Method for measuring electromagnetic pulse contactlessly

Abstract

To solve a problem in which, when a high-voltage electromagnetic pulse emitted from an object is measured, a connection line to the object that emits the high-voltage electromagnetic pulse and a transformer connected through the connection line are always required, creating a risk of electric shock.SOLUTION: The present invention eliminates a need for a connection line to an object that emits a high-voltage electromagnetic pulse and a transformer connected through the connection line by adopting a non-contact approach, by using, as reference data, three-direction magnetic data obtained by a geomagnetic sensor for detecting magnetic fields in three directions when the object is not emitting the high-voltage electromagnetic pulse, and by quantifying the amount of disturbance, relative to the reference data, of three-direction magnetic data obtained when the object is emitting the high-voltage electromagnetic pulse.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for non-contact measurement of high voltage electromagnetic pulses emitted from an object. [Background technology]

[0002] A known method for emitting high-voltage electromagnetic pulses is to use a transformer connected by a wire to boost the voltage and then convert it into a digital value using an electronic circuit.

[0003] Transformers use electromagnetic induction and can boost voltage by changing the turns ratio.

[0004] To use a transformer to boost a high voltage of around 10,000 volts to a low voltage of around 5 volts, the winding ratio of the primary coil on the high voltage side to the secondary coil on the low voltage side is around 2,000:1.

[0005] A large iron core is required to generate electromagnetic induction without magnetic saturation with a turns ratio of approximately 2,000:1 between the high-voltage side primary coil and the low-voltage side secondary coil. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 4953270 Amorphous core transformer Summary of the Invention [Problem to be solved by the invention]

[0007] When measuring a high voltage electromagnetic pulse emitted from an object, the connecting wire to the object emitting the high voltage electromagnetic pulse and the transformer connected to this are not required. [Means for solving the problem]

[0008] This method uses a geomagnetic sensor to detect magnetism in three directions, and uses the three-direction magnetic data when an object is not emitting a high-voltage electromagnetic pulse (i.e., geomagnetic data) as reference data, and measures voltage by quantifying the amount of disturbance in the three-direction magnetic data when an object is emitting a high-voltage electromagnetic pulse relative to the reference data.

[0009] This method quantifies voltage by measuring the disturbance to the reference data without saturating the geomagnetic sensor due to the characteristics of electromagnetic pulses emitted at a point some distance away from the object that emits the high-voltage electromagnetic pulse being attenuated by spatial loss.

[0010] This method utilizes the property that magnetic data changes when metal objects such as cars pass near a geomagnetic sensor, but does not change when non-metals pass near it, so it is a method that does not easily interfere with measurements by animals or living things such as people. [Effects of the Invention]

[0011] The present invention is a method for measuring high voltage electromagnetic pulses emitted from an object without contact, eliminating the need for a connecting wire to the object and a transformer connected thereto.

[0012] This measurement method does not directly come into contact with the high-voltage electromagnetic pulse emitted from the object, so the measuring equipment used in this method is less likely to be destroyed by the high-voltage electromagnetic pulse. [Brief explanation of the drawings]

[0013] [Figure 1] Figure 1 shows a method for measuring high-voltage electromagnetic pulses emitted from an object using a measuring device with a built-in geomagnetic sensor for detecting magnetism in three directions. (Example) DETAILED DESCRIPTION OF THE INVENTION

[0014] A measuring device 5 incorporating a geomagnetic sensor for detecting magnetism in three directions is installed at a position away from the installation position of an object 2 that emits a high-voltage electromagnetic pulse and is installed with a support tool 1.

[0015] A high voltage 3 of, for example, about 6,000 to 10,000 volts is applied to an object 2 that emits a high voltage electromagnetic pulse with an emission cycle 4 of, for example, one second.

[0016] The measuring instrument 5, which has a built-in geomagnetic sensor for detecting magnetism in three directions, uses the magnetic data in three directions, i.e., the geomagnetic data, when the high-voltage voltage 3 is not applied during the emission period 4 of the high-voltage electromagnetic pulse as reference data.

[0017] A measuring instrument 5, which has a built-in geomagnetic sensor for detecting magnetism in three directions, quantifies the amount of disturbance in the magnetic data in three directions relative to the reference data when a high-voltage voltage 3 is applied with a high-voltage electromagnetic pulse emission period 4.

[0018] The amount of disturbance of the magnetic data in three directions relative to the reference data is determined by the distance between the object 2 that emits the high-voltage electromagnetic pulse and the measuring device 5 that has a built-in geomagnetic sensor for detecting magnetism in three directions.

[0019] The amount of disturbance of the magnetic data in the three directions relative to the reference data is proportional to the high voltage 3 of the object 2 that emits the high voltage electromagnetic pulse. [Industrial Applicability]

[0020] The embodiment of FIG. 1 shows a method for non-contact measurement of high voltage electromagnetic pulses emitted from an object.

[0021] The example in Figure 1 shows that it is possible to detect when an object stops emitting high-voltage electromagnetic pulses due to a natural disaster or equipment failure. [Explanation of symbols]

[0022] 1 Support 2. An object that emits a high-voltage electromagnetic pulse 3 High voltage, for example, between 6,000 and 10,000 volts 4 For example, the emission period of a high-voltage electromagnetic pulse with a period of 1 second 5. A measuring instrument with a built-in geomagnetic sensor for detecting magnetic fields in three directions

Claims

[Claim 1] This method uses a geomagnetic sensor for detecting magnetism in three directions, and uses the three-directional magnetic data when an object is not emitting a high-voltage electromagnetic pulse, i.e., geomagnetic data, as reference data, and measures voltage by quantifying the amount of disturbance in the three-directional magnetic data when an object is emitting a high-voltage electromagnetic pulse relative to the reference data.

Images