Automatic electric-saving voltage-stabilizing controller for road lamp
The present invention relates to the battery saving arrangement of place street lighting lamps such as a kind of road, square, harbour.
At present, mostly the battery saving arrangement of street lamp is to light automatically at night, and daybreak automatically shuts down thinks hard, and does not also carry out energy-conservation device at the street lamp duration of work.As everyone knows, about zero point in the late into the night, because factory's power load alleviates, resident's rest of turning off the light in addition, at this moment the voltage of power line road network is higher, can reach more than 250 volts sometimes.Like this, higher because of voltage, the burnout phenomenon of street lamp bulb and rectifier thereof is quite serious, has significantly reduced their useful life, results in hand cramps to the maintenance personal, and social traffic safety and social security are caused harmful effect.At present, some area is in order to economize on electricity and to protect bulb and rectifier, and the form of turning off a side is adopted in road lighting during the late into the night; the employing that also has is every the form of the bright lamp of small cup; even have street lamp is all turned off, so just lose the function and significance of street lamp, unfavorable to social security and night traffic safety.Can realize that this just needs to increase raw material and staff's workload, suffers a loss economically, finally can only reach purpose of energy saving, still can't resolve the problem that burns out bulb and rectifier in the form of the bright lamp of small cup, must increasing a loop.
Purpose of the present invention is exactly in order to address the above problem, provide a kind of simple and practical, can economize on electricity and can not burn out the automatic electric-saving voltage-stabilizing controller for road lamp of bulb and rectifier.
Technical solution of the present invention:
A kind of automatic electric-saving voltage-stabilizing controller for road lamp, it includes power circuit, timing circuit, switching circuit, before midnight control circuit, time after midnight control circuit, voltage stable circuit, circuits for triggering and street lamp major loop, wherein power circuit is made up of transformer 1, bridge rectifier diode 4-7, electric capacity 16, integrated package of pressure-stabilizing 49 (model is 7812), and level timing circuit, switching circuit, circuits for triggering and each control circuit provide power supply backward for it; Timing circuit is by resistance 26,27, potentiometer 46, electric capacity 17,21, diode 8, the time base integrated package 50 (model is 555) form, switching circuit is made of transistor 53 and electric power quartz clock (model is SDK-2) normally-closed contact 51; Before midnight, control circuit was by resistance 28,29,30, the delay circuit that diode 9, electric capacity 18, transistor 54 constitute and by resistance 36, and transistor 56, the switch amplifying circuit that diode 11,12 constitutes is formed; The time after midnight, control circuit was by transistor 55, resistance 31, the delay circuit that electric capacity 19 constitutes, by resistance 32,34,37, transistor 57, the relay switching circuit that relay 61 constitutes and form by the switching circuit that diode 10, resistance 30,35, transistor 58 constitute; Voltage stable circuit is by resistance 38-41,43,44, potentiometer 47,48, and voltage stabilizing didoe 13,14, electric capacity 23 is formed; Circuits for triggering are by double-base diode 15, electric capacity 22,24, and resistance 42 is formed; The street lamp major loop is by each street lamp 63,64 ... N, and rectifier 65,66 separately ... N
2Piezo-resistance 45, bidirectional triode thyristor 59, electric power quartz clock (SDK-2) normally opened contact 52 is formed, the power firestreak L that it is characterized in that the street lamp major loop is connected with the elementary of transformer 1 in the power circuit by electric power quartz clock normally opened contact 52, the output of timing circuit is drawn the base stage input that connects transistor 53 switching circuit from the output of time base integrated package 50, electric power quartz clock normally-closed contact 51 is attempted by the collection of transistor 53 in the switching circuit, between the emitter-base bandgap grading, its output is drawn the end that the input that connects the control circuit at midnight is a resistance 28 its delay circuit from the emitter-base bandgap grading of transistor 53, the output of delay circuit is drawn from the emitter-base bandgap grading of transistor 54 and is connect that the input of switching circuit is the positive pole of diode 10 control circuit time after midnight in the before midnight control circuit, before midnight control circuit the negative pole of output diode 11 from its switch amplifying circuit to draw with the input of circuits for triggering be that an end of double base diode 15 is connected, its is that the mid point of resistance 39 and electric capacity 22 is connected with the input of voltage stable circuit again simultaneously, the time after midnight, the output of control circuit was sent from the normally opened contact 62 of its relay switching circuit repeat circuit 61, normally opened contact 62 1 ends and the output of voltage stable circuit are that an end of resistance 43 is connected, the other end is by electric capacity 24, resistance 42 is connected with the control utmost point of controllable silicon 59 in the street lamp major loop, the anode of controllable silicon 59 directly meets power firestreak L, its negative electrode connects each street lamp 63,64 ... N, an end, the other end of each street lamp and rectifier 65 separately, 66 ... N
2An end connect, their other end all is connected with zero-power line E.
The present invention adopts integrated circuit to replace existing A.C. contactor, oil switch etc. that contact making device is arranged, it is at dead of night at day will moving in the street lamp input economize on electricity loop of voltage regulation automatically, both saved electric energy, do not burn out bulb and rectifier again, prolonged the useful life of bulb and rectifier greatly, have be active in one's movements, safe and reliable, cost is low, the power saving rate advantages of higher, can economize on electricity about 23-30%, can be widely used in illumination such as road, square, harbour place.
Fig. 1 is an electrical schematic diagram of the present invention.
As Fig. 1, electric power quartz clock normally opened contact 52 is in the every night of auto-closing, at day automatic disconnection at dark, time can be decided by artificial adjustment, electric power quartz clock normally-closed contact 51 is in closure 10 o'clock every days, and automatic disconnection when the late into the night is zero also can be by manually setting up as required.When electric power quartz clock normally opened contact at dark 52 is closed, power transformer 1 is elementary to have electric current to flow through, level induces electric current secondarily, through bridge rectifier diode 4-7 rectification, after electric capacity 16 filtering and integrated package of pressure-stabilizing 49 voltage stabilizings, again through electric power quartz clock normally-closed contact 51, resistance 28, diode 9 is to electric capacity 18 chargings, make transistor 54,56 saturation conductions, this moment transistor 56 collector electrodes, equivalent resistance is very little between emitter, be equivalent to low resistance resistance and diode 11,12 the series connection after again with resistance 38,39, potentiometer 47 parallel connections, connect with electric capacity 22 again, to double base diode 15 trigger output voltages, make bidirectional triode thyristor 59 conducting in the complete period of alternating current, bidirectional triode thyristor 59 tube voltage drops are less than 1 volt.Lighting bulb 63,64...N1 and rectifier separately 65 thereof, 66...N2 are lighted under total head (220 volts) at this moment.To during late into the night zero, electric power quartz clock normally-closed contact 51 automatic disconnections (break-make of this contact is by the control of SDK-2 electric power quartz clock internal timing adjuster), the charge circuit of electrochemical capacitor 18 is disconnected, transistor 54 base currents can only lean on the electric energy that stores on the electrochemical capacitor 18 to provide, and progressively descend in time.Equally, the voltage on the resistance 30 constantly increases, and the bidirectional triode thyristor 59 control utmost points trigger phase shifting angle also along with reducing.Because resistance 30 and 36 negative feedback, this process are slowly and more uniform.After ten minutes, the voltage on the electrochemical capacitor 18 is very low, that the equivalent resistance between transistor 56 collector and emitters is tending towards is infinitely great (→ ∞), bidirectional triode thyristor 59 can only lean on resistance 38,39, and potentiometer 47 and electric capacity 22 phase-shifting voltages come triggering and conducting.For guaranteeing that illuminating lamp and rectifier both end voltage zero are 180 volts up to daybreak at dead of night, should before product export of the present invention, regulate, on workbench, invention product output L, E are inserted the inductance type variable regulator before promptly dispatching from the factory, and regulate the resistance of the potentiometer 47 in the product of the present invention or the appearance value of electric capacity 22, can guarantee that illuminating lamp and rectifier both end voltage zero are 180 volts up to daybreak at dead of night.Because the voltage of resistance 30 descends, transistor 58 base voltages are also descending, equivalent resistance between collector and emitter constantly increases, and transistor 57 base currents will constantly increase and make its saturation conduction (its base current is by resistance 32,37 dividing potential drops after resistance 34 flows through and conducting).So make relay 61 adhesives, its normally opened contact 62 closures.When network voltage descended or raise, voltage was along with descending and raising between resistance 43 and the relay normally open contact 62.Because the effect of voltage-stabiliser tube 13,14, the voltage between resistance 38 and electric capacity 22 remains unchanged.So networking voltage L, E raise, resistance 43 both end voltage also raise, and the electric current that flows to double base diode 15 is little, and the bidirectional triode thyristor 59 phase shift angles of flow are little.Otherwise resistance 43 both end voltage descend, and the electric current that flows to double base diode 15 is big, and the angle of flow of bidirectional triode thyristor 59 is big, has played the effect of burning voltage.Be provided with in the circuit by transistor 55, resistance 31, the delay circuit that electric capacity 19 is formed, treat transistor 54,56,58 conductings after, transistor 55 just conductings, like this, transistor 57 is ended, illuminating lamp 63,64 ... N is lighted under total head, at dead of night zero up to daybreak the illuminating lamp both end voltage be 180 volts, be in the voltage regulation operation state that economizes on electricity.If for a certain reason, if when after this section causes power failure in the period, switching on again, resistance 26,27, potentiometer 46, electric capacity 17,21, diode 8 and Shi Ji integrated package 50 are formed timing circuit, make transistor 53 in saturable conductings in about 10 minutes of energising again, treat illuminating lamp 63,64 ... N, by 220 volts of voltages light the back and end.The rear lighting lamp both end voltage drops to again about 180 about 10 minutes, is in economize on electricity voltage regulation operation state.Light-emitting diode 2 and resistance 25 series connections are power supply indicator in the circuit on the secondary coil of transformer 1; Be connected on the relay coil 61 after light-emitting diode 3 and resistance 33 series connection, be economize on electricity voltage stabilizing indicator light.
Like this, the present invention is many according to power network user in evening, the characteristics that night is less, and people's eyes to the long adaptive capacity of dark be just when dark 70%, during late into the night zero about, the pedestrian seldom, street lamp does not need too bright, thus make street lamp at night by 220 volts of network supplies (this moment network voltage can be too not high), and to during late into the night zero after, street lamp is thrown light on by the 180V stabilized voltage power supply of voltage stable circuit output, and this is to not only economizing on electricity but also can not burning out the purpose of bulb and rectifier.