CN206990670U - A kind of thunder and lightning signal peak detection circuit with latch function - Google Patents
A kind of thunder and lightning signal peak detection circuit with latch function Download PDFInfo
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- CN206990670U CN206990670U CN201720961363.0U CN201720961363U CN206990670U CN 206990670 U CN206990670 U CN 206990670U CN 201720961363 U CN201720961363 U CN 201720961363U CN 206990670 U CN206990670 U CN 206990670U
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Abstract
The utility model discloses a kind of thunder and lightning signal peak with latch function to detect circuit, the circuit includes Rogowski coil, rectification circuit, resistor voltage divider network and n signal transformation circuit, n signal latch circuit, Rogowski coil is acquired to lightning impulse, and thunder and lightning signal will be obtained it is sent to rectification circuit being transformed to direct current signal, it is n voltage in resistor voltage divider network partial pressure, and it is respectively fed to n signal transformation circuit, so, after thunder and lightning signal is changed into direct current signal by rectification circuit, its voltage peak is bigger, the signal transformation circuit of the upset triggered is more, the numerical value for being sent into lightning monitoring equipment is bigger, realize the peak value measurement to lightning impulse current.Simultaneously, the upset of output level is latched by signal latch circuit moment, and after waiting lightning monitoring equipment to be read by after being waken up, the latch of signal latch circuit is removed, realize and preserve the peak value of thunder and lightning signal, the purpose being read out during work is waken up etc. monitoring device.
Description
Technical field
The utility model belongs to signal detection technique field, more specifically, is related to a kind of thunder with latch function
Electrical signal peak detects circuit, for being measured to the peak value of lightning impulse current.
Background technology
At present, many lightning monitoring equipment are installed out of doors, because fixed power source is difficult to obtain, the confession of such monitoring device
TV university uses battery powered more.Simultaneously as the position of this kind of monitoring device installation is much all in interpersonal rare area, because
The replacing of this monitoring device battery is inconvenient, generally requires several years and could carry out primary power source replacing.This is required
The power consumption of monitoring device in itself is very low.And the best method for reducing monitoring device power consumption is to allow monitoring device in lightning impulse
Start-up operation can be waken up during generation, monitoring device is put into resting state after the completion of waiting data acquisition.
But monitoring device needs several milliseconds of time from dormancy to wake-up, and the duration of lightning impulse is general not
More than 100 microseconds.Therefore, under the data acquisition modes of routine, etc. monitoring device after dormancy enters wake-up working condition, thunder
Electric signal disappears already, and monitoring device can not carry out accurate lightning data collection.In order to avoid such case, it is necessary to a kind of electricity
Road can preserve the peak value of thunder and lightning signal, be read out when being waken up work etc. monitoring device.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, for lightning monitoring equipment from dormancy to when waking up
Between with respect to lightning impulse duration procedure, accurate lightning data collection situation can not be carried out, there is provided one kind has
The thunder and lightning signal peak detection circuit of latch function, for the peak value of thunder and lightning signal to be preserved, is waken up etc. monitoring device
It is read out during work.
To realize above-mentioned purpose of utility model, the utility model has the thunder and lightning signal peak detection circuit of latch function,
It is characterised in that it includes：
One Rogowski coil, for being acquired to lightning impulse, obtain thunder and lightning signal and be sent to rectification circuit；
One rectification circuit, for the thunder and lightning collected signal to be transformed into direct current signal, and it is sent into resistor voltage divider network；
One resistor voltage divider network, including n divider resistance R1,R2,…,RnAnd n output resistance R11,R22,…,Rnn,
The direct current signal of rectification circuit output, by divider resistance R1,R2,…,RnIt is connected to ground, output resistance R11One end directly with directly
Flow signal connection, other end output, output resistance R22One end is connected to divider resistance R1、R2Tie point, the other end is defeated
Go out ..., output resistance RnnOne end is connected to divider resistance Rn-1、RnnTie point, the other end output；
Signal transformation circuit 1,2 ..., n, signal transformation circuit 1,2 ..., n input respectively with output resistance R11,
R22,…,RnnThe one-to-one connection of output end, when the input of some signal transformation circuit is more than trigging signal, its output level
Overturn；
Signal latch circuit 1,2 ..., n, signal latch circuit 1,2 ..., n input respectively with signal transformation circuit 1,
2 ..., the n one-to-one connection of output, when the output level of some signal transformation circuit is overturn, are overturn latch, together
When to late-class circuit send one collection enabling signal, for waking up lightning monitoring equipment, after waiting lightning monitoring equipment to be waken up,
Signal latch circuit 1,2 ..., n output level are sent in late-class circuit, and late-class circuit is to signal latch circuit 1,2 ..., n
Output be read out, after reading, to signal latch circuit 1,2 ..., n latch is purged.
