CN104599475B - A kind of wireless radio frequency remote control device - Google Patents
A kind of wireless radio frequency remote control device Download PDFInfo
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- CN104599475B CN104599475B CN201510057255.6A CN201510057255A CN104599475B CN 104599475 B CN104599475 B CN 104599475B CN 201510057255 A CN201510057255 A CN 201510057255A CN 104599475 B CN104599475 B CN 104599475B
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Abstract
The invention discloses a kind of wireless radio frequency remote control device.The present invention in wireless radio transmission circuit by setting the first NPN double pole triodes,2nd NPN double pole triodes and SAW filter,The serial data signal that wherein the first NPN double pole triodes produce coding circuit carries out power amplification,Again the frequency of the serial data signal after power amplification is adjusted by the frequency amplification of the 2nd NPN double pole triodes,Acted on again by the carrier wave of SAW filter,It will be loaded into through overregulating the serial data signal of frequency in the waveform with predeterminated frequency to obtain the radiofrequency signal of predeterminated frequency,It can so cause wireless radio frequency remote control device that there is remote control distance farther out,Can reach 500 meters even it is farther,And without any dead angle,So as to make user effectively be operated to the electronic equipment equipped with wireless radio frequency remote control device in remote control distance farther out and any direction.
Description
Technical field
The present invention relates to technical field of integrated circuits, more particularly to a kind of wireless radio frequency remote control device.
Background technology
At present, many electronic equipments, such as television set, set-top box, air-conditioning, DVD etc. are equipped with remote control, to user couple
Electronic equipment carries out operation and brings facility.
However, in the prior art, remote control uses infrared remote-controlled transmitting and reception pattern more, this remote control mode is real
Now get up to be easy to, and be also generally the least expensive remote control mode, but use the remote control of the remote control of this remote control mode away from
From closer (at 10 meters or so), angle can not too partially (i.e. there are dead angle), otherwise make user can not to electronic equipment into
Row effectively operates.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of wireless radio frequency remote control device, to solve remote control of the prior art
Closer and there are dead angle the technical problem of the remote control distance of device.
The embodiment of the present invention provides a kind of wireless radio frequency remote control device, including：Wireless radio transmission module and less radio-frequency
Receiving module, wherein, the wireless radio transmission module includes coding circuit and wireless radio transmission circuit, the coding circuit
For being encoded to the data-signal of input and producing serial data signal, the wireless radio transmission circuit will be described serial
Data shift signal into predeterminated frequency radiofrequency signal and be transmitted to the less radio-frequency receiving module, the less radio-frequency receives
Module is used to the radiofrequency signal of reception is converted into serial data signal and decodes the serial data signal；
The wireless radio transmission circuit include at least the first NPN double pole triodes, the 2nd NPN double pole triodes and
SAW filter, wherein, the base stage of the first NPN double pole triodes is connected with the coding circuit, the first NPN
The emitter ground connection of double pole triode, the collectors of the first NPN double pole triodes respectively with the sound surface filtering
First vibration pin of device is connected with the emitter of the 2nd NPN double pole triodes, the 2nd NPN double pole triodes
Base stage and the SAW filter the second vibration pin link together and with wireless radio transmission mould in the block first
Power supply connects, and the collector of the 2nd NPN double pole triodes connects first power supply, the power supply of the SAW filter
Pin connects first power supply.
Further, the wireless radio transmission circuit further includes：First capacitor, the second capacitor, the 3rd capacitor
And transmitting antenna, wherein, one end of first capacitor is connected with the first vibration pin of the SAW filter, described
One end of the other end of first capacitor, the both ends of second capacitor and the 3rd capacitor link together and with institute
The connection of the first power supply is stated, the other end of the 3rd capacitor is connected with the transmitting antenna.
Further, the wireless radio transmission circuit further includes：First resistor, second resistance and 3rd resistor, wherein,
One end of the first resistor is connected with the coding circuit, and the other end of the first resistor is double with the first NPN respectively
The base stage of polar form triode is connected with one end of the second resistance, the other end ground connection of the second resistance, the 3rd electricity
One the first power supply of termination of resistance, the other end of the 3rd resistor are connected with the second vibration pin of the SAW filter.
Further, the less radio-frequency receiving module includes radio frequency receiving circuit, radio frequency decoding circuit and parallel
Turn serial circuit；
The radio frequency receiving circuit is used to receiving the radiofrequency signal of the wireless radio transmission circuit transmission, and by institute
State radiofrequency signal and be converted into serial data signal；
The radio frequency decoding circuit is decoded for docking the received serial data signal and exports parallel data
Signal；
The parallel serial circuit that turns is used to the parallel data signal of radio frequency decoding circuit output being converted into serially
Data-signal.
Further, the radio frequency decoding circuit includes at least decoding chip, described parallel to turn serial circuit and include at least
Parallel to turn serial chip, the pin of the decoding chip outputting data signals turns serial chip input data signal parallel with described
Pin connection.
Further, the digit for inputting the parallel data signal of the coding circuit is exported equal to the radio frequency decoding circuit
Parallel data signal digit.
Further, the digit of the parallel data signal is 6.
Further, the first NPN double pole triodes are power amplification triode, the 2nd NPN ambipolar three
Pole pipe is frequency amplifying triode.
Further, first power supply is regulated power supply.
Further, the predeterminated frequency of the radiofrequency signal is 315MHz.
Wireless radio frequency remote control device provided in an embodiment of the present invention, by setting first in wireless radio transmission circuit
NPN double pole triodes, the 2nd NPN double pole triodes and SAW filter, wherein the first NPN double pole triodes will be compiled
The serial data signal that code circuit produces carries out power amplification, then the frequency amplification by the 2nd NPN double pole triodes
, will be through toning to adjust the frequency of the serial data signal after power amplification, then the carrier wave effect by SAW filter
The serial data signal of section frequency is loaded into the waveform with predeterminated frequency to obtain the radiofrequency signal of predeterminated frequency, so may be used
So that wireless radio frequency remote control device has remote control distance farther out, can reach 500 meters it is even farther, and any dead
Angle, so as to make user remote control distance farther out and any direction to the electronic equipment equipped with wireless radio frequency remote control device into
Row effectively operates.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is a kind of structure diagram of wireless radio transmission module provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of another wireless radio transmission module provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of less radio-frequency receiving module provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of another less radio-frequency receiving module provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
It illustrate only part related to the present invention rather than full content in description, attached drawing.
The embodiment of the present invention provides a kind of wireless radio frequency remote control device.The wireless radio frequency remote control device includes less radio-frequency
Transmitting module and less radio-frequency receiving module, wherein, as shown in Figure 1, wireless radio transmission module includes coding circuit 11 and nothing
Line radio frequency transmitter circuitry 12, the coding circuit 11 be used to encode the data-signal of input and produce serial number it is believed that
Number, the serial data signal is transformed into the radiofrequency signal of predeterminated frequency and is transmitted to institute by the wireless radio transmission circuit 12
Less radio-frequency receiving module is stated, the less radio-frequency receiving module is used to the radiofrequency signal of reception being converted into serial data
Signal simultaneously decodes the serial data signal；It is ambipolar that the wireless radio transmission circuit 12 includes at least the first NPN
Triode QC1, the 2nd NPN double pole triodes QC2 and SAW filter A1, wherein, the first NPN double pole triodes
The base stage of QC1 is connected with the coding circuit 11, the emitter ground connection of the first NPN double pole triodes QC1, and described first
The collector of NPN double pole triodes QC1 vibrates pin a1 and described second with the first of the SAW filter A1 respectively
The emitter connection of NPN double pole triodes QC2, base stage and the sound surface of the 2nd NPN double pole triodes QC2 are filtered
The second vibration pin a2 of ripple device A1 links together and is connected with wireless radio transmission mould the first power vd D1 in the block, described
The collector of 2nd NPN double pole triodes QC2 connects the first power vd D1, the power pins of the SAW filter A1
A3 meets the first power vd D1.
In embodiments of the present invention, the first NPN double pole triodes QC1 is power amplification triode, described second
NPN double pole triodes QC2 is frequency amplifying triode.Specifically, in actual design, the first NPN double pole triodes QC1
The model S8050 that can be chosen, the triode for the model 2SC3356 that the 2nd NPN double pole triodes QC2 can choose.
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 3rd
The capacitance of capacitor C3 can be taken as 10PF, in actual design, can also to the first capacitor C1, the second capacitor C2 and
The capacitance of 3rd capacitor C3 is set, and is not limited thereto.
The serial data signal produced by coding circuit 11, by the first NPN double pole triodes QC1 by the serial data
Signal carries out power amplification, then adjusts after power amplification by the frequency amplification of the 2nd NPN double pole triodes QC2
Serial data signal frequency, then by SAW filter A1 carrier wave act on, by the serial data through overregulating frequency
Signal loading obtains the radiofrequency signal of predeterminated frequency into the waveform with predeterminated frequency, and by the emission of radio frequency signals to wireless
Receiver Module.As described above, the serial data signal that coding circuit 11 produces passes through the work(of wireless radio transmission circuit 12
Rate amplifies and obtains radiofrequency signal after frequency adjusting and the emission of radio frequency signals is gone out, and can so cause wireless radio transmission
Module has remote control distance farther out, can reach 500 meters it is even farther, and without any dead angle, so as to make user exist
Remote control distance and any direction farther out effectively operates the electronic equipment equipped with wireless radio frequency remote control device.
In embodiments of the present invention, the first power vd D1 is regulated power supply.Wherein, the voltage of the first power vd D1 can
Think 5V to 12V, or the voltage of higher, wherein, the first power vd D1 can by the power supply with fixed voltage with
One adjustable resistance either multiple adjustable resistances or fixed value resistance and adjustable resistance combination (connection mode can be simultaneously
Connection, in series or in parallel and series combination) connection realizes, then required for being obtained by adjusting the resistance value of adjustable resistance
The first power vd D1 voltage.By adjusting the voltage of the first power vd D1, and increase its voltage, can increase and wirelessly penetrate
The transmission power for the transmit-receive radio road that takes place frequently, so as to increase the transmitting range of wireless radio transmission circuit, and then can make wirelessly to penetrate
The remote control distance of frequency transmitting module becomes farther.It should be noted that in actual design, can according to required remote control away from
From being configured to the voltage range of the first power vd D1.
In embodiments of the present invention, the predeterminated frequency of the radiofrequency signal can be 315MHz.If radiofrequency signal is pre-
If frequency is 315MHz, then corresponding surface acoustic filter A1 can choose model SAW315.In actual design, also may be used
To be configured to the 2nd NPN double pole triodes QC2 and surface acoustic filter A1, and obtain predeterminated frequency penetrating for other values
Frequency signal.
Further, as shown in Figure 1, the wireless radio transmission circuit further includes：First capacitor C1, the second capacitor
C2, the 3rd capacitor C3 and transmitting antenna ANT1, wherein, one end and the SAW filter A1 of the first capacitor C1
The first vibration pin a1 connections, the other end of the first capacitor C1, the both ends of the second capacitor C2 and described the
One end of three capacitor C3 links together and is connected with the first power vd D1, the other end of the 3rd capacitor C3 with
The transmitting antenna ANT1 connections.Specifically, in Fig. 1, acted on by the carrier wave of SAW filter A1 obtained default
The radiofrequency signal of frequency, after the oscillation action of the first capacitor C1, the second capacitor C2 and the 3rd capacitor C3, from transmitting day
Line ANT1 is transmitted to less radio-frequency receiving module.
Further, as shown in Figure 1, the wireless radio transmission circuit further includes：First resistor R1, second resistance R2 and
3rd resistor R3, wherein, one end of the first resistor R1 is connected with the coding circuit 11, and the first resistor R1's is another
End is connected with the base stage of the first NPN double pole triodes QC1 and one end of the second resistance R2 respectively, second electricity
Hinder R2 the other end ground connection, the 3rd resistor R3 one termination the first power vd D1, the other end of the 3rd resistor R3 with
The second vibration pin a2 connections of the SAW filter A1.By setting the first resistor R1 and second acted on partial pressure
Resistance R2 and the resistance value for suitably selecting first resistor R1 and second resistance R2, the serial number that can produce coding circuit 11
It is believed that it number can efficiently control the on or off state of the first NPN double pole triodes QC1；There is partial pressure by setting
The 3rd resistor R3 of effect simultaneously suitably selectes its resistance value, and it is ambipolar that the first power vd D1 can efficiently control the 2nd NPN
The on or off state of triode QC2.Specifically, in actual design, the resistance of first resistor R1 and 3rd resistor R3
Value can be chosen to be 22K Ω, and the resistance value of second resistance R2 can be chosen to be 10K Ω, however, it is also possible to according to be actually needed into
Row setting, is not limited thereto.
In embodiments of the present invention, on the basis of Fig. 1, as shown in Fig. 2, the coding circuit 11 can include coding core
Piece U1,6 control buttons (K1~K6), the 4th resistance R4 to the 12nd resistance R12, the first PNP double pole triodes QC3, hair
Optical diode LED, the 4th capacitor C4 and the 5th capacitor C5, wherein 6 control buttons (K1~K6) respectively with coding chip
6 of U1 are used for the pin (A11/D0, A10/D1, A9/D2, A8/D3, A7/D4 and A6/D5) of input data signal one to one
Connection, the 4th resistance R4 to one end of the 9th resistance R9 are used for the pin of input data signal with 6 of coding chip U1 respectively
(A11/D0, A10/D1, A9/D2, A8/D3, A7/D4 and A6/D5) is connected one to one, and the 4th resistance R4 is to the 9th resistance R9's
The other end is grounded；After control button is pressed, the first power vd D1 passes through the tenth resistance R10 and the first PNP double pole triodes
QC3 and the control button being accordingly pressed provide power supply for coding chip U1 through pin VDD and make its work, and in coding core
When piece U1 works, electric current makes Light-emitting diode LED shine through the 11st resistance R11, while to the 4th capacitance C4 and the 5th capacitance
C5 charges；In addition, the pin OSC1 and OSC2 of coding chip U1 are connected by the 12nd resistance R12, and coding
Chip U1 exports serial data signal to wireless radio transmission circuit 12 by its pin DOUT.Due to the coding circuit in Fig. 2
11 include 6 control buttons (K1~K6), and therefore, which can realize the parallel data signal of input 6.In reality
In the design of border, the model of above-mentioned coding chip U1 can be chosen for a kind of CMOS technology manufacture of Taiwan Pu Cheng companies production
The radio frequency encoding chip PT2262 of low cost, the model of the first PNP double pole triodes can be chosen for S8550, the 4th resistance
The resistance value of R4 to the 9th resistance R9 and the 11st resistance R11 can elect 10K Ω as, and the resistance value of the tenth resistance R10 can be with
Elect 22K Ω as, the resistance value of the 12nd resistance R12 can elect 4.7M Ω as, and the capacitance of the 4th capacitor C4 can elect 10 μ as
F, 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 receiving module in wireless radio frequency remote control device includes nothing
Line RF receiving circuit 21, radio frequency decoding circuit 22 and turn serial circuit 23 parallel；The radio frequency receiving circuit 21 is used for
The radiofrequency signal of wireless radio transmission circuit transmission is received, and the radiofrequency signal is converted into serial data signal；It is described to penetrate
Frequency decoding circuit 22 is decoded for docking the received serial data signal and exports parallel data signal；It is described parallel
Turn serial circuit 23 to be used to the parallel data signal that the radio frequency decoding circuit 22 exports being converted into serial data signal.
Specifically, in actual design, radio frequency decoding circuit 22 will match somebody with somebody with wireless radio transmission mould coding circuit in the block
To setting, that is to say, that the geocoding in coding circuit is identical with the geocoding in radio frequency decoding circuit 22, only
Have in this way, wireless radio frequency remote control device can realize transmitting and reception radiofrequency signal and to equipped with the wireless radio frequency remote control device
Electronic equipment effectively operated.
As described above, turning serial circuit 23 parallel by being set in less radio-frequency receiving module, and radio frequency is decoded into electricity
The parallel data signal that road 22 produces is converted into serial data signal, and parallel data can be only produced with less radio-frequency receiving module
Signal is compared, it is possible to reduce GPIO (the General Purpose for the CPU being connected with the output terminal of less radio-frequency receiving module
Input Output, universal input/output) interface, so as to reduce the CPU being connected with less radio-frequency receiving module into
This.It should be noted that in embodiments of the present invention, less radio-frequency receiving module can be connected with CPU, so that less radio-frequency
Remote control can be with the state of far distance controlled CPU.
As an embodiment of the less radio-frequency receiving module in the present invention, as shown in figure 4, radio frequency decoding electricity
Road 22 includes at least decoding chip U2, turn parallel serial circuit 23 include at least turn serial chip U3, the decoding chip parallel
The pin (D0~D5) of U2 outputting data signals connects with the parallel pin (D0~D5) for turning serial chip input data signal
Connect.In addition, radio frequency decoding circuit 22 further includes the 13rd resistance R13, the 6th capacitor R6 and the 7th capacitor R7, wherein, the
Two power vd D2 provide power supply by the pin VDD of decoding chip U2 for it；Radio frequency receiving circuit 21 will change gained
The pin DIN of the decoded chip U2 of serial data signal is input to decoding chip U2, wherein, the model of decoding chip U2 can be selected
It is taken as a kind of inexpensive radio frequency decoding chip PT2272-L6 of CMOS technology manufacture of Taiwan Pu Cheng companies production, the second electricity
The voltage of source VDD2 can be 5V, and radio frequency receiving circuit 21 can use the electricity that can realize corresponding function in the prior art
Road is realized.
It is parallel turn serial circuit 23 further include the 3rd NPN double pole triodes QC4, the 4th NPN double pole triodes QC5,
5th NPN double pole triodes QC6, the 14th resistance R14 to the 19th resistance R19, wherein, the 3rd NPN double pole triodes
The collector of QC4 is connected and by the 14th resistance R14 and second source VDD2 with turning pin/PL of serial chip U3 parallel
Connection, the base stage of the 3rd NPN double pole triodes QC4 are connected with the pin VT of decoding chip U2, the 3rd NPN double pole triodes
The emitter ground connection of QC4；The collector of 4th NPN double pole triodes QC5 is connected with turning the pin CP of serial chip U3 parallel
And be connected by the 15th resistance R15 with second source VDD2, the base stage of the 4th NPN double pole triodes QC5 passes through the tenth
Six resistance R16 enable input terminal CLK_CP with the first clock and are connected, the emitter ground connection of the 4th NPN double pole triodes QC5；The
The collector of five NPN double pole triodes QC6 is connected and by the 17th resistance with turning pin/CE of serial chip U3 parallel
R17 is connected with second source VDD2, and the base stage of the 5th NPN double pole triodes QC6 passes through the 18th resistance R18 and second clock
Enabled input terminal CLK_CE connections, the emitter ground connection of the 5th NPN double pole triodes QC6；Turn drawing for serial chip U3 parallel
Foot Q7 is connected by the 19th resistance R19 with serial data output terminal DATA_SO, wherein, the 3rd NPN double pole triodes QC4
Play the role of level conversion in serial circuit 23 is turned parallel to the 5th NPN double pole triodes QC6, the first clock enables defeated
Enter to hold that CLK_CP, second clock enable input terminal CLK_CE and serial data output terminal DATA_SO connects with the GPIO of corresponding CPU
Mouth connection.In actual design, 74HC165D, the 3rd NPN ambipolar three can be chosen for by turning the model of serial chip U3 parallel
The model of pole pipe QC4 can choose 2N3904's, the 4th NPN double pole triodes QC5 and the 5th NPN double pole triodes QC6
Model can choose 2N3906, and the resistance value of the 14th resistance R14, the 15th resistance R15 and the 17th resistance R17 can be
The resistance value of 4.7K Ω, the 16th resistance R16, the 18th resistance R18 and the 19th resistance R19 can be 33K Ω.
In embodiments of the present invention, the digit for inputting the parallel data signal of the coding circuit is decoded equal to the radio frequency
The digit of the parallel data signal of circuit output.Further, it is preferable to it is 6 for the digit of the parallel data signal.
Further said next, being done with reference to Fig. 2 and Fig. 4 to the operation principle of the wireless radio frequency remote control device of the present invention
It is bright.
The serial data signal produced after coding chip U1 in coding circuit 11 is encoded include address code, numeric data code and
Synchronous code, then launched by wireless radio transmission circuit 12 in the form of radiofrequency signal, radio frequency receiving circuit 21 connects
After receiving radiofrequency signal, serial data that the decoding chip U2 that radiofrequency signal is converted into radio frequency decoding circuit 22 can be identified
Signal, compared with the address code of decoding chip U2 is passed through twice with the address code of coding chip U1 included in serial data signal
After verification, if the result of verification is completely the same for both address codes, the pin VT output high level letters of decoding chip U2
Number, at the same time, the pin of the corresponding outputting data signals of decoding chip U2 also exports high level signal, when coding circuit 11 does not have
When having the control button to press, coding chip U1 is not connected with the first power vd D1, its pin DOUT output low level signals, so
Wireless radio transmission circuit 12 does not work at this time, and when there is control button to press, coding chip U1 and the first power vd D1 are connected
And start to work, its pin DOUT exports modulated serial data signal, when its pin DOUT exports high level signal, nothing
12 starting of oscillation of line radio frequency transmitter circuitry simultaneously launches radiofrequency signal, when the pin DOUT of coding chip U1 exports low level signal,
Wireless radio transmission circuit 12 is stopped, and therefore, wireless radio transmission circuit 12 is completely controlled by the pin of coding chip U1
The level of the signal of DOUT outputs, so that amplitude keying (i.e. ASK modulation) is completed to wireless radio transmission circuit 12, and equivalent to
Modulation degree is 100% amplitude modulation.Above-mentioned wireless radio transmission module has remote control distance farther out, and no any dead angle,
If adjusting the voltage of the first power vd D1 and increasing its voltage, the transmitting work(of wireless radio transmission circuit can be increased
Rate, so as to increase the transmitting range of wireless radio transmission circuit, and then can make the remote control of wireless radio transmission module away from
From becoming farther.
It is parallel to turn serial electricity in less radio-frequency receiving module in the case where wireless radio transmission module works normally
The 6 bit parallel data signals that serial chip U3 exports decoding chip U2 that turn parallel in road 23 are changed into 1 Bits Serial data letter
Number, it can so greatly reduce the GPIO interface of CPU.Its pin VT outputs high electricity during due to decoding chip U2 outputting data signals
Ordinary mail number, and turn serial chip U3 its pin/PL when receiving data-signal parallel and answer input low level signal, therefore decode core
The high level signal of the pin VT outputs of piece U2 passes through the anti-phase processing of the 4th NPN double pole triodes, can believe high level
Number being converted into low level signal goes control to turn serial chip U3 parallel, similarly, input terminal CLK_CP companies is enabled with the first clock
The 5th NPN double pole triodes that connect and enable the 6th NPN double pole triodes that input terminal CLK_CE is connected with second clock
Level conversion effect also for meeting parallel level needs for turning serial chip U3 and design.It is from fig. 4, it can be seen that whole
A less radio-frequency receiving module is easy and effective, can easily realize the remote control reception to 6 radiofrequency signals, if necessary to 12
Position or the remote control reception function of more multidigit radiofrequency signal, it is only necessary to increase decoding chip U2 and turn the number of serial chip U3 parallel
Amount, and in order to realize that the remote control reception function CPU of multiposition RF signal needs increased GPIO interface also seldom, so that
The cost of CPU can be reduced.
Wireless radio frequency remote control device provided in an embodiment of the present invention, by setting first in wireless radio transmission circuit
NPN double pole triodes, the 2nd NPN double pole triodes and SAW filter, wherein the first NPN double pole triodes will be compiled
The serial data signal that code circuit produces carries out power amplification, then the frequency amplification by the 2nd NPN double pole triodes
, will be through toning to adjust the frequency of the serial data signal after power amplification, then the carrier wave effect by SAW filter
The serial data signal of section frequency is loaded into the waveform with predeterminated frequency to obtain the radiofrequency signal of predeterminated frequency, so may be used
So that wireless radio frequency remote control device has remote control distance farther out, can reach 500 meters it is even farther, and any dead
Angle, so as to make user remote control distance farther out and any direction to the electronic equipment equipped with wireless radio frequency remote control device into
Row effectively operates.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
- A kind of 1. wireless radio frequency remote control device, it is characterised in that including：Wireless radio transmission module and less radio-frequency receive mould Block, wherein, the wireless radio transmission module includes coding circuit and wireless radio transmission circuit, and the coding circuit is used for pair The data-signal of input is encoded and produces serial data signal, the wireless radio transmission circuit by the serial number it is believed that Number it is transformed into the radiofrequency signal of predeterminated frequency and is transmitted to the less radio-frequency receiving module, the less radio-frequency receiving module is used In the radiofrequency signal of reception is converted into serial data signal and the serial data signal is decoded；The wireless radio transmission circuit includes the first NPN double pole triodes, the 2nd NPN double pole triode harmony surface is filtered Ripple device, wherein, the base stage of the first NPN double pole triodes is connected with the coding circuit, the first NPN ambipolar three The emitter ground connection of pole pipe, the collectors of the first NPN double pole triodes respectively with the SAW filter first Vibration pin connect with the emitter of the 2nd NPN double pole triodes, the base stage of the 2nd NPN double pole triodes and Second vibration pin of the SAW filter links together and is connected with wireless radio transmission mould the first power supply in the block, The collector of the 2nd NPN double pole triodes connects first power supply, and the power pins of the SAW filter meet institute State the first power supply.
- 2. wireless radio frequency remote control device according to claim 1, it is characterised in that the wireless radio transmission circuit also wraps Include：First capacitor, the second capacitor, the 3rd capacitor and transmitting antenna, wherein, one end of first capacitor with it is described SAW filter first vibration pin connection, the other end of first capacitor, second capacitor both ends and One end of 3rd capacitor links together and is connected with first power supply, the other end of the 3rd capacitor and institute State transmitting antenna connection.
- 3. wireless radio frequency remote control device according to claim 2, it is characterised in that the wireless radio transmission circuit also wraps Include：First resistor, second resistance and 3rd resistor, wherein, one end of the first resistor is connected with the coding circuit, described The other end of first resistor is connected with the base stage of the first NPN double pole triodes and one end of the second resistance respectively, The second resistance the other end ground connection, the 3rd resistor one termination the first power supply, the other end of the 3rd resistor with Second vibration pin connection of the SAW filter.
- 4. wireless radio frequency remote control device according to any one of claim 1 to 3, it is characterised in that the less radio-frequency Receiving module includes radio frequency receiving circuit, radio frequency decoding circuit and turns serial circuit parallel；The radio frequency receiving circuit is used for the radiofrequency signal for receiving the wireless radio transmission circuit transmission, and is penetrated described Frequency signal is converted into serial data signal；The radio frequency decoding circuit is decoded for docking the received serial data signal and exports parallel data signal；The parallel serial circuit that turns is used to the parallel data signal of radio frequency decoding circuit output being converted into serial data Signal.
- 5. wireless radio frequency remote control device according to claim 4, it is characterised in that the radio frequency decoding circuit includes at least Decoding chip, it is described it is parallel turn serial circuit and include at least to turn serial chip parallel, the decoding chip outputting data signals Pin is connected with the parallel pin for turning serial chip input data signal.
- 6. wireless radio frequency remote control device according to claim 4, it is characterised in that input the coding circuit and line number It is believed that number digit be equal to the radio frequency decoding circuit output parallel data signal digit.
- 7. wireless radio frequency remote control device according to claim 6, it is characterised in that the digit of the parallel data signal is 6.
- 8. wireless radio frequency remote control device according to claim 1, it is characterised in that the first NPN double pole triodes For power amplification triode, the 2nd NPN double pole triodes are frequency amplifying triode.
- 9. wireless radio frequency remote control device according to claim 1, it is characterised in that first power supply is regulated power supply.
- 10. wireless radio frequency remote control device according to claim 1, it is characterised in that the predeterminated frequency of the radiofrequency signal For 315MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057255.6A CN104599475B (en) | 2015-02-04 | 2015-02-04 | A kind of wireless radio frequency remote control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057255.6A CN104599475B (en) | 2015-02-04 | 2015-02-04 | A kind of wireless radio frequency remote control device |
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