SU1368906A1 - Apparatus for pulsed light signalling - Google Patents

Abstract

This invention relates to automatic light-signaling devices and can be used in buoys and maca. The aim of the invention is to improve the functional reliability of the device by automatically turning on the backup light source upon exit from the main building. In the event of a short circuit of the source of the source 8, the voltage at the output of the converter I triggers the operation of the comparator 7. The voltage at its output through the element OR 9, the amplifier 10 and the key II causes the light source 8 to be disconnected from the power supply 20. At the same time, the light source 17 is turned on. When the source 8 filament burns out, the voltage pulses no longer flow through the key 14 to the first input of the element OR 13, which also leads to the switching on of the backup source 17. I Il. from the next

Description

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This invention relates to automatic light-signaling devices and can be used in buoys and maca.

The aim of the invention is to increase the functional reliability of the device by automatically turning on the backup light source when the main light source is peeled off or short-circuited.

The drawing shows a functional diagram of the device.

The device contains current transformers 1 and 2, integrating elements 3 and A, key 5, multivibrator 6, comparator 7, light source 8 key

., element OR 9, amplifier 10, voltage source 12, element OR 13, switch 14, amplifier 15, switch 16, light source 17, switch 18, comparator 19 and power supply 20.

In the simplest case, the current-to-voltage converters 1 and 2 can be made in the form of a resistor, the integrating elements 3 and 4 can be made in the form of a series-connected limiting resistor and a capacitor.

The device works as follows.

When the key 5 is closed, the multivibrator 6 generates voltage pulses. At the same time, the transient process in the integrating element 3 begins. During the transient process, a signal arrives at the input of the comparator 7. This signal blocks the triggering of the comparator 7 for the duration of heating of the filament of the light source 8. The transition time of the integrating element 3 is set longer than the heating time of the filament of the light source 8.

From the first output of the multivibrator 6, the voltage pulses through the series-connected elements OR 9 and the amplifier 10 are fed to the control input of the switch 11, which switches the SOURCE 8 light. During operation of the device, the filament of the light source 8 does not have time to cool down during the pause between pulses, npif this current inrush when the filament is turned on does not exceed 2-3 times the nominal value. The voltage taken from the current-to-voltage converter 1 is less than the level of the source 12 of the reference voltage, as a result of which the comparator 7 does not operate.

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From the second output of the multivibrator 6, the voltage pulses arrive at i the third input of the element OR 13, to the first input of which through the open key 14 receives the antiphase voltage pulses. As a result, a constant voltage is generated at the output of the element OR 13, which locks the amplifier 15. As a result, the key-16 is closed and the second (stand-by) light source 17 is not supplied with a pulsed current. The signal from the converter 2 does not receive the current-voltage to the input of the comparator, the latter does not work, the signal to the second input of the element OR 13 is not received.

In the event that the main light source 8 light source burns out, the first input of the element OR 13 does not receive voltage pulses, therefore the output voltage of the element OR 13 does not generate a constant voltage, but there are voltage pulses that are fed through the amplifier 15 to the control input of the switch 16 and control key input 18. Key 16 begins to switch back-up light source 17. The key 18 connects the integrating element. ment 4 to the negative power supply bus. In the integrating element 4, a transient begins, during which the control input of the comparator 19 receives a signal blocking the comparator 19 from being triggered for the warm-up time of the rezerr light source 17.

In case of a short circuit of the light source 8, the output signal, the converter 1, the current-voltage exceeds the level of the reference voltage at the corresponding input of the comparator 7, the comparator 7 is activated and a constant level is formed at its output

5, which locks key 14, as well as through the second input of the element OR 9, amplifier 10. Thus, key I1 closes and the short circuit is broken. At the same time, the supply of antiphase voltage pulses to the first input of the element OR 13 stops, which leads to the activation of the backup source 17 of light.

In case of a short circuit in the filament circuit of the source 17 of the light, the signal at the output of the converter 2, the current-voltage exceeds the level of the reference voltage of the source 12, the comparator

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It also produces a constant voltage level at its output, through the second input of the element 13 and the amplifier 15 opens the key. In this case, the key 16 breaks the circuit of the tight closure of the thread of the wind source.

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Claims (1)

Claim 10 15 A pulse light signaling device comprising a multivibrator, two elements OR, a first amplifier, a switch, a first light source, a power source, characterized in that, in order to increase the functional reliability of the device, a second light source, a second amplifier, four switches, two current transducers, two comparators, two integrating elements and a source of reference voltage, n. The output of the multivibrator is connected to the first input of the first OR element, the output of which through the amplifier is switched to the control input of the first key, and the third key is connected to the first input of the second OR element, the output of which is connected to the input of the second amplifier, whose output is connected to the control four inputs additionally, the fourth key is connected to the first terminal of the second current-voltage converter, the second terminal of which is connected to the negative terminal of the power source, the third terminal of the first converter The current-voltage gate is connected to the first information input of the first 15 comparator, the output of which is connected to the control input of the third key and the second input of the first OR element, the third output of the second current-voltage converter is connected to the second information input of the second comparator, the output of which is connected to the second the input of the second element OR the output of the voltage source is connected to the second information inputs of the first and second comparators; the negative terminal of the power source is through the first integrating element The element is connected to the control input of the first comparator, the negative input of which is connected to the first output of the first current transformer — 30 to the power supply terminal; a connection, the second pin of which is connected to the information input of the fifth key to the negative terminal of the source key, whose output through the second power nickname, the positive terminal integrating element is connected to the input of which is connected to the first control terminal of the second comparator, the second key, the second output of which 35 is the second output of the second light source connected to the first outputs first connected to the input of the fourth key and the second light source; the second, second output of the multivibrator connecting the first light source to the third input of the second element to the information inputs of the first OR. 0 first and third switches connected to the first input of the second OR element, the output of which is connected to the input of the second amplifier, the output of which is connected to the control inputs of the fourth and fifth keys, the output of the fourth switch is connected to the first of the second current-voltage converter, the second output of which is connected to the negative terminal of the power supply, the third output of the first current-voltage converter is connected to the first information input of the first 5 comparator, the output of which is connected to the control input of the third key and To the input of the first element OR, the third output of the second current-voltage converter is connected to the first information input of the second comparator, the output of which is connected to the second input of the second OR element, the output of the reference voltage source is connected to the second information inputs of the first and second comparator negative power supply terminal through the first integrating element is connected to the control input of the first comparator, negative 0 five The 0 terminal of the power supply is connected to the information input of the fifth key, the output of which through the second integrating element is connected to the control input of the second comparator, 5 the second output of the second light source is connected to the input of the fourth key, the second output of the multivibrator is connected to the third input of the second element - that OR.