CN207184149U - A kind of road safety monitoring uninterrupted power supply circuit - Google Patents
A kind of road safety monitoring uninterrupted power supply circuit Download PDFInfo
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- CN207184149U CN207184149U CN201721156252.9U CN201721156252U CN207184149U CN 207184149 U CN207184149 U CN 207184149U CN 201721156252 U CN201721156252 U CN 201721156252U CN 207184149 U CN207184149 U CN 207184149U
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Abstract
A kind of road safety monitoring uninterrupted power supply circuit, including processor of single chip computer module, main circuit, the main circuit uses bi-directional half bridge structure, the drain electrode of interface U2 connections metal-oxide-semiconductor 1, source electrode connection inductance L1 one end of metal-oxide-semiconductor 1, inductance L1 other ends connection BAT interfaces；The drain electrode of the source electrode connection metal-oxide-semiconductor 2 of metal-oxide-semiconductor 1, the source electrode connection BAT+ interfaces of metal-oxide-semiconductor 2；The inductance L1 other ends, metal-oxide-semiconductor 2 source electrode between shunt capacitance C1, electric capacity C2.Interface U2 connection resistance R2 one end, resistance R2 other ends connection resistance R945 one end, resistance R945 other end concatenation operation amplifiers LM358；Resistance R2, resistance R945 form bleeder circuit.Interface U2 connection resistance R3 one end, resistance R3 other ends connection resistance R925 one end, resistance R925 other end concatenation operation amplifiers LM358.The stable output rated voltage in 1ms, monitoring device will not restart the utility model circuit because of power down telegram in reply process reset after a power failure.Two-way DC DC converter circuits design is relatively easy, and corresponding cost is low, while brings high reliability.
Description
Technical field
A kind of uninterrupted power supply circuit is the utility model is related to, specifically a kind of road safety monitoring uninterrupted power source electricity
Road.
Background technology
In the prior art, security monitoring camera needs work for 24 hours, and the safety and reliability of power supply requires high,
Need to use and powered with the equally reliable DC power system of control power-supply system.Traditional UPS (uninterrupted power source) is with inversion
Device is chief component, output and the same amplitude of civil power, the electric energy of same frequency.The inside of ups power is general mainly by with bottom
It is grouped into：The access of civil power, the converter rectifier of AC-to DC is carried out, carry out the inverter of conversion of the direct current to exchange, it is defeated
Go out switching circuit and energy storage battery.The circuit of traditional ups power is complicated, and design difficulty is of a relatively high, corresponding that cost is high.
The content of the invention
To overcome the circuit of ups power in the prior art complicated, design difficulty is of a relatively high, the high deficiency of cost.This reality
With a kind of road safety monitoring uninterrupted power supply circuit of new offer, the circuit energy bidirectional, dc converts, and designs from list, into
This is low.
The technical scheme that the utility model is taken is：
A kind of road safety monitoring uninterrupted power supply circuit, including processor of single chip computer module, main circuit, the main circuit
Using bi-directional half bridge structure, interface U2 is connected with the output of Industrial Frequency Transformer step-down rectifier；The drain electrode of interface U2 connections metal-oxide-semiconductor 1,
Source electrode connection inductance L1 one end of metal-oxide-semiconductor 1, inductance L1 other ends connection BAT- interfaces；
The drain electrode of the source electrode connection metal-oxide-semiconductor 2 of metal-oxide-semiconductor 1, the source electrode connection BAT+ interfaces of metal-oxide-semiconductor 2；
The inductance L1 other ends, metal-oxide-semiconductor 2 source electrode between shunt capacitance C1, electric capacity C2；
BAT+ interfaces, BAT- interfaces are connected with lithium battery；
Interface U2 connection resistance R2 one end, resistance R2 other ends connection resistance R945 one end, the connection of the resistance R945 other ends
Operational amplifier LM358；Resistance R2, resistance R945 form bleeder circuit, for gathering the input electricity of bi-directional half bridge structural circuit
Pressure, the voltage follower then formed by operational amplifier LM358, is sent to processor of single chip computer modules A D1 interfaces；Interface U2
Connect resistance R3 one end, resistance R3 other ends connection resistance R925 one end, resistance R925 other end concatenation operation amplifiers
LM358；Resistance R3, resistance R925 form bleeder circuit, for gathering the output voltage of bi-directional half bridge structural circuit, then pass through
The voltage follower of operational amplifier LM358 compositions, is sent to processor of single chip computer modules A D2 interfaces.The operational amplifier
LM358 connections resistance R66, resistance R66 connection voltage-stabiliser tube 1N4728.
Described electric capacity C2 other ends connection current sampling resistor R7 one end, current sampling resistor R7 other ends connection BAT- connect
Mouthful；The electric current for flowing through current sampling resistor R7 is converted into voltage, and processor of single chip computer is sent to by two-stage operational amplifier in the same direction
The AD collections port of module.
