CN204291487U - Based on the LED automatic addressing circuit of DMX512, light fixture and system - Google Patents
Based on the LED automatic addressing circuit of DMX512, light fixture and system Download PDFInfo
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- CN204291487U CN204291487U CN201420752188.0U CN201420752188U CN204291487U CN 204291487 U CN204291487 U CN 204291487U CN 201420752188 U CN201420752188 U CN 201420752188U CN 204291487 U CN204291487 U CN 204291487U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model is applicable to field of LED illumination, and provide a kind of LED automatic addressing circuit based on DMX512 agreement, light fixture and system, this circuit comprises: processing unit; Geocoding control unit, its control end is connected with processing unit; First converting unit, its differential input end is connected with two normally closed outputs of geocoding control unit, and its output is connected with the signal receiving end of processing unit, and its control end is connected with processing unit; Second converting unit, its input is connected with the signal sending end of processing unit, and its difference output end is often opened input with two of geocoding control unit and is connected, and its control end is connected with processing unit.The utility model makes LED lamp be in the state of parallel connection or series connection by controlling geocoding control unit, and realizes driving by converting unit when series connection, then realizes automatic addressing and control by processing unit address of adding up, operative intelligence.
Description
Technical field
The utility model belongs to field of LED illumination, particularly relates to a kind of LED automatic addressing circuit based on DMX512 agreement, LED lamp and LED illumination control system.
Background technology
Current era, under the background that the worry of global energy shortage raises once again, energy savings is the important problem that we will face future.LED luminous product is long with the life-span, the features such as low, energy-conservation and environmental protection of generating heat, and it is applied widely at lighting field, and LED is more described as a kind of novel green light source product.Along with the development of technology, LED illumination lamp expands its range of application just at faster speed.
At present, market there is the LED lamp product of a lot of international standard DMX512 protocol integrated test system, be mainly used in view brightening, light of stage etc.The address coding method of these series of products regulates address by key circuit on light fixture, and light fixture realizes regulating light fixture address 1 to 512 by additional key circuit, is then stored in storage chip, by LED numeral method address information.
But, the addressing method of this product needs manually to go to regulate each DMX512 agreement LED lamp, and in use, complex operation, operating time are long, and, because the address of all LED lamp on one group of DMX512 passage can not be repeated, be therefore unfavorable for installation and the maintenance of product.
Utility model content
The object of the utility model embodiment is to provide a kind of LED lamp automatic addressing circuit based on DMX512 agreement, be intended to solve at present in the LED lamp of DMX512 consensus standard manually key mode realize the problem that addressing controls to cause complex operation, operating time long.
The utility model embodiment is achieved in that a kind of LED automatic addressing circuit based on DMX512 agreement, and its differential transfer end is connected with iversion controller by bus, and its output is connected with LED lamp, and described automatic addressing circuit comprises:
Generate the processing unit of switch-over control signal, changeover control signal and drive control signal, the output of described processing unit is the output of described automatic addressing circuit;
Receive DMX512 light fixture control signal, and according to switch-over control signal, DMX512 light fixture control signal is converted to differential sense signal, multiple LED lamp is made to be parallel to geocoding control unit in described bus, the control end of described geocoding control unit is connected with the 3rd general input/output terminal (I/O) of described processing unit, and the common port of described geocoding control unit is the differential transfer end of described automatic addressing circuit;
According to described changeover control signal, differential sense signal is converted to the first converting unit of TTL detection signal, the differential input end of described first converting unit is connected with two normally closed outputs of described geocoding control unit, the output of described first converting unit is connected with the signal receiving end (RXD) of described processing unit, and the control end of described first converting unit is connected with the first universal input output (H/L) of described processing unit;
According to described changeover control signal, TTL drive control signal is converted to the second converting unit of differential driving control signal, the input of described second converting unit is connected with the signal sending end (TXD) of described processing unit, the difference output end of described second converting unit is often opened input with two of described geocoding control unit and is connected, described differential driving control signal is received according to switch-over control signal to make described geocoding control unit, multiple LED lamp is made to be series in described bus, the control end of described second converting unit is connected with the second universal input output (H/L) of described processing unit.
Further, described first converting unit is a RS485 communication module, two data terminals of a described RS485 communication module are the differential input end of described first converting unit, the output of a described RS485 communication module is the output of described first converting unit, and the reset terminal of a described RS485 communication module is the control end of described first converting unit;
Described second converting unit is the 2nd RS485 communication module, the input of described 2nd RS485 communication module is the input of described second converting unit, two data terminals of described 2nd RS485 communication module are the difference output end of described second converting unit, and the reset terminal of a described RS485 communication module is the control end of described first converting unit.
Further, described first converting unit also comprises:
Two-way TVS voltage-stabiliser tube Z1, two-way TVS voltage-stabiliser tube Z2, resistance R1, resistance R2, resistance R4, resistance R5;
One of two data terminals of a described RS485 communication module are connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z1, one end of described resistance R1 and described resistance R2 respectively, second end of described two-way TVS voltage-stabiliser tube Z1 and the other end of described resistance R1 ground connection simultaneously, the other end of described resistance R2 is a differential input end of described first converting unit;
Another of two data terminals of a described RS485 communication module is connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z2, one end of described resistance R5 and described resistance R4 respectively, second end of described two-way TVS voltage-stabiliser tube Z2 and the other end of described resistance R5 ground connection simultaneously, the other end of described resistance R4 is another differential input end of described first converting unit;
Described second converting unit also comprises:
Two-way TVS voltage-stabiliser tube Z3, two-way TVS voltage-stabiliser tube Z4, resistance R6, resistance R8, resistance R9, resistance R11;
One of two data terminals of described 2nd RS485 communication module are connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z4, one end of described resistance R6 and described resistance R8 respectively, second end of described two-way TVS voltage-stabiliser tube Z4 and the other end of described resistance R6 ground connection simultaneously, the other end of described resistance R8 is a differential input end of described first converting unit;
Another of two data terminals of described 2nd RS485 communication module is connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z5, one end of described resistance R11 and described resistance R9 respectively, second end of described two-way TVS voltage-stabiliser tube Z5 and the other end of described resistance R11 ground connection simultaneously, the other end of described resistance R9 is another differential input end of described first converting unit.
Further, a described RS485 communication module comprises:
Electric capacity C1, resistance R3 and MAX1487 type communication chip (U1);
The power end of described MAX1487 type communication chip (U1) connects supply voltage, and by described electric capacity C1 ground connection, the reset terminal of described MAX1487 type communication chip (U1) and transmitting-receiving control end (DE) are that the control end of a described RS485 communication module is by described resistance R3 ground connection simultaneously, the output of described MAX1487 type communication chip (U1) is a described RS485 communication module output, and two data terminals of described MAX1487 type communication chip (U1) are described RS485 communication module two data terminal;
Described 2nd RS485 communication module comprises:
Electric capacity C2 and MAX1487 type communication chip (U2);
The power end of described MAX1487 type communication chip (U2) connects supply voltage, and by described electric capacity C2 ground connection, the reset terminal of described MAX1487 type communication chip (U2) and transmitting-receiving control end (DE) are the control end of described 2nd RS485 communication module simultaneously, the input (DI) of described MAX1487 type communication chip (U2) is described 2nd RS485 communication module input, and two data terminals of described MAX1487 type communication chip (U2) are described 2nd RS485 communication module two data terminal.
Further, described geocoding control unit comprises:
Resistance R7, resistance R10, diode D1, the first switching tube Q1 and two-way relay;
One end of described resistance R7 is the control end of described geocoding control unit, the other end of described resistance R7 is connected with one end of described resistance R10 and the control end of described first switching tube simultaneously, the other end of described resistance R10 and the output of described first switching tube ground connection simultaneously, the input of described first switching tube is connected with the anode of described diode D1, the negative electrode of described diode D1 is the power end connection supply voltage of described geocoding control unit, the anode of described diode D1 is also connected with the coil two ends of described two-way relay with negative electrode, two normal-closed ends of described two-way relay are two normally closed outputs of described geocoding control unit, two Chang Kaiduan of described two-way relay be described geocoding control unit often open input, two common ports of described two-way relay are the common port of described geocoding control unit.
Further, described first switching tube is NPN type triode;
The input of very described first switching tube of current collection of described NPN type triode, the base stage of described NPN type triode is the control end of described first switching tube, the output of very described first switching tube of transmitting of described NPN type triode.
Further, described automatic addressing circuit also comprises:
Be convenient to the output port (POUT) of grafting, described output port is connected with the differential transfer end of described automatic addressing circuit.
Further, described automatic addressing circuit also comprises:
DC D.C. regulated power supply, for providing stable supply voltage, the output of described DC D.C. regulated power supply is connected with the power end of described processing unit, described first converting unit, described second converting unit, described geocoding control unit respectively.
Another object of the utility model embodiment is to provide a kind of LED lamp adopting the above-mentioned LED automatic addressing circuit based on DMX512 agreement.
Another object of the utility model embodiment is to provide a kind of LED illumination control system based on DMX512 agreement, the main controller that described LED illumination control system comprises host computer, is connected with described host computer, the iversion controller that multiple and described main controller is connected and the above-mentioned LED lamp based on DMX512 agreement.
The utility model embodiment makes multiple LED lamp be in the state of parallel connection or series connection by controlling geocoding control unit, and drive control signal and addressing signal is received by converting unit when series connection, again by processing unit add up address realize the automatic addressing of LED lamp is controlled, this circuit is without the need to manual operation, substantially increase the addressing efficiency of LED lamp, make product more intelligent, and circuit is simple, is convenient to the installation and maintenance of product.
Accompanying drawing explanation
The structure chart of the LED automatic addressing circuit based on DMX512 agreement that Fig. 1 provides for the utility model embodiment;
The exemplary circuit structure chart based on first, second switch unit in the LED automatic addressing circuit of DMX512 agreement that Fig. 2 provides for the utility model embodiment;
The exemplary circuit structure chart based on geocoding control unit in the LED automatic addressing circuit of DMX512 agreement that Fig. 3 provides for the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model embodiment.
Below in conjunction with specific embodiment, realization of the present utility model is described in detail:
Fig. 1 shows the structure of the LED automatic addressing circuit based on DMX512 agreement that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model.
As the utility model one embodiment, can should be applied in any LED lamp and LED illumination control system based on the LED automatic addressing circuit of DMX512 agreement.
As the utility model one embodiment, should be connected with iversion controller 5 by bus based on the differential transfer end of the LED automatic addressing circuit 1 of DMX512 agreement, its output is connected with LED lamp 2, comprising:
Processing unit 11, generate switch-over control signal, changeover control signal and drive control signal, the output of processing unit 11 is the output of automatic addressing circuit;
Geocoding control unit 13, for receiving DMX512 light fixture control signal, and according to switch-over control signal, DMX512 light fixture control signal is converted to differential sense signal, multiple LED lamp is made to be parallel in bus, the control end of this geocoding control unit 13 is connected with the 3rd general input/output terminal (I/O) of processing unit 11, and the common port of geocoding control unit 13 is the differential transfer end of automatic addressing circuit;
First converting unit 12A, for differential sense signal being converted to TTL (Transistor-Transistor Logic) detection signal according to changeover control signal, the differential input end of this first converting unit 12A is connected with two normally closed outputs of geocoding control unit 13, the output of the first converting unit 12A is connected with the signal receiving end (RXD) of processing unit 11, and the control end of the first converting unit 12A is connected with the first universal input output (H/L) of processing unit 11;
Second converting unit 12B, for TTL drive control signal being converted to differential driving control signal according to changeover control signal, the input of this second converting unit 12B is connected with the signal sending end (TXD) of processing unit 11, the difference output end of the second converting unit 12B and two of geocoding control unit 13 is often opened input and is connected, differential driving control signal is received according to switch-over control signal to make geocoding control unit 13, multiple LED lamp 2 is made to be series in bus, the control end of the second converting unit 12B is connected with the second universal input output (H/L) of processing unit 11.
In the utility model embodiment, when being in initial condition, geocoding control unit 13 is defaulted as and is placed in normal-closed end, be connected with the first converting unit 12A, DMX512 light fixture control signal is converted to differential sense signal, first converting unit 12A also gives tacit consent to when initial condition differential sense signal is converted to TTL detection signal to processing unit 11, processing unit 11 extracts control command from the DMX512 light fixture control signal after conversion, and then generation switch-over control signal, changeover control signal and drive control signal, control geocoding control unit 13 respectively again, first converting unit 12A and the second converting unit 12B.
In the utility model embodiment, processing unit 11 generates switch-over control signal after receiving the DMX512 light fixture control signal after conversion process, the DMX512 light fixture control signal received from iversion controller 5 is converted to differential sense signal according to switch-over control signal by geocoding control unit 13, this differential signal is exported to processing unit 11 after being converted to TTL detection signal by the first converting unit 12A and is decoded, whether to identify in DMX512 control signal containing geocoding order, the machine address is confirmed containing after geocoding order when recognizing in DMX512 control signal, T.G Grammar control signal controls geocoding control unit 13 and enters normally open again, receive described differential driving control signal, multiple LED lamp 2 is made to be series in bus, meanwhile, the machine address is added 1, by the second converting unit 12B, TTL drive control signal is converted to differential driving control signal by processing unit 11, export to geocoding control unit 13 to complete to next LED lamp.
In the utility model embodiment, after processing unit 11 pairs of DMX512 control signal decodings, if DMX512 control signal contains geocoding order, then can obtain drive control signal and addressing signal, when not receiving addressing signal, processing unit 11 T.G Grammar control signal controls the first converting unit and is in receiving state signal, and control geocoding control unit 13 by the switch-over control signal generated and be in normally off, make all LED lamp 2 be in parallel connection in DMX512 bus, because all LED lamp 2 are in parallel connection when not receiving addressing signal, LED lamp 2 in all DMX512 of being connected in parallel on buses is after receiving addressing signal, processing unit 11 controls geocoding control unit 13 by the switch-over control signal generated and is switched to normally open, all LED lamp 2 are made to be in series model, open differential transfer end AO+, BO-, only from DMX512 control signal first light fixture out receive and the drive control signal that DMX512 control signal decodes out time, namely address 1 is obtained, second light fixture is sent to after address being added 1 by processing unit 11 again, by that analogy, autocoding completes autocoding to last light fixture,
In addition, in an initial condition, think that LED lamp 2 is in parallel connection.
In the utility model embodiment, first converting unit 12A and the second converting unit 12B is after the changeover control signal receiving processing unit 11 output, realize changing between differential signal and TTL signal, processing unit 11 realizes the transmission of drive control signal and address signal between LED lamp 2 by two-way converting unit, thus driving LED light fixture 2.
The utility model embodiment makes multiple LED lamp be in the state of parallel connection or series connection by controlling geocoding control unit, and drive control signal and addressing signal is received by converting unit when series connection, again by processing unit add up address realize the automatic addressing of LED lamp is controlled, this circuit is without the need to manual operation, substantially increase the addressing efficiency of LED lamp, make product more intelligent, and circuit is simple, is convenient to the installation and maintenance of product.
Fig. 2 shows the exemplary circuit structure based on first, second switch unit in the LED automatic addressing circuit of DMX512 agreement that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model.
As the utility model one embodiment, this first converting unit 12A can adopt a RS485 communication module;
Wherein, two data terminals of the one RS485 communication module are the differential input end of the first converting unit 12A, the output of the one RS485 communication module is the output of the first converting unit 12A, and the reset terminal of a RS485 communication module is the control end of the first converting unit 12A;
Preferably, the first converting unit 12A also comprises:
Two-way TVS voltage-stabiliser tube Z1, two-way TVS voltage-stabiliser tube Z2, resistance R1, resistance R2, resistance R4, resistance R5;
One of two data terminals of one RS485 communication module are connected with one end of the two-way first end of TVS voltage-stabiliser tube Z1, one end of resistance R1 and resistance R2 respectively, second end of two-way TVS voltage-stabiliser tube Z1 and the other end of resistance R1 ground connection simultaneously, the other end of resistance R2 is a differential input end of the first converting unit 12A;
Another of two data terminals of the one RS485 communication module is connected with one end of the two-way first end of TVS voltage-stabiliser tube Z2, one end of resistance R5 and resistance R4 respectively, second end of two-way TVS voltage-stabiliser tube Z2 and the other end of resistance R5 ground connection simultaneously, the other end of resistance R4 is another differential input end of the first converting unit 12A.
As the utility model one embodiment, the second converting unit 12B can adopt the 2nd RS485 communication module;
Wherein, the input of the 2nd RS485 communication module is the input of the second converting unit 12B, two data terminals of the 2nd RS485 communication module are the difference output end of the second converting unit 12B, and the reset terminal of a RS485 communication module is the control end of the first converting unit 12A.
Preferably, the second converting unit 12B also comprises:
Two-way TVS voltage-stabiliser tube Z3, two-way TVS voltage-stabiliser tube Z4, resistance R6, resistance R8, resistance R9, resistance R11;
One of two data terminals of 2nd RS485 communication module are connected with one end of the two-way first end of TVS voltage-stabiliser tube Z4, one end of resistance R6 and resistance R8 respectively, second end of two-way TVS voltage-stabiliser tube Z4 and the other end of resistance R6 ground connection simultaneously, the other end of resistance R8 is a differential input end of the first converting unit 12A;
Another of two data terminals of the 2nd RS485 communication module is connected with one end of the two-way first end of TVS voltage-stabiliser tube Z5, one end of resistance R11 and resistance R9 respectively, second end of two-way TVS voltage-stabiliser tube Z5 and the other end of resistance R11 ground connection simultaneously, the other end of resistance R9 is another differential input end of the first converting unit 12A.
As the utility model one preferred embodiment, a RS485 communication module comprises:
Electric capacity C1, resistance R3 and MAX1487 type communication chip (U1);
The power end of MAX1487 type communication chip (U1) connects supply voltage VCC, and by electric capacity C1 ground connection, it is that the control end of a RS485 communication module is by resistance R3 ground connection that the reset terminal of MAX1487 type communication chip (U1) and transmitting-receiving control (RE/DE) simultaneously, the output of MAX1487 type communication chip (U1) is a RS485 communication module output, and two data terminals of MAX1487 type communication chip (U1) are RS485 communication module two data terminal;
2nd RS485 communication module comprises:
Electric capacity C2 and MAX1487 type communication chip (U2);
The power end of MAX1487 type communication chip (U2) connects supply voltage VCC, and by electric capacity C2 ground connection, the reset terminal of MAX1487 type communication chip (U2) and transmitting-receiving control the control end that (RE/DE) is the 2nd RS485 communication module simultaneously, the input (DI) of MAX1487 type communication chip (U2) is the 2nd RS485 communication module input, and two data terminals of MAX1487 type communication chip (U2) are the 2nd RS485 communication module two data terminal.
In the utility model embodiment, Z1, Z2 and Z4, Z5 play the object of protection the one RS485 communication module and the 2nd RS485 communication module.
First change-over circuit 12A is bi-directionally connected by serial ports RXD and TXD of processing unit 11 and processing unit 11, and the second change-over circuit 12B is connected with processing unit 11 is unidirectional by the serial ports TXD of processing unit 11.
Fig. 3 shows the exemplary circuit structure based on geocoding control unit in the LED automatic addressing circuit of DMX512 agreement that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model.
As the utility model one embodiment, this geocoding control unit 13 comprises:
Resistance R7, resistance R10, diode D1, the first switching tube Q1 and two-way relay R L1;
One end of resistance R7 is the control end of geocoding control unit 13, the other end of resistance R7 is connected with one end of resistance R10 and the control end of the first switching tube Q1 simultaneously, the other end of resistance R10 and the output of the first switching tube Q1 grounding connection simultaneously, the input of the first switching tube Q1 is connected with the anode of diode D1, the negative electrode of diode D1 is the power end connection supply voltage of geocoding control unit 13, the anode of diode D1 and negative electrode also with the coil two ends (P1 of two-way relay R L1, P2) connect, two normal-closed end (the P5 of two-way relay R L1, P6) be two normally closed output (Ai+ of geocoding control unit 13, Bi-), two Chang Kaiduan (the P7 of two-way relay R L1, P8) input (A2+ is often opened for geocoding control unit 13, B2-), two common port (the P3 of two-way relay R L1, P4) be the common port (Ao+ of geocoding control unit 13, Bo-).
Preferably, the first switching tube is NPN type triode;
The input of the current collection of NPN type triode very the first switching tube, the base stage of NPN type triode is the control end of the first switching tube, the output of the transmitting of NPN type triode very the first switching tube.
As the utility model one preferred embodiment, automatic addressing circuit can also comprise:
Be convenient to the output port (POUT) of grafting, output port is connected with the differential transfer end of automatic addressing circuit.
As the utility model one preferred embodiment, automatic addressing circuit can also comprise:
DC D.C. regulated power supply, for providing stable supply voltage, the output of DC D.C. regulated power supply is connected with the power end of processing unit 11, first converting unit 12A, the second converting unit 12B, geocoding control unit 13 respectively.
In the utility model embodiment, resistance R7 and resistance R10 forms the base stage control end of the first switching tube Q1, processing unit 11 controls the conducting of the first switching tube Q1 by switch-over control signal, and then two groups of switch adhesives or the disconnection of two-way relay R L1 is controlled by the same power-off of coil, wherein, diode D3 prevents overcurrent, and relay R L1 common port Ao+, Bo-are connected with iversion controller as differential transfer end, and Ai+, Bi-and A2+, B2-switch with its parallel connection and connecting realizing signal in addition.
Another object of the utility model embodiment is to provide a kind of LED lamp adopting the above-mentioned LED automatic addressing circuit based on DMX512 agreement.And
Based on a LED illumination control system for DMX512 agreement, this system comprises:
Host computer 3, the main controller 4 be connected with host computer 3, the LED automatic addressing circuit 1 based on DMX512 agreement in the multiple iversion controllers 5 be connected with main controller 4 and above-described embodiment and LED lamp 2.
In the utility model embodiment, the built-in control software design of computer host computer 3, by Ethernet interface configuration main controller 4, is dealt into main controller 4 by light controling signal and light fixture display data.Main controller 4 is according to distributing corresponding data after the processing data information received to each DMX512 iversion controller 5, DMX512 iversion controller 5 generates standard DMX512 control signal according to the signal received, DMX512 control signal is sent by RS485 bus, certainly can the multiple light fixture of carry in this bus, the address that light fixture pre-sets according to self is intercepted and captured corresponding control signal from RS485 bus and is completed relevant control operation.
The utility model embodiment makes multiple LED lamp be in the state of parallel connection or series connection by controlling geocoding control unit, and drive control signal and addressing signal is received by converting unit when series connection, again by processing unit add up address realize the automatic addressing of LED lamp is controlled, this circuit is without the need to manual operation, substantially increase the addressing efficiency of LED lamp, make product more intelligent, and circuit is simple, is convenient to the installation and maintenance of product.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. based on a LED automatic addressing circuit for DMX512 agreement, its differential transfer end is connected with iversion controller by bus, and its output is connected with LED lamp, it is characterized in that, described automatic addressing circuit comprises:
Generate the processing unit of switch-over control signal, changeover control signal and drive control signal, the output of described processing unit is the output of described automatic addressing circuit;
Receive DMX512 light fixture control signal, and according to switch-over control signal, DMX512 light fixture control signal is converted to differential sense signal, multiple LED lamp is made to be parallel to geocoding control unit in described bus, the control end of described geocoding control unit is connected with the 3rd general input/output terminal (I/O) of described processing unit, and the common port of described geocoding control unit is the differential transfer end of described automatic addressing circuit;
According to described changeover control signal, differential sense signal is converted to the first converting unit of TTL detection signal, the differential input end of described first converting unit is connected with two normally closed outputs of described geocoding control unit, the output of described first converting unit is connected with the signal receiving end (RXD) of described processing unit, and the control end of described first converting unit is connected with the first universal input output (H/L) of described processing unit;
According to described changeover control signal, TTL drive control signal is converted to the second converting unit of differential driving control signal, the input of described second converting unit is connected with the signal sending end (TXD) of described processing unit, the difference output end of described second converting unit is often opened input with two of described geocoding control unit and is connected, described differential driving control signal is received according to switch-over control signal to make described geocoding control unit, multiple LED lamp is made to be series in described bus, the control end of described second converting unit is connected with the second universal input output (H/L) of described processing unit.
2. automatic addressing circuit as claimed in claim 1, it is characterized in that, described first converting unit is a RS485 communication module, two data terminals of a described RS485 communication module are the differential input end of described first converting unit, the output of a described RS485 communication module is the output of described first converting unit, and the reset terminal of a described RS485 communication module is the control end of described first converting unit;
Described second converting unit is the 2nd RS485 communication module, the input of described 2nd RS485 communication module is the input of described second converting unit, two data terminals of described 2nd RS485 communication module are the difference output end of described second converting unit, and the reset terminal of a described RS485 communication module is the control end of described first converting unit.
3. automatic addressing circuit as claimed in claim 2, it is characterized in that, described first converting unit also comprises:
Two-way TVS voltage-stabiliser tube Z1, two-way TVS voltage-stabiliser tube Z2, resistance R1, resistance R2, resistance R4, resistance R5;
One of two data terminals of a described RS485 communication module are connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z1, one end of described resistance R1 and described resistance R2 respectively, second end of described two-way TVS voltage-stabiliser tube Z1 and the other end of described resistance R1 ground connection simultaneously, the other end of described resistance R2 is a differential input end of described first converting unit;
Another of two data terminals of a described RS485 communication module is connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z2, one end of described resistance R5 and described resistance R4 respectively, second end of described two-way TVS voltage-stabiliser tube Z2 and the other end of described resistance R5 ground connection simultaneously, the other end of described resistance R4 is another differential input end of described first converting unit;
Described second converting unit also comprises:
Two-way TVS voltage-stabiliser tube Z3, two-way TVS voltage-stabiliser tube Z4, resistance R6, resistance R8, resistance R9, resistance R11;
One of two data terminals of described 2nd RS485 communication module are connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z4, one end of described resistance R6 and described resistance R8 respectively, second end of described two-way TVS voltage-stabiliser tube Z4 and the other end of described resistance R6 ground connection simultaneously, the other end of described resistance R8 is a differential input end of described first converting unit;
Another of two data terminals of described 2nd RS485 communication module is connected with one end of the described first end of two-way TVS voltage-stabiliser tube Z5, one end of described resistance R11 and described resistance R9 respectively, second end of described two-way TVS voltage-stabiliser tube Z5 and the other end of described resistance R11 ground connection simultaneously, the other end of described resistance R9 is another differential input end of described first converting unit.
4. automatic addressing circuit as claimed in claim 2 or claim 3, it is characterized in that, a described RS485 communication module comprises:
Electric capacity C1, resistance R3 and MAX1487 type communication chip (U1);
The power end of described MAX1487 type communication chip (U1) connects supply voltage, and by described electric capacity C1 ground connection, the reset terminal of described MAX1487 type communication chip (U1) and transmitting-receiving control end (DE) are that the control end of a described RS485 communication module is by described resistance R3 ground connection simultaneously, the output of described MAX1487 type communication chip (U1) is a described RS485 communication module output, and two data terminals of described MAX1487 type communication chip (U1) are described RS485 communication module two data terminal;
Described 2nd RS485 communication module comprises:
Electric capacity C2 and MAX1487 type communication chip (U2);
The power end of described MAX1487 type communication chip (U2) connects supply voltage, and by described electric capacity C2 ground connection, the reset terminal of described MAX1487 type communication chip (U2) and transmitting-receiving control end (DE) are the control end of described 2nd RS485 communication module simultaneously, the input (DI) of described MAX1487 type communication chip (U2) is described 2nd RS485 communication module input, and two data terminals of described MAX1487 type communication chip (U2) are described 2nd RS485 communication module two data terminal.
