Intelligent control system for light sources

Abstract

The application relates to an intelligent control system of a light source, which comprises a main controller, a control circuit, a sensing module, a first power supply circuit, a second power supply circuit and a networking module; the sensing module comprises a three-axis sensor, an ambient light acquisition circuit, a current acquisition circuit and a voltage acquisition circuit, all of which are connected with the main controller, and the acquisition ends of the current acquisition circuit and the voltage acquisition circuit are connected to the first power supply circuit; the working state of an indicator board is judged by setting the sensing module to acquire the posture, ambient light, voltage and current of the indicator board during work, and the controller is used for judgment; when the working posture, ambient light, working voltage or working current of the indicator board is abnormal, the controller can automatically select circuit breaking protection by the control circuit or remotely send information to inform relevant staff to overhaul according to the severity, so that relevant personnel can timely find and solve faults.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic signboard, in particular to a light source intelligent control system. BACKGROUND

[0002] The conventional display device in public area, such as display device, LED display, etc. has simple function, and the display is on when power on and off when power off. When the display device fails, it cannot actively report the fault information, and only through artificial inspection can the fault be found. Artificial inspection to find the display device failure is not reliable and cannot be found and rectified in the first time, resulting in that the display device failure cannot be recovered for a long time and causes certain degree of trouble to passengers, greatly affecting the experience of passengers. Especially in high-speed rail station and other buildings, the indoor navigation precision is not enough, and passengers cannot obtain correct route through mobile phone navigation, at this time, passengers need correct guidance of the display device, and the display device failure will greatly reduce the favorability of passengers to the city, which is not conducive to the construction of civilized city. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a light source intelligent control system, which can detect faults by itself, and when the signboard fails, it can remotely send messages to prompt relevant personnel to repair in time.

[0004] The light source intelligent control system of the present application comprises a main controller, a control circuit, a sensing module, a first power supply circuit, a second power supply circuit and a networking module.

[0005] The first power supply circuit is used for power supply of the signboard, and the second power supply circuit is used for power supply of the main controller, the sensing module and the networking module.

[0006] The control circuit comprises a switching element, the signal input end of the control circuit is connected with the main controller, and the switching element is arranged in the first power supply circuit and used for controlling the on-off of the first power supply circuit.

[0007] The sensing module comprises a three-axis sensor, an ambient light acquisition circuit, a current acquisition circuit and a voltage acquisition circuit, all of which are connected with the main controller, and the acquisition ends of the current acquisition circuit and the voltage acquisition circuit are connected to the first power supply circuit.

[0008] Further, the second power supply circuit comprises a battery, a first level converter and a second level converter, the output end of the battery is connected with the input ends of the first level converter and the second level converter, the output end of the first level converter outputs 2.5V DC level, and the output end of the second level converter outputs 3V DC level; the input end and the output end of the first level converter and the second level converter are both provided with a plurality of filter capacitors.

[0009] Further, the main controller comprises an STM32 single-chip microcomputer and a peripheral circuit arranged on a pin of the STM32 single-chip microcomputer, and a power supply pin of the STM32 single-chip microcomputer is connected with the output end of the first and second level converters.

[0010] Further, the ambient light acquisition circuit comprises a photosensitive resistor, a first voltage dividing resistor and a first operational amplifier; the photosensitive resistor and the first voltage dividing resistor are connected in series, one end of which is connected with the output end of the first level converter and the other end is grounded; the positive input end of the operational amplifier is connected between the photosensitive resistor and the first voltage dividing resistor, and the output end of the operational amplifier is provided with an RC filter circuit and is connected with an IO pin of the STM32 single-chip microcomputer.

[0011] Further, the current acquisition circuit comprises a second operational amplifier and a first triode, the positive input end and the reverse input end of the second operational amplifier are connected with the two ends of the indicator through a resistor in series, the output end of the second operational amplifier is connected with the base of the first triode, the emitter of the first triode is connected with the ground through a plurality of resistors in series, the collector of the first triode is connected with the positive input end of the second operational amplifier, and the emitter of the first triode is connected with the IO pin of the STM32 single-chip microcomputer through an RC filter.

[0012] Further, the voltage acquisition circuit comprises a second voltage dividing resistor and a third voltage dividing resistor, the second voltage dividing resistor and the third voltage dividing resistor are connected in series, one end of which is connected with the power supply line of the first power supply circuit and the other end is grounded, and the IO pin of the STM32 single-chip microcomputer with an analog-to-digital conversion is connected between the second voltage dividing resistor and the third voltage dividing resistor.

[0013] Further, the control circuit comprises a MOS tube and a second triode, the source and the drain of the MOS tube are connected in series on the power supply line of the first power supply circuit, the gate of the MOS tube is connected with the collector of the second triode through a resistor in series, the base of the second triode is connected with the IO pin of the STM32 single-chip microcomputer through a resistor in series, and the emitter of the second triode is grounded.

[0014] Further, the state indicating lamp circuit comprises a plurality of LED lamp beads, the anode of the LED lamp bead is connected with the output end of the second level converter, and the cathode of the LED lamp bead is connected with the IO pin of the STM32 single-chip microcomputer through a resistor in series.

[0015] Further, the networking module adopts an ESO01 WIFI module, and the WIFI module is connected with the STM32 single-chip microcomputer through a UART serial port.

[0016] Further, the display device is a lighting device, an LED lamp box, an indicator or an LED display screen.

[0017] The light source intelligent control system of the present application can judge the working state of the indicator board by setting the sensing module to collect the posture of the indicator board, the ambient light, the voltage and the current when the indicator board is working, and using the controller to judge, when the controller judges that the working posture of the indicator board, the ambient light, the working voltage or the working current is abnormal, according to the severity, the controller can select to use the control circuit to break the circuit for protection, or use the communication module to send information remotely to inform the relevant staff to repair, so as to facilitate the relevant personnel to find and solve the fault in time. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings:

[0019] Figure 1 is a structural block diagram of the present application;

[0020] Figure 2 is a circuit diagram of the first power supply circuit, the control circuit and the voltage acquisition circuit of the present application;

[0021] Figure 3 is a circuit diagram of the second power supply circuit of the present application;

[0022] Figure 4 is a circuit diagram of the controller of the present application;

[0023] Figure 5 is a circuit diagram of the ambient light acquisition circuit of the present application;

[0024] Figure 6 is a circuit diagram of the current acquisition circuit of the present application;

[0025] Figure 7 is a circuit diagram of the three-axis sensor interface of the present application;

[0026] Figure 8 is a circuit diagram of the networking module of the present application;

[0027] Figure 9 is a circuit diagram of the indicator light of the present application;

[0028] Figure 10 is a circuit diagram of the burning interface of the present application. DETAILED DESCRIPTION

[0029] As Figures 1-10The light source intelligent control system of the embodiment comprises a main controller, a control circuit, a sensing module, a first power supply circuit, a second power supply circuit and a networking module.

[0030] The first power supply circuit is used for supplying power for the indicator, and the second power supply circuit is used for supplying power for the main controller, the sensing module and the networking module.

[0031] The control circuit comprises a switching element, the signal input end of the control circuit is connected with the main controller, and the switching element is arranged in the first power supply circuit and is used for controlling the on-off of the first power supply circuit.

[0032] The sensing module comprises a three-axis sensor, an ambient light acquisition circuit, a current acquisition circuit and a voltage acquisition circuit, all of which are connected with the main controller, and the acquisition ends of the current acquisition circuit and the voltage acquisition circuit are connected to the first power supply circuit.

[0033] The light source intelligent control system of the embodiment can judge the working state of the indicator by setting the sensing module to acquire the posture, ambient light, voltage and current of the indicator during working, and can judge by using the controller, when the working posture, ambient light, working voltage or working current of the indicator is abnormal, according to the severity, the controller can select to use the control circuit to protect the circuit from being broken, or use the communication module to send information remotely to inform the relevant staff to repair, so that the relevant personnel can find and solve the fault in time.

[0034] The specific circuit structure and principle are as follows:

[0035] In the embodiment, the second power supply circuit comprises a battery, a first level converter and a second level converter, the model of the first level converter is LM4120A, the model of the second level converter is SGM6031, the positive pole of the battery connected in series is connected with the input end VIN of the first level converter and the second level converter, the output end VOUT of the first level converter outputs a direct current level of 2.5V, and the output end VOUT of the second level converter outputs a direct current level of 3V; the input end and the output end of the first level converter and the second level converter are each provided with a plurality of filter capacitors.

[0036] In the embodiment, the main controller comprises an STM32 single-chip microcomputer and a peripheral circuit arranged on the pin of the STM32 single-chip microcomputer, the peripheral circuit mainly comprises a reserved debugging programming interface (P1 and P2) and a clock circuit (the circuit where the crystal oscillator Y1 is located), the power supply pins VDD1, VDD2 and VDD3 of the STM32 single-chip microcomputer are connected with the output end of the second level converter (3V), and the power supply pin VDDA of the STM32 single-chip microcomputer is connected with the output end of the first level converter (2.5V).

[0037] In this embodiment, the ambient light acquisition circuit includes a photoresistor R15, a first voltage dividing resistor R13 and a first operational amplifier U3B; the first voltage dividing resistor R13 and the photoresistor R15 are connected in series, one end of which is connected to the output end (2.5V) of the first level converter, and the other end is grounded; the positive input end 5 of the operational amplifier U3B is connected between the photoresistor R15 and the first voltage dividing resistor R13, the output end of the operational amplifier is provided with an RC filter circuit (composed of R14 and C17) and is connected to the IO pin (ADC-R line) of the STM32 single-chip microcomputer, the resistance value of the photoresistor R15 is changed with the change of the ambient light, so as to be quantified as the intensity of the ambient light; in addition, the photoresistor can be replaced by other resistors that can acquire environmental parameters, such as sound-sensitive resistors, pressure-sensitive resistors and various sensing resistors, to acquire different environmental or indicator working state parameters.

[0038] In this embodiment, the current acquisition circuit includes a second operational amplifier U3A and a first triode Q3, the positive input end 3 and the reverse input end 2 of the second operational amplifier U3A are connected in series with resistors (R19 and R20), and then are connected to the two ends of the indicator (in this embodiment, the resistors R1 and R4 are used to replace the impedance of the indicator), the output end 1 of the second operational amplifier U3A is connected to the base of the first triode Q3, the emitter of the first triode Q3 is connected in series with resistors R22 and R23 and then is grounded, the collector of the first triode Q3 is connected to the positive input end 3 of the second operational amplifier U3A, and the emitter of the first triode Q3 is connected to an RC filter (composed of R21 and C24) and then is connected to the IO pin of the STM32 single-chip microcomputer.

[0039] In this embodiment, the voltage acquisition circuit includes a second voltage dividing resistor R2 and a third voltage dividing resistor R6, the second voltage dividing resistor R2 and the third voltage dividing resistor R6 are connected in series, one end of which is connected to the power supply line VCC of the first power supply circuit, and the other end is grounded, and the IO pin with analog-digital conversion of the STM32 single-chip microcomputer is connected between the second voltage dividing resistor R2 and the third voltage dividing resistor R6 (ADC_24V), and the voltage value of the power supply line of the first power supply circuit is acquired by the voltage dividing mode, so as to determine whether the indicator works under the standard working voltage of 24V.

[0040] In this embodiment, the control circuit includes a MOS tube Q1 and a second triode Q2, the source and the drain of the MOS tube Q1 are connected in series on the power supply line of the first power supply circuit, the gate of the MOS tube Q1 is connected in series with a resistor and then is connected to the collector of the second triode Q2, the base of the second triode Q2 is connected in series with a resistor and then is connected to the IO pin of the STM32 single-chip microcomputer, the emitter of the second triode Q2 is grounded, the control signal generated by the IO pin of the STM32 single-chip microcomputer is amplified by the triode Q2 first, and then is isolated by the MOS tube Q1 and passes through the power supply line of the first power supply circuit, so as to realize the on-off control of the first power supply circuit by the STM32 single-chip microcomputer.

[0041] In the embodiment, the state indicating lamp circuit includes a plurality of LED lamp beads, the anode of the LED lamp bead is connected with the output end of the second level converter, the cathode of the LED lamp bead is connected with the IO pin of the STM32 single-chip microcomputer through a resistance in series, and the LED lamp bead is used for indicating the state of the circuit and can also give a prompt when a fault occurs.

[0042] In the embodiment, the networking module adopts an ESO01 WIFI module, the WIFI module is connected with the STM32 single-chip microcomputer through a UART serial port, and networking and remote sending of messages are realized through WIFI.

[0043] In the embodiment, the display device includes but is not limited to an illumination device, an LED lamp box, a signboard or an LED display screen.

[0044] Finally, it should be explained that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A system for intelligent control of light sources, characterized in that: The main controller, the control circuit, the sensing module, the first power supply circuit, the second power supply circuit and the networking module are included. The first power supply circuit is used for supplying power for the display device, and the second power supply circuit is used for supplying power for the main controller, the sensing module and the networking module. The control circuit includes a switching element, and a signal input end of the control circuit is connected with the main controller. The sensing module includes a three-axis sensor, an ambient light acquisition circuit, a current acquisition circuit and a voltage acquisition circuit, all of which are connected with the main controller. The second power supply circuit includes a battery, a first level converter and a second level converter, an output end of the battery is connected with input ends of the first level converter and the second level converter, an output end of the first level converter outputs a direct current level of 2.5V, and an output end of the second level converter outputs a direct current level of 3V. Input ends and output ends of the first level converter and the second level converter are each provided with a plurality of filter capacitors. The main controller includes an STM32 single-chip microcomputer and a peripheral circuit arranged on a pin of the STM32 single-chip microcomputer, and a power supply pin of the STM32 single-chip microcomputer is connected with output ends of the first level converter and the second level converter. The ambient light acquisition circuit includes a photosensitive resistor, a first voltage dividing resistor and a first operational amplifier, the first voltage dividing resistor and the photosensitive resistor are connected in series, one end of the series connection is connected with the output end of the first level converter, and the other end is grounded, a positive input end of the operational amplifier is connected between the photosensitive resistor and the first voltage dividing resistor, and an output end of the operational amplifier is provided with an RC filter circuit and is connected with an IO pin of the STM32 single-chip microcomputer. The current acquisition circuit includes a second operational amplifier and a first triode, positive and negative input ends of the second operational amplifier are connected with two ends of the indicator through a resistor in series, an output end of the second operational amplifier is connected with a base of the first triode, an emitter of the first triode is connected with the ground through a plurality of resistors in series, a collector of the first triode is connected with the positive input end of the second operational amplifier, and the emitter of the first triode is connected with the RC filter and the IO pin of the STM32 single-chip microcomputer. The state indicating lamp circuit includes a plurality of LED lamp beads, an anode of the LED lamp bead is connected with the output end of the second level converter, and a cathode of the LED lamp bead is connected with the IO pin of the STM32 single-chip microcomputer through a resistor in series. The voltage acquisition circuit includes a second voltage dividing resistor and a third voltage dividing resistor, the second voltage dividing resistor and the third voltage dividing resistor are connected in series, one end of the series connection is connected with a power supply line of the first power supply circuit, and the other end is grounded, and an IO pin with an analog-to-digital conversion of the STM32 single-chip microcomputer is connected between the second voltage dividing resistor and the third voltage dividing resistor. The control circuit comprises a MOS tube and a second triode, the source and the drain of the MOS tube are connected in series on the power supply line of the first power supply circuit, the gate of the MOS tube is connected with the collector of the second triode after being connected with a resistor in series, the base of the second triode is connected with the IO pin of the STM32 single-chip microcomputer after being connected with a resistor in series, and the emitter of the second triode is grounded.

2. The intelligent control system of light source according to claim 1, characterized in that: The networking module adopts an ESO01 WIFI module, and the WIFI module is connected with the STM32 single-chip microcomputer through a UART serial port.

3. The intelligent control system for light sources of claim 1, wherein: The display device is a lighting device, an LED lamp box, a signboard or an LED display screen.

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