What the purpose of this utility model was realized in.
The utility model has the thunder and lightning signal peak detection circuit of latch function, and the circuit includes Rogowski coil, rectification
Circuit, resistor voltage divider network and n signal transformation circuit, n signal latch circuit, Rogowski coil are adopted to lightning impulse
Collection, and thunder and lightning signal will be obtained be sent to rectification circuit being transformed to direct current signal, it is n voltage in resistor voltage divider network partial pressure,
And n signal transformation circuit is respectively fed to, and so, after thunder and lightning signal is changed into direct current signal by rectification circuit, its Voltage Peak
Value is bigger, and the signal transformation circuit of the upset triggered is more, and the numerical value of feeding lightning monitoring equipment is bigger, passes through increase
The subdivision degree of the quantity can increase measurement of acquisition channel, realizes the peak value measurement to lightning impulse current.Meanwhile export electricity
Flat upset is latched by signal latch circuit moment, after waiting lightning monitoring equipment to be read by after being waken up, by signal latch electricity
The latch on road is removed, and has been achieved in that and has been preserved the peak value of thunder and lightning signal, has been read when being waken up work etc. monitoring device
The purpose taken.
Brief description of the drawings
Fig. 1 is the theory diagram for the thunder and lightning signal peak detection circuit that the utility model has latch function；
Fig. 2 is thunder and lightning signal peak detection a kind of embodiment principle frame of circuit with latch function shown in Fig. 1
Figure.
Embodiment
Specific embodiment of the present utility model is described below in conjunction with the accompanying drawings, so as to those skilled in the art more
Understand the utility model well.Requiring particular attention is that in the following description, when known function and design detailed
Perhaps, when description can desalinate main contents of the present utility model, these descriptions will be ignored herein.
In the present embodiment, as shown in figure 1, the utility model has the thunder and lightning signal peak detection circuit bag of latch function
Include：Rogowski coil 1, rectification circuit 2, resistor voltage divider network 3, n signal transformation circuit 4 and n signal latch circuit 5.
Rogowski coil 1 is acquired to lightning impulse, is obtained thunder and lightning signal and is sent to rectification circuit 2；Rectification circuit 2 will
The thunder and lightning signal collected is transformed to direct current signal, and is sent into resistor voltage divider network 3；Resistor voltage divider network 3 includes n partial pressure
Resistance R1,R2,…,RnAnd n output resistance R11,R22,…,Rnn, the direct current signal of rectification circuit output, by divider resistance
R1,R2,…,RnIt is connected to ground, output resistance R11One end is directly connected with direct current signal, other end output, output resistance R22One
End is connected to divider resistance R1、R2Tie point, the other end output ..., output resistance RnnOne end is connected to divider resistance Rn-1、
RnnTie point, the other end output；N signal transformation circuit 4 is signal transformation circuit 1,2 ..., n input respectively with output
Resistance R11,R22,…,RnnThe one-to-one connection of output end, when the input of some signal transformation circuit is more than trigging signal, its
Output level is overturn；N signal latch circuit 5 is signal latch circuit 1,2 ..., n input is electric with signal shaping respectively
Road 1,2 ..., the n one-to-one connection of output, when the output level of some signal transformation circuit is overturn, by its tumble lock
Deposit, while a collection enabling signal is sent to late-class circuit, for waking up lightning monitoring equipment, wait lightning monitoring equipment to be called out
After waking up, signal latch circuit 1,2 ..., n output level is sent in late-class circuit, late-class circuit to signal latch circuit 1,
2 ..., n output are read out, and after reading, to signal latch circuit 1,2 ..., n latch is purged.
Fig. 2 is thunder and lightning signal peak detection a kind of embodiment principle frame of circuit with latch function shown in Fig. 1
Figure.
