Lightning-striking sensor system adopting Hall linear element

Abstract

The invention discloses a lightning-striking sensor system adopting a Hall linear element, which comprises a surge protector, the Hall linear element and a micro-control processing module. The surge protector is provided with an access circuit end and a grounding end, and the grounding end is grounded through an electric conductor; the Hall linear element is arranged nearby the electric conductor; a first end of the Hall linear element is connected with a power supply; and a second end of the Hall linear element is grounded. The micro-control processing module is connected with a third end of the Hall linear element. Compared with the prior art, the Hall linear element is adopted to output a corresponding voltage number when the strength of a magnetic field is varied so as to detect the lightning-stroke surge; and at the same time, the circuit is simple, the cost is low, and the detection of the lightning-stroke current is realized only through the Hall linear element.

Description

technical field [0001] The invention relates to a lightning strike sensor, in particular to a lightning strike size sensor system using a Hall linear element. [0002] Background technique [0003] When the current passes through the conductor, a magnetic field will be generated around the conductor, and the direction of the generated magnetic field can be judged by the right-handed helical rule. When the current passing through the conductor changes, the magnetic field generated around the conductor will also change accordingly. The magnetic field is directly proportional to the magnitude of the current flowing in the conductor. [0004] The existing lightning strike sensors are mainly induced by inductance coils. The working principle is: put the inductance coil in the magnetic field. When the magnetic flux passing through the coil changes, an induced electromotive force will be generated at both ends of the inductance coil. The magnitude of the induced electromo...

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Problems solved by technology

From the above analysis, it can be known that in order to be very sensitive to sense the lightning current with small energy, the inductance of the coil must be made very large, which makes the coil have a large number of turns and a large volume. Equipment with limited space will pose no small challenge

At the same time, because the inductance coil is used as the inductor, when the instantaneous irregular lightning current wave passes through, a high peak voltage will be generated at both ends of the inductance, and there will be many damped oscillation waves generated at the same time. If these peak voltages are not handled properly, the Damage the load circuit at the back, and the oscillating wave at the back will also cause interference to the load

If a suppression circuit is added to suppress it, this will cause inaccurate detection of the magnitude of the lightning current. Therefore, this kind of sensor that induces a large lightning current has poor accuracy, and the circuit is more complicated. Many components are used, resulting in high cost.

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