CN208937956U - RDM control circuit with various feedback function - Google Patents
RDM control circuit with various feedback function Download PDFInfo
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- CN208937956U CN208937956U CN201821885936.7U CN201821885936U CN208937956U CN 208937956 U CN208937956 U CN 208937956U CN 201821885936 U CN201821885936 U CN 201821885936U CN 208937956 U CN208937956 U CN 208937956U
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Abstract
The utility model provides a kind of RDM control circuit with various feedback function, comprising: interface circuit, DMX512 control circuit, power supply circuit, multichannel output circuit, LED drive circuit, temperature sensing circuit, current detection circuit, voltage detecting circuit；DMX512 control circuit connects each LED drive circuit by multichannel output circuit by interface circuit and host computer two-way communication, DMX512 control circuit, realizes the control to LED light or lamp string；Temperature sensing circuit, current detection circuit, voltage detecting circuit feed back temperature signal, current signal and voltage signal detected to DMX512 control circuit respectively, and are further fed back by DMX512 control circuit and interface circuit to host computer.The utility model can be realized the operating status of long-range monitoring LED control circuit, and realize the long-range control to LED light string.
Description
Technical field
The utility model relates to a kind of control circuit, especially a kind of RDM control circuit with various feedback function.
Background technique
DMX is the abbreviation of Digital Multipiex.DMX512/1990 is light modulation and light control console data transmission mark
Standard is the common control protocol of recreation lamp optical arena.
DMX512/1990 is to propose that the version of most original is published in 1986 by theater technology association, U.S. USITT,
It is modified in nineteen ninety.
In LED control field, host computer is required to remotely controlling LED light string, and the control of LED light string is electric
The operating status on road, if not feeding back to host computer, when the driving of LED light string occurs abnormal, host computer can not obtain in time
Know abnormal conditions.
The existing LED control circuit for supporting DMX512 agreement does not realize RDM(remote device management toward contact) function,
For the operating status of LED control circuit, feedback not can be carried out.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of RDM control electricity with various feedback function
Road, can be realized the operating status of long-range monitoring LED control circuit, and realize the long-range control to LED light string.The utility model
The technical solution adopted is that:
A kind of RDM control circuit with various feedback function, comprising: interface circuit, DMX512 control circuit, power supply electricity
Road, multichannel output circuit, LED drive circuit, temperature sensing circuit, current detection circuit, voltage detecting circuit；
For DMX512 control circuit by interface circuit and host computer two-way communication, DMX512 control circuit is defeated by multichannel
Each LED drive circuit of circuit connection out realizes the control to LED light or lamp string；Temperature sensing circuit, current detection circuit, electricity
It presses detection circuit to feed back temperature signal, current signal and voltage signal detected to DMX512 control circuit respectively, goes forward side by side one
Step is fed back by DMX512 control circuit and interface circuit to host computer.
Specifically, interface circuit include RS485 chip U2, diode D1, D2, fuse F1, F2, resistance R1, R2, R3, R4,
R5；One end of the difference positive output end connecting resistance R1 of RS485 chip U2 simultaneously connects the second supply voltage by resistance R3；RS485 core
One end of the difference negative output terminal connecting resistance R2 of piece U2 is simultaneously connect digitally by resistance R4；Another termination fuse F1 mono- of resistance R1
End and diode D1 cathode, the anode of diode D1 connect digitally；Another one end termination fuse F2 of resistance R2 and diode D2
The anode of cathode, diode D2 connects digitally；The other end of fuse F1 and F2 are communication interface end, for connecting host computer；
The end RX of chip U1 is controlled in the receiver output termination DMX512 control circuit of RS485 chip U2；The driving of RS485 chip U2
The end TX of chip U1 is controlled in device input termination DMX512 control circuit；The receiver output enable end of RS485 chip U2 and drive
Dynamic device input enable end is connect digitally by resistance R5.
Further, DMX512 control circuit includes control chip U1, and control chip U1 uses MR-RDM06 chip.
Further, multichannel output circuit includes several channel output circuits；Each channel output circuit includes two
Concatenated resistance, a termination simulation ground of two series resistances, another terminate control chip U1's in DMX512 control circuit
One pwm signal output end；Node among two series resistances is used to connect the input terminal of a LED drive circuit.
Further, temperature sensing circuit includes a temperature detection chip U4, and temperature detection chip U4 passes through iic bus
Connect the control chip U1 in DMX512 control circuit；The data terminal SDA of U4, when terminal SCK be separately connected control chip U1's
Data transmit-receive end and Clock control end；The clock end SCK of U4 also passes through resistance R7 and connects the second supply voltage.
Further, current detection circuit includes current detecting chip U6, resistance R8, R9, R10, capacitor C7, C8；Electric current
The power supply of detection chip U6 terminates the second supply voltage, exports the one end terminating resistor R8, and for connecting DMX512 control circuit
The current detecting end of middle control chip U1；The input terminal of another termination current detecting chip U6 of resistance R8, and connect by resistance R9
Digitally；The both ends capacitor C8 connect the second supply voltage and digitally respectively；The ground connection termination simulation ground of current detecting chip U6；Electricity
Resistance R10 and capacitor C7 both ends connect respectively simulation and digitally.
Further, voltage detecting circuit includes resistance R11, R12, capacitor C9；Termination the first power supply electricity of resistance R11
Press VCC, the one end another terminating resistor R12, and the voltage detection terminal FV for connecting control chip U1 in DMX512 control circuit；
Another termination of resistance R12 is digitally；Capacitor C9 is in parallel with resistance R12.
Utility model has the advantages that the utility model can make host computer pass through RS485 bus, DMX512 bus
Two-way communication is carried out with LED control circuit, realizes Remote configuration, monitoring and management.
Support temperature real-time monitoring；
Support electric current real-time monitoring；
Support voltage real-time monitoring；
Support LED lamp on-line monitoring.
Detailed description of the invention
Fig. 1 is the electrical diagram of the utility model.
Fig. 2 is the interface circuit, DMX512 control circuit and power supply circuit schematic diagram of the utility model.
Fig. 3 is the multichannel output circuit, temperature sensing circuit, current detection circuit and voltage detecting electricity of the utility model
Road schematic diagram.
Fig. 4 is the LED drive circuit schematic diagram of the utility model.
Specific embodiment
Below with reference to specific drawings and examples, the utility model is described in further detail.
The utility model proposes a kind of RDM control circuit with various feedback function, be that one kind can pass through
The LED control circuit of DMX512/1990 agreement progress two-way communication；The realization of DMX512/1990 agreement is based on DMX512 core
Piece U1, the utility model focus on circuit part, and inside non-DMX512 chip U1, therefore DMX512/1990 agreement is not answered
This regards the emphasis of the utility model as；
The utility model includes interface circuit 10, DMX512 control circuit 20, power supply circuit 30, multichannel output circuit
40, LED drive circuit 50, temperature sensing circuit 60, current detection circuit 70, voltage detecting circuit 80；
DMX512 control circuit 20 passes through more by interface circuit 10 and host computer two-way communication, DMX512 control circuit 20
Channel output circuit 40 connects each LED drive circuit 50, realizes the control to LED light or lamp string；Temperature sensing circuit 60, electric current
Detection circuit 70, voltage detecting circuit 80 feed back temperature signal detected, current signal to DMX512 control circuit 20 respectively
And voltage signal, and further fed back by DMX512 control circuit 20 and interface circuit 10 to host computer；
As shown in Figure 2；
The power supply circuit 30 provides a first supply voltage VCC and exports after lowering and stabilizing blood pressure chip U3 pressure stabilizing
Second supply voltage, the second supply voltage is+5v in the present embodiment；
Interface circuit 10 includes RS485 chip U2, diode D1, D2, fuse F1, F2, resistance R1, R2, R3, R4, R5；
One end of the difference positive output end connecting resistance R1 of RS485 chip U2 simultaneously connects the second supply voltage by resistance R3；RS485 chip U2
Difference negative output terminal connecting resistance R2 one end and connect digitally by resistance R4；Another one end termination fuse F1 of resistance R1 and
Diode D1 cathode, the anode of diode D1 connect digitally；Another one end termination fuse F2 of resistance R2 and diode D2 cathode,
The anode of diode D2 connects digitally；The other end of fuse F1 and F2 are communication interface end, for connecting host computer；RS485 core
The receiver output end (1 foot) of piece U2 connects the end RX that chip U1 is controlled in DMX512 control circuit 20；The driving of RS485 chip U2
Device input terminal (4 foot) connects the end TX that chip U1 is controlled in DMX512 control circuit 20；The receiver output of RS485 chip U2 is enabled
End (2 foot) and driver input enable end (3 foot) are connect digitally by resistance R5；
DMX512 control circuit 20 includes control chip U1, and control chip U1 uses MR-RDM06 chip, bright auspicious by Beijing
Micron Technology Co., Ltd provide；The USITT DMX512/1990 agreement of support standard realizes RDM(remote equipment pipe simultaneously
Reason)；
As shown in figure 3, including five channel output circuits in 40 this example of multichannel output circuit；Each channel output circuit
Including two concatenated resistance, a termination of two series resistances simulates ground, controls in another termination DMX512 control circuit 20
A pwm signal output end of coremaking piece U1；It controls chip U1 to export with five road pwm signals, therefore exportable PWM1 ...
The pwm signal in five channels PWM5；Node among two series resistances is used to connect the input of a LED drive circuit 50
End；The multichannel output circuit of such structure can have hot plug defencive function；
LED drive circuit 50 is as shown in figure 4, include LED drive chip U5, U5 uses HD6619, its periphery electricity of HD6619
This part of road is more mature circuit, is repeated no more；
As shown in figure 3, temperature sensing circuit 60 includes a temperature detection chip U4, temperature detection chip U4 passes through IIC
Bus connects the control chip U1 in DMX512 control circuit 20；The data terminal SDA of U4, when terminal SCK be separately connected control core
The data transmit-receive end of piece U1 and Clock control end；The clock end SCK of U4 also passes through resistance R7 and connects the second supply voltage；Temperature detection
Commercially available suitable types can be used in chip U4, and having may be selected compared with polytypic；
Current detection circuit 70 includes current detecting chip U6, resistance R8, R9, R10, capacitor C7, C8；Current detecting chip
The MR-DC01 of the bright auspicious Micron Technology Co., Ltd in U6 model Beijing；Power supply termination the second power supply electricity of current detecting chip U6
Pressure, the one end output end (1 foot) connecting resistance R8, and for connecting the current detecting end for controlling chip U1 in DMX512 control circuit 20
FC；The input terminal of another termination current detecting chip U6 of resistance R8, and connect digitally by resistance R9；The both ends capacitor C8 connect respectively
Second supply voltage and digitally；The ground connection termination simulation ground of current detecting chip U6；The both ends of resistance R10 and capacitor C7 difference
With connecing simulation and digitally；
Voltage detecting circuit 80 includes resistance R11, R12, capacitor C9；A first supply voltage VCC of termination of resistance R11,
The one end another terminating resistor R12, and for connecting the voltage detection terminal FV for controlling chip U1 in DMX512 control circuit 20；Resistance
Another termination of R12 is digitally；Capacitor C9 is in parallel with resistance R12.
It should be noted last that the above specific embodiment is only to illustrate the technical solution of the utility model rather than limits
System, although the utility model is described in detail referring to example, those skilled in the art should understand that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (7)
1. a kind of RDM control circuit with various feedback function characterized by comprising interface circuit (10), DMX512 control
Circuit (20), power supply circuit (30), multichannel output circuit (40), LED drive circuit (50), temperature sensing circuit (60), electricity
Current detection circuit (70), voltage detecting circuit (80)；
DMX512 control circuit (20) is passed through by interface circuit (10) and host computer two-way communication, DMX512 control circuit (20)
Multichannel output circuit (40) connects each LED drive circuit (50)；Temperature sensing circuit (60), current detection circuit (70), electricity
Detection circuit (80) are pressed to feed back temperature signal, current signal and voltage letter detected to DMX512 control circuit (20) respectively
Number, and further fed back by DMX512 control circuit (20) and interface circuit (10) to host computer.
2. as described in claim 1 with the RDM control circuit of various feedback function, which is characterized in that
Interface circuit (10) includes RS485 chip U2, diode D1, D2, fuse F1, F2, resistance R1, R2, R3, R4, R5；
One end of the difference positive output end connecting resistance R1 of RS485 chip U2 simultaneously connects the second supply voltage by resistance R3；RS485 chip U2
Difference negative output terminal connecting resistance R2 one end and connect digitally by resistance R4；Another one end termination fuse F1 of resistance R1 and
Diode D1 cathode, the anode of diode D1 connect digitally；Another one end termination fuse F2 of resistance R2 and diode D2 cathode,
The anode of diode D2 connects digitally；The other end of fuse F1 and F2 are communication interface end, for connecting host computer；RS485 core
The end RX of control chip U1 in receiver output termination DMX512 control circuit (20) of piece U2；The driver of RS485 chip U2
The end TX of control chip U1 in input termination DMX512 control circuit (20)；RS485 chip U2 receiver output enable end and
Driver input enable end is connect digitally by resistance R5.
3. as described in claim 1 with the RDM control circuit of various feedback function, which is characterized in that
DMX512 control circuit (20) includes control chip U1, and control chip U1 uses MR-RDM06 chip.
4. as described in claim 1 with the RDM control circuit of various feedback function, which is characterized in that
Multichannel output circuit (40) includes several channel output circuits；Each channel output circuit includes two concatenated electricity
Resistance, a termination simulation ground of two series resistances, another one for terminating control chip U1 in DMX512 control circuit (20)
Pwm signal output end；Node among two series resistances is used to connect the input terminal of a LED drive circuit (50).
5. as described in claim 1 with the RDM control circuit of various feedback function, which is characterized in that
Temperature sensing circuit (60) includes a temperature detection chip U4, which is connected by iic bus
Control chip U1 in DMX512 control circuit (20)；The data terminal SDA of U4, when terminal SCK be separately connected control chip U1's
Data transmit-receive end and Clock control end；The clock end SCK of U4 also passes through resistance R7 and connects the second supply voltage.
6. as described in claim 1 with the RDM control circuit of various feedback function, which is characterized in that
Current detection circuit (70) includes current detecting chip U6, resistance R8, R9, R10, capacitor C7, C8；Current detecting chip U6
Power supply terminate the second supply voltage, export the one end terminating resistor R8, and for connecting control in DMX512 control circuit (20)
The current detecting end of chip U1；The input terminal of another termination current detecting chip U6 of resistance R8, and connect digitally by resistance R9；
The both ends capacitor C8 connect the second supply voltage and digitally respectively；The ground connection termination simulation ground of current detecting chip U6；Resistance R10 and
The both ends of capacitor C7 connect respectively simulation and digitally.
7. as described in claim 1 with the RDM control circuit of various feedback function, which is characterized in that
Voltage detecting circuit (80) includes resistance R11, R12, capacitor C9；A first supply voltage VCC of termination of resistance R11, separately
One one end terminating resistor R12, and the voltage detection terminal FV for connecting control chip U1 in DMX512 control circuit (20)；Resistance
Another termination of R12 is digitally；Capacitor C9 is in parallel with resistance R12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885936.7U CN208937956U (en) | 2018-11-14 | 2018-11-14 | RDM control circuit with various feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885936.7U CN208937956U (en) | 2018-11-14 | 2018-11-14 | RDM control circuit with various feedback function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208937956U true CN208937956U (en) | 2019-06-04 |
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ID=66727587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821885936.7U Active CN208937956U (en) | 2018-11-14 | 2018-11-14 | RDM control circuit with various feedback function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208937956U (en) |
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2018
- 2018-11-14 CN CN201821885936.7U patent/CN208937956U/en active Active
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