CN110740536A - multifunctional indicator lamp control circuit - Google Patents
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- CN110740536A CN110740536A CN201911166726.1A CN201911166726A CN110740536A CN 110740536 A CN110740536 A CN 110740536A CN 201911166726 A CN201911166726 A CN 201911166726A CN 110740536 A CN110740536 A CN 110740536A
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Abstract
The invention discloses an multifunctional indicator lamp control circuit, which relates to the field of control circuits and comprises a main control board PCB and an indicator lamp PCB, wherein the main control board PCB mainly comprises a microprocessor U2 and a direct-current auxiliary power circuit, the indicator lamp PCB mainly comprises a driving light-emitting circuit and connectors J6 and J7, the power end of the driving light-emitting circuit is respectively connected with the power supply port of the direct-current auxiliary power circuit and the ground through pins 1 and 2 of a power interface J6, the driving end of the indicator lamp of the driving light-emitting circuit is respectively connected with two IO ends RA0 and RA1 of the microprocessor of the main control board through pins 1 and 2 of an indicator lamp control interface J7, the driving light-emitting circuit used by the invention has fewer components, the problems that the size of the indicator lamp is larger due to the fact that the number of components on the indicator lamp driving light-emitting circuit is larger in the prior art, the indicator lamp is inconvenient to carry and use when going out are solved, and the control circuits of various working state indicator.
Description
Technical Field
The invention relates to the field of control circuits, in particular to an multifunctional indicator lamp control circuit.
Background
As portable ac chargers are generally very compact for convenient carrying, and cannot display various working states of charging piles by touching a liquid crystal screen like wall hanging or floor standing piles , so that the working states of the chargers can only be indicated by a plurality of indicator lights through different states of indication.
In the prior art, a driving circuit of a conventional indicator lamp is used for driving light-emitting circuits of a plurality of indicator lamps to work, so that different indicator lamps can emit light when a charger is in different states. But the components and parts quantity on the pilot lamp drive circuit is more and occupy control port also more to cause the size of pilot lamp board great. Because the pilot lamp plate sets up between the shell upper cover plate of machine that charges usually and the frame, consequently, the size of pilot lamp plate is too big will lead to the shell big and clumsy, is not convenient for go out to carry the use.
Aiming at the problems in the prior art, control circuits which have simple circuit structures, few devices and few occupied control ports and meet the requirements of various working state indicator lamps of the charger are needed to be researched and developed, so that the portable charger is light and thin.
Disclosure of Invention
The invention aims to provide multifunctional indicator lamp control circuits, solve the problems that the size of an indicator lamp is large due to the fact that the number of components on an indicator lamp driving circuit is large and control ports are occupied, solve the problems that the size of the indicator lamp is large, the shell is large and clumsy and inconvenient to carry and use when the indicator lamp is too large, and achieve the purposes that the circuit structure is simple, the number of components is small, the number of occupied control ports is small, the control circuits of the indicator lamps in various working states of a charger are met, and therefore the portable charger is light and thin.
The technical scheme adopted by the invention is as follows:
multifunctional indicator lamp control circuit comprises a main control board PCB and an indicator lamp PCB, wherein the main control board PCB mainly comprises a microprocessor U2 and a DC auxiliary power supply circuit, and the indicator lamp PCB mainly comprises a driving light-emitting circuit and connectors J6 and J7;
the connector J6 is a power supply positive and negative electrode interface, and the connector J7 is an indicator light driving signal input interface;
the power end of the driving light-emitting circuit is respectively connected with the power supply port of the direct-current auxiliary power circuit and GND through pins 1 and 2 of a power interface J6, and the driving end of the indicator light of the driving light-emitting circuit is respectively connected with two IO ends RA0 and RA1 of the microprocessor of the main control board through pins 1 and 2 of an indicator light control interface J7.
, because the control of the multi-function indicator light, the drive circuit are all set on the main control board PCB, the drive luminescence circuit of the multi-function indicator light is set on the indicator light PCB, therefore, the number of components on the indicator light PCB is reduced, and the size of the indicator light PCB can be reduced, in addition, , because the number of the interfaces of the connectors J7, J6 which are set on the indicator light PCB and used for connecting the control of the microprocessor on the main control board PCB, the drive circuit and the DC auxiliary power circuit is still 2, therefore, the number of the interfaces of the connectors is not increased, and the size of the indicator light PCB can be reduced.
Compared with the prior art, the control circuit of the multifunctional indicator lamp provided by the invention can simultaneously control the indicating states of 3 indicator lamps by using two IO ports under the condition that the number of the interfaces for driving the IO ports of the light-emitting circuit and the connector is not increased, and the number of components on the indicator lamp panel and the number of the IO ports of the main control panel are reduced, so that the size of the indicator lamp panel and the requirement of IO port resources of the main control panel are reduced, and the development of a portable alternating current charger towards miniaturization and lightness and thinness is promoted.
The multifunctional indicator light mentioned in the invention refers to an indicator light with three different colors. In the control circuit of the multifunctional indicator light, the processor is further connected with the plurality of sensors in the charging pile control circuit, when the processor receives signals uploaded by the sensors, the processor judges and converts the signals of the sensors into corresponding IO signals, the IO signals are sent to the driving circuit of the multifunctional indicator light through the IO port of the processor, and under the action of the IO signals, the driving circuit inputs indicator light driving signals to the light emitting circuit of the indicator light, so that the indicator light driving signals drive the corresponding light emitting circuit to emit light.
The microprocessor sends the IO signal to the driving light-emitting circuit through the driving IO interfaces RA0 and RA1, and after the IO end J7 of the driving light-emitting circuit receives the IO signal, the indicating lamp driving end of the driving light-emitting circuit inputs an indicating lamp driving signal to the indicating lamp driving end of the driving light-emitting circuit under the action of the IO signal, so that the indicating lamp driving signal drives the driving light-emitting circuit to emit light. Specifically, the indicator driving signal drives a corresponding indicator in the driving light-emitting circuit to emit light.
, the driving light-emitting circuit mainly includes a light-emitting diode LED1 and a light-emitting diode LED2, the anode of the light-emitting diode LED1 is connected with the power supply interface 1 pin of the DC auxiliary power supply circuit through the No. 1 pin of the connector J6, and the cathode of the light-emitting diode LED1 is connected with the current-limiting resistor R53 in series and then connected with the cathode of the 2 pin of the power supply port of the J6;
the LED2, a triode Q9, a resistor R54 and a resistor R55 form an emitter driving circuit, the resistor R54 is a base pull-up bias resistor of Q9, wherein a pin at the end of R54 is connected with a base of Q9, the end of is connected with a collector of Q9 and then connected with a pin 1 of a port J6 of a direct-current auxiliary power supply circuit, the resistor R55 is a current-limiting resistor of the LED2, wherein the anode of the LED2 is connected with an emitter of the Q9, and the cathode of the LED2 is connected with a 2-pin cathode of the power supply port of the J6 after being connected with the R55 in series for current limiting.
, the driving light circuit further includes a light emitting diode LED3 and a light emitting diode LED4, the base of the transistor Q9 is further connected to the anodes of diodes D16 and D17, respectively, the cathode of the diode D17 is connected to the anode of the light emitting diode LED4 through a resistor R57, and the cathode of the light emitting diode LED4 is connected to the cathode of the diode D16;
the cathode of the diode D16 is also connected to the anode of the LED3 through the resistor R56, and the cathode of the LED3 is connected to the cathode of the diode D17; the cathodes of the diodes D17, D16 are also connected to pins No. 1, 2 of the connector J7, respectively.
The diodes D16 and D17 are triodes Q9 and pull-down diodes, anodes of the diodes D16 and D17 are both connected with a base electrode of the triode Q9, a cathode of the diode D16 is connected with a cathode of the LED4 and a pin of the resistor R56 and then connected with a pin 2 of the J7 indicator light driving signal input interface, and a cathode of the diode D17 is connected with a pin of the resistor R57 and then connected with a pin 1 of the J7 indicator light driving signal input interface.
Since the LED1 is not controlled by the microprocessor control signal, the LED1 will be turned on to emit light whenever the dc auxiliary power is supplied, and thus the LED1 is used as a power indicator.
The light emitting diodes LED2, LED3 and LED4 are all controlled by control signals output by the microprocessor IO ports RA0 and RA1, so that the conduction and cut-off of the diodes LED2, LED3 and LED4 can be controlled by changing the high-low level time sequence and frequency of the control signals output by the microprocessor IO ports RA0 and RA1, 3 indicator lamps can be turned on to emit light at the same time, 3 indicator lamps can be used for water lamp indication, 3 indicator lamps can be turned on alternately to emit light indication, and the function of controlling the states of the 3 indicator lamps by using two IO ports is realized.
, pins RA0 and RA1 of the microprocessor U2 are respectively connected to pins 1 and 2 of a connector J2 through resistors R7 and R8, pins 1 and 2 of the connector J2 are respectively connected to pins 1 and 2 of the connector J7, a pin VDD of the microprocessor U2 is grounded through capacitors C6 and C7 which are connected in parallel, and a pin RA3 of the microprocessor U2 is connected to the pin VDD through a resistor R5;
pins RA5 and RA4 of the microprocessor U2 are connected to the ground through capacitors C8 and C9, respectively, and a pin RA5 of the microprocessor U2 is connected to a pin RA4 through a resistor R6 and a crystal oscillator JT1 which are connected in parallel.
specific circuit connection modes of the microprocessor are shown, so that the received signals are processed, and the processed IO signals are output to the driving light-emitting circuit to drive the indicator lamp to indicate the state according to the actual condition.
, the DC auxiliary power supply circuit mainly includes a voltage stabilizer U1 with OUT and GND pins connected to pins 1 and 2 of connector J1, the GND pin of the voltage stabilizer U1 connected to ground, the OUT and GND pins of the voltage stabilizer U1 connected to the positive and negative poles of a polarity capacitor C5, and the IN port of the voltage stabilizer U1 connected to the 12V power supply and the GND pin via a capacitor C4;
an IN port of the voltage stabilizer U1 is connected to anodes of an inductor L1 and a polar capacitor C3 respectively through resistors R3 and R4 which are connected IN parallel, the other end of the inductor L1 is connected to the anode of a polar capacitor C2, cathodes of the polar capacitors C2 and C3 are connected to a GND pin of the voltage stabilizer U1, the anode of the polar capacitor C2 is connected to ends of resistors R1 and R2 which are connected IN parallel through a capacitor C1, the other ends of the parallel resistors R1 and R2 are connected with the same name end of a transformer EE16 winding, the other ends of the parallel resistors R1 and R2 are connected to the anode of a diode D1, and the cathode of the diode D1 is connected to the anode of the polar capacitor C2.
Here we show specific dc auxiliary power circuit, which obtains stable 5V dc voltage at OUT port of regulator U1 after processing 12V power by regulator U1, to power the light emitting circuit and the microprocessor circuit.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the multifunctional indicator lamp control circuit, the number of driving light-emitting circuit components of the used indicator lamp is small, and the problem that the size of the indicator lamp plate is large due to the fact that the number of components on the indicator lamp driving light-emitting circuit is large and the occupied control port is large in the prior art is solved;
2. the multifunctional indicator lamp control circuit also solves the problems that the size of the indicator lamp is too large, so that the outer shell is large and clumsy, and the indicator lamp is inconvenient to carry and use;
3. the multifunctional indicator lamp control circuit has the advantages of simple circuit structure, few devices, few occupied control ports and capability of meeting the requirements of the control circuit of the indicator lamps of various working states of the charger, thereby realizing the lightness and thinness of the portable charger.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a schematic diagram of the connection of the driving light-emitting circuit of the present invention;
FIG. 3 is a schematic diagram of the DC auxiliary power circuit connection of the present invention;
FIG. 4 is a schematic diagram of the microprocessor circuit connections of the present invention;
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
It should be noted that relational terms such as "" and "second," and the like, may be used solely to distinguish entities or operations from another entities or operations without necessarily requiring or implying any actual such relationship or order between such entities or operations, further that the terms "comprise," "include," or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a -series of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in detail with reference to fig. 1 to 4.
Example 1
kinds of multi-functional pilot lamp control circuit, as shown in fig. 1, including main control board PCB and pilot lamp PCB, the said main control board PCB mainly includes microprocessor U2 and direct-flow auxiliary power circuit, the said pilot lamp PCB mainly includes driving the luminescent circuit and connector J6, J7;
the connector J6 is a power supply positive and negative electrode interface, and the connector J7 is an indicator light driving signal input interface;
the power supply end of the driving light-emitting circuit is respectively connected with the power supply port of the direct-current auxiliary power circuit and GND through pins 1 and 2 of a power interface J6, and the driving end of the indicator light of the driving light-emitting circuit is respectively connected with two IO ends RA0 and RA1 of the 16-bit microprocessor of the main control board through pins 1 and 2 of an indicator light control interface J7.
, because the control of the multi-function indicator light, the drive circuit are all set on the main control board PCB, the drive luminescence circuit of the multi-function indicator light is set on the indicator light PCB, therefore, the number of components on the indicator light PCB is reduced, and the size of the indicator light PCB can be reduced, in addition, , because the number of the interfaces of the connectors J7, J6 which are set on the indicator light PCB and used for connecting the control of the microprocessor on the main control board PCB, the drive circuit and the DC auxiliary power circuit is still 2, therefore, the number of the interfaces of the connectors is not increased, and the size of the indicator light PCB can be reduced.
Compared with the prior art, the control circuit of the multifunctional indicator lamp provided by the invention can simultaneously control the indicating states of 3 indicator lamps by using two IO ports under the condition that the number of the interfaces for driving the IO ports of the light-emitting circuit and the connector is not increased, and the number of components on the indicator lamp panel and the number of the IO ports of the main control panel are reduced, so that the size of the indicator lamp panel and the requirement of IO port resources of the main control panel are reduced, and the development of a portable alternating current charger towards miniaturization and lightness and thinness is promoted.
The multifunctional indicator light mentioned in the invention refers to an indicator light with three different colors. In the control circuit of the multifunctional indicator light, the processor is further connected with the plurality of sensors in the charging pile control circuit, when the processor receives signals uploaded by the sensors, the processor judges and converts the signals of the sensors into corresponding IO signals, the IO signals are sent to the driving circuit of the multifunctional indicator light through the IO port of the processor, and under the action of the IO signals, the driving circuit inputs indicator light driving signals to the light emitting circuit of the indicator light, so that the indicator light driving signals drive the corresponding light emitting circuit to emit light.
The microprocessor sends the IO signal to the driving light-emitting circuit through the driving IO interfaces RA0 and RA1, and after the IO end J7 of the driving light-emitting circuit receives the IO signal, the indicating lamp driving end of the driving light-emitting circuit inputs an indicating lamp driving signal to the indicating lamp driving end of the driving light-emitting circuit under the action of the IO signal, so that the indicating lamp driving signal drives the driving light-emitting circuit to emit light. Specifically, the indicator driving signal drives a corresponding indicator in the driving light-emitting circuit to emit light.
Example 2
The present embodiment is a further description of embodiment 1, and as shown in fig. 2, the driving light-emitting circuit mainly includes a light-emitting diode LED1 with a model of 67-21-UC and a light-emitting diode LED2 with a model of 67-21-UR, an anode of the light-emitting diode LED1 is connected to a power supply interface 1 pin of the dc auxiliary power supply circuit through a pin 1 of a connector J6, and a cathode of the light-emitting diode LED1 is connected in series with a 1K Ω current-limiting resistor R53 and then connected to a 2-pin cathode of a power supply port of the J6;
the LED2 and a triode Q9, a 10K omega resistor R54 and a 390K omega resistor R55 of MMBT3904 form an emitter driving circuit, the resistor R54 is a base pull-up bias resistor of a triode Q9, a pin at the end R54 is connected with a base of Q9, the end is connected with a collector of Q9 and then connected with a pin 1 of a port J6 of a direct-current auxiliary power supply circuit, the resistor R55 is a current-limiting resistor of the LED2, the anode of the LED2 is connected with the emitter of the Q9, and the cathode of the LED2 is connected with the cathode of a pin 2 of the power port J6 after being connected with the R55 in series for current limiting.
Example 3
This embodiment is a further description of embodiment 2, and as shown IN fig. 2, the driving light-emitting circuit further includes a light-emitting diode LED3 with a model number of 67-21-UR and a light-emitting diode LED4 with a model number of 67-21-UG, the base of the triode Q9 is further connected to the anodes of diodes D16 and D17 with a model number of IN4148, respectively, the cathode of the diode D17 is connected to the anode of the light-emitting diode LED4 through a 1K Ω resistor R57, and the cathode of the light-emitting diode LED4 is connected to the cathode of the diode D16;
the cathode of the diode D16 is also connected to the anode of the LED3 through a resistor R56 of 510 Ω, and the cathode of the LED3 is connected to the cathode of the diode D17; the cathodes of the diodes D17, D16 are also connected to pins No. 1, 2 of the connector J7, respectively.
The diodes D16 and D17 are triodes Q9 and pull-down diodes, anodes of the diodes D16 and D17 are both connected with a base electrode of the triode Q9, a cathode of the diode D16 is connected with a cathode of the LED4 and a pin of the resistor R56 and then connected with a pin 2 of the J7 indicator light driving signal input interface, and a cathode of the diode D17 is connected with a pin of the resistor R57 and then connected with a pin 1 of the J7 indicator light driving signal input interface.
Since the LED1 is not controlled by the microprocessor control signal, the LED1 will be turned on to emit light whenever the dc auxiliary power is supplied, and thus the LED1 is used as a power indicator.
The light emitting diodes LED2, LED3 and LED4 are all controlled by control signals output by the microprocessor IO ports RA0 and RA1, so that the conduction and cut-off of the diodes LED2, LED3 and LED4 can be controlled by changing the high-low level time sequence and frequency of the control signals output by the microprocessor IO ports RA0 and RA1, 3 indicator lamps can be turned on to emit light at the same time, 3 indicator lamps can be used for water lamp indication, 3 indicator lamps can be turned on alternately to emit light indication, and the function of controlling the states of the 3 indicator lamps by using two IO ports is realized.
Example 4
This embodiment is a further description of any of embodiments 1-3, and as shown in fig. 4, the pins RA0 and RA1 of the PIC16F1829 type microprocessor U2 are respectively connected to pins 1 and 2 of the connector J2 through resistors R7 and R8 of 22 Ω, pins 1 and 2 of the connector J2 are respectively connected to pins 1 and 2 of the connector J7, and the pin VDD of the microprocessor U2 is connected in parallel through a pin VDD of 10 Ω5The pF capacitors C6 and C7 are grounded, and an RA3 pin of the microprocessor U2 is connected to a VDD pin through a 10K omega resistor R5;
pins RA5 and RA4 of the microprocessor U2 are connected to the ground through capacitors C8 and C9 of 22pF respectively, and a pin RA5 of the microprocessor U2 is connected to a pin RA4 through parallel-connected resistors R6 and a crystal oscillator JT1 of 8M.
specific circuit connection modes of the microprocessor are shown, so that the received signals are processed, and the processed IO signals are output to the driving light-emitting circuit to drive the indicator lamp to indicate the state according to the actual condition.
Example 5
This embodiment is a description of a step of any of embodiments 1-3, and as shown IN fig. 3, the dc auxiliary power supply circuit mainly includes a 7805 type voltage regulator U1 having OUT and GND pins connected to pins 1 and 2 of a connector J1, the GND pin of the voltage regulator U1 being grounded, the OUT and GND pins of a voltage regulator U1 being further connected to the positive and negative electrodes of a 220uF polarity capacitor C5, respectively, the IN port of the voltage regulator U1 being connected to a 12V power supply and to the GND pin through a 4.7uF capacitor C4, respectively;
the IN port of the voltage stabilizer U1 is connected to the anodes of polar capacitors C3 of 10uH inductors L1 and 220uF respectively through 100 Ω resistors R3 and R4 which are connected IN parallel, the other end of the inductor L1 is connected to the anode of a polar capacitor C2 of 220uF, the cathodes of the polar capacitors C2 and C3 are connected to the GND pin of the voltage stabilizer U1, the anode of the polar capacitor C2 is also connected to ends of resistors R1 and R2 which are connected IN parallel and 43 Ω through a capacitor C1 of 1nF, the other ends of the parallel resistors R1 and R2 are connected with the same-name end of a winding of a transformer EE16, the other 2 ends of the parallel resistors R1 and R2 are also connected to the anode of a diode D2 of SS210 type, and the cathode of the diode D2 is connected to the anode of the polar capacitor C2.
Here we show specific dc auxiliary power circuit, which obtains stable 5V dc voltage at OUT port of regulator U1 after processing 12V power by regulator U1, to power the light emitting circuit and the microprocessor circuit.
Example 6
In order to better understand the implementation manner of the multifunctional indicator lamp control circuit provided by the present invention, the following takes the multifunctional indicator lamp control circuit shown in fig. 2 as an example, and exemplarily illustrates a principle that the driving circuit drives the light emitting circuit to emit light when the IO signal (i.e., the IO signal input to the IO terminal J7 of the driving circuit) output by the IO interfaces RA0 and RA1 of the microprocessor is at a high level and the IO signal is at a low level.
Table 1: indicator light definition and action corresponding table
(1) The control signals of the RA0 and RA1 IO ports are all low level
As shown in fig. 2: when the microprocessor control signal output IO ports RA0 and RA1 are both at a low level, the triode Q9 is an NPN transistor, and at this time, the control signals are both at a low level, and the cathodes of the diodes D16 and D17 are both at a low level (grounded), so that the base voltage of the Q9 is between 0.3V and 0.7V, and the on condition of the triode Q9 is not reached (Uc > Ub > Ue), so that the triode Q9 is turned off, the light-emitting diode LED2 is turned off and does not emit light, and the anodes and the cathodes of the light-emitting diodes LED3 and LED4 are both at a low level, so that the light-emitting diodes LED3 and LED4 are both in a turned-off state and do not emit light.
(2) The control signals of the RA0 and RA1 IO ports are all high level
As shown in fig. 2: when the microprocessor control signal output IO ports RA0 and RA1 are both at a high level, the triode Q9 is an NPN transistor, and at this time, the control signal is at a high level, and the cathodes of the diodes D16 and D17 are both at a high level (5V), so that the diodes D16 and D17 are turned off, the base voltage of the triode Q9 is close to the power supply voltage, and the triode Q9 is turned on and the light emitting diode LED2 is turned on to emit light when the on condition of the triode Q9 (Uc > Ub > Ue) is met, and the anodes and the cathodes of the light emitting diodes LED3 and LED4 are both at a high level, so that the light emitting diodes LED3 and LED4 are both in an off state and do not emit light.
(3) The control signal of the RA0 IO port is high level, and the control signal of the RA1 IO port is low level
As shown in fig. 2: when the port control signal of the microprocessor control signal output IO port RA0 is at a high level, the transistor Q9 is an NPN transistor, and at this time, the control signal RA0 is at a high level, and the cathode of the diode D17 is also at a high level (5V), so the diode D17 is turned off, the base voltage of the transistor Q9 approaches the power supply voltage, and the transistor Q9 is turned on when the on condition of the transistor Q9 (Uc > Ub > Ue) is reached, so the light emitting diode LED2 is turned on to emit light, and the anodes of the light emitting diodes 3 and 4 are connected to the pins 1 and 2 of the port J7 through the current limiting resistors R57, R56 and the cathode, at this time, the control signal terminal RA0 is connected to the pin 1 of the J7, and the RA1 is connected to the pin 2 of the J7, so the light emitting diode LED3 is in a turned off state, and the light emitting diode LED4 is in a.
(4) The control signal of the RA0 IO port is at low level, and the control signal of the RA1 IO port is at high level
As shown in fig. 2: when the port control signal of the microprocessor control signal output IO port RA1 is at a high level, the transistor Q9 is an NPN transistor, and at this time, the control signal RA0 is at a high level, and the cathode of the diode D16 is also at a high level (5V), so the diode D16 is turned off, the base voltage of the transistor Q9 approaches the power supply voltage, and the transistor Q9 is turned on when the on condition of the transistor Q9 (Uc > Ub > Ue) is reached, so the light emitting diode LED2 is turned on to emit light, and the anodes of the light emitting diodes 3 and 4 are connected to the pins 1 and 2 of the port J7 through the current limiting resistors R57, R56 and the cathode, at this time, the control signal terminal RA0 is connected to the pin 1 of the J7, and the RA1 is connected to the pin 2 of the J7, so the light emitting diode LED4 is in a turned off state, and the light emitting diode LED3 is in a.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be made by those skilled in the art without inventive work within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (5)
- The multifunctional indicator lamp control circuit comprises a main control board PCB and an indicator lamp PCB, and is characterized in that the main control board PCB mainly comprises a microprocessor U2 and a direct-current auxiliary power circuit, and the indicator lamp PCB mainly comprises a driving light-emitting circuit and connectors J6 and J7;the connector J6 is a power supply positive and negative electrode interface, and the connector J7 is an indicator light driving signal input interface;the power end of the driving light-emitting circuit is respectively connected with the power supply port of the direct-current auxiliary power circuit and GND through pins 1 and 2 of a power interface J6, and the driving end of the indicator light of the driving light-emitting circuit is respectively connected with two IO ends RA0 and RA1 of the microprocessor of the main control board through pins 1 and 2 of an indicator light control interface J7.
- 2. The kinds of multi-functional indicator light control circuits of claim 1, wherein the driving light emitting circuit mainly includes a light emitting diode LED1 and a light emitting diode LED2, the positive pole of the light emitting diode LED1 is connected with the power supply interface 1 pin of the DC auxiliary power supply circuit through the No. 1 pin of the connector J6, the negative pole of the light emitting diode LED1 is connected with the 2-pin negative pole of the power supply port of J6 after being connected in series with the current limiting resistor R53;the LED2, a triode Q9, a resistor R54 and a resistor R55 form an emitter driving circuit, the resistor R54 is a base pull-up bias resistor of Q9, wherein a pin at the end of R54 is connected with a base of Q9, the end of is connected with a collector of Q9 and then connected with a pin 1 of a port J6 of a direct-current auxiliary power supply circuit, the resistor R55 is a current-limiting resistor of the LED2, wherein the anode of the LED2 is connected with an emitter of the Q9, and the cathode of the LED2 is connected with a 2-pin cathode of the power supply port of the J6 after being connected with the R55 in series for current limiting.
- 3. The kinds of multi-functional indicator light control circuits of claim 2, wherein the driving light emitting circuit further comprises a light emitting diode LED3 and a light emitting diode LED4, the base of the transistor Q9 is further connected to the anodes of diodes D16 and D17, respectively, the cathode of the diode D17 is connected to the anode of the light emitting diode LED4 through a resistor R57, and the cathode of the light emitting diode LED4 is connected to the cathode of the diode D16;the cathode of the diode D16 is also connected to the anode of the LED3 through the resistor R56, and the cathode of the LED3 is connected to the cathode of the diode D17; the cathodes of the diodes D17, D16 are also connected to pins No. 1, 2 of the connector J7, respectively.
- 4. A kinds of multifunctional indicating lamp control circuit according to any of claims 1-3, wherein pins RA0 and RA1 of the microprocessor U2 are respectively connected to pins 1 and 2 of a connector J2 through resistors R7 and R8, pins 1 and 2 of the connector J2 are respectively connected to pins 1 and 2 of the connector J7, a VDD pin of the microprocessor U2 is grounded through parallel capacitors C6 and C7, and a pin RA3 of the microprocessor U2 is connected to the VDD pin through a resistor R5;pins RA5 and RA4 of the microprocessor U2 are connected to the ground through capacitors C8 and C9, respectively, and a pin RA5 of the microprocessor U2 is connected to a pin RA4 through a resistor R6 and a crystal oscillator JT1 which are connected in parallel.
- 5. The multifunctional indicator lamp control circuit as claimed IN any of claims 1-3, wherein the DC auxiliary power supply circuit mainly comprises a voltage regulator U1 with OUT and GND pins connected to pins 1 and 2 of a connector J1, the GND pin of the voltage regulator U1 is grounded, the OUT and GND pins of a voltage regulator U1 are connected to the positive and negative electrodes of a polarity capacitor C5, respectively, and the IN port of the voltage regulator U1 is connected to a 12V power supply and the GND pin through a capacitor C4;an IN port of the voltage stabilizer U1 is connected to anodes of an inductor L1 and a polar capacitor C3 respectively through resistors R3 and R4 which are connected IN parallel, the other end of the inductor L1 is connected to the anode of a polar capacitor C2, cathodes of the polar capacitors C2 and C3 are connected to a GND pin of the voltage stabilizer U1, the anode of the polar capacitor C2 is connected to ends of resistors R1 and R2 which are connected IN parallel through a capacitor C1, the other ends of the parallel resistors R1 and R2 are connected with the same name end of a transformer EE16 winding, the other ends of the parallel resistors R1 and R2 are connected to the anode of a diode D1, and the cathode of the diode D1 is connected to the anode of the polar capacitor C2.
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| CN201911166726.1A CN110740536A (en) | 2019-11-25 | 2019-11-25 | multifunctional indicator lamp control circuit |
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| CN201911166726.1A CN110740536A (en) | 2019-11-25 | 2019-11-25 | multifunctional indicator lamp control circuit |
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| US20040057235A1 (en) * | 2002-09-23 | 2004-03-25 | Jian-Huei Li | Gradually lighting/dimming wireless transmission indicator lamp |
| CN104655231A (en) * | 2015-02-14 | 2015-05-27 | 合肥誉联信息科技有限公司 | Automatic water level alarm circuit of solar water heater |
| CN105072762A (en) * | 2015-08-13 | 2015-11-18 | 青岛海信电器股份有限公司 | Dual-color indication lamp control circuit and electronic equipment |
| CN206713134U (en) * | 2017-03-29 | 2017-12-05 | Tcl-罗格朗国际电工（惠州）有限公司 | Touch dimmer and light adjusting circuit |
| CN211297042U (en) * | 2019-11-25 | 2020-08-18 | 四川力士达照明设备股份有限公司 | Multifunctional indicator lamp control circuit |
-
2019
- 2019-11-25 CN CN201911166726.1A patent/CN110740536A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040057235A1 (en) * | 2002-09-23 | 2004-03-25 | Jian-Huei Li | Gradually lighting/dimming wireless transmission indicator lamp |
| CN104655231A (en) * | 2015-02-14 | 2015-05-27 | 合肥誉联信息科技有限公司 | Automatic water level alarm circuit of solar water heater |
| CN105072762A (en) * | 2015-08-13 | 2015-11-18 | 青岛海信电器股份有限公司 | Dual-color indication lamp control circuit and electronic equipment |
| CN206713134U (en) * | 2017-03-29 | 2017-12-05 | Tcl-罗格朗国际电工（惠州）有限公司 | Touch dimmer and light adjusting circuit |
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