JPH04145512A - System for detecting wrong insertion of connector - Google Patents

Abstract

PURPOSE:To easily detect in a short time wrong connecting caused by the wrong insertion of a connector by transferring the connector addresses of both connectors to a diagnostic processor, and comparing the addresses with connecting information stored in a memory. CONSTITUTION:A diagnostic processor D issues a command from an MPU 21 and loads a connector address 'A0' stored in the address register 5 of a card A in a shift register 9. This information is shifted to the section (a) of the shift register 11 of a card B through the diagnostic pins of connectors 1 and 3. Then the processor D issues a command to the card B from the MPU 21 and loads a connector address 'B0' stored in an address register 7 in the section (b) of the shift register 11. Then the contents of the sections (a) and (b) of the register 11 are transferred to the processor D and compared with connecting information stored in a memory 22. Therefore, the connected state of a connecting cord with connectors can be easily confirmed in a short time.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for detecting incorrect connector insertion, and in particular to a method for detecting incorrect connector insertion in a connecting cord with a connector that connects cards built into electronic devices in a short time. Concerning connector incorrect insertion detection method.

[Conventional technology]

In electronic devices, connecting cords with connectors attached to both ends are often used for signal transmission between cards with components mounted on printed circuit boards or the like. When a plurality of such connector-equipped connection cords are used, there is a possibility that one connector is erroneously inserted into a place where another connector-equipped connection cord should be connected, resulting in incorrect connector insertion. Conventionally, as a countermeasure to prevent such incorrect connection due to incorrect connection insertion, there were no measures other than putting matching marks on the connector part and asking the operator to be careful when making connections.
No special confirmation measures were taken.

[Problem to be solved by the invention]

In the conventional method described above, there is no special means for detecting this type of incorrect connection of a connector-equipped connection cord, so if the device does not operate normally due to incorrect connector insertion, it is assumed that the malfunction is due to incorrect connector insertion. The disadvantage is that it takes a long time to determine that the connection is incorrect.

An object of the present invention is to provide a connector erroneous insertion detection method that allows the connection state of a connector-equipped connection cord to be easily confirmed in a short time when the device is started up.

[Means to solve the problem]

The connector erroneous insertion detection method of the present invention uses one connecting pin at a predetermined position of a connector to which a connecting cord with a connector is connected as a diagnostic pin, and an address register storing a connector address assigned to each connector and the diagnostic pin. A shift register is connected between the pin and the connector address of one connector connected by the connector-equipped connection cord is converted into serial data by the shift register, and the data is sent to the shift register of the other connector via the diagnostic pin. and transmits the transferred connector address of the one connector along with the connector address of the other connector to the diagnostic processor, and connects the two connectors when the connection is normal, which is stored in the memory of the diagnostic processor as connection information in advance. The connector address pair is compared with the connector address pair of the connector in order to detect incorrect connector insertion.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram illustrating one embodiment of the present invention.

Cards A and B are each equipped with two connectors 1.2 and 3.4 for signal transmission using connection cords with connectors. Connector addresses "AO", "AIJ and rB" correspond to each connector 1 to 4.
Address registers 5.6 and 7 storing o, rBl,
．． 8 and shift registers 9.10 and 11.12 are provided. Of these, shift registers 11 and 12 are a
.

It is divided into three parts b. Further, the I10 device C is provided with a connector 17, an address register 15 storing a connector address "CO", and a shift register 16 divided into three parts a and b.

FIG. 2 is an explanatory diagram showing the configuration of the connection pins of each connector, which is composed of eight signal pins and one diagnostic pin. The connector 1 of the card A and the connector 3 of the card B, and the connector 4 of the card B and the connector 17 of the [10 device C] are connected by a connecting cord 18 with a connector attached to both ends.

Cards A and B are each connected to a diagnostic processor D via a diagnostic bus 2o, and a control unit 13.14 controls address registers 5 to 8 and shift registers 9 to 12 according to instructions from the diagnostic processor D. It is configured. The diagnostic processor D includes an MPU 21 and a memory 22, which control the control unit 13.14 and compare and judge the transferred data. The connector addresses of the connector pairs are stored in the format shown in FIG.

Next, the operation will be explained with reference to FIG.

First, the operation for diagnosing the connection state between card A and card B will be described.

Diagnostic processor D is used for initial diagnosis at system startup.
sends a command from the MPLI 21 and reads the connector address rAO stored in the address register 5 of card A.
Load J into shift register 9. This information is transmitted to card B's shift register 11 as serial data via the diagnostic pins of connectors 1 and 3 using the tarok signal.
Department. Next, the diagnostic processor D
1 to card B, address register 7
Connector address rBo stored in .

is loaded into part b of the shift register 11. Subsequently, the contents of sections a and b of the shift register 11 are transferred to the diagnostic processor D via the diagnostic bus 20 and compared with the connection information stored in the memory 22.

If the two match, it is determined that the connection is normal, and if they do not match, it can be determined that there is an incorrect connection.This can be displayed on a control panel or the like to easily notify the operator of the incorrect connection.

Next, the operation for diagnosing the connection state between the connector 4 of the card B and the connector 17 of the I10 device C will be described. First, the connector address "B1" stored in the address register 8 of the connector 4 is loaded into the b section of the shift register 12. At the same time, the connector address rcOJ stored in the address register 15 of the I10 device C is loaded into the a section of the shift register 16. Here, Kuro
- The contents of part a of the shift register 16 are shifted to part b by the I signal, and the contents of part b of the shift register 12 are shifted to part a of the shift register 16 of the I10 device C through the diagnostic pin. Next, the contents of portions a and b of the shift register 16 are shifted into the shift register 12 through the diagnostic pin again. The contents of portions a and b of the shift register 12 are then transferred to the diagnostic 10 sensor D via the diagnostic bus 20 and compared with the connection information stored in the memory 22.
If the connector is inserted incorrectly, it will be detected.

〔Effect of the invention〕

As explained in detail above, the present invention provides one diagnostic pin in the connector, sends the connector address determined for each connector from one connector to the other connector via the shift register, and connects both connectors. By transferring the connector addresses together to the diagnostic processor and comparing them with the connection information stored in the memory, it is possible to easily detect erroneous connections due to incorrect connector insertion in a short time.

[Brief explanation of drawings]

Figure 1 shows a block section and a second
The figure is an explanatory diagram showing the configuration of connection pins of the connector, and FIG. 3 is an explanatory diagram showing the configuration of a memory in which connection information is recorded. 1~4,17------connector, 5~8.15---
---Address register, 9 to 12.16...
・Shift register, 13.14...control unit, 18
．． 19-... Connection cord with connector, 20...
-...Diagnostic bus, 21...MPU, 22...-
...Memory, A, B...Card, C...
...I10 device, D....--Diagnostic processor.

Claims (1)

[Claims] One connection pin at a predetermined position of the connector to which the connector-equipped connection cord is connected is used as a diagnostic pin, and a shift register is connected between the diagnostic pin and an address register storing a connector address assigned to each connector, The connector address of one connector connected by the connector-equipped connection cord is converted into serial data by the shift register and transferred to the shift register of the other connector via the diagnostic pin, and the transferred one connector The connector address of the connector is transferred to the diagnostic processor along with the connector address of the other connector, and compared with the connector address pair of the two connectors that are connected during normal connection, which is stored in advance as connection information in the memory of the diagnostic processor. A connector erroneous insertion detection method characterized by detecting erroneous connector insertion.