The drive unit of intelligent high-reliability
Technical field
The utility model relates to the light emitting diode road lamp technical field, relates in particular to a kind of drive unit of intelligent high-reliability.
Background technology
Plurality of advantages such as light-emitting diode (Light Emitting Diode is called for short LED) is long owing to its life-span, response speed is fast, light efficiency is strong, manufacture process is pollution-free are widely used and use in a plurality of fields of illumination rapidly.Be developed at present, the LED semiconductor lighting becomes the 4th generation road lighting product after high-pressure mercury lamp, high-pressure sodium lamp, metal halide lamp.
The great power LED that is applied in the street lamp has two big core devices: light source and driver.Light source is great power LED.Driver is power supply, and it is converted to the high-voltage alternating civil power low-voltage DC and offers LED, in the restriction output voltage, also carries out constant current control, guarantees that LED efficiently moves in the safety operation area.Through technical development for many years, at present, the design of light source itself and manufacturing technology and radiator structure thereof can reach the design and the application target of expection.And driver is owing to mostly be high frequency switch power, and inner function circuit is many, uses electrochemical capacitor in a large number, work under bad environment, in actual applications, its failure rate is high, become the bottleneck in the whole LED street lamp application, do not reached the life-span that is complementary mutually with light source.
In the existing technical scheme, there are the following problems:
One. adopt the scheme of integral body/integral type driver, it is bigger himself to generate heat, and is subjected to the light source warming-up effect bigger simultaneously, causes its working life not ensure, can not reach re-set target;
Two. all driver is installed in the lamp housing, maintenance and quite inconvenience of replacing;
Three. though realized intellectuality in the technology now, autgmentability is bad, or function singleness, can not satisfy the development trend that intelligent network and communication interface interconnect, and can not be completed optimized dynamic energy-saving control strategy.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this utility model provides a kind of intellectuality, high reliability, energy-saving LED street lamp drive unit.
The purpose of this utility model is achieved through the following technical solutions:
A kind of light emitting diode road lamp drive unit of intelligent high-reliability comprises first transducer, second transducer and expansion module, and wherein, described first transducer is used for converting external power source to be fit to late-class circuit Dc low voltage power supply; Described second transducer is used for the low-voltage DC through the conversion of first transducer further is converted to multichannel independence constant current output current; Described second transducer comprises interface, is used for being connected with described expansion module; Described expansion module be used to realize parameter detecting or with the info-communication function of system's central controller.
Described first transducer comprise with electric main convert the AC power transducer of the Dc low voltage power supply that is fit to late-class circuit to, power source conversion that solar battery group is produced becomes the solar-electricity source converter of the Dc low voltage power supply that is fit to late-class circuit or the power source conversion that wind-driven generator produces become and the wind energy power supply changeover device of the Dc low voltage power supply that late-class circuit is suitable.First transducer also can be the transducer that the power source conversion that hydroelectric power generation, tidal power generation, nuclear power generation produce is become the Dc low voltage power supply that is fit to late-class circuit.
Described first transducer and second transducer are located at the diverse location of light emitting diode road lamp respectively.The LED street lamp mainly comprises the lamp stand that is supported in ground, the lamp socket and the LED street lamp body of lamp stand upper end carrying LED street lamp body, and wherein, LED street lamp body is mainly by lamp housing be hidden in light-emitting diode in the lamp housing etc. and form.Usually lamp housing covers on the lamp socket upper end.
Described first transducer is located in the lamp stand or lamp socket of light emitting diode road lamp; Second transducer is located in the lamp housing of light emitting diode road lamp.
Described expansion module comprises transducer class expansion module and communication class expansion module.
Described a plurality of expansion module comprises parallel connection.And the expansion module of these parallel connections is discerned according to the numeric address of system assignment.
Described transducer class expansion module comprises luminance detection expansion module, temperature detection expansion module or electric current, voltage detecting expansion module.
Described communication class expansion module comprises communication interface circuit and communication protocol parser circuitry.
Described communication protocol parser circuitry comprises wireless transmission communication protocol parser circuitry, satellite transmits communication protocol parser circuitry or wire transmission communication protocol parser circuitry.
Described second transducer comprises digital interface with the interface that described expansion module is connected.
Described first transducer also can be called power supply changeover device.Second transducer also can be called DC-to-DC converter.
This drive unit can drive a plurality of led light sources simultaneously and carry out work, and its concrete quantity is decided according to the needs of concrete lamp type.The electric relatively independence of each led light source is independent of each other mutually.
Described power supply changeover device and DC-to-DC converter are positioned over different positions respectively in actual applications, usually power supply changeover device are positioned in street lamp post or the lamp socket, and DC-to-DC converter is positioned in the lamp housing.Because DC-to-DC converter conversion efficiency height, self-heating is little, inner no electrolytic capacitor or capacitance are little, but long time continuous working is in the higher environment of temperature, be positioned in the lamp housing that is subjected to the light source heat effects, its relative tolerance is stronger, and its functional reliability has obtained guarantee, and the life-span that is complementary with led light source can be arranged.Do not have other pyrotoxin in the lamp stand that power supply changeover device is placed, the lamp socket, operating ambient temperature is installed in the lamp housing lower relatively, and its internal electronic element failure rate reduces greatly, thereby, obtained higher working life.And because it is positioned in lamp stand, the lamp socket,, also can not influence traffic, not adopt and keep in repair fast under the mechanical situation that raises and change, the straight design concept that has just realized convenient for maintaining and replacing even damage is arranged.
Described expansion module, the function of its realization have two kinds.A kind of is transducer, detects parameters such as field illumination, temperature, voltage, electric current, is sent to DC-to-DC converter.Another kind is a communication module, finishes the information communication of local street lamp and system's central controller.By expansion module, realize intelligent control, thus more effective energy-conservation.
Described transducer class expansion module comprises in the module and detects first device, signal processing circuit, and logic judging circuit is with the communication interface of DC-to-DC converter.When street lamp is only installed this type of expansion module, can carry out the Based Intelligent Control of unit.
Described communication class expansion module, its essence are protocol resolver.To resolve with the communication protocol of system's central controller (main frame), taking-up information is sent to DC-to-DC converter, or the relevant information of DC to DC converter is changed by the system communication agreement, is sent to main frame.Comprise communication interface circuit in the module, the protocol analysis circuit.
The communication protocol of described communication class expansion module and system's central controller, its communication protocol according to central controller is determined.Promptly can be by wireless transmission, also can be wire transmission.When street lamp application in different systems, only need to change this module and get final product, promptly realized interconnecting in the various communication interfaces.
The interface of described expansion module and DC-to-DC converter is a digital interface, and each module is distributed an address according to its function automatically by system, thereby it is discerned.Each expansion module is obtained working power by this interface.
In sum, the LED street lamp drive unit of intelligent high-reliability of the present utility model, reached energy-conservation, intelligent and the high purpose of reliability greatly reduces the failure rate of street lamp, also passes through the extensibility of its high degree of intelligenceization and communication interface thereof, get final product the unit intelligent operation, can form remote control network again, be able to move by optimized real-time dynamic energy-saving control strategy, the utmost point has reached energy-conservation effect effectively.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a kind of execution mode structural representation of the utility model.
Embodiment
Be elaborated for light emitting diode road lamp drive unit of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of light emitting diode road lamp drive unit of intelligent energy-saving, comprise power supply changeover device, DC-to-DC converter and expansion module, wherein, described power supply changeover device is used for converting external power source to be fit to late-class circuit Dc low voltage power supply; Described DC-to-DC converter is used for the low-voltage DC through the power supply changeover device conversion further is converted to multichannel independence constant current output current; Described DC-to-DC converter comprises interface, is used for being connected with described expansion module; Described expansion module be used to realize parameter detecting or with the info-communication function of system's central controller.
Described power supply changeover device comprise with electric main convert the AC power transducer of the Dc low voltage power supply that is fit to late-class circuit to, power source conversion that solar battery group is produced becomes the solar-electricity source converter of the Dc low voltage power supply that is fit to late-class circuit or the power source conversion that wind-driven generator produces become and the wind energy power supply changeover device of the Dc low voltage power supply that late-class circuit is suitable.Power supply changeover device also can be the transducer that the power source conversion that hydroelectric power generation, tidal power generation, nuclear power generation produce is become the Dc low voltage power supply that is fit to late-class circuit.
Described power supply changeover device and DC-to-DC converter are located at the diverse location of light emitting diode road lamp respectively.
Described power supply changeover device is located in the lamp stand or lamp socket of light emitting diode road lamp; DC-to-DC converter is located in the lamp housing of light emitting diode road lamp.
Described expansion module comprises transducer class expansion module and communication class expansion module.
Described a plurality of expansion module comprises parallel connection.A plurality of expansion modules comprise expansion module 1, expansion module 2 ... expansion module N.
Described transducer class expansion module comprises that luminance detection expansion module, temperature detection expansion module or current/voltage detect expansion module.
Described communication class expansion module comprises communication interface circuit and communication protocol parser circuitry.
Described communication protocol parser circuitry comprises wireless transmission communication protocol parser circuitry, satellite transmits communication protocol parser circuitry or wire transmission communication protocol parser circuitry.
Described DC-to-DC converter comprises digital interface with the interface that described expansion module is connected.The output of the multichannel independence constant current of process DC-to-DC converter conversion directly offers led light source.A plurality of led light sources comprise LED1, LED2 ... LEDN, concrete quantity is decided as required.
Described expansion module also can abbreviate module as.
As shown in Figure 2, a kind of intellectuality, energy-saving LED street lamp drive unit. this drive unit is installed in the LED street lamp, by gathering parameters such as erecting bed brightness value, temperature value, in conjunction with the current time, led light source is carried out open and close or brightness adjustment control, and transmit to system's central controller information of carrying out by communication module, accept system's centralized control. circuit structure as shown in Figure 2:
After power supply changeover device is converted to low-voltage DC with the high-voltage alternating civil power, become four tunnel outputs by DC-to-DC converter, by the required electric current of each led light source, to its power supply.Independent constant current is exported on each road of DC-to-DC converter.
Power supply changeover device and DC-to-DC converter are placed apart, and power supply changeover device is positioned in lamp stand, the lamp socket, and DC-to-DC converter is positioned in the lamp housing.Because DC-to-DC converter conversion efficiency height, self-heating is little, and inner no electrolytic capacitor or capacitance are little, but long time continuous working is in the higher environment of temperature, be positioned in the lamp housing, its functional reliability has obtained guarantee, and the life-span that is complementary with led light source can be arranged.Do not have other pyrotoxin in the lamp stand lamp socket that power supply changeover device is placed, operating ambient temperature is installed in the lamp housing lower relatively, and its internal electronic element failure rate reduces greatly, thereby, obtained higher working life.And because it is positioned in the lamp stand lamp socket,, also can not influence traffic, not adopt and keep in repair fast under the mechanical situation that raises and change, the straight design concept that has just realized convenient for maintaining and replacing even damage is arranged.
The luminance detection module is measured the site environment illuminance, judges according to the value that sets, if illumination deficiency (as entering at dusk) is then sent " turning on light " request to DC-to-DC converter.And, the built-in real-time clock of module, if turn on light, setting-up time arrives (as 1:00 AM), then sends " light modulation " (as brightness is transferred to half) request to DC-to-DC converter.DC-to-DC converter is carried out relevant action according to request, finishes the intelligent operation of unit, effectively saves power consumption.
Voltage, current detection module detect every electric parameter of street lamp, when appearance is unusual, send " warning " signal to DC-to-DC converter, and DC-to-DC converter stops output immediately, until there being " normally " signal to respond.The detected parameters of module comprises " warning " signal, transmits to communication module with priority level and the rule determined, changes reaching system's central controller, information is provided for the intelligent platform decision-making of system.
Communication module will send DC-to-DC converter to from the order that system's central controller transmits, and be finished such as operations such as open and close, light modulations by it.Simultaneously, module also is sent to long-range system's central controller with the relevant information of local street lamp (as current brightness of above-mentioned voltage, electric current and street lamp etc.), maintenance or operating personnel need not the scene, just can recognize the street lamp state, and as required, remote monitoring in time forms an intelligent network.Because the infield RCI difference of street lamp, then change this module and get final product according to interface communications protocol and hardware requirement thereof, realize interconnecting between diverse network, satisfy real-time dynamic energy-saving fully and control.
In sum, LED street lamp drive unit of the present utility model, reached energy-conservation, intelligent and the high purpose of reliability greatly reduces the failure rate of street lamp, also passes through the extensibility of its high degree of intelligenceization and communication interface thereof, get final product the unit intelligent operation, can form remote control network again, be able to move by optimized real-time dynamic energy-saving control strategy, the utmost point has reached energy-conservation effect effectively.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.