CN205829446U - A kind of power interface circuit - Google Patents
A kind of power interface circuit Download PDFInfo
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- CN205829446U CN205829446U CN201620500120.2U CN201620500120U CN205829446U CN 205829446 U CN205829446 U CN 205829446U CN 201620500120 U CN201620500120 U CN 201620500120U CN 205829446 U CN205829446 U CN 205829446U
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Abstract
This utility model belongs to power-supply device field, it is provided that a kind of power interface circuit.In this utility model embodiment, power interface circuit includes modulation module, power interface, voltage transformation module and demodulation module, modulation module receives d. c. voltage signal and control signal, and after DC power signal and control signal are modulated, export modulated voltage signal, modulated voltage signal is transmitted to voltage transformation module and demodulation module by power interface, modulated voltage signal is converted to d. c. voltage signal by voltage transformation module, and modulated voltage signal is demodulated obtaining control signal by demodulation module.The power interface circuit that this utility model embodiment provides is possible not only to transmit power supply signal, can be with transmission of control signals, when electrical appliance is controlled by needs, control signal directly can be transmitted to electrical appliance by this power interface circuit, solve time prior art wants transmission of control signals, interface, complex interfaces, the problem of easy wrong plug when consumer uses need to be increased.
Description
Technical field
This utility model belongs to power-supply device technical field, particularly relates to a kind of power interface circuit.
Background technology
Power interface is the interface connecting power supply with electrical appliance, and existing power interface the most only transmits power supply signal, and the most existing power interface only includes a power line and a ground wire.
And when needing to be controlled electrical appliance, when i.e. needing transmission of control signals to electrical appliance, existing method is to be further added by a control signal coffret, such shortcoming is product complex interfaces, easy wrong plug when consumer uses, and interface is too many, water proof and dust proof difficulty.
Utility model content
The purpose of this utility model embodiment is to provide a kind of power interface circuit, aim to solve the problem that existing power interface can only transmit power supply signal, can not transmission of control signals, if increasing control signal coffret, then there is complex interfaces, easy wrong plug when consumer uses, and interface is too many, water proof and dust proof difficulty problem.
This utility model embodiment is achieved in that a kind of power interface circuit, and described power interface circuit includes:
First input end and the second input connect power module and control module respectively, receive d. c. voltage signal and the control signal of described control module output of the output of described power module, and export the modulation module of modulated voltage signal after described d. c. voltage signal and described control signal are modulated；
The outfan of input termination demodulation module, the power interface that the modulated voltage signal that described modulation module exports is transmitted；
Input terminates the outfan of described power interface, and the modulated voltage signal exporting described power interface carries out voltage conversion, obtains the voltage transformation module of d. c. voltage signal；And
Input terminates the outfan of described power interface, and the modulated voltage signal exporting described power interface is demodulated, and obtains the demodulation module of control signal.
Further, described voltage transformation module includes charhing unit and battery unit, described charhing unit and described battery unit are sequentially connected in series between the input and outfan thereof of described voltage transformation module, described charhing unit is the charging of described battery unit, described battery unit output d. c. voltage signal.
Further, described voltage transformation module also includes:
Input terminates the outfan of described battery unit, after the unstable d. c. voltage signal exporting described battery unit is changed, and the DC/DC converting unit of output galvanic current pressure signal.
Further, described power interface circuit also includes:
Being connected between the outfan of described power interface and the input of described demodulation module, the modulated voltage signal exporting described power interface is sampled, and by the sampling module of sampled value output to described demodulation module.
Further, described control signal is ac voltage signal.
Further, described control signal is ac pulse voltage signal.
Further, described modulation module includes between input and the outfan thereof that pressure unit and the first switch element, described pressure unit and described first switch element are connected in parallel on described modulation module, and the control of described first switch element terminates described control module.
Further, described modulation module includes the first voltage conversion unit and second switch unit, the input of described first voltage conversion unit and the first input end that first input end is described modulation module of described second switch unit, the output of described first voltage conversion unit terminates the second input of described second switch unit, the outfan that outfan is described modulation module of described second switch unit, second input that control end is described modulation module of described second switch unit.
Further, described modulation module includes the second voltage conversion unit and feedback control unit, described second voltage conversion unit is connected between the first input end of described modulation module and the outfan of described modulation module, the input of described feedback control unit terminates the outfan of described modulation module, the output of described feedback control unit terminates described second voltage conversion unit, second input that control end is described modulation module of described feedback control unit.
Further, described sampling module includes the first partial pressure unit and the second partial pressure unit, described first partial pressure unit and described second partial pressure unit are serially connected between input and the ground of described sampling module, described first partial pressure unit and the outfan that common port is described sampling module of described second partial pressure unit.
In this utility model embodiment, power interface circuit includes modulation module, power interface, voltage transformation module and demodulation module, modulation module receives d. c. voltage signal and control signal, and after DC power signal and control signal are modulated, export modulated voltage signal, modulated voltage signal is transmitted to voltage transformation module and demodulation module by power interface, modulated voltage signal is converted to d. c. voltage signal by voltage transformation module, and modulated voltage signal is demodulated obtaining control signal by demodulation module.The power interface circuit that this utility model embodiment provides is possible not only to transmit power supply signal, can be with transmission of control signals, when electrical appliance is controlled by needs, control signal directly can be transmitted to electrical appliance by this power interface circuit, solve time prior art wants transmission of control signals, interface need to be increased, there is complex interfaces, easy wrong plug when consumer uses, and interface is too many, the problem of water proof and dust proof difficulty.
Accompanying drawing explanation
Fig. 1 is the function structure chart of the power interface circuit that this utility model first embodiment provides；
Fig. 2 is the function structure chart of the power interface circuit that this utility model the second embodiment provides；
Fig. 3 is the function structure chart of the power interface circuit that this utility model the 3rd embodiment provides；
Fig. 4 is the function structure chart of the power interface circuit that this utility model the 4th embodiment provides；
Fig. 5 (a) is the waveform diagram that in this utility model embodiment, power module inputs the d. c. voltage signal to modulation module；When Fig. 5 (b) is that in this utility model embodiment, control signal is ac pulse voltage signal, the ceiling voltage of the modulated voltage signal of modulation module output is less than or equal to the waveform diagram of d. c. voltage signal；When Fig. 5 (c) is that in this utility model embodiment, control signal is ac pulse voltage signal, the ceiling voltage of the modulated voltage signal of modulation module output is more than the waveform diagram of d. c. voltage signal；
Fig. 6 is the structure chart of the first embodiment of the modulation module that this utility model embodiment provides；
Fig. 7 is the circuit structure diagram of the first implementation of the first embodiment of the modulation module that this utility model embodiment provides；
Fig. 8 is the circuit structure diagram of the second implementation of the first embodiment of the modulation module that this utility model embodiment provides；
Fig. 9 is the circuit structure diagram of the third implementation of the first embodiment of the modulation module that this utility model embodiment provides；
Figure 10 is the circuit structure diagram of the first embodiment of the switch S1 that this utility model embodiment provides；
Figure 11 is the circuit structure diagram of second embodiment of the switch S1 that this utility model embodiment provides；
Figure 12 (a) is the waveform diagram that the power module in the first embodiment of the modulation module that this utility model embodiment provides inputs the d. c. voltage signal to modulation module；Figure 12 (b) is the waveform diagram that the control module in the first embodiment of the modulation module that this utility model embodiment provides inputs the control signal to modulation module；Figure 12 (c) is the waveform diagram of the modulated voltage signal of the modulation module output in the first embodiment of the modulation module that this utility model embodiment provides；
Figure 13 is the structure chart of the second embodiment of the modulation module that this utility model embodiment provides；
Figure 14 is the circuit structure diagram of the first embodiment of the second switch unit that this utility model embodiment provides；
Figure 15 is the circuit structure diagram of the second embodiment of the second switch unit that this utility model embodiment provides；
Figure 16 is the circuit structure diagram of the 3rd embodiment of the second switch unit that this utility model embodiment provides；
Figure 17 (a) is the waveform diagram that in this utility model embodiment, power module inputs the d. c. voltage signal to modulation module；The waveform diagram of the modulated voltage signal of modulation module output when Figure 17 (b) is that in this utility model embodiment, the first voltage transformation module is reduction voltage circuit；The waveform diagram of the modulated voltage signal of modulation module output when Figure 17 (c) is that in this utility model embodiment, the first voltage transformation module is booster circuit；
Figure 18 is the structure chart of the 3rd embodiment of the modulation module that this utility model embodiment provides；
Figure 19 is the circuit structure diagram of the feedback control unit that this utility model embodiment provides；
Figure 20 is the circuit structure diagram of the first embodiment of the sampling module that this utility model embodiment provides；
Figure 21 (a) is the waveform diagram of the input signal of sampling module in this utility model embodiment；Figure 21 (b) be in this utility model embodiment when the first partial pressure unit is resistance the waveform diagram of the output signal of sampling module；
Figure 22 is the circuit structure diagram of the second embodiment of the sampling module that this utility model embodiment provides；
Figure 23 is the circuit structure diagram of the 3rd embodiment of the sampling module that this utility model embodiment provides；
Figure 24 is the circuit structure diagram of the 4th embodiment of the sampling module that this utility model embodiment provides；
Figure 25 (a) is the waveform diagram of the input signal of sampling module in this utility model embodiment；Figure 25 (b) be in this utility model embodiment when the first partial pressure unit is diode the waveform diagram of the output signal of sampling module.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Fig. 1 shows the modular structure of the power interface circuit that this utility model first embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
A kind of power interface circuit, described power interface circuit includes:
First input end and the second input connect power module and control module respectively, receive d. c. voltage signal and the control signal of described control module output of the output of described power module, and export the modulation module 1 of modulated voltage signal after described d. c. voltage signal and described control signal are modulated；
The outfan of input termination demodulation module 1, the power interface 2 that the modulated voltage signal that modulation module 1 exports is transmitted；
The outfan of input termination power interface 2, carries out voltage conversion to the modulated voltage signal of power interface 2 output, obtains the voltage transformation module 3 of d. c. voltage signal；And
The outfan of input termination power interface 2, is demodulated the modulated voltage signal of power interface 2 output, obtains the demodulation module 4 of control signal.
Fig. 2 shows the modular structure of the power interface circuit that this utility model the second embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, voltage transformation module 3 includes charhing unit 31 and battery unit 32, charhing unit 31 and battery unit 32 are sequentially connected in series between the input and outfan thereof of voltage transformation module 3, charhing unit 31 charges for battery unit 32, and battery unit 32 exports d. c. voltage signal.
In the present embodiment, battery unit 32 is accumulator, and accumulator output d. c. voltage signal is to load.In actual applications, the change of load only can affect the change of battery unit 32 output voltage, the electric current to battery unit 32 is exported without affecting charhing unit 31, that is, charhing unit 31 charges to battery unit 32 with the constant electric current that maybe will not suddenly change always, therefore, the change of load does not interferes with modulation module 1 and exports the voltage to demodulation module 4, thus the change reducing load correctly demodulates the impact of control signal to demodulation module 4.
Fig. 3 shows the modular structure of the power interface circuit that this utility model the 3rd embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, voltage transformation module 3 also includes:
The outfan of input termination battery unit 32, after the unstable d. c. voltage signal exporting battery unit 32 is changed, the DC/DC converting unit 33 of output galvanic current pressure signal.
In the present embodiment, because the voltage of battery unit 32 is change, the unstable d. c. voltage signal therefore exported by battery unit 32 by increasing DC/DC unit is converted to galvanic current pressure signal, to improve the conversion efficiency of voltage transformation module 3.
Fig. 4 shows the modular structure of the power interface circuit that this utility model the 4th embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, described power interface circuit also includes:
It is connected between the outfan of power interface 2 and the input of demodulation module 4, the modulated voltage signal of power interface 2 output is sampled, and by the sampling module 5 of sampled value output to demodulation module 4.
Fig. 5 (a) shows that in this utility model embodiment, power module inputs the waveform diagram of the d. c. voltage signal to modulation module；Fig. 5 (b) shows that when control signal is ac pulse voltage signal in this utility model embodiment, the ceiling voltage of the modulated voltage signal of modulation module output is less than or equal to the waveform diagram of d. c. voltage signal；Fig. 5 (c) shows that when control signal is ac pulse voltage signal in this utility model embodiment, the ceiling voltage of the modulated voltage signal of modulation module output is more than the waveform diagram of d. c. voltage signal.
As this utility model one embodiment, described power module output d. c. voltage signal is to modulation module 1, when described control module output AC voltage signal is to modulation module 1, the modulated voltage signal of modulation module 1 output is the superposition signal of ac voltage signal on d. c. voltage signal.
As another embodiment of this utility model, when described control module output AC pulse voltage signal is to modulation module 1, the modulated voltage signal of modulation module 1 output is the superposition signal of ac pulse voltage signal on d. c. voltage signal.
Fig. 6 shows the structure chart of the first embodiment of the modulation module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, modulation module 1 includes pressure unit 11 and the first switch element 12, pressure unit 11 and the first switch element 12 are connected in parallel between input and the outfan thereof of modulation module 1, and the control of the first switch element 12 terminates described control module.
In the present embodiment, the input of modulation module 1 and the voltage difference of its outfan are the voltage drop of pressure unit 11, the value that maximum is its d. c. voltage signal received of the modulated voltage signal of modulation module 1 output, the minima of the modulated voltage signal of modulation module 1 output is the voltage drop that the d. c. voltage signal that modulation module 1 receives deducts pressure unit 11.
Fig. 7 shows the circuit structure diagram of the first implementation of the first embodiment of the modulation module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, pressure unit 11 includes resistance R1, switch element 12 includes switching S1, first end of resistance R1 is connected to the first input end of modulation module 1 altogether with a end switching S1, the b end of second end of resistance R1 and switch S1 is connected to the outfan of modulation module 1 altogether, second input that c end is modulation module 1 of switch S1, the control end c of switch S1 controls conducting and the closedown of switch S1.
Fig. 8 shows the circuit structure diagram of the second implementation of the first embodiment of the modulation module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, pressure unit 11 includes diode D1, switch element 12 includes switching S1, the anode of diode D1 is connected to the first input end of modulation module 1 altogether with a end switching S1, the b end of the negative electrode of diode D1 and switch S1 is connected to the outfan of modulation module 1 altogether, second input that c end is modulation module 1 of switch S1, the control end c of switch S1 controls conducting and the closedown of switch S1.
In the present embodiment, because diode D1 has voltage stabilizing feature, therefore, the voltage of modulation module 1 output will not change with the change of load.
Fig. 9 shows the circuit structure diagram of the third implementation of the first embodiment of the modulation module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, pressure unit 11 includes the diode D1 of multiple series connection, switch element 12 includes switching S1, the anode of first diode D1 is connected to the first input end of modulation module 1 altogether with a end switching S1, the b end of the negative electrode of last diode D1 and switch S1 is connected to the outfan of modulation module 1 altogether, second input that c end is modulation module 1 of switch S1, the control end c of switch S1 controls conducting and the closedown of switch S1.
Figure 10 shows the circuit structure diagram of the first embodiment of the switch S1 that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, switch S1 includes resistance R2, resistance R3, metal-oxide-semiconductor Q1, audion Q2, the source electrode of metal-oxide-semiconductor Q1 and first end of resistance R2 are jointly for a end of switch S1, the b end that drain electrode is switch S1 of metal-oxide-semiconductor Q1, second end of the grid of metal-oxide-semiconductor Q1 and resistance R2 is connected to the colelctor electrode of audion Q2 altogether, the base stage of audion Q2 is the c end of switch S1, the grounded emitter of audion Q2.
Figure 11 shows the circuit structure diagram of second embodiment of the switch S1 that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, switch S1 includes resistance R2, resistance R3, audion Q3, audion Q2, the emitter stage of audion Q3 and first end of resistance R2 are jointly for a end of switch S1, the current collection of audion Q3 extremely switchs the b end of S1, second end of the base stage of audion Q3 and resistance R2 is connected to the colelctor electrode of audion Q2 altogether, the base stage of audion Q2 is the c end of switch S1, the grounded emitter of audion Q2.
Figure 12 (a) shows that the power module input in the first embodiment of the modulation module that this utility model embodiment provides is to the waveform diagram of the d. c. voltage signal of modulation module；Figure 12 (b) shows that the control module input in the first embodiment of the modulation module that this utility model embodiment provides is to the waveform diagram of the control signal of modulation module；Figure 12 (c) shows the waveform diagram of the modulated voltage signal of the modulation module output in the first embodiment of the modulation module that this utility model embodiment provides.
In the present embodiment, the control signal of described control module output to modulation module 1 is ac voltage signal, and the modulated voltage signal of modulation module 1 output is also ac voltage signal.
Figure 13 shows the structure chart of the second embodiment of the modulation module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As this utility model one embodiment, modulation module 1 includes the first voltage conversion unit 13 and second switch unit 14, the input of the first voltage conversion unit 13 and the first input end that first input end is modulation module 1 of second switch unit 14, second input of the output termination second switch unit 14 of the first voltage conversion unit 13, the outfan of second switch unit 14 is the outfan of modulation module 1, second input that control end is modulation module 1 of second switch unit 14.
In the present embodiment, the first voltage conversion unit 13 can be booster circuit, it is also possible to for reduction voltage circuit, the input of modulation module 1 and the voltage difference of its outfan are pressure drop or the pressure liter of the first voltage conversion unit 13.
Figure 14 shows the circuit structure diagram of the first embodiment of the second switch unit that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, second switch unit 14 includes movable end a, movable end b, fixing end c and controls end d, the first input end that moved end a is modulation module 1 of switch element 14, the movable end b of switch element 14 connects the outfan of the first voltage transformation module 13, second input that control end d is modulation module 1 of switch element 14, the outfan that fixing end c is modulation module 1 of switch element 14.
Figure 15 shows the circuit structure diagram of the second embodiment of the second switch unit that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, second switch unit 14 includes movable end a, movable end b, fixing end c, fixing end d, controls end e and control end f, the first input end that movable end a is modulation module 1 of switch element 14, the movable end b of switch element 14 connects the outfan of the first voltage transformation module 13, the control end e of the switch element 14 and control end f of switch element 14 is the second input of modulation module 1 jointly, the fixing end c of switch element 14 and the outfan that fixing end d is modulation module 1 of switch element 14.
Figure 16 shows the circuit structure diagram of the 3rd embodiment of the second switch unit that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, second switch unit 14 includes movable end a, controls end b and fixing end c, the first input end that movable end a is modulation module 1 of switch element 14, second input that control end b is modulation module 1 of switch element 14, the outfan that fixing end c is modulation module 1 of switch element 14, meanwhile, the fixing end c of switch element 14 also connects the first voltage conversion unit 13.
Figure 17 (a) shows that in this utility model embodiment, power module inputs the waveform diagram of the d. c. voltage signal to modulation module, and Figure 17 (b) shows the waveform diagram of the modulated voltage signal of modulation module output when the first voltage transformation module is reduction voltage circuit in this utility model embodiment；Figure 17 (c) shows the waveform diagram of the modulated voltage signal of modulation module output when the first voltage transformation module is booster circuit in this utility model embodiment.
In an embodiment of the present utility model, when the first voltage conversion unit 13 is booster circuit, the maximum of the modulated voltage signal of modulation module 1 output is the magnitude of voltage of the first voltage conversion unit 13 output, the value that minima is the d. c. voltage signal that modulation module 1 receives of the modulated voltage signal of modulation module 1 output；In another embodiment of the present utility model, when the first voltage conversion unit 13 is reduction voltage circuit, the value that maximum is the d. c. voltage signal that modulation module 1 receives of the modulated voltage signal of modulation module 1 output, the minima of the modulated voltage signal of modulation module 1 output is the magnitude of voltage of the first voltage conversion unit 13 output.
Figure 18 shows the structure chart of the 3rd embodiment of the modulation module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, modulation module 1 includes the second voltage conversion unit 15 and feedback control unit 16, second voltage conversion unit 15 is connected between the first input end of modulation module 1 and the outfan of modulation module 1, the outfan of the input termination modulation module 1 of feedback control unit 16, the output of feedback control unit 16 terminates the second voltage conversion unit 15, second input that control end is modulation module 1 of feedback control unit 16.
In the present embodiment, by arranging feedback control unit 16 so that user can arrange maximum and the minima of the modulated voltage signal of modulation module 1 output the most flexibly.
Figure 19 shows the circuit structure diagram of the feedback control unit that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, feedback control unit 16 includes resistance R4, resistance R5, resistance R6, resistance R7 and audion Q4, resistance R4 and resistance R5 is sequentially connected in series before the outfan and ground of modulation module 1, the common port of resistance R4 and resistance R5 is the outfan of feedback control unit 16, first end of the common port of resistance R4 and resistance R5 also connecting resistance R6, the colelctor electrode of the second termination audion Q4 of resistance R6, the grounded emitter of audion Q4, first end of the base stage connecting resistance R7 of audion Q4, the control end that second end is feedback control unit of resistance R7.
As an embodiment of the present utility model, sampling module 5 includes the first partial pressure unit and the second partial pressure unit, described first partial pressure unit and described second partial pressure unit are serially connected between input and the ground of sampling module 5, described first partial pressure unit and the outfan that common port is sampling module 5 of described second partial pressure unit.
Figure 20 shows the circuit structure diagram of the first embodiment of the sampling module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, described first partial pressure unit includes resistance R8, described second partial pressure unit includes that resistance R9, resistance R8 and resistance R9 are sequentially connected in series between the input and ground of sampling module 5, and the common port of resistance R8 and resistance R9 is the outfan of sampling module 5.
Figure 21 (a) shows the waveform diagram of the input signal of sampling module in this utility model embodiment；Figure 21 (b) shows in this utility model embodiment the waveform diagram of the output signal of sampling module when the first partial pressure unit is resistance.
In the present embodiment, the input signal of sampling module 5 is modulated voltage signal, when described first partial pressure unit is resistance, after sampling module 5 sampling, the d. c. voltage signal in the modulated voltage signal of output and control signal (ac voltage signal) equal proportion reduce.
Figure 22 shows the circuit structure diagram of the second embodiment of the sampling module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, described first partial pressure unit includes that stabilivolt D2, described second partial pressure unit include that resistance R9, the negative electrode of stabilivolt D2 are the input of sampling module 5, the anode of stabilivolt D2 passes through resistance R9 ground connection, and the anode of stabilivolt D2 is the outfan of sampling module 5.
Figure 23 shows the circuit structure diagram of the 3rd embodiment of the sampling module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, described first partial pressure unit includes that diode D3, described second partial pressure unit include that resistance R9, the anode of diode D3 are the input of sampling module 5, the negative electrode of diode D3 passes through resistance R9 ground connection, and the negative electrode of diode D3 is the outfan of sampling module 5.
Figure 24 shows the circuit structure diagram of the 4th embodiment of the sampling module that this utility model embodiment provides, and for convenience of description, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, described first partial pressure unit includes the diode D3 of multiple series connection, described second partial pressure unit includes resistance R9, the input that anode is sampling module 5 of first diode D3 in the diode D3 of multiple series connection, the negative electrode of last diode D3 passes through resistance R9 ground connection, the outfan that negative electrode is sampling module 5 of last diode D3.
Figure 25 (a) shows the waveform diagram of the input signal of sampling module in this utility model embodiment；Figure 25 (b) shows in this utility model embodiment the waveform diagram of the output signal of sampling module when the first partial pressure unit is diode.
In the present embodiment, the input signal of sampling module 5 is modulated voltage signal, when described first partial pressure unit is diode or Zener diode, because diode has constant-voltage characteristic, therefore after sampling module 5 sampling, the d. c. voltage signal in the modulated voltage signal of output reduces, and control signal (ac voltage signal) is constant.
In this utility model embodiment, power interface circuit includes modulation module, power interface, voltage transformation module and demodulation module, modulation module receives d. c. voltage signal and control signal, and after DC power signal and control signal are modulated, export modulated voltage signal, modulated voltage signal is transmitted to voltage transformation module and demodulation module by power interface, modulated voltage signal is converted to d. c. voltage signal by voltage transformation module, and modulated voltage signal is demodulated obtaining control signal by demodulation module.The power interface circuit that this utility model embodiment provides is possible not only to transmit power supply signal, can be with transmission of control signals, when electrical appliance is controlled by needs, control signal directly can be transmitted to electrical appliance by this power interface circuit, solve time prior art wants transmission of control signals, interface need to be increased, there is complex interfaces, easy wrong plug when consumer uses
And interface is too many, the problem of water proof and dust proof difficulty.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (10)
1. a power interface circuit, it is characterised in that described power interface circuit includes:
First input end and the second input connect power module and control module respectively, receive d. c. voltage signal and the control signal of described control module output of the output of described power module, and export the modulation module of modulated voltage signal after described d. c. voltage signal and described control signal are modulated；
The outfan of input termination demodulation module, the power interface that the modulated voltage signal that described modulation module exports is transmitted；
Input terminates the outfan of described power interface, and the modulated voltage signal exporting described power interface carries out voltage conversion, obtains the voltage transformation module of d. c. voltage signal；And
Input terminates the outfan of described power interface, and the modulated voltage signal exporting described power interface is demodulated, and obtains the demodulation module of control signal.
2. power interface circuit as claimed in claim 1, it is characterized in that, described voltage transformation module includes charhing unit and battery unit, described charhing unit and described battery unit are sequentially connected in series between the input and outfan thereof of described voltage transformation module, described charhing unit is the charging of described battery unit, described battery unit output d. c. voltage signal.
3. power interface circuit as claimed in claim 2, it is characterised in that described voltage transformation module also includes:
Input terminates the outfan of described battery unit, after the unstable d. c. voltage signal exporting described battery unit is changed, and the DC/DC converting unit of output galvanic current pressure signal.
4. power interface circuit as claimed in claim 3, it is characterised in that described power interface circuit also includes:
Being connected between the outfan of described power interface and the input of described demodulation module, the modulated voltage signal exporting described power interface is sampled, and by the sampling module of sampled value output to described demodulation module.
5. power interface circuit as claimed in claim 4, it is characterised in that described control signal is ac voltage signal.
6. power interface circuit as claimed in claim 5, it is characterised in that described control signal is ac pulse voltage signal.
7. power interface circuit as claimed in claim 6, it is characterized in that, described modulation module includes pressure unit and the first switch element, described pressure unit and described first switch element are connected in parallel between input and the outfan thereof of described modulation module, and the control of described first switch element terminates described control module.
8. power interface circuit as claimed in claim 6, it is characterized in that, described modulation module includes the first voltage conversion unit and second switch unit, the input of described first voltage conversion unit and the first input end that first input end is described modulation module of described second switch unit, the output of described first voltage conversion unit terminates the second input of described second switch unit, the outfan that outfan is described modulation module of described second switch unit, second input that control end is described modulation module of described second switch unit.
9. power interface circuit as claimed in claim 6, it is characterized in that, described modulation module includes the second voltage conversion unit and feedback control unit, described second voltage conversion unit is connected between the first input end of described modulation module and the outfan of described modulation module, the input of described feedback control unit terminates the outfan of described modulation module, the output of described feedback control unit terminates described second voltage conversion unit, second input that control end is described modulation module of described feedback control unit.
10. power interface circuit as claimed in claim 4, it is characterized in that, described sampling module includes the first partial pressure unit and the second partial pressure unit, described first partial pressure unit and described second partial pressure unit are serially connected between input and the ground of described sampling module, described first partial pressure unit and the outfan that common port is described sampling module of described second partial pressure unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500120.2U CN205829446U (en) | 2016-05-27 | 2016-05-27 | A kind of power interface circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500120.2U CN205829446U (en) | 2016-05-27 | 2016-05-27 | A kind of power interface circuit |
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| CN205829446U true CN205829446U (en) | 2016-12-21 |
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| CN201620500120.2U Expired - Fee Related CN205829446U (en) | 2016-05-27 | 2016-05-27 | A kind of power interface circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811741A (en) * | 2016-05-27 | 2016-07-27 | 深圳市赛音电子有限公司 | Power interface circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811741A (en) * | 2016-05-27 | 2016-07-27 | 深圳市赛音电子有限公司 | Power interface circuit |
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