CN204205625U - Radio-frequency (RF) receiving circuit and electric motor car - Google Patents
Radio-frequency (RF) receiving circuit and electric motor car Download PDFInfo
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- CN204205625U CN204205625U CN201420424993.0U CN201420424993U CN204205625U CN 204205625 U CN204205625 U CN 204205625U CN 201420424993 U CN201420424993 U CN 201420424993U CN 204205625 U CN204205625 U CN 204205625U
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Abstract
The utility model is applicable to electric automobiles, provides radio-frequency (RF) receiving circuit and electric motor car; Filter circuit carries out filtering, the modulated data signal that output filtering obtains to the radiofrequency signal received by antenna frequency centered by carrier frequency; The described modulated data signal of signal amplification circuit to access carries out signal amplification and the modulated data signal be amplified, and exports the modulated data signal of described amplification; The modulated data signal of carrier wave demodulation circuit to the described amplification of access is carried out carrier wave demodulation and obtains unloading the data-signal of ripple, unloads the data-signal of ripple described in output; Signal demodulating circuit carries out signal receiving to the data-signal unloading ripple described in access and obtains data-signal, exports described data-signal to described control module and described switching circuit of power supply.Control module can parse the data that charger sends from this data-signal.
Description
Technical field
The utility model belongs to electric automobiles, particularly relates to radio-frequency (RF) receiving circuit and electric motor car.
Background technology
Electric motor car, comprises electric bicycle, battery-operated motor cycle and electric unicycle; Due to its inapplicable fuel, use chargeable battery as drive energy, realize Green Travel, be subject to all the more the favor of people.Before use electric motor car, all need battery charging, band could be gone on a journey after being full of enough electricity.
The electric motor car that prior art provides, when charging to its battery, the control module in electric motor car be not with charger communication, and then controller cannot monitor charging process by charger.
Utility model content
The purpose of this utility model is to provide radio-frequency (RF) receiving circuit and electric motor car, to be received the radiofrequency signal that charger sends by this radio-frequency (RF) receiving circuit, then from radiofrequency signal, demodulates data-signal and exports to control module.
On the one hand, the utility model provides a kind of radio-frequency (RF) receiving circuit, and described radio-frequency (RF) receiving circuit comprises power supply, antenna, filter circuit, signal amplification circuit, carrier wave demodulation circuit and signal demodulating circuit; Described power supply is electrically connected with described signal amplification circuit, described carrier wave demodulation circuit and described signal demodulating circuit respectively, described antenna, described filter circuit, described signal amplification circuit, described carrier wave demodulation circuit and described signal demodulating circuit are electrically connected successively, the external control module of described signal demodulating circuit and switching circuit of power supply;
Described filter circuit receives the radiofrequency signal sent by charger by antenna, carry out filtering, to the modulated data signal that described signal amplification circuit output filtering obtains to the radiofrequency signal received frequency centered by carrier frequency;
The described modulated data signal of described signal amplification circuit to access carries out signal amplification and the modulated data signal be amplified, and exports the modulated data signal of described amplification to described carrier wave demodulation circuit;
The modulated data signal of described carrier wave demodulation circuit to the described amplification of access is carried out carrier wave demodulation and obtains unloading the data-signal of ripple, unloads the data-signal of ripple to described signal demodulating circuit described in exporting;
Described signal demodulating circuit carries out signal receiving to the data-signal unloading ripple described in access and obtains data-signal, exports described data-signal to described control module and described switching circuit of power supply.
On the one hand, the utility model provides electric motor car, and described electric motor car comprises above-mentioned radio-frequency (RF) receiving circuit, control module and switching circuit of power supply.
The beneficial effects of the utility model: in the process that charger charges to electric motor car, the radiofrequency signal of carrying data sent by its radio-frequency module by charger is received by antenna, circuit, signal amplification circuit, carrier wave demodulation circuit and signal demodulating circuit obtain data-signal after carrying out signal transacting after filtering successively, and then control module can parse the data of charger transmission from this data-signal.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the composition structure chart of the radio-frequency (RF) receiving circuit that the utility model embodiment provides;
Fig. 2 is the physical circuit figure of the radio-frequency (RF) receiving circuit that the utility model embodiment provides;
Fig. 3 is that one of the radio-frequency (RF) receiving circuit that the utility model embodiment provides optimizes composition structure chart;
Fig. 4 is the another optimization composition structure chart of the radio-frequency (RF) receiving circuit that the utility model embodiment provides;
Fig. 5 is a physical circuit figure of switching circuit of power supply 1;
Fig. 6 is the another optimization composition structure chart of the radio-frequency (RF) receiving circuit that the utility model embodiment provides;
Fig. 7 is the physical circuit of delay circuit 3;
Fig. 8 is the physical circuit of signal demodulating circuit 41.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In order to technical scheme described in the utility model is described, be described below by specific embodiment.
Fig. 1 shows the composition structure of the radio-frequency (RF) receiving circuit that the utility model embodiment provides, and for convenience of description, illustrate only the part relevant to the utility model embodiment.
The radio-frequency (RF) receiving circuit 4 that the utility model embodiment provides, as shown in Figure 1, described radio-frequency (RF) receiving circuit comprises power supply, antenna, filter circuit 44, signal amplification circuit 43, carrier wave demodulation circuit 42 and signal demodulating circuit 41; Described power supply is electrically connected with described signal amplification circuit 43, described carrier wave demodulation circuit 42 and described signal demodulating circuit 41 respectively, and described antenna, described filter circuit 44, described signal amplification circuit 43, described carrier wave demodulation circuit 42 and described signal demodulating circuit 41 are electrically connected successively; The external described control module 2 of described signal demodulating circuit 41 and switching circuit of power supply 1.
See Fig. 1, described filter circuit 44 receives the radiofrequency signal sent by charger by antenna, carries out filtering to the radiofrequency signal received frequency centered by carrier frequency, to the modulated data signal that described signal amplification circuit 43 output filtering obtains.
In the utility model embodiment, after charger is electrically connected with electric motor car, by this charger, the battery of electric motor car is charged.While charging to this battery, the radio-frequency module that this charger has by it sends radiofrequency signal to power supply circuits.Particularly, charger, when the battery charging to electric motor car, sends the radiofrequency signal of carrying data in real time to electric motor car by its radio-frequency module.And then the radio-frequency (RF) receiving circuit 4 in electric motor car receives by antenna the radiofrequency signal that this carries data, by filter circuit 44 frequency centered by carrier frequency, filtering is carried out to the radiofrequency signal that this carries data, filtering and the incoherent noise signal of radiofrequency signal of carrying data.
See Fig. 1, the described modulated data signal of described signal amplification circuit 43 to access carries out signal amplification and the modulated data signal be amplified, and exports the modulated data signal of described amplification to described carrier wave demodulation circuit 42.
In the utility model embodiment, the modulated data signal exported due to filter circuit 44 is less, if directly carry out carrier wave demodulation to this modulated data signal, be difficult to obtain correct described in unload the data-signal of ripple.Therefore, the utility model embodiment is before carrying out carrier wave demodulation to this modulated data signal, carry out signal amplification (such as amplitude amplification) by described signal amplification circuit 43, then export the modulated data signal after amplifying to described carrier wave demodulation circuit 42.
See Fig. 1, the modulated data signal of described carrier wave demodulation circuit 42 to the described amplification of access is carried out carrier wave demodulation and obtains unloading the data-signal of ripple, unloads the data-signal of ripple to described signal demodulating circuit 41 described in exporting.
In the present embodiment, carrier wave demodulation circuit 42 includes self-maintained circuit; Carrier wave is produced by this self-excited vibration circuit; And then pass through the carrier wave of this self-excited vibration circuit evolving, use the modulated data signal of this carrier wave to the described amplification that described signal amplification circuit 43 exports to carry out carrier wave demodulation (namely unloading ripple), described in carrier wave demodulation obtains, unload the data-signal of ripple.
Described signal demodulating circuit 41 carries out signal receiving to the data-signal unloading ripple described in access and obtains data-signal, exports described data-signal to described control module and described switching circuit of power supply.
It should be noted that, for the signal demodulating circuit 41 described in the utility model embodiment, be the signal madulation mode that adopts according to charger and correspondence is selected; As charger adopts which amplitude modulation mode, then the signal demodulating circuit 41 selected is amplitude modulation demodulation circuit; As charger adopts frequency modulated mode, then the signal demodulating circuit 41 selected is frequency demodulation circuit; As charger adopts phase modulation method, then the signal demodulating circuit 41 selected is phase demodulation circuit; Therefore, the signal demodulating circuit 41 described in the utility model embodiment is not limited, according to charger adopt signal madulation mode and determine.
Therefore in embodiments of the present invention, owing to the addition of radio-frequency module at charger, charger sends radiofrequency signal by this radio-frequency module to electric motor car.After charger is electrically connected with electric motor car, by this charger, the battery of electric motor car is charged.While charging to this battery, this charger sends the radiofrequency signal of carrying data to radio-frequency (RF) receiving circuit 4 by its radio-frequency module had.This radiofrequency signal is successively through unloading the data-signal of ripple described in antenna, filter circuit 44, signal amplification circuit 43, carrier wave demodulation circuit 42 obtain after carrying out signal transacting, and then unload signal receiving the data-signal of ripple by signal demodulating circuit 41 go out described data-signal from described, export this data-signal to control module 2, control module 2 can parse data from this data-signal.
As an embodiment, charger can detect the electricity of this battery in real time when the battery charging to electric motor car, and is sent the radiofrequency signal of carrying electricity by its radio-frequency module; Correspondingly, parse this electricity the data-signal that control module 2 can export from signal demodulating circuit 41, specify corresponding control action according to this electricity.
Fig. 2 shows the physical circuit of the radio-frequency (RF) receiving circuit 4 that the utility model embodiment provides, and for convenience of description, illustrate only the part relevant to the utility model embodiment.
As the utility model one preferred embodiment, for the filter circuit 44 that described radio-frequency (RF) receiving circuit 4 comprises, described filter circuit 44 has antenna end and filtering output end, antenna described in described antenna termination; Described filter circuit 44 receives the radiofrequency signal of charger transmission by antenna, carries out filtering, from the modulated data signal that described filtering output end output filtering obtains to the radiofrequency signal received frequency centered by carrier frequency.
As shown in Figure 2, described filter circuit 44 comprises the 3rd inductance and L3 the 48 electric capacity C48;
The first end of described 3rd inductance L 3 is respectively antenna end and the filtering output end of described filter circuit 44, the second end ground connection of described 3rd inductance L 3, described 3rd inductance L 3 and described 48 electric capacity C48 parallel connection.