In the present embodiment, as shown in Fig. 2 signal transformation circuit 4 uses Schmidt trigger, Schmidt trigger turns over
It is 3V to turn level, when a certain divider resistance output voltage, i.e. Schmitt trigger input VXVoltage more than Schmitt trigger
Device trigging signal 3V, then corresponding Schmitt trigger output switching activity, and trigger its corresponding subordinate's signal latch circuit 5 i.e.
D type flip flop latch signal.The DC voltage of input is struck by lightning, and voltage is higher, and it is more that it triggers the Schmitt trigger of upset,
Therefore, the scope of input surge voltage peak value can be calculated by reading the output level of its corresponding d type flip flop.
Although the illustrative embodiment of the utility model is described above, in order to the art
Technical staff understands the utility model, it should be apparent that the utility model is not limited to the scope of embodiment, to this technology
For the those of ordinary skill in field, as long as the essence of the present utility model that various change is limited and determined in appended claim
In god and scope, these changes are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
Claims (2)
- A kind of 1. thunder and lightning signal peak detection circuit with latch function, it is characterised in that including：One Rogowski coil, for being acquired to lightning impulse, obtain thunder and lightning signal and be sent to rectification circuit；One rectification circuit, for the thunder and lightning collected signal to be transformed into direct current signal, and it is sent into resistor voltage divider network；One resistor voltage divider network, including n divider resistance R1,R2,…,RnAnd n output resistance R11,R22,…,Rnn, rectification The direct current signal of circuit output, by divider resistance R1,R2,…,RnIt is connected to ground, output resistance R11Directly believe with direct current one end Number connection, the other end output, output resistance R22One end is connected to divider resistance R1、R2Tie point, the other end output ..., it is defeated Go out resistance RnnOne end is connected to divider resistance Rn-1、RnnTie point, the other end output；Signal transformation circuit 1,2 ..., n, signal transformation circuit 1,2 ..., n input respectively with output resistance R11,R22,…,Rnn The one-to-one connection of output end, when the input of some signal transformation circuit is more than trigging signal, its output level is overturn；Signal latch circuit 1,2 ..., n, signal latch circuit 1,2 ..., n input respectively with signal transformation circuit 1,2 ..., n The one-to-one connection of output, when the output level of some signal transformation circuit is overturn, overturn latch, while backward Level circuit sends a collection enabling signal, for waking up lightning monitoring equipment, after waiting lightning monitoring equipment to be waken up, and signal lock Deposit circuit 1,2 ..., n output level is sent in late-class circuit, and late-class circuit is to signal latch circuit 1,2 ..., n output It is read out, after reading, to signal latch circuit 1,2 ..., n latch is purged.
- 2. the thunder and lightning signal peak detection circuit according to claim 1 with latch function, it is characterised in that described Signal transformation circuit 1,2 ..., n use Schmidt trigger, and the trigging signal of Schmidt trigger is 3V, when a certain partial pressure electricity Output voltage is hindered, i.e. the voltage of Schmitt trigger input is more than Schmitt trigger trigging signal 3V, then this corresponding Schmitt trigger output switching activity, and trigger its corresponding subordinate's signal latch circuit i.e. d type flip flop latch signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961363.0U CN206990670U (en) | 2017-08-03 | 2017-08-03 | A kind of thunder and lightning signal peak detection circuit with latch function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961363.0U CN206990670U (en) | 2017-08-03 | 2017-08-03 | A kind of thunder and lightning signal peak detection circuit with latch function |
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| Publication Number | Publication Date |
|---|---|
| CN206990670U true CN206990670U (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720961363.0U Expired - Fee Related CN206990670U (en) | 2017-08-03 | 2017-08-03 | A kind of thunder and lightning signal peak detection circuit with latch function |
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| CN (1) | CN206990670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983287A (en) * | 2020-08-14 | 2020-11-24 | 宁夏中科天际防雷股份有限公司 | Lightning current monitoring system and method |
-
2017
- 2017-08-03 CN CN201720961363.0U patent/CN206990670U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983287A (en) * | 2020-08-14 | 2020-11-24 | 宁夏中科天际防雷股份有限公司 | Lightning current monitoring system and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20200803 |
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| CF01 | Termination of patent right due to non-payment of annual fee |