5. automatic addressing circuit as claimed in claim 1, it is characterized in that, described geocoding control unit comprises:
Resistance R7, resistance R10, diode D1, the first switching tube Q1 and two-way relay;
One end of described resistance R7 is the control end of described geocoding control unit, the other end of described resistance R7 is connected with one end of described resistance R10 and the control end of described first switching tube simultaneously, the other end of described resistance R10 and the output of described first switching tube ground connection simultaneously, the input of described first switching tube is connected with the anode of described diode D1, the negative electrode of described diode D1 is the power end connection supply voltage of described geocoding control unit, the anode of described diode D1 is also connected with the coil two ends of described two-way relay with negative electrode, two normal-closed ends of described two-way relay are two normally closed outputs of described geocoding control unit, two Chang Kaiduan of described two-way relay be described geocoding control unit often open input, two common ports of described two-way relay are the common port of described geocoding control unit.
6. automatic addressing circuit as claimed in claim 5, it is characterized in that, described first switching tube is NPN type triode;
The input of very described first switching tube of current collection of described NPN type triode, the base stage of described NPN type triode is the control end of described first switching tube, the output of very described first switching tube of transmitting of described NPN type triode.
7. automatic addressing circuit as claimed in claim 1, it is characterized in that, described automatic addressing circuit also comprises:
Be convenient to the output port (POUT) of grafting, described output port is connected with the differential transfer end of described automatic addressing circuit.
8. automatic addressing circuit as claimed in claim 1, it is characterized in that, described automatic addressing circuit also comprises:
DC D.C. regulated power supply, for providing stable supply voltage, the output of described DC D.C. regulated power supply is connected with the power end of described processing unit, described first converting unit, described second converting unit, described geocoding control unit respectively.
9. based on a LED lamp for DMX512 agreement, it is characterized in that, described LED lamp comprises the LED automatic addressing circuit based on DMX512 agreement as described in any one of claim 1 to 8 and LED.
10. the LED illumination control system based on DMX512 agreement, it is characterized in that, the main controller that described LED illumination control system comprises host computer, is connected with described host computer, the iversion controller that multiple and described main controller is connected and the LED lamp based on DMX512 agreement as claimed in claim 9.
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| CN201420752188.0U CN204291487U (en) | 2014-12-03 | 2014-12-03 | Based on the LED automatic addressing circuit of DMX512, light fixture and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554172A (en) * | 2015-12-18 | 2016-05-04 | 成都智尚极光科技有限公司 | Sub-controller addressing method for use in landscape lamp system, sub-controller, main control equipment addressing control method and main control equipment |
| CN109041349A (en) * | 2018-09-03 | 2018-12-18 | 深圳市汇德科技有限公司 | It is a kind of that address device and system are write based on LED decoding circuit automatically |
| CN110708793A (en) * | 2019-09-26 | 2020-01-17 | 深圳市明微电子股份有限公司 | Cascade control method of cascade equipment, cascade equipment and illumination system |
| CN111954340A (en) * | 2020-08-10 | 2020-11-17 | 深圳市汇德科技有限公司 | DMX512 signal amplifier and LED control system |
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2014
- 2014-12-03 CN CN201420752188.0U patent/CN204291487U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554172A (en) * | 2015-12-18 | 2016-05-04 | 成都智尚极光科技有限公司 | Sub-controller addressing method for use in landscape lamp system, sub-controller, main control equipment addressing control method and main control equipment |
| CN105554172B (en) * | 2015-12-18 | 2018-09-18 | 成都智尚极光科技有限公司 | Iversion controller addressing method, iversion controller, main control device addressing control method and main control device in landscape lamp system |
| CN109041349A (en) * | 2018-09-03 | 2018-12-18 | 深圳市汇德科技有限公司 | It is a kind of that address device and system are write based on LED decoding circuit automatically |
| CN110708793A (en) * | 2019-09-26 | 2020-01-17 | 深圳市明微电子股份有限公司 | Cascade control method of cascade equipment, cascade equipment and illumination system |
| CN111954340A (en) * | 2020-08-10 | 2020-11-17 | 深圳市汇德科技有限公司 | DMX512 signal amplifier and LED control system |
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