - Continuity checking method and apparatus for plural conductors - Google Patents

Abstract

PURPOSE:To check the continuity of plural conductors with good work efficiency, with high efficiency and correctly by means of the continuation of rumbling of acoustic signals by changing the condition of connection in such a manner that the continuity condition between a predetermined conductor and the remaining plural conductors changes with the lapse of time at one-side ends of plural conductors (first means), and generating a mutually identified acoustic signal to the remaining conductors at the other-side ends thereof (second means). CONSTITUTION:The connecting condition between a predetermined conductor, for example, an earthing conductor 24 in shield cables 23, 31-33 and the remaining plural conductors is changed by a first means 21 in such a manner that the continuity condition changes with the lapse of time at one-side ends 25a-25c of plural conductors. When the predetermined conductor and the remaining conductors are put in their mutual continuity or interception condition, mutually identified acoustic signals are generated to the remaining conductors by a second means 22. At the other-side ends, plural acoustic signals are forced to rumble together and pause sequentially one by one, whereby the correspondence between the connection of each conductor at one-side ends 25a-25c and the remaining conductors to which the acoustic signals of rumbling continuation at the other-side ends 25d-25f can be known.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention can be advantageously carried out, for example, for inspecting the electrical continuity of both ends of a core wire of a cable constructed by electrically insulating a plurality of core wires from each other. The present invention relates to a method and an apparatus for inspecting the continuity of a plurality of conductive wires that can be used.

[0002]

2. Description of the Related Art A typical prior art is shown in FIG. One end 2 and the other end 3 of a cable 1 carrying an electrical signal
In order to check that the one end 4a and the other end 4b of the core wire 4 electrically insulated from each other are electrically connected to each other, one end 2 and the other end 3 of the cable 1 are checked. Inspectors 5 and 6 are assigned to. This cable 1 is assumed to be a shield wire and has a ground conductor 7 which is an outer conductor thereof. An inspector 5 at one end 2 of the cable 1 connects to the ground conductor 7 by one clip 8 and a clip 10 connected to this clip 8 via a line 9.
Is manually transmitted to one of the ends 4a of the plurality of core wires 4 while repeatedly connecting / disconnecting. At the other end 3 of the cable 1, another inspector 6 measures the resistance using an ohmmeter 11 such as a tester. The ohmmeter 11 has a pointer 12 for indicating resistance. One connection terminal of the ohmmeter 11 is connected to the ground conductor 7 via the line 13. The other end 14 of the resistance meter 11 sequentially connects any one of the other ends 4b of the plurality of core wires 4, and in this connection state, the inspector 6 confirms the deflection of the pointer 12 of the resistance meter 11. In this way, one end 4a of one of the core wires 4 which is turned on / off via the clips 8 and 10 and the line 9 at the one end 2 of the cable 1 and the other end 3 of the cable 1 are inspected. Member 6 clips 15 via line 14
It is possible to know the conduction state with the other end 4b of one of the core wires 4 connected by.

[0003]

In the prior art shown in FIG. 4 as described above, two workers 5 and 6 are required for the continuity inspection of the core wire 4 of the cable 1, and further, these workers are required. An additional inspector 16 may be needed to communicate with each other.

The inspector 6 uses the resistance meter 11 to guide the guideline 1.
The inspector 6 has to work while seeing the deflection of No. 2 and communicating with the other inspector 5 by using a wireless device and the like, which requires a lot of labor for measurement. Therefore, the time for the continuity check becomes long.

Further, in such a prior art, particularly when the cable 1 is provided over a long distance, it becomes difficult to keep the timing of the work of the worker 5 and the timing of the work of the other inspector 6, and the continuity is maintained. Workability for inspection is reduced.

Also in such prior art, the inspector 5 connects / connects the clip 10 to one end 4a of one of the core wires 4.
It is necessary to repeat the detachment and transmit the ON / OFF signal, and therefore workability is poor. The worker 6 is the resistance meter 1
There is a problem that erroneous measurement is likely to occur due to noise when the resistance is measured by 1. To improve work efficiency,
When the contact / disconnection between the clip 10 and the one end 4a of the core wire 4 is rapidly repeated in a short cycle, the pointer 12 of the resistance meter 11
The fluctuation of the electric field becomes small and the continuity test cannot be performed accurately. Therefore, it is necessary to slowly connect / disconnect the clip 10 and the one end 4a of the core wire 4, which causes a problem that the continuity test takes a long time.

