CN206908368U - A kind of photosensitive current-limiting control circuit for fault detector - Google Patents
A kind of photosensitive current-limiting control circuit for fault detector Download PDFInfo
- Publication number
- CN206908368U CN206908368U CN201720181245.8U CN201720181245U CN206908368U CN 206908368 U CN206908368 U CN 206908368U CN 201720181245 U CN201720181245 U CN 201720181245U CN 206908368 U CN206908368 U CN 206908368U
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- CN
- China
- Prior art keywords
- resistance
- photoelectrical coupler
- control circuit
- fault detector
- output end
- 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.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Photovoltaic Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It the utility model is related to a kind of photosensitive current-limiting control circuit for fault detector.In the occasion that civil power can not power, powered by the way of typically being combined using solar cell and battery, be equipped with larger solar panel and appropriate accumulator capacity, utilize daytime solar powered, supplemented at night with battery.But when illumination is preferable, because cell panel power is larger, charging current is larger, and the radiating and battery performance to charge switch cause damage.A kind of photosensitive current-limiting control circuit for fault detector is the utility model is related to, wherein：Solar cell panel voltages are grounded after being connected in series with resistance R1, resistance R2, photoelectric coupler output end 4, photoelectric coupler output end 3, and photoelectrical coupler input 1 is connected in series with resistance R3, photo resistance RX and is followed by power supply.The advantages of the utility model：Circuit is simple, and cost is low, low in energy consumption；Reliability is high, practical；Large-scale use economic benefit protrudes；It can be applied to other occasions.
Description
Technical field
It the utility model is related to electronic circuit technology field, especially a kind of photosensitive Current limited Control for fault detector
Circuit.
Background technology
The current application type of battery charging circuit is a lot, and technology is also highly developed, but applies whole without mains-supplied
The charge management circuit at end is more special, constantly to detect cell voltage, when cell voltage electric discharge can just open to a certain extent
Begin to charge, rather than be in floating charge state all the time, charging current will also limit according to battery capacity, not so the property of battery
It is able to can be affected, reduction of service life.Realize this function, in general circuit is more complicated, and quiescent dissipation also compared with
Greatly, as this system using solar panels and storage battery power supply, power consumption is more low better, and valuable electric energy is to provide for system
Work is used, and in general charging circuit significant discomfort is closed and applied in such a occasion.
The content of the invention
The purpose of this utility model is to provide a kind of photosensitive current-limiting control circuit for fault detector, above-mentioned to overcome
Deficiency, the photosensitive current-limiting charge control circuit circuit of fault detector monitoring unit solar energy is simple, and component is few, and circuit is in itself
Power consumption also very little, the integrated management of battery charge and discharge can be achieved, is especially suitable for applying the terminal supply line in low cost,
Especially in large-scale application, considerable benefit is practical.
The purpose of this utility model can be achieved through the following technical solutions：A kind of photosensitive limit for fault detector
Flow control circuit, including：Resistance R1, resistance R2, resistance R3, photo resistance RX, FET Q1, diode D1, photoelectric coupling
Device U1, photoelectrical coupler first input end 1, the second input of photoelectrical coupler 2, the first output end of photoelectrical coupler 3, photoelectricity coupling
The second output end of clutch 4, single-chip microcomputer controlling switch, solar cell panel voltages, battery feed, power supply；Wherein：Solar-electricity
Pond plate voltage with resistance R1, resistance R2, the second output end of photoelectrical coupler 4, the first output end of photoelectrical coupler 3 through being connected in series
After be grounded, photoelectrical coupler first input end 1 and resistance R3, photo resistance RX, which are connected in series, is followed by power supply, and single-chip microcomputer control is drawn
Pin is connected with the second input of photoelectrical coupler 2, solar cell panel voltages and FET Q1, diode D1, storage battery
Source-series connection, photo resistance RX are photo resistance.
A kind of photosensitive current-limiting control circuit for fault detector, wherein：Power supply is 3.3V power supplys.
A kind of photosensitive current-limiting control circuit for fault detector, wherein：Photoelectrical coupler uses PC817 linear photoconductors
Coupler.
Compared with prior art, the utility model has advantages below：
1st, circuit is simple, and cost is low, low in energy consumption；
2nd, reliability is higher, practical；
3rd, extensive Applied economy benefit protrudes；
4th, the design can be applied to other occasions.
Brief description of the drawings
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is circuit diagram of the present utility model.
Reference：Resistance R1, resistance R2, resistance R3, photo resistance RX, FET Q1, diode D1, photoelectric coupling
Device U1, photoelectrical coupler first input end 1, the second input of photoelectrical coupler 2, the first output end of photoelectrical coupler 3, photoelectricity coupling
The second output end of clutch 4, single-chip microcomputer controlling switch CHARGE_CTRL, solar cell panel voltages SUN_VDD, battery feed
BAT_VCC, power vd D.
Embodiment
Embodiment 1, as shown in figure 1, a kind of photosensitive current-limiting control circuit for fault detector, including：Resistance R1, electricity
Hinder R2, resistance R3, photo resistance RX, FET Q1, diode D1, photoelectrical coupler U1, photoelectrical coupler first input end
1st, the second input of photoelectrical coupler 2, the first output end of photoelectrical coupler 3, the second output end of photoelectrical coupler 4, single-chip microcomputer control
Pin CHARGE_CTRL processed, solar cell panel voltages SUN_VDD, battery feed BAT_VCC, power vd D；Wherein：The sun
Energy cell plate voltage SUN_VDD with resistance R1, resistance R2, the second output end of photoelectrical coupler 4, photoelectrical coupler first through exporting
End 3 is grounded after being connected in series, and photoelectrical coupler first input end 1 is connected in series with resistance R3, photo resistance RX and is followed by power supply
VDD, single-chip microcomputer controlling switch CHARGE_CTRL are connected with the second input of photoelectrical coupler 2, solar cell panel voltages SUN_
VDD and FET Q1, diode D1, battery feed BAT_VCC are connected in series, and photo resistance RX is photo resistance.
Embodiment 2, a kind of photosensitive current-limiting control circuit for fault detector, wherein：Power vd D is 3.3V power supplys.
Remaining is the same as embodiment 1.
Embodiment 3, a kind of photosensitive current-limiting control circuit for fault detector, wherein：Photoelectrical coupler U1 is used
PC817 precision photoelectric couplers.Remaining is the same as embodiment 1.
Operation principle：Solar cell panel voltages SUN_VDD is by FET Q1, then passes through diode D1 reverse isolations
Charged afterwards to battery feed BAT_VCC.Solar cell panel voltages SUN_VDD is through resistance R1, resistance R2, photoelectrical coupler
Two output ends 4, the first output end of photoelectrical coupler 3 are grounded after connecting.The series resistance R3 of photoelectrical coupler first input end 1, light
Quick resistance RX is followed by VDD3.3V power supplys pull-up, and the second input of photoelectrical coupler 2 meets single-chip microcomputer controlling switch CHARGE_CTRL.
When single-chip microcomputer needs charging by AD sample detectings to battery, single-chip microcomputer controlling switch CHARGE_CTRL is directly dragged down, is had
Photoelectrical coupler U1 conductings drag down FET Q1 grid voltages in the case of illumination, and FET Q1 conductings start to charge up.By
It is photo resistance in RX, as intensity of illumination increase resistance also increases, photoelectrical coupler U1 uses PC817 linear optical couplings, due to
Photo resistance RX increase so that photoelectrical coupler U1 output end resistance also increases, and FET Q1 grid voltages are gradually increasing,
Drain current is gradually reduced, and reaches the purpose of current-limiting charge；And when illumination is weaker, photo resistance RX resistances are negligible not
Meter, photoelectrical coupler U1 conductings, output resistance very little, control FET Q1 is fully on, the electric energy of preciousness is all used for
Charge a battery.
Claims (3)
1. a kind of photosensitive current-limiting control circuit for fault detector, including：Resistance R1, resistance R2, resistance R3, photo resistance
RX, FET Q1, diode D1, photoelectrical coupler U1, photoelectrical coupler first input end (1), photoelectrical coupler second are defeated
Enter end (2), the output end of photoelectrical coupler first (3), the output end of photoelectrical coupler second (4), single-chip microcomputer controlling switch CHARGE_
CTRL, solar cell panel voltages SUN_VDD, battery feed BAT_VCC, power vd D；It is characterized in that：Solar cell
Plate voltage SUN_VDD is passed through and resistance R1, resistance R2, the output end of photoelectrical coupler second (4), the output end of photoelectrical coupler first
(3) it is grounded after being connected in series, photoelectrical coupler first input end (1) is connected in series with resistance R3, photo resistance RX and is followed by power supply
VDD, single-chip microcomputer controlling switch CHARGE_CTRL are connected with the input of photoelectrical coupler second (2), solar cell panel voltages
SUN_VDD and FET Q1, diode D1, battery feed BAT_VCC are connected in series, and photo resistance RX is photo resistance.
A kind of 2. photosensitive current-limiting control circuit for fault detector according to claim 1, it is characterised in that：Power supply
VDD is 3.3V power supplys.
A kind of 3. photosensitive current-limiting control circuit for fault detector according to claim 1, it is characterised in that：Photoelectricity
Coupler U1 uses PC817 precision photoelectric couplers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720181245.8U CN206908368U (en) | 2017-02-28 | 2017-02-28 | A kind of photosensitive current-limiting control circuit for fault detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720181245.8U CN206908368U (en) | 2017-02-28 | 2017-02-28 | A kind of photosensitive current-limiting control circuit for fault detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206908368U true CN206908368U (en) | 2018-01-19 |
Family
ID=61294570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720181245.8U Expired - Fee Related CN206908368U (en) | 2017-02-28 | 2017-02-28 | A kind of photosensitive current-limiting control circuit for fault detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206908368U (en) |
-
2017
- 2017-02-28 CN CN201720181245.8U patent/CN206908368U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20200228 |