CN205910851U

CN205910851U - Intelligent transportation lamp of low -power consumption

Info

Publication number: CN205910851U
Application number: CN201620693359.6U
Authority: CN
Inventors: 于太利
Original assignee: Shaoxing Two Xi Tea Factory
Current assignee: Shaoxing Two Xi Tea Factory
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2017-01-25
Anticipated expiration: 2026-06-30

Abstract

The utility model provides an intelligent transportation lamp of low -power consumption, the utility model relates to a power supply design technical field, prior art LED actuator module and the consuming excessive quantities of energy and resources of LED body are aimed at solving to it, have the electric charge that is left in a large number, can in time not handle technical problem such as the signal that overshoots. This invention is main including a pulse width control ware for the control source duty cycle, the 2nd pulse width control ware for control and remain charge bleed -off and cut off unloaded power, a field effect transistor receives the duty cycle modulation clock of pulse width control ware output and switches on or close the power, step -down modulated circuit has the circuit structure of releasing, receives the first modulation power source of field effect transistor output, receives the control clock of the 2nd pulse width control ware output and compensates or release the first modulation power source of field effect transistor output, the 2nd field effect transistor is controlled by step -down modulated circuit and constitutes step -down switch circuit structure with a field effect transistor. The utility model is used for the information issuing intelligent terminal consumption is subductd.

Description

A kind of intelligent traffic light of low-power consumption

Technical field

The present invention relates to Power Management Design technical field is and in particular to a kind of intelligent traffic light of low-power consumption.

Background technology

Increase with national power consumption and electric load very fast, have the different degrees of short of electricity of multiple local appearance every year even Power cuts to limit consumption phenomenon.Therefore save lighting electricity consumption to energy-saving and emission-reduction, low-carbon environment-friendly is significant.Existing power supply, is closing Under machine state, due to relying on the next power on circuitry detection, still can be a small amount of by the output of digital isolator downward bit driver circuit Electric energy, its modulation circuit is allowed to be in the state of not complete switching off, and causes waste of energy, and moreover, remaining charge accumulated is being adjusted In circuit processed, in next power-on, the impact electric charge amplitude opening moment is very high, after being superimposed with remaining electric charge, easily damages Bad component (such as the led of bottom circuit flicker, neglects bright neglecting secretly)；Prior art is not provided with reaction type overshoot protection.

Content of the invention

For above-mentioned prior art, present invention aim at providing a kind of intelligent traffic light of low-power consumption, it aims to solve the problem that Prior art led drives module and led body highly energy-consuming highly energy-consuming, there is remaining electric charge in a large number and overshoots it is impossible to enough process in time The technical problems such as signal.

For reaching above-mentioned purpose, the technical solution used in the present invention is as follows:

A kind of intelligent traffic light of low-power consumption, including power supply and the next circuit, also includes the first pulse width controller, for controlling Power supply dutycycle processed；Second pulse width controller, for controlling remaining charge discharging resisting and cut-out idle power；First field effect transistor, Receive duty ratio modulation clock and the on and off power supply of the first pulse width controller output；Blood pressure lowering modulation circuit, has and releases Circuit structure, receives the first modulation power source of the first field effect transistor output, receives the control clock of the second pulse width controller output And the first modulation power source of compensation or the first field effect transistor output of releasing；Second field effect transistor, be controlled by blood pressure lowering modulation circuit and Constitute step-down switching circuit structure with the first field effect transistor；Digital isolator, isolated buck modulation circuit and the next circuit.

In such scheme, described blood pressure lowering modulation circuit, including inductance, receive the first modulation of the first field effect transistor output Power supply and export the second modulation power source to digital isolator；First electric capacity, filter the second modulation power source high frequency period noise or Very brief burr；Second electric capacity, constitutes π type filter structure with inductance, the first electric capacity, compensates the first modulation power source；3rd field effect Pipe, for closing electric charge of releasing during power supply, receives the reference clock of the first pulse width controller output and releases or maintain first First modulation power source of effect pipe output, reference clock is synchronous with duty ratio modulation clock；4th field effect transistor, is used for knot of releasing Parasitic capacitance electric charge, receives the control clock of the second pulse width controller output；Release switch triode, receive the first pulse-width controlled The reference clock of device output, is controlled by the 4th field effect transistor and controls the second field effect transistor on or off.

In such scheme, described power supply, including alternating current power supply and full-wave rectification bridge.

In such scheme, described the first field effect transistor, pass sequentially through the first diode, rc wave filter receives the first pulsewidth The duty ratio modulation clock of controller output.Achieve and mate with the frequency of different electrical power, especially for symbolic component dc-dc The frequency matching characteristic of power supply.

In such scheme, also include Zener diode, its low electrode connects to inductance；Optical coupler, its luminous tube high electrode Connect the high electrode of Zener diode and photosensitive tube feedback is reversely overshooted the breakdown signal exporting to first by Zener diode Pulse width controller and the second pulse width controller.Achieve overshoot signal feedback, by the first pulse width controller and the second pulse-width controlled Device triggers power supply in time and actively turns off and circuit charge discharging resisting, thus protection circuit element.

In such scheme, also include the second diode and the 3rd diode, its low electrode is connected to the 3rd field effect transistor And high electrode ground connection.For forming electric potential difference, drive electric charge of releasing.

In such scheme, described the next circuit, including led driver and led array；Described led driver includes Single-chip microcomputer stc12c5a60s2；Described led array, its general power is less than 60 watts.

Compared with prior art, beneficial effects of the present invention:

In the next circuit or power-off, make use of synchronous inverting clock signal that modulation circuit is controlled, realize In shutdown moment to input power cut-off bleed-off circuit electric charge；The modulation power source noise of output is low, good stability；Provide Overshoot protection；Led and its driving module power consumption are low；There is higher power adaptation characteristic and versatility.

Brief description

Fig. 1 is the circuit diagram of the present invention.

Specific embodiment

All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive Feature and/or step beyond, all can combine by any way.

The present invention will be further described below in conjunction with the accompanying drawings:

Embodiment 1

First pulse width controller, for controlling power supply dutycycle；Second pulse width controller, for controlling remaining charge discharging resisting With cut-out idle power；First field effect transistor q3, receive first pulse width controller output duty ratio modulation clock and conducting or Close power supply；Blood pressure lowering modulation circuit, has leadage circuit structure, receives the first modulation power source of the first field effect transistor output, connects That receives the second pulse width controller output controls clock and the first modulation power source of compensation or the first field effect transistor q3 output of releasing；The Two field effect transistor q2, are controlled by blood pressure lowering modulation circuit and constitute step-down switching circuit structure with the first field effect transistor q3；Numeral every From device, isolated buck modulation circuit and the next circuit.

Described blood pressure lowering modulation circuit, including inductance l1, receive the first field effect transistor q3 output the first modulation power source and Export the second modulation power source to digital isolator；First electric capacity c1, filters the high frequency period noise or very brief of the second modulation power source Burr；Second electric capacity c3, constitutes π type filter structure with inductance l1, the first electric capacity c1, compensates the first modulation power source；3rd effect Should pipe q5, for closing electric charge of releasing during power supply, receive the reference clock of the first pulse width controller output and release or maintain the First modulation power source of one field effect transistor q3 output；4th field effect transistor q4, is used for knot parasitic capacitance electric charge of releasing, receives second The control clock of pulse width controller output；Release switch triode q6, receives the reference clock of the first pulse width controller output, is subject to Control in the 4th field effect transistor q4 and control the second field effect transistor q2 on or off.

Embodiment 2

In the next circuit electricity consumption state, power supply selects alternating current, and the second pulse width controller exports low electric control clock, three poles Pipe q6 is not turned on and the cut-off of field effect transistor q2, if the first pulse width controller exports low electricity reference clock and exports high electricity dutycycle tune Clock processed, field effect transistor q5 is ended, and field effect transistor q3 turns on, and the next circuit obtains galvanic current by digital isolator Source, electric capacity c1, electric capacity c3 are full state of charge；In the next down circuitry moment, the first pulse width controller is synchronously anti-phase at once to be accounted for Empty ratio modulating clock, reference clock, field effect transistor q3 is ended, the second pulse width controller high electric control clock of output, audion q6, Field effect transistor q2, field effect transistor q4 and field effect transistor q5 turn on, and the conducting of field effect transistor q4 needs to compare the first pulse width controller Output occurs synchronous anti-phase fast, and they are quickly released to loop electric charge, junction capacity, the cycle of releasing can based on experience value, but Field effect transistor q4 needs last shutoff.

Embodiment 3

Described led array, including body, diffused reflector, reflecting plate and the plate with led, described reflecting plate is by multiple portions Point reflecting plate composition, described part reflecting plate is separated by the air gap, be obliquely distributed in described body and described diffused reflector it Between space in, be in different angles from described body.Described part reflecting plate tilts different angles with respect to described body γ, described angle γ meets 50 ° of 8 ° of ＜ γ ＜ of condition, thus eliminating the dazzling effect of LED lamp, prevents from shining due to light of the present invention Eye and in road pedestrian driving threaten, simultaneously simplify lamp design.

The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, all answer It is included within the scope of the present invention.

Claims

1. a kind of intelligent traffic light of low-power consumption, including power supply and the next circuit it is characterised in that also including

First pulse width controller, for controlling power supply dutycycle；

Second pulse width controller, for controlling remaining charge discharging resisting and cut-out idle power；

First field effect transistor, receives duty ratio modulation clock and the on and off power supply of the first pulse width controller output；

Blood pressure lowering modulation circuit, has leadage circuit structure, receives the first modulation power source of the first field effect transistor output, receives second The control clock of pulse width controller output and the first modulation power source of compensation or the first field effect transistor output of releasing；

Second field effect transistor, is controlled by blood pressure lowering modulation circuit and constitutes step-down switching circuit structure with the first field effect transistor；

Digital isolator, isolated buck modulation circuit and the next circuit；

Described the next circuit, including led driver and led array；

Described led driver includes single-chip microcomputer stc12c5a60s2.

2. a kind of intelligent traffic light of low-power consumption according to claim 1 is it is characterised in that described blood pressure lowering modulation is electric Road, including

Inductance, receives the first modulation power source of the first field effect transistor output and exports the second modulation power source to digital isolator；

First electric capacity, filters the high frequency period noise of the second modulation power source or very brief burr；

Second electric capacity, constitutes π type filter structure with inductance, the first electric capacity, compensates the first modulation power source；

3rd field effect transistor, for closing electric charge of releasing during power supply, receives the reference clock of the first pulse width controller output and lets out Put or maintain the first modulation power source of the first field effect transistor output；

4th field effect transistor, is used for knot parasitic capacitance electric charge of releasing, and receives the control clock of the second pulse width controller output；

Release switch triode, receive the reference clock of the first pulse width controller output, be controlled by the 4th field effect transistor and control Second field effect transistor on or off.

3. a kind of intelligent traffic light of low-power consumption according to claim 1 is it is characterised in that described the first field effect Pipe, passes sequentially through the first diode, rc wave filter receives the duty ratio modulation clock that the first pulse width controller exports.

4. a kind of intelligent traffic light of low-power consumption according to claim 1 is it is characterised in that also include

Zener diode, its low electrode connects to inductance；

Optical coupler, its luminous tube high electrode connects the high electrode of Zener diode and photosensitive tube feedback is subject to reversely by Zener diode The breakdown signal of overshoot output is to the first pulse width controller and the second pulse width controller.

5. a kind of low-power consumption according to claim 1 intelligent traffic light it is characterised in that also include the second diode and 3rd diode, its low electrode is connected to the 3rd field effect transistor and high electrode ground connection.

6., it is characterised in that described led array, it is total for a kind of intelligent traffic light of low-power consumption according to claim 1 Power is less than 60 watts.