CN219107469U - Network changes DMX512 output converter - Google Patents

Abstract

The utility model discloses a network-to-DMX 512 output converter, which comprises an Ethernet switch module, an Ethernet control module, an ARM processing module, a peripheral module and a plurality of DMX512 signal output modules, wherein the output end of the Ethernet switch module is connected with the input end of the Ethernet control module, the output end of the Ethernet control module is connected with the input end of the ARM processing module, and the input end of the peripheral module and the input end of the DMX512 signal output module are both connected with the output end of the ARM processing module. According to the utility model, an ArtNet signal is obtained through an Ethernet switch module, a differential signal is transmitted to an Ethernet control module, the Ethernet control module is communicated with an ARM processing module, the ARM processing module is communicated and set through an external module, and the ARM processing module is driven to communicate and independently output data through a plurality of DMX512 signal output modules.

Description

Network changes DMX512 output converter

Technical Field

The utility model relates to the technical field of network signal conversion, in particular to a network-to-DMX 512 output converter.

Background

With the development of network technology and the light industry, some manufacturers of light control equipment have recognized the importance of the produced equipment and international standard connection, in which the system developed based on the Artnet protocol is already in wide use, and the technical development of the light industry is mainly oriented to multi-channel digital transmission, namely Digital MultipleX, abbreviated as DMX. The DMX512 control protocol is an industry standard for data transmission between a lighting controller and a lighting device, including electrical characteristics, data protocols, data formats, etc., published by the united states stage lighting association (usITT) in 1990, and Artnet is a protocol standard that uses 10 mega ethernet based on the TCP IP protocol, so how to use the widely used standard ethernet technology to transmit a large amount of DMX512 data to meet the current most urgent and most common application requirements.

Disclosure of Invention

In order to overcome the shortcomings of the prior art, the present utility model is directed to a network to DMX512 output converter, which can solve the problem of how to use standard ethernet technology to transmit a large amount of DMX512 data.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a network changes DMX512 output converter, includes ethernet switch module, ethernet control module, ARM processing module, peripheral hardware module and a plurality of DMX512 signal output module, the output of ethernet switch module is connected with the input of ethernet control module, the output of ethernet control module is connected with the input of ARM processing module, the input of peripheral hardware module and the input of DMX512 signal output module are all connected with the output of ARM processing module.

Preferably, the Ethernet switch module comprises at least one filter circuit and a switching circuit, the filter circuit comprises a network interface J5, a network transformer U9, a resistor R10, a resistor R72, a resistor R88, a resistor PR5, a capacitor C1, a capacitor C78, a capacitor C86 and a capacitor C96, the switching circuit comprises an Ethernet switch chip U14, the first pin TX+, the second pin TX-, the third pin RX+ and the sixth pin RX-of the network interface J5 are respectively connected with a sixteenth pin TX+, a fourteenth pin TX-, an eleventh pin RX+ and a ninth pin RX-of the network transformer U9, the fifteenth pin TXC of the network transformer U9 is connected with a fifth pin of the resistor PR5, the fourth pin NC and the fifth pin NC of the network transformer U9 are respectively connected with a eighth pin of the resistor PR5, the seventh pin J5 is connected with a seventh pin RD and a seventh pin of the resistor PR5, the network transformer U is connected with one end of the network transformer U9, the resistor U is connected with one end of the resistor U9, the resistor R6 is connected with the resistor C6, the resistor R6 is connected with one end of the resistor U9, the resistor R6 is connected with the resistor R7, the resistor R6 is connected with the resistor R9, the eighth pin RD-of the network transformer U9 is connected with one end of a resistor R88, the other end of a resistor R10 and the other end of the resistor R9 are connected with one end of a capacitor C1, the other end of a resistor R72 and the other end of the resistor R88 are connected with one end of a capacitor C78, and the other end of the capacitor C1, the other end of the capacitor C78 and the other end of a capacitor C96 are grounded.

Preferably, the ethernet control module includes an ethernet chip U12 and a network transformer U13, an output end of the ethernet switch chip U14 is connected to an input end of the ethernet chip U12 through the network transformer U13, and an output end of the ethernet chip U12 is connected to an input end of the ARM processing module.

Preferably, the ARM processing module comprises a single-chip microcomputer U18, and the output end of the Ethernet chip U12, the input end of the peripheral module and the input end of the DMX512 signal output module are all connected with the input end of the single-chip microcomputer U18.

Preferably, the DMX512 signal output module includes a differential bus transceiver U1, where the differential bus transceiver U1 is connected to an input end of the single-chip microcomputer U18.

Preferably, the peripheral module comprises an LCD display screen, a combined key, a chip U16 and a chip U19, wherein the LCD display screen is connected with the singlechip U18 through the chip U16, and the combined key is connected with the singlechip U18 through the chip U19.

Preferably, the power supply module further comprises a power supply unit PWR9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C51, a capacitor C50, a capacitor C37, a capacitor C53, a capacitor C52 and a voltage stabilizing chip U11, wherein the power supply unit PWR9 is externally connected with alternating current, an input pin VIN of the voltage stabilizing chip U11, one end of the capacitor C9, one end of the capacitor C10, one end of the capacitor C11 and one end of the capacitor C12 are all connected with a fourth pin of the power supply unit PWR9, the other end of the capacitor C10, the other end of the capacitor C11 and the other end of the capacitor C12 are all connected with an eighth pin of the power supply unit PWR9, one end of the capacitor C51 and one end of the capacitor C50 are all connected with an output pin OUT of the voltage stabilizing chip U11, and the other end of the capacitor C37, the other end of the capacitor C53, the other end of the capacitor C52 and the voltage stabilizing chip U11 are all grounded.

Compared with the prior art, the utility model has the beneficial effects that: the method comprises the steps of acquiring an ArtNet signal through an Ethernet switch module, transmitting a differential signal to an Ethernet control module, communicating with an ARM processing module through the Ethernet control module, setting the ARM processing module communication through an external module, and driving the ARM processing module communication to independently output data through a plurality of DMX512 signal output modules.

Drawings

Fig. 1 is a schematic diagram of a network to DMX512 output converter according to the present utility model.

Fig. 2 is a circuit diagram of a filter circuit according to the present utility model.

Fig. 3 is a circuit diagram of a switching circuit according to the present utility model.

Fig. 4 is a circuit diagram of the network transformer U13 according to the present utility model.

Fig. 5 is a circuit diagram of the ethernet chip U12 according to the present utility model.

Fig. 6 is a circuit diagram of the DMX512 signal output module according to the present utility model.

Fig. 7 is a circuit diagram of a power supply module according to the present utility model.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model will be further described with reference to the accompanying drawings and detailed description below:

as shown in fig. 1-7, a network to DMX512 output converter includes an ethernet switch module, an ethernet control module, an ARM processing module, a peripheral module, and a plurality of DMX512 signal output modules, where an output end of the ethernet switch module is connected with an input end of the ethernet control module, an output end of the ethernet control module is connected with an input end of the ARM processing module, and an input end of the peripheral module and an input end of the DMX512 signal output module are both connected with an output end of the ARM processing module. In this embodiment, an ArtNet signal is obtained through an ethernet switch module, a differential signal is transmitted to an ethernet control module, the ethernet control module is communicated with an ARM processing module, the ARM processing module is communicated and set through a peripheral module, the ARM processing module is driven to independently output data through a plurality of DMX512 signal output modules, wherein the peripheral module comprises an LCD display screen, a combination key, a chip U16 and a chip U19, the LCD display screen is connected with a single chip microcomputer U18 through the chip U16, and the combination key is connected with the single chip microcomputer U18 through the chip U19. In this embodiment, the LCD display screen mainly adopts the RT0802 LCD display screen, the combination key mainly adopts the five-way combination key, the chip U16 and the chip U19 (the preferred model of the chip U16 and the chip U19 is 74HC 595) are controlled by using the GPIO port of the single chip microcomputer U18 in the ARM processing module communication, the chip U16 and the chip U19 are all universal LED driving chips with 8-bit serial input, 8-bit serial, parallel output and 3-state output functions, and the functions of the 8-bit data, the enable signal, the read-write signal, the data selection signal and the five-way combination key with up, down, left, right and determination keys of the RT0802 LCD display screen are respectively controlled. Therefore, the network information is inquired through the RT0802 LCD display screen, and the IP address, the input/output mode and the like can be freely set.

Further, the power supply module further comprises a power supply unit PWR9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C51, a capacitor C50, a capacitor C37, a capacitor C53, a capacitor C52 and a voltage stabilizing chip U11, wherein the power supply unit PWR9 is externally connected with alternating current, an input pin VIN of the voltage stabilizing chip U11, one end of the capacitor C9, one end of the capacitor C10, one end of the capacitor C11 and one end of the capacitor C12 are all connected with a fourth pin of the power supply unit PWR9, the other end of the capacitor C10, the other end of the capacitor C11 and the other end of the capacitor C12 are all connected with an eighth pin of the power supply unit PWR9, one end of the capacitor C51 and one end of the capacitor C50 are all connected with an output pin OUT of the voltage stabilizing chip U11, and the other end of the capacitor C37, the other end of the capacitor C50, the other end of the capacitor C53, the other end of the capacitor C52 and the voltage stabilizing chip U11 are all grounded. In the present embodiment, the wide voltage range of the power supply unit PWR9 is: the power supply module for converting 85-264V AC into DC is preferably an AWH10-10S05 model, can directly output 5V power supply, has a filtering function through a capacitor C9, a capacitor C10, a capacitor C11 and a capacitor C12, eliminates clutters for later-stage power supply, converts 5V into 3.3V by adopting a voltage stabilizing chip U11 (preferably an AMS117-3.3V model), supplies power to a relevant singlechip or chip in a converter, and has the functions of filtering and energy storage of a capacitor C51, a capacitor C50, a capacitor C37, a capacitor C53 and a capacitor C52.

Preferably, the Ethernet switch module comprises at least one filter circuit and a switching circuit, the filter circuit comprises a network interface J5, a network transformer U9, a resistor R10, a resistor R72, a resistor R88, a resistor PR5, a capacitor C1, a capacitor C78, a capacitor C86 and a capacitor C96, the switching circuit comprises an Ethernet switch chip U14, the first pin TX+, the second pin TX-, the third pin RX+ and the sixth pin RX-of the network interface J5 are respectively connected with a sixteenth pin TX+, a fourteenth pin TX-, an eleventh pin RX+ and a ninth pin RX-of the network transformer U9, the fifteenth pin TXC of the network transformer U9 is connected with a fifth pin of the resistor PR5, the fourth pin NC and the fifth pin NC of the network transformer U9 are respectively connected with a eighth pin of the resistor PR5, the seventh pin J5 is connected with a seventh pin RD and a seventh pin of the resistor PR5, the network transformer U is connected with one end of the network transformer U9, the resistor U is connected with one end of the resistor U9, the resistor R6 is connected with the resistor C6, the resistor R6 is connected with one end of the resistor U9, the resistor R6 is connected with the resistor R7, the resistor R6 is connected with the resistor R9, the eighth pin RD-of the network transformer U9 is connected with one end of a resistor R88, the other end of a resistor R10 and the other end of the resistor R9 are connected with one end of a capacitor C1, the other end of a resistor R72 and the other end of the resistor R88 are connected with one end of a capacitor C78, and the other end of the capacitor C1, the other end of the capacitor C78 and the other end of a capacitor C96 are grounded. In this embodiment, the ArtNet signal enters the converter through the network port J5 (preferably model RJ 45), firstly enters the ethernet switch module, and is subjected to coil coupling filtering by using differential mode coupling through the network transformer U9 (preferably model H1102 NL) to enhance the signal, and is coupled to the other end of the connection network cable with different levels through the conversion of the electromagnetic field, and different levels between different network devices connected with the network cable are isolated, so that the damage to the devices caused by the transmission of different voltages through the network cable is prevented, and the effects of signal coupling, high-voltage isolation, impedance matching, electromagnetic interference suppression and the like are played. Further, the network transformer U9 is connected to the resistor of the capacitor C86 (preferably 2 KV) and the resistor PR5 (preferably 75 ohms) to ground, and when noise is loaded on each pair of signal cables, the characteristic impedance is the resistance value of the resistor PR5, and the common mode noise is well led to ground. Meanwhile, the first pin TD+, the third pin TD-, the sixth pin RD+ and the eighth pin RD-are grounded through a resistor (the resistance values of the resistor R9, the resistor R10, the resistor R72 and the resistor R88 are preferably 49.9 ohms) and a capacitor (the capacitor C1 and the capacitor C78 are preferably 100 nF) so as to remove noise signals in signals, the network transformer U9 performs differential signal interaction with the Ethernet switch chip U14 through the first pin TD+, the third pin TD-, the sixth pin RD+ and the eighth pin RD-, and particularly the Ethernet switch chip U14 (preferably model RTL8304 MB-CG) is a 4-port 10/100M Ethernet switch controller, and 4 memories and three physical layer transceivers are integrated. Through three physical layer transceivers in the Ethernet switching chip, cascade connection of a plurality of Ethernet switching chips is realized, and the Ethernet switching chip U14 supports various protocols of industrial application, and the expansion and flexible configuration are that the switching chip is easily connected to any processor, so that the efficiency of industrial automation scenes is greatly improved.

Further, the ethernet control module includes an ethernet chip U12 and a network transformer U13, an output end of the ethernet switch chip U14 is connected with an input end of the ethernet chip U12 through the network transformer U13, and an output end of the ethernet chip U12 is connected with an input end of the ARM processing module. In this embodiment, the network transformer U13 (preferably model H1102 NL) performs differential signal interaction with the ethernet switch U14, and filters the signals through differential mode coupled coils to enhance the signals, and simultaneously connects the signals to ground through resistors and capacitors, so that the signals output the strongest signal to remove noise signals in the signals, and then connects the differential signal for transmission and reception to the ethernet chip U12 (preferably model W5500), and further, a resistor (preferably 12.4K ohms, with an accuracy of 1%) for providing bias voltage for the internal analog circuit needs to be added to the tenth pin of the ethernet chip U12. The twenty-fifth pin of the Ethernet chip U12 is connected with an indicator lamp and then is pulled up with a resistor for displaying the network connection state. When the level is low, the indicator light is on, indicating that the network is connected, and when the level is high, the indicator light is off, indicating that the network is not connected. Further ethernet chip U12 provides an SPI (serial external interface) as a peripheral interface, with thirty-second pin SCSn, thirty-third pin SCLK, thirty-fourth pin MOSI and thirty-fifth pin MISO all functioning as SPI slaves, connected to the SPI signal of the single chip U18. The thirty-sixth pin INTn and the thirty-seventh pin RSTn of the ethernet chip U12 are also connected to the single-chip microcomputer U18 as interrupt output and reset functions. In this embodiment, when the differential signal enters the ethernet chip U12, the direct SPI interface may communicate with the single-chip U18, and support auto-negotiation (10/100-Based full duplex/half duplex), power down mode, and wake-up function, providing a simpler, faster, stable, and safe ethernet access scheme for the single-chip.

Preferably, the ARM processing module comprises a single-chip microcomputer U18, and the output end of the Ethernet chip U12, the input end of the peripheral module and the input end of the DMX512 signal output module are all connected with the input end of the single-chip microcomputer U18. In this embodiment, the single-chip microcomputer U18 is preferably an ARM 32-bit M4 core single-chip microcomputer, and the model is AT32F403AVCT7, when the ethernet chip U12 inputs data from the SPI interface to the single-chip microcomputer U18, the data can be output independently through 8 USART serial ports inside the single-chip microcomputer U18, and converted into 8 paths of DMX512 signals, and 4096 paths. The singlechip U18 displays the network information on the RT0802 LCD display screen through the GPIO port, and the five combined keys can set IP addresses, input and output modes and the like.

Preferably, the DMX512 signal output module includes a differential bus transceiver U1, where the differential bus transceiver U1 is connected to an input end of the single-chip microcomputer U18. In this embodiment, 8 DMX512 signal output modules may be provided, in which eight ADM2483 differential bus transceivers are mainly used as an integrated current isolation device, and preferably, eight HCS1-05S05DC/DC power modules are also provided as an isolated constant voltage output power module, to convert 5V into 5V, and the isolated output voltage is supplied to VDD2 of eight ADM2483 for single use, and capacitive filtering is added to the input and output of each HCS1-05S05DC/DC power module due to the reduction of ripple of the input and output. Each path is independently powered, so that one path is prevented from being damaged by high-voltage discharge or other reasons, and then other paths are prevented from being damaged, and each path is ensured to work independently and is not interfered. And has the following functions: 1. safety isolation: isolation drive/surge isolation protection/lightning isolation protection; 2. noise isolation: (analog circuit isolated from digital circuit, strong and weak signal isolated); 3. ground loop cancellation: a remote signal transmission/distributed power supply system. Preferably, the differential bus transceiver U1 is functionally equivalent to integrating three single-channel optocouplers and one RS485 transceiver, which greatly simplifies the circuit and improves the performance. Each differential bus transceiver U1 communicates with the single chip microcomputer U18 using a serial port USART, converts the TTL (3.3V) level into the RS485 level, and pins RE and DE of the differential bus transceiver U1 are selected to transmit and receive modes, and one GPIO of the single chip microcomputer U18 is used to control the transmit and receive modes. When the singlechip U18 does not transmit data, TXD is high level, re=de=0, the differential bus transceiver U1 is in a receiving mode, a and B are in a high-impedance state, the signal is controlled by the other end, and RXD is the received data. When the single chip microcomputer U18 transmits data, the differential bus transceiver U1 is in the transmission mode, and the differential bus transceiver U1 transmits data when TXD is 0, wherein re=de=1. However, the peripheral a pin has a pull-up resistor (a=1), and the B pin has a pull-down resistor (b=0), so that the circuit can receive a=1 and b=0, i.e. receive differential signal data 1, for the far end, and thus, the circuit can transmit and receive normally. A diode is connected in series between the A, B pins of each path in order to indicate the state of each path of the output signal. The network console can be used as a console DMX output expander by matching with the converter, and the communication distance and the communication range are expanded.

It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.

Claims (7)

1. A network to DMX512 output converter, characterized by: the intelligent power supply system comprises an Ethernet switch module, an Ethernet control module, an ARM processing module, a peripheral module and a plurality of DMX512 signal output modules, wherein the output end of the Ethernet switch module is connected with the input end of the Ethernet control module, the output end of the Ethernet control module is connected with the input end of the ARM processing module, and the input end of the peripheral module and the input end of the DMX512 signal output module are connected with the output end of the ARM processing module.

2. The network to DMX512 output converter of claim 1, wherein: the Ethernet switch module comprises at least one filter circuit and a switching circuit, the filter circuit comprises a network interface J5, a network transformer U9, a resistor R10, a resistor R72, a resistor R88, a resistor PR5, a capacitor C1, a capacitor C78, a capacitor C86 and a capacitor C96, the switching circuit comprises an Ethernet switch chip U14, the first pin TX+, the second pin TX-, the third pin RX+ and the sixth pin RX-of the network interface J5 are respectively connected with a sixteenth pin TX+, a fourteenth pin TX-, an eleventh pin RX+ and a ninth pin RX-of the network transformer U9, the fifteenth pin TXC of the network transformer U9 is connected with a fifth pin of the resistor PR5, the fifteenth pin RXC of the network transformer U9 is connected with a sixth pin of the resistor PR5, the fourth pin NC and the fifth pin NC of the network interface J5 are all connected with an eighth pin of the resistor PR5, the seventh pin NC of the network interface J5 is connected with a seventh pin NC and a seventh pin NC of the resistor PR5, the seventh pin NC is connected with a third pin of the resistor U9, the resistor R6 is connected with the resistor R9, the resistor R10 is connected with the resistor R9, the resistor R9 is connected with the other end of the resistor R9, the resistor R9 is connected with the resistor R9, the eighth pin RD-of the network transformer U9 is connected with one end of a resistor R88, the other end of a resistor R10 and the other end of the resistor R9 are connected with one end of a capacitor C1, the other end of a resistor R72 and the other end of the resistor R88 are connected with one end of a capacitor C78, and the other end of the capacitor C1, the other end of the capacitor C78 and the other end of a capacitor C96 are grounded.

3. The network to DMX512 output converter of claim 2, wherein: the Ethernet control module comprises an Ethernet chip U12 and a network transformer U13, wherein the output end of the Ethernet switch chip U14 is connected with the input end of the Ethernet chip U12 through the network transformer U13, and the output end of the Ethernet chip U12 is connected with the input end of the ARM processing module.

4. The network to DMX512 output converter of claim 3, wherein: the ARM processing module comprises a single-chip microcomputer U18, and the output end of the Ethernet chip U12, the input end of the peripheral module and the input end of the DMX512 signal output module are all connected with the input end of the single-chip microcomputer U18.

5. The network to DMX512 output converter of claim 4, wherein: the DMX512 signal output module comprises a differential bus transceiver U1, and the differential bus transceiver U1 is connected with the input end of the singlechip U18.

6. The network to DMX512 output converter of claim 4, wherein: the peripheral module comprises an LCD display screen, a combined key, a chip U16 and a chip U19, wherein the LCD display screen is connected with the single-chip microcomputer U18 through the chip U16, and the combined key is connected with the single-chip microcomputer U18 through the chip U19.

7. The network to DMX512 output converter of claim 1, wherein: the power supply module further comprises a power supply unit PWR9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C51, a capacitor C50, a capacitor C37, a capacitor C53, a capacitor C52 and a voltage stabilizing chip U11, wherein the power supply unit PWR9 is externally connected with alternating current, an input pin VIN of the voltage stabilizing chip U11, one end of the capacitor C9, one end of the capacitor C10, one end of the capacitor C11 and one end of the capacitor C12 are all connected with a fourth pin of the power supply unit PWR9, the other end of the capacitor C10, the other end of the capacitor C11 and the other end of the capacitor C12 are all connected with an eighth pin of the power supply unit PWR9, one end of the capacitor C51 and one end of the capacitor C50 are all connected with an output pin OUT of the voltage stabilizing chip U11, and the other end of the capacitor C51, the other end of the capacitor C50, the other end of the capacitor C37, the other end of the capacitor C52 and the ground voltage stabilizing pin GND 11 of the voltage stabilizing chip C52 are all connected with the ground.

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