CN110602831B - Single-bus half-duplex two-way communication LED driving device and LED lighting lamp - Google Patents
Single-bus half-duplex two-way communication LED driving device and LED lighting lamp Download PDFInfo
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- CN110602831B CN110602831B CN201910942199.2A CN201910942199A CN110602831B CN 110602831 B CN110602831 B CN 110602831B CN 201910942199 A CN201910942199 A CN 201910942199A CN 110602831 B CN110602831 B CN 110602831B
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Abstract
A single-bus half-duplex two-way communication LED driving device and an LED lighting lamp are provided, which are arranged on a user interaction board: the key module generates a key signal according to user input; the first control module generates a first single bus communication signal according to the key signal and generates an electric quantity display signal according to a second single bus communication signal; the electric quantity display module displays the electric quantity according to the electric quantity display signal; on the illumination drive control board: the second control module generates a control signal according to the first single-bus communication signal and generates a second single-bus communication signal according to the voltage detection signal; the voltage detection module detects the power supply voltage to generate a voltage detection signal; the connecting wires between the user interaction board and the lighting driving control board are reduced, the assembly complexity of the single-bus half-duplex two-way communication LED driving device is reduced, the maintainability is high, the electromagnetic interference generated by the wires connected between the two boards is reduced, the communication efficiency and reliability of the two boards are improved, and the practicability is improved.
Description
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to a single-bus half-duplex two-way communication LED driving device and an LED illuminating lamp.
Background
Through years of historical development and replacement, modern lamps have been developed to become the achievement of wide application today, wherein, the portable LED lighting lamp becomes the first choice tool of mobile lighting with the advantages of convenience, flexibility, attractive appearance, simple and convenient operation, adoption, table placement, magnetic adsorption, hanging lighting and the like, and the lamp holder can be adjusted within 120 degrees to adjust the irradiation angle. At present, the electric quantity display and the on-off control of the traditional portable LED lighting lamp are arranged on one plate, and the driving control of the LED lamp is arranged on the other plate, so that the on-off control, the electric quantity display and the driving control are connected through a lead, more and longer leads are needed, the assembly is complex, the reliability is low, and the maintainability is poor. Meanwhile, as more leads are arranged between the two plates, electromagnetic interference can be generated between the leads, the effect of the leads for transmitting signals and data is influenced, the driving control efficiency is low, and the communication efficiency and the reliability between the plates are low.
Therefore, in the conventional technical scheme, more wires are needed for driving and controlling the LED lighting lamp, so that the problems of complex assembly, low reliability, poor maintainability and low communication efficiency are caused.
Disclosure of Invention
In view of this, embodiments of the present invention provide a single-bus half-duplex bidirectional communication LED driving device and an LED lighting fixture, aiming to solve the problems of complicated assembly, low reliability, poor maintainability and low communication efficiency caused by more wires required for driving and controlling the LED lighting fixture in the conventional technical solution.
The first aspect of the embodiment of the invention provides a single-bus half-duplex two-way communication LED driving device, which comprises a user interaction board and an illumination driving control board;
the user interaction panel includes:
the key module is used for generating a key signal according to user input;
the first control module is connected with the key module and used for generating a first single bus communication signal according to the key signal and generating an electric quantity display signal according to a second single bus communication signal;
the electric quantity display module is connected with the first control module and used for displaying electric quantity according to the electric quantity display signal;
the illumination drive control board includes:
the second control module is connected with the first control module and used for generating a control signal according to the first single-bus communication signal and generating a second single-bus communication signal according to a voltage detection signal;
and the voltage detection module is connected with the second control module and used for detecting the power supply voltage to generate the voltage detection signal.
In one embodiment, the lighting drive control board further comprises:
the driving module is connected with the second control module and used for generating a driving signal according to the control signal;
and the lighting module is connected with the driving module and used for emitting light according to the driving signal.
In one embodiment, the lighting drive control board further comprises:
the power supply module is connected with the voltage detection module and used for providing power supply voltage;
and the first voltage conversion module is connected with the power supply module and is used for performing voltage conversion and voltage stabilization on the power supply voltage so as to generate a first working voltage to supply power to each functional module on the illumination driving control board.
In one embodiment, the user interaction board further comprises:
and the second voltage conversion module is connected with the first control module and is used for performing voltage conversion and voltage stabilization on the power supply voltage so as to generate a second working voltage to supply power to each functional module on the user interaction board.
In one embodiment, the key module comprises a first key switch, a second key switch, a first resistor and a second resistor;
the first end of the first key switch is connected with the first end of the first resistor, the second end of the first resistor is connected with a second working voltage, the second end of the first key switch is connected with a power ground, the first end of the second key switch is connected with the first end of the second resistor, the second end of the second resistor is connected with the second working voltage, and the second end of the second key switch is connected with the power ground;
the first end of the first resistor is a first sub-key signal output end of the key module;
the first end of the second resistor is a second sub-key signal output end of the key module;
the first sub-key signal output end of the key module and the second sub-key signal output end of the key module are commonly formed as the key signal output end of the key module.
In one embodiment, the first control module comprises a first microprocessor;
the power supply end of the first microprocessor is connected with a second working power supply, and the power supply negative end of the first microprocessor is connected with a power ground;
the first general input and output end of the first microprocessor and the second general input and output end of the first microprocessor are jointly formed into a key signal input end of the first control module;
a third general input-output end of the first microprocessor, a fourth general input-output end of the first microprocessor, a fifth general input-output end of the first microprocessor and a sixth general input-output end of the first microprocessor jointly form an electric quantity display signal output end of the first control module;
and a seventh general input/output end of the first microprocessor is a first single-bus communication signal output end of the first control module and a second single-bus communication signal input end of the first control module.
In one embodiment, the power display module includes a first light emitting diode, a second light emitting diode, a third light emitting diode, a fourth light emitting diode, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor;
the cathode of the first light emitting diode is connected with the first end of the third resistor, the cathode of the second light emitting diode is connected with the first end of the fourth resistor, the cathode of the third light emitting diode is connected with the first end of the fifth resistor, the cathode of the fourth light emitting diode is connected with the first end of the sixth resistor, and the second end of the third resistor, the second end of the fourth resistor, the second end of the fifth resistor and the second end of the sixth resistor are connected with a power ground;
the anode of the first light-emitting diode is a first sub-electric quantity display signal input end of the electric quantity display module;
the anode of the second light-emitting diode is the input end of a second sub-electric quantity display signal of the electric quantity display module;
the anode of the third light-emitting diode is the third sub-electric quantity display signal input end of the electric quantity display module;
the anode of the fourth light emitting diode is the fourth sub-electric quantity display signal input end of the electric quantity display module;
the electric quantity display device comprises an electric quantity display module, a first sub-electric quantity display signal input end of the electric quantity display module, a second sub-electric quantity display signal input end of the electric quantity display module, a third sub-electric quantity display signal input end of the electric quantity display module and a fourth sub-electric quantity display signal input end of the electric quantity display module, wherein the first sub-electric quantity display signal input end of the electric quantity display module, the second sub-electric quantity display signal input end of the electric quantity display module, the third sub-electric quantity display signal input end of the electric quantity display module and the fourth sub-electric quantity display signal input end of the electric quantity display module form the electric quantity display signal input end of the electric quantity display module together.
In one embodiment, the second control module comprises a second microprocessor;
the power supply end of the second microprocessor is connected with a first working voltage, and the power supply negative end of the second microprocessor is connected with a power ground;
the first general input/output end of the second microprocessor is the first sub-control signal output end of the second control module;
the second general input and output end of the second microprocessor is the fifth sub-control signal output end of the second control module;
the third general input/output end of the second microprocessor is the sixth sub-control signal output end of the second control module;
the fourth universal input and output end of the second microprocessor is a fourth sub-control signal output end of the second control module;
a fifth general input/output end of the second microprocessor is a third sub-control signal output end of the second control module;
a sixth general input/output end of the second microprocessor is a second sub-control signal output end of the second control module;
a seventh general input/output end of the second microprocessor is a voltage detection signal input end of the second control module;
an eighth universal input/output end of the second microprocessor is a first single-bus communication signal input end of the second control module and a second single-bus communication signal output end of the second control module;
the first sub-control signal output end of the second control module, the second sub-control signal output end of the second control module, the third sub-control signal output end of the second control module, the fourth sub-control signal output end of the second control module, the fifth sub-control signal output end of the second control module, and the sixth sub-control signal output end of the second control module constitute a control signal output end of the second control module together.
In one embodiment, the voltage detection module comprises a seventh resistor, an eighth resistor and a first capacitor;
a second end of the eighth resistor is connected with a first end of the seventh resistor and a first end of the first capacitor, and a second end of the seventh resistor and a second end of the first capacitor are connected with a power ground;
a first end of the eighth resistor is a power supply voltage input end of the voltage detection module;
and the first end of the seventh resistor is connected with the voltage detection signal output end of the voltage detection module.
A second aspect of the embodiments of the present invention provides an LED lighting fixture, which includes the single-bus half-duplex bidirectional communication LED driving apparatus described above.
In the embodiment, the key module, the first control module and the electric quantity display module are arranged on the user interaction board, the second control module and the voltage detection module are arranged on the lighting drive control board, the first control module generates the first single-bus communication signal according to different key signals generated by the user operation key module and outputs the first single-bus communication signal to the second control module to control the plurality of LEDs to emit light, the second single-bus communication signal from the second control module is received, and the electric quantity display signal is generated according to the second single-bus communication signal to control the plurality of LEDs to display the electric quantity, so that connecting wires between the user interaction board and the lighting drive control board are reduced, the assembly complexity of the single-bus half-duplex two-way communication LED drive device is reduced, and the maintainability of the single-bus half-duplex two-way communication LED drive device is improved; meanwhile, electromagnetic interference generated by multiple wires connected between the two boards is reduced, the communication efficiency and the lighting driving control precision of the two boards are improved, and the unibus half-duplex bidirectional communication LED driving device is high in reliability and strong in practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a driving module and an illumination module of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of an illumination driving control board of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 6 is another schematic structural diagram of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram illustrating an exemplary circuit of a key module, a first control module and an electric quantity display module of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention;
fig. 8 is a schematic diagram of an exemplary circuit of a second control module of the single-bus half-duplex bidirectional-communication LED driving apparatus according to the embodiment of the present invention;
fig. 9 is a schematic circuit diagram of an example of a power module, a voltage detection module, a charging detection module, and a charging protection module of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic structural diagram of a single-bus half-duplex bidirectional communication LED driving apparatus according to an embodiment of the present invention is shown, for convenience of description, only the parts related to the embodiment are shown, and detailed descriptions are as follows:
a single-bus half-duplex two-way communication LED driving device comprises a user interaction board 100 and an illumination driving control board 200.
The user interaction board 100 includes a key module 101, a first control module 102, and a power display module 103.
The key module 101 is configured to generate a key signal according to a user input; the first control module 102 is connected with the key module 101, and is configured to generate a first single-bus communication signal according to the key signal, and generate an electric quantity display signal according to a second single-bus communication signal; the electric quantity display module 103 is connected to the first control module 102, and is configured to display the electric quantity according to the electric quantity display signal.
The illumination drive control board 200 includes a second control module 201 and a voltage detection module 202.
The second control module 201 is connected to the first control module 102, and is configured to generate a control signal according to the first single-bus communication signal and generate a second single-bus communication signal according to the voltage detection signal; the voltage detection module 202 is connected to the second control module 201, and is configured to detect a power supply voltage to generate a voltage detection signal.
In a specific implementation, the key module 101 includes at least one tact switch (key switch), and a user can input different key signals according to the tact switch (key switch) of the key module 101. The first control module 102 generates a control instruction according to the key signal, generates a first single bus communication signal according to the control instruction, outputs the first single bus communication signal to the second control module 201 through the single bus, and the second control module 201 generates a control signal according to the first single bus communication signal to control the lighting of the plurality of lighting LEDs. The second control module 202 detects the power supply voltage according to the voltage detection module 202 to generate a voltage detection signal, and then performs electric quantity calculation analysis according to the voltage detection signal to generate a second single bus communication signal, wherein the second single bus communication signal carries electric quantity information of the power supply voltage, the second single bus communication signal is transmitted to the first control module 102 through a single bus, the first control module 102 generates an electric quantity display signal according to the electric quantity information carried by the second single bus communication signal, and controls the electric quantity display module 103 to display the electric quantity, so that the key switch control, the electric quantity display control and the lighting drive control between the user interaction board 100 and the lighting drive control board 200 only need a small amount of wires (one communication wire and two power wires) for connection, and the single bus half-duplex bidirectional communication LED driving device is simple and convenient to assemble and high in maintainability; meanwhile, the communication between the two boards is less interfered by electromagnetic waves, the communication efficiency is high, and the precision and the reliability of the driving control and the electric quantity display control are high.
Referring to fig. 2, in one embodiment, the lighting driving control board 200 further includes a driving module 203 and a lighting module 204.
The driving module 203 is connected with the second control module 201 and is used for generating a driving signal according to the control signal; the illumination module 204 is connected to the driving module 203 and configured to emit light according to the driving signal.
In a specific implementation, optionally, the driving module 203 includes a plurality of sub-driving modules, and the lighting module 204 includes a plurality of sub-lighting modules, please refer to fig. 3, where N is a positive integer greater than or equal to 1, each sub-lighting module includes an LED, and a plurality of LEDs of the plurality of sub-lighting modules include a main lighting LED, a flood lighting LED, a red light LED, and a blue light LED. The control signal includes a plurality of sub-control signals, and the driving signal includes a plurality of sub-driving signals. The second control module 201 generates a plurality of sub-control signals according to the first single-bus communication signal to control the plurality of sub-driving modules to drive the plurality of LEDs to be lighted according to different combination modes or independently, so that the plurality of LEDs are driven to carry out main lighting, floodlighting, color temperature adjustment, warning lighting and the like.
In an implementation, referring to fig. 4, the lighting driving control board 200 further includes a charging detection module 207 and a charging protection module 208.
The charging detection module 207 is connected to the power supply module 205, and is configured to detect a charging voltage to generate a charging detection signal; the charging protection module 208 is connected to the charging detection module 207 and the power supply module 205, and is configured to perform charging protection on the power supply module 205; the second control module 201 is further configured to generate a control signal according to the charging detection signal to display the charging state of the power module 205.
In specific implementation, the charging detection module 207 detects whether a charging voltage exists to charge the battery of the power module 205, the second control module 201 generates a control signal (generates one or more sub-control signals) according to the charging detection signal to control the driving module 203 to drive one or more LEDs of the illumination module 204 to light up for indicating a charging state, and in combination with the voltage detection module 202, when the battery is fully charged, the second control module 201 drives the illumination module 203 to indicate the fully charged state, so that a user can fully and timely know whether the battery of the power module 205 is in the charging state or is fully charged, and the illumination in the charging state is reduced as much as possible to protect the service life of the battery and improve the service life of the single-bus half-duplex bidirectional communication LED driving device. The charging protection module 208 can turn off the charging voltage when the battery is fully charged, thereby avoiding overcharging the battery, further protecting the service life of the battery, and improving the reliability and practicability of the unibus half-duplex two-way communication LED driving device.
Referring to fig. 5, in one embodiment, the lighting driving control board 200 further includes a power module 205 and a first voltage conversion module 206.
The power supply module 205 is connected to the voltage detection module 202, and is configured to provide a power supply voltage; the first voltage conversion module 206 is connected to the power supply module 205, and is configured to perform voltage conversion and voltage stabilization on the power supply voltage to generate a first working voltage for supplying power to each functional module on the lighting driving control board 200.
In a specific implementation, the voltage values of the power supply voltage and the first operating voltage may be the same or different. When the voltage values of the power supply voltage and the first working voltage are different, the power supply voltage output by the power supply module 205 can be subjected to voltage conversion and voltage stabilization through the first voltage conversion module 206 to output a stable first working voltage, and power is supplied to functional modules such as the second control module 201 on the driving control board 200, and the power supply voltage output by the power supply module 205 is used for supplying power to the driving module 203 to drive the lighting module 204 to emit light for lighting. Optionally, the power module 205 is a lithium battery or a storage battery, can store and release electric energy, can be charged, can be repeatedly used, meets the power consumption requirements of different functional modules, and avoids the use of different power supplies to supply power to the second control module 201 and the driving module 203, so that the cost is saved, and the circuit structure is simple.
Referring to fig. 6, in one embodiment, the user interaction board 100 further includes a second voltage conversion module 104.
The second voltage conversion module 104 is connected to the first control module 102, and is configured to perform voltage conversion on the power supply voltage and stabilize the power supply voltage to generate a second working voltage for supplying power to each functional module on the user interaction board 100.
In specific implementation, the second voltage conversion module 104 performs voltage conversion and voltage stabilization on the power supply voltage provided by the power supply module 205 on the lighting drive control board 200 to generate a second power supply voltage to supply power to each functional module on the user interaction board 100, and the power supply line between the two boards is used to implement that one power supply is shared to supply power to the user interaction board 100 and the lighting drive control board 200, so that the setting of the power supply is reduced, and the cost is saved.
Referring to fig. 7, in one embodiment, the key module 101 includes a first key switch S1, a second key switch S2, a first resistor R1 and a second resistor R2.
A first terminal of the first key switch S1 is connected to a first terminal of the first resistor R1, a second terminal of the first resistor R1 is connected to the second operating voltage, a second terminal of the first key switch S1 is connected to the power ground, a first terminal of the second key switch S2 is connected to a first terminal of the second resistor R2, a second terminal of the second resistor R2 is connected to the second operating voltage, and a second terminal of the second key switch S2 is connected to the power ground.
The first end of the first resistor R1 is a first sub-key signal output end of the key module 101.
The first end of the second resistor R2 is the second sub-key signal output end of the key module 101.
The first sub-key signal output terminal of the key module 101 and the second sub-key signal output terminal of the key module 101 are commonly configured as a key signal output terminal of the key module 101.
Referring to FIG. 7, in one embodiment, the first control module 102 includes a first microprocessor U2.
The power supply terminal VDD of the first microprocessor U2 is connected to the second operating power supply, and the power supply negative terminal VSS of the first microprocessor U2 is connected to power ground.
The first general input/output terminal PA1 of the first microprocessor U2 and the second general input/output terminal PA3 of the first microprocessor U2 are commonly configured as a key signal input terminal of the first control module 102.
The third general input/output terminal PA4 of the first microprocessor U2, the fourth general input/output terminal PA5 of the first microprocessor U2, the fifth general input/output terminal PA6 of the first microprocessor and the sixth general input/output terminal PA7 of the first microprocessor U2 together constitute an electric quantity display signal output terminal of the first control module 102.
The seventh GPIO input PB0 of the first microprocessor U2 is a first single bus communication signal output of the first control module 102 and a second single bus communication signal input of the first control module 102.
Referring to fig. 7, in one embodiment, the power display module 103 includes a first LED1, a second LED2, a third LED3, a fourth LED4, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6.
The cathode of the first light emitting diode LED1 is connected to the first end of the third resistor R3, the cathode of the second light emitting diode LED2 is connected to the first end of the fourth resistor R4, the cathode of the third light emitting diode LED3 is connected to the first end of the fifth resistor R5, the cathode of the fourth light emitting diode LED4 is connected to the first end of the sixth resistor R6, and the second end of the third resistor R3, the second end of the fourth resistor R4, the second end of the fifth resistor R5, and the second end of the sixth resistor R6 are connected to ground.
The anode of the first LED1 is the first sub-power display signal input of the power display module 103. The anode of the second LED2 is the second sub-power display signal input of the power display module 103. The anode of the third LED3 is the third sub-power display signal input of the power display module 103. The anode of the fourth LED4 is the fourth sub-power display signal input of the power display module 103.
The first sub-electric quantity display signal input terminal of the electric quantity display module 103, the second sub-electric quantity display signal input terminal of the electric quantity display module 103, the third sub-electric quantity display signal input terminal of the electric quantity display module 103, and the fourth sub-electric quantity display signal input terminal of the electric quantity display module 103 constitute the electric quantity display signal input terminal of the electric quantity display module 103 together.
Referring to FIG. 8, in one embodiment, the second control module 201 includes a second microprocessor U9.
The power terminal VDD of the second microprocessor U9 is connected to the first operating voltage, and the power terminal VSS of the second microprocessor U9 is connected to power ground.
The first general-purpose input/output terminal PA0 of the second microprocessor U9 is the first sub control signal output terminal of the second control module 201. The second general input/output terminal PA2 of the second microprocessor U9 is the fifth sub-control signal output terminal of the second control module 201. The third general input/output terminal PA3 of the second microprocessor U9 is the sixth sub-control signal output terminal of the second control module 201. The fourth universal input-output terminal PA4 of the second microprocessor U9 is the fourth sub-control signal output terminal of the second control module 201. The fifth general input/output terminal PA5 of the second microprocessor U9 is the third sub control signal output terminal of the second control module 201. The sixth general input/output terminal PA7 of the second microprocessor U9 is the second sub control signal output terminal of the second control module 201.
The seventh GPIO input PB2 of the second microprocessor U9 is a voltage detection signal input of the second control module 201. The eighth GPIO port PB1 of the second microprocessor U9 is a first single bus communication signal input port of the second control module 201 and a second single bus communication signal output port of the second control module 201.
The first sub-control signal output end of the second control module 201, the second sub-control signal output end of the second control module 201, the third sub-control signal output end of the second control module 201, the fourth sub-control signal output end of the second control module 201, the fifth sub-control signal output end of the second control module 201, and the sixth sub-control signal output end of the second control module 201 constitute a control signal output end of the second control module together.
Referring to fig. 9, in one embodiment, the voltage detection module includes a seventh resistor R7, an eighth resistor R8, and a first capacitor C1.
A second terminal of the eighth resistor R8 is connected to a first terminal of the seventh resistor R7 and a first terminal of the first capacitor C1, and a second terminal of the seventh resistor R7 and a second terminal of the first capacitor C1 are connected to ground.
A first terminal of the eighth resistor R8 is a supply voltage input terminal of the voltage detection module. The first end of the seventh resistor R7 is a voltage detection signal output end of the voltage detection module.
In a specific implementation, the second microprocessor U9 receives the charging detection signal through the general-purpose input/output terminal, the second microprocessor U9 generates the control signal according to the charging detection signal to control the driving module 203 to drive the lighting module 204 to display the charging state of the battery of the power module 205, and also generates the control signal according to the voltage detection signal and the charging detection signal to control the driving module 203 to drive the lighting module 204 to display the fully charged state of the battery. The first operating voltage VCC _1 and the second operating voltage VCC _2 may be the same or different. The first voltage conversion module 206 generates a first working voltage VCC _1 of 5V or 2.8V according to the supply voltage VBAT to supply power to the functional modules on the lighting driving control board 200; the second voltage conversion module 104 generates a second working voltage VCC _2 of 5V or 2.8V according to the supply voltage VBAT to supply power to the functional module on the user interaction board 100.
The following will briefly explain the working principle of the single-bus half-duplex two-way communication LED driving device with reference to fig. 7 to 9:
a plurality of sub-key signals are generated according to the operation of the key switches (the first key switch S1 and the second key switch S2) of the key module 101 by a user and are output to a first general input/output terminal PA1 of the first microprocessor U2 and a second general input/output terminal PA3 of the first microprocessor U2, the first microprocessor U2 generates a first single-bus communication signal according to the key signals and outputs the first single-bus communication signal to an eighth general input/output terminal PB1 of the second microprocessor U9 of the second microprocessor U9 through a seventh general input/output terminal PB0 of the first microprocessor U2, a control signal generated by the second microprocessor U9 according to the first single-bus communication signal passes through a first general input/output terminal PA0 of the second microprocessor U9, a second general input/output terminal PA2 of the second microprocessor U9, a third general input/output terminal PA3 of the second microprocessor U9, a fourth general input/output terminal PA 36 PA4 of the second microprocessor U9, The fifth general input-output end PA5 of the second microprocessor U9 and the sixth general input-output end PA7 of the second microprocessor U9 are output to the driving module 203, and the driving module 203 is controlled to drive the LEDs of the lighting module 204 to perform strong light illumination, floodlight illumination, warning illumination, and the like; the voltage detection module 202 detects a voltage detection signal generated by the power supply voltage VBAT through a voltage division resistor (a seventh resistor R7 and an eighth resistor R8) and outputs the voltage detection signal to a seventh universal input/output terminal PB2 of the second microprocessor U9, the second microprocessor U9 generates a second single bus communication signal according to the voltage detection signal and outputs the second single bus communication signal to a seventh universal input/output terminal PB0 of the first microprocessor U2 through an eighth universal input/output terminal PB1 of the second microprocessor U9, the first microprocessor U2 generates an electric quantity display signal according to the second single bus communication signal and outputs the electric quantity display signal to the electric quantity display module 103 through a third universal input/output terminal PA4 of the first microprocessor U2, a fourth universal input/output terminal PA5 of the first microprocessor U2, a fifth universal input/output terminal PA6 of the first microprocessor and a sixth universal input/output terminal PA7 of the first microprocessor U2, and controls light emitting diodes (a first light emitting diode 1, a second light emitting diode 1, a light emitting diode b) of the electric quantity display module 103, The second light emitting diode LED2, the third light emitting diode LED3, and the fourth light emitting diode LED4) to display the amount of power; therefore, communication and data interaction between the first microprocessor U2 and the second microprocessor U9 are realized through a single bus, power supply to the functional modules on the user interaction board 100 and the functional modules on the illumination driving control board 200 is realized through a power line and a ground line between the two boards, the control on electric quantity display between the two boards of the traditional LED driving device needs at least 5 leads, and the control on driving LED light-emitting illumination by the two key switches (the first key switch S1 and the second key switch S2) needs at least 3 leads.
The invention provides an LED lighting lamp, which comprises the single-bus half-duplex bidirectional communication LED driving device.
The LED lighting lamp provided by the embodiment of the invention has the advantages that the connecting wires between the user interaction board and the lighting drive control board are few, the assembly complexity of the LED lighting lamp is reduced, and the maintainability of the LED lighting lamp is improved; meanwhile, electromagnetic interference generated by multiple wires connected between the two plates is reduced, the communication efficiency of the two plates and the control precision of lighting driving are improved, and the LED lighting lamp is high in reliability and strong in practicability.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A single-bus half-duplex two-way communication LED driving device is characterized by comprising a user interaction board and an illumination driving control board;
the user interaction panel includes:
the key module is used for generating a key signal according to user input;
the first control module is connected with the key module and used for generating a first single bus communication signal according to the key signal and generating an electric quantity display signal according to a second single bus communication signal;
the electric quantity display module is connected with the first control module and used for displaying electric quantity according to the electric quantity display signal;
the illumination drive control board includes:
the second control module is connected with the first control module and used for generating a control signal according to the first single-bus communication signal and generating a second single-bus communication signal according to a voltage detection signal;
and the voltage detection module is connected with the second control module and used for detecting the power supply voltage to generate the voltage detection signal.
2. The single bus half-duplex, two-way communication LED driving apparatus of claim 1, wherein the lighting drive control board further comprises:
the driving module is connected with the second control module and used for generating a driving signal according to the control signal;
and the lighting module is connected with the driving module and used for emitting light according to the driving signal.
3. The single bus half-duplex, two-way communication LED driving apparatus of claim 1, wherein the lighting drive control board further comprises:
the power supply module is connected with the voltage detection module and used for providing power supply voltage;
and the first voltage conversion module is connected with the power supply module and is used for performing voltage conversion and voltage stabilization on the power supply voltage so as to generate a first working voltage to supply power to each functional module on the illumination driving control board.
4. The single bus half-duplex, two-way communication LED driving apparatus of claim 3, wherein the user interaction board further comprises:
and the second voltage conversion module is connected with the first control module and is used for performing voltage conversion and voltage stabilization on the power supply voltage so as to generate a second working voltage to supply power to each functional module on the user interaction board.
5. The single-bus half-duplex two-way communication LED driving apparatus according to claim 4, wherein the key module includes a first key switch, a second key switch, a first resistor, and a second resistor;
the first end of the first key switch is connected with the first end of the first resistor, the second end of the first resistor is connected with a second working voltage, the second end of the first key switch is connected with a power ground, the first end of the second key switch is connected with the first end of the second resistor, the second end of the second resistor is connected with the second working voltage, and the second end of the second key switch is connected with the power ground;
the first end of the first resistor is a first sub-key signal output end of the key module;
the first end of the second resistor is a second sub-key signal output end of the key module;
the first sub-key signal output end of the key module and the second sub-key signal output end of the key module are commonly formed as the key signal output end of the key module.
6. The single-bus half-duplex, bi-directional communication LED driving apparatus of claim 1, wherein the first control module comprises a first microprocessor;
the power supply end of the first microprocessor is connected with a second working power supply, and the power supply negative end of the first microprocessor is connected with a power ground;
the first general input and output end of the first microprocessor and the second general input and output end of the first microprocessor are jointly formed into a key signal input end of the first control module;
a third general input-output end of the first microprocessor, a fourth general input-output end of the first microprocessor, a fifth general input-output end of the first microprocessor and a sixth general input-output end of the first microprocessor jointly form an electric quantity display signal output end of the first control module;
and a seventh general input/output end of the first microprocessor is a first single-bus communication signal output end of the first control module and a second single-bus communication signal input end of the first control module.
7. The single-bus half-duplex bi-directional communication LED driving apparatus of claim 1, wherein the power display module comprises a first LED, a second LED, a third LED, a fourth LED, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor;
a cathode of the first light emitting diode is connected with a first end of the third resistor, a cathode of the second light emitting diode is connected with a first end of the fourth resistor, a cathode of the third light emitting diode is connected with a first end of the fifth resistor, a cathode of the fourth light emitting diode is connected with a first end of the sixth resistor, and a second end of the third resistor, a second end of the fourth resistor, a second end of the fifth resistor and a second end of the sixth resistor are connected with a power ground;
the anode of the first light-emitting diode is a first sub-electric quantity display signal input end of the electric quantity display module;
the anode of the second light-emitting diode is the input end of a second sub-electric quantity display signal of the electric quantity display module;
the anode of the third light-emitting diode is the third sub-electric quantity display signal input end of the electric quantity display module;
the anode of the fourth light emitting diode is the fourth sub-electric quantity display signal input end of the electric quantity display module;
the electric quantity display device comprises an electric quantity display module, a first sub-electric quantity display signal input end of the electric quantity display module, a second sub-electric quantity display signal input end of the electric quantity display module, a third sub-electric quantity display signal input end of the electric quantity display module and a fourth sub-electric quantity display signal input end of the electric quantity display module, wherein the first sub-electric quantity display signal input end of the electric quantity display module, the second sub-electric quantity display signal input end of the electric quantity display module, the third sub-electric quantity display signal input end of the electric quantity display module and the fourth sub-electric quantity display signal input end of the electric quantity display module form the electric quantity display signal input end of the electric quantity display module together.
8. The single-bus half-duplex, bi-directional communication LED driving apparatus of claim 3, wherein the second control module comprises a second microprocessor;
the power supply end of the second microprocessor is connected with a first working voltage, and the power supply negative end of the second microprocessor is connected with a power ground;
the first general input/output end of the second microprocessor is the first sub-control signal output end of the second control module;
the second general input and output end of the second microprocessor is the fifth sub-control signal output end of the second control module;
the third general input/output end of the second microprocessor is the sixth sub-control signal output end of the second control module;
the fourth universal input and output end of the second microprocessor is a fourth sub-control signal output end of the second control module;
a fifth general input/output end of the second microprocessor is a third sub-control signal output end of the second control module;
a sixth general input/output end of the second microprocessor is a second sub-control signal output end of the second control module;
a seventh general input/output end of the second microprocessor is a voltage detection signal input end of the second control module;
an eighth universal input/output end of the second microprocessor is a first single-bus communication signal input end of the second control module and a second single-bus communication signal output end of the second control module;
the first sub-control signal output end of the second control module, the second sub-control signal output end of the second control module, the third sub-control signal output end of the second control module, the fourth sub-control signal output end of the second control module, the fifth sub-control signal output end of the second control module, and the sixth sub-control signal output end of the second control module constitute a control signal output end of the second control module together.
9. The single-bus half-duplex two-way communication LED driving apparatus of claim 1, wherein the voltage detection module comprises a seventh resistor, an eighth resistor, and a first capacitor;
a second end of the eighth resistor is connected with a first end of the seventh resistor and a first end of the first capacitor, and a second end of the seventh resistor and a second end of the first capacitor are connected with a power ground;
a first end of the eighth resistor is a power supply voltage input end of the voltage detection module;
and the first end of the seventh resistor is connected with the voltage detection signal output end of the voltage detection module.
10. An LED lighting fixture, characterized in that it comprises a single-bus half-duplex two-way communication LED driving device according to any one of claims 1 to 9.
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| CN110602831A (en) | 2019-12-20 |
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