CN215581812U - Stage lighting DMX512 converter - Google Patents
Stage lighting DMX512 converter Download PDFInfo
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- CN215581812U CN215581812U CN202121521605.7U CN202121521605U CN215581812U CN 215581812 U CN215581812 U CN 215581812U CN 202121521605 U CN202121521605 U CN 202121521605U CN 215581812 U CN215581812 U CN 215581812U
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Abstract
The utility model aims at the application scenes of the software of the prior digital analog sound environment to be greatly increased, but the old sound equipment still adopts DMX512 protocol and needs a converter for converting DMX512 by using LAN. Aiming at the problems that the existing converter is easily influenced by power line carrier waves and power grid fluctuation in a power grid, and sound equipment is easily damaged or sound signals are easily influenced, the stage lighting DMX512 converter is designed. Stage lighting DMX512 converter, comprising: the device comprises a shell, an RS485 port, an RS485 coordination chip, an analysis chip, a power circuit and an LAN module.
Description
Technical Field
The utility model relates to the field of stage sound equipment, in particular to a stage lighting DMX512 converter.
Background
With the development of science and technology, the control of stage elements such as lamplight, sound, video, machinery, scenes and the like is not limited to manual control, and the central control system of the stage enables the control of the stage elements to be more accurate, so that more complex stage effects can be perfectly presented. At present, the stage light fixtures are controlled by adopting a DM512 protocol, and the DM512 protocol is first developed by USITT (american theater technology association) into a mode of controlling the light modulator by using a standard digital interface from a console. DMX512 surpasses analog systems, but cannot completely replace analog systems; just as its name suggests, the protocol includes 512 data in one packet, each of which is a binary signal of 0-255 and is less complex, including address information, which results in a concomitant reduction in vendor interoperability costs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the application scenes of the software of the prior digital analog sound environment to be greatly increased, but the old sound equipment still adopts DMX512 protocol and needs a converter for converting DMX512 by using LAN. Aiming at the problems that the existing converter is easily influenced by power line carrier waves and power grid fluctuation in a power grid, and sound equipment is easily damaged or sound signals are easily influenced, the stage lighting DMX512 converter is designed.
Stage lighting DMX512 converter, comprising: the device comprises a shell, an RS485 port, an RS485 coordination chip, an analysis chip, a power circuit and an LAN module;
the power supply circuit comprises: an EMI filter circuit and a surge voltage relief circuit;
the EMI filter circuit is used for filtering out circuit carrier waves and interference noise in an external power supply circuit while reducing voltage, the input end of the EMI filter circuit is electrically connected with the external power supply circuit, and the output end of the EMI filter circuit is electrically connected with the surge voltage-relief circuit;
and the surge voltage relief circuit is used for isolating the surge condition of an external power supply circuit, the input end of the surge voltage relief circuit is connected with the EMI filter circuit, and the output end of the surge voltage relief circuit supplies power for the analysis chip.
Like the conventional DMX512 converter, the DMX512 converter of the application also receives an operation signal of a computer through an LAN port, converts the signal into a corresponding analog signal through an analysis chip, converts the analog signal into the DMX512 signal through an RS485 coordination chip, and finally transmits the DMX512 signal to sound equipment through an RS485 port.
In the existing sound environment, the circuit carrier wave can convert signals of the sound RS485 coordination chip, and the analysis chip, namely the STM32 signal is directly connected with the RS485 coordination chip to cause signal fluctuation. Therefore, the power supply circuit filters the interference signal of external power supply while reducing voltage, and reduces the influence of external circuit carrier on the device; thereby promote the signal conversion rate of accuracy of RS485 coordination chip in this application.
Preferably, the EMI filter circuit includes:
a first end of the slow-breaking fuse FT is electrically connected with a live wire of an input end, and a second end of the slow-breaking fuse FT is electrically connected with a first end of a capacitor C1 and a first end of a common-mode inductor T1;
a second end of the capacitor C1 is electrically connected with the zero line of the input end and a third end of the common-mode inductor T1;
a second end of the common mode inductor T1 is electrically connected to a first end of the capacitor C2 and a first end of the inductor L1, and a fourth end is electrically connected to a second end of the capacitor C2 and a first end of the capacitor C4;
a first end of the capacitor C3 is electrically connected with a second end of the inductor L1, and a second end of the capacitor C4 is electrically connected with the second end of the capacitor C4 and the shell ground;
the first terminal of the capacitor C3 and the first terminal of the capacitor C4 form an AC output terminal.
Preferably, the surge voltage relief circuit includes:
a full-bridge rectifier, a first end of which is electrically connected with a first end of a capacitor C4, a third end of which is electrically connected with a first end of a capacitor C3, a second end of which is electrically connected with a first end of a resistor R1, a negative electrode of a switching tube SCR, a positive electrode of a polar capacitor C5, a first end of a capacitor C6 and an S electrode of a Mos tube Q1, and a fourth end of which is electrically connected with a first end of a capacitor C7;
the second end of the resistor R1 is grounded;
the positive electrode of the switching tube SCR is grounded, and the controlled electrode is electrically connected with the negative electrode of the polar capacitor C5, the second end of the capacitor C6 and the D electrode of the mos tube Q1 at the first end of the resistor R2;
the second end of the resistor R2 is grounded;
the G stage of the Mos tube Q1 is electrically connected with the anode of the diode D5;
the cathode of the diode D5 is electrically connected with the first end of the resistor R3;
the second end of the resistor R3 is grounded;
the second end of the capacitor C7 is grounded;
the two ends of the capacitor C7 are direct current outputs.
Preferably, the analysis chip adopts an STM32F107ZET6 chip, and the LAN module adopts a LAN8720 chip.
Preferably, the RS485 coordination chip uses an SP3485 chip.
The utility model has the beneficial effects that: by filtering the external power supply, the signal conversion accuracy of the RS485 coordination chip is improved; the safety of power supply inside the equipment is ensured through the surge voltage relief circuit.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram of a power supply circuit of the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings.
Example 1
As shown in fig. 1 and 2, the stage lighting DMX512 converter includes: the device comprises a shell, an RS485 port, an RS485 coordination chip, an analysis chip, a power circuit and an LAN module;
the power supply circuit comprises: an EMI filter circuit and a surge voltage relief circuit;
the EMI filter circuit is used for filtering out circuit carrier waves and interference noise in an external power supply circuit while reducing voltage, the input end of the EMI filter circuit is electrically connected with the external power supply circuit, and the output end of the EMI filter circuit is electrically connected with the surge voltage-relief circuit;
and the surge voltage relief circuit is used for isolating the surge condition of an external power supply circuit, the input end of the surge voltage relief circuit is connected with the EMI filter circuit, and the output end of the surge voltage relief circuit supplies power for the analysis chip.
Like the conventional DMX512 converter, the DMX512 converter of the application also receives an operation signal of a computer through an LAN port, converts the signal into a corresponding analog signal through an analysis chip, converts the analog signal into the DMX512 signal through an RS485 coordination chip, and finally transmits the DMX512 signal to sound equipment through an RS485 port.
In the existing sound environment, the circuit carrier wave can convert signals of the sound RS485 coordination chip, and the analysis chip, namely the STM32 signal is directly connected with the RS485 coordination chip to cause signal fluctuation. Therefore, the power supply circuit filters the interference signal of external power supply while reducing voltage, and reduces the influence of external circuit carrier on the device; thereby promote the signal conversion rate of accuracy of RS485 coordination chip in this application.
The EMI filter circuit comprises:
a first end of the slow-breaking fuse FT is electrically connected with a live wire of an input end, and a second end of the slow-breaking fuse FT is electrically connected with a first end of a capacitor C1 and a first end of a common-mode inductor T1;
a second end of the capacitor C1 is electrically connected with the zero line of the input end and a third end of the common-mode inductor T1;
a second end of the common mode inductor T1 is electrically connected to a first end of the capacitor C2 and a first end of the inductor L1, and a fourth end is electrically connected to a second end of the capacitor C2 and a first end of the capacitor C4;
a first end of the capacitor C3 is electrically connected with a second end of the inductor L1, and a second end of the capacitor C4 is electrically connected with the second end of the capacitor C4 and the shell ground;
the first terminal of the capacitor C3 and the first terminal of the capacitor C4 form an AC output terminal.
The surge voltage relief circuit comprises:
a full-bridge rectifier, a first end of which is electrically connected with a first end of a capacitor C4, a third end of which is electrically connected with a first end of a capacitor C3, a second end of which is electrically connected with a first end of a resistor R1, a negative electrode of a switching tube SCR, a positive electrode of a polar capacitor C5, a first end of a capacitor C6 and an S electrode of a Mos tube Q1, and a fourth end of which is electrically connected with a first end of a capacitor C7;
the second end of the resistor R1 is grounded;
the positive electrode of the switching tube SCR is grounded, and the controlled electrode is electrically connected with the negative electrode of the polar capacitor C5, the second end of the capacitor C6 and the D electrode of the mos tube Q1 at the first end of the resistor R2;
the second end of the resistor R2 is grounded;
the G stage of the Mos tube Q1 is electrically connected with the anode of the diode D5;
the cathode of the diode D5 is electrically connected with the first end of the resistor R3;
the second end of the resistor R3 is grounded;
the second end of the capacitor C7 is grounded;
the two ends of the capacitor C7 are direct current outputs.
The analysis chip adopts STM32F107ZET6 chip, and the LAN8720 chip is adopted by the LAN module.
The RS485 coordination chip uses an SP3485 chip.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. Stage lighting DMX512 converter, comprising: casing, RS485 port, RS485 coordinate chip, analysis chip, power supply circuit and LAN module, its characterized in that, power supply circuit include: an EMI filter circuit and a surge voltage relief circuit;
the EMI filter circuit is used for filtering out circuit carrier waves and interference noise in an external power supply circuit while reducing voltage, the input end of the EMI filter circuit is electrically connected with the external power supply circuit, and the output end of the EMI filter circuit is electrically connected with the surge voltage-relief circuit;
and the surge voltage relief circuit is used for isolating the surge condition of an external power supply circuit, the input end of the surge voltage relief circuit is connected with the EMI filter circuit, and the output end of the surge voltage relief circuit supplies power for the analysis chip.
2. The stage lighting DMX512 converter as claimed in claim 1, wherein the EMI filter circuit comprises:
a first end of the slow-breaking fuse FT is electrically connected with a live wire of an input end, and a second end of the slow-breaking fuse FT is electrically connected with a first end of a capacitor C1 and a first end of a common-mode inductor T1;
a second end of the capacitor C1 is electrically connected with the zero line of the input end and a third end of the common-mode inductor T1;
a second end of the common mode inductor T1 is electrically connected to a first end of the capacitor C2 and a first end of the inductor L1, and a fourth end is electrically connected to a second end of the capacitor C2 and a first end of the capacitor C4;
a first end of the capacitor C3 is electrically connected with a second end of the inductor L1, and a second end of the capacitor C4 is electrically connected with the second end of the capacitor C4 and the shell ground;
the first terminal of the capacitor C3 and the first terminal of the capacitor C4 form an AC output terminal.
3. The stage lighting DMX512 converter as claimed in claim 1 or 2, wherein the surge relief circuit comprises:
a full-bridge rectifier, a first end of which is electrically connected with a first end of a capacitor C4, a third end of which is electrically connected with a first end of a capacitor C3, a second end of which is electrically connected with a first end of a resistor R1, a negative electrode of a switching tube SCR, a positive electrode of a polar capacitor C5, a first end of a capacitor C6 and an S electrode of a Mos tube Q1, and a fourth end of which is electrically connected with a first end of a capacitor C7;
the second end of the resistor R1 is grounded;
the positive electrode of the switching tube SCR is grounded, and the controlled electrode is electrically connected with the negative electrode of the polar capacitor C5, the second end of the capacitor C6 and the D electrode of the mos tube Q1 at the first end of the resistor R2;
the second end of the resistor R2 is grounded;
the G stage of the Mos tube Q1 is electrically connected with the anode of the diode D5;
the cathode of the diode D5 is electrically connected with the first end of the resistor R3;
the second end of the resistor R3 is grounded;
the second end of the capacitor C7 is grounded;
the two ends of the capacitor C7 are direct current outputs.
4. The stage lighting DMX512 converter as claimed in claim 1, wherein the parsing chip is STM32F107ZET6 chip, and the LAN module is LAN8720 chip.
5. The stage lighting DMX512 converter as claimed in claim 1, wherein the RS485 coordination chip uses SP3485 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121521605.7U CN215581812U (en) | 2021-07-06 | 2021-07-06 | Stage lighting DMX512 converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121521605.7U CN215581812U (en) | 2021-07-06 | 2021-07-06 | Stage lighting DMX512 converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215581812U true CN215581812U (en) | 2022-01-18 |
Family
ID=79823617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121521605.7U Active CN215581812U (en) | 2021-07-06 | 2021-07-06 | Stage lighting DMX512 converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215581812U (en) |
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2021
- 2021-07-06 CN CN202121521605.7U patent/CN215581812U/en active Active
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