CN119134249A - Intelligent adaptive lightning level protection device and lightning protection method - Google Patents
Intelligent adaptive lightning level protection device and lightning protection method Download PDFInfo
- Publication number
- CN119134249A CN119134249A CN202411598720.2A CN202411598720A CN119134249A CN 119134249 A CN119134249 A CN 119134249A CN 202411598720 A CN202411598720 A CN 202411598720A CN 119134249 A CN119134249 A CN 119134249A
- Authority
- CN
- China
- Prior art keywords
- resistor
- circuit
- capacitor
- wire
- lightning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000003044 adaptive effect Effects 0.000 title abstract 4
- 238000012545 processing Methods 0.000 claims abstract description 29
- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 136
- 238000005070 sampling Methods 0.000 claims description 39
- 230000003750 conditioning effect Effects 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 27
- 239000011324 bead Substances 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 12
- 230000001143 conditioned effect Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 2
- IWUCXVSUMQZMFG-AFCXAGJDSA-N Ribavirin Chemical compound N1=C(C(=O)N)N=CN1[C@H]1[C@H](O)[C@H](O)[C@@H](CO)O1 IWUCXVSUMQZMFG-AFCXAGJDSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 101000699762 Homo sapiens RNA 3'-terminal phosphate cyclase Proteins 0.000 description 1
- 102100029143 RNA 3'-terminal phosphate cyclase Human genes 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
- H03H7/40—Automatic matching of load impedance to source impedance
Landscapes
- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Selective Calling Equipment (AREA)
Abstract
本发明公开了智适应雷电等级防护装置，包括雷电采集电路，所述雷电采集电路连接有处理电路，所述处理电路通过有线连接方式连接有MCU控制器，所述MCU控制器分别通过有线连接方式连接有控制矩阵电路和显示电路，所述控制矩阵电路通过有线连接方式连接有防护网格单元；还包括电源电路，所述电源电路分别与雷电采集电路、处理电路、MCU控制器、控制矩阵电路、防护网格单元和显示电路电性连接。本发明还公开了使用上述智适应雷电等级防护装置进行雷电防护的方法。本发明提供的智适应雷电等级防护装置，解决了现有飞机在飞行过程中遭受直接雷后感应雷的能量大于防护电路防护能力时，会导致后端设备受损的问题。
The present invention discloses an intelligent adaptive lightning level protection device, including a lightning collection circuit, the lightning collection circuit is connected to a processing circuit, the processing circuit is connected to an MCU controller by a wired connection, the MCU controller is respectively connected to a control matrix circuit and a display circuit by a wired connection, and the control matrix circuit is connected to a protection grid unit by a wired connection; and also includes a power supply circuit, the power supply circuit is respectively electrically connected to the lightning collection circuit, the processing circuit, the MCU controller, the control matrix circuit, the protection grid unit and the display circuit. The present invention also discloses a method for lightning protection using the above-mentioned intelligent adaptive lightning level protection device. The intelligent adaptive lightning level protection device provided by the present invention solves the problem that when the energy of the induced lightning after the existing aircraft is directly subjected to lightning during flight is greater than the protection capacity of the protection circuit, the back-end equipment will be damaged.
Description
Technical Field
The invention belongs to the technical field of lightning protection, in particular relates to an intelligent lightning grade protection device, and also relates to a lightning protection method by using the intelligent lightning grade protection device.
Background
The existing lightning protection device mainly completes protection of known quantitative lightning grades, such as lightning grade 3 waveform 4 (300V/60A), grade 4 waveform 5A (750V/750A), grade 5 waveform 3 (3200V/128A) and the like specified in lightning induction transient sensitivity test in RTCA/DO-160G airborne equipment environmental condition and test procedure, and the like, and is specifically shown in the following table 1.
Table 1 pin injection test grade
Before a lightning test is carried out, injected voltage and current parameters are known clearly, the back-end equipment calculates according to the determined voltage and current, and a proper effective protection circuit is selected to protect the back-end equipment, so that the equipment can operate stably and reliably under the lightning energy. However, in the actual aircraft flight process, the inductive indirect lightning caused by the direct lightning is suffered, the inductive lightning energy is unknown, even if the rear-end protection circuit has a certain derating design, the situation that the energy is larger than the protection capacity may exist, and under the situation, the problem that the rear-end equipment is damaged due to poor protection may exist.
Disclosure of Invention
The invention aims to provide an intelligent lightning grade protection device, which solves the problem that rear-end equipment is damaged when the energy of the induced lightning is larger than the protection capability of a protection circuit after the direct lightning is suffered in the flight process of the existing aircraft.
It is another object of the present invention to provide a method of lightning protection using the above-described intelligently adapted lightning grade protection means.
The first technical scheme adopted by the invention is that the intelligent lightning grade protection device comprises a lightning acquisition circuit, wherein the lightning acquisition circuit is connected with a processing circuit in a wired connection mode, the processing circuit is connected with an MCU (micro control unit) controller in a wired connection mode, the MCU controller is respectively connected with a control matrix circuit and a display circuit in a wired connection mode, and the control matrix circuit is connected with a protection grid unit in a wired connection mode;
The lightning protection device further comprises a power supply circuit which is electrically connected with the lightning acquisition circuit, the processing circuit, the MCU controller, the control matrix circuit, the protection grid unit and the display circuit respectively.
The invention is also characterized in that:
The processing circuit comprises an integral filter circuit, the input end of the integral filter circuit is connected with the output end of the lightning acquisition circuit in a wired mode, the output end of the integral filter circuit is connected with a signal conditioning circuit in a wired mode, the signal conditioning circuit is respectively connected with a comparison circuit and an AD sampling circuit in a wired mode, the comparison circuit is connected with an MCU controller, and the AD sampling circuit is integrated in the MCU controller.
The signal conditioning circuit comprises a voltage following circuit and a voltage dividing circuit, wherein the input end of the voltage following circuit is connected with the output end of the integrating filter circuit in a wired connection mode, the output end of the voltage following circuit is connected with the input end of the voltage dividing circuit, and the output end of the voltage dividing circuit is respectively connected with the input ends of the comparison circuit and the AD sampling circuit.
The integral filter circuit comprises two main wires, the output ends of the two main wires are connected with the input end of the signal conditioning circuit, a resistor R1, an inductor L2, an inductor L3 and an inductor L4 are sequentially connected in series from the lightning acquisition circuit to the signal conditioning circuit, the output end of the inductor L4 is connected with the input end of the signal conditioning circuit, a diode D4 is connected to the wire between the lightning acquisition circuit and the resistor R1 through the wire, the output end of the diode D4 is connected with a protection grounding end through the wire, and the resistor R1 is connected with the resistor R2 in parallel;
A resistor R3, a resistor R4, a TVS diode G1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9 are sequentially connected in parallel between the lightning acquisition circuit and the signal conditioning circuit, one end of the resistor R3, the resistor R4, the TVS diode G1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 are connected to a second main conductor between the lightning acquisition circuit and the signal conditioning circuit, the other end of the resistor R3 and the other end of the resistor R4 are connected to a conductor between the diode D4 and the resistor R1, the other end of the TVS diode G1, the capacitor C6, the other end of the capacitor C2 are respectively connected to conductors between the resistor R1 and the inductor L1, the other end of the capacitor C3 is connected to conductors between the inductor L2 and the inductor L3, the other end of the capacitor C7 is connected to the conductor between the inductor C4 and the main conductor between the capacitor C4 and the main conductor, and the other end of the capacitor C4 is connected to the conductor between the capacitor C4 and the main conductor;
the second main wire is connected with a diode D5 through a wire on the wire between the resistor R3 and the lightning acquisition circuit, and the other end of the diode D5 is connected with a protection grounding end through a wire.
The voltage follower circuit comprises a comparator U2B, a positive phase input pin of the comparator U2B is connected with an output end of the integral filter circuit, a positive side input pin of the comparator U2B is connected with a protection grounding end, a negative side input pin of the comparator U2B is connected with a power supply through a wire, the wire of the negative side input pin of the comparator U2B is connected with a capacitor C13 through a wire, the other end of the capacitor C13 is connected with a grounding end through a wire, the pin of the output end of the comparator U2B is connected with the negative phase input pin of the comparator U2B through a wire, a resistor R14, a resistor R15, a capacitor C12 and a resistor R20 are sequentially connected in series on the wire between the integral filter circuit and the comparator U2B, a resistor R21 is also connected on the wire between the resistor R15 and the capacitor C12 through a wire, the other end of the resistor R26 is connected with a resistor R26 through a wire and the grounding end, the wire between the capacitor C12 and the resistor R20 is sequentially connected with a resistor R13 and a resistor R24 through a wire, the other end of the resistor R13 is connected with a voltage reference, and the other end of the resistor R24 is connected with the grounding end through a wire;
The voltage dividing circuit comprises a resistor R16, a resistor R17, a resistor R18, a resistor R19 and a magnetic bead FB3 which are sequentially connected in series, wherein the resistor R16 is connected with an output end pin of a comparator U2B, the other end of the magnetic bead FB3 is connected with an adopted interface of an AD sampling circuit in the MCU controller, the resistor R16 and the resistor R17 are connected with a resistor R12 through wires, the other end of the resistor R12 is connected with a positive phase input pin of a comparator U1A and a negative phase input pin of the comparator U1B, wires between the resistor R18 and the resistor R19 are sequentially connected with a resistor R23, a diode D6 and a capacitor C10 through wires, the other end of the resistor R23 is connected with a resistor R27, the other end of the resistor R27 is connected with a grounding end through wires, the other end of the diode D6 is connected with a protection grounding end through wires, the other end of the capacitor C10 is connected with a capacitor C11 through wires between the magnetic bead FB3 and the comparison circuit, and the other end of the capacitor C11 is connected with the grounding end through wires.
The comparison circuit comprises two paths, wherein the first path of circuit comprises a comparator U1A, a positive phase input pin of the comparator U1A is connected with the output end of a resistor R12, a resistor R5 and a resistor R11 are sequentially connected in series with a negative phase input pin of the comparator U1A, the other end of the resistor R11 is connected with a grounding end through a wire, a resistor R6 and a resistor R8 are sequentially connected with a wire between the comparator U1A and the resistor R5 through wires, the other end of the resistor R6 is connected with a positive phase input pin of the comparator U1A, the other end of the resistor R8 is connected with a resistor R7, the other end of the resistor R7 is connected with a voltage reference, a capacitor C16 is also connected with the wire between the resistor R7 and the voltage reference through a wire, and the other end of the capacitor C16 is connected with the grounding end through a wire;
The positive side pin of the comparator U1A is connected with a protection grounding end through a wire, the negative side pin of the comparator U1A is connected with a power supply, the wire connected with the power supply through the wire is also connected with a capacitor C17, the other end of the capacitor C17 is connected with the grounding end through the wire, the pin of the output end of the comparator U1A is sequentially connected with a resistor R10 and a magnetic bead FB2 in series through the wire, the other end of the magnetic bead FB2 is connected with an MCU controller, the wire between the comparator U1A and the resistor R10 is sequentially connected with a resistor R9, a diode D1, a diode D2 and a capacitor C19 through the wire, the other ends of the resistor R9 are connected with the wire between the capacitor C17 and the comparator U1A, the other ends of the diode D1 and the capacitor C19 are respectively connected with the grounding end through the wire, the other ends of the diode D2 are connected with the protection grounding end through the wire, the wire connected with a capacitor C18 through the wire, and the other end of the capacitor C18 is connected with the grounding end through the wire;
the second circuit of the comparison circuit comprises a comparator U1B, wherein a negative phase input pin of the comparator U1B is connected with the output end of a resistor R12, a positive phase input pin of the comparator U1B is sequentially connected with a resistor R32 and a resistor R31 in series, the other end of the resistor R31 is connected with a grounding end through a wire, a resistor R35 and a resistor R34 are sequentially connected on the wire between the comparator U1B and the resistor R32 through wires, the other end of the resistor R35 is connected with the negative phase input pin of the comparator U1B, the other end of the resistor R34 is connected with a resistor R36, and the other end of the resistor R36 is connected with a voltage reference;
The positive side pin and the negative side pin of the comparator U1B share a power supply pin with U1A respectively, the output end pin of the comparator U1B is sequentially connected with a resistor R30 and a magnetic bead FB4 in series through wires, the other end of the magnetic bead FB4 is connected with an MCU controller, a resistor R29, a diode D7, a diode D8 and a capacitor C15 are sequentially connected to the wires between the comparator U1B and the resistor R30 through wires, the other end of the resistor R29 is connected with a power supply, the other ends of the diode D7 and the capacitor C15 are respectively connected with a grounding end through wires, the other end of the diode D8 is connected with a protection grounding end through wires, a capacitor C14 is also connected to the wires between the magnetic bead FB4 and the MCU controller through wires, and the other end of the capacitor C14 is connected with the grounding end through wires.
