SU871173A2 - Emergency mode indicator - Google Patents

Description

(54) EMERGENCY MODE SIGNALIZER

one

The invention relates to signal automation and can be applied in the development of alarm systems and multipoint monitoring, where there are a large number of control points for technological parameters and equipment status.

The closest technical solution to the invention is the alarm indicator of emergency operation under aut. St. No. 623222, containing the output transistor, the collector of which is connected to the alarm lamp, capacitors, resistors, transistor, switching and generation thyristors. Some capacitors are connected between buses of positive polarity input signals and a switching thyristor control electrode, other capacitors are connected between negative polarity input buses and a transistor base, whose collector is connected to a switching thyristor control electrode, the anode of which is connected via a reset button and a resistor is connected to the cathode of the thyristor of generation, connected through another capacitor to the midpoint of the voltage divider on the resistors, connected between the bus of the output signals of the field polarity and the base transistopat.

The aim of the invention is to increase the reliability of the device by ensuring its constant self-control during operation.

The goal is achieved by the fact that in the proposed device

ts, the inverters are introduced by the number of buses of negative polarity input signals; the first, second, and third decoupling diodes, transistor switches, and signal lamps by the number

Claims (1)

30 buses of input signals of negative and positive polarity, AND element and OR element. The inputs of the igniter are connected to the corresponding buses of the input signals of negative polarity, the outputs of the inverters and the bus cable of the input signals of positive polarity are connected to the anodes of the first and second diodes, the cathodes of the first diodes are connected to the bases of the corresponding transistor switches. The cathodes of the second dissolving diodes are connected to the first input of the element I, the second input of which is connected to the output of the element NO, whose input is connected to the emitter of the output transistor. The output element And is connected to the anodes of third development diodes, the cathodes of which are connected to the bases of the corresponding transistor switches, the emitters of which are connected to the negative polarity output signals, and the collectors are connected to the output polarity output signals through a corresponding signal lamp. The drawing shows a signaling circuit of emergency modes. The indicator contains inputs of positive polarity I inputs, each of which is made in an RC circuit and negative polarity I inputs, also made in the form of RC circuits, resistors 2–8 capacitors 9–10, transistors 11–13 thyristors 14 -15, signal lamps 16-17, inverters 18, element NOT 19, element I 20, developed diodes 21, 22, 23, and the reset button 24. The indicator works as follows. When a positive polarity is applied to one of the charging inputs, the corresponding capacitor is charged. In this case, the capacitor charge current flows through the thyristor 14, the thyristor opens and remains open due to the voltage drop between its anode and cathode. Through an open thyristor 14, the pulse generation circuit is assembled, assembled on thyristor 15, resistors 4-6 and capacitor 10. Loka thyristor 15 is closed, and the accumulation of the charge on capacitor 10 through resistors 5-6 occurs. When the voltage on the capacitor IO is increased to the value at which the thyristor 15 is opened, through it the discharge of the capacitor 10 occurs to the magnitude of the voltage at which the thyristor 15 closes. The process then repeats. The voltage from the resistor 7 is supplied to the base of the transistor 12, through which the signaling lamp 16 is powered, which signals an emergency situation. The input signal through the isolating diode 23 and the resistor 8 is fed to the base of the corresponding transistor switch 13, it turns off and turns on the signal lamp indicating the specific place of the emergency situation. When a negative polarity signal arrives at one of the inputs, the 1-n signal is inverted by the transistor 11 and goes through the capacitor 9 to the switching thyristor 14. In addition, the input signal is inverted by the corresponding inverter 18 and through the corresponding expansion diode 23 and key 13. The rest of the scheme works similarly. In the event of a device malfunction, when a signal is present at any of the inputs, and there is no signal at the device output (lamp I6 is off), the circuit works as follows. The input signal through the isolating diode 21 is fed to one input of the AND 20 circuit. At the input of the HE 19 circuit, there is no signal, and at its output in this case there is a signal that arrives at the second input of the AND 20 circuit. The diodes 22 and the resistors 8 are fed to the inputs of the keys 13. As a result, all the signal lamps 17 light up, which indicates a malfunction of the device. When the reset button 24 is pressed, the thyristor 14 is turned off and the device is reset. The economic effect is in the operability of the device even when some of the alarm elements are out of order. Claims of the emergency signaling device according to aut. St. No. 623222, characterized in that, in order to increase reliability, inverters are introduced according to the number of buses of negative polarity input signals, the first second and third decoupling diodes, transistor switches and signal lamps by the number of input buses of negative and positive polarity signals, AND element and OR element, inverter inputs are connected to the corresponding negative polarity of the input signals, inverter and receiver outputs of the positive signals the polarities are connected to the anodes of the first and second dissolving diodes, the cathodes of the first diverting diodes are connected to the bases of the corresponding thyristor switches, the cathodes of the second diverting diodes, enes to the first input of the AND, the second input of which is connected to the output element is NOT, the input of which is connected to the emitter of the output transistor, the output code of the element AND is connected to the anodes of the third converting diodes, the cathodes of which are connected to the bases of the corresponding transistor switches, the emitters of which are connected to the bus of the output signals of negative polarity, and {the collectors are connected to the bus of the output signals of the positive polarity through a corresponding signal lamp. Sources of information taken into account in the examination . USSR author's certificate number 623222, cl. G 08 B 21/00, 1976 (prototype).