SU137565A1 - Tracking system with automatically activated backup channel - Google Patents

Description

Known tracking systems with a backup channel provide automatic transition to the backup channel in the event of a primary failure. Such systems do not provide monitoring of the health of both channels directly during operation.

In the proposed tracking system, a position switch is used, which is connected to the charging shaft or the mining shaft and ensures that the working channel is switched to the standby mode, and the backup switch

to working mode when the system switches from one work area to another. This allows you to monitor the health of both channels directly in the process.

 The tracking system consists of two channels / and 2 (see drawing), each of which contains a sensor 3, an element of comparison 4, a receiver 5 connected via a differential to an executive motor 6, devices 7 and 8 for adjusting the gain, and an amplifier 9 The value to be worked out (angle of rotation, velocity head or other physical quantity), divided into two sections, converted by dual sensor 3 into a na-tion, and fed to the reference element 4. Here, too, the voltage J connected through the differential is fed to the joint. with spolnitelnym dvigatele.m 6 difference of these voltages is a voltage guide Chpravlenich cheoe device 7, lowering the gain of the channel or through the device 5, the reducing step input of amplifier 9 is supplied to the gain.

Switching channels from testing to reserve and vice versa, as well as selecting the main and backup channels, the manufacturer using the position switch 10, ensuring the operation of amplification of channel 9, which should perform testing with maximum gain, and simultaneously suppressing the gain of the channel located

in position The position switch 10 is mechanically connected to the shaft of the charging or mining operation. The operation of the system is monitored by the measuring unit 11.

At the beginning of operation, the position switch 10 is in such a position that the gain of the first channel is greater than that of the SECOND-THEREFORE if a mismatch occurs between sensors 3 and receivers 5 of both channels, the first channel comes into operation before the second and works out the error. With very large discontinuous mismatches, the backup channel also enters. When switching to channel 2, switch 10 turns off device 9 of channel 2 and turns on device 9 of channel 1, as a result of which the channel gain factor / decreases and channel 2 increases. With a good system, either the measuring unit 11 of the same channel or the measuring units of both channels are triggered, and in the event of a fault, only the measuring unit of channel 2 is triggered. In the event of a channel failure, it is turned off and channel 2 is automatically switched on and vice versa. After an emergency shutdown of one of the channels, the second channel in the whole range works with a high gain.

A tracking system with an automatically activated backup channel, consisting of two systems, each of which contains a sensor, a receiver, a measuring unit, an amplifier and an actuating motor, connected to the receiver through a differential, characterized in that, in order to monitor the health of both channels, directly in the process of work, it uses a position switch connected to the charging shaft or the mining shaft and ensuring that the working channel is switched to the backup mode, and the backup switch to the working channel mode and the transition system from one

Uchagka work on the other.