CN104599475A - Radio frequency remote control device - Google Patents
Radio frequency remote control device Download PDFInfo
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- CN104599475A CN104599475A CN201510057255.6A CN201510057255A CN104599475A CN 104599475 A CN104599475 A CN 104599475A CN 201510057255 A CN201510057255 A CN 201510057255A CN 104599475 A CN104599475 A CN 104599475A
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Abstract
The invention discloses a radio frequency remote control device. A first NPN biopolar triode, a second NPN biopolar triode and an acoustic surface filter are arranged in a radio frequency emission circuit, wherein the first NPN biopolar triode is used for performing power amplification on a serial data signal generated by a coding circuit, the second NPN biopolar triode is used for adjusting the frequency of the power-amplified serial data signal under the frequency amplification action, the acoustic surface filter is used for loading the frequency-adjusted serial data signal onto waveform with acoustic surface filter a preset frequency so as to obtain a radio frequency signal with a preset frequency, therefore, the radio frequency remote control device can have remote control distance up to 500m or even further, without any dead corners, so that a user can effectively operate electronic equipment with radio frequency remote control device at further remote control distance in any direction.
Description
Technical field
The present invention relates to technical field of integrated circuits, particularly relate to a kind of wireless radio frequency remote control device.
Background technology
At present, a lot of electronic equipment, such as televisor, Set Top Box, air-conditioning, DVD etc. are furnished with telechiric device, carry out operation bring facility to user to electronic equipment.
But, in prior art, telechiric device many employings infrared remote-controlled transmitting and receiving mode, this remote control mode implements and is easy to, and be also the most cheap remote control mode, but adopt the remote control distance of the telechiric device of this remote control mode closer (at about 10 meters), angle can not too partially (namely there is dead angle), otherwise make user effectively can not operate electronic equipment.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of wireless radio frequency remote control device, the closer technical matters with there is dead angle with the remote control distance solving telechiric device of the prior art.
The embodiment of the present invention provides a kind of wireless radio frequency remote control device, comprise: wireless radio transmission module and less radio-frequency receiver module, wherein, described wireless radio transmission module comprises coding circuit and wireless radio transmission circuit, described coding circuit is used for encoding to the data-signal of input and producing serial data signal, described serial data signal is transformed into the radiofrequency signal of predeterminated frequency and is transmitted to described less radio-frequency receiver module by described wireless radio transmission circuit, described less radio-frequency receiver module is used for the described radiofrequency signal received convert serial data signal to and decode to described serial data signal,
Described wireless radio transmission circuit at least comprises a NPN double pole triode, 2nd NPN double pole triode and SAW (Surface Acoustic Wave) filter, wherein, the base stage of a described NPN double pole triode is connected with described coding circuit, the grounded emitter of a described NPN double pole triode, vibrate with first of the described SAW (Surface Acoustic Wave) filter respectively emitter of pin and described 2nd NPN double pole triode of the collector of a described NPN double pole triode is connected, the described base stage of the 2nd NPN double pole triode and second of the described SAW (Surface Acoustic Wave) filter pin that vibrates links together and is connected with the first power supply in wireless radio transmission module, the collector of described 2nd NPN double pole triode connects described first power supply, the power pins of described SAW (Surface Acoustic Wave) filter connects described first power supply.
Further, described wireless radio transmission circuit also comprises: the first capacitor, the second capacitor, the 3rd capacitor and emitting antenna, wherein, one end of described first capacitor and first of described SAW (Surface Acoustic Wave) filter pin that vibrates is connected, the other end of described first capacitor, the two ends of described second capacitor link together with one end of described 3rd capacitor and are connected with described first power supply, and the other end of described 3rd capacitor is connected with described emitting antenna.
Further, described wireless radio transmission circuit also comprises: the first resistance, the second resistance and the 3rd resistance, wherein, one end of described first resistance is connected with described coding circuit, the other end of described first resistance is connected with the base stage of a described NPN double pole triode and one end of described second resistance respectively, the other end ground connection of described second resistance, one termination first power supply of described 3rd resistance, the described other end of the 3rd resistance and second of the described SAW (Surface Acoustic Wave) filter pin that vibrates is connected.
Further, described less radio-frequency receiver module comprises less radio-frequency receiving circuit, radio frequency decode circuit and parallel turns serial circuit;
Described less radio-frequency receiving circuit for receiving the radiofrequency signal of described wireless radio transmission circuit transmission, and converts described radiofrequency signal to serial data signal;
Described radio frequency decode circuit is used for decoding to the described serial data signal received and exporting parallel data signal;
The described parallel serial circuit that turns converts serial data signal to for the parallel data signal exported by described radio frequency decode circuit.
Further, described radio frequency decode circuit at least comprises decoding chip, and the described parallel serial circuit that turns at least comprises and parallelly turns serial chip, and the pin of described decoding chip outputting data signals is connected with the described pin turning serial chip input data signal that walks abreast.
Further, the figure place inputting the parallel data signal of described coding circuit equals the figure place of the parallel data signal that described radio frequency decode circuit exports.
Further, the figure place of described parallel data signal is 6.
Further, a described NPN double pole triode is power amplification triode, and described 2nd NPN double pole triode is frequency amplifying triode.
Further, described first power supply is regulated power supply.
Further, the predeterminated frequency of described radiofrequency signal is 315MHz.
The wireless radio frequency remote control device that the embodiment of the present invention provides, by arranging a NPN double pole triode in wireless radio transmission circuit, 2nd NPN double pole triode and SAW (Surface Acoustic Wave) filter, the serial data signal that wherein coding circuit produces by a NPN double pole triode carries out power amplification, the frequency of the serial data signal after power amplification is regulated again through the frequency amplification of the 2nd NPN double pole triode, again through the carrier wave effect of SAW (Surface Acoustic Wave) filter, serial data signal through regulating frequency is loaded in the waveform with predeterminated frequency to obtain the radiofrequency signal of predeterminated frequency, wireless radio frequency remote control device can be made like this to have remote control distance far away, can reach 500 meters even farther, and without any dead angle, thus user can be made effectively to operate the electronic equipment being furnished with wireless radio frequency remote control device at remote control distance far away and any direction.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation of a kind of wireless radio transmission module that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the another kind of wireless radio transmission module that the embodiment of the present invention provides;
Fig. 3 is the structural representation of a kind of less radio-frequency receiver module that the embodiment of the present invention provides;
Fig. 4 is the structural representation of the another kind of less radio-frequency receiver module that the embodiment of the present invention provides.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
The embodiment of the present invention provides a kind of wireless radio frequency remote control device.Described wireless radio frequency remote control device comprises wireless radio transmission module and less radio-frequency receiver module, wherein, as shown in Figure 1, wireless radio transmission module comprises coding circuit 11 and wireless radio transmission circuit 12, described coding circuit 11 is for encoding to the data-signal of input and produce serial data signal, described serial data signal is transformed into the radiofrequency signal of predeterminated frequency and is transmitted to described less radio-frequency receiver module by described wireless radio transmission circuit 12, described less radio-frequency receiver module is used for the described radiofrequency signal received convert serial data signal to and decode to described serial data signal, described wireless radio transmission circuit 12 at least comprises a NPN double pole triode QC1, 2nd NPN double pole triode QC2 and SAW (Surface Acoustic Wave) filter A1, wherein, the base stage of a described NPN double pole triode QC1 is connected with described coding circuit 11, the grounded emitter of a described NPN double pole triode QC1, vibrate with first of the described SAW (Surface Acoustic Wave) filter A1 respectively emitter of pin a1 and described 2nd NPN double pole triode QC2 of the collector of a described NPN double pole triode QC1 is connected, base stage and second of the described SAW (Surface Acoustic Wave) filter A1 of the described 2nd NPN double pole triode QC2 pin a2 that vibrates links together and is connected with the first power vd D1 in wireless radio transmission module, the collector of described 2nd NPN double pole triode QC2 meets described first power vd D1, the power pins a3 of described SAW (Surface Acoustic Wave) filter A1 meets described first power vd D1.
