CN207321585U - A kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire - Google Patents

Abstract

The utility model discloses a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, including switching circuit, take electrical circuit, relay be reliably attracted with low-power consumption holding circuit, power on charge circuit, Voltage stabilizing module U1 and microcontroller U2, wherein the pin 3 of switching circuit, pin 4, pin 5 respectively with alternating current firewire, fire line, take electrical circuit to be connected；Power on charge circuit with alternating current firewire to be connected, power on charge circuit and take the output terminal of electrical circuit to be each connected with Voltage stabilizing module U1, Voltage stabilizing module U1 is connected with microcontroller U2；Microcontroller U2 and relay are reliably attracted to be connected with low-power consumption holding circuit, and relay is reliably attracted the relay REL1 both ends being connected with low-power consumption holding circuit in switching circuit.The utility model has reliable using true fire-fighting function, while solves the problems such as lamp brightness flicker, it is energy saving the features such as.

Description

A kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire

Technical field

Single firewire delay switch technical field is the utility model is related to, more specifically, being related to one kind prevents that single firewire is true The circuit of fire-fighting delay switch lamp brightness flicker.

Background technology

Single firewire delay switch, using equipped with the LED light of minimum power or other species lamps and lanterns, by extensive corridor cell, Toilet, basement etc. illuminate, usually in the application of true fire-fighting function, generally in order to adapt to the spy of the low operating current of 3W lamps and lanterns Point, true fire-fighting electronic switch internal are generally provided that 24V relays are connected power-supply circuit with conventional controllable silicon voltage regulator diode, the string Connection power-supply circuit is easy to cause that lamps and lanterns both end voltage stability is poor, and classical tandem takes electrical circuit, the shakiness of silicon controlled trigger current It is fixed, cause load both end voltage change irregular, so that the problem of causing true fire-fighting delay switch lamp brightness flicker.

The content of the invention

The utility model is intended to solve at least some of the technical problems in related technologies.For this reason, this reality It is to propose a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire with a new purpose, the one kind is anti- The only circuit of the true fire-fighting delay switch lamp brightness flicker of single firewire, has and uses true fire-fighting function reliable, while solves lamps and lanterns The problems such as brightness flicker, it is energy saving the features such as.

In some embodiments of the utility model, described one kind prevents the true fire-fighting delay switch lamp brightness flicker of single firewire Circuit, including switching circuit, take electrical circuit, relay reliably be attracted with low-power consumption holding circuit, power on charge circuit, voltage stabilizing The pin 3 of module U1 and microcontroller U2, wherein switching circuit, pin 4, pin 5 respectively with alternating current firewire, fire line, take electricity to return Road is connected；Charge circuit is powered on alternating current firewire to be connected, power on charge circuit and take the output terminal of electrical circuit each with voltage stabilizing mould Block U1 is connected, and Voltage stabilizing module U1 is connected with microcontroller U2；Microcontroller U2 and relay are reliably attracted and low-power consumption holding circuit phase Even, relay is reliably attracted the relay REL1 both ends being connected with low-power consumption holding circuit in switching circuit.

Further, the switching circuit is cut for the firewire that one group of normally-open normally-close contact relay is formed with fire-fighting alternative Change circuit.

Further, it is described to take electrical circuit by rectifier bridge BRG1, silicon-controlled T1, silicon-controlled T2, resistance R7, resistance R8, list Formed to voltage-stabiliser tube Z2, diode DA, diode DB, diode D3, diode D4, electrolytic capacitor E4 series-connection power supplies, rectifier bridge The pin 3 with switching circuit, load are connected respectively at two AC ends of BRG1, the V+ pins of rectifier bridge BRG1, diode DA, two poles Pipe DB, silicon-controlled T1, the V- pins of rectifier bridge BRG1 are sequentially connected, the V+ pins of rectifier bridge BRG1, resistance R7, silicon-controlled T2, The control pole of silicon-controlled T1 is sequentially connected, the control of the input terminal, resistance R8, unidirectional voltage-stabiliser tube Z2, silicon-controlled T2 of silicon-controlled T2 Pole is sequentially connected；V+ pins, diode D3, diode D4, electrolytic capacitor E4, the V- pins of rectifier bridge BRG1 of rectifier bridge BRG1 It is sequentially connected；The anode of diode D4, resistance R10, diode D5, the VIN ends of Voltage stabilizing module U1 are sequentially connected.