The lightning acquisition circuit captures lightning current signals through a lightning current sensor.
The second technical scheme adopted by the invention is that the intelligent lightning grade protection method is utilized, and the intelligent lightning grade protection device is used, and the specific method is as follows:
the lightning current sensor in the lightning acquisition circuit captures a lightning current signal through the acquisition body system, performs smooth filtering processing through the integral filtering circuit in the processing circuit, then enters the voltage follower circuit and the voltage dividing circuit to process the positive and negative polarity signal into a signal which can be acquired by the AD sampling circuit, and simultaneously triggers the controller to start AD sampling through the comparison circuit to realize AD sampling on the signal conditioned by the voltage follower circuit and the voltage dividing circuit, and then reduces the lightning current through an algorithm to obtain parameters such as peak current, maximum voltage and the like;
According to the peak current and the maximum voltage, the control system selects a protection network through an electronic switch, the protection grid units adopt a modularized design, and one or more protection networks can be combined for use through calculation, so that the lightning protection requirements are met;
After protection, the residual voltage and the residual current are displayed through a display.
The beneficial effects of the invention are as follows:
(1) The intelligent lightning grade protection device provided by the invention can automatically match with an optimal protection circuit according to different induced lightning current, exerts the protection effect to the greatest extent, and does not need to cause protection failure due to the change of the induced lightning current;
(2) The intelligent lightning grade protection device provided by the invention can effectively realize lightning protection on the premise of unknown lightning energy so as to automatically match with a protection circuit, wherein the lightning acquisition circuit acquires the lightning energy through the high-speed acquisition system, effectively decomposes the energy into voltage and current parameters, and the control system switches the protection circuit grids through the electronic switch to optimize the matrix type protection grids so as to search for an optimal protection circuit meeting the energy grade;
(3) According to the intelligent lightning grade protection device, the voltage dividing circuit is connected to the voltage following circuit, the voltage signal collected is ensured to be accurate through the voltage following circuit, and then the voltage is divided, so that the collection accuracy is ensured.
Drawings
FIG. 1 is a block diagram of a system connection of a smart lightning level guard of the present invention;
FIG. 2 is a circuit diagram of an integral filter circuit in the intelligent lightning grade protection device of the present invention;
FIG. 3 is a circuit diagram of a signal conditioning circuit in the intelligent lightning level protection device of the present invention;
FIG. 4 is a circuit diagram of a positive signal comparison circuit in the intelligent lightning level protection apparatus of the present invention;
fig. 5 is a circuit diagram of a negative signal comparison circuit in the intelligent lightning level protection device of the present invention.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The intelligent lightning grade protection device comprises a lightning acquisition circuit, wherein the lightning acquisition circuit is connected with a processing circuit in a wired connection mode, the processing circuit is connected with an MCU controller in a wired connection mode, the MCU controller is respectively connected with a control matrix circuit and a display circuit in a wired connection mode, and the control matrix circuit is connected with a protection grid unit in a wired connection mode;
The lightning protection device further comprises a power supply circuit which is respectively and electrically connected with the lightning acquisition circuit, the processing circuit, the MCU controller, the control matrix circuit, the protection grid unit and the display circuit to supply power for the circuits or the modules.
The processing circuit comprises an integral filter circuit, the input end of the integral filter circuit is connected with the output end of the lightning acquisition circuit in a wired mode, the output end of the integral filter circuit is connected with a signal conditioning circuit in a wired mode, the signal conditioning circuit is respectively connected with a comparison circuit and an AD sampling circuit in a wired mode, the comparison circuit is connected with the MCU controller, and the AD sampling circuit is integrated in the MCU controller.
The signal conditioning circuit comprises a voltage following circuit and a voltage dividing circuit, wherein the input end of the voltage following circuit is connected with the output end of the integrating filter circuit in a wired connection mode, the output end of the voltage following circuit is connected with the input end of the voltage dividing circuit, and the output end of the voltage dividing circuit is respectively connected with the input ends of the comparison circuit and the AD sampling circuit;
The lightning current sensor captures lightning current signals through electromagnetic induction, firstly carries out smooth filtering treatment through an integral filtering circuit, then enters a signal conditioning circuit to process positive and negative polarity signals into signals which can be collected by an AD sampling circuit, and meanwhile triggers an MCU controller to start AD sampling through a comparison circuit to realize AD sampling of the conditioned signals, and then restores the lightning current through an algorithm to obtain peak current, lightning current polarity and lightning stroke times.
