KR-102962435-B1 - Multiple protection devices for Nuclear PR, NEMP and non-nuclear NNEMP

Abstract

The present invention relates to a multi-protection device for nuclear PR, NEMP, and non-nuclear NNEMP, wherein the device comprises a PR (Prompt gamma-ray), NEMP (Nuclear Electromagnetic Pulse), and non-nuclear NNEMP multi-protection device provided between a power source and an electronic device, the device comprising: a sensor circuit unit that outputs a sensing signal including at least one of a PR sensor that generates a photocurrent in response to gamma rays and an EMP sensing unit that detects EMP; an error filtering unit that generates a final EMP detection signal based on the sensing signal; a multi-signal processing unit that receives the outputs of the sensor circuit unit and the error filtering unit and outputs a power cutoff command signal that controls the power based on a preset sensitivity; a power control unit that cuts off the power supplied to the electronic device based on the power cutoff command signal; and a connection port that is connected to or disconnected from the electronic device.

Inventors

• 이민웅
• 이남호
• 황영관
• 권희정
• 송근영
• 박원균

Assignees

• 한국원자력연구원

Dates

Publication Date

20260511

Application Date

20220930

Claims (10)

1. In a PR (Prompt gamma-ray), NEMP (Nuclear Electromagnetic Pulse), and non-NEMP (Non-NEMP) multi-protection device provided between a power source and an electronic device, A sensor circuit that outputs a sensing signal, including at least one of a PR sensor that generates a photocurrent in response to gamma rays and an EMP sensing unit that detects an EMP; An error filtering unit that generates a final EMP detection signal based on the above sensing signal; A multi-signal processing unit that receives the outputs of the sensor circuit unit and the error filtering unit and outputs a power cutoff command signal that controls the power based on a preset sensitivity; A power control unit that cuts off the power supplied to the electronic device based on the above power cutoff command signal; and Includes a connection port that is connected to or disconnected from the above electronic device; and The above EMP sensing unit is, External EMP sensor unit provided externally to detect EMP; Includes an internal EMP sensor unit equipped internally for detecting EMP; The above error filtering unit is, Outputting an error determination signal when the sensing signals of the external EMP sensor unit and the internal EMP sensor unit occur simultaneously. PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
2. In paragraph 1, Further including a power cutoff time adjustment unit provided between the multi-signal processing unit and the power control unit, which adjusts the maintenance time of the power cutoff command signal output from the multi-signal processing unit and provides it to the power control unit. PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
3. In paragraph 2, The above power cutoff time control unit is, An RC circuit including a capacitor and a resistor; and setting the holding time of the power cutoff command signal by a time constant determined by the RC circuit. PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
4. In paragraph 3, Further including a feedback inverter logic circuit that receives the output of the RC circuit output by the multi-signal processing unit and inputs a signal to the multi-signal processing unit to restore the power cut-off command signal after a predetermined time. PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
5. In paragraph 1, The above multi-signal processing unit is, Outputting the power cutoff command signal if the signal input from at least one of the sensor circuit and the error filtering unit is greater than or equal to the preset sensitivity. PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
6. In paragraph 4, The above power cutoff time control unit is, A switching element connected to the above RC circuit and the above power control unit, which maintains the voltage level of the power cutoff command signal at a predetermined voltage level after power cutoff and recovery; further comprising PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
7. delete
8. In paragraph 1, The above external EMP sensor unit is, A filter unit that detects only frequencies within a predetermined range; An indicator for measuring multiple voltages; and At least one 90° magnetic field sensor that measures the strength of a magnetic field and expands the detection area; comprising, The above 90˚ magnetic field sensor is, Each provided on a mutually perpendicular axis PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
9. In paragraph 1, The above internal EMP sensor unit is, Substrate; and at least one current probe provided at the edge of the substrate; comprising PR, NEMP, and non-nuclear NNEMP multi-protection device featuring
10. In Paragraph 9, The above internal EMP sensor unit is, A shunt resistor further comprising the above error filtering unit connected in parallel. PR, NEMP, and non-nuclear NNEMP multi-protection device featuring