Further, the silicon-controlled T1 current specifications are more than the silicon-controlled T2 current specifications.

Further, the relay is reliably attracted with low-power consumption holding circuit by relay REL1, diode D2, resistance R1, resistance R2, electrolytic capacitor E1, triode Q1 are formed, wherein external power supply+24V, relay REL1, resistance R1, triode Q1, zero curve are sequentially connected, and diode D2 is in parallel with relay REL1, and electrolytic capacitor E1 is in parallel with resistance R1, the base of triode Q1 Pole is connected by resistance R2 with the PA5 pins of microcontroller U2.

Further, the relay REL1 is 24v relays.

The beneficial effects of the utility model are：

A kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire of the utility model, passes through touching for relay Point, when realization is supported on holding state, with being directly connected to for fire-fighting firewire, circuit after charging complete is powered on first, city's electrical fire Line does not have circuit to be connected substantially with fire-fighting firewire, and in normal work, relay is switched to alternating current zero line, fire-fighting terminal contacts Vacantly, the full isolation features of true fire-fighting are realized；Delay switch is during unlatching, it is still desirable to which power supply is supplied, this circuit passes through rectification Bridge, silicon-controlled, voltage-stabiliser tube, diode and big capacity electrolyte capacitor, realize alternating current circuit zero crossing series connection current-taking function, circuit Without externally fed, and power good, influenced from bearing power size；The source current of low power load is smaller, passes through Series connection takes electrical circuit, and when which flows through 24V relay coils, coil both end voltage is relatively low, the partial circuit relay coil Electric current first passes around the electrolysis for being connected in parallel on resistance both ends, reliable to drive relay to be attracted, afterwards as electrolysis is electrically charged, both ends electricity The rise of pressure, has also raised energy storage electrolytic capacitor both end voltage, while solves relay and be reliably attracted for the first time with being drawn during work The function of high energy storage decomposition voltage.

At the same time by the silicon-controlled compound mode of current specification, forming one can be with very little current trigger, very little dimension Electric current is held, and the Darlistor function of heavy current impact can be born, while by diode DA, the addition of diode DB, Be to prevent big silicon-controlled T1 conductings after, drag down terminal voltage, cause small thyristor to be closed, the two diodes can also use bridge heap Instead of voltage-stabiliser tube can also can be replaced with TVS pipe, and resistance R8 can be replaced with conducting wire.

Brief description of the drawings

Fig. 1 is a kind of structural representation for the circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire of the utility model Figure.

Fig. 2：For a kind of function knot for the circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire of the utility model Structure schematic diagram.

Embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on shown in the drawings Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply signified dress Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two It is a, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this area For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.

As shown in Figs. 1-2, a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, including switching electricity Road, take the reliable actuation of electrical circuit, relay and low-power consumption holding circuit, power on charge circuit, Voltage stabilizing module U1 and microcontroller U2, Wherein the pin 3 of switching circuit, pin 4, pin 5 respectively with alternating current firewire, fire line, take electrical circuit to be connected；Power on and charge back Road is connected with alternating current firewire, powers on charge circuit and takes the output terminal of electrical circuit to be each connected with Voltage stabilizing module U1, Voltage stabilizing module U1 is connected with microcontroller U2；Microcontroller U2 and relay are reliably attracted to be connected with low-power consumption holding circuit, and relay is reliably attracted The relay REL1 both ends being connected with low-power consumption holding circuit in switching circuit.

Further, switching circuit is the firewire that one group of normally-open normally-close contact relay is formed and fire-fighting alternative switching electricity Road.

Further, electrical circuit is taken by rectifier bridge BRG1, silicon-controlled T1, silicon-controlled T2, resistance R7, resistance R8, unidirectional steady Pressure pipe Z2, diode DA, diode DB, diode D3, diode D4, electrolytic capacitor E4 series-connection power supplies are formed, rectifier bridge BRG1 Two AC ends respectively the pin 3 with switching circuit, load be connected, V+ pins, diode DA, the diode of rectifier bridge BRG1 DB, silicon-controlled T1, the V- pins of rectifier bridge BRG1 are sequentially connected, the V+ pins of rectifier bridge BRG1, resistance R7, silicon-controlled T2, can The control pole of control silicon T1 is sequentially connected, the input terminal of silicon-controlled T2, resistance R8, unidirectional voltage-stabiliser tube Z2, the control pole of silicon-controlled T2 It is sequentially connected；The V+ pins of rectifier bridge BRG1, diode D3, diode D4, electrolytic capacitor E4, rectifier bridge BRG1 V- pins according to It is secondary to be connected；The anode of diode D4, resistance R10, diode D5, the VIN ends of Voltage stabilizing module U1 are sequentially connected.

Further, silicon-controlled T1 current specifications are more than the silicon-controlled T2 current specifications.

Further, relay reliably be attracted with low-power consumption holding circuit by relay REL1, diode D2, resistance R1, Resistance R2, electrolytic capacitor E1, triode Q1 are formed, wherein external power supply+24V, relay REL1, resistance R1, triode Q1, zero Line is sequentially connected, and diode D2 is in parallel with relay REL1, and electrolytic capacitor E1 is in parallel with resistance R1, and the base stage of triode Q1 passes through Resistance R2 is connected with the PA5 pins of microcontroller U2.

Further, relay REL1 is 24v relays.

Operation principle is as follows：Pass through diode D1, lamp LED1, resistance R3, resistance R4, resistance R5, resistance R6, unidirectional voltage stabilizing Pipe Z1, triode Q2, triode Q3, diode D6, what electrolytic capacitor E3 was formed successively powers on charge circuit, after the power-up, fast Speed gives electrolytic capacitor E3, electrolytic capacitor E4 chargings, and completion powers on charge function, and power supply provides 3V power supplys to monolithic through regulator block U1 Machine U2, microcontroller U2 are responsible for detecting external key signal or sound and light signal or human infrared signal, detect that trigger signal is then driven Dynamic triode Q1, opens relay REL1, and load lamp LED1 is accessed alternating current firewire by relay REL1, meanwhile, load electricity Stream passes through rectifier bridge BRG1, diode DA, diode DB, silicon-controlled T1, silicon-controlled T2, resistance R7, resistance R8 successively, unidirectional steady Pressure pipe Z2, diode D3, diode D4, powers to electrolytic capacitor E4, then is supplied by resistance R10, diode D5 to regulator block U1 Electricity suppl, with this during delay switch is opened, circuit obtains lasting power supply supply, therefore the present invention exterior need not supply Electricity.The voltage of stabilization is provided by regulator block U1 for microcontroller U2, is carried out by capacitance C1 and capacitance C2 to powering on charge circuit Filtering, prevents alternating current firewire clutter from being had an impact to regulator block U1 power supplies；By capacitance C3, capacitance C4 and capacitance C5 to regulator block The output voltage of U1 is filtered, and prevents that load current is unstable, causes the spread of voltage for being supplied to microcontroller U2.

By adding electrolytic capacitor E1 and resistance R1 in circuit, it is possible to achieve open moment, be electrolysed in relay REL1 Capacitance E1 both ends do not have voltage, and energy storage electrolysis E4 voltages are fully loaded to relay REL1 both ends, and attracting process is reliably complete at this time Into relay REL1 is attracted magnetic circuit closure in inside when completing, and since electrolytic capacitor E1 is electrically charged, electric current can gradually be transferred to resistance R1, so as to reach the balance of voltage, terminal voltage has been raised with this, so that electrolytic capacitor E3 returns to higher voltage, has so been existed When lamp LED1 extinguishes, it is no longer necessary to charge to E3, solve light-off flicker problem.

Darlistor circuit, two diodes DA, DB, can use a rectifier bridge to replace, surely in practical applications Pressure pipe Z2 can also use two-way tvs pipes to replace, and it is all big silicon-controlled and small that resistance R8 can replace its core essence with conducting wire Silicon-controlled composition composite component, realizes small trigger current, small maintenance electric current, bears the circuit function of electric current greatly, allows lamp interior Voltage regulation changes, and improves power source change frequency so that visually observe less than brightness flicker.Pass through control pole for silicon-controlled T1 After pouring into electric current, after main electrode is connected, in the case of no diode DA and diode DB, electric current all passes through the master of silicon-controlled T1 Electrode, causes control pole not have electric current, is easy to cause the problem of silicon-controlled T1 and silicon-controlled T2 is closed.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with Combine in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this area Technical staff can by the different embodiments or example described in this specification and different embodiments or exemplary feature into Row combines and combination.

Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all Equivalent technical solution falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.

Claims (6)

1. a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, it is characterised in that described one kind prevents list The circuit of the true fire-fighting delay switch lamp brightness flicker of firewire, including switching circuit, take electrical circuit, relay reliably be attracted with low work( Consumption holding circuit, power on charge circuit, Voltage stabilizing module U1 and microcontroller U2, the wherein pin 3 of switching circuit, pin 4, pin 5 Respectively with alternating current firewire, fire line, take electrical circuit to be connected；Charge circuit is powered on alternating current firewire to be connected, power on charge circuit and The output terminal of electrical circuit is taken each to be connected with Voltage stabilizing module U1, Voltage stabilizing module U1 is connected with microcontroller U2；Microcontroller U2 and relay Device is reliably attracted to be connected with low-power consumption holding circuit, and relay is reliably attracted and is connected with low-power consumption holding circuit in switching circuit Relay REL1 both ends.

2. a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, its feature exist according to claim 1 In the switching circuit is the firewire that one group of normally-open normally-close contact relay is formed and fire-fighting alternative switching circuit.

3. a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, its feature exist according to claim 1 In described to take electrical circuit by rectifier bridge BRG1, silicon-controlled T1, silicon-controlled T2, resistance R7, resistance R8, unidirectional voltage-stabiliser tube Z2, two poles Pipe DA, diode DB, diode D3, diode D4, electrolytic capacitor E4 series-connection power supplies are formed, two AC ends point of rectifier bridge BRG1 Not and the pin 3 of switching circuit, load and be connected, it is the V+ pins of rectifier bridge BRG1, diode DA, diode DB, silicon-controlled T1, whole The V- pins of stream bridge BRG1 are sequentially connected, the V+ pins of rectifier bridge BRG1, resistance R7, silicon-controlled T2, the control pole of silicon-controlled T1 It is sequentially connected, the input terminal of silicon-controlled T2, resistance R8, unidirectional voltage-stabiliser tube Z2, the control pole of silicon-controlled T2 are sequentially connected；Rectifier bridge V+ pins, diode D3, diode D4, electrolytic capacitor E4, the V- pins of rectifier bridge BRG1 of BRG1 is sequentially connected；Diode D4 Anode, resistance R10, diode D5, the VIN ends of Voltage stabilizing module U1 be sequentially connected.

4. a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, its feature exist according to claim 1 In the relay is reliably attracted with low-power consumption holding circuit by relay REL1, diode D2, resistance R1, resistance R2, electrolysis Capacitance E1, triode Q1 are formed, and wherein external power supply+24V, relay REL1, resistance R1, triode Q1, zero curve are sequentially connected, Diode D2 is in parallel with relay REL1, and electrolytic capacitor E1 is in parallel with resistance R1, and the base stage of triode Q1 passes through resistance R2 and list The PA5 pins of piece machine U2 are connected.

5. a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, its feature exist according to claim 3 In the silicon-controlled T1 current specifications are more than the silicon-controlled T2 current specifications.

6. a kind of circuit for preventing the true fire-fighting delay switch lamp brightness flicker of single firewire, its feature exist according to claim 4 In the relay REL1 is 24v relays.