Because the AD sampling circuit in the MCU controller can only collect positive voltage, the voltage signal output by the integrating filter circuit needs to be conditioned by the processing circuit. Specifically, as shown in fig. 2, the integrating filter circuit comprises two main wires, the output ends of the two lightning acquisition circuits are connected with the input end of the signal conditioning circuit, a resistor R1, an inductor L2, an inductor L3 and an inductor L4 are sequentially connected in series from the lightning acquisition circuit to the signal conditioning circuit on the first main wire, the output end of the inductor L4 is connected with the input end of the signal conditioning circuit, a diode D4 is also connected on the wire between the lightning acquisition circuit and the resistor R1 through the wire, the output end of the diode D4 is connected with a protection grounding end through the wire, and the resistor R1 is connected with a resistor R2 in parallel;
A resistor R3, a resistor R4, a TVS diode G1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9 are sequentially connected in parallel between the lightning acquisition circuit and the signal conditioning circuit, one end of the resistor R3, the resistor R4, the TVS diode G1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 are connected to a second main conductor between the lightning acquisition circuit and the signal conditioning circuit, the other end of the resistor R3 and the other end of the resistor R4 are connected to a conductor between the diode D4 and the resistor R1, the other end of the TVS diode G1, the capacitor C6, the other end of the capacitor C2 are respectively connected to conductors between the resistor R1 and the inductor L1, the other end of the capacitor C3 is connected to conductors between the inductor L2 and the inductor L3, the other end of the capacitor C7 is connected to the conductor between the inductor C4 and the main conductor between the capacitor C4 and the main conductor, and the other end of the capacitor C4 is connected to the conductor between the capacitor C4 and the main conductor;
the second main wire is connected with a diode D5 through a wire on the wire between the resistor R3 and the lightning acquisition circuit, and the other end of the diode D5 is connected with a protection grounding end through a wire.
As shown in fig. 3, the voltage follower circuit includes a comparator U2B, a positive phase input pin of the comparator U2B is connected with an output end of the integrating filter circuit, a positive side input pin of the comparator U2B is connected with a protection ground end, a negative side input pin of the comparator U2B is connected with a power supply through a wire, a wire of the power supply is connected with a capacitor C13 through a wire, the other end of the capacitor C13 is connected with a ground end through a wire, a pin of the output end of the comparator U2B is connected with a negative phase input pin of the comparator U2B through a wire, a wire between the integrating filter circuit and the comparator U2B is further connected with a resistor R14, a resistor R15, a capacitor C12 and a resistor R20 in series in sequence, a wire between the resistor R15 and the capacitor C12 is also connected with a resistor R21 through a wire, the other end of the resistor R26 is connected with a ground end through a wire, a wire between the capacitor C12 and the resistor R20 is also connected with a resistor R13 and a resistor R24 in sequence through a wire, the other end of the resistor R13 is connected with a voltage reference, and the other end of the resistor R24 is connected with the ground end through a wire;
The voltage dividing circuit comprises a resistor R16, a resistor R17, a resistor R18, a resistor R19 and a magnetic bead FB3 which are sequentially connected in series, wherein the resistor R16 is connected with an output end pin of a comparator U2B, the other end of the magnetic bead FB3 is connected with an adopted interface of an AD sampling circuit in the MCU controller, the resistor R16 and the resistor R17 are connected with a resistor R12 through wires, the other end of the resistor R12 is connected with a positive phase input pin of a comparator U1A and a negative phase input pin of the comparator U1B, wires between the resistor R18 and the resistor R19 are sequentially connected with a resistor R23, a diode D6 and a capacitor C10 through wires, the other end of the resistor R23 is connected with a resistor R27, the other end of the resistor R27 is connected with a grounding end through wires, the other end of the diode D6 is connected with a protection grounding end through wires, the other end of the capacitor C10 is connected with a capacitor C11 through wires between the magnetic bead FB3 and the comparison circuit, and the other end of the capacitor C11 is connected with the grounding end through wires.
The comparison circuit is used for triggering the MCU controller to interrupt and then starting AD sampling when a lightning current signal arrives.
As shown in fig. 4-5, the comparison circuit comprises positive and negative signal paths, wherein the first path of circuit comprises a comparator U1A, a positive phase input pin of the comparator U1A is connected with an output end of a resistor R12, a resistor R5 and a resistor R11 are sequentially connected in series with a negative phase input pin of the comparator U1A, the other end of the resistor R11 is connected with a grounding end through a wire, a resistor R6 and a resistor R8 are sequentially connected with a wire between the comparator U1A and the resistor R5 through wires, the other end of the resistor R6 is connected with a positive phase input pin of the comparator U1A, the other end of the resistor R8 is connected with a resistor R7, the other end of the resistor R7 is connected with a voltage reference, a capacitor C16 is also connected with a wire between the resistor R7 and the voltage reference through a wire, and the other end of the capacitor C16 is connected with the grounding end through a wire;
The positive side pin of the comparator U1A is connected with a protection grounding end through a wire, the negative side pin of the comparator U1A is connected with a power supply, the wire connected with the power supply through the wire is also connected with a capacitor C17, the other end of the capacitor C17 is connected with the grounding end through the wire, the pin of the output end of the comparator U1A is sequentially connected with a resistor R10 and a magnetic bead FB2 in series through the wire, the other end of the magnetic bead FB2 is connected with an MCU controller, the wire between the comparator U1A and the resistor R10 is sequentially connected with a resistor R9, a diode D1, a diode D2 and a capacitor C19 through the wire, the other ends of the resistor R9 are connected with the wire between the capacitor C17 and the comparator U1A, the other ends of the diode D1 and the capacitor C19 are respectively connected with the grounding end through the wire, the other ends of the diode D2 are connected with the protection grounding end through the wire, the wire connected with a capacitor C18 through the wire, and the other end of the capacitor C18 is connected with the grounding end through the wire;
the second circuit of the comparison circuit comprises a comparator U1B, wherein a negative phase input pin of the comparator U1B is connected with the output end of a resistor R12, a positive phase input pin of the comparator U1B is sequentially connected with a resistor R32 and a resistor R31 in series, the other end of the resistor R31 is connected with a grounding end through a wire, a resistor R35 and a resistor R34 are sequentially connected on the wire between the comparator U1B and the resistor R32 through wires, the other end of the resistor R35 is connected with the negative phase input pin of the comparator U1B, the other end of the resistor R34 is connected with a resistor R36, and the other end of the resistor R36 is connected with a voltage reference;
The positive side pin and the negative side pin of the comparator U1B share a power supply pin with U1A respectively, the output end pin of the comparator U1B is sequentially connected with a resistor R30 and a magnetic bead FB4 in series through wires, the other end of the magnetic bead FB4 is connected with an MCU controller, a resistor R29, a diode D7, a diode D8 and a capacitor C15 are sequentially connected to the wires between the comparator U1B and the resistor R30 through wires, the other end of the resistor R29 is connected with a power supply, the other ends of the diode D7 and the capacitor C15 are respectively connected with a grounding end through wires, the other end of the diode D8 is connected with a protection grounding end through wires, a capacitor C14 is also connected to the wires between the magnetic bead FB4 and the MCU controller through wires, and the other end of the capacitor C14 is connected with the grounding end through wires.
