CN205982462U - Thunder current rush reaches and overflows detection device in twinkling of an eye - Google Patents
Thunder current rush reaches and overflows detection device in twinkling of an eye Download PDFInfo
- Publication number
- CN205982462U CN205982462U CN201620860104.4U CN201620860104U CN205982462U CN 205982462 U CN205982462 U CN 205982462U CN 201620860104 U CN201620860104 U CN 201620860104U CN 205982462 U CN205982462 U CN 205982462U
- Authority
- CN
- China
- Prior art keywords
- amplifier
- unit
- negative pole
- diode
- resistance
- 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.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a thunder current rush reaches and overflows detection device in twinkling of an eye, a serial communication port, including sampling unit, the one end of amplifying unit is connected to sampling unit's one end, and integral unit's one end is connected to the other end of amplifying unit, and the one end of detection unit is connected to integral unit's the other end, and signal processing unit is connected to the other end of detection unit. The utility model discloses not only from the security of lightning protection system itself, realize the lightning current and overflow the real -time supervision function of wave form in the twinkling of an eye, still with the lightning current and overflow and assault further the quantification, realize that the thunder and lightning reaches effective protection in grades and manages.
Description
Technical field
This utility model is related to a kind of lightning current impact and temporary over-current detection means, belongs to technical field of security and protection.
Background technology
At present, the continuous expansion of the increase with lightening protection engineering and range of application, the design of lightning-protection system also increasingly by
System designer is paid attention to, and the application of shocking preventing technology has become a key factor of the reliable and secure operation of each electrical equipment.
But the backwardness of existing shocking preventing technology, determines for it uses existing lightning-protection system and Related product as lightening protection engineering, according to
The drawbacks of so exist larger, and protection safety is still difficult to ensure that, the detection of lightning current impact and temporary over-current and impact
All the time do not have very good method to observe and solve, at most the presence or absence of lightning impulse can only be judged, simultaneously because usual
The drawbacks of detect the current transformer itself used by current system, can cause to judge the phenomenon failed to judge by accident, bring pole to lightning monitoring
Big difficulty.
Content of the invention
The technical problems to be solved in the utility model is：Provide and a kind of there is effective protection, safe lightning current
Impact and temporary over-current detection means, solve how accurate observation lightning current impacts and the detection of temporary over-current and asking of impact
Topic.
In order to solve above-mentioned technical problem, the technical solution of the utility model there is provided a kind of lightning current impact and moment
It is characterised in that including sampling unit, one end of sampling unit connects one end of amplifying unit to overcurrent detecting device, amplifies single
The other end of unit connects one end of integral unit, and the other end of integral unit connects one end of detection unit, detection unit another
One end connects signal processing unit.
Preferably, described amplifying unit includes the second amplifier, and the negative pole of the first amplifier and outfan are parallel with
Slide rheostat, the positive pole of the first amplifier is connected with the 6th resistance, and the negative pole of the first amplifier is connected with the 7th resistance.
Preferably, described integral unit includes the 3rd amplifier, and the negative pole of the 3rd amplifier and outfan are parallel with
Electric capacity, is also parallel with first resistor, and the negative pole of the 3rd amplifier is connected with the tenth resistance, and the positive pole of the 3rd amplifier is connected with
11 resistance.
Preferably, described detection unit includes the first amplifier and the 4th amplifier, the negative pole of the first amplifier and defeated
Go out and the first diode and the 3rd diode are parallel with respectively on the negative pole holding upper and the 4th amplifier and outfan, the first amplification
The outfan of device is connected with the positive pole of the second diode, and the outfan of the 4th amplifier is connected with the positive pole of the 4th diode, the
The negative pole of the negative pole of two diodes and the 4th diode connects, and connects between the negative pole of the negative pole of the second diode and the first amplifier
It is connected to the 4th resistance, between the negative pole of the 4th diode and the negative pole of the 4th amplifier, be connected with the 12nd resistance, the first amplification
It is connected with 3rd resistor and second resistance between the positive pole of the negative pole of device and the 4th amplifier.
Preferably, described sampling unit includes Luo-coil and a sampling resistor, and sampling resistor is connected in parallel on Roche line
The two ends of circle.
Of the present utility model safe, not only from the safety of lightning-protection system itself, existing lightning protection can be monitored
Technology is supported, and realizes lightning current and the real time monitoring function of temporary over-current waveform, and further monitoring technology is expanded
Exhibition, can effectively monitor thunder and lightning waveform and intensity, also quantify lightning current and excessively stream impact further, refine thunder and lightning grade, realize
Thunder and lightning classification and effective protection management, realize modernization detection requirement.
Brief description
Fig. 1 is the structured flowchart of a kind of lightning current impact and temporary over-current detection means；
Fig. 2 is the circuit theory diagrams of lightning current amplification and integrated detected unit；
Fig. 3 is the circuit theory diagrams of detection unit；
Fig. 4 is the schematic diagram of sampling unit.
