CN204089786U - The receiving system of 1 and 0 conversion code can be received - Google Patents
The receiving system of 1 and 0 conversion code can be received Download PDFInfo
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- CN204089786U CN204089786U CN201420511417.XU CN201420511417U CN204089786U CN 204089786 U CN204089786 U CN 204089786U CN 201420511417 U CN201420511417 U CN 201420511417U CN 204089786 U CN204089786 U CN 204089786U
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Abstract
The receiving system of 1 and 0 conversion code can be received, belong to telecontrol engineering field, relate to a kind of receiving system, especially a kind ofly the receiving system that 1 and 0 becomes code can be received, by radio frequency reception demodulation part, 1 and 0 interchange circuit, performance element, decoding integrated package forms jointly, realize the reception of " 1 " and " 0 " code twice change code that radiating portion sends, under initial condition, the change code end of decoding integrated package presents 1 state all the time, after reliable reception first time transmits, High voltage output is had because first of integrated package of decoding exports, start 1 and 0 interchange circuit and carry out change code, transmit so second time can be received, excitation performance element, launch for research dicode and create better condition, improve coding level of confidentiality degree, reduce product cost, promote the anti-ability of cracking of the integrated circuit adopting tri-state coding class energetically, promote the performance of remote control product.
Description
Technical field
This patent belongs to telecontrol engineering field, relates to a kind of receiving system, especially a kind ofly can receive the receiving system that 1 and 0 becomes code.
Background technology
Remote control coding lift-off technology, is a very wide range of electronic technology of a kind of application, occurs very widely in the life of the masses, the security and anti-theft as being used in automobile close the door with open the door on, the enabling being used in high quality anti-theft door with close the door upper etc.
The quality of the coding techniques direct relation remote control product of remote control, our unit once have developed the transmitting Decision Making of Line Schemes of multiple single ripple dicode, it is based on the 2262 coding integrated packages that are representative, carry out the transmitting becoming code, promote the level of confidentiality degree of coding, meet the demand of high-end remote control product, reduce the various electrical equipment interference sources from the external world, make signal transmission accurate, and the advantage utilizing it cheap, promote its coding level of confidentiality degree, make its product in market competition, possess very large competitiveness, but also need multiple receiving circuit that can receive change code, therefore, special research can launch with single ripple dicode the receiving circuit mated, fit in it as a whole, development for remote control product provides safer guarantee.
Summary of the invention
The main purpose of this patent proposes to launch with single ripple dicode a kind of dicode receiving circuit matched, realize the reception of " 1 " and " 0 " code twice change code that radiating portion sends, launch for research dicode and create better condition, improve coding level of confidentiality degree, reduce product cost, stop the upper various electrical equipment interference existed of society, promote the anti-ability of cracking of the integrated circuit adopting tri-state coding class energetically, promote the performance of remote control product.
The measure that this patent proposes is:
The receiving system that 1, can receive 1 and 0 conversion code is made up of jointly radio frequency reception demodulation part, 1 and 0 interchange circuit, performance element, decoding integrated package.
Wherein: the output of radio frequency reception demodulation part connects the input of decoding integrated package, first of decoding integrated package exports connection 1 and 0 interchange circuit, and second of decoding integrated package exports and connects performance element.
Wherein 7 connections of decoding integrated package 8 bit code position are fixed code, and another one becomes and becomes code end.
1 and 0 interchange circuit by controlling diode, biasing resistance, bleeder circuit, discharge resistance, change code control triode and form.
The positive pole controlling diode connects first of decoding integrated package and exports, the negative pole controlling diode connects the base stage becoming code control triode, between the base stage that biasing resistance is connected to change code control triode and ground wire, become the emitter connection bleeder circuit that code controls triode, become the change code end that code controls the collector electrode connection decoding integrated package of triode, the transmitting that change code controls triode also connects a discharge resistance to ground wire.
2, decoding integrated package used is non-locking type.
3, the connected mode of the fixed code of decoding integrated package should be the same with the fixed code connected mode of integrated package of encoding in corresponding transmitting.
4, becoming code control triode is PNP triode.