The lightning acquisition circuit captures lightning current signals through a lightning current sensor, the lightning current sensor acquires voltage signals through electromagnetic induction, and the polarity of induced voltage is determined by the current flow direction on a lightning current discharging channel and the installation direction of the lightning current sensor.
The intelligent lightning grade protection method utilizes the intelligent lightning grade protection device, and the specific method is as follows:
the lightning current sensor in the lightning acquisition circuit captures a lightning current signal through the acquisition body system, performs smooth filtering processing through the integral filtering circuit in the processing circuit, then enters the voltage follower circuit and the voltage dividing circuit to process the positive and negative polarity signal into a signal which can be acquired by the AD sampling circuit, and simultaneously triggers the controller to start AD sampling through the comparison circuit to realize AD sampling on the signal conditioned by the voltage follower circuit and the voltage dividing circuit, and then reduces the lightning current through an algorithm to obtain parameters such as peak current, maximum voltage and the like;
According to the peak current and the maximum voltage, the control system selects a protection network through an electronic switch, the protection grid units adopt a modularized design, and one or more protection networks can be combined for use through calculation, so that the lightning protection requirements are met;
After protection, the residual voltage and the residual current are displayed through the display, so that the protection effect can be more intuitively seen.
The intelligent lightning grade protection device can instantly collect transient induction lightning energy, convert the lightning energy into parameters such as current and voltage, automatically match corresponding effective protection circuits from the protection circuit matrix grid cells, and realize intelligent lightning grade protection function by combining one-stage or even multi-stage protection cell grids. The device can realize the instantaneous acquisition of parameters such as lightning waveform, voltage, current and the like at the front end, and automatically adapt to a protection circuit according to the acquired data so as to achieve the optimal protection effect, and is mainly used for solving the application protection scene of uncertain induction lightning energy. The device has the functions of lightning energy collection, parameter display, automatic adaptation protection circuit, protection grid optimization, protection effect display, data storage, wireless transmission and the like.
Example 1
In the embodiment, the MCU controller selects stm32f407, the stm32f407 has more peripheral devices, the resources are rich, the main frequency speed is up to 168M, the response speed is enough, the MCU controller is very suitable for being applied to lightning current monitoring systems, SRAM with 192KB and FLASH with 1024KB are enough to meet variable requirements and code space requirements in embedded software, 12 16-bit timers and 2 32-bit timers are enough to meet the requirements of multiple timings, 2 DMA controllers (16 channels in total) improve the read-write speed in peripheral registers, 6 serial ports are enough to meet debugging and data interaction of a communication module, 2 SPIs are used for reading and writing FLASH memories, 3 12-bit ADCs are just applied to acquisition and conversion of three-way lightning signals, 1 RTC (with calendar function) is used for realizing clock recording, 1 SDIO interface is used for reading and writing lightning data, 112 general IO ports are used for controlling and monitoring other circuits, and the like.
Since the internal AD sampling of stm32 can only collect positive voltage, the voltage signal output by the integrating filter circuit needs to be conditioned by the processing circuit.
As shown in fig. 3, a dc bias voltage of 2.5V is applied to the right end of the coupling capacitor (i.e., capacitor C12) to raise the reference potential of the signal to 2.5V, which can be understood as raising the reference of the positive and negative voltage signals from 0V to 2.5V, so that the negative polarity signal is converted into the positive polarity signal, the voltage range of the negative polarity signal is 2.5-0V, the voltage range of the positive polarity signal is 2.5-5V, and then the positive polarity signal is buffered by the voltage follower circuit.
The voltage follower circuit reduces the signal amplitude to 0-3.2V through voltage division at the later stage, meanwhile, the signal reference voltage is reduced to 1.6V, the voltage range of the negative polarity signal is 0-1.6V, and the voltage range of the positive polarity signal is 1.6-3.2V, and then the signal is input into the AD for acquisition conversion.
As shown in fig. 4-5, the output signals of the operational amplifier are simultaneously connected to the comparison circuit, the comparator is divided into two paths, the reference voltage of the first path of comparator is set to be greater than 2.5V, such as 2.520V, the output of the comparator is low level when no signal exists, the output of the comparator can be high level when positive polarity signals greater than 20mV arrive, the reference voltage of the second path of comparator is set to be less than 2.5V, such as 2.480V, the output of the comparator is low level when no signal exists, and the output of the comparator can be high level when negative polarity signals greater than 20mV arrive. The signal exceeding a certain amplitude comes, and the rising edge of the output of the comparator can trigger the MCU controller to start AD sampling.
The AD sampling circuit uses an AD converter in the stm32f407, 3 12-bit ADCs are arranged in the stm32f407, the highest running frequency of the ADCs can reach 36M, three paths of AD can be simultaneously acquired by utilizing the triple rule synchronization function of the AD sampling circuit, and the sampling rate is actually measured to be about 1MSPS, so that the signals of three paths of lightning current sensors can be simultaneously acquired.
The resistor uses 0.01% resistor, and the power supply and the voltage division power supply of the operational amplifier and the comparator use precise power supply.