It is an object of the present invention to carry out a continuity inspection method for a plurality of conductors such as a plurality of core wires of a cable with good workability, efficiently and accurately. And to provide a device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, at one end of a plurality of conducting wires, a conduction state is temporally changed between a predetermined conducting wire of the conducting wires and each of the remaining plurality of conducting wires. Thus, when the connection state is changed, and the other end of the conducting wire is in a conductive state or a disconnecting state between the predetermined conducting wire and each of the remaining conducting wires, the remaining conducting wires are distinguished from each other. A method for inspecting continuity between a plurality of conductors, wherein a possible acoustic signal is generated, and continuity between one end and the other end of each of the remaining conductors is inspected according to a continuous state of ringing of each acoustic signal.

Further, according to the present invention, at one end of the plurality of conductors, a first terminal connectable to a predetermined conductor among the conductors and a second terminal connectable to each of the remaining plurality of conductors are provided. First means for changing the conduction state between the first terminal and each second terminal by temporally different from each other, and the third terminal connectable to the predetermined conducting wire at the other end of the conducting wire. And a fourth terminal that can be connected to each of the remaining conductors, and corresponds to each of the remaining conductors during a period in which the third terminal and each of the fourth terminals are in a conductive or cutoff state. And a second means for generating mutually identifiable acoustic signals.

[0010]

According to the present invention, at one end of a plurality of conductors, such as a multi-core shielded cable, the first means allows a predetermined conductor of those conductors, for example, a ground conductor in the shielded cable, and a residual. The connection state is changed between the plurality of conductive wires of the above so that the conductive state changes with time, and the other end of the conductive wire is changed by the second means.
When the predetermined conducting wire and each of the remaining conducting wires are in a conducting or blocking state, mutually identifiable acoustic signals are generated corresponding to each of the remaining conducting wires, and a continuous state of ringing of the acoustic signal is generated. By means of, for example, a plurality of sound signals are sounded all at once and are made to pause one by one in sequence, whereby the connection of each conductor at the one end and the continuation of the ringing at the other end are performed. The correspondence with each of the remaining conductors to which a signal is applied can be known.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing the overall construction of an embodiment of the present invention. Multi-core shielded cable 23
Has a ground conductor 24, which is a shield wire, and a plurality (3 in this embodiment) of core wires 25 electrically insulated from each other. At one end 26 of the cable 23, a conductor wire 25 that is a core wire
Of the three, one end is denoted by reference numerals 25a, 25b, 25c
, Respectively. At the other end 27 of the cable 23, the conductor 2
5, the other three ends are designated by reference numerals 25d, 25e, 25
Each is indicated by f. One end 26 of the cable 23 has a first
The means 21 is arranged, the other end 27 is provided with the second means 22, and one inspector 28 works on the side of the second means 22.

Even if the cable 23 is additionally provided as indicated by the reference numerals 31, 32, 33,
According to the present invention, it is possible to perform a continuity test on each conductor 25.

FIG. 2 is an electric circuit diagram specifically showing the electrical construction of the first means 21 and the second means 22. In the first means 21, the DC power supply 35 such as a battery supplies power to the timer 39 via the DC power supply 36 and the lines 37 and 38. The timer 39 has timer relays 41 to 44 connected between the lines 37 and 38. Timer relay 41 ~
43 has a similar configuration, and each timer relay 41, 4
2, 43 have normally open switches 45, 46, 47, respectively, and these switches 45, 46, 47 are connected in series to another timer relay 44. Timer relay 4
The terminals 48, 49, 50 of 1, 42, 43 are connected to the line 51.
Normally connected switch 5 of the timer relay 44
2 to the line 37.

The timer relays 41, 42, 43 further include normally closed switches 53, 54, 55, respectively. The timer relay 41 has the power switch 36 turned on,
In the state where the switch 52 is cut off and therefore the terminal 48 is not connected to the line 37, the time W1 is preset after the power switch 36 is turned on, and the switch 45 is cut off during this time W1. And the switch 53 is kept conductive. After the lapse of this time W1, the switch 45 is turned on and the switch 53 is turned off. When relay 52 is conducting and therefore terminal 48 is connected to line 37 and is at a low level, it does not perform a timekeeping operation, keeping switch 45 off and switch 53 on. The remaining timer relays 42 and 43 also operate similarly to the timer relay 41, and the times W2 and W3 are set respectively. The timer relay 44 keeps the switch 52 cut off and keeps the other normally closed switch 56 conductive when at least one of the switches 45, 46 and 47 is cut off and power is not supplied. .. The timer relay 44 clocks a predetermined time W4 from the time when the switches 45, 46 and 47 are turned on and power is supplied from the power source 35 through the power switch 36, and the switch 52 is turned on during this time W4. Conduct, switch 56
Shut off. A light emitting diode 57 for displaying and a current limiting resistor 58 of the light emitting diode 57 are connected in series to the switch 56 between the lines 37 and 38.

In the first means 21, the switches 53, 5
One ends of 4, 55 are connected to the line 59, and the first terminal 6 such as a clip is connected through a flexible green line 60.
Connected to 1. The other end of each switch 53, 54, 59 has a green flexible line 62 and a white flexible line 63.
And each second terminal 65, 6 such as a plurality (3 in this embodiment) of clips via a red flexible line 64.
6 and 67, respectively.

FIG. 3 is a diagram for explaining the operation of the first means 21 shown in FIG. Each timer relay 41, 4
The switching states of the switches 53, 54 and 55 of Nos. 2 and 43 are shown in FIGS. 3 (1), 3 (2) and 3 (3), respectively. When the power switch 36 is turned on at time t0, the switches 45, 46 and 47 are cut off, so that the switch 52 of the timer relay 44 is cut off and the switch 56 is turned on. Therefore, the light emitting diode 57 lights up. At this time, the switch 52 is cut off, therefore the timer relays 41, 42, 43 perform the clocking operation, the switches 45, 46, 47 are cut off, and the switches 53, 54, 55 are conductive.

At time t1 when the time W1 set by the timer relay 41 elapses from time t0, the switch 45 is turned on, the switch 53 is turned off, and the first terminal 61 and the second terminal 65 are turned off. ..

After time t1, the switches 46 and 47 are cut off and the switches 54 and 55 are turned on. At time t2 when the time W2 set by the timer relay 42 elapses from time t0, the switch 46 conducts and the switch 54 cuts off. In this way, the first terminal 61 and the second terminal 66 are cut off.

At time t3 when time W3 set by the timer relay 43 has elapsed from time t0, the switch 47 is activated.
Is cut off, and the switch 55 is cut off. Thus, after the time t3, the first terminal 61 and all the second terminals 65, 6 are
The state of being cut off from 6, 67 is maintained. After the time t3, the switches 45, 46, 47 become conductive, so that the timer relay 44 keeps the switch 52 conductive for a predetermined time W4.
After time t4 when 4 has elapsed, the same operation as that after time t0 is repeated again. The light emitting diode 57 is
The light is turned on during the period from time t0 to t3 and turned off during the period from time t3 to t4. For example, W1 = 5 seconds, W2 = 10
Seconds, W3 = 15 seconds, W4 = 20 seconds.

In summary, the first means 21 uses the time t0.
From time W1 to first terminal 61 and all second terminals 6
5, 66, 67 remain electrically connected, and thereafter, at times t1 to t2, the first terminal 61 and the two second terminals 6 are connected.
6, 67 are brought into conduction, the first terminal 61 and one second terminal 67 are brought into conduction during the period from time t2 to t3, and after time t3, the first terminal 61 and all the first terminals 61 are brought into conduction. The two terminals 65, 66 and 67 are cut off.

The second means 22 is a DC power source 71 such as a battery.
Have. The operation checking push button switch 72 is connected to the input terminal 74 of the oscillation circuit 73. This oscillator circuit 7
3 further has input terminals 75 and 76 and an output terminal 77, and the input terminals 74, 75 and 76 shown in Table 1 are provided.
By the logical operation of the high level H and the low level L of, the output terminal 77 outputs the sound of the machine gun "Gargaga", the sound of the fire engine "WooU" and the sound of the American patrol car (abbreviated as "Amepat") ..

[0022]

[Table 1]

The output of the output terminal 77 is given to the speaker 79 via the power amplification transistor 78.

The positive terminal of the power source 71 is connected to a third terminal 82 such as a clip via a green flexible line 81. The input terminals 74 and 75 are connected to the blue flexible line 84 from the diodes 83 and 83a. A white flexible line 85 and a red flexible line 86 are also provided, these lines 85,86 being diodes 87,8.
9; 90 and is connected to the input terminals 74 and 76. Fourth terminals 91, 92, 93 such as clips are connected to the lines 84, 85, 86, respectively.

When detecting the continuity of the conductor 25 of the cable 23, the inspector 28 uses the one end 26 of the cable 23.
Then, the first terminal 61 is connected to the ground conductor 24. The second terminals 65, 66, 67 are connected to arbitrary one ends 25a, 25b, 25c of the three conductors 25, respectively. Therefore, the power switch 36 of the first means 21 is turned on.

