RU2001412C1 - Check-up method for electrical connectors - Google Patents

Abstract

The invention may find application for monitoring connectors used in supercomputers, multi-machine computing systems, personal computers, and communications equipment. The method includes supplying an electric signal through the communication line to the connector, external influence on the connector and monitoring during the action of the parameters of the electrical resistance of the connector in the state of short circuit and open circuit, while continuously monitoring the active, capacitive and inductive components of the electrical resistance of the connector record the presence simultaneous abrupt changes in these components from values corresponding to the states of short circuit or break to intermediate the values corresponding to the state of failure, in the presence of the indicated changes in the components of the electrical resistance, are considered unsuitable. The method has an increased reliability of control of 2 ZPF-LYL.2IL.

Description

The invention relates to measurement technology and can be used for monitoring connectors used in supercomputers, multi-machine computing systems, personal computers, and communication equipment.

A known method for monitoring electrical connectors is according to which the electrical resistance of closed and radically closed contacts is measured.

The disadvantage of this method lies in its functional limitation, which does not allow the monitoring of connectors that are in extreme conditions, i.e. at the border of a stable operational state.

Closest to the technical nature of the invention is a method for monitoring electrical connectors, comprising supplying an electrical signal externally through a communication line to the connector; impact on the connector and control, the process of exposure to the parameters of the electrical resistance of the connector in the state of short circuit and break.

The disadvantage of this method is the low reliability of the control vn connectors due to the inability to control the connectors in the intermediate state or failure mode

The purpose of the invention is to increase the reliability of connector control.

The goal is achieved by the fact that in the method for monitoring electrical connectors, including applying an electrical signal through a communication line to the connector, external impact on the connector and monitoring during the action of the electrical resistance parameters of the E state connectors short circuit and open circuit they monitor the active, capacitive and inductive components of the electrical resistance of the connector, register the presence of simultaneous abrupt changes in these components from values corresponding to the state of the connector, a short circuit or an open circuit, to intermediate values corresponding to the state of the connector, failure, in the presence of the indicated changes in the components of the electrical resistance, make the connector unsuitable.

In addition, the external action on the connector is carried out in the form of mechanical reciprocating infrared-low-frequency oscillations of the components that are often connected together relative to each other, and therefore the oscillation amplitude is determined by

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poured within the course of the contacts of the electrical circuit of the connector.

In addition, an electrical signal is supplied to the connector in the form of a pulse sequence, the duty cycle Q of which satisfies the ratio Q 2.

Continuous monitoring of the active, capacitive, and inductive components of the electrical resistance makes it possible to record intermediate simultaneous spasmodic changes in these components during external (mechanical, chemical, temperature, etc.) actions.

In addition, the use of mechanical stresses on the connector in the form of reciprocating vibrations within the contact path of the electrical circuit of the connector in the infra-low frequency range of the component parts of the connector (plug-socket) relative to each other allows to increase the reliability of rejection of connectors at the input control stage .

In addition, applying an electrical signal to the connector in the form of a pulse train with a duty cycle of Q 2 allows us to detect a failed state of the connector due to the prevailing value of the capacitive component of the equivalent reactance of the connector over the inductive one and to reject connectors with a failed state at various stages of their operation.

In FIG. Figure 1 shows equivalent circuitry for connectors in case of short circuit (SC), open circuit, and failure: Fig. 2 shows the known and proposed methods for monitoring connectors by active (ohmic) and total (active and reactive) resistances.

The control method is illustrated by the representation of equivalent circuits when a pulse sequence arrives at the input of the connector (Fig. 1a) when the components of the connector are short-circuited (in Fig. 16 to the right), which corresponds to the on state of the connector; here, the value of the active ohmic resistance R is monitored. which should be less than the nominal allowable (Nnom) when the connector is in good condition. In FIG. 1c shows the connector in the on or break state when the ohmic resistance between its contacts is infinity, which corresponds to the opening of the contacts of the connector between each other (on the right in FIG. 1c). FIG. 1, the connector is shown to fail, when the arrival of impups to the connector corresponds to the fault state at time ti t ti + 1, where 1-0 or even, and their absence at time ti t ti-m. where I is odd, the state corresponds to a break (Fig. 1d - bottom right).

In FIG. 2e shows a known method for monitoring connectors, when the connector is checked for compliance with the parameter R in the short circuit state and an open. The considered short-circuit conditions and breakage of the connector and their transition from one to another can be achieved both by the state of its contacts, the state of the environment in which the connector operates, and the possible movement of the contacts of the connector relative to each other. In FIG. 2a, the control of the connector during the reciprocating movement of the contacts relative to each other is considered, as is the case in real equipment. In this case, sections 1-2, 4-5 correspond to the on state of contacts (SC), and sections 2-3.3-4 correspond to the off state of contacts (open). In FIG. 26, a method for controlling connectors with respect to ohmic (position 1) and reactive (position 2) components is described. In addition to short-circuit and open sections, which are characterized by both the active (ohmic) component R (as in the known method) and the reactive (inductive) component L,

a fault section is introduced. The fault section is characterized by a final value of active resistance exceeding at least two times the nominal value, as well as a stepwise change in the reactive component from + to -. which is equivalent to a change in its nature and corresponds to a spasmodic appearance of the final value of capacitance C in the total resistance of the connector.

Thus, the control method according to this invention is more sensitive to changes in the parameters of the mediators. Application of the method allows not only to predict and record the fact of connector failure, but also to anticipate the possibility of failure in advance, which makes it possible to prevent the failure of a complex system (for example, a multi-machine computer complex or high-performance computer system) in advance.

(56) USSR Copyright Certificate Nfe 1597791, cl. G 01 R 31/02, 1990, Low voltage rectangular connectors, type RPPM27.

Specifications ГЕ0.364 234 ТУ, 1987, p. eighteen.

Claims (3)

1. METHOD FOR CONTROL OF ELECTRICAL CONNECTORS, including supplying an electrical signal through a communication line to the connector, external influence on the connector and control during the action of the electrical resistance parameters of the connector in the state of short circuit and open circuit, characterized in that, in order to increase the reliability of the control , continuously monitor the active, capacitive and inductive components of the electrical resistance of the connector, detect the presence of simultaneous jump-like changes in these components respectively having the values corresponding to the state msoedinitel short or open circuit, to the intermediate value m corresponding to the state of the failure of the connector, the presence of these constituents changes the electric resistance related to the T connector unusable. 2. The method according to claim 1, characterized in that the external impact on the connector carried out in the form of mechanical reciprocating infra-frequency oscillations of the component parts of the connector relative to each other, while the oscillation amplitude is set within the limits of the contact path of the connector electrical circuit. 3. The method according to claim 1, characterized in that the electrical connector a signal in the form of a pulse sequence, the duty cycle Q of which satisfies the relation Q 2. ) j Vtgt-t-g-7 i i i t r I. I I Г I I t I I I I I I 41 //4 ///, f /, -   / / J / / x / X /. "U  K $  / e  / ",„ sfig. 2. Y //; //// y / 777777) fjj R Jb ti . / ofPbg xs -H Yu