JPH03165277A - Inspection instrument for cable wiring - Google Patents

Abstract

PURPOSE:To increase the kinds of cable possible to be inspected by comparing data of a cable wiring made to be a reference which are stored in a storage means and data of a cable wiring to be inspected, and displaying the result of this comparison. CONSTITUTION:The cable 12 is connected to connecting terminals 14, and when an inspection signal 16 is outputted to an optional connecting terminal 14 from an inspection signal output means 18, an inspection signal 20 is inputted from the optional connecting terminal 14 by an inspection signal input means 22, then these inspection signals 16, 20 are stored by the storage means 24 as the data of wiring between these connecting terminals 14. The selection of these connecting terminals 14 is made by a control signal output means 28. Thus, the data of wiring for the cable 12 made to be the reference are stored in the storage means 24 at first, then the data of wiring for the cable to be inspected are stored and at the same time compared with the data of wiring for the cable made to be the reference by a comparison means 30, and the result of this comparison is displayed by a display means 32.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cable wiring inspection device for inspecting whether or not cable wiring used for data transmission etc. is correctly connected.

[Conventional technology]

Conventionally, in this type of device, connection terminals are specified on the output side and the input side, and the connector at one end of the cable is connected to the connection terminal on the output side, and the connector at the other end of the cable is connected to the connection terminal on the input side. was connected. Then, by outputting a test signal from the connection terminal on the output side to the cable and inputting this test signal at the connection terminal on the input side, the continuity or non-continuity of the wiring was tested. In addition, it inspects the reference cable and stores the data, then inspects the cable under test and stores the data, and compares it with the data of the reference cable to determine the quality of the cable under test. (See, for example, Japanese Patent Laid-Open No. 176868/1986).

[Problem to be solved by the invention]

By the way, in such a conventional cable wiring inspection device, the connection terminal is clearly divided into an output side for outputting a test signal and an input side for inputting a test signal, which has the following problem.

(White) Because it was not possible to inspect the continuity between the connection terminals on the input end or between the connection terminals on the output side, defective wiring could not be detected.

For example, when inspecting wiring where two connector pins of a cable are shorted in one connector and not connected to the other connector, if the two pins are not shorted, This could not be detected as a defective product.

(2) Assuming that the number of connection terminals on both sides of the cable wiring inspection device is A1 and A2 (AI≧A2), and the number of connector pins on both cables is B1 and B2 (Bl≧82), respectively, it is necessary to inspect the cable wiring. is A1≧B1 and A2≧
B2 conditions had to be met, which limited the types of cables to be tested.

For example, if the number of connection terminals on both sides of the cable wiring inspection device were 60 and 40, respectively, it was not possible to inspect cables in which the number of terminals on both connectors was 70 and 30, respectively.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cable wiring inspection device that can reliably detect any defective wiring and can increase the types of cables that can be inspected without increasing the number of connection terminals.

[Means to solve problems]

In order to achieve such an object, the cable wiring inspection device of the present invention has a large number of connection terminals that can be detachably connected to connector pins at the end of the cable and can input and output inspection signals, and the above-mentioned connection terminals to these connection terminals. A test signal output means for outputting a test signal; a test signal input means for inputting the test signal from the connection terminal; and a test signal output means for outputting the test signal from the connection terminal and the test signal input from the connection terminal. storage means for storing wiring data between connection terminals; control signal output means for outputting a selection signal for selecting the connection terminal to the test signal output means, the test signal input means and the storage means; and the storage means. The present invention is provided with a comparison means for comparing the data of the cable wiring to be inspected and the data of the cable wiring to be inspected, which are stored as a reference, and a display means for displaying the results of the comparison by the comparison means.

The connector pin for a different type of cable is detachably connected to the connecting terminal, and a connecting terminal for a different type of cable is detachably connected to a connector pin of a different type of cable that cannot be connected to the connecting terminal. The above-mentioned cable wiring inspection device was equipped with an adapter for different types of cables in which a pin and the above-mentioned different types of cable connection terminal were connected to a predetermined wiring.

[Effect]

In the cable wiring inspection device of the present invention, when the connector pin at the end of the cable is connected to the connection terminal and the inspection signal output means outputs the inspection signal to the arbitrary connection terminal, the inspection signal input means outputs the inspection signal from the arbitrary connection terminal. are input, and the storage means stores these test signals as wiring data between these connection terminals. Selection of these connection terminals is performed by M control signal output means. In this way, first, the data of the cable wiring serving as a reference is stored in the storage means, and then the data of the cable wiring to be inspected is stored and compared with the data of the cable wiring serving as the reference by the comparing means. Then, the results of comparison by this comparing means are displayed on a display means.

In addition, for dissimilar cables that cannot be connected to the connection terminal of the cable wiring inspection device, connect the dissimilar cable connector pin of the dissimilar cable adapter to the above connection terminal, and connect the dissimilar cable to the dissimilar cable connection terminal of the dissimilar cable adapter. Tested by connecting connector pins.

〔Example〕

FIG. 1 is a functional block diagram showing a cable wiring inspection device according to claim 1 of the present application.

The cable wiring inspection device 10 includes a large number of connection terminals I4 that are connected to connector bins at the ends of the cables 12 and are capable of inputting and outputting inspection signals, and inspection signal output means 18 that outputs inspection signals 16 to the connection terminals 14. The test signal input means 22 inputs the test signal 20 from the connection terminal 14, and the test signal 16 outputted to the connection terminal 14 and the test signal 20 inputted from the connection terminal 14 are used as wiring data between these connection terminals 14. and a storage means 24 for storing the connection terminal 1 as
A control signal output means 28 outputs a selection signal 26 for selecting 4 to the test signal output means 18, the test signal input means 22, and the storage means 24; It is generally composed of a comparing means 30 for comparing cable wiring data, and a display means 32 for displaying the results of comparison by the comparing means 30.

Furthermore, the storage means 24, the control signal output means 28, and the comparison means 30 are configured as a control section 34 using a microcomputer.

2 to 4 show an embodiment of the cable wiring inspection device according to claim 1 of the present application, FIG. 2 is an external view, FIG. 3 is a circuit block diagram, and FIG. 4 is a flow chart showing the operation. .

The external view shown in FIG. 2 will be explained.

On the top surface of the housing 40 of the cable wiring inspection device IO, there are a 7-segment number display LED 42 that displays the number of the connection terminal 14 with a connection failure, a good product display LED 44, a memory display LED 46, an incorrect connection display E048, and a disconnection display LED.
50, a short circuit display LED 52, an inspection start switch 54, a memory switch 56 for storing wiring data of the reference cable 12a, a buzzer 60, and inspection connectors 62 and 64 having a large number of connection terminals 14.

Further, 66 is an AC 1 connected to the side of the housing 40.
The code for 00V, 68 is its plug.

By connecting the end connectors 70.72 of the cable 12 to the test connectors 62.64, the connection terminals 14 and the connector pins 74 of the end connectors 70.72 are electrically connected.

The circuit block diagram of FIG. 3 will be explained.

The control unit 34 includes a CPU 80 and an R in which programs are stored.
It is realized by a microcomputer consisting of an OM 82, a RAM 84 for storing inspection data, and input/output interfaces 86 and 88.

The test signal output means 18 includes a decoder 90 and a decoder 90
and an NPN type transistor 92 connected to the output terminal of the transistor. Assuming that the total number of connection terminals 14 is N,
The decoder 90 has a function of decoding, for example, an 8-pin binary code input into an N line output. The transistor 92 has a base connected to the output terminal of the decoder 90, an emitter grounded, and a collector connected to the connection terminal 14. Note that the transistor 92 may be replaced with an open collector type inverter.

The test signal input means 22 includes a data selector 94 and a pull-up resistor 96.

The data selector 94 has a function of inputting data regarding the N connection terminals 14 and sending it to the control unit 34 in units of, for example, 8 bits. One end of the resistor 96 is connected to the power supply voltage Vcc.
The other end is connected to the collector of the transistor 92 via the connection terminal 14.

The display means 32 is an LED 42.44.46.48.50
．． It consists of 52 pieces.

Further, 54 is a test start switch, and 56 is a memory switch.

The operation of the cable wiring inspection device 10 will be explained based on FIGS. 2 to 4. Here, n indicates the number of the connection terminal 14, and if m takes a value from 1 to N, (n=m)
means the m-th connection terminal 14 or the m-th connection terminal 14
Represents something connected to.

First, the end connector 70 of the reference cable 12a.
72 to the test connectors 62 and 64, respectively, and then presses the memory switch 56 (step 201).

Then, from the input/output interface 88 to the connection terminal 14
(n=1) is output to the decoder 90, an H level test signal is output from the output terminal (n-1) of the decoder 90 (step 202), and the transistor 9
2 (n=1) is turned on. At this time, the decoder 90
The outputs of the other output terminals (n-2 to N) are all at L level, and the transistors 92 (n=2 to N) are off.

Therefore, from the power supply voltage Vcc to the resistor 96(n-1)
, connection terminal 14 (n=1), transistor 92 (n
A current flows to the ground via the collector-emitter of the data selector 94 (n-1), and an L level is input to the input terminal (n-1) of the data selector 94.

In addition, the connection terminal 14 is connected by wiring 9 days of the cable 12a.
(n=1) and the connection terminal 14 (n-m), the power supply voltage Vcc is connected to the resistor 96 (n=m), the connection terminal 14 (n=m), the wiring 98, and the connection terminal 14. (n
-1), a current flows to the ground via the collector-emitter of the transistor 92 (n=1), and the data selector 94
An L level is input to the input terminal (n=m) of.

Further, since no current flows from the power supply voltage Vcc into the connection terminal 14 that is not electrically connected to the connection terminal 14 (n-1), the power supply voltage Vcc, that is, the H level is applied to the input terminal (n-m) of the data selector 94. is input.

In this way, the input terminal of the data selector 94 receives the L level from the connection terminal 14 which is in conduction with the connection terminal 14 (n=1), and the L level from the connection terminal 14 which is electrically connected to the connection terminal 14 (n=1). H level is input from 14, respectively. The signals from these connection terminals 14 (n=1 to N) are read from the data selector 94 as wiring data of the cable 12a (step 203), and written to address A of the RAM 84 (step 204).

Next, 1 is added to the number n of the connection terminal 14 to be inspected (step 205), and it is determined whether this number n exceeds N (step 206). A selection signal indicating (n=2) is output to the decoder 90, and the operations from step 202 to step 206 are repeated.

In this way, the above-mentioned operation is repeated from number n-1 to number N, and if n>N at step 206, the memory display LED 46 lights up (step 207) and the wiring data of the reference cable 12a is stored. At the same time, the buzzer 60 sounds once (step 208).
)finish.

To test the cable under test 12b, remove the reference cable 12a from the cable wiring test device 10, connect the end connector 70.72 of the cable under test 12b to the test connector 62.64, and then start the test. switch 5
Press 4 (step 209).

Hereinafter, from step 210 to step 214, except for writing the data of the connection terminal 14 (n=1 to N) to address B of the RAM 84 in step 204,
Since the operations are the same as those from step 02 to step 206, the explanation will be omitted.

2, the above operation is repeated from number n-1 to number N, and if n>N in step 214, the RAM 8
Address A and address B within 4 are compared (step 215).
, it is determined whether or not the stored contents of addresses A and B are the same (step 216). If the stored contents of addresses A and B are the same, the non-defective product display LED 44 lights up (step 217). It is displayed that the cable 12b is good, and the buzzer 60 sounds once (step 208).
)finish.

Further, if it is determined in step 216 that the stored contents of address A and address B are different, the wiring contents stored in address A and the number of the undefeated connection terminal 14 are displayed on the number display LED 42 (step 21B). , and are divided into three types of defect contents (step 219).

If the number of wires stored at address A is a and the number of wires stored at address B is b, then the first defect content is a x b.
It is determined that there is a short circuit, and the short circuit display LED 52 lights up (step 220).

The second defect content is a case where a>b, a disconnection is determined, and the disconnection display LED 50 lights up (step 221).

The third defect content is a case where a=b, which is determined to be an erroneous connection, and the erroneous connection display LED 48 lights up (step 222).

In this way, it is displayed that the cable 12b is a defective product, the buzzer 60 sounds twice (step 223), and the process ends.

As explained above, in this cable wiring inspection device 10, if the total number of connection terminals is N, it is possible to inspect the wiring conditions at 2N (N-1) locations.

FIG. 5 is a functional block diagram showing a cable wiring inspection device according to claim 2 of the present application. The same parts as those of the cable wiring inspection device according to claim 1 of the present application shown in FIG. 1 are given the same numbers and their explanations will be omitted.

The cable wiring inspection device 100 has a connector bin 102 for a different type of cable that is detachably connected to the connection terminal 14, and a connector bin 106 (shown in FIG. 6) for a different type of cable 104 that cannot be connected to the connection terminal I4. The present invention includes a dissimilar cable adapter 110 which has a dissimilar cable connecting terminal 10 and a dissimilar cable connector bin 102 and a dissimilar cable connecting terminal 10 connected to predetermined wiring.

6 and 7 show an embodiment of the cable wiring inspection device according to claim 2 of the present application, FIG. 6 is an external view, and FIG. 7 is a vertical sectional view of the main part taken along the line ■-■ in FIG. be. The same parts as those of the cable wiring inspection device according to claim 1 of the present application shown in FIG. 2 are given the same numbers and their explanations will be omitted.

The lower surface 114 of the housing 112 of the adapter 110 for dissimilar cables is provided with connectors 116 and 118 for dissimilar cables having connector bins 102 for dissimilar cables, and the upper surface 120 of the housing 112 is provided with connectors 116 and 118 for dissimilar cables having connection terminals 108 for dissimilar cables. Cable inspection connector 1
22.124 are provided.

The housing 112 is assembled into a box shape using thin plates such as metal, and inside the housing 112 is a connector 11 for a different type of cable.
6. Connector pin 102 of 11B and connection terminal 10 for different cables of different cable inspection connectors 122 and 124
8 are connected to predetermined wiring by an electrical wire 128 coated with insulation.

The connector bin 102 for different cables and the connecting terminal 108 for different cables are made of a highly conductive metal or the like, and are fitted into an electrical insulator 130 such as synthetic resin. The periphery of the electrical insulator 130 is covered with a metal plate 132 for shielding.

The housing 112 is fixed to the housing 40 by connecting the different cable connectors 116 and 118 of the different cable adapter 110 to the test connectors 62 and 64, respectively. Then, by connecting the end connectors 134 and 136 of the dissimilar cable 104 to the dissimilar cable inspection connectors 122 and 124, the inspection shown in FIG. 4 can be performed.

Therefore, if the number of connector pins 106 of the end connectors 134 and 136 are B1 and B2, respectively, and the total number of connection terminals 14 is N, and if B1+82≦N is satisfied, it is possible to prevent connection with the connection terminals 14 due to differences in structure and dimensions. Even a different type of cable 104 can be inspected via the different type cable adapter 110.

〔Effect of the invention〕

According to the cable wiring inspection device of the present invention, since it is equipped with connection terminals that can input and output inspection signals, the state of the wiring at 2-(N-1) locations can be inspected, where the total number of connection terminals is N. This makes it possible to reliably detect any defective wiring and increase the types of cables that can be inspected.

Further, by using the adapter for different types of cables, any cable can be inspected as long as the total number of connector bins does not exceed the total number N of connection terminals.

[Brief explanation of the drawing]

Fig. 1 is a functional block diagram showing a cable wiring inspection device according to claim 1 of the present application, and Figs. 2 to 4 are claim 1 of the present application.
2 is an external view, FIG. 3 is a circuit block diagram, FIG. 4 is a flowchart showing the operation, and FIG. 5 is a cable wiring inspection device according to claim 2 of the present application. FIGS. 6 and 7 show an embodiment of the cable wiring inspection device of claim 2 of the present application, FIG. 6 is an external view, and FIG. 7 shows the line ■-■ in FIG. 6. It is a longitudinal cross-sectional view of the main part. 10.100... Cable wiring inspection device 12.12a
, 12b... Cable 14... Connection terminal 18... Inspection signal output means 22... Inspection signal input means 24... Storage means 28... Control signal output means 30... Comparison means 32. ...Display means 74...Cable connector bin 102...Connector pin 104 for different cables...
Different kind of cable 106...Connector bin 10B of different kind of cable...
Connection terminal 110 for different cables...adapter for different cables

Claims (2)

[Claims] (1) A large number of connection terminals that are removably connected to the connector pins at the end of the cable and capable of inputting and outputting test signals, a test signal output means that outputs the test signals to the connection terminals, and a test signal output means that outputs the test signals to the connection terminals, and a test signal input means for inputting a test signal; a storage means for storing the detection signal output to the connection terminal and the test signal input from the connection terminal as wiring data between these connection terminals; a selection signal for selecting a terminal;
control signal output means for outputting the inspection signal input means and the storage means; a comparison means for comparing data of the cable wiring to be inspected with reference cable wiring data stored in the storage means; and the comparison means A cable wiring inspection device comprising display means for displaying the results of the comparison. (2) It has a connector pin for a different type of cable that is detachably connected to the above connection terminal, and a connection terminal for a different type of cable that is detachably connected to a connector pin of a different type of cable that cannot be connected to the above connection terminal; 2. The cable wiring inspection device according to claim 1, further comprising a dissimilar cable adapter in which a connector pin and said dissimilar cable connection terminal are connected to a predetermined wiring.