The processor of single chip computer module connects peripheral circuit, and the peripheral circuit includes download program interface, liquid crystal is adjusted
Try mouth, reset circuit.
The processor of single chip computer module connects auxiliary power circuit, and the auxiliary power circuit includes three terminal regulator
L7812、L7805。
The processor of single chip computer module connects mosfet driving chips.
The processor of single chip computer module uses MSP430G2553 single-chip microcomputers.
A kind of road safety monitoring uninterrupted power supply circuit of the utility model, stable output is specified in 1ms after a power failure
Voltage, monitoring device will not reset because of power down telegram in reply process restarts.Bidirectional DC-DC converter circuit design is relatively easy, phase
Corresponding cost is low, while brings high reliability.
Brief description of the drawings
Fig. 1 is control circuit schematic diagram of the present utility model.
Fig. 2 is liquid crystal debugging interface circuit diagram of the present utility model.
Fig. 3 is download program interface circuit figure of the present utility model.
Fig. 4 is control circuit auxiliary power circuit figure of the present utility model.
Fig. 5 is main circuit schematic diagram of the present utility model.
Fig. 6 is lithium battery charging circuit figure of the present utility model.
Embodiment
As shown in Fig. 1~Fig. 6, a kind of road safety monitoring uninterrupted power supply circuit, including processor of single chip computer module, master
Circuit.Fig. 1 is control circuit schematic diagram of the present utility model, is mainly made up of MSP430G2553 single-chip microcomputers and peripheral circuit.
Peripheral circuit includes download program interface, liquid crystal debugging interface, 5 Independent keys of reset circuit.L2 and L3 distinguishes in Fig. 4 circuits
For L7812 and L7805, pressure stabilization function is played, is the accessory power supply part of circuit.LED1 is relay indicating light.Fig. 5 is power supply electricity
The main circuit diagram on road, the main circuit use bi-directional half bridge structure, and interface U2 is connected with the output of Industrial Frequency Transformer step-down rectifier.
The drain electrode of interface U2 connections metal-oxide-semiconductor 1, source electrode connection inductance L1 one end of metal-oxide-semiconductor 1, inductance L1 other ends connection BAT- interfaces.
The drain electrode of the source electrode connection metal-oxide-semiconductor 2 of metal-oxide-semiconductor 1, the source electrode connection BAT+ interfaces of metal-oxide-semiconductor 2.The inductance L1 other ends, the source of metal-oxide-semiconductor 2
Shunt capacitance C1, electric capacity C2 between pole；
BAT+ interfaces, BAT- interfaces are connected with lithium battery.
The bi-directional half bridge that interface U2 is made up of metal-oxide-semiconductor 1, metal-oxide-semiconductor 2 and inductance L1, electric capacity C1, electric capacity C2, gives after decompression
Lithium cell charging.When having a power failure, lithium battery boosts to 12V by bi-directional half bridge circuit and powered to safety monitoring core board.Interface
U2 connection resistance R2 one end, resistance R2 other ends connection resistance R945 one end, resistance R945 other end concatenation operation amplifiers
LM358；Resistance R2, resistance R945 form bleeder circuit, for gathering the input voltage of bi-directional half bridge structural circuit, then pass through
The voltage follower of operational amplifier LM358 compositions, is sent to processor of single chip computer modules A D1 interfaces；Interface U2 connection resistance R3
One end, resistance R3 other ends connection resistance R925 one end, resistance R925 other end concatenation operation amplifiers LM358；Resistance R3, electricity
R925 composition bleeder circuits are hindered, for gathering the output voltage of bi-directional half bridge structural circuit, then by operational amplifier LM358
The voltage follower of composition, it is sent to processor of single chip computer modules A D2 interfaces.The operational amplifier LM358 connections resistance R66,
Resistance R66 connection voltage-stabiliser tubes 1N4728.
Described electric capacity C2 other ends connection current sampling resistor R7 one end, current sampling resistor R7 other ends connection BAT- connect
Mouthful；The electric current for flowing through current sampling resistor R7 is converted into voltage, is sent to single-chip microcomputer P1.5's by two-stage operational amplifier in the same direction
AD gathers port.
The processor of single chip computer module connects peripheral circuit, and the peripheral circuit includes download program interface, liquid crystal is adjusted
Try mouth, reset circuit.
The processor of single chip computer module connects auxiliary power circuit, and the auxiliary power circuit includes three terminal regulator
L7812、L7805。
The processor of single chip computer module connects mosfet driving chips.Lithium cell charging mode is constant pressure after first constant current.
Component U1 is that IR2110 is mosfet driving chips, U1 10 and 12 pins connect single-chip microcomputer processor module P2.2 and
The G1 and G2 of P2.4, U1 part are connected with mosfet driving chips.
