CN215449412U - Passive lightning current test recording device - Google Patents
Passive lightning current test recording device Download PDFInfo
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- CN215449412U CN215449412U CN202121532420.6U CN202121532420U CN215449412U CN 215449412 U CN215449412 U CN 215449412U CN 202121532420 U CN202121532420 U CN 202121532420U CN 215449412 U CN215449412 U CN 215449412U
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Abstract
The utility model provides a passive lightning current test recording device, which comprises a shell, wherein a pulse induction receiving coil for collecting lightning impulse, an induction copper conductor and a pulse signal processing circuit are arranged in the shell, a magnetic induction counting display is arranged on the surface of the shell, the pulse induction receiving coil is wound on the induction copper conductor, a signal output line of the pulse induction receiving coil is connected to an input end of the pulse signal processing circuit, the pulse signal processing circuit is used for amplifying received lightning pulse signals and outputting the signals and triggering the magnetic induction counting display, and the amplified lightning pulse signals are counted and decoded by the magnetic induction counting display and then are displayed through the jumping of a display screen. The lightning pulse counting device is reasonable in structure, flexible and convenient to install, small in occupied space, free of power supply, capable of conducting induction counting through lightning pulses, and capable of accurately judging the counting function of the lightning pulses.
Description
Technical Field
The utility model relates to the technical field of lightning protection, in particular to a passive lightning current testing and recording device for monitoring the number of lightning current to ground discharge in a lightning protection system.
Background
Lightning strikes include direct strikes, proximity strikes, and long-range strikes, which produce pulse currents and pulse voltages of magnitudes and energies that are particularly dangerous for the system being protected. When a direct lightning strike or an adjacent lightning strike occurs, a high potential is generated at the position due to the existence of the ground resistance, so that a high potential difference exists between the position and the far end, and the potential difference is a huge threat to the electrical equipment of the building. With the stricter and finer lightning protection requirements of relevant equipment, particularly the influence of direct lightning on a power supply system, the installation of over current on a discharge line of a direct lightning combined power surge protector becomes one of important links of the modern lightning protection technology, and the requirements on compact direct lightning resistant combined lightning protectors are stricter in the continuous improvement of various modern processes.
Therefore, the lightning counter (IC 05) is taken as a monitoring device of the power supply surge protector, and real-time reference is made for monitoring lightning distribution and counting the lightning discharging times of the power supply surge protector. Due to the difficulties of rain protection and battery replacement in many outdoor applications, it is necessary to design a lightning counter that is capable of detection and water protection without a power source.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a passive lightning current testing and recording device with a function of accurately judging lightning pulse counting.
In order to achieve the main purpose, the passive lightning current testing and recording device provided by the utility model comprises a shell, wherein a pulse induction receiving coil for collecting lightning impulse, an induction copper conductor and a pulse signal processing circuit are arranged in the shell, a magnetic induction counting display is arranged on the surface of the shell, the pulse induction receiving coil is wound on the induction copper conductor, a signal output line of the pulse induction receiving coil is connected to an input end of the pulse signal processing circuit, the pulse signal processing circuit is used for amplifying a received lightning pulse signal and outputting the amplified lightning pulse signal and triggering the magnetic induction counting display, and the amplified lightning pulse signal is counted and decoded by the magnetic induction counting display and then displayed by a display screen in a jumping mode.
In a further scheme, a voltage limiting circuit is connected between a signal output line of the pulse induction receiving coil and an input end of the pulse signal processing circuit.
In a further aspect, the voltage limiting circuit includes a voltage dependent resistor and a transient suppression diode, and the voltage dependent resistor is connected in parallel with the transient suppression diode.
In a further scheme, the pulse signal processing circuit comprises a first resistor, a rectifier bridge, a second resistor and a first capacitor, wherein the first end of the rectifier bridge is connected with one end of the first resistor, the second end of the rectifier bridge is connected with the other end of the first resistor, the third end of the rectifier bridge is connected with one end of the second resistor, the fourth end of the rectifier bridge is connected with the other end of the second resistor and then grounded, the second resistor is connected with the first capacitor in parallel, and the first capacitor is connected to the magnetic induction counting display.
In a further scheme, the shell is a waterproof shell and is connected in series or in parallel on a circuit through a fastening electric connecting piece.
In a further scheme, the magnetic induction counting display comprises a counting module, a zero clearing circuit and a display screen, wherein the counting module is respectively connected with the pulse signal processing circuit, the zero clearing circuit and the display screen.
Therefore, the passive waterproof lightning counter capable of accurately judging the lightning pulse counting function is reasonable in structure, flexible and convenient to install, small in occupied space, free of power supply and capable of conducting induction counting only by means of the lightning pulses.
In addition, carry out waterproof design to the casing simultaneously, through the waterproof housing that sets up little volume, all components are packed into in the waterproof housing to can protect the device, can avoid the device to expose for a long time outside, the life of effectual increase device.
Therefore, the utility model has the advantages of simple structure, convenient use, realization of modularization, high reliability, strong processing function, high speed, low voltage, low power consumption, strong control function, strong environmental adaptability, flexible expansion, miniaturization and the like, is widely applied to instruments and meters, and is combined with an induction coil sensor to realize the quantitative measurement of lightning current. The protection monitor is intelligentized and miniaturized by adopting the singlechip for control, and has stronger functions and lower energy consumption compared with an electronic or digital circuit.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a passive lightning current test recording apparatus according to the present invention.
Fig. 2 is a schematic structural diagram of another angle of an embodiment of a passive lightning current testing and recording apparatus according to the utility model.
Fig. 3 is a schematic circuit diagram of an embodiment of a passive lightning current test recording apparatus according to the utility model.
Fig. 4 is a schematic structural diagram of a passive lightning current testing and recording device according to an embodiment of the present invention, in which a housing is connected in series with a line.
Fig. 5 is a schematic structural diagram of a case connected in parallel on a line in an embodiment of a passive lightning current testing and recording apparatus according to the utility model.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.
Referring to fig. 1 to 3, the passive lightning current testing and recording device of the present invention includes a casing 10, a pulse induction receiving coil 1 for collecting lightning impulse is disposed in the casing 10, an induction copper conductor 2, and a pulse signal processing circuit 3, wherein a magnetic induction counting display 4 is disposed on the surface of the casing 10, the pulse induction receiving coil 1 is wound on the induction copper conductor 2, a signal output line of the pulse induction receiving coil 1 is connected to an input end of the pulse signal processing circuit 3, the pulse signal processing circuit 3 is configured to amplify a received lightning pulse signal and then output and trigger the magnetic induction counting display 4, and the amplified lightning pulse signal is counted and decoded by the magnetic induction counting display 4 and then displayed by a display screen. It can be seen that the pulse induction receiving coil 1 is surrounded on the induction copper conductor 2, and the signal output line of the pulse induction receiving coil 1 is connected to the input end of the pulse signal processing circuit 3; the pulse signal processing circuit 3 amplifies the received signal and triggers the magnetic induction counting display 4 through the circuit. And finally, jumping is displayed on a counting display.
In the present embodiment, a voltage-limiting circuit is also connected between the signal output line of the pulse induction receiving coil 1 and the input terminal of the pulse signal processing circuit 3.
The voltage limiting circuit comprises a voltage dependent resistor MOV and a transient suppression diode TVS, and the voltage dependent resistor MOV is connected with the transient suppression diode TVS in parallel. The transient suppressor diode TVS of this embodiment is a high-performance protection device in the form of a diode, and when two poles of the transient suppressor diode TVS are impacted by high energy of reverse transient, it can change the high impedance between the two poles into low impedance at a speed of 10 on the order of minus 12 seconds, and absorb the surge power up to several thousands of watts, so that the voltage between the two poles is clamped at a predetermined value, thereby effectively protecting the precision components in the electronic circuit from various surge pulses.
In this embodiment, the pulse signal processing circuit 3 includes a resistor R1, a rectifier bridge D1, a resistor R2, and a capacitor C1, a first end of the rectifier bridge D1 is connected to one end of the resistor R1, a second end of the rectifier bridge D1 is connected to the other end of the resistor R1, a third end of the rectifier bridge D1 is connected to one end of a resistor R2, a fourth end of the rectifier bridge D1 is connected to the other end of the resistor R2 and then grounded, the resistor R2 is connected in parallel to the capacitor C1, and the capacitor C1 is connected to the magnetic induction counting display 4.
Wherein, the shell 10 is a waterproof shell, and is connected in series or in parallel on a line by fastening the electrical connector 20, as shown in fig. 4 and 5, when in series connection use, the lightning pulse completely flows through the passive lightning current test recording device and then to the ground; when the passive lightning current testing and recording device is used in parallel, the passive lightning current testing and recording device is close to a lightning current pulse in parallel, the lightning pulse is directly connected to the ground, and the passive lightning current testing and recording device receives signals through a close-type inductor.
The back of the shell 10 is provided with a mounting hole, when the equipment needs to be fixed, the fastening stud 21 penetrates through the mounting hole of the fastening electrical connector 20 and the mounting hole of the shell 10 to be fixedly mounted, and the problem that the equipment falls off in the fixing process can be effectively prevented.
The protection grade of the waterproof housing of the embodiment is IP 65.
In this embodiment, the magnetic induction counting display 4 includes a counting module, a zero clearing circuit and a display screen, and the counting module is connected with the pulse signal processing circuit 3, the zero clearing circuit and the display screen respectively. The counting module is a module circuit which takes a counting chip as a core and is internally provided with auxiliary circuits such as a voltage boosting and stabilizing circuit, an oscillating circuit and the like.
Specifically, the counting module is provided with a counting signal end, a zero clearing end and a display output end, the counting signal end of the counting module is connected with the output end of the pulse signal processing circuit 3, the zero clearing circuit is connected with the zero clearing end of the counting module, and the display screen is connected with the display output end of the counting module. Therefore, the pulse signal processing circuit 3 is added between the pulse induction receiving coil 1 and the counting signal end of the counting module, so that interference signals can be filtered, and only normal magnetic induction signals enter the counting signal end of the counting module, thereby ensuring the accuracy, reliability and stability of counting and having wider application and installation fields.
Therefore, the passive waterproof lightning counter capable of accurately judging the lightning pulse counting function is reasonable in structure, flexible and convenient to install, small in occupied space, free of power supply and capable of conducting induction counting only by means of the lightning pulses.
In addition, carry out waterproof design to casing 10 simultaneously, through setting up the waterproof casing of small volume, all components are packed into in the waterproof casing to can protect the device, can avoid the device to expose for a long time outside, the effectual life who increases the device.
Therefore, the utility model has the advantages of simple structure, convenient use, realization of modularization, high reliability, strong processing function, high speed, low voltage, low power consumption, strong control function, strong environmental adaptability, flexible expansion, miniaturization and the like, is widely applied to instruments and meters, and is combined with an induction coil sensor to realize the quantitative measurement of lightning current. The protection monitor is intelligentized and miniaturized by adopting the singlechip for control, and has stronger functions and lower energy consumption compared with an electronic or digital circuit.
It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made to the present invention by using the design concept also fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a passive lightning current test recording device, its includes the casing, its characterized in that:
be equipped with in the casing and carry out the pulse induction receiving coil who gathers to lightning impulse, the response copper conductor, pulse signal processing circuit the casing surface is equipped with magnetic induction count display, the winding of pulse induction receiving coil is in on the response copper conductor, the signal output line of pulse induction receiving coil is connected to pulse signal processing circuit's input, pulse signal processing circuit is used for carrying out the output and triggering after enlargiing the processing to the lightning pulse signal who receives magnetic induction count display, by magnetic induction count display counts the decoding back to the lightning pulse signal after the processing of enlarging and beats through the display screen and show.
2. A passive lightning current test recording device according to claim 1, characterised in that:
and a voltage limiting circuit is connected between the signal output line of the pulse induction receiving coil and the input end of the pulse signal processing circuit.
3. A passive lightning current test recording device according to claim 2, characterised in that:
the voltage limiting circuit comprises a voltage dependent resistor and a transient suppression diode, and the voltage dependent resistor is connected with the transient suppression diode in parallel.
4. A passive lightning current test recording device according to any one of claims 1 to 3, characterised in that:
pulse signal processing circuit includes first resistance, rectifier bridge, second resistance and first electric capacity, the rectifier bridge first end with first resistance one end is connected, the rectifier bridge second end with the first resistance other end is connected, the rectifier bridge third end with second resistance one end is connected, the rectifier bridge fourth end with the second resistance other end is connected the back ground connection, the second resistance with first electric capacity is parallelly connected, first electric capacity is connected to magnetic induction count display.
5. A passive lightning current test recording device according to any one of claims 1 to 3, characterised in that:
the shell is a waterproof shell and is connected in series or in parallel on a circuit through fastening electric connecting pieces.
6. A passive lightning current test recording device according to any one of claims 1 to 3, characterised in that:
the magnetic induction counting display comprises a counting module, a zero clearing circuit and a display screen, wherein the counting module is respectively connected with the pulse signal processing circuit, the zero clearing circuit and the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532420.6U CN215449412U (en) | 2021-07-06 | 2021-07-06 | Passive lightning current test recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532420.6U CN215449412U (en) | 2021-07-06 | 2021-07-06 | Passive lightning current test recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215449412U true CN215449412U (en) | 2022-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121532420.6U Active CN215449412U (en) | 2021-07-06 | 2021-07-06 | Passive lightning current test recording device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215449412U (en) |
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2021
- 2021-07-06 CN CN202121532420.6U patent/CN215449412U/en active Active
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