Example 2
The intelligent lightning grade protection device comprises a lightning acquisition circuit, wherein the lightning acquisition circuit is connected with a processing circuit in a wired connection mode, the processing circuit is connected with an MCU controller in a wired connection mode, the MCU controller is respectively connected with a control matrix circuit and a display circuit in a wired connection mode, and the control matrix circuit is connected with a protection grid unit in a wired connection mode;
The lightning protection device further comprises a power supply circuit which is electrically connected with the lightning acquisition circuit, the processing circuit, the MCU controller, the control matrix circuit, the protection grid unit and the display circuit respectively.
The processing circuit comprises an integral filter circuit, the input end of the integral filter circuit is connected with the output end of the lightning acquisition circuit in a wired mode, the output end of the integral filter circuit is connected with a signal conditioning circuit in a wired mode, the signal conditioning circuit is respectively connected with a comparison circuit and an AD sampling circuit in a wired mode, the comparison circuit is connected with the MCU controller, and the AD sampling circuit is integrated in the MCU controller.
The signal conditioning circuit comprises a voltage following circuit and a voltage dividing circuit, wherein the input end of the voltage following circuit is connected with the output end of the integrating filter circuit in a wired connection mode, the output end of the voltage following circuit is connected with the input end of the voltage dividing circuit, and the output end of the voltage dividing circuit is respectively connected with the input ends of the comparison circuit and the AD sampling circuit;
The lightning current sensor captures lightning current signals through electromagnetic induction, firstly carries out smooth filtering treatment through an integral filtering circuit, then enters a signal conditioning circuit to process positive and negative polarity signals into signals which can be acquired by AD, and meanwhile triggers an MCU controller to start AD sampling through a comparison circuit to realize AD sampling of the conditioned signals, and then reduces lightning current through an algorithm to obtain peak current, lightning current polarity and lightning stroke times.
Example 3
The intelligent lightning grade protection method utilizes the intelligent lightning grade protection device, and the specific method is as follows:
the lightning current sensor in the lightning acquisition circuit captures a lightning current signal through the acquisition body system, performs smooth filtering processing through the integral filtering circuit in the processing circuit, then enters the voltage follower circuit and the voltage dividing circuit to process the positive and negative polarity signal into a signal which can be acquired by the AD sampling circuit, and simultaneously triggers the controller to start AD sampling through the comparison circuit to realize AD sampling on the signal conditioned by the voltage follower circuit and the voltage dividing circuit, and then reduces the lightning current through an algorithm to obtain parameters such as peak current, maximum voltage and the like;
According to the peak current and the maximum voltage, the control system selects a protection network through an electronic switch, the protection grid units adopt a modularized design, and one or more protection networks can be combined for use through calculation, so that the lightning protection requirements are met;
After protection, the residual voltage and the residual current are displayed through the display, so that the protection effect can be more intuitively seen.
Claims (8)
1. The intelligent lightning grade protection device is characterized by comprising a lightning acquisition circuit, wherein the lightning acquisition circuit is connected with a processing circuit in a wired connection mode, the processing circuit is connected with an MCU controller in a wired connection mode, the MCU controller is respectively connected with a control matrix circuit and a display circuit in a wired connection mode, and the control matrix circuit is connected with a protection grid unit in a wired connection mode;
The lightning protection device further comprises a power supply circuit which is electrically connected with the lightning acquisition circuit, the processing circuit, the MCU controller, the control matrix circuit, the protection grid unit and the display circuit respectively.
2. The intelligent lightning grade protection device according to claim 1, wherein the processing circuit comprises an integral filter circuit, the input end of the integral filter circuit is connected with the output end of the lightning acquisition circuit in a wired manner, the output end of the integral filter circuit is connected with a signal conditioning circuit in a wired manner, the signal conditioning circuit is respectively connected with a comparison circuit and an AD sampling circuit in a wired manner, the comparison circuit is connected with an MCU controller, and the AD sampling circuit is integrated in the MCU controller.
3. The intelligent lightning grade protection device according to claim 2, wherein the signal conditioning circuit comprises a voltage follower circuit and a voltage divider circuit, the input end of the voltage follower circuit is connected with the output end of the integrating filter circuit in a wired connection manner, the output end of the voltage follower circuit is connected with the input end of the voltage divider circuit, and the output end of the voltage divider circuit is respectively connected with the input ends of the comparison circuit and the AD sampling circuit.
4. The intelligent lightning grade protection device according to claim 3, wherein the integrating filter circuit comprises two main wires, the output ends of the two main wires are connected with the input end of the signal conditioning circuit, a resistor R1, an inductor L2, an inductor L3 and an inductor L4 are sequentially connected in series from the lightning acquisition circuit to the signal conditioning circuit, the output end of the inductor L4 is connected with the input end of the signal conditioning circuit, a diode D4 is further connected with the wires between the lightning acquisition circuit and the resistor R1 through the wires, the output end of the diode D4 is connected with a protection grounding end through the wires, and the resistor R1 is connected with a resistor R2 in parallel;
A resistor R3, a resistor R4, a TVS diode G1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and a capacitor C9 are sequentially connected in parallel between the lightning acquisition circuit and the signal conditioning circuit, one end of the resistor R3, the resistor R4, the TVS diode G1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 are all connected to a second main conductor between the lightning acquisition circuit and the signal conditioning circuit, the other end of the resistor R3 and the resistor R4 are connected to a conductor between the diode D4 and the resistor R1, the other end of the TVS diode G1, the capacitor C1 and the other end of the capacitor C2 are respectively connected to a conductor between the resistor R1 and the inductor L1, the other end of the capacitor C3 is connected to a conductor between the inductor L1 and the inductor L2, the other end of the capacitor C5 is connected to a second main conductor between the inductor L3 and the inductor C7, the other end of the capacitor C4 is connected to the main conductor between the capacitor C4 and the main conductor 3 and the capacitor C4, and the other end of the capacitor C4 is connected to the conductor between the main conductor;
The second main wire is positioned on the wire between the resistor R3 and the lightning acquisition circuit and is also connected with a diode D5 through the wire, and the other end of the diode D5 is connected with a protection grounding end through the wire.
