JPH0547890A - Wiring pattern inspecting device - Google Patents

Abstract

PURPOSE:To prevent communication abnormality and to shorten the time to locate its cause when it occurs by simplifying cable check in the case of connecting apparatus by D-SUB connectors. CONSTITUTION:Both sides of an inspector mainframe 1 are provided with connectors 5A, 5B, which are provided with switches SWa1-SWa5, SW1-SWb15 corresponding to their respective pins. A light emitting diode 7 is provided to display continuity. Connectors 3,4 of a cable 2 to be inspected are fitted to the connectors 5A, 5B of the inspector mainframe 1, respectively. The switches SWa1-SWa15, SWb1-SW15, corresponding to respective closed pins have continuity, the light emitting diode 7 lights; if no continuity, the light emitting diode 7 does not light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring pattern inspection device in the field of communication such as FA, OA and computers.

[0002]

2. Description of the Related Art Communication between various computers or control devices as well as the FA field is becoming common.
As a physical means for realizing communication between devices, D-
At present, it is most common to use a connection cable using a SUB (day sub) connector because of its reliability and easy attachment / detachment. Incidentally, when performing RS232C communication, D
-It is common to use SUB connectors.

[0003]

Problems to be solved when using the connection cable using the D-SUB connector are as follows. Apparently, the wiring pattern cannot be confirmed. Therefore, it is difficult to find the cause when a communication error occurs due to incorrect wiring or disconnection.

Since cables having different internal wirings are the same in appearance, there is a high possibility that communication abnormality or equipment damage will occur by using different cables. Even if an attempt is made to confirm before connecting to prevent the above situation, the check is difficult for the above reason. There are various causes of communication error such as miswiring of cables and disconnection as described above, communication format, protocol error, etc.Confirmation of continuity with a tester one by one because of the difficulty as described above. It was very time-consuming.

The present invention has been provided in view of the above points, and simplifies the cable check when connecting devices with a D-SUB connector to prevent the occurrence of a communication error and seek the cause when the error occurs. The present invention provides a wiring pattern inspection device for the purpose of shortening the time.

[0006]

DISCLOSURE OF THE INVENTION The present invention is directed to a connector section to which D-SUB type connectors at both ends of the cable are fitted, a switch corresponding to each pin of the connector section, and a cable for turning on the switch. Of the wiring pattern, and a display unit for displaying if the pins of the connector are electrically connected by the output of the check circuit unit.

According to the second aspect of the present invention, a digital switch for outputting a signal corresponding to each pin of the connector section and a conversion section for outputting a signal obtained by converting the digital switch output to the check circuit section are provided. Further, according to claim 3, connector portions to which the D-SUB type connectors at both ends of the cable are respectively fitted, registration means for previously registering the wiring pattern of the cable, and wiring inputted from the connector portion. It is composed of a collating means for sequentially collating the signal of the pattern and the data of the registered pattern to check the continuity, and a display section for displaying the normality or abnormality of the continuity by the output of the collating means.

Further, in claim 4, D at both ends of the cable
-Connector parts into which SUB-type connectors are respectively fitted,
It comprises a control unit for sequentially checking which pin of the connector is connected to which pin of the connector, and a display unit for displaying a list of connection states on the screen by the output of the control unit.

[0009]

By connecting the D-SUB type connectors at both ends of the cable to the connector portions and sequentially turning on the switches corresponding to the respective pins of the connector portion, the check circuit portion is connected to the cable. The continuity of the wiring pattern is checked, and if the pins of the connector are in continuity, the display is displayed.

According to a second aspect of the present invention, a signal corresponding to each pin of the connector section is output by operating the digital switch, the output signal of the digital switch is converted by the conversion section, and the converted signal is sent to the check circuit section. Upon input, the check circuit unit checks the continuity of the wiring pattern of the cable, and if the pins of the connector are in continuity, the display unit displays.

Further, in claim 3, the wiring pattern of the cable is registered in the registration means in advance, and the signal of the wiring pattern input from the connector portion and the data of the registered pattern are sequentially collated by the collating means. A continuity check is performed, and normality / abnormality of continuity is displayed on the display unit by the output of the collating means. Furthermore, in claim 4, the control unit sequentially checks which pin of the connector each pin of the connector unit is connected to, and the display unit displays the list of connection states on the screen by the output of the control unit. I have to.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a plan view of the inspection device body 1, and FIG. 2 shows an internal circuit diagram. D on each end of cable 2
-Sub-type connectors 3 and 4 are connected, and the connectors 3 and 4 are fitted on both sides of the inspection apparatus body 1 DS.
UB type connector parts 5A and 5B are provided. still,
The number of pins of the connectors 3 and 4 is 15 pins.

Switches SWa _{1 to} SW which are toggle switches corresponding to the respective pins of the connector parts 5A and 5B.
_{a 1 5, SWb 1 ~SWb 1} 5 is provided, the other ends of the switches _{SWa 1 ~SWa 1 5, SWb 1} ~SWb 1 5 commonly connected, the power supply 6 between the common connection end, the power switch SW A series circuit of light emitting diodes 7 for conducting display is connected.

Now, the connector 3 of the cable 2 to be inspected
4 are fitted into the connector portions 5A and 5B of the inspection apparatus body 1, respectively, and the power switch SW is turned on. Then, the switch SWa ₁ to SW corresponding to each pin of the connector portion 5A, 5B
Close _{a 1 5, SWb 1 ~SWb 1} 5, if I conducting pin each other corresponding to each closed switch, the light emitting diode 7 is turned on. When it is not conducting, the light emitting diode 7 does not light up. The continuity check performing switch _{SWa 1 ~SWa 1 5, SWb 1} ~SWb 1 5 corresponding to this operation to each pin in sequence on operation. When the continuity check is completed, the power switch SW is turned off.

The switches SWa ₁ -SW shown in FIG.
The other end of _{a 1 5, SWb 1 ~SWb 1} 5 commonly connected,
A series circuit of a power source 6, a power switch SW, and a light emitting diode 7 for performing continuity display is connected between the common connection terminals to configure a check circuit unit, and the light emitting diode 7 configures a display unit. (Embodiment 2) FIGS. 3 to 6 show Embodiment 2 in which the digital switch 8 outputs signals corresponding to the connector portions 5A and 5B. Also,
A conversion unit 9 is provided which selects and converts the pin number set by the digital switch 8 and connects the selected pin number to the corresponding pin of the connector units 5A and 5B to check the continuity of the pins.

Further, the output of the conversion section 9 is input to the check circuit section 10, and the check circuit section 10 receives the connector section 5A.
It is composed of a circuit 10A connected to the side and a circuit 10B connected to the side of the connector portion 5B. Also, the circuit 10
A and 10B are provided according to the number of pins of the connector portions 5A and 5B, respectively, and light emitting diodes 11 and 12 for displaying continuity are provided respectively.

The conversion section 9 is composed of a decoder 13, selectors 14 and 15, and decoders 16 and 17. The circuit 10A is a circuit that sets only the pin number to be set to the L level, and also drives the light emitting diode 11. Further, the circuit 10B drives the light emitting diode 12.

Thus, the digital switch 8 is used to set the tens digit and the tens digit, and the code entered into the decoder 16 or 17 is determined by the numeric value of the tens digit of 0 or 1. The digit of 1s is input to the decoder 16 as it is, and the code of “1111” is input to the decoder 17.
If the tens digit is 2 or more, which decoder 16, 17
Also enters the code "1111".

When the code of "1111" is entered in the decoders 16 and 17, the outputs of the decoders 16 and 17 are all H level.
Become a level. Decoders 16 and 17 are input BCD
Depending on the code, only the output corresponding to the code is set to the L level, and the output of the selected circuit 10A is set to the L level, and at the same time, the light emitting diode 11 is turned on. Further, the output of the connector portion 5B also becomes L level via the cable, and the L level is input to the circuit 10B to turn on the light emitting diode 12. Both of these light emitting diodes 11, 1
The lighting of 2 enables the continuity check of the wiring pattern.
If it does not light up, it is a disconnection.

Next, the overall operation will be described. D-
The D-SUB connectors at both ends of the cable to be inspected are attached to the SUB type connector portions 5A and 5B. Power switch S
Turn on W, and set the pin number for confirming the continuity of the connector with the digital switch 8. Both connectors 5A, which are in continuity with the pins of the set connector 5A,
The light emitting diodes 11 and 12 corresponding to the 5B pin are turned on.

By sequentially changing the setting of the pin number by the above operation, it is possible to check which pin each pin is wired to. After the confirmation, the power switch SW is turned off and the inspection ends. (Third Embodiment) FIGS. 7 to 11 show a third embodiment. As shown in FIG. 7, a registration switch 21 for registering the wiring pattern in advance, an execution switch 22 for executing the start of the matching between the registered wiring pattern data and the actual wiring pattern, and a reset. And a switch 23.

Inside the connector portions 5A and 5B, wiring pattern setting switches 24 and 25 are arranged according to the number of pins, and light emitting diodes 26 and 27 for displaying an abnormality in the continuity check are provided respectively. It is arranged according to the number. Further, a light emitting diode 28 for displaying a normal conduction result and a light emitting diode 29 for displaying an abnormality are provided.

FIG. 8 is an internal block diagram showing a CPU 30 for controlling and a ROM 3 for registering a wiring pattern.
1, RAM 32, input ports to which signals from the switches 22 to 23 are input, data X1 to X15, and Z1 to Z1.
Input port 34 to which 5 is input, setting switches 24 and 2
5, an input port 35 to which a signal from 5 is input, an output port 36 that outputs a drive signal to the light emitting diodes 26 to 29,
It is composed of an output port 39 and the like for outputting the data Y1 to Y15.

FIG. 9 shows a circuit on the side of the connector section 5A, and a circuit 38A is provided with a circuit corresponding to the number of pins, and the data X
1, Y1 ... Figure 10 shows connector 5B
The circuit on the side is shown. Similarly, a circuit 38B is provided according to the number of pins, and data Z1 to Z15 are output. Thus,
Both ends of the cable to be inspected are attached to the D-SUB type connector parts 5A and 5B, and the power switch SW is turned on (or reset). Next, as shown in FIG. 11, the wiring pattern of the cable to be inspected is set by the wiring pattern setting switches 24 and 25, and the registration switch 21
Register by. Here, when the pin number is selected with the setting switches 24 and 25, the light emitting diodes 26 and 27 corresponding to the pin numbers are turned on, and when releasing, the setting switches 24 and 25 are pressed down again to release the light emitting diodes 26 and 27.
27 goes out.

Then, every time one wiring pattern is registered, all the wiring patterns 26 and 27 are turned off. When all the patterns are registered by repeating this registration operation, the execution start switch 22 sequentially collates the wiring pattern of the target cable with the registered wiring pattern data. When all the registered patterns match the target cable, the light emitting diode 28 is turned on to indicate that it is normal. When a mismatch occurs between the registered pattern and the target cable, the light emitting diode 29 is turned on and the light emitting diodes 26 and 27 of the registered pattern inspected at that time blink. After use, the power is turned off and the inspection ends. As described above, the wiring pattern of the target cable can be automatically checked.

The above-described operation is performed by the CPU 30, the CPU 30 constitutes a collating means, and the ROM 3
1, the RAM 32, etc. constitute the registration means. (Embodiment 4) Embodiment 4 is shown in FIGS. An execution switch 41, a display clear switch 42, an up key 43 for scrolling up and down the display, and a down key 44 are provided beside the power switch SW. A display unit 45 that displays the connection state of the pin of the cable is provided on the upper portion.

FIG. 13 shows an internal block diagram of the CPU.
46, RAM 47, ROM 48, connector portions 5A, 5B
49A, 49B and input / output ports 50-52 for input / output of the circuits 49A, 49B respectively connected to the respective pins of
Etc. Then, when the execution switch 41 is turned on to start the check, as shown in FIG. 14, the signal Y1 from the output port 50 drives the circuit 49A and the status signal of the first pin of the connector section 5A is changed. The data X1 is output, and at the same time, the connection state of the first pin of the connector portion 5B is output as data Z1 and stored in the RAM 47 or the like via the input ports 51 and 52, respectively.

Then, on the display section 45 constituted by the LCD, a list of the check contents, that is, which pin of each connector of the connector section 5A is connected is displayed. When scrolling up or down the screen of the display unit, the predetermined keys 43, 44 are pressed.
To operate. When clearing the screen, the clear key 42 is operated. Since the connector has 15 pins, the above operation is performed 15 times. The CPU 46 and RA
The control unit is configured by the M47, the ROM 48, and the like.

[0029]

As described above, according to the present invention, the connector portions to which the D-SUB type connectors at both ends of the cable are respectively fitted, the switch corresponding to each pin of the connector portion, and the cable by turning on the switch. The check circuit section for checking the continuity of the wiring pattern and the display section for displaying the output of the check circuit section if the pins of the connector are in continuity are formed.
-By connecting the SUB type connectors to the respective connector parts and sequentially turning on the switches corresponding to the respective pins of the connector parts, the check circuit part performs continuity check of the wiring pattern of the cable, and the pins of the connector are connected to each other. If it is conducted, the display is displayed on the display unit. Therefore, the wiring pattern of the cable with the D-SUB connector or the disconnection can be easily checked.
Therefore, it is easy to find the cause when a communication error occurs due to miswiring or disconnection, and it is possible to prevent damage to the equipment due to miswiring or disconnection. It has the effect of eliminating it.

