JPS62123516A - Detecting circuit for mispackage of cable - Google Patents

Abstract

PURPOSE:To easily detect the unpackage, removal and mispackage of cables by connecting a pair of packaging housings to each other with plural cables and turning on a light emitting element in case both or either one of both cables is not packaged. CONSTITUTION:Connectors 11/12 and 21/22 containing 10 pieces of signal pins respectively are packaged in a pair of packages 10 and 20. The signal pins 30-39 and 40-49 and those signal pins of connectors 21 and 22 are connected with each other. Then the signal pins 30 and 41 of connectors 11 and 12 are earthed and set at level zero. While the signal pins 50 and 61 of connectors 21 and 22 receive supply of level 1 and are connected to a power supply to be supplied to an OR circuit 25. The circuit 25 is turned off as long as both cables 13 and 14 are packaged normally. Thus a transistor 27 is also turned off and a light emitting diode 28 emits no light. The circuit 25 is turned on if both or one of both cables 13 and 14 is not packaged. Thus the transistor 27 is also turned on and the diode 28 emits the light to detect the unpackage, removal, etc., of the cables.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cable mounting error detection circuit, and in particular to a circuit for connecting units, chassis, packages, etc., using a plurality of cables each containing a plurality of signal lines. The present invention relates to a cable mounting error detection circuit in a device for detecting cable mounting errors.

[Conventional technology]

Conventionally, in this type of device, a means as shown in FIG. 2 has been used to detect whether a cable is not installed or if the cable is disconnected.

In FIG. 2, the conventional embodiment includes package 10 and package 20t-cable 13 and cable 14.
They are interconnected devices. Package 1017C
Two connectors 11 and 12 each having 10 signal pins are mounted. 1 for each package 20
Two connectors 21 and 22 with 0 signal pins are mounted.

Is cable 13 10 signal lines? Signal pins 30 to 39 of connector 11 and signal pins 50 to 5 of connector 21
9 corresponding signal pickets r are interconnected. The cable 14 has ten signal lines and interconnects the corresponding signal pins 40 to 49 of the connector 12 and the corresponding signal pins 60 to 69 of the connector 22. In the package 10, the signal pin 30 of the connector 11 and the signal pin 40 of the connector 12 are at ground potential (logic level r
OJ) VC clamped. In the package 20, the signal pin 50 of the connector 21 is connected to the connector 22.
The signal pins 60 of both are connected via a resistor FLef to a power source Ve that supplies a logic level "1", and both are connected to the input of an OR circuit 25. OR circuit 25
The output is input from the power supply Vb of the detection circuit 26 to the base of a biased NFC transistor 27 via a resistor Rbr. The emitter of transistor 27 is at ground potential V
cb collector is connected to power supply Vc via resistor Re and light emitting diode 28.

In the state where the cables 13 and 14 are normally mounted as shown above, the inputs of the OR circuit 25 are both turned on. For example, if the transistor 27 is on and the cable 14 is installed by mistake in the conventional embodiment described above, for example, the connector 11 and the connector 22 are connected to the cable 13. Connector 12
In the case where the connector 21 is connected to the cable 14, the logic level "O" explained above is input to the OR circuit 25 through a different route than the original route, so it is not possible to detect incorrect installation of the cable. There was.

Means for Solving the L Problem] The cable mounting error detection circuit of the present invention uses r first to rth connectors of the same specification each having n signal pins (first to nth). Does it contain electrical parts? A pair of mounting casings consisting of a unit, chassis, package, etc. to be mounted, and a first mounting casing and a second mounting casing of the pair, respectively.
L7'c A connector that fits into the above connector is attached to both ends of the connector, n signal wires are built in, and r cables and metal are provided.
The r cables VC1 are configured by mutually connecting connectors with the same number and signal pins with the same number between the pair of first and second mounting cases. In the device, for each connector mounted in the first mounting case, a first signal pin of the first connector, a second signal pin other than the first signal pin of the second connector... ...and sr connector! 1st to th (r
-1) rth signal pin other than the signal pin? , a first signal pin of the first connector, and a first signal pin of the second connector for each connector mounted in the second mounting case. 2nd signal pin other than... and the first signal pin of the rth connector
A means for connecting signal pins other than the (r-1)th signal pin to a power source that supplies logic level "1" via a resistor, and each connector mounted in the second mounting case. An OR circuit that ORs all of the output lines for extracting the signal pins, and a detection circuit that is connected to the OR circuit and has a light emitting diode at its output? We are prepared.

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

Is Fig. 1 an embodiment of the present invention? FIG. In FIG. 1, a simple embodiment of the present invention is a device in which a package 10 and a package 2 (l cables 13 and 14) are connected to each other. Connectors 11 and 12
has been implemented. Two connectors 21 and 22 each having ten signal pins are mounted on the package 20. The cable 13 has ten signals ik, and connects corresponding signal pins 30 to 39 of the connector 11 and signal pins 50 to 59 of the connector 21 to each other. Cable 14 has 10 signal lines and connector 1
2 signal pins 40 to 49 and connector 22 signal pin 60
~69 corresponding signal pins are all interconnected.

In the package 10, the signal pin 30 of the connector 11 and the signal pin 41 of the connector 12 are flagged to ground potential (logic level rob).

In package 20iC, signal pin 5 of connector 21
The signal pins 61 of the 0-coupled connector 22 are both connected to the logic level "1" voltage supply through the power supply Ve and the VC resistor Ref, and are connected to the input of the OR circuit 25. . The output of the OR circuit 25 is input from the power supply vb of the detection circuit 26 to the base of the bias filter transistor 27 via the resistor Rb7. transistor 2
The emitter of 7 is connected to the ground potential, and the collector is connected to the power supply Vc via a resistor Rc and a light emitting diode 28.

When cables 13 and 14 are properly mounted as shown above, the inputs of OR circuit 25 are both input to cables 13 and/or 14. When cables 13 and/or 14 are not mounted, OR circuit 25 is connected to Cable? If you erroneously mount the cable 13 and connect the connector 11 and the connector 22 together, and then connect the connector 12 and the connector 21 with the cable 14, the signal pin 50 will be the store name pin 40, and the signal pin 61 will be the signal pin. It will be connected to 31. If this signal pin 31 or signal pin 40 is not connected to an electrical component etc. inside the package 10 (if it is a vacant pin) or if it is used for an input signal, the signal pin 50 connected to it Alternatively, the power source Ve (logic level "1") is supplied to the resistor 61 via the resistor Re, the transistor 27 is turned on via the OR circuit 25, the light emitting diode 28 emits light, and false metal can be detected. - When the signal pin 31 and the signal pin 40 are used for output signals inside the package 1, if the output signal is at logic level "0", is the light emitting device similar to the above? When operated, the logic level of the output signal changes between "0" and "1", and when the logic level is at the predetermined logic level rOJ, the light emitting diode 28 emits light and it is possible to detect whether or not the cable is stuck.

[Effects of the Invention] As explained above, the present invention provides a method for connecting a pair of units, chassis, packages, etc. with a plurality of cables.
Here, any 1 borrowed pin of the -1 connector? Earth potential II' (connected and correspondingly connected by a cable 1 to the same signal pin area of another connector 1) having means for receiving said earth potential when the cable is mounted Each of the connectors that are connected to each other by the cables of In addition to being able to detect trespassing, erroneous cable tension can also be easily detected.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram of a conventional embodiment. 10.20...Package, 11.12.21
゜22・・・・・・Connector, 13.14・・・・・・
Cable, 25...OR circuit, 26...
・Detection circuit, 27...Transistor, 28...
...Light emitting diode, 30~39°40~49.5
0~59.60~69...Signal pin, Vb,
Vc, Ve --------[source, Rb, Rc, R
e -------Resistance. A kiln. Agent Patent Attorney Susumu Uchihara S. / Illustration

Claims (1)

[Claims] A pair of mounting casings consisting of units, chassis, packages, etc., in which electrical components, etc. are mounted, including r-th connectors of the same specification, having n signal pins, and a pair of these mounting cases. r cables each having a built-in n signal wire and having a connector fitted to each of the connectors mounted on each of the first mounting casing and the second mounting casing; The first cable of the pair
In the device configured by interconnecting connectors with the same number and signal pins with the same number between the mounting casing and the second mounting casing, For each connector, the first signal pin of the first connector, the second signal pin other than the first signal pin of the second connector
and means for clamping the r-th signal pins other than the first to (r-1) signal pins of the r-th connector to logic level "0", respectively; For each connector mounted in the second mounting case, the first signal pin of the first connector, the second signal pin other than the 10th signal pin of the second connector, and the r-th means for connecting an r-th signal pin other than the first to (r-1) signal pins of the connector to a power supply that supplies a logic level "1" via a resistor; and the second mounting casing. and a detection circuit that is connected to the OR circuit and has a light emitting diode at its output. Features a cable mounting error detection circuit.