5. The intelligent lightning level protection device according to claim 4, wherein the voltage follower circuit comprises a comparator U2B, a positive phase input pin of the comparator U2B is connected with an output end of an integral filter circuit, a positive side input pin of the comparator U2B is connected with a protection grounding end, a negative side input pin of the comparator U2B is connected with a power supply through a wire, the wire of the power supply is connected with a capacitor C13 through a wire, the other end of the capacitor C13 is connected with a grounding end through a wire, a negative phase input pin of the comparator U2B is connected with a pin of the output end of the comparator U2B through a wire, a resistor R14, a resistor R15, a capacitor C12 and a resistor R20 are sequentially connected in series on the wire between the integral filter circuit and the comparator U2B, a resistor R21 is further connected on the wire between the resistor R15 and the capacitor C12 through a wire, the other end of the resistor R21 is connected with a resistor R26, the other end of the resistor R26 is further connected with the grounding end through a wire, the other end of the resistor R12 and the other end of the resistor R20 are sequentially connected with a reference voltage R24 through a wire and the resistor R24;
The voltage dividing circuit comprises a resistor R16, a resistor R17, a resistor R18, a resistor R19 and a magnetic bead FB3 which are sequentially connected in series, wherein the resistor R16 is connected with an output end pin of a comparator U2B, the other end of the magnetic bead FB3 is connected with an adopted interface of an AD sampling circuit in the MCU controller, the resistor R16 is connected with the resistor R17 through a wire, the other end of the resistor R12 is connected with a positive phase input pin of a comparator U1A and a negative phase input pin of the comparator U1B, the wire between the resistor R18 and the resistor R19 is further connected with a resistor R23, a diode D6 and a capacitor C10 through wires, the other end of the resistor R23 is connected with a resistor R27, the other end of the resistor R27 is connected with a grounding end through a wire, the other end of the diode D6 is connected with a protection grounding end through a wire, the other end of the capacitor C10 is connected with the grounding end through a wire, the wire between the magnetic bead FB3 and the comparison circuit is also connected with a capacitor C11 through a wire, and the other end of the capacitor C11 is connected with the grounding end through a wire.
6. The intelligent lightning level protection device according to claim 5, wherein the comparison circuit comprises two paths, wherein a first path of circuit comprises a comparator U1A, a positive phase input pin of the comparator U1A is connected with an output end of a resistor R12, a resistor R5 and a resistor R11 are sequentially connected in series with a negative phase input pin of the comparator U1A, the other end of the resistor R11 is connected with a grounding end through a wire, a resistor R6 and a resistor R8 are sequentially connected with a wire between the comparator U1A and the resistor R5, the other end of the resistor R6 is connected with a positive phase input pin of the comparator U1A, the other end of the resistor R8 is connected with a resistor R7, the other end of the resistor R7 is connected with a voltage reference, a capacitor C16 is further connected with a wire between the resistor R7 and the voltage reference, and the other end of the capacitor C16 is connected with the grounding end through a wire;
The positive side pin of the comparator U1A is connected with a protection grounding end through a wire, the negative side pin of the comparator U1A is connected with a power supply, a wire connected with the negative side pin of the comparator U1A is also connected with a capacitor C17 through a wire, the other end of the capacitor C17 is connected with the grounding end through a wire, the pin of the output end of the comparator U1A is sequentially connected with a resistor R10 and a magnetic bead FB2 in series through a wire, the other end of the magnetic bead FB2 is connected with an MCU controller, the wire between the comparator U1A and the resistor R10 is sequentially connected with a resistor R9, a diode D1, a diode D2 and a capacitor C19 through wires, the other ends of the diode D1 and the capacitor C19 are respectively connected with the grounding end through wires, the other end of the diode D2 is connected with the protection grounding end through wires, the wire connected with a capacitor C18 through wires between the magnetic bead FB2 and the MCU controller, and the other end of the capacitor C18 is connected with the grounding end through wires;
The second circuit of the comparison circuit comprises a comparator U1B, wherein a negative phase input pin of the comparator U1B is connected with an output end of a resistor R12, a positive phase input pin of the comparator U1B is sequentially connected with a resistor R32 and a resistor R31 in series, the other end of the resistor R31 is connected with a grounding end through a wire, a resistor R35 and a resistor R34 are sequentially connected on the wire between the comparator U1B and the resistor R32 through wires, the other end of the resistor R35 is connected with a negative phase input pin of the comparator U1B, the other end of the resistor R34 is connected with a resistor R36, and the other end of the resistor R36 is connected with a voltage reference;
The positive side pin and the negative side pin of the comparator U1B share a power supply pin with U1A respectively, a resistor R30 and a magnetic bead FB4 are sequentially connected in series through a wire, the other end of the magnetic bead FB4 is connected with an MCU controller, a resistor R29, a diode D7, a diode D8 and a capacitor C15 are sequentially connected to the wire between the comparator U1B and the resistor R30 through wires, the other end of the resistor R29 is connected with a power supply, the other ends of the diode D7 and the capacitor C15 are respectively connected with a grounding end through wires, the other end of the diode D8 is connected with a protection grounding end through wires, a capacitor C14 is also connected to the wire between the magnetic bead FB4 and the MCU controller through wires, and the other end of the capacitor C14 is connected with the grounding end through wires.
7. The intelligent lightning grade protection apparatus of claim 1, wherein the lightning acquisition circuit captures lightning current signals through a lightning current sensor.
