AU2017100300A4 - Two-Way Two-Line Light Control Circuit - Google Patents

Description

1 2017100300 15 Mar 2017

Two-Way Two-Line Light Control Circuit

TECHNICAL FIELD

[001] The utility model relates to a control circuit, in particular a two-way two-line light control circuit.

BACKGROUND

[002] Tripping often occurs in the existing two-way two-line control circuit due to overload, thus affecting the operation of street lamps and other lighting devices, meanwhile this type of power cut through tripping is easy to make a single-chip microcomputer reset, resulting in disordered time control and easily posing a safety hazard.

SUMMARY OF UTILITY MODEL

[003] The utility model aims to provide a two-way two-line light control circuit, so as to solve the problems raised in the background art.

[004] To achieve the above purpose, the utility model provides the following technical scheme: [005] A two-way two-line light control circuit comprises an A/D stabilized-voltage isolated switching power supply module, a full-bridge drive circuit module and a lighting control module, and is characterized in that the full-bridge drive circuit module consists of triodes Q2-Q5, wherein the triode Q2 and triode Q4 are connected in series and are then respectively connected with the triode Q3 and triode Q5 in parallel, the base electrode of the triode Q4 is respectively connected to one terminal of the resistor R15 and that of the resistor R16, the base electrode of the triode Q5 is respectively connected with one terminal of the resistor R14 and that of the resistor R17, and the other terminal of the resistor R15, the emitter electrode of the triode Q4, 2 2017100300 15 Mar 2017 the other terminal of the resistor R14 and the emitter electrode of the triode Q5 are all connected to a high-voltage wire (HV), and both terminals of the high-voltage wire are respectively the high-voltage input terminal (INPUT) and the high-voltage output terminal (OUT), the other terminal of the resistor R16 and the collector electrode of the triode Q5 are connected to the output terminal (OU2) of LED2, the other terminal of the resistor R17 and the collector electrode of the triode Q4 are connected to the output terminal (OU1) of LED 1; the positively and negatively connected two-line LED string lights are respectively connected to the output terminal (OU1) of LED 1 and the output terminal (OU2) of LED2, so as to realize two-line circuit control; the collector electrode of the triode Q2 is connected to the pin 5 of the single-chip microcontroller U2 after being connected with the resistor R19 in series, the collector electrode of the triode Q3 is connected to the pin 6 of the single-chip microcontroller U2 after being connected with the resistor R18 in series, and meanwhile the emitter electrode of the triode Q2 and the emitter electrode of the triode Q3 are all grounded; the input terminal (INPUT) of the high-voltage wire (HV) is connected with the output coil of a transformer Tl, the input terminal of the transformer T1 is connected with the A/D stabilized-voltage isolated switching power supply module; a capacitor C3 and a capacitor C4 which are connected in parallel are connected between the output coil of the transformer Tl and the full bridge drive circuit module, one terminal of the capacitor C3 and that of the capacitor C4 are connected to the voltage-voltage wire (HV) and are connected with a diode D7, and the capacitor C8 and the resistor R9 are connected in parallel at two terminals of the diode D7; the lighting control module comprises a single-chip microcontroller U2, the fourth pin of the single-chip microcontroller U2 is connected to one terminal of a switch (SW1), the other terminal of the switch (SW1) is grounded; the eighth pin of the single-chip microcontroller U2 is connected to one terminal of a zener diode (ZD1) and that of the capacitor C9 which are connected in parallel, and the other terminals of the zener diode (ZD1) and the capacitor C9 are connected to one terminal of the resistor R10, and the other terminal of the resistor R10 is connected to the high-voltage wire (HV). 3 2017100300 15 Mar 2017 [006] The utility model further adopts the scheme: the second pin of the single-chip microcontroller U2 is connected with the resistor Rll and the crystal oscillator CDS1 in series, and is connected to the third pin of the single-chip microcontroller U2, the second pin and the third pin of the single-chip microcontroller U2 are respectively connected to one terminal of the capacitor C12 (R12) and that of the capacitor C13 (R13), the other terminal of the capacitor C12 (R12) and that of the capacitor C13 (R13) are grounded, the resistor Rll is a 0 ohm resistor, the capacitance of the capacitor C12 is 15PF, and the capacitance of the capacitor C13 is 20PF.

