An illuminator fault monitoring device
A fault monitoring and illuminator technology, which is applied to lighting devices, lamp circuit layout, light sources, etc., can solve the problems of untimely maintenance, low work efficiency, high power consumption, etc., achieve timely alarm at fault points, improve the degree of intelligence, The effect of high work efficiency
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Embodiment 1
[0034] A lighting fault monitoring device, the power supply line provides 220V50Hz alternating current. As we all know, the AC current output by the current transformer 9 at this time i The change period is also 50Hz, such as Figure 5 , Image 6 As shown by the dotted line, it will not be repeated here.
[0035] Such as figure 1 As shown, the current limiting resistor 6 is a circuit form of a pull-up resistor. When the illuminator 10 is in a normal working state, the power supply line 12 will have a current flow, and the current transformer 9 will sense and transmit an alternating current. The flow direction of the alternating current is consistent with the When the conduction directions of the light emitting diodes in the photocoupler 7 are consistent, the light emitting diodes in the photocoupler 7 will be driven to emit light and irradiate the base of the phototransistor of the photocoupler 7, and the base will be in a conduction state after being illuminated. Make the...
Embodiment 2
[0038] A lighting fault monitoring device, the power supply line provides 220V50Hz alternating current. As we all know, the AC current output by the current transformer 9 at this time i The change period is also 50Hz, such as Image 6 The dotted line will not be repeated here. Such as figure 2 As shown, the current limiting resistor 6 is a circuit form of a pull-down resistor. When the illuminator 10 is in a normal working state, the power supply line 12 will have a current flow, and the current transformer 9 will sense and output an alternating current. The flow direction of the alternating current is related to the photoelectric When the conduction directions of the light emitting diodes in the coupler 7 are consistent, the light emitting diodes in the photocoupler 7 will be driven to emit light and irradiate the base of the phototransistor of the photocoupler 7, and the base is in a conduction state after being illuminated, so that The level of the monitoring pin is hig...
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