In embodiments of the present invention, a described NPN double pole triode QC1 is power amplification triode, and described 2nd NPN double pole triode QC2 is frequency amplifying triode.Particularly, in actual design, the model that a NPN double pole triode QC1 can choose is S8050, and the model that the 2nd NPN double pole triode QC2 can choose is the triode of 2SC3356.In addition, the capacitance of the first capacitor C1 can be taken as 10PF, the capacitance of the second capacitor C2 can be taken as 2.2PF, the capacitance of the 3rd capacitor C3 can be taken as 10PF, in actual design, also can set the capacitance of the first capacitor C1, the second capacitor C2 and the 3rd capacitor C3, in this no limit.
The serial data signal produced by coding circuit 11, through a NPN double pole triode QC1, this serial data signal is carried out power amplification, the frequency of the serial data signal after power amplification is regulated again through the frequency amplification of the 2nd NPN double pole triode QC2, again through the carrier wave effect of SAW (Surface Acoustic Wave) filter A1, serial data signal through regulating frequency is loaded into the radiofrequency signal obtaining predeterminated frequency in the waveform with predeterminated frequency, and by this emission of radio frequency signals to less radio-frequency receiver module.As mentioned above, the serial data signal that coding circuit 11 produces obtains radiofrequency signal and this emission of radio frequency signals is gone out after the power amplification and frequency adjustment of wireless radio transmission circuit 12, wireless radio transmission module can be made like this to have remote control distance far away, can reach 500 meters even farther, and without any dead angle, thus user can be made effectively to operate the electronic equipment being furnished with wireless radio frequency remote control device at remote control distance far away and any direction.
In embodiments of the present invention, described first power vd D1 is regulated power supply.Wherein, the voltage of the first power vd D1 can be 5V to 12V, also can be higher voltage, wherein, first power vd D1 can by the combination of the power supply with fixed voltage and an adjustable resistance or multiple adjustable resistance or fixed value resistance and adjustable resistance (connected mode can in parallel, connect or parallel connection and serial connection is combined) connect to realize, then the resistance value passing through adjustment adjustable resistance can obtain the voltage of the first required power vd D1.By regulating the voltage of the first power vd D1, and its voltage is increased, the emissive power of wireless radio transmission circuit can be increased, thus the transmitting range of wireless radio transmission circuit can be increased, and then the remote control distance of wireless radio transmission module can be made to become farther.It should be noted that, in actual design, according to required remote control distance, the voltage range of the first power vd D1 can be arranged.
In embodiments of the present invention, the predeterminated frequency of described radiofrequency signal can be 315MHz.If the predeterminated frequency of radiofrequency signal is 315MHz, then the model that corresponding surperficial acoustic filter A1 can choose is SAW315.In actual design, also can arrange the 2nd NPN double pole triode QC2 and surperficial acoustic filter A1, and obtain the radiofrequency signal that predeterminated frequency is other value.
Further, as shown in Figure 1, described wireless radio transmission circuit also comprises: the first capacitor C1, the second capacitor C2, the 3rd capacitor C3 and emitting antenna ANT1, wherein, described one end of first capacitor C1 and first of the described SAW (Surface Acoustic Wave) filter A1 pin a1 that vibrates is connected, the other end of described first capacitor C1, the two ends of described second capacitor C2 link together with one end of described 3rd capacitor C3 and are connected with described first power vd D1, and the other end of described 3rd capacitor C3 is connected with described emitting antenna ANT1.Particularly, in FIG, the radiofrequency signal of the predeterminated frequency obtained by the carrier wave effect of SAW (Surface Acoustic Wave) filter A1, after the oscillation action of the first capacitor C1, the second capacitor C2 and the 3rd capacitor C3, is transmitted to less radio-frequency receiver module from emitting antenna ANT1.
Further, as shown in Figure 1, described wireless radio transmission circuit also comprises: the first resistance R1, the second resistance R2 and the 3rd resistance R3, wherein, one end of described first resistance R1 is connected with described coding circuit 11, the other end of described first resistance R1 is connected with the base stage of a described NPN double pole triode QC1 and one end of described second resistance R2 respectively, the other end ground connection of described second resistance R2, the one termination first power vd D1 of described 3rd resistance R3, the described other end of the 3rd resistance R3 and second of the described SAW (Surface Acoustic Wave) filter A1 pin a2 that vibrates is connected.Have the first resistance R1 of dividing potential drop effect and the second resistance R2 and the resistance value of suitably selected first resistance R1 and the second resistance R2 by arranging, the serial data signal that coding circuit 11 can be enable to produce controls conducting or the cut-off state of a NPN double pole triode QC1 effectively; Also suitably select its resistance value by arranging the 3rd resistance R3 with dividing potential drop effect, the first power vd D1 can control conducting or the cut-off state of the 2nd NPN double pole triode QC2 effectively.Particularly, in actual design, the resistance value of the first resistance R1 and the 3rd resistance R3 can be chosen to be 22K Ω, and the resistance value of the second resistance R2 can be chosen to be 10K Ω, but, also can set according to actual needs, in this no limit.
In embodiments of the present invention, on the basis of Fig. 1, as shown in Figure 2, described coding circuit 11 can comprise coding chip U1, 6 control button (K1 ~ K6), 4th resistance R4 is to the 12 resistance R12, one PNP double pole triode QC3, LED, 4th capacitor C4 and the 5th capacitor C5, wherein 6 control button (K1 ~ K6) respectively with 6 pin (A11/D0 for input data signal of coding chip U1, A10/D1, A9/D2, A8/D3, A7/D4 with A6/D5) be connected one to one, one end of 4th resistance R4 to the 9th resistance R9 respectively with 6 pin (A11/D0 for input data signal of coding chip U1, A10/D1, A9/D2, A8/D3, A7/D4 with A6/D5) be connected one to one, 4th resistance R4 is to the other end ground connection of the 9th resistance R9, after control button is pressed, first power vd D1 provides power supply through pin VDD for coding chip U1 by a tenth resistance R10 and PNP double pole triode QC3 and the corresponding control button be pressed and makes its work, and when coding chip U1 works, electric current makes LED luminous through the 11 resistance R11, charges to the 4th electric capacity C4 and the 5th electric capacity C5 simultaneously, in addition, pin OSC1 and OSC2 of coding chip U1 couples together through the 12 resistance R12, and coding chip U1 exports serial data signal to wireless radio transmission circuit 12 through its pin DOUT.Control button (K1 ~ K6) because the coding circuit 11 in Fig. 2 comprises 6, therefore, this coding circuit 11 can realize the parallel data signal of input 6.In actual design, the model of above-mentioned coding chip U1 can be chosen for the radio frequency encoding chip PT2262 of the low cost of a kind of CMOS technology manufacture that Taiwan Pu Cheng company produces, the model of the one PNP double pole triode can be chosen for S8550, 4th resistance R4 can elect 10K Ω as to the resistance value of the 9th resistance R9 and the 11 resistance R11, the resistance value of the tenth resistance R10 can elect 22K Ω as, the resistance value of the 12 resistance R12 can elect 4.7M Ω as, the capacitance of the 4th capacitor C4 can elect 10 μ F as, the capacitance of the 5th capacitor C5 can elect 100nF as.
In embodiments of the present invention, as shown in Figure 3, the less radio-frequency receiver module in wireless radio frequency remote control device comprises less radio-frequency receiving circuit 21, radio frequency decode circuit 22 and parallel turns serial circuit 23; Described less radio-frequency receiving circuit 21 for receiving the radiofrequency signal of wireless radio transmission circuit transmission, and converts described radiofrequency signal to serial data signal; Described radio frequency decode circuit 22 is for decoding to the described serial data signal received and export parallel data signal; Describedly parallel turn serial circuit 23 and convert serial data signal to for the parallel data signal exported by described radio frequency decode circuit 22.
Particularly, in actual design, radio frequency decode circuit 22 will match with the coding circuit in wireless radio transmission module and arrange, that is, geocoding in coding circuit is identical with the geocoding in radio frequency decode circuit 22, only in this way, wireless radio frequency remote control device can realize transmitting and receiving radiofrequency signal and effectively operate the electronic equipment being furnished with this wireless radio frequency remote control device.
As mentioned above, serial circuit 23 is turned by arranging to walk abreast in less radio-frequency receiver module, and convert the parallel data signal that radio frequency decode circuit 22 produces to serial data signal, compared with only can producing parallel data signal with less radio-frequency receiver module, GPIO (the General Purpose Input Output of the CPU be connected with the output terminal of less radio-frequency receiver module can be reduced, universal input/output) interface, thus the cost of the CPU be connected with less radio-frequency receiver module can be reduced.It should be noted that, in embodiments of the present invention, less radio-frequency receiver module can be connected with CPU, thus makes wireless radio frequency remote control device can the state of far distance controlled CPU.
As an embodiment of the less radio-frequency receiver module in the present invention, as shown in Figure 4, radio frequency decode circuit 22 at least comprises decoding chip U2, the parallel serial circuit 23 that turns at least comprises and parallelly turns serial chip U3, and the pin (D0 ~ D5) of described decoding chip U2 outputting data signals is connected with the described pin (D0 ~ D5) turning serial chip input data signal that walks abreast.In addition, radio frequency decode circuit 22 also comprises the 13 resistance R13, the 6th capacitor R6 and the 7th capacitor R7, and wherein, second source VDD2 provides power supply by the pin VDD of decoding chip U2 for it; The serial data signal of conversion gained is input to decoding chip U2 through the pin DIN of decoding chip U2 by less radio-frequency receiving circuit 21, wherein, the model of decoding chip U2 can be chosen for the radio frequency decode chip PT2272-L6 of the low cost of a kind of CMOS technology manufacture that Taiwan Pu Cheng company produces, the voltage of second source VDD2 can be 5V, and less radio-frequency receiving circuit 21 can adopt the circuit that can realize corresponding function in prior art to realize.
Parallel turn serial circuit 23 and also comprise the 3rd NPN double pole triode QC4, the 4th NPN double pole triode QC5, the 5th NPN double pole triode QC6, the 14 resistance R14 to the 19 resistance R19, wherein, the collector of the 3rd NPN double pole triode QC4 is connected with the parallel pin/PL turning serial chip U3 and is connected with second source VDD2 by the 14 resistance R14, the base stage of the 3rd NPN double pole triode QC4 is connected with the pin VT of decoding chip U2, the grounded emitter of the 3rd NPN double pole triode QC4; The collector of the 4th NPN double pole triode QC5 is connected with the parallel pin CP turning serial chip U3 and is connected with second source VDD2 by the 15 resistance R15, the base stage of the 4th NPN double pole triode QC5 is connected with the enable input end CLK_CP of the first clock by the 16 resistance R16, the grounded emitter of the 4th NPN double pole triode QC5; The collector of the 5th NPN double pole triode QC6 is connected with the parallel pin/CE turning serial chip U3 and is connected with second source VDD2 by the 17 resistance R17, the base stage of the 5th NPN double pole triode QC6 is connected with the enable input end CLK_CE of second clock by the 18 resistance R18, the grounded emitter of the 5th NPN double pole triode QC6; The parallel pin Q7 turning serial chip U3 is connected with serial data output terminal DATA_SO by the 19 resistance R19, wherein, 3rd NPN double pole triode QC4 to the 5th NPN double pole triode QC6 turns parallel the effect playing level conversion in serial circuit 23, and the first clock enable input end CLK_CP, second clock enable input end CLK_CE are connected with the GPIO interface of corresponding CPU with serial data output terminal DATA_SO.In actual design, the parallel model turning serial chip U3 can be chosen for 74HC165D, the model of the 3rd NPN double pole triode QC4 can choose 2N3904, the model of the 4th NPN double pole triode QC5 and the 5th NPN double pole triode QC6 can choose 2N3906, the resistance value of the 14 resistance R14, the 15 resistance R15 and the 17 resistance R17 can be 4.7K Ω, and the resistance value of the 16 resistance R16, the 18 resistance R18 and the 19 resistance R19 can be 33K Ω.
In embodiments of the present invention, the figure place inputting the parallel data signal of described coding circuit equals the figure place of the parallel data signal that described radio frequency decode circuit exports.Further, the figure place being preferably described parallel data signal is 6.