The inspector 28 also connects the third terminal 82 of the second means 22 to the ground conductor 24 at the other end 27 of the cable 23. Also, the other ends 25d of the three conductors 25,
25e and 25f are arbitrarily connected to the fourth terminals 91, 92 and 93. In this way, the continuity test is performed in the so-called current mode. As shown in Table 1, the fourth terminals 91, 92, 93 correspond to the types of sounds produced by the output terminal 77 and hence the speaker 79. For example, regarding one end 25a, 25b, 25c and the other end 25d, 25e, 25f of the conductor 25 of the cable 23, the third terminal 65 and the fourth terminal 91 are connected, as shown corresponding to FIG. The third terminal 66 and the fourth terminal 92 are connected,
Further, in the state where the third terminal 67 and the fourth terminal 93 are connected, as shown in FIG. 3, all the switches 53, 54 and 55 are conductive at the times t0 to t1, and therefore the machine gun sound is emitted from the speaker. It is generated from 79, and the next time t
At 1 to t2, the machine gun sound is stopped by the switch 53 being cut off, and therefore the fourth terminal 91 corresponding to the machine gun sound is replaced by the three fourth terminals 91, 92,
It can be determined that it is the first rank out of 93. At the times t2 to t3, the switches 53 and 54 are cut off, the sound of the sound of fire is generated, the sound of the fire engine is stopped, and thus the fourth terminal 92 corresponding to the sound of the fire engine is set to 3.
It can be determined that it is the second rank of the four fourth terminals 91, 92 and 93. After that, time t3
After that, the switch 55 is turned off, and the sound of the American sound is paused. Therefore, the fourth clip 93 corresponding to the sound of the American sound is the third of the three fourth terminals 91, 92, 93.
It can be judged that it is the second rank. Therefore, the switches 53, 54, 55 which are turned off sequentially in time
It is possible to inspect the conduction state by associating the respective third terminals 65, 66, 67 respectively corresponding to and the fourth terminals 91, 92, 93 whose temporal order is determined by the sounding sound. Like Further, for example, the third terminal 65 and the fourth terminal 92 are connected, the third terminal 66 and the fourth terminal 91 are connected, and the third terminal 67 and the fourth terminal 93.
Assuming the case of connecting with and, the sound to be generated is in the order of fire engine sound, machine gun sound, and sound of sound of amepato, which makes it possible to inspect mutual conduction states.

The present invention can be implemented not only in connection with the cables 23, 31-33, but also in a wide range of other conductors.

[0028]

As described above, according to the present invention, in conducting the continuity inspection of a plurality of conducting wires such as a multi-core shielded cable, at one end of the conducting wire, a predetermined conducting wire among those conducting wires and a residual The connection state is changed so that the conduction state changes with time, and the other end of the conduction line is in a conduction state or a cutoff state between the predetermined conduction line and each remaining conduction line. At this time, mutually identifiable acoustic signals are generated corresponding to each of the remaining conductors, and continuity between one end and the other end of each of the remaining conductors is easily identified by the continuous state of ringing of each acoustic signal. Therefore, the workability is improved, and the number of inspectors is only one, for example, and it is possible to prevent erroneous inspection of the conduction state.

[Brief description of drawings]

FIG. 1 is a diagram showing a simplified overall configuration of an embodiment of the present invention.

FIG. 2 is an electrical circuit diagram showing an electrical configuration of an embodiment of the present invention.

FIG. 3 is a waveform diagram for explaining the operation of the embodiment of the present invention.

FIG. 4 is a diagram showing a prior art.

[Explanation of symbols]

 21 1st means 22 2nd means 23,31-33 Cable 24 Grounding conductor 25 Conducting wire 25a-25c One end 25d-25f The other end 35,71 Power supply 39 Timer 61 First terminal 65-67 Second terminal 73 Oscillation circuit 79 Speaker 82 3rd terminal 91-93 4th terminal

Claims (2)

[Claims] 1. A connection state is established at one end of a plurality of conducting wires between a predetermined conducting wire of those conducting wires and each of the remaining plurality of conducting wires so that the conduction state changes with time. Altering, at the other end of the conducting wire, when in a conducting or blocking state between the predetermined conducting wire and each of the remaining conducting wires, a mutually distinguishable acoustic signal is generated corresponding to each of the remaining conducting wires, A continuity inspection method for a plurality of conductors, characterized by inspecting continuity between one end and the other end of each of the remaining conductors based on a continuous state of ringing of each acoustic signal. 2. A conductor having a first terminal connectable to a predetermined conductor among the conductors at one end of the conductors, and a second terminal connectable to each of the remaining conductors.
A first means for changing a conduction state between the first terminal and each of the second terminals while temporally different from each other, and a third means connectable to the predetermined conducting wire at the other end of the conducting wire.
A fourth connectable to the terminal and each of the remaining conductors.
Second means for generating acoustic signals that are mutually identifiable corresponding to each of the remaining conductors during a period in which the third terminal and each of the fourth terminals are in a conducting or blocking state. A multi-conductor continuity inspection device comprising: