CN203858289U - Novel lightning arrester with display of overvoltage and lightning - Google Patents

Novel lightning arrester with display of overvoltage and lightning Download PDF

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Publication number
CN203858289U
CN203858289U CN201420138595.2U CN201420138595U CN203858289U CN 203858289 U CN203858289 U CN 203858289U CN 201420138595 U CN201420138595 U CN 201420138595U CN 203858289 U CN203858289 U CN 203858289U
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CN
China
Prior art keywords
circuit
overvoltage
thunderbolt
lightning arrester
current
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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.)
Expired - Fee Related
Application number
CN201420138595.2U
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Chinese (zh)
Inventor
李争干
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SHAANXI ALRIGHT ELECTRIC CO., LTD.
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李争干
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Priority to CN201420138595.2U priority Critical patent/CN203858289U/en
Application granted granted Critical
Publication of CN203858289U publication Critical patent/CN203858289U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a novel lightning arrester with the display of overvoltage and lightning. The novel lightning arrester comprises a master control circuit part with ATMEGA128-AU as a core, a discharge loop, a measurement current circuit, an RS485 communication circuit, a current sampling circuit, and a buzzer alarm circuit. The lightning arrester induces a current signal through a transformer TA1016-2M, the signal is outputted to the measurement current circuit and current is measured through a detection circuit formed by LM358, the measurement current circuit carries out outputting to the AD0 port of a single chip microcomputer, the single chip microcomputer carries out sampling, and then normal, overvoltage and lightning strike states are displayed through an LCD12864 LCD display. The novel lightning arrester has the advantages that the structure of the novel lightning arrester is simple, lightning strike protection can be carried out and lightning strike and overvoltage can be displayed, the timely adoption of repair and protection measures with pertinence after equipment damage is facilitated.

Description

A kind of Novel lightning arrester that shows overvoltage and thunderbolt
Technical field
The utility model relates to a kind of Novel lightning arrester that shows overvoltage and thunderbolt.
Background technology
Thunder and lightning is natural a kind of spontaneous phenomenon, is the process that energy discharges again after gathering for a long time within the utmost point short time.Damage to crops caused by thunder is divided into direct lightning strike and induction thunder, direct lightning strike comprises to be attacked directly in various artificial buildingss, on nature body, or walk around some barrier and hit the object after barrier, induction thunder refers to the thunderbolt that thunderbolt produces induced overvoltage to the earth on other objects, even if buildings itself does not suffer from direct thunderbolt, but the lightning strike on side also likely causes this buildings to cause superpotential, this superpotential can directly or indirectly arrive above electronic installation by inductive or capacitive couplings, and part lightning current may be sent to earthing device by ground, so very easily cause very large harm, in addition, the conversion operations of the closed and disconnected of circuit, the blocking-up that short-circuit current causes, the switching manipulation of perception or capacitive load etc. causes superpotential, superpotential causes damage in various degree to electronic equipment, many units, family all suffers threat and the invasion and attack of thunder and lightning, make people progressively recognize the importance of lightning protection, thunder resisting equipment is installed, satisfactory lightning rod (band) is installed on buildings, can more effectively prevent the infringement of direct lightning strike, in power distribution circuit, the normal lightning arrester of installing has: valve-type arrester, tube type arrester, Zinc-Oxide Arrester etc., low-voltage distribution system is advocated and is selected low-voltage ZnO lightning arrester, these all lightning protections are after suffering damage, for the source of damage, parts etc. be can not determine, can not take in time maintenance measure, can only investigate one by one, after investigating out, just can keep in repair targetedly, remedy and protect, give like this people's life, work brings very big inconvenience.
Summary of the invention
The purpose of this utility model is to overcome the problem that prior art exists, a kind of Novel lightning arrester that shows overvoltage and thunderbolt is provided, not only simple in structure, and can avoid buildings, electric power facility etc. after suffering damage, blindly to take unaccommodated maintenance measure, lose time, make troubles to people's life, work.
For achieving the above object, the technical solution of the utility model is:
A kind of Novel lightning arrester that shows overvoltage and thunderbolt, comprise that ATMEGA128-AU is main control circuit part, discharge loop, the measurement current circuit of core, RS485 telecommunication circuit, current collection circuit, buzzer alarm circuit, described discharge loop forms by certainly recovering insurance, current transformer, voltage dependent resistor (VDR) and discharge tube; Described measurement display section is by Hall current sensor, switch power module, single-chip microcomputer, hummer and LCDs composition, its special character is: this lightning arrester is by mutual inductor TA1016-2M sensor current signal, output to and measure current circuit and the testing circuit that consists of LM358 is measured electric current, this metering circuit outputs to the AD0 mouth of single-chip microcomputer, after single-chip microcomputer sampling, can show normal, overvoltage, thunderbolt state by LCD12864 LCDs.
Further, described lightning arrester adopts current transformer induction current, to judge that overvoltage is still struck by lightning.
Further, described lightning arrester adopts from recovering insurance, when thunderbolt is later from recovering, without changing insurance.
Further, described lightning arrester adopts the maximum working voltage, the electric current that certainly recover insurance are 250V/10A; Voltage dependent resistor (VDR) model is MYG20K561; Discharge tube model is 2RM600-8B123; Hall current sensor model is TA1016-1M; The model of current transformer is TA1016-2M, and rated operational current is 10A; The model that hummer adopts is SL1I-12CP, and specified operating voltage is 12V; Single-chip microcomputer adopts ATMEGA128; Liquid crystal display adopts LCD12864.
The utility model has the advantages that, simple in structure, not only can lighting protection can also show thunderbolt and overvoltage, be convenient to can to take in time to keep in repair targetedly after device damage, safeguard procedures.
Brief description of the drawings
Fig. 1 is block scheme of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model discharge loop;
Fig. 3 is the circuit theory diagrams that the utility model is measured current circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Under normal condition, the voltage dependent resistor (VDR) of discharge loop is not worked, and the mutual inductor measurement current value of measuring display section is almost nil, after the single-chip microcomputer sampling of governor circuit, shows not overvoltage by LCDs, is struck by lightning; Under overpressure conditions, the voltage dependent resistor (VDR) voltage dependent resistor (VDR) work of discharge loop, the mutual inductor measuring value of measuring display section increases, and more than the duration exceeded for 1 second, buzzer warning, liquid crystal display shows overvoltage, by the discharge tube of discharge loop, electric energy is imported to the earth; Under thunderbolt state, the voltage dependent resistor (VDR) work of discharge loop, measures the mutual inductor measuring value moment of display section to maximal value, is then zero, buzzer warning, and liquid crystal display shows thunderbolt, by discharge tube, electric energy is imported to the earth.
Referring to Fig. 1, comprise that ATMEGA128-AU is main control circuit part, LCD12864 display circuit, discharge loop, current collection circuit, RS485 telecommunication circuit, the buzzer alarm circuit of core.Described discharge loop is by certainly recovering insurance, current transformer, and voltage dependent resistor (VDR) and discharge tube composition, described measurement display section is by Hall current sensor, switch power module, single-chip microcomputer, hummer and LCDs composition; Single chip computer AT MEGA128-AU gathers and shows by LCD12864, and dirigibility is high and be with RS485 interface, and information can be transferred to backstage; Take transformer induced electric current, to judge overvoltage or thunderbolt; Adopt from recovering insurance, when thunderbolt is later from recovering, without changing insurance.
Referring to Fig. 2, discharge loop by certainly recovering to insure F1, voltage dependent resistor (VDR) MYG20K561, current transformer TA1016-2M, discharge tube 2RM600-8B123 form.In the time that current transformer TA1016-2M does not sense current signal, voltage dependent resistor (VDR) MYG20K561 does not work, and after the single chip computer AT MEGA128-AU sampling of governor circuit, LCD12864 liquid crystal display is shown as not overvoltage, is struck by lightning; The current value increase and the duration that sense as current transformer TA1016-2M exceed 1S, voltage dependent resistor (VDR) MYG20K561 work, the hummer SL1I-12CP of buzzer circuit reports to the police, and LCD12864 liquid crystal display is shown as overvoltage, and by discharge tube, electric energy is imported the earth by 2RM600-8B123; The current value moment sensing as current transformer TA1016-2M increases to maximal value, then be zero, voltage dependent resistor (VDR) MYG20K561 work, the hummer SL1I-12CP of buzzer circuit reports to the police, LCD12864 liquid crystal display is shown as thunderbolt, and by discharge tube, electric energy is imported the earth by 2RM600-8B123.
Voltage dependent resistor (VDR) and discharge tube are all lightning protection anti-over voltage type protection components and parts, realize the protection to late-class circuit, it is 280V-380V that voltage dependent resistor (VDR) is generally selected voltage breakdown, lightning protection circuit on consumer has been emergencing action, voltage dependent resistor (VDR) just just can play a role after external supply voltage raises suddenly, discharge tube add the normal work that can not affect circuit, this lower limit that will ensure the DC breakdown voltage of discharge tube must be higher than the maximum normal working voltage of circuit, determine accordingly the nominal DC breakdown magnitude of voltage of required discharge tube, so the type selecting of gas-discharge tube is nominal DC breakdown voltage 600V.
Referring to Fig. 3, to measure current circuit and formed by rectification circuit, pre-amplifier LM358 and rear class follower LM358, in this circuit, rear class LM358 realizes current detecting as follower.In the time that alternating current passes through mutual inductor, current transformer TA1016-2M induces current signal, go out a direct current signal through D62, D63, D64, D65 rectification, output to rear class follower LM358 after after pre-amplifier LM358 amplifies, finally output to the AD0 end of single-chip microcomputer .ATMEGA128-AU.
The above; it is only preferably embodiment of the utility model; protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in, the simple change of the technical scheme that can obtain apparently or equivalence replace all fall in protection domain of the present utility model.

Claims (5)

1. one kind shows the Novel lightning arrester of overvoltage and thunderbolt, comprise that ATMEGA128-AU is main control circuit part, discharge loop, the measurement current circuit of core, RS485 telecommunication circuit, current collection circuit, buzzer alarm circuit, is characterized in that: described discharge loop forms by certainly recovering insurance, current transformer, voltage dependent resistor (VDR) and discharge tube; Described measurement current circuit is made up of full-wave rectifying circuit, amplifier and follower.
2. a kind of Novel lightning arrester that shows overvoltage and thunderbolt according to claim 1, it is characterized in that: this lightning arrester is by mutual inductor TA1016-2M sensor current signal, output to the testing circuit of measuring current circuit and form by LM358 and measure electric current, this metering circuit outputs to the AD0 mouth of single-chip microcomputer, after single-chip microcomputer sampling, shows normal, overvoltage, thunderbolt state by LCD12864 LCDs.
3. a kind of Novel lightning arrester that shows overvoltage and thunderbolt according to claim 1, it is characterized in that: when under thunderbolt or overvoltage condition, voltage dependent resistor (VDR) MYG20K561 work, mutual inductor TA1016-2M senses current signal, by discharge tube, electric energy is imported the earth by 2RM600-8B123.
4. a kind of Novel lightning arrester that shows overvoltage and thunderbolt according to claim 1, is characterized in that: 29 pins of the ATMEGA128-AU of described main control circuit part are connected to RS485 telecommunication circuit, can be by communication to backstage.
5. a kind of Novel lightning arrester that shows overvoltage and thunderbolt according to claim 1, is characterized in that: adopt from recovering insurance, when thunderbolt is later from recovering, without changing insurance.
CN201420138595.2U 2014-03-25 2014-03-25 Novel lightning arrester with display of overvoltage and lightning Expired - Fee Related CN203858289U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420138595.2U CN203858289U (en) 2014-03-25 2014-03-25 Novel lightning arrester with display of overvoltage and lightning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420138595.2U CN203858289U (en) 2014-03-25 2014-03-25 Novel lightning arrester with display of overvoltage and lightning

Publications (1)

Publication Number Publication Date
CN203858289U true CN203858289U (en) 2014-10-01

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Country Status (1)

Country Link
CN (1) CN203858289U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277854A (en) * 2015-11-18 2016-01-27 国网冀北电力有限公司唐山供电公司 Lightning arrester grounding indicator and lightning arrester grounding indication method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277854A (en) * 2015-11-18 2016-01-27 国网冀北电力有限公司唐山供电公司 Lightning arrester grounding indicator and lightning arrester grounding indication method
CN105277854B (en) * 2015-11-18 2017-07-04 国网冀北电力有限公司唐山供电公司 A kind of arrester ground indicator

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20160613

Address after: 710000 No. five, No. 2, hi tech Zone, Xi'an hi tech Zone, Shaanxi

Patentee after: SHAANXI ALRIGHT ELECTRIC CO., LTD.

Address before: 710075 No. five, No. 2, hi tech Zone, Xi'an hi tech Zone, Shaanxi

Patentee before: Li Zhenggan

C41 Transfer of patent application or patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141001

Termination date: 20180325

CF01 Termination of patent right due to non-payment of annual fee