[007] The utility model further adopts the scheme: the first pin of the single-chip microcontroller U2 is sequentially connected with the resistor R20, the photoresistor or the photodiode CD SI in series and is then connected to the third pin of the single-chip microcontroller U2, the second pin of the single-chip microcontroller U2 is connected to the resistor R13 and is then grounded, the photoresistor or the photodiode CDS1 and the switch SW1 are all grounded, meanwhile the resistance of the resistor R20 is 0 ohm, and the resistance of the resistor R12 and the resistor R13 is 5-100 kilohms.

[008] The utility model further adopts the scheme: the first pin and the second pin of the single-chip microcontroller U2 are respectively connected with the positive-electrode terminal of the photoresistor or the photodiode CDS1 through the resistor R20 and the resistor R13, the negative-electrode terminal of the photoresistor or the photodiode CDS1 is connected to the third pin of the single-chip microcontroller U2 and is then grounded via the series resistor R12, the resistance of the resistor R20 is 0 ohm, and the resistance of the resistor R12 and the resistor R13 is 5-100 kilohms.

[009] Compared with the prior art, the utility model has the beneficial effects that: turn-on of the positively and negatively connected two-line LED string lights in the utility model are controlled, the stabilized-voltage switching power supply and the controller are made on a same circuit board, and by utilizing output through the 4 2017100300 15 Mar 2017 full-bridge drive circuit module and single-chip microcomputer control of changes in positive and negative output voltage of four triodes, the positively and negatively connected two-line LED string lights of customers are turned on; and compared with the traditional two-way three-line string lights, one copper supply wire can be omitted during manufacturing of the positively and negatively connected two-line (two-way two-line) LED string lights, meanwhile, the controller and the power supply are integrated, so as to save energy.

BRIEF DESCRIPTION OF DRAWINGS

[010] Figure 1 is a schematic diagram of the structure of the utility model.

[011] Figure 2 is a circuit connection diagram with the timed control function via the crystal oscillator in the utility model.

[012] Figure 3 is a circuit connection diagram with the light control and time control functions in the utility model.

[013] Figure 4 is a circuit connection diagram with the light control function in the utility model.

DESCRIPTION OF EMBODIMENTS

[014] In combination with the attached figures in the embodiment of the utility model below, the technical scheme of the embodiment of the utility model is clearly and completely described, apparently, the described embodiment is merely part rather than all of the embodiments of the utility model. Based on the embodiment in the utility model, all the other embodiments of the utility model obtained by the ordinary skill workers in this field without making creative efforts are within the scope of protection of the utility model.

[015] See Figure 1-4. In the embodiment of the utility model, a two-way two-line 5 2017100300 15 Mar 2017 light control circuit comprises an A/D stabilized-voltage isolated switching power supply module, a full-bridge drive circuit module and a lighting control module, and is characterized in that the full-bridge drive circuit module consists of triodes Q2-Q5, wherein the triode Q2 and triode Q4 are connected in series and are then respectively connected with the triode Q3 and triode Q5 in parallel, the base electrode of the triode Q4 is respectively connected to one terminal of the resistor R15 and that of the resistor R16, the base electrode of the triode Q5 is respectively connected with one terminal of the resistor R14 and that of the resistor R17, and the other terminal of the resistor R15, the emitter electrode of the triode Q4, the other terminal of the resistor R14 and the emitter electrode of the triode Q5 are all connected to a high-voltage wire (HV), and both terminals of the high-voltage wire are respectively the high-voltage input terminal (INPUT) and the high-voltage output terminal (OUT), the other terminal of the resistor R16 and the collector electrode of the triode Q5 are connected to the output terminal (OU2) of LED2, the other terminal of the resistor R17 and the collector electrode of the triode Q4 are connected to the output terminal (OU1) of LED1; the positively and negatively connected two-line LED string lights are respectively connected to the output terminal (OU1) of LED 1 and the output terminal (OU2) of LED2, so as to realize two-line circuit control; the collector electrode of the triode Q2 is connected to the fifth pin of the single-chip microcontroller U2 after being connected with the resistor R19 in series, the collector electrode of the triode Q3 is connected to the sixth pin of the single-chip microcontroller U2 after being connected with the resistor R18 in series, and meanwhile the emitter electrode of the triode Q2 and the emitter electrode of the triode Q3 are all grounded; and through the full-bridge drive circuit module, the voltage during turn-on and turn-off of the stably and externally connected light strings is stable, thus the external light circuit can be protected; [016] The input terminal (INPUT) of the high-voltage wire (HV) is connected with the output coil of the transformer Tl, the input terminal of the transformer T1 is connected with the A/D stabilized-voltage isolated switching power supply module, 6 2017100300 15 Mar 2017 wherein the A/D stabilized-voltage isolated switching power supply module adopts the prior art and is not described here; the capacitor C3 and the capacitor C4 which are connected in parallel are connected between the output coil of the transformer T1 and the full bridge drive circuit module, one terminal of the capacitor C3 and that of the capacitor C4 are connected to the voltage-voltage wire (HV) and are connected with the diode D7, and the capacitor C8 and the resistor R9 are connected in parallel at two terminals of the diode D7; and interference on operation of the control circuit can be prevented through noise elimination in the circuit by the capacitor C3 and the capacitor C4; [017] The lighting control module comprises the single-chip microcontroller U2, the fourth pin of the single-chip microcontroller U2 is connected to one terminal of a switch (SW1), the other terminal of the switch (SW1) is grounded; the eighth pin of the single-chip microcontroller U2 is connected to one terminal of a zener diode (ZD1) and that of the capacitor C9 which are connected in parallel, and the other terminals of the zener diode (ZD1) and the capacitor C9 are connected to one terminal of the resistor R10, and the other terminal of the resistor R10 is connected to the high-voltage wire (HV), so as to provide operational power supply to the single-chip microcontroller U2, and stable operation of the single-chip microcontroller U2 can be guaranteed by utilizing the zener diode ZD1; [018] Further, the second pin of the single-chip microcontroller U2 is connected with the resistor Rll and the crystal oscillator CDS1 in series, and is connected to the third pin of the single-chip microcontroller U2, the resistance of the resistor Rll is 0 ohm, the second pin and the third pin of the single-chip microcontroller U2 are respectively connected to one terminal of the capacitor C12 (R12) and that of the capacitor C13 (R13), the other terminal of the capacitor C12 (R12) and that of the capacitor C13 (R13) are grounded, the capacitance of the capacitor C12 is 15PF, and the capacitance of the capacitor C13 is 20PF.

[019] Further, the first pin of the single-chip microcontroller U2 is sequentially 7 2017100300 15 Mar 2017 connected with the resistor R20, the photoresistor or the photodiode CDS1 in series and is then connected to the third pin of the single-chip microcontroller U2, the second pin of the single-chip microcontroller U2 is connected to the resistor R13 and is then grounded, the photoresistor or the photodiode CDS1 and the switch SW1 are all grounded, meanwhile the resistance of the resistor R20 is 0 ohm, and the resistance of the resistor R12 and the resistor R13 is 5-100 kilohms, thus light-controlled priority start can be achieved, i.e. the mode of 8-hour lighting + 14-hour shutdown of the control circuit + 2-hour inductive cycle light/time control.

[020] Further, the first pin and the second pin of the single-chip microcontroller U2 are respectively connected with the positive-electrode terminal of the photoresistor or the photodiode CDS1 through the resistor R20 and the resistor R13, the negative-electrode terminal of the photoresistor or the photodiode CDS1 is connected to the third pin of the single-chip microcontroller U2 and is then grounded via the series resistor R12, the resistance of the resistor R20 is 0 ohm, the resistance of the resistor R12 and the resistor R13 is 5-100 kilohms, and simple light control function can be achieved.

[021] For the technical personnel in this field, the utility model is clearly not limited to the details of the exemplary embodiment above, and can be achieved in other specific forms without deviating from the spirit or the basic characteristics of the utility model.

[022] Therefore, the embodiment shall be considered as an exemplary embodiment from any point of view and is thus not limited, the scope of the utility model is defined by the claims herein rather than the foregoing description, and all changes in the meaning and scope of the equivalent requirements falling within the claims are included in the utility model.

[023] Any reference sign in the claims should not be deemed to restrict the involved claims. 2017100300 15 Mar 2017 8 [024] In addition, it should be understood that although the publication is described according to the embodiment, not every embodiment only contains one single technical scheme, description of this publication only serves for clarity, the technical personnel in this field shall take the publication as a whole, the technical schemes in all embodiments may be appropriately combined, to form other embodiments which can be understood by the technical personnel in this field.

Claims (4)

1. A two-way two-line light control circuit comprises an A/D stabilized-voltage isolated switching power supply module, a full-bridge drive circuit module and a lighting control module, and is characterized in that the aforesaid full-bridge drive circuit module consists of triodes Q2-Q5, of which the triode Q2 and triode Q4 are connected in series and respectively connected in parallel with the triode Q3 and triode Q5, the base electrode of the aforesaid triode Q4 is respectively connected to one terminal of the resistor R15 and that of the resistor R16, the base electrode of the triode Q5 is respectively connected with one terminal of the resistor R14 and that of the resistor R17, and the other terminal of the aforesaid resistor R15, the emitter electrode of the triode Q4, the other terminal of the resistor R14 and the emitter electrode of the triode Q5 are all connected to a high-voltage wire (HV), both terminals of which are respectively the high-voltage input terminal (INPUT) and the high-voltage output terminal (OUT); the other terminal of the aforesaid resistor R16 and the collector electrode of the triode Q5 are all connected to the output terminal (OU2) of LED2, the other terminal of the resistor R17 and the collector electrode of the triode Q4 are all connected to the output terminal (OU1) of LED 1; the positively and negatively connected two-line LED string lights are respectively connected to the output terminal (OU1) of LED1 and the output terminal (OU2) of LED2, so as to realize two-line circuit control; the collector electrode of the aforesaid triode Q2 is connected to the fifth pin of the single-chip microcontroller U2 after connected in series with the resistor R19, the collector electrode of the triode Q3 is connected to the sixth pin of the single-chip microcontroller U2 after connected in series with the resistor R18, and meanwhile the emitter electrode of the triode Q2 and that of the triode Q3 are all grounded; the input terminal (INPUT) of the aforesaid high-voltage wire (HV) is connected with the output coil of a transformer Tl, the input terminal of the aforesaid transformer Tl is connected with the A/D stabilized-voltage isolated switching power supply module; a capacitor C3 and a capacitor C4 which are connected in parallel are connected between the output coil of the aforesaid transformer T1 and the full bridge drive circuit module, one terminal of the capacitor C3 and that of the capacitor C4 are connected to the voltage-voltage wire (HV) and are connected with a diode D7, and the capacitor C8 and the resistor R9 are connected in parallel at two terminals of the aforesaid diode D7; the aforesaid lighting control module comprises of a single-chip microcontroller U2, the fourth pin of the single-chip microcontroller U2 is connected to one terminal of a switch (SW1), the other terminal of the switch (SW1) is grounded; the eighth pin of the aforesaid single-chip microcontroller U2 is connected to one terminal of a zener diode (ZD1) and that of the capacitor C9 which are connected in parallel, and the other terminals of the zener diode (ZD1) and the capacitor C9 are connected to one terminal of the resistor RIO, and the other terminal of the resistor RIO is connected to the high-voltage wire (HV).

2. A two-way two-line light control circuit as described in claim 1 is characterized in that the second pin of the aforesaid single-chip microcontroller U2 is connected in series with the resistor Rll and a crystal oscillator CDS1, and is connected to the third pin of the single-chip microcontroller U2, the second pin and the third pin of the aforesaid single-chip microcontroller U2 are respectively connected to one terminal of the capacitor C12 (R12) and that of the capacitor C13 (R13), the other terminal of the capacitor C12 (R12) and that of the capacitor C13 (R13) are grounded, the aforesaid resistor Rll is a 0 ohm resistor, the capacitance of the aforesaid capacitor C12 is 15PF, and the capacitance of the capacitor C13 is 20PF.

3. A two-way two-line light control circuit as described in claim 1 is characterized in that the first pin of the aforesaid single-chip microcontroller U2 is sequentially connected in series with the resistor R20, a photoresistor or a photodiode CDS1 and then connected to the third pin of the single-chip microcontroller, the second pin of the aforesaid single-chip microcontroller U2 is connected to the resistor R13 before it is grounded, the aforesaid photoresistor or photodiode CDS1 and the switch SW1 are all grounded, meanwhile the resistance of the resistor R20 is 0 ohm, and the resistance of the resistor R12 and of the resistor R13 is 5-100 kilohms.

4. A two-way two-line light control circuit as described in claim 1 is characterized in that the first pin and the second pin of the aforesaid single-chip microcontroller U2 are respectively connected with the positive-electrode terminal of the photoresistor or the photodiode CDS1 through the resistor R20 and the resistor R13, the negative-electrode terminal of the aforesaid photoresistor or photodiode CDS1 is connected to the third pin of the single-chip microcontroller U2 and then grounded via a series resistor R12, the resistance of the aforesaid resistor R20 is 0 ohm, and the resistance of the resistor R12 and of the resistor R13 is 5-100 kilohms.