In the preferred embodiment, the LC filter filtering noise formed by the 48 electric capacity C48 and the 3rd inductance L 3, retains the radiofrequency signal of carrying data of frequency centered by carrier frequency.
As the utility model one preferred embodiment, see Fig. 2, for the signal amplification circuit 43 that described radio-frequency (RF) receiving circuit 4 comprises, described signal amplification circuit 43 has signal input part, power end and signal output part, and described input and described power end correspondence meet the filtering output end of described filter circuit 44 and described power supply VCC; Described signal amplification circuit 43 carries out signal amplification and the modulated data signal be amplified to the described modulated data signal accessed from described input, exports the modulated data signal of described amplification from described output.
As shown in Figure 2, described signal amplification circuit 43 comprises: the 47 electric capacity C47, the 46 electric capacity C46, the 6th NPN type triode Q6, the 54 resistance R54, the 55 resistance R55, the 56 resistance R56 and the 57 resistance R57, the first end of described 47 electric capacity C47 is the signal input part of described signal amplification circuit 43, second end of described 54 resistance R54 is the power end of described signal amplification circuit 43, second end of described 56 resistance R56 is the signal output part of described signal amplification circuit 43, the base stage of described 6th NPN type triode Q6, collector and emitter correspondence connects second end of described 47 electric capacity C47, second end of described 55 resistance R55 and the first end of described 56 resistance R56, the first end ground connection of described 56 resistance R56, the first end of described 57 resistance R57 and the second end correspondence connect second end of described 47 electric capacity C47 and the first end of described 55 resistance R55, the first end of the 55 resistance R55 described in first termination of described 54 resistance R54, the first end ground connection of described 56 resistance R56.
In the preferred embodiment, further this modulated data signal is being carried out after straight by the 47 electric capacity C47, adopt the 6th NPN type triode Q6 to carry out signal amplification, and export the modulated data signal of described amplification from signal output part (i.e. second end of the 46 electric capacity C46).
As the utility model one preferred embodiment, see Fig. 2, for the carrier wave demodulation circuit 42 that described radio-frequency (RF) receiving circuit 4 comprises, described carrier wave demodulation circuit 42 has demodulation input, demodulation power end and demodulation output, and described demodulation input and described demodulation power end correspondence meet the signal output part of described signal amplification circuit 43 and described power supply VCC; The modulated data signal of described carrier wave demodulation circuit 42 to the described amplification from described demodulation input access is carried out carrier wave demodulation and obtains unloading the data-signal of ripple, unloads the data-signal of ripple from described demodulation output described in exporting.
As shown in Figure 2, described carrier wave demodulation circuit 42 comprises: the 50 resistance R50, the 51 resistance R51, the 52 resistance R52, the 53 resistance R53, the first inductance L 1, second inductance L the 2, the 43 electric capacity C43, the 44 electric capacity C44, the 45 electric capacity C45, the 51 electric capacity C51, the 51 diode D51 and the 5th NPN type triode Q5; the first end of described 50 resistance R50 and the second end correspond to demodulation input and the demodulation output of described carrier wave demodulation circuit 42, the first end of described 51 resistance R51 is the demodulation power end of described carrier wave demodulation circuit 42, the first end of described 52 resistance R52 and the second end correspondence connect the first end of described 51 resistance R51 and the first end of described 53 resistance R53, the anode of described 51 diode D51 and negative electrode correspondence connect the second end and the ground of described 53 resistance R53, the first end of described 51 electric capacity C51 and the second end correspondence connect the first end of described 53 resistance R53 and the first end of described second inductance L 2, described 44 electric capacity C44 is in parallel with described second inductance L 2, second end of the second inductance L 2 described in second termination of described 51 resistance R51, the base stage of described 5th NPN type triode Q5, collector and emitter correspondence connects the anode of described 51 diode D51, second end of described 51 resistance R51 and the first end of described first inductance L 1, the first end of described 43 electric capacity C43 and the second end correspondence connect the collector and emitter of described 5th NPN type triode Q5, the first end of the 50 resistance R50 described in second termination of described first inductance L 1.
In the preferred embodiment, self-maintained circuit is formed by the 53 resistance, the first inductance L 1, second inductance L the 2, the 43 electric capacity C43, the 44 electric capacity C44, the 51 electric capacity C51 and the 5th NPN type triode Q5, carrier wave is produced with this self-excited vibration circuit, access the modulated data signal of described amplification to carry out carrier wave demodulation through the 45 electric capacity C45 from the base stage of the 5th NPN type triode Q5 simultaneously, described in exporting from the demodulation output (i.e. the second end of the first inductance L 1) of described carrier wave demodulation circuit 42, unload the data-signal of ripple.
Fig. 3 shows one of the radio-frequency (RF) receiving circuit 4 that the utility model embodiment provides and optimizes composition structure, for convenience of description, illustrate only the part relevant to the utility model embodiment.
In the utility model one preferred embodiment, as shown in Figure 3, described radio-frequency (RF) receiving circuit 4 also comprises electric source filter circuit 45; Described electric source filter circuit 45 is connected between the power end of described power supply and described signal amplification circuit 43, and described electric source filter circuit 45 is also connected between the demodulation power end of described power supply VCC and described carrier wave demodulation circuit 42.
In the preferred embodiment, carried out removing the filtering of noise by filter circuit frequency centered by carrier frequency and after obtaining modulated data signal, for avoiding introducing noise from power supply VCC, this preferred embodiment, when being powered by signal amplification circuit 43 described in power supply VCC and described carrier wave demodulation circuit 42, passes through electric source filter circuit 45 filter out power noise in advance.When effectively avoiding amplifying this modulated data signal, this power supply noise is amplified simultaneously, and then ensure that carrier wave demodulation circuit 42 only carries out correct demodulation to this modulated data signal, avoid carrying out demodulation to this power supply noise while to this modulated data signal demodulation, and lead to errors generate described in unload the data-signal of ripple.
See Fig. 2, as this preferred embodiment one execution mode, described electric source filter circuit 45 comprises the 49 electric capacity C49 and the 50 electric capacity C50;
The first end of described 49 electric capacity C49 and the second end correspondence connect power supply VCC and ground, described 50 electric capacity C50 is in parallel with described 49 electric capacity C49, and the first end of described 49 electric capacity C49 connects the power end of described signal amplification circuit 43 and the demodulation power end of described carrier wave demodulation circuit 42 respectively.
In the present embodiment, adopt the 50 electric capacity C50 in parallel and described 49 electric capacity C49 to carry out low-pass filtering to power supply VCC, ensure that power supply VCC only carries out the direct current supply of non-transformer noise to described signal amplification circuit 43 and described carrier wave demodulation circuit 42.
Fig. 4 shows the another optimization composition structure of the radio-frequency (RF) receiving circuit 4 that the utility model embodiment provides, and for convenience of description, illustrate only the part relevant to the utility model embodiment.
In the utility model one preferred embodiment, as shown in Figure 4, described control module 2 has power end and keeps end; Described switching circuit of power supply 1 has the first controlled end CTL1, the second controlled end CTL2 and feeder ear P, described first controlled end CTL1 meets the output R_D of described signal demodulating circuit 41, and described second controlled end CTL2 and described feeder ear P correspondence connects maintenance end and the power end of described control module 2;
Described control module 2 generates inhibit signal when the first power supply signal that described switching circuit of power supply 1 exports being detected from described power end, exports described inhibit signal from described maintenance end to described switching circuit of power supply 1;
Described switching circuit of power supply 1 during the power supply signal in the described data-signal exported by described signal demodulating circuit 41 detected from the first controlled end CTL1 in export described first power supply signal from described feeder ear P, then when described second controlled end CTL2 receives the described inhibit signal exported by described control module 2, export described second source signal from described feeder ear P.
In the preferred embodiment, after charger is electrically connected with electric motor car, charger can send the radiofrequency signal of carrying data to electric motor car.Especially when just starting to charge, the control module 2 of electric motor car is for working on power, even if therefore this charger sends data to this control module 2, this control module 2 do not worked on power can not receive.Therefore, when just starting to charge, charger sends the radiofrequency signal of carrying power supply signal to electric motor car, this power supply signal is the one in the data-signal described in the utility model embodiment.And then after circuit 44, signal amplification circuit 43, carrier wave demodulation circuit 42 and signal demodulating circuit 41 process after filtering successively, switching circuit of power supply 1 can detect the power supply signal described data-signal from the first controlled end CTL1; Trigger switching circuit of power supply 1 by this power supply signal and be communicated with the power supply of battery to control module 2, control module 2 starts to work on power; And then the control module 2 after powering on can receive data-signal from the output R_D of described signal demodulating circuit 41.
What deserves to be explained is, although the duration of this power supply signal is limited, and then triggered the first power supply signal of switching circuit of power supply 1 output by this power supply signal, the duration of this first power supply signal is also limited.But after starting control module 2 by this first power supply signal, the control module 2 after powering on still can detect the first power supply signal that switching circuit of power supply 1 exports.And then, before radio-frequency (RF) receiving circuit 4 stops exporting power supply signal to switching circuit of power supply 1 or simultaneously, described switching circuit of power supply 1 can detect the inhibit signal that control module 2 exports, and described switching circuit of power supply 1 feeder ear P described in meeting when continuing this inhibit signal to be detected continues to export described second source signal; Until described switching circuit of power supply 1 does not detect this inhibit signal, described switching circuit of power supply 1 stops battery to the power supply of described control module 2.And then control module 2 can from the output R_D continuous reception data-signal of described signal demodulating circuit 41.
In the preferred embodiment, the first power supply signal and second source signal can be identical or different power supply signal.As an embodiment, the electric current of described first power supply signal is less than the electric current of described second source signal; Switching circuit of power supply 1 exports this first power supply signal to control module 2 during power supply signal being detected, be only the preliminary partial function (comprise detection first power supply signal and generate this function of inhibit signal) starting control module 2, and then switching circuit 1 to be powered exports second source signal when powering to control module 2, control module 2 enable other function (as to as described in the data-signal that exports of signal demodulating circuit 41 carry out the function such as receiving).
Fig. 5 shows a physical circuit of switching circuit of power supply 1, for convenience of description, illustrate only the part relevant to the utility model embodiment.
In the utility model one preferred embodiment, as shown in Figure 5, described switching circuit of power supply 1 comprises: battery, the first diode D1, the second diode D2, the 3rd diode D3, the first resistance R1, the second resistance R2, the 3rd resistance R3, the first switching tube 11 and second switch pipe 12;
The anode of described first diode D1 is the first controlled end CTL1 of described switching circuit of power supply 1, the anode of described second diode D2 is the second controlled end CTL2 of described switching circuit of power supply 1, the negative electrode of described first diode D1 and the negative electrode of described second diode D2 all connect the first end of described first resistance R1, the control end of described first switching tube 11, hot end and cold end correspondence connect second end of described first resistance R1, second end of described second resistance R2 and ground, the control end of described second switch pipe 12, hot end and cold end correspondence connect the first end of described second resistance R2, the anode of described battery and the 3rd diode D3, the first end of described 3rd resistance R3 and the second end correspondence connect the first end of described battery and described second resistance R2, the negative electrode of described 3rd diode D3 is the feeder ear P of described switching circuit of power supply 1.