5, bleeder circuit two resistance compositions, one end of a resistance connects power supply, and to ground wire after other end serial connection another resistance, series connection point connection becomes the emitter that code controls triode.
This measure is explained as follows further:
1, sketch the cardinal principle of single ripple dicode transmitting that our unit for the previous period develops: in 8 bit codes of coding integrated package, wherein 7 is fixed code, wherein one is variation code, and radiating portion, when launching, launch two subcategory numbers.Wherein transmitter code is 7 fixed code wherein for the first time, and first subcategory number of " variation " code of one, and the code that second time is launched is 7 constant fixed code, and the coded signal after one " variation code " variation.And the first time coded signal of the receiving unit that the present invention the matches integrated middle variation that is received code is " 1 ", second time signal is the situation of " 0 ".And present receiving lines of the present invention, reliably will can receive the variation code sent for the first time is exactly " 1 ", and second time signal is the signal of the situation of " 0 ", but current scheme is different from the patent formula applied for last time.
2, in this measure 1, the line construction of the decode in two phases of generation: with 8 bit code lines in decoding integrated package and radiating portion integrated package of encoding corresponding.7 bit codes have wherein connected into fixed code (15 in Fig. 2).Last bit code becomes the change code end (13 in Fig. 2) of a kind of reception twice signal, and when initial condition, the code bit that in receiving unit, " displacement code " position presents all the time is the stationary state of 1, and after receiving signal just produce decoding in change code become " 0 " state.Its decoding is integrated with two outputs, wherein first output, and being also called is 1 and 0 interchange circuit control end. and another one is second output (6 in Fig. 2), and this output is connected with rear class, is directly to export decoded result at the corresponding levels.The structure of this circuit can realize the present invention and receive the requirement becoming code.
3,1 and 0 interchange circuit realizes the reason of the change code of 1 and 0 and is: when decode integrated first export no-output into zero time, the change code connected controls triode, and namely PNP triode base stage exists bias current, and its collector electrode has end for high-order, switch on power into a high position so become code bit line, i.e. one state.Integrated first export to have when decoding and export as time high-order, its triode PNP base stage connected is without bias current, and its collector electrode no-output, but be connected to resistance to ground because becoming code bit line, thinks low level, i.e. " 0 " state, thus achieves the displacement of 1 and 0.
4, the single ripple dicode once applied for our unit invents the decoding principle matching and produce.
This circuit produces four kinds of functions and corresponding principle:
(1), receive the first subcategory number of sending of radiating portion principle: as Fig. 2, when first of integrated package of decoding exports Non voltage output, PNP triode is because have bias current, (being namely that base stage is connected to resistance to earth), so collector electrode has output, it exports connected code bit initial condition is 1 state, with send first time signal for high-order corresponding, so first signal that radiating portion sends can be received.
(2) receive the second subcategory number of sending of radiating portion principle: after receiving the first signal sent, at this moment encode integrated circuit the first output (4 in Fig. 2) export 1 signal, this signal produces high-order to the base stage of PNP triode, this pipe is produced and seals up a door, (because PN joint produces reverse bias), this pipe collector no-output, but be connected to resistance to ground because becoming code bit line, institute thinks low level, i.e. " 0 " state, identical with the variation code " 0 " launched, so the different coded signal of second time can be received.
(3), receive the sequential that has that twice change code must have successively to limit and principle: because the initial shape of decoding integrated package flexure curve in the present invention is a high position, so only have radiating portion to send variation code for time high-order, launching and receiving code could be corresponding, the output of coding integrated package first just has output, thus decoding integrated package is caused to become the new code that code just has " 0 ", and this new code could coincide with transmitting, thus integrated second output that makes to decode in the present invention has high-order output.Otherwise radiating portion is if first launching is secondary " 0 " signal, now because the change code bit line of coding integrated package of the present invention is that a high position " 1 " under initial condition does not meet with transmitter code, do not have the output be connected with rear class.More than analyze, the present invention's decoding is integrated with output, after must first receiving primary correct signal, just may receive the correct signal that second time is launched.