8. The intelligent lightning grade protection method is characterized by using the intelligent lightning grade protection device according to any one of claims 1-7, and comprises the following steps:
the lightning current sensor in the lightning acquisition circuit captures a lightning current signal through the acquisition body system, performs smooth filtering processing through the integral filtering circuit in the processing circuit, then enters the voltage follower circuit and the voltage dividing circuit to process the positive and negative polarity signal into a signal which can be acquired by the AD sampling circuit, and simultaneously triggers the controller to start AD sampling through the comparison circuit to realize AD sampling on the signal conditioned by the voltage follower circuit and the voltage dividing circuit, and then reduces the lightning current through an algorithm to obtain parameters such as peak current, maximum voltage and the like;
According to the peak current and the maximum voltage, the control system selects a protection network through an electronic switch, the protection grid units adopt a modularized design, and one or more protection networks can be combined for use through calculation, so that the lightning protection requirements are met;
After protection, the residual voltage and the residual current are displayed through a display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411598720.2A CN119134249B (en) | 2024-11-11 | 2024-11-11 | Adaptive lightning level protection device and lightning protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411598720.2A CN119134249B (en) | 2024-11-11 | 2024-11-11 | Adaptive lightning level protection device and lightning protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119134249A true CN119134249A (en) | 2024-12-13 |
| CN119134249B CN119134249B (en) | 2025-02-25 |
Family
ID=93763965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411598720.2A Active CN119134249B (en) | 2024-11-11 | 2024-11-11 | Adaptive lightning level protection device and lightning protection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119134249B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030147192A1 (en) * | 2002-02-06 | 2003-08-07 | Glenn Crocker | Apparatus for protecting electronic equipment by detecting thunder |
| US20060120005A1 (en) * | 2004-11-15 | 2006-06-08 | Van Sickle Robert J | Transient voltage surge suppression systems |
| EP2265961A2 (en) * | 2008-03-07 | 2010-12-29 | Insensys Limited | Lightning detection |
| CN203949966U (en) * | 2014-06-30 | 2014-11-19 | 深圳市科威电子测试有限公司 | Lightning current acquisition circuit |
| CN107342580A (en) * | 2016-12-23 | 2017-11-10 | 深圳市深波电子有限公司 | A kind of Anti-surging automatic control protecting device |
| CN206650432U (en) * | 2017-04-26 | 2017-11-17 | 西安航空学院 | A kind of intelligent building thunder-lightning Surge Protector |
| KR102031518B1 (en) * | 2019-04-24 | 2019-10-11 | 이계광 | Lightning monitoring method |
| CN212586450U (en) * | 2019-11-29 | 2021-02-23 | 深圳远征技术有限公司 | Lightning current monitoring circuit |
| CN213091734U (en) * | 2020-08-25 | 2021-04-30 | 西安爱邦电磁技术有限责任公司 | Thunder and lightning full waveform acquisition circuit and equipment |
| CN116626376A (en) * | 2023-06-29 | 2023-08-22 | 沈阳铁路信号有限责任公司 | Low-power-consumption lightning current waveform acquisition circuit and method |
-
2024
- 2024-11-11 CN CN202411598720.2A patent/CN119134249B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030147192A1 (en) * | 2002-02-06 | 2003-08-07 | Glenn Crocker | Apparatus for protecting electronic equipment by detecting thunder |
| US20060120005A1 (en) * | 2004-11-15 | 2006-06-08 | Van Sickle Robert J | Transient voltage surge suppression systems |
| EP2265961A2 (en) * | 2008-03-07 | 2010-12-29 | Insensys Limited | Lightning detection |
| CN203949966U (en) * | 2014-06-30 | 2014-11-19 | 深圳市科威电子测试有限公司 | Lightning current acquisition circuit |
| CN107342580A (en) * | 2016-12-23 | 2017-11-10 | 深圳市深波电子有限公司 | A kind of Anti-surging automatic control protecting device |
| CN206650432U (en) * | 2017-04-26 | 2017-11-17 | 西安航空学院 | A kind of intelligent building thunder-lightning Surge Protector |
| KR102031518B1 (en) * | 2019-04-24 | 2019-10-11 | 이계광 | Lightning monitoring method |
| CN212586450U (en) * | 2019-11-29 | 2021-02-23 | 深圳远征技术有限公司 | Lightning current monitoring circuit |
| CN213091734U (en) * | 2020-08-25 | 2021-04-30 | 西安爱邦电磁技术有限责任公司 | Thunder and lightning full waveform acquisition circuit and equipment |
| CN116626376A (en) * | 2023-06-29 | 2023-08-22 | 沈阳铁路信号有限责任公司 | Low-power-consumption lightning current waveform acquisition circuit and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119134249B (en) | 2025-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201780357U (en) | Testing device for metal oxide semiconductor field effect transistors | |
| CN109932619B (en) | Secondary signal collector of electronic sensor of power distribution network | |
| CN102981041A (en) | A single battery monitoring system | |
| CN110441593A (en) | A kind of Rogowski coil current signal acquisition system and acquisition method | |
| CN114002541A (en) | Electronic intelligent feeder terminal and method for judging single-phase earth fault thereof | |
| CN104090154A (en) | Leak current detection module for train power supply monitoring subsystem | |
| CN119134249B (en) | Adaptive lightning level protection device and lightning protection method | |
| WO2012083720A1 (en) | Real-time online monitoring devices for electromagnetic environment | |
| CN202486206U (en) | Multi-channel Data Acquisition System of Transmission Line Based on Electronic Transformer | |
| CN208046212U (en) | A kind of mining high current intrinsic safety electric source | |
| CN206698023U (en) | A kind of one or two fusion FTU devices of controller switching equipment | |
| CN203630318U (en) | Test system for power system switching power supply module | |
| CN204925317U (en) | A distribution network automation terminal for quick fault localization | |
| CN209133975U (en) | A switchgear state comprehensive indicator | |
| CN203798903U (en) | Intelligent electric energy meter | |
| CN112104109A (en) | Controller circuit for wireless power transmission system | |
| CN208674862U (en) | A kind of microcomputer motor protective monitoring device of tape jam recording function | |
| CN103516050A (en) | Information collector of distribution network switching station | |
| CN202002968U (en) | Electronic lightning stroke times collecting system of lightning arrester | |
| CN2663996Y (en) | Transmission line insulator flashover positioning device | |
| CN103325185B (en) | A kind of electric motor intelligent charging pile of adjustable output voltage | |
| CN203537066U (en) | Information collector of distribution network switching station | |
| CN204858594U (en) | A kind of gap type power line energy harvesting method | |
| CN209112119U (en) | Digital diffluence device based on LIN bus | |
| CN111076954A (en) | Train pipe wind pressure detection device based on wireless remote transmission technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |