CN203562974U - Universal power supply suitable for new national-standard traffic signal lamp - Google Patents
Universal power supply suitable for new national-standard traffic signal lamp Download PDFInfo
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- CN203562974U CN203562974U CN201320623498.8U CN201320623498U CN203562974U CN 203562974 U CN203562974 U CN 203562974U CN 201320623498 U CN201320623498 U CN 201320623498U CN 203562974 U CN203562974 U CN 203562974U
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Abstract
A universal power supply suitable for new national-standard traffic signal lamp comprises an input filter and rectifier circuit, a switch circuit, a transformer, an output rectifier and filter circuit, a 90V light-off control circuit, a PWM and power factor correction circuit, a constant-voltage constant-current circuit and a fast turn-off circuit, wherein an input end of the input filter and rectifier circuit is connected with an electric supply, an output end of the input filter and rectifier circuit is connected with the transformer through the switch circuit, with the PWM and power factor correction circuit through the 90V light-off control circuit, and with a traffic signal lamp unit through the fast turn-off circuit, an output end of the transformer is connected with the traffic signal lamp unit through the output rectifier and filter circuit, the constant-voltage constant-current circuit is connected with the output rectifier and filter circuit and the PWM and power factor correction circuit, and an output end of the PWM and power factor correction circuit is connected with a control end of the switch circuit. By adopting the universal power supply suitable for the new national-standard traffic signal lamp, fast turning-off and isolation of a traffic signal lamp power supply are achieved, the technical performance of a power circuit is improved to meet relevant regulations, and the cost is reduced.
Description
Technical field
The utility model relates to a kind of supply unit, and specifically a kind of multiple power source that is applicable to new national standard GB14887-2011 traffic lights, belongs to signal lamp power technique fields.
Background technology
On July 1st, 2012 starts, traffic lights are implemented new national standard, the up-to-date GB GB14887-2011 > of < < China's road traffic signal lamp > has formulated strict standard for traffic lights, specific as follows:
1, normal starting resistor scope AC176V-220V;
2, operating temperature-40 degree-80 degree;
3, PF is greater than 0.85;
4, startup, turn-off time are less than 100ms;
5, AC90V input traffic lights are not luminous;
6, inrush current is less than 2A.
Only have the signal lamp that meets above-mentioned standard to install and use.But the Switching Power Supply general configuration of existing traffic lights mostly is linear power supply, and its technical parameter can not meet new GB, main cause is the problem of its inner power technology parameter of using.
In order to meet above-mentioned standard, the driving power of existing signal lamp is had higher requirement.Therefore, providing a kind of traffic lights multiple power source that can make traffic lights meet national all standard is completely the problem that this area is needed solution badly.
Utility model content
For above-mentioned deficiency, the utility model provides a kind of multiple power source that is applicable to new national standard GB14887-2011 traffic lights, and it not only can adapt to different signal lamps, and can meet new GB aspect electrical property.
The utility model solves the technical scheme that its technical problem adopts: a kind of multiple power source that is applicable to new national standard traffic lights, described new national standard is that GB14887-2011 road traffic signal lamp national standard is characterized in that, comprise input filter rectification circuit, switching circuit, transformer, output rectifier and filter, the 90V control circuit of turning off the light, PWM and circuit of power factor correction, constant pressure and flow circuit and fast breaking circuit, the input of described input filter rectification circuit is electrically connected to alternating current 220V city, output is connected with the input of transformer by switching circuit respectively, by the 90V control circuit of turning off the light, be connected and be connected with traffic lights unit by quick breaking circuit with the input of PWM and circuit of power factor correction, the output of described transformer is connected with traffic lights unit by output rectifier and filter, the input of described constant pressure and flow circuit is connected with output rectifier and filter, and output is connected with the input of PWM and circuit of power factor correction, the output of described PWM and circuit of power factor correction is connected with the control end of switching circuit.
Further, this multiple power source also comprises inrush current limitation circuit, and described inrush current limitation circuit is connected with switching circuit with input filter rectification circuit respectively.
Preferably, input filter rectification circuit described in the utility model and fast between breaking circuit and be respectively arranged with photoelectric isolating circuit between constant pressure and flow circuit and PWM and circuit of power factor correction.
Preferably, the input of input filter rectification circuit described in the utility model is electrically connected to alternating current 220V city by fuse.
Preferably, switching circuit described in the utility model comprises metal-oxide-semiconductor.
Preferably, the 90V described in the utility model control circuit of turning off the light comprises voltage reference chip.
Preferably, PWM described in the utility model and circuit of power factor correction comprise power factor controlling chip.
The utlity model has following outstanding beneficial effect: adopt after said structure, operating efficiency of the present utility model is high, it can be realized startup, turn-off time and be less than 100ms; AC90V input, traffic lights are not luminous; Inrush current is less than the requirements such as 2A.The utility model cannot meet the problem of up-to-date regulation for existing signal lamp power supply in technical performance, and provide a kind of follow-on signal lamp multiple power source, quick shutoff and the isolation of signal lamp power supply have not only been realized, the technical performance that has improved power circuit meets regulation, and safe, reduced cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is of the present utility model one concrete implementing circuit figure;
In figure, 1, input filter rectification circuit, 2, switching circuit, 3, transformer, 4, output rectifier and filter, 5, the 90V control circuit of turning off the light, 6, PWM and circuit of power factor correction, 7, constant pressure and flow circuit, 8, quick breaking circuit, 9, inrush current limitation circuit.