Bidirectional DC-DC converter is designed behind by Industrial Frequency Transformer step-down rectifying circuit, the DC voltage after rectification
By the decompression mode of bidirectional DC-DC converter to lithium cell charging, while supply the power supply of safety monitoring core board.In civil power or
In the case of power down caused by other external causes of person, energy-storage battery is operated in boost mode by bidirectional DC-DC converter circuit
Powered to safety monitoring core board.The time of the switching of this pattern is related to the single-chip microcomputer control reaction time, passes through PI algorithms
Stable output, conversion time are less than 1ms.So as to reach the purpose of uninterrupted power supply.
Claims (7)
1. a kind of road safety monitoring uninterrupted power supply circuit, including processor of single chip computer module, main circuit, the main circuit are adopted
With bi-directional half bridge structure, it is characterised in that：Interface U2 is connected with the output of Industrial Frequency Transformer step-down rectifier；
The drain electrode of interface U2 connections metal-oxide-semiconductor 1, source electrode connection inductance L1 one end of metal-oxide-semiconductor 1, inductance L1 other ends connection BAT- connect
Mouthful；
The drain electrode of the source electrode connection metal-oxide-semiconductor 2 of metal-oxide-semiconductor 1, the source electrode connection BAT+ interfaces of metal-oxide-semiconductor 2；
The inductance L1 other ends, metal-oxide-semiconductor 2 source electrode between shunt capacitance C1, electric capacity C2；
BAT+ interfaces, BAT- interfaces are connected with lithium battery；
Interface U2 connection resistance R2 one end, resistance R2 other ends connection resistance R945 one end, resistance R945 other end concatenation operations
Amplifier LM358；Resistance R2, resistance R945 form bleeder circuit, for gathering the input voltage of bi-directional half bridge structural circuit, so
The voltage follower formed afterwards by operational amplifier LM358, is sent to processor of single chip computer modules A D1 interfaces；Interface U2 connections
Resistance R3 one end, resistance R3 other ends connection resistance R925 one end, resistance R925 other end concatenation operation amplifiers LM358；Electricity
R3, resistance R925 composition bleeder circuit are hindered, for gathering the output voltage of bi-directional half bridge structural circuit, then by operation amplifier
The voltage follower of device LM358 compositions, is sent to processor of single chip computer modules A D2 interfaces.
A kind of 2. road safety monitoring uninterrupted power supply circuit according to claim 1, it is characterised in that：The operation amplifier
Device LM358 connections resistance R66, resistance R66 connection voltage-stabiliser tube 1N4728.
A kind of 3. road safety monitoring uninterrupted power supply circuit according to claim 1, it is characterised in that：The electric capacity C2 is another
One end connection current sampling resistor R7 one end, current sampling resistor R7 other ends connection BAT- interfaces；
The electric current for flowing through current sampling resistor R7 is converted into voltage, and processor of single chip computer is sent to by two-stage operational amplifier in the same direction
The AD collections port of module.
A kind of 4. road safety monitoring uninterrupted power supply circuit according to claim 1, it is characterised in that：At the single-chip microcomputer
Device module connection peripheral circuit is managed, the peripheral circuit includes download program interface, liquid crystal debugging interface, reset circuit.
A kind of 5. road safety monitoring uninterrupted power supply circuit according to claim 1, it is characterised in that：At the single-chip microcomputer
Device module connection auxiliary power circuit is managed, the auxiliary power circuit includes three terminal regulator L7812, L7805.
A kind of 6. road safety monitoring uninterrupted power supply circuit according to claim 1, it is characterised in that：At the single-chip microcomputer
Manage device module connection mosfet driving chips.
A kind of 7. road safety monitoring uninterrupted power supply circuit according to claim 1, it is characterised in that：At the single-chip microcomputer
Reason device module uses MSP430G2553 single-chip microcomputers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721156252.9U CN207184149U (en) | 2017-09-08 | 2017-09-08 | A kind of road safety monitoring uninterrupted power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721156252.9U CN207184149U (en) | 2017-09-08 | 2017-09-08 | A kind of road safety monitoring uninterrupted power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184149U true CN207184149U (en) | 2018-04-03 |
Family
ID=61743736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721156252.9U Expired - Fee Related CN207184149U (en) | 2017-09-08 | 2017-09-08 | A kind of road safety monitoring uninterrupted power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298337A (en) * | 2018-08-27 | 2019-02-01 | 东莞市北斗星电子科技有限公司 | Zero lotus of storage battery and its automatic monitoring big data terminal are transmitted based on UPS module |
-
2017
- 2017-09-08 CN CN201721156252.9U patent/CN207184149U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298337A (en) * | 2018-08-27 | 2019-02-01 | 东莞市北斗星电子科技有限公司 | Zero lotus of storage battery and its automatic monitoring big data terminal are transmitted based on UPS module |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20210908 |
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| CF01 | Termination of patent right due to non-payment of annual fee |