JP3298342B2 - Misconnection prevention method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the specification of an external signal.
The present invention relates to an erroneous connection prevention method for easily allocating signals in accordance with the above .

[0002]

2. Description of the Related Art Conventionally, when connectors are connected to each other, a connector number and an external connector number on a board are checked while preventing incorrect connection.

However, for example, as shown in FIG. 8, there is a substrate 11 having a first connector 15 and a second connector 17 having the same number of pins, and a plurality of such substrates 11 are provided.
Is inserted into the rack 19, the wrong insertion of the external connector 13 or the operation time for inserting the external connector 13 is increased.

In designing the above-mentioned boards, especially, the parallel input / output board has a very large number of connector pins, and the output signals having different specifications are assigned to the same connector. However, it was necessary to perform pin assignment while the design time was increasing .

[0005]

[SUMMARY OF THE INVENTION Therefore, an object of the present invention reduces the working time of inserting errors and insertion of the connector is such a problem, erroneous can further shorten the design time of the signal distribution pins The purpose is to provide a connection prevention method .

[0006]

The present invention for attaining the above-mentioned object is based on the following means.

According to the first aspect of the present invention, an external signal is input / output.
And the first connection means connected to the first connection means
To prevent erroneous connection with the second connection means for inputting and outputting signals
In the erroneous connection prevention method, the communication from the first connection means is performed.
If a signal is input to the second connection means,
The specified signal specifications to the preset signal specifications.
And the first connection means and the second connection means
If connected, the connection is incorrect or
Assignment of signal to display whether connection is legitimate
Location is determined and locations other than the determined allocation location
And transmitting the classified signal to the second signal transmitting means.
Change the signal arrangement to match the signal specifications and automatically assign
It is characterized by being attached .

[0008]

[0009]

[0010]

[0011]

According to the first aspect of the present invention, a sequence different from the outside
When signals are input, these signals are set in advance.
Signals are classified as specified, and the classified signals are
Other than the location assigned for the signal indicating whether or not to continue
Change the signal arrangement to match the signal specifications
Automatically assigns, improving design efficiency and design time
Can be shortened.

[0012]

[0013]

[0014]

[0015]

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an erroneous connection prevention apparatus and an erroneous connection prevention method according to the present invention.

FIG. 1 is a block diagram for explaining the configuration of one embodiment of the present apparatus. The present apparatus has an external connector 1 as first connection means for inputting / outputting an external signal and an external connector 1 There is a board connector 2 to be connected.

The external connector 1 has an external pin 4 which is a first signal transmitting means for transmitting a signal in both directions, and the external pin 4 is erroneously or normally connected as shown in FIG. In some cases, there is a case 7 in which a hole 8 is formed to electrically insulate the LED 3, which is a display means for performing display outside, from the outside so that the display of the LED 3 can be seen.

The board connector 2 has a board-side pin 5 serving as a second signal transmitting means for transmitting a signal from the external connector 1 in two directions, and an array change for changing an array of signals from the board-side pin 5. There is a programmable logic device (hereinafter referred to as PLD) 6 as a means.

The above-described apparatus operates as follows.

When a current is supplied to the LED 3 by the display power supply in the control device and the external connector 1 is connected to the board connector 2, the current supplied to the LED 3 is changed to the third pin 5 of the board side pin 5. When the photocoupler 11 connected to is turned on, it flows through the LED 3 to turn on the LED 3. The external signal is supplied to the external side pin 4 and the external side.
The light is transmitted to the photocoupler 11 via the board-side pin 5 connected to the pin 4 . The transmitted signal is a signal that is insulated by the photocoupler 11 and is replaced by an in-substrate power supply. And this replaced signal is PL
By D6, the signal arrangement is changed to a signal arrangement conforming to the specification of the signal in the board.

Here, the PLD 6 is generally available on the market. After forming a logic circuit with a dedicated tool, the PLD 6 is converted into a fuse map.
It operates as a logic circuit configured by writing to LD6.

In this method, the parameters used for the calculation are I = m = n = p =
Initialized as 1 (S1), the output specifications such as signal names and voltages are classified for each signal in the order of input of the board number I and the connector number m as shown in the table shown in FIG. For example, if there is an output specification that does not exist in the first connector 15, the same processing is repeated for the second connector 17. That is, the output specification of the brake release and the like in FIG. 5 is H3, and when the output of the first connector 15 does not have the specification of H3, the process shifts to the second connector 17 (S2).
The confirmation LED signal is assigned to the pin number n excluding the common pin (S3). Then, signal names suitable for the PLD program are sequentially allocated as shown in the table of FIG. 6 in accordance with the specification of the pins that can be allocated other than the pin number n (S4), and the allocation is determined for each connector. The connection on the substrate is determined on the basis of
An LD program is created (S5). M = m + 1, n = n + to shift processing to the next pin and connector
1, p = p + 1 is calculated (S6). If the pin with the pin number n is unused or grounded (S7), the operation proceeds to the processing of the next pin with n = n + 1. Is performed (S8). When the number of connectors p on the board is the maximum value (S9), the number of connectors p on the board is set to p = 1 (S10). If the substrate number I is not the maximum value (S11), the processing is shifted to the next substrate with I = I + 1 (S12), and if the substrate number I is the maximum value (S1).
1), end the process.

As described above, in this apparatus, the LED is turned on only when the appropriate connectors are properly connected to each other. Therefore, in the present apparatus, the LED does not light up when the connection is incorrectly made, so that it is possible to reduce the mistaken insertion of the connector and the work time for the insertion. Further, according to the present method, a pin arrangement table is created in accordance with the signal output specification, and this pin arrangement table is used for the PLD program. Therefore, the design time of signal pin arrangement can be reduced.

[0025]

As described above, the erroneous connection prevention device and the erroneous connection prevention method of the present invention have the following effects.

The method for preventing erroneous connection according to the present invention employs an external communication method.
Signals according to the output specifications of the signal.
Signal is assigned for a signal to indicate whether or not there is a misconnection.
Signals that match the signal specifications
The layout is automatically changed and assigned.
Design time can be shortened.

[0027]

[0028]

[0029]

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an erroneous connection prevention device according to an embodiment of the present invention.

FIG. 2 is an external view of an external connector of the incorrect connection prevention device according to one embodiment of the present invention.

FIG. 3 is a flowchart illustrating a method for preventing an erroneous connection according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating a method for preventing an erroneous connection according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating a classification according to an output specification of an erroneous connection prevention method according to an embodiment of the present invention.

FIG. 6 is a diagram for explaining signal assignment in the erroneous connection prevention method according to one embodiment of the present invention;

FIG. 7 is a PLD of an erroneous connection prevention method according to an embodiment of the present invention;
3 is a diagram for describing an example of the program of FIG.

FIG. 8 is an external view for explaining connection of a conventional connector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... External connector, 2 ... Board connector, 3 ... LED, 4
... external pins, 5 ... board pins, 6 ... PLD, 7 ... case, 8 ... holes.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/64 H01R 43/00

Claims (1)

(57) [Claims] 1. A first connection terminal for inputting / outputting an external signal.
A stage connected to the stage and the first connection means for inputting / outputting a signal;
2 Misconnection prevention method for preventing misconnection with connection means
, A signal from the first connection means is input to the second connection means
If this is the case, the specifications of the input signal
If the first connection means and the second connection means are connected,
If the connection is incorrect or legitimate,
Determine where to assign signals to indicate if there is
In addition, the classification
The received signal in accordance with the specifications of the signal in the second signal transmitting means.
Change to the assigned signal arrangement and automatically assign
Characteristic misconnection prevention method.