CN207219130U - A kind of road lamp power supply and street lamp - Google Patents
A kind of road lamp power supply and street lamp Download PDFInfo
- Publication number
- CN207219130U CN207219130U CN201721123947.7U CN201721123947U CN207219130U CN 207219130 U CN207219130 U CN 207219130U CN 201721123947 U CN201721123947 U CN 201721123947U CN 207219130 U CN207219130 U CN 207219130U
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- China
- Prior art keywords
- amplifier
- resistance
- power supply
- road lamp
- lamp power
- 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.)
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Abstract
A kind of road lamp power supply and street lamp, including the first amplifier, current sense resistor, the first diode, 3rd resistor and optocoupler, the current input terminal of the in-phase input end connection current sense resistor of first amplifier, inverting input connects the current output terminal of current sense resistor by 3rd resistor, the output end of first amplifier couples the anode of the first diode, the current input terminal of the negative electrode coupling optocoupler of the first diode；Also include the second amplifier, temperature detection resistance, second resistance, the 4th resistance, the 7th resistance and micro-control unit, first termination reference voltage of micro-control unit simultaneously connects the inverting input of the first amplifier by second resistance, second end couples the in-phase input end of the second amplifier, test side connects temperature detection resistance, temperature detection resistance connects reference voltage, and the inverting input and output end of the second amplifier connect the inverting input of the first amplifier by the 4th resistance.The road lamp power supply can avoid the occurrence of street lamp scintillation when machine is played in low temperature environment.
Description
Technical field
It the utility model is related to a kind of road lamp power supply and street lamp.
Background technology
The shortcomings that conventional road lamp power supply is that street lamp can flash when being started shooting used in northern winter cold snap, because low
Electrochemical capacitor capacity reduces when warm, and ESR resistor increase, street lamp is fully loaded working condition, causes electric capacity moment to provide so
Big energy, makes power supply constantly restart, and there have been lamp sudden strain of a muscle.
Utility model content
Main purpose of the present utility model is overcome the deficiencies in the prior art, there is provided one kind is adapted to operate in low temperature environment
In road lamp power supply and with the road lamp power supply street lamp.
To achieve the above object, the utility model uses following technical scheme：
A kind of road lamp power supply, including the first amplifier, current sense resistor, the first diode, 3rd resistor and optocoupler, it is described
The in-phase input end of first amplifier connects the current input terminal of the current sense resistor, the inverting input of first amplifier
The current output terminal of the current sense resistor is connected to by the 3rd resistor, the output end of first amplifier is coupled to
The anode of first diode, the negative electrode of first diode are coupled to the current input terminal of the optocoupler, and its feature exists
In, in addition to the second amplifier, temperature detection resistance, second resistance, the 4th resistance, the 7th resistance and micro-control unit, it is described micro-
First termination reference voltage of control unit is simultaneously connected to the inverting input of first amplifier, institute by the second resistance
It is coupled to the in-phase input end of second amplifier, the test side connection of the micro-control unit in the second end for stating micro-control unit
The temperature detection resistance, the temperature detection resistance connect reference voltage by the 7th resistance, second amplifier it is anti-
Phase input and output end are connected to the inverting input of first amplifier by the 4th resistance.
Further：
The road lamp power supply also includes the 5th resistance and the second electric capacity, and the second end of the micro-control unit passes through described
Five resistance are connected to the in-phase input end of second amplifier, and the in-phase input end of second amplifier connects second electric capacity
One end, second electric capacity the other end ground connection.
The current output terminal of the optocoupler and the temperature detection resistance, the micro-control unit and second electric capacity
Common ground.
The road lamp power supply also includes first resistor and the first electric capacity, and the inverting input of first amplifier passes through series connection
The first resistor and first capacitance connection described in the first amplifier output end.
The road lamp power supply also includes the 6th resistance, and the negative electrode of first diode is connected to by the 6th resistance
The current input terminal of the optocoupler.
A kind of street lamp, including described road lamp power supply.
The beneficial effects of the utility model have：
The utility model provides a kind of road lamp power supply being adapted to operate in low temperature environment, new using this practicality on street lamp
The road lamp power supply of type, it is used in low temperature environment the winter conditions of the north (such as), does not have to be fully loaded with machine equitemperature during low temperature
It is fully loaded to rise band again, is not in street lamp scintillation when playing machine.
Brief description of the drawings
Fig. 1 is a kind of circuit structure diagram of embodiment road lamp power supply of the utility model.
Embodiment
Embodiment of the present utility model is elaborated below.It is emphasized that the description below is only example
Property, rather than in order to limit the scope of the utility model and its application.
Refering to Fig. 1, in one embodiment, a kind of road lamp power supply, including the first amplifier U1-B, current sense resistor
RSENSE, 3rd resistor R3, the first diode D1 and optocoupler PC1-B, the first amplifier U1-B in-phase input end connection institute
Current sense resistor RSENSE current input terminal is stated, the inverting input of the first amplifier U1-B passes through the 3rd resistor
R3 is connected to the current output terminal of the current sense resistor RSENSE, and the output end of the first amplifier U1-B is coupled to described
First diode D1 anode, the negative electrode of the first diode D1 are coupled to the current input terminal of the optocoupler PC1-B；It is described
Road lamp power supply also includes the second amplifier U1-A, temperature detection resistance RNTC, second resistance R2, the 4th resistance R4, the 7th resistance R7
With micro-control unit MCU, the first termination reference voltage (such as 5V reference voltages) of the micro-control unit MCU and by described
Second resistance R2 is connected to the inverting input of the first amplifier U1-B, and the second end of the micro-control unit MCU is coupled to
The in-phase input end of the second amplifier U1-A, the test side of the micro-control unit MCU connect the temperature detection resistance
RNTC, the temperature detection resistance RNTC connect reference voltage by the 7th resistance R7, and the second amplifier U1-A's is anti-phase
Input and output end are connected to the inverting input of the first amplifier U1-B by the 4th resistance R4.
In a preferred embodiment, the road lamp power supply also includes the 5th resistance R5 and the second electric capacity C2, the microcontroller list
First MCU the second end is connected to the in-phase input end of the second amplifier U1-A, second fortune by the 5th resistance R5
The in-phase input end for putting U1-A connects one end of the second electric capacity C2, the other end ground connection of the second electric capacity C2.
In a preferred embodiment, the current output terminal of the optocoupler PC1-B and the temperature detection resistance RNTC, described micro-
Control unit MCU and the second electric capacity C2 common grounds.
In a preferred embodiment, the road lamp power supply also includes first resistor R1 and the first electric capacity C1, first amplifier
U1-B inverting input connects the first amplifier U1-B by the first resistor R1 of series connection with the first electric capacity C1
Output end.
In a preferred embodiment, the road lamp power supply also includes the 6th resistance R6, and the negative electrode of the first diode D1 leads to
Cross the current input terminal that the 6th resistance R6 is connected to the optocoupler PC1-B.
In another embodiment, a kind of street lamp, include the road lamp power supply of foregoing any embodiment.
Operation principle explanation：
Micro-control unit MCU judges the height of environment temperature by the voltage on detection temperature detection resistance RNTC, the
Two amplifier U1-A are connected into voltage follower circuit, and output voltage exports Pulse Width Control by micro-control unit MCU, follower circuit
Output voltage is after the three, the 4th resistance R3, R4 partial pressures and 5V reference voltages are through second resistance, after 3rd resistor R2, R3 partial pressure
Value together decide on constant current the first amplifier U1-B reverse input ends comparison voltage, change the output current of road lamp power supply,
Power output respective change.When temperature is less than certain value, make the first amplifier of amplifier U1-B comparison voltage step-down, namely reduce
Power output, road lamp power supply is set normally to open machine work, power source temperature rises, and micro-control unit MCU is continuously increased the anti-of amplifier
To the comparison voltage of input, power output also constantly increases until peak power output.The intelligent road lamp power supply also has
Have the function that delay changes output current, i.e., when environment temperature is too low, power source temperature rise it is slow, with low current work one section when
If power source temperature does not substantially rise after between, but now the electrochemical capacitor capacity of road lamp power supply has risen, during by one section
Between after can increase power output, can also power supply is rapidly achieved maximum power output.
The intelligent road lamp power supply can be used in northern cold winter, and the machine of rising is not in street lamp scintillation and had
Temperature detection and timing function, make road lamp power supply quickly recover to normal condition.
Above content is to combine specific/preferred embodiment further detailed description of the utility model, no
It can assert that specific implementation of the present utility model is confined to these explanations.For the common skill of the utility model art
For art personnel, without departing from the concept of the premise utility, it can also make to the embodiment that these have been described
Some replacements or modification, and these are substituted or variant should all be considered as belonging to the scope of protection of the utility model.
Claims (6)
1. a kind of road lamp power supply, including the first amplifier, current sense resistor, the first diode, 3rd resistor and optocoupler, described
The in-phase input end of one amplifier connects the current input terminal of the current sense resistor, and the inverting input of first amplifier leads to
The current output terminal that the 3rd resistor is connected to the current sense resistor is crossed, the output end of first amplifier is coupled to institute
The anode of the first diode is stated, the negative electrode of first diode is coupled to the current input terminal of the optocoupler；Characterized in that,
Also include the second amplifier, temperature detection resistance, second resistance, the 4th resistance, the 7th resistance and micro-control unit, the microcontroller
First termination reference voltage of unit is simultaneously connected to the inverting input of first amplifier by the second resistance, described micro-
The in-phase input end of second amplifier is coupled at second end of control unit, described in the test side connection of the micro-control unit
Temperature detection resistance, the temperature detection resistance connect reference voltage by the 7th resistance, second amplifier it is anti-phase defeated
Enter end and output end is connected to the inverting input of first amplifier by the 4th resistance.
2. road lamp power supply as claimed in claim 1, it is characterised in that also including the 5th resistance and the second electric capacity, the micro-control
Second end of unit processed is connected to the in-phase input end of second amplifier by the 5th resistance, second amplifier it is same
Phase input connects one end of second electric capacity, the other end ground connection of second electric capacity.
3. road lamp power supply as claimed in claim 2, it is characterised in that the current output terminal of the optocoupler and the temperature detection
Resistance, the micro-control unit and the second electric capacity common ground.
4. the road lamp power supply as described in any one of claims 1 to 3, it is characterised in that also including first resistor and the first electric capacity,
The inverting input of first amplifier passes through the first amplifier described in the first resistor of series connection and first capacitance connection
Output end.
5. the road lamp power supply as described in any one of claims 1 to 3, it is characterised in that also including the 6th resistance, the described 1st
The negative electrode of pole pipe is connected to the current input terminal of the optocoupler by the 6th resistance.
6. a kind of street lamp, it is characterised in that including the road lamp power supply as described in any one of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123947.7U CN207219130U (en) | 2017-09-04 | 2017-09-04 | A kind of road lamp power supply and street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123947.7U CN207219130U (en) | 2017-09-04 | 2017-09-04 | A kind of road lamp power supply and street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207219130U true CN207219130U (en) | 2018-04-10 |
Family
ID=61826707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721123947.7U Expired - Fee Related CN207219130U (en) | 2017-09-04 | 2017-09-04 | A kind of road lamp power supply and street lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207219130U (en) |
-
2017
- 2017-09-04 CN CN201721123947.7U patent/CN207219130U/en not_active Expired - Fee Related
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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: 20180410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |