MIDI and DMX interconversion device

Abstract

The utility model discloses an MIDI and DMX interconversion device, which comprises an MCU module, a control panel and a plurality of interface modules, wherein the control panel and the interface modules are connected with the MCU module; the interface module is provided with at least one DMX interface used for DMX information communication and at least one MIDI interface used for MIDI information communication, and the MCU module can edit the conversion relation between DMX information and MIDI information through the control panel; when the MCU module receives any one of the DMX information or the MIDI information, the DMX information or the MIDI information can be converted into the corresponding MIDI information or the DMX information according to a preset conversion relation. Compared with the prior art, the interconversion of MIDI and DMX can be realized, so that a music player can quickly operate stage equipment such as lighting equipment, and a stage lamp player can quickly play MIDI musical instruments.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic musical instrument field, especially a MIDI and DMX mutual conversion device. BACKGROUND

[0002] At present, stage performance cannot do without the effect control of digital music and light equipment. MIDI is used for the communication of digital musical instruments as a musical instrument digital interface. And DMX512 is used for the control of stage light equipment as a communication protocol of stage light equipment.

[0003] Generally, the cooperation of MIDI and DMX512 is needed to complete a stage performance. It is very inconvenient for the user who can only play music or stage light.

[0004] Therefore, how to design a MIDI and DMX mutual conversion device, so that the music player can quickly operate the stage equipment such as light, or the stage light player can quickly play MIDI musical instrument, is a technical problem to be solved in the industry. UTILITY MODEL CONTENTS

[0005] In view of the problem that the MIDI and DMX related devices cannot be well converted in the prior art, leading to the inconvenience of stage performance for the user who can only play music or stage light, the utility model provides a MIDI and DMX mutual conversion device.

[0006] The technical scheme of the utility model provides a MIDI and MDX mutual conversion device, which comprises an MCU module, and a control panel and a plurality of interface modules connected with the MCU module.

[0007] The interface module has at least one DMX interface for DMX information communication and at least one MIDI interface for MIDI information communication, and the MCU module can edit the conversion relationship of the DMX information and the MIDI information through the control panel.

[0008] When the MCU module receives any one of the DMX information or the MIDI information, it can be converted into the corresponding MIDI information or DMX information according to the pre-set conversion relationship.

[0009] Further, the control panel comprises a display screen, a power switch and a plurality of adjustment switches.

[0010] The adjustment switch is used to edit the conversion relationship of the DMX information and the MIDI information.

[0011] Further, according to the above-mentioned MIDI and DMX mutual conversion device, the interface module comprises a front-end interface and a rear-end interface.

[0012] The front-end interface is provided with four interfaces, which are all DMX output interfaces or DMX input interfaces.

[0013] The rear-end interface is provided with four interfaces, which are a MIDI OUT interface, a MIDI IN interface, a USB interface and a DCIN interface.

[0014] Further, the MIDI IN circuit is connected between the MIDI IN interface and the MCU module.

[0015] The MIDI IN circuit comprises a resistor R1, a resistor R2, a diode D2 and a capacitor C5.

[0016] The first end of the optocoupler U6 is connected to the fourth pin of the MIDI IN interface in series with the resistor R2, the third end of the optocoupler U6 is connected to the fifth pin of the MIDI IN interface, the fourth end of the optocoupler U6 is grounded, the fifth end of the optocoupler U6 is connected to the 3.3V power supply in series with the resistor R1, the sixth end of the optocoupler U6 is connected to the 3.3V power supply, one end of the capacitor C5 is connected between the resistor R1 and the 3.3V power supply, the other end of the capacitor C5 is grounded, and the RX0 pin of the MCU module is connected between the resistor R1 and the fifth end of the optocoupler U6.

[0017] Further, the MIDI OUT circuit is connected between the MIDI OUT interface and the MCU module.

[0018] The MIDI OUT circuit comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C8, a transistor Q1 and a transistor Q2.

[0019] The collector of the transistor Q1 is connected to the 5V power supply in series with the resistor R3, the base of the transistor Q1 is connected to the TX0 pin of the MCU module in series with the resistor R6, the emitter of the transistor Q1 is grounded, the collector of the transistor Q2 is connected to the fifth pin of the MIDI OUT interface in series with the resistor R4, the base of the transistor Q2 is connected between the collector of the transistor Q1 and the resistor R3, the emitter of the transistor Q2 is grounded, the fourth pin of the MIDI OUT interface is connected to the 5V power supply in series with the resistor R5, the second pin of the MIDI OUT interface is grounded, one end of the capacitor C8 is connected between the resistor R5 and the 5V power supply, and the other end of the capacitor C8 is grounded.

[0020] Further, the DMX circuit connected with the DMX output interface or the DMX input interface is further included;

[0021] The DMX circuit includes: resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, capacitor C11, capacitor C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16, bidirectional diode D3, bidirectional diode D4, bidirectional diode D5, optocoupler U7, optocoupler U8, optocoupler U9, communication chip IC1, connector P6;

[0022] The first end of the optocoupler U7 is connected to a 5V power supply, the third end of the optocoupler U7 is connected to the RO pin of the communication chip IC1 after being connected with the resistance R8 in series, the fourth end of the optocoupler U7 is grounded, the fifth end of the optocoupler U7 is connected to the DMX1-RX pin of the DMX output interface or the DMX input interface, the sixth end of the optocoupler U7 is connected to a 3.3V power supply, one end of the resistance R7 is connected to the sixth end of the optocoupler U7 and the 3.3V power supply, the other end of the resistance R7 is connected to the DMX1-RX pin of the DMX output interface or the DMX input interface and the fifth end of the optocoupler U7, one end of the capacitor C11 is connected to the sixth end of the optocoupler U7 and the 3.3V power supply, the other end of the capacitor C11 is grounded;

[0023] The first end of the optocoupler U8 is connected to a 3.3V power supply, the third end of the optocoupler U8 is connected to the DMX1-TX pin of the DMX output interface or the DMX input interface after being connected with the resistance R15 in series, the fourth end of the optocoupler U8 is grounded, the fifth end of the optocoupler U8 is connected to a 5V power supply after being connected with the resistance R10 in series, the sixth end of the optocoupler U8 is connected to the resistance R10 and the 5V power supply, one end of the capacitor C14 is connected to the first end of the optocoupler U8 and the 3.3V power supply, the other end of the capacitor C14 is grounded, one end of the capacitor C13 is connected to the resistance R10 and the 5V power supply, the other end of the capacitor C13 is grounded, the DI pin of the communication chip IC1 is connected to the fifth end of the optocoupler U8 and the resistance R10;

[0024] The first end of the optocoupler U9 is connected to 3.3V power supply, the third end of the optocoupler U9 is connected to the DMX1-EN pin of the DMX output interface or DMX input interface after being connected in series with the resistor R17, the fourth end of the optocoupler U9 is grounded, the fifth end of the optocoupler U9 is connected to 5V power supply after being connected in series with the resistor R11, the sixth end of the optocoupler U8 is connected to 5V power supply, one end of the capacitor C15 is connected between the first end of the optocoupler U9 and 3.3V power supply, the other end of the capacitor C15 is grounded, one end of the capacitor C16 is connected between the sixth end of the optocoupler U9 and 5V power supply, the other end of the capacitor C16 is grounded, the RE pin and DE pin of the communication chip IC1 are both connected between the resistor R11 and the fifth end of the optocoupler U9;

[0025] One end of the resistor R16 is connected to 5V power supply, the other end of the resistor R16 is grounded after being connected in series with the resistor R13 and resistor R9 in turn, the VCC pin of the communication chip IC1 is connected to 5V power supply, the B pin of the communication chip IC1 is connected between the resistor R9 and the resistor R13, the A pin of the communication chip IC1 is connected between the resistor R13 and the resistor R16, the GND pin of the communication chip IC1 is grounded, the first end of the connector P6 is grounded, the second end of the connector P6 is connected between the resistor R9 and the resistor R13 after being connected in series with the resistor R12, the third end of the connector P6 is connected between the resistor R13 and the resistor R16 after being connected in series with the resistor R14, one end of the diode D3 is connected between the resistor R12 and the second end of the connector P6, the other end of the diode D3 is connected between the resistor R14 and the third end of the connector P6, one end of the diode D4 is connected between the resistor R12 and the second end of the connector P6, the other end of the diode D4 is grounded, one end of the diode D5 is connected between the first end of the connector P6 and ground, the other end of the diode D5 is connected between the third end of the connector P6 and the resistor R14.

[0026] Further, the DC power supply circuit connected with the DC IN interface is further included;

[0027] The DC power supply circuit includes: resistor R19, resistor R19, resistor R20, resistor R21, resistor R22, resistor R23, resistor R24, capacitor C17, capacitor C18, capacitor C19, capacitor C20, capacitor C21, capacitor C24, diode D6, diode D7, inductor L1, field effect transistor M1, triode Q3, power switch S1, joint J1, power management chip U10;

[0028] The IN pin of the power management chip U10 is connected to the first end of the connector J1, the EN pin of the power management chip U10 is connected to the IN pin of the power management chip U10 and the first end of the connector J1 in series after being connected to the resistor R18, the GND pin of the power management chip U10 is grounded, the LX pin of the power management chip is connected to the 5V power supply in series after the inductor L1 and the field effect transistor M1, one end of the resistor R19 is connected to the inductor L1 and the field effect transistor M1, the other end of the resistor R19 is grounded after being connected to the resistor R21 in series, the FB pin of the power management chip U10 is connected to the resistor R19 and the resistor R21, and then the capacitor C20 is connected to the inductor L1 and the field effect transistor M1 in series, the second end and the third end of the connector J1 are grounded, one end of the capacitor C18 and the capacitor C19 is connected to the IN pin of the power management chip U10 and the first end of the connector J1, the other end of the capacitor C18 and the capacitor C19 is grounded, one end of the capacitor C21 and the capacitor C24 is connected to the inductor L1 and the field effect transistor M1, the other end of the capacitor C21 and the capacitor C24 is grounded;

[0029] The collector of the triode Q3 is connected to the control end of the field effect transistor M1 in series after the resistor R22, the emitter of the triode Q3 is grounded, the base of the triode Q3 is connected to the PWR-CTL pin of the MCU module in series after the resistor R23, one end of the resistor R20 is connected to the inductor L1 and the field effect transistor M1, the other end of the resistor R20 is connected to the control end of the field effect transistor M1 and the resistor R22, one end of the resistor R24 is connected to the base of the triode Q3 and the resistor R23, the other end of the resistor R24 is grounded, the positive electrode of the diode D6 is connected to the resistor R22 and the collector of the triode Q3, the negative electrode of the diode D6 is connected to the negative electrode of the diode D7, the positive electrode of the diode D7 is connected to the PWR-DET pin of the MCU module, one end of the power switch S1 is connected to the negative electrode of the diode D6 and the negative electrode of the diode D7, the other end of the power switch S1 is grounded.

[0030] Further, a DMX isolation module is connected in series between each of the DMX output interface or the DMX input interface and the MCU module;

[0031] The DMX isolation module at least has an isolation chip, and a D-RX pin of the isolation chip is connected to an RX pin of the MCU module, a D-TX pin of the isolation chip is connected to a TX pin of the MCU module, a D-EN pin of the isolation chip is connected to an EN pin of the MCU module, and a DMX-A pin, a DMX-B pin and a D-GND pin of the isolation chip are respectively connected to corresponding terminals of the DMX output interface or the DMX input interface.

[0032] Further, the DMX isolation power supply arranged in the MCU module is further included.

[0033] The DMX isolation power supply comprises a resistor R25, an inductor L2, an inductor L3, a capacitor C25, a capacitor C26, a light emitting diode D8 and a power supply chip U12.

[0034] A VIN pin of the power supply chip U12 is connected to a 5V power supply in series with the inductor L3, a GND pin of the power supply chip U12 is grounded, a Vo pin of the power supply chip U12 outputs a 5V voltage in series with the inductor L2, a 0V pin of the power supply chip U12 is grounded, one end of the capacitor C25 is connected to the inductor L3 and the 5V power supply, the other end of the capacitor C25 is grounded, one end of the capacitor C26 is connected to the inductor L2, the other end of the capacitor C26 is grounded, one end of the resistor R25 is connected to the inductor L2, and the other end of the resistor R25 is grounded in series with the light emitting diode D8.

[0035] Further, the voltage stabilizing power supply circuit arranged in the MCU module is further included.

[0036] The voltage stabilizing power supply circuit comprises a capacitor C22, a capacitor C23 and a power management chip U11.

[0037] A VIN pin of the power management chip U11 is connected to a 5V power supply, a VOUT pin of the power management chip U11 outputs a 3.3V voltage, a GND pin of the power management chip U11 is grounded, and one end of the capacitor C22 and one end of the capacitor C23 are both connected to the VOUT pin of the power management chip U11, and the other end of the capacitor C22 and the other end of the capacitor C23 are both grounded.

[0038] Compared with the prior art, the utility model has at least the following beneficial effects:

[0039] 1. The utility model discloses can edit the conversion relation of DMX information and MIDI information through the control panel, make the utility model when receiving MIDI information or DMX information, will according to the conversion of edited conversion relation and convert, thereby making that the music player can operate the stage equipment such as light quickly, and the stage lamp tube player can play MIDI musical instrument quickly;

[0040] 2. The utility model discloses convenient in MIDI connection, has the USB, traditional MIDI five needle mouth, RTP-MIDI mouthful multiple MIDI's connection mode of mouth, can connect the most MIDI musical instrument and MIDI orchestration software on the market, in the aspect of DMX connection, has the USB, DMX card nook, Art-Net mouthful multiple connection mode, supports the connection most DMX512 equipment. DRAWINGS

[0041] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be to the embodiment or the description of prior art needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0042] Figure 1 It is the module connection schematic diagram of the utility model whole;

[0043] Figure 2 It is the structure schematic diagram of the utility model control panel;

[0044] Figure 3 It is the structure schematic diagram of the utility model rear end interface;

[0045] Figure 4 It is the structure schematic diagram of the utility model front end interface;

[0046] Figure 5 It is the topology schematic diagram of the utility model MCU module and its connecting circuit;

[0047] Figure 6 It is the topology schematic diagram of the utility model DMX circuit;

[0048] Figure 7 It is the topology schematic diagram of the utility model DC power supply circuit;

[0049] Figure 8 It is the topology schematic diagram of the utility model DMX isolation power supply;

[0050] Figure 9 It is the topology schematic diagram of the utility model voltage stabilizing power supply circuit. DETAILED DESCRIPTION

[0051] In order to make the technical problems, technical solutions and beneficial effects of the utility model to be solved clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments.

[0052] Therefore, one feature indicated in the specification will be used to explain one feature of one embodiment of the utility model, and it is not suggested that each embodiment of the utility model must have the explained feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations that are not explicitly explained. Therefore, unless otherwise explained, the explained combinations are not intended to be limited.

[0053] The principles and structures of the utility model will be described in detail below in combination with the drawings and embodiments.

[0054] Generally, a stage performance will need the cooperation of MIDI and DMX devices, which is very inconvenient for users who can only play music or stage lights.

[0055] In view of the above problems, the utility model provides a MIDI and DMX mutual conversion device, which specifically comprises an MCU module, and a control panel and a plurality of interface modules connected with the MCU module;

[0056] The interface module has at least one DMX interface for DMX information communication and at least one MIDI interface for MIDI information communication, and the MCU module can edit the conversion relationship of DMX information and MIDI information through the control panel;

[0057] When the MCU module receives any one of the DMX information or the MIDI information, it can be converted into the corresponding MIDI information or DMX information according to the pre-set conversion relationship.

[0058] Please refer to Figure 1 The above-mentioned MIDI interface comprises Figure 1MIDI IN and MIDIOUT in the MCU module, which are used for input and output of MIDI information, the DMX interface includes DMX1, DMX2, DMX3, DMX4, which are used for input and output of DMX information, the MIDI interface, the DMX interface and the control panel are all connected to the MCU module, corresponding buttons are arranged on the control panel, the conversion relationship of the DMX information and the MIDI information can be edited in advance, when the MIDI information or the DMX information is transmitted into the MCU module, the corresponding MIDI information and DMX information can be converted according to the conversion relationship set in advance, and the conversion relationship is output through the corresponding MIDI interface or DMX interface, so that the mutual conversion of the DMX information and the MIDI information is realized;

[0059] Based on the above design, the music player can quickly operate the stage equipment such as light through the MIDI instrument, and the stage lamp player can quickly play the MIDI instrument through the stage equipment, so that the user can use conveniently.

[0060] Please refer to Figure 2 , the control panel includes a display screen, a power switch and a plurality of adjusting switches;

[0061] The adjusting switch is used for editing the conversion relationship of the DMX information and the MIDI information.

[0062] The adjusting switch is also Figure 2 Up, down, knob, confirm, return, etc. in the MCU module, after the corresponding editing program is set in advance in the control panel, the conversion relationship of the DMX information and the MIDI information can be edited through the adjusting switch, so as to be used for mutual conversion of the DMX information and the MIDI information.

[0063] Please refer to Figure 1 , Figure 3 , and Figure 4 The interface module includes front interfaces and rear interfaces, wherein the front interfaces are provided with four, and are all configured as DMX output interfaces or DMX input interfaces;

[0064] The rear interfaces are provided with four, which are MIDIOUT interface, MIDI IN interface, USB interface and DC IN interface;

[0065] The MIDI IN interface and the MIDIOUT interface can be configured as traditional MIDI five-pin interface or RTP-MIDI network interface, so that it is more convenient to connect the MIDI device, and most of the MIDI instruments and MIDI composition software on the market can be connected;

[0066] The DMX interface can be set as a USB, a DMX card interface, an Art-Net network interface and the like, thereby supporting connection of most DMX512 devices.

[0067] Based on the above design, please refer to Figure 5 The utility model also includes MIDI IN circuitry connected between the MIDI IN interface and the MCU module.

[0068] The MIDI IN circuitry includes a resistor R1, a resistor R2, a diode D2, a capacitor C5 and an optocoupler U6.

[0069] The first end of the optocoupler U6 is connected to the fourth pin of the MIDI IN interface in series with the resistor R2, the third end of the optocoupler U6 is connected to the fifth pin of the MIDI IN interface, the fourth end of the optocoupler U6 is grounded, the fifth end of the optocoupler U6 is connected to the 3.3V power supply in series with the resistor R1, the sixth end of the optocoupler U6 is connected to the 3.3V power supply, one end of the capacitor C5 is connected between the resistor R1 and the 3.3V power supply, the other end of the capacitor C5 is grounded, and the RX0 pin of the MCU module is connected between the resistor R1 and the fifth end of the optocoupler U6.

[0070] Please refer to Figure 5 The utility model also includes MIDIOUT circuitry connected between the MIDIOUT interface and the MCU module.

[0071] The MIDIOUT circuitry includes a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C8, a transistor Q1 and a transistor Q2.

[0072] The collector of the transistor Q1 is connected to the 5V power supply in series with the resistor R3, the base of the transistor Q1 is connected to the TX0 pin of the MCU module in series with the resistor R6, the emitter of the transistor Q1 is grounded, the collector of the transistor Q2 is connected to the fifth pin of the MIDIOUT interface in series with the resistor R4, the base of the transistor Q2 is connected between the collector of the transistor Q1 and the resistor R3, the emitter of the transistor Q2 is grounded, the fourth pin of the MIDIOUT interface is connected to the 5V power supply in series with the resistor R5, the second pin of the MIDIOUT interface is grounded, one end of the capacitor C8 is connected between the resistor R5 and the 5V power supply, and the other end of the capacitor C8 is grounded.

[0073] Please refer to Figure 6 The utility model also includes DMX circuitry connected to the DMX output interface or the DMX input interface.

[0074] The DMX circuit comprises: resistors R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, capacitors C11, C12, C13, C14, C15, C16, bidirectional diodes D3, D4, D5, optocouplers U7, U8, U9, a communication chip IC1, and a connector P6.

[0075] A first end of the optocoupler U7 is connected to a 5V power supply, a third end of the optocoupler U7 is connected to the RO pin of the communication chip IC1 in series with the resistor R8, a fourth end of the optocoupler U7 is grounded, a fifth end of the optocoupler U7 is connected to the DMX1-RX pin of the DMX output interface or the DMX input interface, a sixth end of the optocoupler U7 is connected to a 3.3V power supply, one end of the resistor R7 is connected between the sixth end of the optocoupler U7 and the 3.3V power supply, the other end of the resistor R7 is connected between the DMX1-RX pin of the DMX output interface or the DMX input interface and the fifth end of the optocoupler U7, one end of the capacitor C11 is connected between the sixth end of the optocoupler U7 and the 3.3V power supply, and the other end of the capacitor C11 is grounded.

[0076] A first end of the optocoupler U8 is connected to a 3.3V power supply, a third end of the optocoupler U8 is connected to the DMX1-TX pin of the DMX output interface or the DMX input interface in series with the resistor R15, a fourth end of the optocoupler U8 is grounded, a fifth end of the optocoupler U8 is connected to a 5V power supply in series with the resistor R10, a sixth end of the optocoupler U8 is connected between the resistor R10 and the 5V power supply, one end of the capacitor C14 is connected between the first end of the optocoupler U8 and the 3.3V power supply, the other end of the capacitor C14 is grounded, one end of the capacitor C13 is connected between the resistor R10 and the 5V power supply, the other end of the capacitor C13 is grounded, and the DI pin of the communication chip IC1 is connected between the fifth end of the optocoupler U8 and the resistor R10.

[0077] A first end of the optocoupler U9 is connected to a 3.3V power supply, a third end of the optocoupler U9 is connected to the DMX1-EN pin of the DMX output interface or the DMX input interface in series with the resistor R17, a fourth end of the optocoupler U9 is grounded, a fifth end of the optocoupler U9 is connected to a 5V power supply in series with the resistor R11, a sixth end of the optocoupler U8 is connected to the 5V power supply, one end of the capacitor C15 is connected between the first end of the optocoupler U9 and the 3.3V power supply, the other end of the capacitor C15 is grounded, one end of the capacitor C16 is connected between the sixth end of the optocoupler U9 and the 5V power supply, the other end of the capacitor C16 is grounded, and the RE pin and the DE pin of the communication chip IC1 are both connected between the resistor R11 and the fifth end of the optocoupler U9.

[0078] One end of resistor R16 is connected to 5V power supply, the other end of resistor R16 is connected to ground in sequence through resistor R13 and resistor R9, VCC pin of communication chip IC1 is connected to 5V power supply, B pin of communication chip IC1 is connected between resistor R9 and resistor R13, A pin of communication chip IC1 is connected between resistor R13 and resistor R16, GND pin of communication chip IC1 is connected to ground, the first end of connector P6 is connected to ground, the second end of connector P6 is connected between resistor R9 and resistor R13 through resistor R12, the third end of connector P6 is connected between resistor R13 and resistor R16 through resistor R14, one end of bidirectional diode D3 is connected between resistor R12 and the second end of connector P6, the other end of bidirectional diode D3 is connected between resistor R14 and the third end of connector P6, one end of bidirectional diode D4 is connected between resistor R12 and the second end of connector P6, the other end of bidirectional diode D4 is connected to ground, one end of bidirectional diode D5 is connected between the first end of connector P6 and ground, the other end of bidirectional diode D5 is connected between the third end of connector P6 and resistor R14.

[0079] Please refer to Figure 7 The utility model discloses still include with DC IN interface connection's DC power supply circuit,

[0080] DC power supply circuit includes: resistance R19, resistance R19, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, electric capacity C17, electric capacity C18, electric capacity C19, electric capacity C20, electric capacity C21, electric capacity C24, diode D6, diode D7, inductance L1, field effect tube M1, triode Q3, power switch S1, junction J1, power management chip U10,

[0081] The first end of junction J1 is connected to the IN pin of power management chip U10, the EN pin of power management chip U10 is connected between the IN pin of power management chip U10 and the first end of junction J1 through resistance R18, the GND pin of power management chip U10 is connected to ground, the LX pin of power management chip is connected to 5V power supply through inductance L1 and field effect tube M1 in sequence, one end of resistance R19 is connected between inductance L1 and field effect tube M1, the other end of resistance R19 is connected to ground through resistance R21, the FB pin of power management chip U10 is connected between resistance R19 and resistance R21, and then electric capacity C20 is connected between inductance L1 and field effect tube M1, the second end and the third end of junction J1 are connected to ground, one end of electric capacity C18 and electric capacity C19 is connected between the IN pin of power management chip U10 and the first end of junction J1, the other end of electric capacity C18 and electric capacity C19 is connected to ground, one end of electric capacity C21 and electric capacity C24 is connected between inductance L1 and field effect tube M1, the other end of electric capacity C21 and electric capacity C24 is connected to ground.

[0082] The collector of the triode Q3 is connected to the control end of the field effect transistor M1 in series with a resistor R22, the emitter of the triode Q3 is grounded, the base of the triode Q3 is connected to the PWR-CTL pin of the MCU module in series with a resistor R23, one end of a resistor R20 is connected between the inductor L1 and the field effect transistor M1, the other end of the resistor R20 is connected between the control end of the field effect transistor M1 and the resistor R22, one end of a resistor R24 is connected between the base of the triode Q3 and the resistor R23, the other end of the resistor R24 is grounded, the positive electrode of a diode D6 is connected between the resistor R22 and the collector of the triode Q3, the negative electrode of the diode D6 is connected to the negative electrode of a diode D7, the positive electrode of the diode D7 is connected to the PWR-DET pin of the MCU module, one end of a power switch S1 is connected between the negative electrode of the diode D6 and the negative electrode of the diode D7, the other end of the power switch S1 is grounded.

[0083] Please refer to Figure 5 The utility model discloses a DMX isolation module and a DMX isolation power supply circuit, and the DMX isolation module is arranged between each DMX output interface or DMX input interface and the MCU module.

[0084] The DMX isolation module at least has an isolation chip, and the D-RX pin of the isolation chip is connected to the RX pin of the MCU module, the D-TX pin of the isolation chip is connected to the TX pin of the MCU module, the D-EN pin of the isolation chip is connected to the EN pin of the MCU module, and the DMX-A pin, the DMX-B pin and the D-GND pin of the isolation chip are respectively connected to the corresponding terminals of the DMX output interface or the DMX input interface.

[0085] Please refer to Figure 8 The utility model discloses a DMX isolation module and a DMX isolation power supply circuit, and the DMX isolation module is arranged between each DMX output interface or DMX input interface and the MCU module.

[0086] The DMX isolation power supply includes a resistor R25, an inductor L2, an inductor L3, a capacitor C25, a capacitor C26, a light emitting diode D8 and a power chip U12.

[0087] The VIN pin of the power chip U12 is connected to a 5V power supply in series with the inductor L3, the GND pin of the power chip U12 is grounded, the Vo pin of the power chip U12 outputs a 5V voltage in series with the inductor L2, the 0V pin of the power chip U12 is grounded, one end of the capacitor C25 is connected between the inductor L3 and the 5V power supply, the other end of the capacitor C25 is grounded, one end of the capacitor C26 is connected to the inductor L2, the other end of the capacitor C26 is grounded, one end of the resistor R25 is connected to the inductor L2, and the other end of the resistor R25 is grounded in series with the light emitting diode D8.

[0088] Please refer to Figure 9 The utility model discloses a DMX isolation module and a DMX isolation power supply circuit, and the DMX isolation module is arranged between each DMX output interface or DMX input interface and the MCU module.

[0089] The voltage stabilizing power supply circuit comprises a capacitor C22, a capacitor C23 and a power management chip U11.

[0090] The VIN pin of the power management chip U11 is connected to a 5V power supply, the VOUT pin of the power management chip U11 outputs a 3.3V voltage, the GND pin of the power management chip U11 is grounded, one end of the capacitor C22 and the capacitor C23 is connected to the VOUT pin of the power management chip U11, and the other end of the capacitor C22 and the capacitor C23 is grounded.

[0091] Based on the above setting, the utility model has at least the following beneficial effects:

[0092] 1、The utility model discloses can edit the conversion relation of DMX information and MIDI information through the control panel, so that the utility model can convert according to the edited conversion relation when receiving MIDI information or DMX information, so that the music player can quickly operate the stage equipment such as light, and the stage lamp tube player can quickly play the MIDI instrument.

[0093] 2、The utility model is convenient in MIDI connection, has the USB, traditional MIDI five needle mouth, RTP-MIDI network mouth multiple MIDI's connection mode, can connect the majority MIDI instrument and MIDI composition software on the market, in the DMX connection aspect, has the USB, DMX card noth, Art-Net network mouth multiple connection mode, supports the majority DMX512 equipment.

[0094] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement, etc. in the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A MIDI and DMX interconversion device, characterized in that, The MCU module, a control panel connected with the MCU module, and a plurality of interface modules are included. The interface module has at least one DMX interface for DMX information communication and at least one MIDI interface for MIDI information communication, and the MCU module can edit the conversion relationship of the DMX information and the MIDI information through the control panel. When the MCU module receives any one of the DMX information or the MIDI information, the corresponding MIDI information or DMX information can be converted according to the preset conversion relationship.

2. The MIDI and DMX interconversion device of claim 1, wherein, The control panel includes a display screen, a power switch, and a plurality of adjustment switches. The adjustment switches are used to edit the conversion relationship of the DMX information and the MIDI information.

3. The MIDI and DMX interconversion device of claim 1, wherein, The interface module includes front-end interfaces and rear-end interfaces. The front-end interfaces are provided with four DMX output interfaces or DMX input interfaces. The rear-end interfaces are provided with four interfaces, namely, a MIDIOUT interface, a MIDIIN interface, a USB interface, and a DC IN interface.

4. The MIDI and DMX interconversion device of claim 3, wherein, A MIDIIN circuit is further connected between the MIDIIN interface and the MCU module. The MIDIIN circuit includes a resistor R1, a resistor R2, a diode D2, a capacitor C5, and an optocoupler U6. The first end of the optocoupler U6 is connected to the fourth pin of the MIDIIN interface in series with the resistor R2, the third end of the optocoupler U6 is connected to the fifth pin of the MIDIIN interface, the fourth end of the optocoupler U6 is grounded, the fifth end of the optocoupler U6 is connected to a 3.3V power supply in series with the resistor R1, the sixth end of the optocoupler U6 is connected to the 3.3V power supply, one end of the capacitor C5 is connected between the resistor R1 and the 3.3V power supply, the other end of the capacitor C5 is grounded, and the RX0 pin of the MCU module is connected between the resistor R1 and the fifth end of the optocoupler U6.

5. The MIDI and DMX interconversion device of claim 3, wherein, A MIDIOUT circuit is further connected between the MIDIOUT interface and the MCU module. The MIDIOUT circuit includes a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C8, a transistor Q1, and a transistor Q2. The collector of the transistor Q1 is connected to a 5V power supply in series with the resistor R3, the base of the transistor Q1 is connected to the TX0 pin of the MCU module in series with the resistor R6, the emitter of the transistor Q1 is grounded, the collector of the transistor Q2 is connected to the fifth pin of the MIDI OUT interface in series with the resistor R4, the base of the transistor Q2 is connected between the collector of the transistor Q1 and the resistor R3, the emitter of the transistor Q2 is grounded, the fourth pin of the MIDIOUT interface is connected to a 5V power supply in series with the resistor R5, the second pin of the MIDIOUT interface is grounded, one end of the capacitor C8 is connected between the resistor R5 and the 5V power supply, and the other end of the capacitor C8 is grounded.

6. The MIDI and DMX interconversion device of claim 3, wherein, The DMX circuit is connected with the DMX output interface or DMX input interface; The DMX circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, capacitor C11, capacitor C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16, bidirectional diode D3, bidirectional diode D4, bidirectional diode D5, optocoupler U7, optocoupler U8, optocoupler U9, communication chip IC1, connector P6; The first end of the optocoupler U7 is connected to a 5V power supply, the third end of the optocoupler U7 is connected to the RO pin of the communication chip IC1 after being connected in series with the resistance R8, the fourth end of the optocoupler U7 is grounded, the fifth end of the optocoupler U7 is connected to the DMX1-RX pin of the DMX output interface or DMX input interface, the sixth end of the optocoupler U7 is connected to a 3.3V power supply, one end of the resistance R7 is connected between the sixth end of the optocoupler U7 and the 3.3V power supply, the other end of the resistance R7 is connected between the DMX1-RX pin of the DMX output interface or DMX input interface and the fifth end of the optocoupler U7, one end of the capacitor C11 is connected between the sixth end of the optocoupler U7 and the 3.3V power supply, and the other end of the capacitor C11 is grounded; The first end of the optocoupler U8 is connected to a 3.3V power supply, the third end of the optocoupler U8 is connected to the DMX1-TX pin of the DMX output interface or DMX input interface after being connected in series with the resistance R15, the fourth end of the optocoupler U8 is grounded, the fifth end of the optocoupler U8 is connected to a 5V power supply after being connected in series with the resistance R10, the sixth end of the optocoupler U8 is connected between the resistance R10 and the 5V power supply, one end of the capacitor C14 is connected between the first end of the optocoupler U8 and the 3.3V power supply, the other end of the capacitor C14 is grounded, one end of the capacitor C13 is connected between the resistance R10 and the 5V power supply, the other end of the capacitor C13 is grounded, and the DI pin of the communication chip IC1 is connected between the fifth end of the optocoupler U8 and the resistance R10; The first end of the optocoupler U9 is connected to a 3.3V power supply, the third end of the optocoupler U9 is connected to the DMX1-EN pin of the DMX output interface or DMX input interface after being connected in series with the resistance R17, the fourth end of the optocoupler U9 is grounded, the fifth end of the optocoupler U9 is connected to a 5V power supply after being connected in series with the resistance R11, the sixth end of the optocoupler U8 is connected to a 5V power supply, one end of the capacitor C15 is connected between the first end of the optocoupler U9 and the 3.3V power supply, the other end of the capacitor C15 is grounded, one end of the capacitor C16 is connected between the sixth end of the optocoupler U9 and the 5V power supply, the other end of the capacitor C16 is grounded, and the RE pin and DE pin of the communication chip IC1 are both connected between the resistance R11 and the fifth end of the optocoupler U9. One end of the resistor R16 is connected to a 5V power supply, the other end of the resistor R16 is connected to the ground through the resistor R13 and the resistor R9 in sequence, the VCC pin of the communication chip IC1 is connected to a 5V power supply, the B pin of the communication chip IC1 is connected between the resistor R9 and the resistor R13, the A pin of the communication chip IC1 is connected between the resistor R13 and the resistor R16, the GND pin of the communication chip IC1 is grounded, the first end of the connector P6 is grounded, the second end of the connector P6 is connected between the resistor R9 and the resistor R13 through the resistor R12 in series, the third end of the connector P6 is connected between the resistor R13 and the resistor R16 through the resistor R14 in series, one end of the diode D3 is connected between the resistor R12 and the second end of the connector P6, the other end of the diode D3 is connected between the resistor R14 and the third end of the connector P6, one end of the diode D4 is connected between the resistor R12 and the second end of the connector P6, the other end of the diode D4 is grounded, one end of the diode D5 is connected between the first end of the connector P6 and the ground, the other end of the diode D5 is connected between the third end of the connector P6 and the resistor R14.

7. The MIDI and DMX interconversion device of claim 3, wherein, A DC power supply circuit connected with the DCIN interface is further included; The DC power supply circuit includes: resistor R19, resistor R19, resistor R20, resistor R21, resistor R22, resistor R23, resistor R24, capacitor C17, capacitor C18, capacitor C19, capacitor C20, capacitor C21, capacitor C24, diode D6, diode D7, inductor L1, field effect transistor M1, triode Q3, power switch S1, joint J1, power management chip U10; The IN pin of the power management chip U10 is connected to the first end of the connector J1, the EN pin of the power management chip U10 is connected to the IN pin of the power management chip U10 and the first end of the connector J1 in series after being connected to the ground through the resistor R18, the GND pin of the power management chip U10 is grounded, the LX pin of the power management chip is connected to the 5V power source in series after being connected to the inductor L1 and the field effect transistor M1 in series, one end of the resistor R19 is connected to the inductor L1 and the field effect transistor M1, the other end of the resistor R19 is grounded after being connected to the resistor R21 in series, the FB pin of the power management chip U10 is connected to the resistor R19 and the resistor R21, and the capacitor C20 connected to the inductor L1 and the field effect transistor M1 in series is connected to the FB pin of the power management chip U10, the second end and the third end of the connector J1 are grounded, one end of the capacitor C18 and the capacitor C19 is connected to the IN pin of the power management chip U10 and the first end of the connector J1, the other end of the capacitor C18 and the capacitor C19 is grounded, one end of the capacitor C21 and the capacitor C24 is connected to the inductor L1 and the field effect transistor M1, and the other end of the capacitor C21 and the capacitor C24 is grounded. The collector of the triode Q3 is connected to the control end of the field effect transistor M1 in series after being connected to the resistor R22, the emitter of the triode Q3 is grounded, the base of the triode Q3 is connected to the PWR-CTL pin of the MCU module in series after being connected to the resistor R23, one end of the resistor R20 is connected to the inductor L1 and the field effect transistor M1, the other end of the resistor R20 is connected to the control end of the field effect transistor M1 and the resistor R22, one end of the resistor R24 is connected to the base of the triode Q3 and the resistor R23, the other end of the resistor R24 is grounded, the positive electrode of the diode D6 is connected to the resistor R22 and the collector of the triode Q3, the negative electrode of the diode D6 is connected to the negative electrode of the diode D7, the positive electrode of the diode D7 is connected to the PWR-DET pin of the MCU module, one end of the power switch S1 is connected to the negative electrode of the diode D6 and the negative electrode of the diode D7, and the other end of the power switch S1 is grounded.

8. The MIDI and DMX interconversion device of claim 3, wherein, A DMX isolation module is connected in series between each of the DMX output interface or the DMX input interface and the MCU module; The DMX isolation module has at least an isolation chip, the D-RX pin of the isolation chip is connected to the RX pin of the MCU module, the D-TX pin of the isolation chip is connected to the TX pin of the MCU module, the D-EN pin of the isolation chip is connected to the EN pin of the MCU module, and the DMX-A pin, the DMX-B pin and the D-GND pin of the isolation chip are respectively connected to the corresponding terminals of the DMX output interface or the DMX input interface.

9. The MIDI and DMX interconversion device of claim 3, wherein, A DMX isolation power supply arranged in the MCU module is further included. The DMX isolation power supply comprises: a resistor R25, an inductor L2, an inductor L3, a capacitor C25, a capacitor C26, a light emitting diode D8, and a power supply chip U12; The VIN pin of the power supply chip U12 is connected in series with the inductor L3 and then connected to a 5V power supply, the GND pin of the power supply chip U12 is grounded, the Vo pin of the power supply chip U12 is connected in series with the inductor L2 and then outputs a 5V voltage, the 0V pin of the power supply chip U12 is grounded, one end of the capacitor C25 is connected between the inductor L3 and the 5V power supply, the other end of the capacitor C25 is grounded, one end of the capacitor C26 is connected to the inductor L2, the other end of the capacitor C26 is grounded, one end of the resistor R25 is connected to the inductor L2, and the other end of the resistor R25 is connected in series with the light emitting diode D8 and then grounded.

10. The MIDI and DMX interconversion device of claim 3, wherein, Further comprising a voltage stabilizing power supply circuit arranged in the MCU module; The voltage stabilizing power supply circuit comprises: a capacitor C22, a capacitor C23, and a power management chip U11; The VIN pin of the power management chip U11 is connected to a 5V power supply, the VOUT pin of the power management chip U11 outputs a 3.3V voltage, the GND pin of the power management chip U11 is grounded, and one end of the capacitor C22 and the capacitor C23 is connected to the VOUT pin of the power management chip U11, and the other end of the capacitor C22 and the capacitor C23 is grounded.

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