Description

Multiple protection devices for Nuclear PR, NEMP and non-nuclear NNEMP The present invention relates to a multi-protection device, and more specifically, to a nuclear PR, NEMP, and non-nuclear NNEMP multi-protection device. When prompt gamma rays, a pulsed form of high-energy radiation (PR) during a nuclear explosion, are incident on electronic equipment, the high energy causes electrons within atoms to split, generating a large number of electron-hole pairs. Additionally, the applied bias causes unwanted current flow in electronic components. This leads to errors caused by an "upset" phenomenon where data values within the component change, or causes a "latch-up" phenomenon where parasitic thyristors within the electronic component operate, resulting in device failure. Furthermore, the movement of electrons generated by the nuclear explosion causes the occurrence of a Nuclear Electromagnetic Pulse (NEMP). The aforementioned NEMP refers to an electromagnetic burst caused by a nuclear explosion; the rapidly changing electric and magnetic fields resulting from this can be associated with electrical and electronic systems, causing harmful currents and voltage spikes. Consequently, the NEMP causes widespread lock-up phenomena in electronic equipment, resulting in the paralysis of military power. In addition to the aforementioned NEMP, there also exist NNEMPs (Non-NEMPs) that are artificially created using Intentional EMI generators, E-bombs, High Power Microwave (HPM), and Ultra Wide Band (UWB) generators, which cause damage to electronic equipment and communication networks in specific areas within a few kilometers. As described above, the high-energy PR, nuclear NEMP, and NNEMP generated during a nuclear explosion cause malfunctions and functional paralysis in components and electronic systems, posing a serious risk to key national facilities and military weapon systems. Currently developed and applied technologies for protecting electronic equipment from nuclear explosion damage have a problem in that they are applied independently to pulsed radiation and NEMP damage that occur simultaneously in the initial stages. This is because if only one side is protected, the equipment intended for protection will be damaged by the energy from the other side. To overcome the above problem, for example, Patent Publication No. 10-2017-0103555 discloses a technology that combines a TVS (Transient Voltage Suppression) for NEMP protection and a NED (Nuclear Event Detector) for PR blocking into a single module. This allows active power control techniques to be simultaneously applied to NEMP protection using the signal from the NED sensor. However, there is a problem in that the detection area of the aforementioned NED sensor is relatively narrow compared to NEMP, so the active protection area of NEMP covers only a portion of the total NEMP damage area. Additionally, there is a problem in that the NED and the power control circuit must be configured separately. Furthermore, non-nuclear NEMP caused by EMP bombs mounted on missiles or aircraft-dropped bombs can widely neutralize enemy communication networks or command and control systems with power approximately 100 times stronger than lightning, and portable EMP bombs attack enemy rear areas, densely populated civilian areas, or areas operating advanced equipment to halt equipment operations, thus requiring protective measures. In other words, existing EMP protection technology (Shield Filter) has limitations in applicability to various fixed and mobile advanced electronic weapon systems. In particular, transient surge currents induced inside electronic equipment by external high-output electromagnetic energy are incompletely blocked by existing EMP protection technology, so it is necessary to block the influence of Fault Signals generated when the power is turned ON and OFF. FIG. 1 is a block diagram illustrating the configuration of a nuclear PR, NEMP, and non-nuclear NNEMP multi-protection device according to an embodiment of the present invention, and FIG. 2 is a drawing specifically illustrating FIG. 1, and FIG. 3 is a drawing illustrating an external EMP sensor unit according to an embodiment of the present invention, and FIG. 4 is a drawing illustrating an internal EMP sensor unit according to an embodiment of the present invention, and FIG. 5 is a circuit diagram illustrating an error filtering unit according to an embodiment of the present invention, and FIG. 6 is a circuit diagram illustrating an error filtering unit according to another embodiment of the present invention, and FIG. 7 is a circuit diagram illustrating a multi-signal processing unit according to an embodiment of the present invention, and FIG. 8 is a circuit diagram illustrating a radiation-resistant multi-signal processing unit according to another embodiment of the present invention, and FIG. 9 is a graph showing the simulation results of a power cutoff time control unit according to an embodiment o