CN109462395A - Interface multiplexes conversion circuit and multiplexing conversion method - Google Patents
Interface multiplexes conversion circuit and multiplexing conversion method Download PDFInfo
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- CN109462395A CN109462395A CN201811619934.8A CN201811619934A CN109462395A CN 109462395 A CN109462395 A CN 109462395A CN 201811619934 A CN201811619934 A CN 201811619934A CN 109462395 A CN109462395 A CN 109462395A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
- H03K19/017536—Interface arrangements using opto-electronic devices
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Abstract
The present invention relates to a kind of interface multiplexing conversion circuit and its working methods, and wherein this interface multiplexing conversion circuit includes: multiplex interface, and the control being electrically connected with the multiplex interface and communication multiplex circuit；Wherein the multiplex interface includes: several ac/dc motor speed gear control signal interfaces；The control and communication multiplex circuit are suitable for corresponding exchange/DC generator speed gear control signal interface input signal being converted to corresponding gear signal, to be input to processor module.The present invention is controlled by multiplex interface and cooperation and communication multiplex circuit, communicating circuit and PWM conversion circuit realize to convert ac/dc motor speed gear control signal, communication signal, DC speed regulation voltage, FG feedback signal, external PWM signal, digital signal, analog signal to processor module and receive signal, circuit structure has been simplified, circuit cost has been saved.
Description
Technical field
The present invention relates to Motor Control Fields, and in particular to a kind of interface multiplexing conversion circuit and multiplexing conversion
Method.
Background technique
Motor, which rotates, be unable to do without motor control, and motor control depends on circuit for controlling motor, at present circuit for controlling motor
Function is very single, and the interface circuits such as DC control, exchange control, communication are divided into corresponding independent circuits, in practical applications,
The combination of above-mentioned each independent circuits increases circuit board volume, and also adds production cost.
Therefore, in order to solve the above-mentioned technical problem, need to design a kind of interface multiplexing conversion circuit and multiplexing
Conversion method.
Summary of the invention
The object of the present invention is to provide a kind of interface multiplexing conversion circuit and multiplexing conversion methods.
In order to solve the above-mentioned technical problems, the present invention provides a kind of interfaces to multiplex conversion circuit, comprising:
Multiplex interface, and the control being electrically connected with the multiplex interface and communication multiplex circuit；Wherein
The multiplex interface includes: several ac/dc motor speed gear control signal interfaces；
The control and communication multiplex circuit are suitable for will accordingly exchange/DC generator speed gear control signal interface input
Signal is converted to corresponding gear signal, to be input to processor module.
Further, the interface multiplexes conversion circuit further include: communicating circuit；Wherein
The multiplex interface further include: communication signal interface；
The communicating circuit is suitable for the communication signal that communication signal interface accesses being converted to corresponding rs 232 serial interface signal, and passes through
Control and communication multiplex circuit are input to processor module.
Further, the control and communication multiplex circuit include: the first, second, and third gear signal conversion circuit；Its
In
First gear signal conversion circuit includes multiple input terminals, the first optical coupling module；Wherein
The first, second, and third input terminal respectively corresponds ac/dc motor in the first gear signal conversion circuit
1,4 and 5 feet of speed stage control signaling interface；
The first input end of the first gear signal conversion circuit connects an input resistance R94, the connection of the second input terminal
Forward-biased diodes D26 and input resistance R98 and third input terminal connection forward-biased diodes D29 and input resistance
It is in parallel after R101, and pass through the anode that resistance R95 accesses to illuminator in the first optical coupling module；
The output end of first optical coupling module is connected to the gear control terminal of processor module by pull-up resistor R91；
Second gear signal conversion circuit includes multiple input terminals, the second optical coupling module；Wherein
The first, second input terminal and ac/dc motor speed is respectively corresponded in the second gear signal conversion circuit
2,4 feet of gear control signal interface；
The first input end of the second gear signal conversion circuit connects an input resistance R105, the connection of the second input terminal
It is in parallel after forward-biased diodes D30 and input resistance R108, and access in the second optical coupling module and shine by resistance R106
The anode of body；
The output end of second optical coupling module is connected to the gear control terminal of processor module by pull-up resistor R103；
Third gear signal conversion circuit includes multiple input terminals, third optical coupling module；Wherein
The first, second input terminal respectively corresponds ac/dc motor speed shelves in the third gear signal conversion circuit
3,5 feet of position control signaling interface；
The first input end of the third gear signal conversion circuit connects an input resistance R111, the connection of the second input terminal
It is in parallel after forward-biased diodes D32 and input resistance R113, and access in third optical coupling module and shine by resistance R112
The anode of body；
The output end of the third optical coupling module is connected to the gear control terminal of processor module by pull-up resistor R110；
When the second input terminal in the first, second gear signal conversion circuit accesses input AC/direct current generator speed simultaneously
When spending gear control signal, the first, second gear signal conversion circuit generates corresponding gear control signal to processor die
The corresponding gear control terminal of block；
When second in the third input terminal and third gear signal conversion circuit in the first gear signal conversion circuit is defeated
When entering end while accessing input AC/DC generator speed gear control signal, described first, third gear signal conversion circuit
Generate the corresponding gear control terminal of corresponding gear control signal to processor module.
Further, the rs 232 serial interface signal includes: that serial ports read signal, serial ports write signal, serial ports enable signal and serial ports are write
Pull up signal；Wherein
The serial ports writes the anode that pull up signal is connected to illuminator in the first optical coupling module, in first optical coupling module
The cathode of illuminator connects serial ports read signal, and the output end of first optical coupling module is additionally coupled to the serial ports number of processor module
According to receiving end；
The communication interface circuit includes: the four, the 5th optical coupling modules；
The anode of illuminator accesses high level in 4th optical coupling module, and cathode is connected to the serial ports of processor module
Enabled output end；
The output end of 4th optical coupling module is connected to ac/dc motor speed by a reversed biased diodes D34
Spend 3 feet of gear control signal interface；
Illuminator anode accesses high level in 5th optical coupling module, and cathode is connected to the serial ports number of processor module
According to transmitting terminal；And the output end of the 5th optical coupling module is connected to 3 foot by a reversed biased diodes D41；
When 3 foot accesses FG feedback signal, the output end of the 4th optical coupling module is suitable for the enabled letter of output serial ports
Number access to communicating circuit；And the 5th optical coupling module output end be suitable for output serial ports write signal access to communicating circuit.
Further, the multiplex interface further include: DC speed regulation voltage interface；
The interface multiplexing conversion circuit further includes PWM conversion circuit；
The PWM conversion circuit is adapted to DC speed regulation voltage interface so that DC speed regulation voltage is converted to corresponding PWM
Signal；
The PWM conversion circuit includes: comparison circuit, charge-discharge circuit and driving circuit；Wherein
The charge-discharge circuit is suitable for generating charge and discharge electric signal, and is compared by comparing circuit with DC speed regulation voltage
Compared with output pwm signal.
Further, 1 foot in the multiplex interface is also used as digital signal incoming end, and first gear signal turns
Circuit is changed to be suitable for digital signal being input to processor module through the first optical coupling module；
2 feet in the multiplex interface are also used as external PWM signal incoming end and input end of analog signal, in conduct
When input end of analog signal, analog signal is input to by processor module by the linearly interval of the second optical coupling module；And
3 feet in the multiplex interface are also used as FG feedback signal incoming end, and are converted by third gear signal
FG feedback signal is input to processor module by circuit.
Another aspect, the present invention also provides a kind of multiplexing conversion methods, comprising:
One multiplex interface is set, to receive several ac/dc motor speed gear control signals, and/or communication
Signal and/or DC speed regulation voltage and/or FG feedback signal and/or external PWM signal and/or digital signal and/or mould
Quasi- signal, and above-mentioned signal is converted to processor module and receives signal.
Further, the multiplexing conversion method is suitable for multiplexing conversion circuit for above-mentioned letter using the interface
Number conversion to processor module receive signal.
The invention has the advantages that interface multiplexing conversion circuit and multiplexing conversion method of the invention passes through
Multiplex interface and cooperation control and communication multiplex circuit, communicating circuit and PWM conversion circuit, which realize, to be exchanged/and it is straight
Galvanic electricity machine speed stage control signal, communication signal, DC speed regulation voltage, FG feedback signal, external PWM signal, digital signal,
Analog signal is converted to processor module and receives signal, has simplified circuit structure, has saved circuit cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the pin schematic diagram of multiplex interface of the invention；
Fig. 2 is the functional block diagram of interface multiplexing conversion circuit of the invention；
Fig. 3 is the circuit diagram of communicating circuit of the invention；
Fig. 4 is the first gear signal conversion circuit of the invention；
Fig. 5 is the second gear signal conversion circuit of the invention；
Fig. 6 is third gear signal conversion circuit of the invention；
Fig. 7 is communication interface circuit of the invention.
In figure: the first optical coupling module U14, the second optical coupling module U17, third optical coupling module U18, the 4th optical coupling module U20,
5th optical coupling module U21.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Fig. 1 is the pin schematic diagram of multiplex interface of the invention；
Fig. 2 is the functional block diagram of interface multiplexing conversion circuit of the invention；
As depicted in figs. 1 and 2, a kind of interface multiplexing conversion circuit is present embodiments provided, comprising: multiplexing connects
Mouthful, and the control being electrically connected with the multiplex interface and communication multiplex circuit；Wherein the multiplex interface includes:
Several ac/dc motor speed gear control signal interfaces；The control and communication multiplex circuit be suitable for accordingly exchanging/and it is straight
Galvanic electricity machine speed stage control signaling interface input signal is converted to corresponding gear signal, to be input to processor module.
Wherein, as shown in Figure 1 about the pin definitions of multiplex interface, it is merely illustrative of in the present embodiment, and
Non-limiting above-mentioned pin distribution.
Fig. 3 is the circuit diagram of communicating circuit of the invention；
The interface multiplexes conversion circuit further include: communicating circuit；The wherein multiplex interface further include: logical
Interrogate signaling interface；The communicating circuit is suitable for the communication signal that communication signal interface accesses being converted to corresponding rs 232 serial interface signal, and
Processor module is input to by controlling and communicating multiplex circuit.
The communicating circuit includes 485 signal conversion chip U19, can be connect from 10 feet of multiplex interface and 11 feet
Enter 485 signals.
In the present embodiment, the pin numbering of several ac/dc motor speed gear control signal interfaces and multichannel are multiple
It is consistent with the pin numbering of interface.
Fig. 4 is the first gear signal conversion circuit of the invention；
Fig. 5 is the second gear signal conversion circuit of the invention；
Fig. 6 is third gear signal conversion circuit of the invention；
As shown in Figures 4 to 6, the control and communication multiplex circuit include: the conversion of the first, second, and third gear signal
Circuit；Wherein the first gear signal conversion circuit includes multiple input terminals, the first optical coupling module U14；Wherein first gear
The first, second, and third input terminal respectively corresponds ac/dc motor speed gear control signal interface in signal conversion circuit
1,4 and 5 feet；
The first input end of the first gear signal conversion circuit connects an input resistance R94, the connection of the second input terminal
Forward-biased diodes D26 and input resistance R98 and third input terminal connection forward-biased diodes D29 and input resistance
It is in parallel after R101, and pass through the anode that resistance R95 accesses to illuminator in the first optical coupling module U14；
The output end of the first optical coupling module U14 is controlled by the gear that pull-up resistor R91 is connected to processor module
End；Second gear signal conversion circuit includes multiple input terminals, the second optical coupling module U17；Wherein second gear position signal turns
It changes the first, second input terminal in circuit and respectively corresponds 2,4 feet of ac/dc motor speed gear control signal interface；Institute
The first input end for stating the second gear signal conversion circuit connects an input resistance R105, and the second input terminal connects forward bias two
It is in parallel after pole pipe D30 and input resistance R108, and pass through the sun that resistance R106 accesses to illuminator in the second optical coupling module U17
Pole；The output end of the second optical coupling module U17 is connected to the gear control terminal of processor module by pull-up resistor R103；
Third gear signal conversion circuit includes multiple input terminals, third optical coupling module U18；The wherein third gear signal conversion electricity
The first, second input terminal respectively corresponds 3,5 feet of ac/dc motor speed gear control signal interface in road；The third
The first input end of gear signal conversion circuit connects an input resistance R111, and the second input terminal connects forward-biased diodes
It is in parallel after D32 and input resistance R113, and pass through the anode that resistance R112 accesses to illuminator in third optical coupling module U18；Institute
The output end for stating third optical coupling module U18 is connected to the gear control terminal of processor module by pull-up resistor R110；When
One, the second input terminal in the second gear signal conversion circuit accesses input AC/DC generator speed gear control letter simultaneously
Number when, the first, second gear signal conversion circuit generates the corresponding gear of corresponding gear control signal to processor module
Control terminal；When the second input in the third input terminal and third gear signal conversion circuit in the first gear signal conversion circuit
When holding while accessing input AC/DC generator speed gear control signal, described first, the life of third gear signal conversion circuit
At the corresponding gear control terminal of corresponding gear control signal to processor module.
1,2 and 3 feet of corresponding ac/dc motor speed gear control signal interface can receive the tune of 1,2,3 gears
Fast signal, control motor are adjusted the speed, and can be by the second input terminal of the first, second gear signal conversion circuit simultaneously
It accesses 4 feet (speed-regulating signal of the 4th gear), the first, second gear signal conversion circuit generates corresponding control level, processing simultaneously
Device module may determine that speed regulation gear according to above-mentioned level；Similarly, first and third gear signal conversion circuit can connect simultaneously
Enter 5 feet (speed-regulating signal of the 5th gear), first and third gear signal conversion circuit generate corresponding control level, processing simultaneously
Device module may determine that speed regulation gear according to above-mentioned level.
Referring back to Fig. 3, Fig. 4, the rs 232 serial interface signal include: serial ports read signal RS485_R, serial ports write signal RS485_D,
Serial ports enable signal RS485_EN and serial ports write pull up signal RS485_R_Up；Wherein the serial ports writes pull up signal RS485_
R_Up is connected to the anode of illuminator in the first optical coupling module U14, the cathode connection of illuminator in the first optical coupling module U14
Serial ports read signal RS485_R, the serial data that the output end of the first optical coupling module U14 is additionally coupled to processor module connect
Receiving end Usart_Rx.
Fig. 7 is communication interface circuit of the invention；
As shown in fig. 7, the communication interface circuit includes: the four, the 5th optical coupling modules；
The anode of illuminator accesses high level in the 4th optical coupling module U20, and cathode is connected to processor module
Serial ports enables output end；The output end of the 4th optical coupling module U20 by a reversed biased diodes D34 be connected to exchange/
3 feet of DC generator speed gear control signal interface；Illuminator anode accesses high level in the 5th optical coupling module U21,
Its cathode is connected to the serial data transmitting terminal of processor module；And the output end of the 5th optical coupling module U21 passes through one
Reversed biased diodes D41 is connected to 3 foot；When 3 foot accesses FG feedback signal (FG_ReadFromMoter),
The output end of the 4th optical coupling module U20 is suitable for output serial ports enable signal and accesses to communicating circuit；And the 5th optocoupler mould
The output end of block U21 is suitable for output serial ports write signal Usart_Tx and accesses to communicating circuit.
As shown in Figure 1, the multiplex interface further include: DC speed regulation voltage interface；The interface multiplexing turns
Changing circuit further includes PWM conversion circuit；The PWM conversion circuit is adapted to DC speed regulation voltage interface, and (i.e. multiplexing connects
7 feet of mouth) DC speed regulation voltage is converted to corresponding pwm signal.
PWM conversion circuit mentioned by the present embodiment has been disclosed in many documents of the prior art, and the application is not related to
Improvement is made to the PWM conversion circuit itself.
In the present embodiment, as shown in Figure 1,1 foot in the multiplex interface is also used as digital signal incoming end, this
Digital signal can be WriteToMotor, and the first gear signal conversion circuit is suitable for digital signal through the first optocoupler mould
Block U14 is input to processor module；2 feet in the multiplex interface are also used as external PWM signal incoming end and simulation letter
Analog signal is input to when as input end of analog signal by the linearly interval of the second optical coupling module U17 by number input terminal
Processor module；And 3 feet in the multiplex interface are also used as FG feedback signal incoming end, and are believed by third gear
FG feedback signal is input to processor module by number conversion circuit.
Therefore, this interface multiplexing conversion circuit can satisfy several ac/dc motor speed gear control signals,
Communication signal, DC speed regulation voltage, FG feedback signal, external PWM signal, digital signal, analog signal are converted to processor die
Block receives signal.
The present embodiment additionally provides a kind of multiplexing conversion method, comprising: one multiplex interface of setting, if to receive
Dry ac/dc motor speed gear control signal and/or communication signal and/or DC speed regulation voltage and/or FG feedback letter
Number and/or external PWM signal and/or digital signal and/or analog signal, and above-mentioned signal is converted to processor module
Receive signal.
In the present embodiment, multiplexing conversion method is suitable for multiplexing conversion circuit by interface and realize above-mentioned letter
Number conversion to processor module receive signal.
In conclusion interface multiplexing conversion circuit of the invention and multiplexing conversion method are connect by multiplexing
Mouth and cooperation control and communication multiplex circuit, communicating circuit and PWM conversion circuit are realized ac/dc motor speed
Gear control signal, communication signal, DC speed regulation voltage, FG feedback signal, external PWM signal, digital signal, analog signal turn
It shifts to processor module and receives signal, simplified circuit structure, saved circuit cost.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (8)
1. a kind of interface multiplexes conversion circuit characterized by comprising
Multiplex interface, and the control being electrically connected with the multiplex interface and communication multiplex circuit；Wherein
The multiplex interface includes: several ac/dc motor speed gear control signal interfaces；
The control and communication multiplex circuit are suitable for will corresponding exchange/DC generator speed gear control signal interface input signal
Corresponding gear signal is converted to, to be input to processor module.
2. interface according to claim 1 multiplexes conversion circuit, which is characterized in that
The interface multiplexes conversion circuit further include: communicating circuit；Wherein
The multiplex interface further include: communication signal interface；
The communicating circuit is suitable for being converted to the communication signal that communication signal interface accesses corresponding rs 232 serial interface signal, and by control
And communication multiplex circuit is input to processor module.
3. interface according to claim 2 multiplexes conversion circuit, which is characterized in that
The control and communication multiplex circuit include: the first, second, and third gear signal conversion circuit；Wherein
First gear signal conversion circuit includes multiple input terminals, the first optical coupling module；Wherein
The first, second, and third input terminal respectively corresponds ac/dc motor speed in the first gear signal conversion circuit
1,4 and 5 feet of gear control signal interface；
The first input end of the first gear signal conversion circuit connects an input resistance R94, and the connection of the second input terminal is positive
It biases diode D26 and input resistance R98 and third input terminal connects forward-biased diodes D29 and input resistance R101
It is in parallel afterwards, and pass through the anode that resistance R95 accesses to illuminator in the first optical coupling module；
The output end of first optical coupling module is connected to the gear control terminal of processor module by pull-up resistor R91；
Second gear signal conversion circuit includes multiple input terminals, the second optical coupling module；Wherein
The first, second input terminal and ac/dc motor speed gear is respectively corresponded in the second gear signal conversion circuit
Control 2,4 feet of signaling interface；
The first input end of the second gear signal conversion circuit connects an input resistance R105, and the connection of the second input terminal is positive
It is in parallel after biasing diode D30 and input resistance R108, and illuminator in the second optical coupling module is accessed to by resistance R106
Anode；
The output end of second optical coupling module is connected to the gear control terminal of processor module by pull-up resistor R103；
Third gear signal conversion circuit includes multiple input terminals, third optical coupling module；Wherein
The first, second input terminal respectively corresponds ac/dc motor speed gear control in the third gear signal conversion circuit
3,5 feet of signaling interface processed；
The first input end of the third gear signal conversion circuit connects an input resistance R111, and the connection of the second input terminal is positive
It is in parallel after biasing diode D32 and input resistance R113, and illuminator in third optical coupling module is accessed to by resistance R112
Anode；
The output end of the third optical coupling module is connected to the gear control terminal of processor module by pull-up resistor R110；
When the second input terminal in the first, second gear signal conversion circuit accesses input AC/DC generator speed shelves simultaneously
When the control signal of position, the first, second gear signal conversion circuit generates corresponding gear control signal to processor module
Corresponding gear control terminal；
The second input terminal in the third input terminal and third gear signal conversion circuit in the first gear signal conversion circuit
When accessing input AC/DC generator speed gear control signal simultaneously, described first, the generation of third gear signal conversion circuit
Corresponding gear control signal to processor module corresponding gear control terminal.
4. interface according to claim 3 multiplexes conversion circuit, which is characterized in that
The rs 232 serial interface signal includes: that serial ports read signal, serial ports write signal, serial ports enable signal and serial ports write pull up signal；Its
In
The serial ports writes the anode that pull up signal is connected to illuminator in the first optical coupling module, shines in first optical coupling module
The cathode of body connects serial ports read signal, and the serial data that the output end of first optical coupling module is additionally coupled to processor module connects
Receiving end；
The communication interface circuit includes: the four, the 5th optical coupling modules；
The anode of illuminator accesses high level in 4th optical coupling module, and the serial ports that cathode is connected to processor module is enabled
Output end；
The output end of 4th optical coupling module is connected to ac/dc motor speed shelves by a reversed biased diodes D34
3 feet of position control signaling interface；
Illuminator anode accesses high level in 5th optical coupling module, and cathode is connected to the serial data hair of processor module
Sending end；And the output end of the 5th optical coupling module is connected to 3 foot by a reversed biased diodes D41；
When 3 foot accesses FG feedback signal, the output end of the 4th optical coupling module is suitable for output serial ports enable signal and connects
Enter to communicating circuit；And the 5th optical coupling module output end be suitable for output serial ports write signal access to communicating circuit.
5. interface according to claim 4 multiplexes conversion circuit, which is characterized in that
The multiplex interface further include: DC speed regulation voltage interface；
The interface multiplexing conversion circuit further includes PWM conversion circuit；
The PWM conversion circuit is adapted to DC speed regulation voltage interface so that DC speed regulation voltage is converted to corresponding pwm signal.
6. interface according to claim 5 multiplexes conversion circuit, which is characterized in that
1 foot in the multiplex interface is also used as digital signal incoming end, and the first gear signal conversion circuit is suitable for
Digital signal is input to processor module through the first optical coupling module；
2 feet in the multiplex interface are also used as external PWM signal incoming end and input end of analog signal, as simulation
When signal input part, analog signal is input to by processor module by the linearly interval of the second optical coupling module；And
3 feet in the multiplex interface are also used as FG feedback signal incoming end, and pass through third gear signal conversion circuit
FG feedback signal is input to processor module.
7. a kind of multiplexing conversion method characterized by comprising
One multiplex interface is set, to receive several ac/dc motor speed gear control signals and/or communication signal,
And/or DC speed regulation voltage and/or FG feedback signal and/or external PWM signal and/or digital signal, and/or simulation letter
Number, and above-mentioned signal is converted to processor module and receives signal.
8. multiplexing conversion method according to claim 7, which is characterized in that
The multiplexing conversion method is suitable for multiplexing conversion circuit using such as the described in any item interfaces of claim 1-8
Above-mentioned signal is converted to processor module and receives signal.
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