SU1411752A1 - Device for monitoring power supply of digital computer - Google Patents

Abstract

The invention relates to the field of automation and computer technology, and is intended to detect failures and failures of the power supply of the control 1SM and peripheral devices. The aim of the invention is to increase the reliability of control by identifying a power source with single aperiodic faults. The goal is achieved by the fact that in a device containing two normalization nodes 3 and 4, groups of threshold diode elements of violation of the upper 16 and lower 17 limits, a state sensor 6 and a group of 5 registration elements 10, each of which contains an LED, into each registration element A trigger, two photodetectors, and a current-limiting resistor are introduced. The group of 5 elements registered by the optical link of the state of the diode elements 16 and 17 allows identifying the power source with deviations from the output voltage from the norm even with single aperiodic short-term faults. 2 Il. g (L

Description

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The invention relates to automation of computer technology and is intended to detect failures and failures of power sources of digital computers and peripheral devices.

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

Fig, 1 shows the block diagram of the device; figure 2 is a functional diagram of the registration element. .

The device contains buses of 1 and 2 groups of inputs, the first 3 and second 4 nodes of normalization, group 5 elements. registration, sensor 6 states, positive power supply bus 7, reference voltage bus 8, positive polarity, detection (reset) bus 9 of registration elements 10, output buses 11-14, device output signal bus 15, threshold LEDs elements 16 and 17 of the upper and lower limits of groups.

Tires 1 are designed to connect controlled negative voltages, and Tines 2 to connect positive voltages. Normalization nodes 3 and 4, built on resistors, convert all monitored voltages into close positive values. For positive voltages, the resistive divider is connected to the common power supply bus of the device, and for negative voltages to the power supply bus 7 of positive polarity.

Elements 16 and 17 are intended to determine a source whose voltage has violated permissible limits. Elements 16 define the violation. upper limit, and elements 17 - lower.

The registration elements 10 are designed to register the output optical signals of elements 16 and 17 and generate electrical signals on buses 11-14 and optical signals at the outputs of elements 10 for a digital computer and / or an operator about the power source exited "

A sensor 6 of the state, according to the output signals of elements 0, generates an interrupt signal of the computational process in the digital computer and the measurement process in the system. The system resumes operation after the device has been cleaned with a bus 9 signal and in the absence of an output signal.

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sensor 6 states. This mode improves measurement reliability.

Registration element 10 (Fig. 2) contains phono-receivers 18.1 and 18.2, a current-limiting resistor 19, trigger 20, and an LED 21. Optical links 22.1 and 22.2 photodetectors 18.1 and 18.2 perceive signals from the diode elements 16 and 17. Photo-detectors 18.1 and 18.2 together with LEDs elements 16 and 17 form two optocoupler pairs and can be implemented, for example, on the basis of an opto 15 pair of type LOT 123.

The device works in a perceptible way,

In the initial state, when all controlled voltages are normal,

20, the current through elements 16 and 17 does not flow, since the outputs of node 3 of normalization are set to a voltage slightly less than the voltage on bus 8, and the outputs of node 4 of normalization 25 are slightly higher. At the outputs of elements 16 and 17 an optical signal appears at the arrival of monitored voltages from, as a result of which current flows through them. This optical 30 signal senses the corresponding element 10, generates and remembers the signal even of a single fault in this source.

The transistor switch on the photodetectors 18.1 and 18.2 and the resistor 19 on the input optical signal produces a signal perceived by the trigger 20, the first output of which is in-. is the output of the registration element,

d0 and the second output is loaded to the LED 21. The other input of the trigger 20 is designed to clean and reset the trigger 20, provided there is no signal at the installation-input, which is

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Fo, rmula invention

A device for controlling the power supply of a digital computer containing two nodes for normalization, the groups of inputs of which are combined and are a group of inputs of a controlled voltage of the device, a group of threshold LED elements of the upper limit,

55 a group of threshold LED threshold violation elements, a state sensor, the output of which is a signal output of the device, and a group of registration elements, each

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of which includes a led, coz

anodes of threshold LED elements of violation of the upper limit of the group and cathodes of threshold LED elements of violation of the lower limit of the group are connected respectively to the output groups of the first and second nodes of normalization, characterized in that, in order to increase the reliability of the control, a trigger, a current limiting resistor and two photodetectors, the optical inputs of the first and second photodetectors i-ro (, M) of the detection element being connected to the optical output ix of the threshold, respectively LED elements violation of the upper and lower limits of groups, the cathodes of the threshold LED elements violated

The upper group limit anodes and the anodes of the threshold LED elements of the lower limit violation of the group are connected to a positive polarity reference bus; in each registration element, the trigger input is connected to the inputs of the first and second photodetectors and through a current limiting resistor with a positive polarity power bus and an anode of the LED The cathode of which is connected to the inverse output of the trigger, the reset input of which is connected to the device reset bus, and the direct output is the corresponding output the device is connected to the corresponding input of the state sensor, the outputs of the first and second photodetectors are connected to the zero power bus.

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Claims (1)

Claim A device for controlling the power supply of a computer containing two normalization nodes, the input groups of which are combined and are the group of inputs of the device’s controlled voltage, a group of threshold LED elements for breaking the upper limit, a group of threshold LED elements for violating the lower limit, the state sensor, the output of which is the signal output of the device, and a group of registration elements, each of which includes an LED, and the anodes of the threshold LED elements of violation of the upper limit of the group and cathodes of threshold LED elements of violation of the lower limit of the group are connected respectively to the output groups of the first and second normalization nodes, characterized in that, in order to increase the reliability of control, a trigger, a current-limiting resistor, and two photodetectors are introduced into each registration element, the optical inputs of the first and the second i-ro photodetectors (1 "1, M) of the recording element are connected respectively to the optical output ix of the threshold LED elements of violation of the upper and lower limits of the groups, cat odes of threshold 2θ LED elements for violation of the upper limit of the group and the anodes of threshold LED elements for violation of the lower limit of the group are connected to the reference voltage bus of positive polarity, in each recording element the trigger input is connected to the inputs of the first and second photodetectors and through a current-limiting resistor to the bus. of positive polarity and the anode of the LED, the cathode of which is connected to the inverse output of the trigger, the reset input of which is connected to the reset bus of the device, and the direct output is the corresponding output of the fault device and connected to the corresponding input of the status sensor, the outputs of the first and second photodetectors are connected to the zero bus nutrition.