In the preferred embodiment, when charger starts the battery charging to electric motor car, charger can send the radiofrequency signal of carrying power supply signal by its radio-frequency module.Radio-frequency (RF) receiving circuit 4 in electric motor car by antenna to this radiofrequency signal carry out coupling receive after, circuit 44, signal amplification circuit 43, carrier wave demodulation circuit 42 and signal demodulating circuit 41 process the signal that this coupling receives and demodulate the power supply signal of high potential after filtering successively; The power supply signal demodulated is exported to switching circuit of power supply 1 by the signal demodulating circuit 41 in radio-frequency (RF) receiving circuit 4.
And then described switching circuit of power supply 1 receives the power supply signal of this high potential from the first controlled end CTL1; Power supply signal meeting conducting first switching tube 11 of high potential, second end of the second resistance R2 is pulled down to electronegative potential (being equivalent to ground connection), then second switch pipe 12 also conducting, battery exports the first power supply signal through the hot end of second switch pipe 12 and cold end, the 3rd diode D3 from feeder ear P successively; Be that control module 2 is powered by this first power supply signal, start control module 2.
And then the control module 2 worked on power can detect power end (this power end is electrically connected with the feeder ear P of switching circuit of power supply 1), detect whether there is the first power supply signal; And then control module 2 is when this first power supply signal being detected, generates inhibit signal in time, and export this inhibit signal from the second controlled end CTL2 keeping end to switching circuit of power supply 1.
In described switching circuit of power supply 1 is during continuous reception to described power supply signal, can continue to export described first power supply signal to control module 2; For avoiding causing because of the interruption of described power supply signal stopping exporting described first power supply signal to control module 2; Thus before terminating during described power supply signal, switching circuit of power supply 1 need receive inhibit signal from the second controlled end CTL2, conducting first switching tube 11 is continued by this inhibit signal, and then conducting second switch pipe 12, within the duration of inhibit signal, keep battery to the power supply of control module 2; Even if like this after stopping receives described power supply signal, the inhibit signal that switching circuit of power supply 1 can export from the second controlled end CTL2 continuous reception to control module 2, continues to power from feeder ear P to control module 2, forms closed-loop control.When control module 2 wishes to quit work, the second controlled end CTL2 from keeping end to switching circuit of power supply 1 can being stopped to export inhibit signal, disconnecting battery to the power supply of control module 2.
As an embodiment of this preferred embodiment, described first switching tube 11 is NPN type triode Q1; The base stage of described NPN type triode Q1, collector and emitter correspond to the control end of described first switching tube 11, hot end and cold end.
As an embodiment of this preferred embodiment, described first switching tube 11 is N-type metal-oxide-semiconductor, and the grid of described N-type metal-oxide-semiconductor, drain electrode and source electrode correspond to the control end of described first switching tube 11, hot end and cold end.
As an embodiment of this preferred embodiment, described second switch pipe 12 is PNP type triode Q2; The base stage of described PNP type triode Q2, collector and emitter correspond to the control end of described first switching tube 11, hot end and cold end.
As an embodiment of this preferred embodiment, described first switching tube 11 is P type metal-oxide-semiconductor, and the grid of described P type metal-oxide-semiconductor, drain electrode and source electrode correspond to the control end of described first switching tube 11, hot end and cold end.
Fig. 6 shows the another optimization composition structure of the radio-frequency (RF) receiving circuit 4 that the utility model embodiment provides, and for convenience of description, illustrate only the part relevant to the utility model embodiment.
In the utility model one preferred embodiment, as shown in Figure 6, described radio-frequency (RF) receiving circuit 4 also comprises delay circuit; Described delay circuit is serially connected between described signal demodulating circuit 41 and the first controlled end CTL1 of described switching circuit of power supply 1;
Described delay circuit extends the duration of the power supply signal in the described data-signal exported by described signal demodulating circuit 41, and the first controlled end CTL1 to described switching circuit of power supply 1 exports the power supply signal extended.It should be noted that, delay circuit, maintaining the duration of high level for extending power supply signal; Therefore, such as, as long as the circuit of above-mentioned delay circuit function can be realized, integrator delay-time circuit.
In the preferred embodiment, the power supply signal of this prolongation exported to switching circuit of power supply 1 by delay circuit, within the duration of the power supply signal of this prolongation, switching circuit of power supply 1 can receive the inhibit signal that control module 2 is fed back, and then before the duration of power supply signal terminates, can by inhibit signal conducting first switching tube 11, the second switch pipe 12 of high potential, battery is powered by second switch pipe 12 pairs of control modules 2 of conducting; And then after the duration of power supply signal terminates, continue through inhibit signal conducting first switching tube 11, the second switch pipe 12 of high potential, keep battery by the power supply of second switch pipe 12 pairs of control modules 2 of conducting.
Fig. 7 shows the physical circuit of delay circuit, for convenience of description, illustrate only the part relevant to the utility model embodiment.