Next, composition graphs 2 and the principle of work of Fig. 4 to wireless radio frequency remote control device of the present invention are described further.
The serial data signal of the encoded rear generation of the coding chip U1 in coding circuit 11 comprises address code, numeric data code and synchronous code, launch with the form of radiofrequency signal through wireless radio transmission circuit 12 again, after less radio-frequency receiving circuit 21 receives radiofrequency signal, radiofrequency signal is converted to the serial data signal that the decoding chip U2 in radio frequency decode circuit 22 can identify, the address code of decoding chip U2 and the address code of the coding chip U1 comprised in serial data signal are after comparing for twice and checking, if the result checked is that both address codes are completely the same, then the pin VT of decoding chip U2 exports high level signal, meanwhile, the pin of the corresponding outputting data signals of decoding chip U2 also exports high level signal, when coding circuit 11 do not control button press time, coding chip U1 does not connect with the first power vd D1, its pin DOUT output low level signal, so now wireless radio transmission circuit 12 does not work, when there being control button to press, coding chip U1 and the first power vd D1 connects and starts working, its pin DOUT exports modulated serial data signal, when its pin DOUT exports high level signal, wireless radio transmission circuit 12 starting of oscillation also launches radiofrequency signal, when the pin DOUT output low level signal of coding chip U1, wireless radio transmission circuit 12 quits work, therefore, the level of the signal that the pin DOUT that wireless radio transmission circuit 12 is controlled by coding chip U1 completely exports, thus amplitude keying (i.e. ASK modulation) is completed to wireless radio transmission circuit 12, and be equivalent to the amplitude modulation that degree of modulation is 100%.Above-mentioned wireless radio transmission module has remote control distance far away, and without any dead angle, if regulate the voltage of the first power vd D1 and make its voltage increase, then can increase the emissive power of wireless radio transmission circuit, thus the transmitting range of wireless radio transmission circuit can be increased, and then the remote control distance of wireless radio transmission module can be made to become farther.
When wireless radio transmission module normally works, in less radio-frequency receiver module, parallel to turn in serial circuit 23 parallel turns the 6 bit parallel data signals that decoding chip U2 exports by serial chip U3 and change 1 bit serial data-signal into, can greatly reduce the GPIO interface of CPU like this.Because its pin VT during decoding chip U2 outputting data signals exports high level signal, and parallel serial chip U3 its pin/PL when receiving data-signal that turns answers input low level signal, therefore the high level signal that exports of the pin VT of decoding chip U2 is through the anti-phase process of the 4th NPN double pole triode, high level signal can be converted to low level signal to go to control to walk abreast to turn serial chip U3, similarly, the 5th NPN double pole triode be connected with the first clock enable input end CLK_CP and the level conversion effect of the 6th NPN double pole triode be connected with the enable input end CLK_CE of second clock are also parallelly turn the level needs of serial chip U3 in order to meet and design.As can be seen from Figure 4, whole less radio-frequency receiver module is simply effective, the remote control reception to 6 radiofrequency signals can be realized easily, if need the remote control reception function of 12 or more multiposition RF signal, only need to increase decoding chip U2 and the parallel quantity turning serial chip U3, and need the GPIO interface that increases also little in order to the remote control reception function CPU realizing multiposition RF signal, thus the cost of CPU can be reduced.