Specific embodiment
For making this utility model become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
This utility model is a kind of lightning current impact and temporary over-current detection means, as shown in figure 1, it includes sampling list
Unit, amplifying unit, integral unit, detection unit and signal processing unit.One end of sampling unit connects one end of amplifying unit,
The other end of amplifying unit connects one end of integral unit, and the other end of integral unit connects one end of detection unit, detection list
The other end of unit connects signal processing unit.
As shown in Fig. 2 amplifying unit includes the second amplifier U2, the negative pole of the first amplifier U2 and outfan are parallel with
The positive pole of slide rheostat WR1, the first amplifier U2 is connected with the 6th resistance R6, and the negative pole of the first amplifier U2 is connected with the 7th
Resistance R7, the 7th resistance R7 ground connection.
Integral unit includes the 3rd amplifier U3, and the negative pole of the 3rd amplifier U3 and outfan are parallel with electric capacity C5, also
It is parallel with first resistor R1, the negative pole of the 3rd amplifier U3 is connected with the tenth resistance R7, and the positive pole of the 3rd amplifier U3 is connected with
11st resistance R11, the 11st resistance R11 ground connection.
As shown in figure 3, detection unit includes the first amplifier U1 and the 4th amplifier U4, the negative pole of the first amplifier U1 and
It is parallel with the first diode D1 and the 3rd diode D3 respectively on outfan and on the negative pole of the 4th amplifier U4 and outfan,
The outfan of the first amplifier U1 is connected with the positive pole of the second diode D2, the outfan of the 4th amplifier U4 and the 4th diode
The positive pole of D4 connects, and the negative pole of the negative pole of the second diode D2 and the 4th diode D4 connects, the negative pole of the second diode D2 with
It is connected with the 4th resistance R4, the negative pole of the 4th diode D4 and the negative pole of the 4th amplifier U4 between the negative pole of the first amplifier U1
Between be connected with the 12nd resistance R12, be connected with the 3rd between the negative pole of the first amplifier U1 and the positive pole of the 4th amplifier U4
Resistance R3 and second resistance R2.
As shown in figure 4, sampling unit includes a Luo-coil LC and sampling resistor R, sampling resistor R is connected in parallel on Roche line
The two ends of circle LC.
Operation principle of the present utility model is：
This utility model is made up of each master unit detection chip and peripheral circuit, is carried out whole by the difference in functionality of each module
Close, the signal that each functional unit is detected is last to pass through data bus transmission to single-chip microcomputer, the most all in the form of analogue signal
Single-chip microcomputer will pass through the outside transmission information of RS485 communication unit module after signal processing afterwards.
Wherein, the second amplifier U2, the 3rd amplifier U3 adopt high-speed low-noise high-operational amplifier OP27, the first amplifier
U1 and the 4th amplifier U4 adopt low noise high-operational amplifier OP07, by the first diode D1, the second diode D2, the three or two
Output waveform is carried out detection process by pole pipe D3, the rectified action of the 4th diode D4, and original waveform is become through processing detection
Become the analog waveform that single-chip microcomputer or A/D chip are capable of identify that.
After lightning current and temporary over-current are sensed by LC, voltage acquisition is carried out by sampling resistor R, after through second
Amplifier U2 carries out one-level amplification, then divides waveform is carried out with shaping through the second order product of the 3rd amplifier U3, the waveform after shaping
After detection unit carries out waveshape detector, analog waveform is transferred to single-chip microcomputer or A/D chip (i.e. signal processing unit) is carried out
Process, single-chip microcomputer passes through the communication units such as RS485 again and externally carries out long-distance transmissions.Each functional module of the present utility model is one
Unified overall, thus more fully grasping lightning protection information, and lightning protection device protection effect itself and health status.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have been shown and described above.One's own profession
The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, these changes and improvements both fall within the range of claimed this utility model.This utility model
Claimed scope is by appending claims and its equivalent thereof.
Claims (5)
1. a kind of lightning current impact and temporary over-current detection means are it is characterised in that include sampling unit, one end of sampling unit
Connect one end of amplifying unit, the other end of amplifying unit connects one end of integral unit, the other end of integral unit connects inspection
One end of ripple unit, the other end of detection unit connects signal processing unit.
2. as claimed in claim 1 a kind of impact of lightning current and temporary over-current detection means it is characterised in that described amplification
Unit includes the second amplifier (U2), and the negative pole of the first amplifier (U2) and outfan are parallel with slide rheostat (WR1), the
The positive pole of one amplifier (U2) is connected with the 6th resistance (R6), and the negative pole of the first amplifier (U2) is connected with the 7th resistance (R7).
3. as claimed in claim 1 a kind of impact of lightning current and temporary over-current detection means it is characterised in that described integration
Unit includes the 3rd amplifier (U3), the negative pole of the 3rd amplifier (U3) and outfan is parallel with electric capacity (C5), is also parallel with
First resistor (R1), the negative pole of the 3rd amplifier (U3) is connected with the tenth resistance (R7), and the positive pole of the 3rd amplifier (U3) connects
There is the 11st resistance (R11).
4. as claimed in claim 1 a kind of impact of lightning current and temporary over-current detection means it is characterised in that described detection
Unit includes the first amplifier (U1) and the 4th amplifier (U4), on the negative pole of the first amplifier (U1) and outfan and the 4th
First diode (D1) and the 3rd diode (D3), the first amplifier are parallel with respectively on the negative pole of amplifier (U4) and outfan
(U1) outfan is connected with the positive pole of the second diode (D2), the outfan of the 4th amplifier (U4) and the 4th diode (D4)
Positive pole connect, the negative pole of the negative pole of the second diode (D2) and the 4th diode (D4) connects, the second diode (D2) negative
It is connected with the 4th resistance (R4), the negative pole of the 4th diode (D4) and the 4th amplification between the negative pole of pole and the first amplifier (U1)
It is connected with the 12nd resistance (R12) between the negative pole of device (U4), the negative pole of the first amplifier (U1) and the 4th amplifier (U4)
It is connected with 3rd resistor (R3) and second resistance (R2) between positive pole.
5. as claimed in claim 1 a kind of impact of lightning current and temporary over-current detection means it is characterised in that described sampling
Unit includes Luo-coil (LC) and a sampling resistor (R), and sampling resistor (R) is connected in parallel on the two ends of Luo-coil (LC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620860104.4U CN205982462U (en) | 2016-08-10 | 2016-08-10 | Thunder current rush reaches and overflows detection device in twinkling of an eye |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620860104.4U CN205982462U (en) | 2016-08-10 | 2016-08-10 | Thunder current rush reaches and overflows detection device in twinkling of an eye |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205982462U true CN205982462U (en) | 2017-02-22 |
Family
ID=59978017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620860104.4U Active CN205982462U (en) | 2016-08-10 | 2016-08-10 | Thunder current rush reaches and overflows detection device in twinkling of an eye |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205982462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230042A (en) * | 2020-12-11 | 2021-01-15 | 南京汇宁桀信息科技有限公司 | Impulse current detection circuit |
| CN112858770A (en) * | 2021-01-26 | 2021-05-28 | 广东电网有限责任公司广州供电局 | Anti-interference lightning current detection device |
-
2016
- 2016-08-10 CN CN201620860104.4U patent/CN205982462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230042A (en) * | 2020-12-11 | 2021-01-15 | 南京汇宁桀信息科技有限公司 | Impulse current detection circuit |
| CN112858770A (en) * | 2021-01-26 | 2021-05-28 | 广东电网有限责任公司广州供电局 | Anti-interference lightning current detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105938167B (en) | Direct current system exchange scurries into localization of fault and searches device and method | |
| CN104267296B (en) | STATCOM fault diagnosis method based on MMC | |
| CN103499736A (en) | Over-current detection circuit and over-current protection circuit | |
| CN206585390U (en) | A kind of arc light protection system for background monitoring | |
| CN205982462U (en) | Thunder current rush reaches and overflows detection device in twinkling of an eye | |
| CN103795029B (en) | The leakage current test protection circuit of direct-current remote feeding power system | |
| CN206099897U (en) | Photovoltaic power plant with trouble recognition function | |
| CN204228942U (en) | The line fault observation circuit of current transformer | |
| CN206773065U (en) | A kind of lightning current detection system | |
| CN203259622U (en) | Branch circuit inspection module of transformer station DC system microcomputer insulation monitoring device | |
| CN209690399U (en) | A kind of lightning current peak detector | |
| CN108957142A (en) | A kind of line loss detection automatic acquisition device and method | |
| CN202794383U (en) | Wind power grid electric energy quality parameter detecting device based on DSP, CPLD, and ARM | |
| CN107490748A (en) | A kind of overhead transmission line lightning monitoring device based on snap ring power taking technology | |
| CN210720685U (en) | Leakage monitoring device based on low-current grounding line selection | |
| CN204666751U (en) | A kind of Zinc-Oxide Arrester on-Line Monitor Device based on dsp chip | |
| CN107677911A (en) | A kind of electric energy quality detection device with electric fire disaster warning function | |
| CN102650653A (en) | Intelligent lightning stroke monitoring device | |
| CN203178385U (en) | Doubling protection action consistency monitoring device | |
| CN202502131U (en) | Voltage/current detecting circuit | |
| CN105467236B (en) | A kind of digital quantity signal monitoring device | |
| CN204887653U (en) | Street lamp leakage detection system | |
| CN110854827B (en) | Protection system of direct current residual current circuit breaker | |
| CN103630778B (en) | Three phase electrical parameters Quick Acquisition module | |
| CN107651550B (en) | A kind of staircase malfunction monitoring and prior-warning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |