SU723577A1 - Redundancy pulse generator - Google Patents

Description

The invention relates to automation and computing and can be used in the construction of highly reliable generators for powering clock pulses of multichannel redundant systems. A redundant generator is known that contains a series-connected primary generator, an additional generator, a trigger, an AND element, another input of which is connected to the output of a backup generator, an integrator, a subtraction element, and an OR element, the second input of which is connected to the output of the AND element connected by another input the second trigger input and the output of the main generator 1, the disadvantage of which is complexity. Closest to this is a redundant pulse generator containing a multistable trigger, in which the turns are connected to the corresponding inputs of the AND-OR-NOT elements, and the inputs through the control elements with the inputs of the corresponding generators connected to one of the inputs of the AND-OR-2 elements The drawback of the device is large redundant equipment, since for monitoring the performance of redundant generators, N elements, control, are used. The purpose of the invention is to simplify the device. The goal is achieved by the fact that in a redundant pulse generator, which contains a control unit and backup pulse generators, the outputs are connected to the same inputs of the AND-OR-HED outputs, the other inputs of which are connected to the corresponding shift register outputs, output the control unit is connected to the shift input of the shift register, and the input is connected to one output of a redundant pulse generator, to the control input of which the setup input of the shift register is connected. The drawing shows the block diagram of the generator. The device contains backup generators; pulses 1-3, control unit 4, -discharge -5-7 shift register 8 and elements, and-or-cr. 9-11. The device works as follows. After turning on the power to the setup input of the register 8 is supplied

The signal that establishes a single potential at the output of the first bit 5, and zero at the outputs of the second b and third bit 7 of the register 8, is zero. As a result, the clock pulses of the generator 1, which are fed to the outputs of the device and to the input of block 4, will pass through the elements AND-OR-NOT 9, 10, 11.

When the generator 1 fails, the pulses at the outputs of the device and at the input of block 4, penetrate the output of the signal to the shift input of the register 8, according to which the output of the first digit 5 of the register 8 is set to zero and the output of the second digit 6 - single potential. Through the elements AND-OR-NOT 9-11 will begin to pass the pulses of the generator 2.

If a generator fails, 2 devices are switched in the same way.

The proposed backup system and generators, with a significant reduction in equipment relative to the known technical solution, will continue to issue a sequence of clock outputs.

pulses in case of failure of all reserved generators, except one.

Claims (2)

1. USSR author's certificate number 579620, cl. G About F 11/00, 1975. 2. Authors certificate of the USSR 5 488209, cl. G On F 11/00, 1974 (prototype).