KR910010265A - System monitoring board - Google Patents

Abstract

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Description

System monitoring board

As this is a public information case, the full text was not included.

1 is a block diagram of a system monitoring board according to the present invention.

2 is a sequence diagram of a system monitoring board according to the present invention.

3 is a circuit diagram of a failure display module of a system monitoring board according to the present invention;

Claims (11)

In the system monitoring panel for monitoring the occurrence of a failure of the system, when a failure occurs from a predetermined monitoring point of the system, it is received and outputs a failure occurrence signal until a fixed reception confirmation signal is input, and at the same time, a high-speed blinking failure indication is displayed. At least one or more display unit maintains a fault reception display such as a continuous light until a fault recovery of the monitoring point is performed, and when a fault recovery is performed, outputs a fault recovery signal until a reset signal is input and simultaneously displays a fault return display of low-speed blinking. Fault indication module; And, when at least one fault occurrence signal is input from each fault display module, an intermittent high sound fault alarm is generated until an alarm stop signal is input, and when the fault return signal is input, a low fault fault alarm is generated. System monitoring panel comprising a failure alarm module for. The system monitoring panel according to claim 1, wherein the fault display module receives first and second frequency signals for fast flashing and slow flashing from the fault alarm module. 3. The system monitoring board according to claim 2, wherein the first frequency signal is a frequency signal for intermittent treble of the fault alarm module. 4. The system monitoring board according to claim 3, wherein the second frequency signal is a low frequency signal of the fault alarm module. 3. The fault display module according to claim 2, wherein the fault display module comprises: fault signal receiving means for receiving a fault signal generated from a predetermined monitoring point of the system and outputting a fault occurrence signal; Display lamp driving means for driving the display lamps with high speed flashing, lighting and low speed flashing by receiving the first and second frequency signals of the fault warning module by the fault display control signal of the fault signal receiving means; And a fault return detecting means for detecting a fault return state of a predetermined monitoring location through said fault signal receiving means and generating a fault return signal. 6. The apparatus of claim 5, wherein the fault signal receiving means comprises: an optical isolation element for electrically isolating the predetermined winding point of the system; A one-shot circuit including a capacitor for generating a negative pulse signal when a failure occurs through the optical isolation element; A first latch circuit which is set by a buffer signal of the one-shot circuit and reset by a fault reception confirmation signal; A switching element for outputting a high level fault occurrence signal by the constant output signal of the first latch circuit; A second latch circuit set by the sub-output signal of the first latch circuit, reset by the reset signal, and outputting its positive output signal as a failure display control signal; And a switch circuit for generating a positive pulse signal at the time of resetting the second latch circuit to discharge the capacitor of the one-shot circuit. 7. The apparatus of claim 6, further comprising: a first gate circuit for gated a fault recovery signal through said optical isolation element in said fault recovery detection means and in a reset phase of said first latch circuit; A second gate circuit that gates the inverted output of the first gate circuit in the set state of the second latch circuit; And a switching element for outputting a fault recovery signal at a low level output of said second gate circuit. The display device of claim 7, wherein the display lamp driving unit comprises: a diode logical multiplication circuit configured to input a fault display control signal of the fault signal receiving unit to one side and a first or second frequency signal of the fault alarm module to the other side; A driving transistor for driving a display lamp by the output of said diode AND circuit; And a gate for supplying the first or second frequency signal of the fault alarm module to the diode AND circuit only at the low level output of the first latch circuit and the low level output of the second gate circuit of the fault detection means. A system monitoring panel comprising a circuit. The system of claim 2, wherein the fault alarm module comprises: first alarm signal generating means for generating an intermittent high-level fault alarm until an alarm stop signal is input when a fault occurrence signal is input from the fault indication module; Second alarm signal generating means for generating a low-level fault return alarm for a predetermined time when a fault return signal is input from the fault indication module; And driving means for driving the sound generator by inputting the fault alarm signal of the first alarm signal generating means or the fault return alarm signal of the second alarm signal generating means. 10. The apparatus of claim 9, wherein the first alarm signal generating means comprises: a third latch circuit set when the fault occurrence signal is input and reset by an alarm stop signal; A first oscillation circuit for generating a high acoustic audio frequency signal by the constant output signal of the third latch circuit; A second oscillation circuit for generating a first frequency signal while the fault generation signal is input; And a switching circuit for intermittently outputting the high sound audible frequency signal of the first oscillation circuit in accordance with the first frequency signal of the second oscillation circuit. 11. The apparatus of claim 10, wherein the second alarm signal generating means comprises: a third oscillation circuit for generating a low audible audible frequency signal when a fault return signal is inputted to the fault display module; A fourth oscillation circuit for generating a second frequency signal when a fault return signal is input from the fault indication module; And a fifth oscillation circuit for intermitting that the fault return signal is input to the first oscillation circuit every predetermined time. ※ Note: The disclosure is based on the initial application.