Further, according to the present invention, the digital switch for outputting a signal corresponding to each pin of the connector section and the conversion section for outputting the signal obtained by converting the digital switch output to the check circuit section are provided. , The signal corresponding to each pin of the connector section is output by operating the digital switch, the output signal of this digital switch is converted by the conversion section, and the converted signal is input to the check circuit section to check circuit section. Checks the continuity of the wiring pattern of the cable, and if the pins of the connector are in continuity, the display section displays so that the wiring pattern of the cable with the D-SUB connector or the disconnection Therefore, it is easy to find the cause when communication error occurs due to miswiring or disconnection. Can be prevented, and further,
This has the effect of eliminating the hassle of using a tester for checking.

Further, according to a third aspect of the present invention, the connector parts to which the D-SUB type connectors at both ends of the cable are respectively fitted, the registration means for registering the wiring pattern of the cable in advance, and the input from the connector part. Since it is constituted by a collating means for sequentially checking the signal of the wiring pattern and the data of the registered pattern to check the continuity, and a display section for displaying the normality or abnormality of the continuity by the output of the collating means, The wiring pattern of the cable is registered in advance in the registering means, and the signal of the wiring pattern input from the connector section and the data of the registered pattern are sequentially collated by the collating means to conduct a continuity check and collate on the display section. By displaying the normality / abnormality of continuity by means output, the wiring pattern of the cable with the D-SUB connector or the disconnection check Therefore, it is easy to find the cause when a communication error occurs due to miswiring or disconnection, and it is possible to prevent damage to the equipment due to miswiring or disconnection. This has the effect of eliminating the hassle of using a tester.

Further, in claim 4, D at both ends of the cable
-Connector parts into which SUB-type connectors are respectively fitted,
The control unit consists of a control unit that sequentially checks which pins of the connector unit are connected to which pins of the connector, and a display unit that displays a list of connection states on the screen by the output of the control unit. By sequentially checking which pin of the connector each pin of the connector is connected to, and displaying the connection status on the screen by the output of the control unit on the display unit, the D-SUB It is possible to easily check the wiring pattern or disconnection of the cable with a connector, and thus it is easy to find the cause when a communication error occurs due to miswiring or disconnection. It is possible to prevent this, and further, the effect of eliminating the troublesomeness caused by using the tester for checking is obtained.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a circuit diagram of the same.

FIG. 3 is a plan view of Example 2 of the above.

FIG. 4 is a block diagram of the same.

FIG. 5 is a specific circuit diagram of the above circuit 10A.

FIG. 6 is a specific circuit diagram of the above circuit 10B.

FIG. 7 is a plan view of Example 3 of the above.

FIG. 8 is an internal block diagram of the above.

FIG. 9 is a block diagram of an essential part of the above.

FIG. 10 is a block diagram of an essential part of the above.

FIG. 11 is a flowchart showing the above operation.

FIG. 12 is a plan view of Example 4 of the above.

FIG. 13 is an internal block diagram of the above.

FIG. 14 is a flowchart showing the same operation as above.

[Explanation of symbols]

1 Inspection device main body 2 Cable 3 D-SUB type connector 4 D-SUB type connector 5A connector part 5B connector part 7 Light emitting diode SWa ₁ switch SWb ₁ switch

Claims (4)

[Claims] 1. A connector section into which D-SUB type connectors at both ends of the cable are respectively fitted, a switch corresponding to each pin of the connector section, and a continuity check of a cable wiring pattern by turning on the switch. A wiring pattern inspection device comprising a check circuit section and a display section that displays if the pins of the connector are electrically connected to each other at the output of the check circuit section. 2. A digital switch for outputting a signal corresponding to each pin of the connector section, and a conversion section for outputting a signal obtained by converting the output of the digital switch to the check circuit section. Wiring pattern inspection device. 3. A connector section into which D-SUB type connectors at both ends of the cable are fitted, registration means for registering the wiring pattern of the cable in advance, and a signal of the wiring pattern input from the connector section. And a registered pattern data are sequentially collated to perform a continuity check, and a wiring pattern inspecting device comprising a display unit for displaying normality / abnormality of continuity at the output of the collating means. 4. A connector section into which D-SUB type connectors at both ends of the cable are respectively fitted, a control section for sequentially checking which pin of the connector is connected to each pin of the connector section, and a control section. And a display section for displaying a list of connection states on the screen by the output of the wiring pattern inspection apparatus.