As an embodiment of this preferred embodiment, as shown in Figure 7, described delay circuit comprises the 11 electric capacity C11, the 11 resistance R11, the 12 resistance R12, the 13 resistance R13, the 14 resistance R14, comparison amplifier U1 and reference power supply VCC1;
The first end of described 11 resistance R11 and the second end correspondence connect the normal phase input end of described radio demodulating circuit and described comparison amplifier U1, the first end of described 11 electric capacity C11 and the second end correspondence connect normal phase input end and the ground of described comparison amplifier U1, the first end of described 12 resistance R12 and the second end correspondence connect the inverting input of described reference power supply VCC1 and described comparison amplifier U1, the first end of described 13 resistance R13 and the second end correspondence connect inverting input and the ground of described comparison amplifier U1, the first end of described 14 resistance R14 and the second end correspondence meet the output of described comparison amplifier U1 and the first controlled end CTL1 of described switching circuit of power supply 1.
In this embodiment, described delay circuit is after receiving the power supply signal that described signal demodulating circuit 41 demodulates, by the RC delay circuit that the 11 electric capacity C11 and the 11 resistance R11 forms, extend the rising edge of power supply signal, and then extend the duration of high potential in power supply signal.And then after passing through the waveform of comparison amplifier U1 correction after RC delay circuit, this comparison amplifier U1 can export the power supply signal of prolongation.Relative to the power supply signal that described radio demodulating circuit exports, the power supply signal of this prolongation has the longer high potential duration.
Fig. 8 shows the physical circuit of signal demodulating circuit 41, for convenience of description, illustrate only the part relevant to the utility model embodiment.
As one embodiment of the present invention, described signal demodulating circuit 41 comprises the amplitude modulation demodulation circuit 411, amplifying circuit 412 and the shaping circuit 413 that are electrically connected successively; Described amplitude modulation demodulation circuit 411 also connects described carrier wave demodulation circuit, and described shaping circuit 413 also connects described power supply, and described shaping circuit 413 is external described control module and described switching circuit of power supply also.
For the amplitude modulation demodulation circuit 411 in described signal demodulating circuit 41, described amplitude modulation demodulation circuit 411 carries out amplitude demodulation, to the signal that described amplifying circuit 412 output amplitude demodulates to the data-signal unloading ripple described in access.
In the preferred embodiment, the physical circuit of amplitude modulation demodulation circuit 411 is not limited, as long as can realize carrying out amplitude demodulation to the described data-signal unloading ripple.
As an embodiment of amplitude modulation demodulation circuit 411, described amplitude modulation demodulation circuit 411 has amplitude modulation input and amplitude modulation output, and described amplitude modulation input and described amplitude modulation output correspondence connect described carrier wave demodulation circuit and described amplifying circuit 412; Described amplitude modulation demodulation circuit 411 unloads the data-signal of ripple from described amplitude modulation input access described in described carrier wave demodulation circuit exports, and exports the signal that described amplitude demodulation goes out from described amplitude modulation output to described amplifying circuit 412;
Described amplitude modulation demodulation circuit 411 comprises the 43 electric capacity, the 42 electric capacity, the 48 resistance and the 49 resistance;
The first end of described 49 resistance and the second end correspond to amplitude modulation input and the amplitude modulation output of described amplitude modulation demodulation circuit 411, the first end of described 43 electric capacity and the second end correspondence connect first end and the ground of described 49 resistance, described 42 electric capacity and described 49 resistor coupled in parallel, the first end of described 48 resistance and the second end correspondence connect the second end and the ground of described 49 resistance.
In this embodiment, mainly contain the 43 electric capacity, the 42 electric capacity and the 48 resistance composition envelope detection circuit, carry out demodulation to by the data-signal unloading ripple described in described carrier wave demodulation circuit output.
For the amplifying circuit 412 in described signal demodulating circuit 41, described amplifying circuit 412 carries out signal amplification to the signal that described amplitude demodulation goes out, and outputs signal amplifying signal to described shaping circuit 413.
In the preferred embodiment, the physical circuit of amplifying circuit 412 is not limited, amplify as long as can realize carrying out signal to the signal that described amplitude demodulation goes out.
As an embodiment of amplifying circuit 412, described amplifying circuit 412 has amplification input and amplifies output, and described amplification input and described amplification output correspondence connect described amplitude modulation demodulation circuit 411 and described shaping circuit 413; Described amplifying circuit 412 accesses from described amplification input the signal that the described amplitude demodulation that exported by described amplitude modulation demodulation circuit 411 goes out, and exports described signal amplifying signal from described amplification output to described shaping circuit 413;
Described amplifying circuit 412 comprises: the 3rd amplifier, the 46 resistance and the 47 resistance;
The in-phase input end of described 3rd amplifier and output are respectively the amplification input of described amplifying circuit 412 and amplify output, the first end of described 47 resistance and the second end correspondence connect inverting input and the ground of described 3rd amplifier, and the first end of described 46 resistance and the second end correspondence connect inverting input and and the output of described 3rd amplifier.
In this embodiment, the circuit be made up of the 3rd amplifier, the 46 resistance and the 47 resistance carries out signal specified multiple amplification (this specified multiple is determined by the resistance value ratio of the 46 resistance and the 47 resistance).
For the shaping circuit 413 in described signal demodulating circuit 41, described shaping circuit 413 compares and enlarges described signal amplifying signal and obtains described data-signal, exports described data-signal to described control module and described switching circuit of power supply.
In the preferred embodiment, the physical circuit of shaping circuit 413 is not limited, as long as can realize comparing and enlarging described signal amplifying signal and obtaining described data-signal.
As an embodiment of shaping circuit 413, described shaping circuit 413 has shaping power end, shaping input and shaping output, described shaping input and power end correspondence connect described amplifying circuit 412 and described power supply, and described shaping output is external described control module and described switching circuit of power supply respectively; Described shaping circuit 413 accesses the described signal amplifying signal exported by described amplifying circuit 412 from described shaping input, export described data-signal from described shaping output to described control module and described switching circuit of power supply;
Described shaping circuit 413 comprises: the 41 resistance, the 42 resistance, the 43 resistance, the 44 resistance, the 45 resistance, the 41 electric capacity and the second amplifier;
The first end of described 41 electric capacity is the shaping input of described shaping circuit 413, the first end of described 42 resistance is the shaping power end of described shaping circuit 413, the output of described second amplifier is the shaping output of described shaping circuit 413, the first end of described 45 resistance and the second end correspondence connect the second end and the ground of described 41 electric capacity, the first end of described 44 resistance and the second end correspondence connect the second end of described 41 electric capacity and the second end of described 42 resistance, the first end of described 43 resistance and the second end correspondence connect the second end and the ground of described 41 electric capacity, the first end of described 41 resistance and the second end correspondence connect normal phase input end and the output of described second amplifier, the normal phase input end of the second amplifier described in first termination of described 45 resistance.
In this embodiment, 41 resistance, the 42 resistance, the 43 resistance, the 44 resistance, the 45 resistance are all larger, therefore, by power supply for the inverting input of the second amplifier provides reference voltage, shaping is compared to the described signal amplifying signal that the second end through the 41 electric capacity accesses from the positive input of the second amplifier.
The utility model embodiment also provides a kind of electric motor car, and described electric motor car comprises above-mentioned radio-frequency (RF) receiving circuit 4, control module 2 and switching circuit of power supply 1.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; make some equivalent alternative or obvious modification without departing from the concept of the premise utility; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the utility model is determined by submitted to claims.
Claims (10)
1. a radio-frequency (RF) receiving circuit, is characterized in that, described radio-frequency (RF) receiving circuit comprises power supply, antenna, filter circuit, signal amplification circuit, carrier wave demodulation circuit and signal demodulating circuit; Described power supply is electrically connected with described signal amplification circuit, described carrier wave demodulation circuit and described signal demodulating circuit respectively, described antenna, described filter circuit, described signal amplification circuit, described carrier wave demodulation circuit and described signal demodulating circuit are electrically connected successively, the external control module of described signal demodulating circuit and switching circuit of power supply;
Described filter circuit receives the radiofrequency signal sent by charger by antenna, carry out filtering, to the modulated data signal that described signal amplification circuit output filtering obtains to the radiofrequency signal received frequency centered by carrier frequency;
The described modulated data signal of described signal amplification circuit to access carries out signal amplification and the modulated data signal be amplified, and exports the modulated data signal of described amplification to described carrier wave demodulation circuit;
The modulated data signal of described carrier wave demodulation circuit to the described amplification of access is carried out carrier wave demodulation and obtains unloading the data-signal of ripple, unloads the data-signal of ripple to described signal demodulating circuit described in exporting;
Described signal demodulating circuit carries out signal receiving to the data-signal unloading ripple described in access and obtains data-signal, exports described data-signal to described control module and described switching circuit of power supply.
2. radio-frequency (RF) receiving circuit as claimed in claim 1, it is characterized in that, described radio-frequency (RF) receiving circuit also comprises electric source filter circuit; Described electric source filter circuit is connected between the power end of described power supply and described signal amplification circuit, and described electric source filter circuit is also connected between the demodulation power end of described power supply and described carrier wave demodulation circuit.
3. radio-frequency (RF) receiving circuit as claimed in claim 1, it is characterized in that, described signal demodulating circuit comprises the amplitude modulation demodulation circuit, amplifying circuit and the shaping circuit that are electrically connected successively; Described amplitude modulation demodulation circuit connects described carrier wave demodulation circuit, and described shaping circuit connects described power supply, the external described control module of described shaping circuit and described switching circuit of power supply;
Described amplitude modulation demodulation circuit carries out amplitude demodulation, to the signal that described amplifying circuit output amplitude demodulates to the data-signal unloading ripple described in access;
Described amplifying circuit carries out signal amplification to the signal that described amplitude demodulation goes out, to described shaping circuit output signal amplifying signal;
Described shaping circuit compares and enlarges described signal amplifying signal and obtains described data-signal, exports described data-signal to described control module and described switching circuit of power supply.
4. radio-frequency (RF) receiving circuit as claimed in claim 3, it is characterized in that, described amplitude modulation demodulation circuit has amplitude modulation input and amplitude modulation output, and described amplitude modulation input and described amplitude modulation output correspondence connect described carrier wave demodulation circuit and described amplifying circuit; Described amplitude modulation demodulation circuit unloads the data-signal of ripple from described amplitude modulation input access described in described carrier wave demodulation circuit exports, and exports the signal that described amplitude demodulation goes out from described amplitude modulation output to described amplifying circuit;
Described amplitude modulation demodulation circuit comprises the 43 electric capacity, the 42 electric capacity, the 48 resistance and the 49 resistance;
The first end of described 49 resistance and the second end correspond to amplitude modulation input and the amplitude modulation output of described amplitude modulation demodulation circuit, the first end of described 43 electric capacity and the second end correspondence connect first end and the ground of described 49 resistance, described 42 electric capacity and described 49 resistor coupled in parallel, the first end of described 48 resistance and the second end correspondence connect the second end and the ground of described 49 resistance.
5. radio-frequency (RF) receiving circuit as claimed in claim 3, is characterized in that, described amplifying circuit has amplification input and amplifies output, and described amplification input and described amplification output correspondence connect described amplitude modulation demodulation circuit and described shaping circuit; Described amplifying circuit accesses from described amplification input the signal that the described amplitude demodulation that exported by described amplitude modulation demodulation circuit goes out, and exports described signal amplifying signal from described amplification output to described shaping circuit;
Described amplifying circuit comprises: the 3rd amplifier, the 46 resistance and the 47 resistance;
The in-phase input end of described 3rd amplifier and output are respectively the amplification input of described amplifying circuit and amplify output, the first end of described 47 resistance and the second end correspondence connect inverting input and the ground of described 3rd amplifier, and the first end of described 46 resistance and the second end correspondence connect inverting input and and the output of described 3rd amplifier.
6. radio-frequency (RF) receiving circuit as claimed in claim 3, it is characterized in that, described shaping circuit has shaping power end, shaping input and shaping output, described shaping input and described shaping power end correspondence connect described amplifying circuit and described power supply, and described shaping output is external described control module and described switching circuit of power supply respectively; Described shaping circuit accesses the described signal amplifying signal exported by described amplifying circuit from described shaping input, export described data-signal from described shaping output to described control module and described switching circuit of power supply;
Described shaping circuit comprises: the 41 resistance, the 42 resistance, the 43 resistance, the 44 resistance, the 45 resistance, the 41 electric capacity and the second amplifier;
The first end of described 41 electric capacity is the shaping input of described shaping circuit, the first end of described 42 resistance is the shaping power end of described shaping circuit, the output of described second amplifier is the shaping output of described shaping circuit, the first end of described 45 resistance and the second end correspondence connect the second end and the ground of described 41 electric capacity, the first end of described 44 resistance and the second end correspondence connect the second end of described 41 electric capacity and the second end of described 42 resistance, the first end of described 43 resistance and the second end correspondence connect the second end and the ground of described 41 electric capacity, the first end of described 41 resistance and the second end correspondence connect normal phase input end and the output of described second amplifier, the normal phase input end of the second amplifier described in first termination of described 45 resistance.
7. radio-frequency (RF) receiving circuit as claimed in claim 1, is characterized in that, described control module has power end and keeps end; Described switching circuit of power supply has the first controlled end, the second controlled end and feeder ear, the output of signal demodulating circuit described in described first controlled termination, and described second controlled end and described feeder ear correspondence connect maintenance end and the power end of described control module;
Described switching circuit of power supply during the power supply signal in the described data-signal exported by described signal demodulating circuit detected from the first controlled end in export the first power supply signal from described feeder ear, export second source signal from described feeder ear when then receiving from described second controlled end the inhibit signal exported by described control module.
8. radio-frequency (RF) receiving circuit as claimed in claim 7, it is characterized in that, described switching circuit of power supply comprises: battery, the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance, the first switching tube and second switch pipe;
The anode of described first diode is the first controlled end of described switching circuit of power supply, the anode of described second diode is the second controlled end of described switching circuit of power supply, the negative electrode of described first diode and the negative electrode of described second diode all connect the first end of described first resistance, the control end of described first switching tube, hot end and cold end correspondence connect the second end of described first resistance, second end of described second resistance and ground, the control end of described second switch pipe, hot end and cold end correspondence connect the first end of described second resistance, the anode of described battery and the 3rd diode, the first end of described 3rd resistance and the second end correspondence connect the first end of described battery and described second resistance, the negative electrode of described 3rd diode is the feeder ear of described switching circuit of power supply.
9. radio-frequency (RF) receiving circuit as claimed in claim 8, is characterized in that,
Described radio-frequency (RF) receiving circuit also comprises delay circuit; Described delay circuit is serially connected between described signal demodulating circuit and the first controlled end of described switching circuit of power supply;
Described delay circuit extends the duration of the power supply signal exported by described signal demodulating circuit, and the first controlled end to described switching circuit of power supply exports the power supply signal extended.
10. an electric motor car, is characterized in that, described electric motor car comprises radio-frequency (RF) receiving circuit, control module and switching circuit of power supply described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424993.0U CN204205625U (en) | 2014-07-30 | 2014-07-30 | Radio-frequency (RF) receiving circuit and electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424993.0U CN204205625U (en) | 2014-07-30 | 2014-07-30 | Radio-frequency (RF) receiving circuit and electric motor car |
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| Publication Number | Publication Date |
|---|---|
| CN204205625U true CN204205625U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420424993.0U Expired - Fee Related CN204205625U (en) | 2014-07-30 | 2014-07-30 | Radio-frequency (RF) receiving circuit and electric motor car |
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| CN (1) | CN204205625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054492A (en) * | 2017-12-01 | 2018-05-18 | 海宁海微电子科技有限公司 | A kind of antenna for mobile phone tuning circuit |
-
2014
- 2014-07-30 CN CN201420424993.0U patent/CN204205625U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054492A (en) * | 2017-12-01 | 2018-05-18 | 海宁海微电子科技有限公司 | A kind of antenna for mobile phone tuning circuit |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 |