Embodiment
As illustrated in fig. 1 and 2, a kind of multiple power source that is applicable to new national standard GB14887-2011 traffic lights of the present utility model, it comprises input filter rectification circuit 1, switching circuit 2, transformer 3, output rectifier and filter 4, the 90V control circuit 5 of turning off the light, PWM and circuit of power factor correction 6, constant pressure and flow circuit 7, quick breaking circuit 8 and inrush current limitation circuit 9, the input of described input filter rectification circuit 1 is electrically connected to alternating current 220V city by fuse, output is connected with the input of transformer 3 by switching circuit 2 respectively, by the 90V control circuit 5 of turning off the light, be connected and be connected with traffic lights unit by quick breaking circuit 8 with the input of PWM and circuit of power factor correction 6, the output of described transformer 3 is connected with traffic lights unit by output rectifier and filter 4, the input of described constant pressure and flow circuit 7 is connected with output rectifier and filter 4, and output is connected with the input of circuit of power factor correction 6 with PWM, the output of described PWM and circuit of power factor correction 6 is connected with the control end of switching circuit 2, described inrush current limitation circuit 9 is connected with switching circuit 2 with input filter rectification circuit 1 respectively.Wherein, described input filter rectification circuit 1 and fast between breaking circuit 8, be respectively arranged with photoelectric isolating circuit between constant pressure and flow circuit 7 and PWM and circuit of power factor correction 6.
Due to classical signal lamp power output end filter capacitor relation, have that turn-off speed is slow, signal lamp and civil power do not isolate and produce and use the problem that personal safety is had to certain hidden danger.The utility model, mainly for these problems, has redesigned circuit, has avoided the problems referred to above.The utility model is accepted the 220V voltage from external power source, supplies with switch loop after arranging after filtering loop.Starting current suppresses circuit string in switch loop, large electric current in the time of suppressing to start, after stable output, do not affect again the efficiency of circuit, the circuit of turning off the light is fast used the metal-oxide-semiconductor of low conducting power consumption simultaneously, its control signal comes from city's signal of telecommunication of input, the utmost point that can be after semaphore shutoff signal in the short time (Millisecond) cut off output, avoid time delay to turn off the light, can be when input voltage be less than 90V, thoroughly turn-off output, do not have the phenomenon of lamp glimmer.Use high frequency transformer and light-coupled isolation civil power and traffic lights unit, avoid personal injury.The utility model possesses constant voltage and constant current two cover circuit simultaneously, can adapt to the traffic lights of different driving form.The utility model is used power factor correction chip, can make the power factor of 220V input maintain more than 0.85 and can keep the brightness of lamp not change in the scope of 176-264.The utility model not only can adapt to different signal lamps, and can meet new GB aspect electrical property.
The above is preferred implementation of the present utility model; for those skilled in the art; not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications are also regarded as protection range of the present utility model.
Claims (7)
1. a multiple power source that is applicable to new national standard traffic lights, described new national standard is GB14887-2011 road traffic signal lamp national standard, it is characterized in that, comprise input filter rectification circuit, switching circuit, transformer, output rectifier and filter, the 90V control circuit of turning off the light, PWM and circuit of power factor correction, constant pressure and flow circuit and fast breaking circuit, the input of described input filter rectification circuit is electrically connected to alternating current 220V city, output is connected with the input of transformer by switching circuit respectively, by the 90V control circuit of turning off the light, be connected and be connected with traffic lights unit by quick breaking circuit with the input of PWM and circuit of power factor correction, the output of described transformer is connected with traffic lights unit by output rectifier and filter, the input of described constant pressure and flow circuit is connected with output rectifier and filter, and output is connected with the input of PWM and circuit of power factor correction, the output of described PWM and circuit of power factor correction is connected with the control end of switching circuit.
2. a kind of multiple power source that is applicable to new national standard traffic lights according to claim 1, is characterized in that, also comprises inrush current limitation circuit, and described inrush current limitation circuit is connected with switching circuit with input filter rectification circuit respectively.
3. a kind of multiple power source that is applicable to new national standard traffic lights according to claim 1 and 2, it is characterized in that, between described input filter rectification circuit and fast breaking circuit and be respectively arranged with photoelectric isolating circuit between constant pressure and flow circuit and PWM and circuit of power factor correction.
4. a kind of multiple power source that is applicable to new national standard traffic lights according to claim 1 and 2, is characterized in that, the input of described input filter rectification circuit is electrically connected to alternating current 220V city by fuse.
5. a kind of multiple power source that is applicable to new national standard traffic lights according to claim 1 and 2, is characterized in that, described switching circuit comprises metal-oxide-semiconductor.
6. a kind of multiple power source that is applicable to new national standard traffic lights according to claim 1 and 2, is characterized in that, the described 90V control circuit of turning off the light comprises voltage reference chip.
7. a kind of multiple power source that is applicable to new national standard traffic lights according to claim 1 and 2, is characterized in that, described PWM and circuit of power factor correction comprise power factor controlling chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623498.8U CN203562974U (en) | 2013-10-10 | 2013-10-10 | Universal power supply suitable for new national-standard traffic signal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623498.8U CN203562974U (en) | 2013-10-10 | 2013-10-10 | Universal power supply suitable for new national-standard traffic signal lamp |
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| Publication Number | Publication Date |
|---|---|
| CN203562974U true CN203562974U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320623498.8U Expired - Fee Related CN203562974U (en) | 2013-10-10 | 2013-10-10 | Universal power supply suitable for new national-standard traffic signal lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490647A (en) * | 2013-10-10 | 2014-01-01 | 济南沃尔电子有限公司 | Universal power supply suitable for new Chinese-standard traffic light |
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2013
- 2013-10-10 CN CN201320623498.8U patent/CN203562974U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490647A (en) * | 2013-10-10 | 2014-01-01 | 济南沃尔电子有限公司 | Universal power supply suitable for new Chinese-standard traffic light |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20161010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |