CN218162936U - Four-channel constant-pressure decoder - Google Patents
Four-channel constant-pressure decoder Download PDFInfo
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- CN218162936U CN218162936U CN202221825995.1U CN202221825995U CN218162936U CN 218162936 U CN218162936 U CN 218162936U CN 202221825995 U CN202221825995 U CN 202221825995U CN 218162936 U CN218162936 U CN 218162936U
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Abstract
The utility model relates to a four-channel constant voltage decoder belongs to decoder technical field. The system comprises a power supply filtering voltage stabilizing circuit, a lightning and static prevention circuit, a signal level conversion circuit, a dial switch setting circuit, a new Tang 8-bit microcontroller control circuit, a four-channel high-power drive circuit and a state indicating circuit. The power supply filter circuit provides a stable and clean 5V power supply, the microcontroller control circuit is electrified and then shows the running state through the flashing of the indicator lamp, the microcontroller outputs different color changes according to the dial switch setting circuit to realize the self-testing running mode, once receiving the DMX512 signal, the microcontroller exits the self-testing running mode, outputs the four-channel high-power drive circuit formed by the high-power field effect tubes through the internal hardware PWM and outputs and drives the high-power LED lamp. Due to the adoption of the special differential signal lightning protection device and circuit, the product can be protected from being damaged by static electricity and lightning, and the lightning protection circuit is high in response speed, stable and reliable.
Description
Technical Field
The utility model relates to a four-channel constant voltage decoder belongs to decoder technical field.
Background
The PX403 four-channel constant voltage decoder is a constant voltage type output driven DMX512 decoder, which performs remote digital signal control according to the DMX512 communication protocol of stage lighting control in accordance with the international standard. The DMX512 communication protocol is a standard for dimming and light console data transmission, and is a common control protocol in the field of entertainment lighting. The former 0-10V analog control is more, and the DMX512 is the most main control protocol in the entertainment light industry. Its performance is far superior to that of analog signal product, and it is a new generation product with strong advantages.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a four-channel constant voltage decoder, it sets for decoder address parameter through dial switch, increases excessive pressure overcurrent protection at DMX512 signal receiving terminal for communication circuit does not receive outside static or high pressure to damage decoder inner circuit, and simultaneously, the constant voltage output of four-channel is fit for RGBW's LED lamps and lanterns more, and the colour gamut enlarges more, and suitability and practicality are more bold, are the DMX512 decoder constant voltage drive product that the price/performance ratio is high very much.
The utility model provides a four-channel constant voltage decoder, which comprises a power supply filtering and voltage stabilizing circuit, a lightning protection and anti-static circuit, a signal level conversion circuit, a dial switch setting circuit, a new Tang 8-bit microcontroller control circuit, a four-channel high-power drive circuit and a state indicating circuit;
the 12-24V direct-current voltage input by the power supply filtering and voltage stabilizing circuit enters a linear voltage stabilizing chip U3 after being subjected to voltage division and current limitation by an anti-reverse diode D1 and three resistors, and is filtered by an output capacitor, so that stable and clean 5V voltage is provided for a microcontroller, and input voltage with enough power is provided for a driving circuit;
the DMX512 signal remotely sent by the lightning protection and anti-static circuit can induce over-high voltage, and internal components can be prevented from being damaged after the circuit is protected;
the signal level conversion circuit DMX512 signal is a differential signal with strong anti-interference capability and needs to be converted into a TTL signal identified by the microcontroller;
the dial switch setting circuit can set the address 0-511 by the high and low level of 1-9 bits to be input into the microcontroller through the on-off of the 10-bit dial switch, and the 10 th bit switch is used for switching on the DMX512 terminal matching resistor R11;
the new Tang 8-bit microcontroller control circuit carries out programmed decoding on the received DMX signal by the imported new Tang 8-bit microcontroller, compares the received DMX signal with an address code set by a dial switch, outputs a four-channel PWM driving signal of the address through four internal PWM hardware, and simultaneously outputs an indication working state;
the four-channel high-power driving circuit outputs a 5V PWM dimming signal through a high-power field effect transistor to drive a high-power constant-voltage LED lamp;
the state indicating circuit distinguishes the working state of the microcontroller through the flashing speed of the indicating lamp, when the DMX512 signal is not received, the indicating lamp flashes for 0.5 second, manual testing can be carried out, once the DMX512 signal is input, the indicating lamp flashes for 0.2 second quickly, manual testing is automatically quitted, and the DMX512 dimming state is entered.
The 12-24V direct-current voltage input by the power supply filtering and voltage stabilizing circuit enters a linear voltage stabilizing chip U3 after being subjected to voltage division and current limitation by an anti-reverse diode D1 and three resistors, and is filtered by an output capacitor to provide stable and clean 5V voltage for the microcontroller.
The DMX512 signal input by the lightning protection and anti-static circuit is limited by the self-reset fuse wire and then limited by the bidirectional lightning protection and anti-static anti-detonator, and then enters the next stage circuit.
The differential signal level of the protected signal of the signal level conversion circuit is converted into TTL signal level suitable for the microcontroller by a special import chip.
The dial switch setting circuit can set the high and low levels of 1-9 bits to be the addresses 0-511 to be input into the microcontroller through the on-off of the 10-bit dial switch. The 10 th bit switch turns on the DMX512 terminal matching resistor R11.
The four-channel high-power driving circuit converts, amplifies and outputs the 5V PWM dimming signal through four high-power field effect tubes to drive a high-power constant-voltage LED lamp.
Advantageous effects
The utility model provides a four-channel constant voltage decoder, it sets for decoder address parameter through the dial switch, increases excessive pressure overcurrent protection at DMX512 signal receiving terminal for communication circuit does not receive outside static or high pressure to damage decoder internal circuit, and simultaneously, the constant voltage output of four-channel is fit for RGBW's LED lamps and lanterns more, and the colour gamut enlarges more, and the suitability is more bold and more lively, is the DMX512 decoder constant voltage drive product that the price/performance ratio is high very much.
Drawings
Fig. 1 is a schematic block diagram of a four-channel constant voltage decoder according to the present invention.
Fig. 2 is a schematic circuit diagram of a four-channel constant voltage decoder according to the present invention.
Fig. 3 is a schematic circuit diagram of the power supply filtering and voltage stabilizing circuit of the four-channel constant voltage decoder of the present invention.
Fig. 4 is a schematic circuit diagram of a lightning protection and anti-static circuit of a four-channel constant voltage decoder of the present invention.
Fig. 5 is a schematic circuit diagram of a signal level conversion circuit of a four-channel constant voltage decoder according to the present invention.
Fig. 6 is a schematic circuit diagram of a four-channel constant voltage decoder dial switch setting circuit according to the present invention.
Fig. 7 is a schematic circuit diagram of a control circuit of a new tang 8-bit microcontroller of a four-channel constant-voltage decoder according to the present invention.
Fig. 8 is a schematic circuit diagram of a four-channel high-power driving circuit of a four-channel constant voltage decoder according to the present invention.
Fig. 9 is a schematic circuit diagram of a state indicating circuit of a four-channel constant voltage decoder according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below.
The utility model provides a four-channel constant voltage decoder, which comprises a power supply filtering voltage stabilizing circuit, a lightning protection anti-static circuit, a signal level conversion circuit, a dial switch setting circuit, a new Tang 8-bit microcontroller control circuit, a four-channel high-power drive circuit and a state indicating circuit;
in the utility model, the 12-24V DC voltage input by the power supply filtering and voltage stabilizing circuit enters the linear voltage stabilizing chip U3 after the reverse connection prevention diode D1 and the three resistors divide the voltage and limit the current, the output capacitor filters, provides stable and clean 5V voltage for the microcontroller and provides input voltage with enough power for the driving circuit;
the DMX512 signal remotely sent by the lightning protection and anti-static circuit has over-high induced voltage, and internal components can be prevented from being damaged after the circuit is protected;
the signal level conversion circuit DMX512 signal is a differential signal with strong anti-interference capability and needs to be converted into a TTL signal identified by the microcontroller;
the dial switch setting circuit can set the address 0-511 by the high and low level of 1-9 bits to be input into the microcontroller through the on-off of the 10-bit dial switch, and the 10 th bit switch is used for switching on the DMX512 terminal matching resistor R11;
the four-channel high-power driving circuit outputs a 5V PWM dimming signal through a high-power field effect transistor to drive a high-power constant-voltage LED lamp;
as shown in FIG. 3, the utility model discloses well power filter voltage stabilizing circuit, the 12-24V direct current voltage of input are through preventing that the reverse diode D1 and three resistance divide voltage and flow limit back get into linear voltage stabilizing chip U3, and output capacitance filters provides stable clean 5V voltage for the microcontroller.
As shown in FIG. 4, the anti-thunder and anti-static circuit of the present invention inputs DMX512 signal and then enters the next stage circuit after the current limiting from the self-reset fuse and the voltage limiting of the two-way anti-thunder and anti-static anti-detonator.
As shown in fig. 5, the signal level conversion circuit of the present invention converts the differential signal level into the TTL signal level adapted to the microcontroller by the special chip after protection.
As shown in fig. 6, the setting circuit of the middle dial switch of the present invention, through the on/off of the 10-bit dial switch, the high/low level of 1-9 bits can be set to address 0-511 to be inputted into the micro controller, and the 10 th bit switch is to switch on the DMX512 terminal matching resistor R11.
As shown in fig. 7, the utility model discloses well new tang 8 bit microcontroller control circuit carries out programmed decoding with received DMX signal by the new tang 8 bit microcontroller of import, compares according to the address code with dial switch settlement, through four inside PWM hardware output this address's four-channel PWM drive signal, exports simultaneously and instructs operating condition.
As shown in fig. 8, the utility model discloses well four-channel high-power drive circuit amplifies the output through four high-power field effect transistors with 5V's PWM dimming signal conversion, drives powerful constant voltage LED lamp.
As shown in fig. 9, the state indicating circuit of the present invention distinguishes the operating state of the microcontroller according to the flashing speed of the indicator light. When the DMX512 signal is not received, the indicator light flickers for 0.5 second, manual testing can be performed, once the DMX512 signal is input, the indicator light flickers for 0.2 second quickly, manual testing is automatically quitted, and the DMX512 dimming state is entered.
When a product is powered on by 12-24V direct current, the power supply filter circuit firstly performs voltage stabilizing filtering to provide a stable and clean 5V power supply for the microcontroller, after the microcontroller control circuit is powered on, a program starts to run, the running state is indicated by flashing of the indicator light, if a DMX512 signal is not received, the microcontroller outputs different color and color changes according to the dial switch setting circuit, the self-test running mode is realized, and the indicator light of the indicator circuit flashes slowly for 0.5 second. The remote DMX512 signal is processed by the lightning protection and anti-static circuit and then enters the microcontroller through the signal level conversion circuit, the microcontroller exits the self-test operation mode once receiving the DMX512 signal, the indicator lamp of the indicating circuit is controlled to flash quickly for 0.2 second, the brightness values of four channels of the address are decoded according to the address set by the dial switch, and the brightness values are output to a four-channel high-power driving circuit formed by high-power field effect tubes through internal hardware PWM to output and drive high-power LED lamps. Due to the adoption of special differential signal lightning protection devices and circuits, products can be protected from being damaged by static electricity and lightning. In addition, the 256-level PWM dimming drive of the hardware PWM output can be well matched with the 256-level dimming of the DMX512 signal, and the device has high response speed, and is very stable and reliable.
The present invention and its embodiments have been described above, but the description is not limited thereto, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (6)
1. A four-channel constant voltage decoder, comprising: the system comprises a power supply filtering voltage stabilizing circuit, a lightning protection and anti-static circuit, a signal level conversion circuit, a dial switch setting circuit, a new Tang 8-bit microcontroller control circuit, a four-channel high-power drive circuit and a state indicating circuit; the power supply filtering and voltage stabilizing circuit comprises a diode D1, a resistor and a linear voltage stabilizing chip U3, the lightning protection and anti-static circuit comprises a self-resetting fuse and an anti-explosion lamp, the dial switch setting circuit comprises the on-off of a 10-bit dial switch, 1-9 bit high and low level settable addresses 0-511 are input into a microcontroller, the 10 th switch is a matched resistor R11 for connecting a DMX512 terminal, the new Tang 8-bit microcontroller control circuit comprises a new Tang 8-bit microcontroller, and the four-channel high-power driving circuit comprises a high-power field effect transistor and a constant-voltage LED lamp.
2. The four-channel constant voltage decoder as claimed in claim 1, wherein: the power supply filtering and voltage stabilizing circuit comprises three resistors, and the diode D1, the resistors and the linear voltage stabilizing chip U3 are sequentially connected to provide stable and clean 5V voltage for the microcontroller.
3. The four-channel constant voltage decoder as claimed in claim 1, wherein: the anti-explosion cap is a bidirectional lightning-protection anti-static anti-explosion cap, and the self-reset fuse is sequentially connected with the anti-explosion cap.
4. The four-channel constant voltage decoder of claim 1, wherein: the new Tang 8-bit microcontroller outputs a four-channel PWM driving signal of the address through four internal PWM hardware and outputs an indication working state at the same time.
5. The four-channel constant voltage decoder as claimed in claim 1, wherein: four high-power field effect tubes are arranged in the four-channel high-power driving circuit, and 5V PWM dimming signals of the four high-power field effect tubes are converted, amplified and output to drive a high-power constant-voltage LED lamp.
6. The four-channel constant voltage decoder as claimed in claim 1, wherein: the state indicating circuit distinguishes the working state of the microcontroller through the flashing speed of the indicating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221825995.1U CN218162936U (en) | 2022-07-14 | 2022-07-14 | Four-channel constant-pressure decoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221825995.1U CN218162936U (en) | 2022-07-14 | 2022-07-14 | Four-channel constant-pressure decoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218162936U true CN218162936U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221825995.1U Active CN218162936U (en) | 2022-07-14 | 2022-07-14 | Four-channel constant-pressure decoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218162936U (en) |
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2022
- 2022-07-14 CN CN202221825995.1U patent/CN218162936U/en active Active
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