The wireless radio frequency remote control device that the embodiment of the present invention provides, by arranging a NPN double pole triode in wireless radio transmission circuit, 2nd NPN double pole triode and SAW (Surface Acoustic Wave) filter, the serial data signal that wherein coding circuit produces by a NPN double pole triode carries out power amplification, the frequency of the serial data signal after power amplification is regulated again through the frequency amplification of the 2nd NPN double pole triode, again through the carrier wave effect of SAW (Surface Acoustic Wave) filter, serial data signal through regulating frequency is loaded in the waveform with predeterminated frequency to obtain the radiofrequency signal of predeterminated frequency, wireless radio frequency remote control device can be made like this to have remote control distance far away, can reach 500 meters even farther, and without any dead angle, thus user can be made effectively to operate the electronic equipment being furnished with wireless radio frequency remote control device at remote control distance far away and any direction.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. a wireless radio frequency remote control device, it is characterized in that, comprise: wireless radio transmission module and less radio-frequency receiver module, wherein, described wireless radio transmission module comprises coding circuit and wireless radio transmission circuit, described coding circuit is used for encoding to the data-signal of input and producing serial data signal, described serial data signal is transformed into the radiofrequency signal of predeterminated frequency and is transmitted to described less radio-frequency receiver module by described wireless radio transmission circuit, described less radio-frequency receiver module is used for the described radiofrequency signal received convert serial data signal to and decode to described serial data signal,
Described wireless radio transmission circuit at least comprises a NPN double pole triode, 2nd NPN double pole triode and SAW (Surface Acoustic Wave) filter, wherein, the base stage of a described NPN double pole triode is connected with described coding circuit, the grounded emitter of a described NPN double pole triode, vibrate with first of the described SAW (Surface Acoustic Wave) filter respectively emitter of pin and described 2nd NPN double pole triode of the collector of a described NPN double pole triode is connected, the described base stage of the 2nd NPN double pole triode and second of the described SAW (Surface Acoustic Wave) filter pin that vibrates links together and is connected with the first power supply in wireless radio transmission module, the collector of described 2nd NPN double pole triode connects described first power supply, the power pins of described SAW (Surface Acoustic Wave) filter connects described first power supply.
2. wireless radio frequency remote control device according to claim 1, it is characterized in that, described wireless radio transmission circuit also comprises: the first capacitor, the second capacitor, the 3rd capacitor and emitting antenna, wherein, one end of described first capacitor and first of described SAW (Surface Acoustic Wave) filter pin that vibrates is connected, the other end of described first capacitor, the two ends of described second capacitor link together with one end of described 3rd capacitor and are connected with described first power supply, and the other end of described 3rd capacitor is connected with described emitting antenna.
3. wireless radio frequency remote control device according to claim 2, it is characterized in that, described wireless radio transmission circuit also comprises: the first resistance, the second resistance and the 3rd resistance, wherein, one end of described first resistance is connected with described coding circuit, the other end of described first resistance is connected with the base stage of a described NPN double pole triode and one end of described second resistance respectively, the other end ground connection of described second resistance, one termination first power supply of described 3rd resistance, the described other end of the 3rd resistance and second of the described SAW (Surface Acoustic Wave) filter pin that vibrates is connected.
4. wireless radio frequency remote control device according to any one of claim 1 to 3, is characterized in that, described less radio-frequency receiver module comprises less radio-frequency receiving circuit, radio frequency decode circuit and parallel turns serial circuit;
Described less radio-frequency receiving circuit for receiving the radiofrequency signal of described wireless radio transmission circuit transmission, and converts described radiofrequency signal to serial data signal;
Described radio frequency decode circuit is used for decoding to the described serial data signal received and exporting parallel data signal;
The described parallel serial circuit that turns converts serial data signal to for the parallel data signal exported by described radio frequency decode circuit.
5. wireless radio frequency remote control device according to claim 4, it is characterized in that, described radio frequency decode circuit at least comprises decoding chip, the described parallel serial circuit that turns at least comprises and parallelly turns serial chip, and the pin of described decoding chip outputting data signals is connected with the described pin turning serial chip input data signal that walks abreast.
6. wireless radio frequency remote control device according to claim 4, is characterized in that, the figure place inputting the parallel data signal of described coding circuit equals the figure place of the parallel data signal that described radio frequency decode circuit exports.
7. wireless radio frequency remote control device according to claim 6, is characterized in that, the figure place of described parallel data signal is 6.
8. wireless radio frequency remote control device according to claim 1, is characterized in that, a described NPN double pole triode is power amplification triode, and described 2nd NPN double pole triode is frequency amplifying triode.
9. wireless radio frequency remote control device according to claim 1, is characterized in that, described first power supply is regulated power supply.
10. wireless radio frequency remote control device according to claim 1, is characterized in that, the predeterminated frequency of described radiofrequency signal is 315MHz.
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| CN104599475B (en) | 2018-04-27 |
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