SU535618A1 - Redundant contact device - Google Patents

Description

one

The invention relates to the field of designing electronic equipment and electrical equipment, in particular, to the installation of functional units containing relays, contactors and microswitches, the contacts of which must be connected by bridge redundancy schemes, and can be used in shipboard automation systems.

Bridged circuits for connecting contacts of switching elements are used to increase the reliability of switching networks 1, 2.

The closest to the invention of the technical entity is a relay-contact device containing primary and backup switching nodes, whose closing and opening contacts for increasing the usefulness of the device are connected by bridge redundancy cxeitaM 3. However, when using switching nodes with switching contacts to provide the possibility of obtaining the device on the same contacts of the switching nodes of the bridge circuit of the reserve closing or opening contacts push to the external terminals of the functional cell, in which the indicated nodes are located, all contacts of these nodes. In this case, the required contact reservation scheme is obtained by setting

jumpers between the terminals of the functional cell, which significantly complicates the installation of the device. The aim of the invention is to simplify

installation of devices when constructing bridge schemes for reserving contacts of switching nodes. This is achieved by the fact that in the proposed device, the diagonal of the bridge circuit of the redundant closing contacts is connected to the diagonal of the bridge circuit of the redundant closing contacts.

The drawing is a schematic diagram of the described device.

The device contains the switching contacts 1 and 2 of the main switching node and the switching contacts 3 and 4 of the backup switching node. Anchors switching contacts 1-4 are interconnected. The terminals of normally open fixed plates of contacts 1 and 3 are connected to terminal 5, and contacts 2 and 4 to terminal 6 of the device. The terminals of normally closed connecting plates 1 and 2 are connected to the terminal.

7, and pins 3 and 4 - with terminal 8 of the device.

The bridge circuit of the backup contact is formed between terminals 5 and 6, and the bridge circuit of backup is formed

open contacts - respectively between the terminals 7 and 8 of the device.

In the initial state, the circuit between terminals 5 and 6 is open, and between terminals 7 and 8 it is closed. When the position of the contacts on the opposite side is changed, the circuit between terminals 7 and 8 is opened, and the circuit between terminals 5 and 6 is closed. If one contact of any switching node fails, the normal operation of the device is not interrupted.

In the known device, in order to obtain such a bridge circuit of contact reservations, during installation of the device, it is necessary to install five jumpers between the respective terminals of the functional cells. In the proposed device, there is no need to install jumpers between the terminals of the cells, thereby simplifying the installation of the device.

Claims (3)

Invention Formula A redundant contact device containing bridge circuits for reserving make and break contacts of the main and backup switching nodes, characterized in that, in order to simplify installation, by reducing the number of external pins of the device, the diagonal of the bridge circuit of the reservation of closing contacts is connected to the diagonal of the bridge circuit of the backup of disconnecting contacts. Information sources, taken into account in the examination of L Nechiporenko V.I. Structural analysis and methods for constructing reliable systems. M., ed. “Owls. radio, 1968. 2. Barlow R. and Proshan F. Mathematical Reliability Theory. Mk, ed. “Owls. radio, 1969. 3. Artyukhov VL. Backup of single electromagnetic relays. The collection of the USSR State Committee for Shipbuilding “Ship Electrical Engineering and Communications, ed. “Shipbuilding, vol. 22, 1964.