Vacuum tube vacuum-degree on-line monitoring device of high-voltage power distribution device and method thereof
A high-voltage power distribution and vacuum tube technology, applied in vacuum gauges, measuring devices, measuring fluid pressure, etc., can solve the problems of poor temperature stability and inaccurate measurement, and achieve the effects of low cost, improved reliability, and automatic operation.
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[0018] A kind of on-line monitoring device used for the vacuum degree of the vacuum tube in the high-voltage power distribution device according to the implementation of the present invention is as follows:
[0019] Such as figure 1 is the structure diagram of the monitoring device, Figure 2-Figure 7 It is the circuit schematic diagram of each unit of the monitoring device. The device includes a capacitor coupler, a capacitor voltage divider, a signal pickup circuit, a precision rectification filter circuit, a voltage-frequency conversion circuit, a microprocessor unit, an audible and visual alarm unit and a communication unit. in:
[0020] The two metal plates of the capacitive coupler are connected by a capacitive voltage divider composed of three capacitors of the same medium in series. The induced AC electric field signal is sampled and drawn out by the low-voltage arm of the capacitive voltage divider, and the sampled signal is directly connected to the signal On the ...
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