(4), twice emitting signal has the strict demand receiving the time limit, (its benefit greatly can improve the ability of cracking) and principle: the transient state output type decoding integrated package that its decoding integrated package adopts in this measure, its benefit is, decoding integrated package is after receiving the signal sent for the first time, and the first output has high-order output, but is not permanent, second time signal can only be received time of short duration, otherwise from action expense, need again to receive first time signal, could secondary signal be received.Thus to crack and must form important elements.Thus the level of confidentiality cracked is greatly increased.
5, the effect of bleeder circuit that connects of triode emission: mainly form dividing potential drop relation, to adapt to the voltage needed for different coding integrated circuit, two is can adjust coding integrated first flexibly to export as time high-order, causes the reverse bias to this pipe.
6, PNP triode base stage has with the first output of coding integrated circuit and controls diode and does to isolate, mainly avoid when become code control end no-output into zero time, its base current flow direction is encoded integrated output, thus destruction overall work state.
After the invention process, after coordinating with the radiating portion applied for before our unit, below outstanding feature:
1, secrecy promotes greatly, achieve the change code form of the coding integrated circuit of low price, improve the character of coding integrated circuit, just output is had after must receiving two subcategory numbers after the receiving circuit decoding of present inventor, thus there is the very high anti-ability of cracking, because rudimentary coding integrated package has cheap advantage, so its product has very strong competitiveness.
If 2 with the combination again of rolling code circuit, it decodes difficulty is superpower, because rolling code is the coding of a class character, and in this measure, dicode transmitting is the coding of a class character, two kinds of coded combinations of different nature are larger than a kind of code breaks difficulty of character.
3, the dicode receiving lines of this measure receives reliable.
Its reason is that the decoding integrated package fixed code in the present invention conforms to completely with the fixed code of radiating portion.And the change code part received, signal code is " 1 " for the first time, and the code of second time signal is " 0 ", and the twice change code sent with radiating portion definitely conforms to, and signal is " 1 " for the first time, and second signal is also " 0 ".Have followed the rule of this kind of encoding and decoding integrated package completely.Another very important reason is, what the decoding in receiving lines in the present invention realized is " tracking system ", that is to say that just automatically become the code " 0 " needed for second time, twice receiving course is not disorderly, onside after receiving first change code " 1 ".
4, crack very difficult: mainly contain three reasons, one is to have twice different code could realize decoding, just has output.Two is that different code needed for twice has timing requirements, can not be disorderly, 3rd major reason is, the requirement that this twice different change codes is also necessary free when launching, because the integrated output of the coding adopted in the present invention is the transient state output type adopted, in other words after receiving signal, its output can only remain a transient state high position, will disappear after blink.If criminal, after correct code is made in exploration in first time, want that within the very of short duration time, feel out the correct code of second time is more obviously very difficult.Also be that criminal wants to crack the present invention must by three passes: one is must twice different dicode, and two is also must have sequential, and three is also must be limited within the very short time just can complete, and therefore adopts " the barcode scanning instrument " of crime to crack and hardly may.From meaning in a certain respect, higher than rolling code, because crack rolling code in theory, there is certain probability in this level of confidentiality, and just this probability is very low, very low, and the present invention is because exist the above-mentioned three elements that crack, this crack probability just may be lower.
5, circuit is reliable, and one is that circuit is simplified.
6, produce easily, one be need not be valuable equipment and instrument, two is that technology is simple, and three are that circuit is simplified and component requirements used is low, so can produce very high first-pass yield, very applicable minuscule-type-enterprise produces.
Accompanying drawing explanation
Fig. 1 is total measure schematic diagram of the receiving system that can receive 1 and 0 conversion code.
In figure: 1, radio frequency reception demodulation part (as superregenerative reception demodulating unit, or beat reception demodulating unit); 2, decoding integrated package; 3, performance element; 4, integrated package first of decoding exports; 5,1 and 0 interchange circuit; 6, integrated package second of decoding exports.
Fig. 2 is the practical circuit diagram of this measure relative section.
In figure: 1, radio frequency reception demodulation part (as superregenerative reception demodulating unit, or beat reception demodulating unit); 2, decoding integrated package; 3, performance element; 4, integrated package first of decoding exports; 6, integrated package second of decoding exports; 7, diode is controlled; 8, biasing resistance; 9, become code and control triode; 10, bleeder circuit; 12, discharge resistance; 13, the change code end 15 of decoding integrated package, the fixed code of decoding integrated package.
Embodiment
Fig. 1 and Fig. 2 describes the concrete a kind of mode implemented jointly.
1, select element: integrated package of wherein decoding selects 2272, become code control triode and select low power PNP triode.
2, weld: weld by Fig. 2.
3, adjustment and detection:
(1), to the adjustment of triode initial condition: the requirement withstand voltage according to decoding integrated circuit, the divider resistance of adjustment PNP triode emitter, it is the voltage of " 1 " that the collector electrode of PNP triode is exported needed for decoding integrated package, but the voltage simultaneously exported is too high again and damage decoding integrated circuit.
(2), can the Function detection of automatic changing code bit line: when launching first time signal, energy reliable reception of the present invention: the first output having universal instrument to survey decoding integrated package has high-order output.
(3), twice signal receiving function detects: after receiving the first signal, secondary signal of fasting ejection very much, integrated package second of at this moment decoding exports high-order output.Have voltage to export when having universal instrument to survey this, if when adopting oscilloscope, display screen has high-order reaction.
(4) Received signal strength whether sequential, is detected: the second output universal instrument or oscilloscope being received decoding integrated package, if first launch secondary signal, integrated package second of now decoding exports without high pressure, if there is high pressure, illustrate that in bleeder circuit, resistance is not right, decoding integrated package has been broken, or biasing resistance resistance is excessive.
(5), detect whether decoding integrated package is non-interlocking type: first output and second of universal instrument or oscilloscope being received decoding integrated package exports to be observed, and after receiving signal, signal can disappear within the time of short duration, otherwise should change the model of decoding integrated package.
Claims (5)
1. can receive the receiving system of 1 and 0 conversion code, it is characterized in that: jointly be made up of radio frequency reception demodulation part, 1 and 0 interchange circuit, performance element, decoding integrated package;
Wherein: the output of radio frequency reception demodulation part connects the input of decoding integrated package, first of decoding integrated package exports connection 1 and 0 interchange circuit, and second of decoding integrated package exports and connects performance element;
Wherein 7 connections of decoding integrated package 8 bit code position are fixed code, and another one becomes and becomes code end;
1 and 0 interchange circuit by controlling diode, biasing resistance, bleeder circuit, discharge resistance, change code control triode and form:
The positive pole controlling diode connects first of decoding integrated package and exports, the negative pole controlling diode connects the base stage becoming code control triode, between the base stage that biasing resistance is connected to change code control triode and ground wire, become the emitter connection bleeder circuit that code controls triode, become the change code end that code controls the collector electrode connection decoding integrated package of triode, the transmitting that change code controls triode also connects a discharge resistance to ground wire.
2. the receiving system that can receive 1 and 0 conversion code according to claim 1, is characterized in that: decoding integrated package used is non-locking type.
3. the receiving system that can receive 1 and 0 conversion code according to claim 1, is characterized in that: the connected mode of the fixed code of decoding integrated package should be the same with the fixed code connected mode of integrated package of encoding in corresponding transmitting.
4. the receiving system that can receive 1 and 0 conversion code according to claim 1, is characterized in that: becoming code control triode is PNP triode.
5. the receiving system that can receive 1 and 0 conversion code according to claim 1, it is characterized in that: bleeder circuit two resistance compositions, one end of a resistance connects power supply, and to ground wire after other end serial connection another resistance, series connection point connects the emitter that change code controls triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420511417.XU CN204089786U (en) | 2014-09-07 | 2014-09-07 | The receiving system of 1 and 0 conversion code can be received |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420511417.XU CN204089786U (en) | 2014-09-07 | 2014-09-07 | The receiving system of 1 and 0 conversion code can be received |
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| Publication Number | Publication Date |
|---|---|
| CN204089786U true CN204089786U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420511417.XU Expired - Fee Related CN204089786U (en) | 2014-09-07 | 2014-09-07 | The receiving system of 1 and 0 conversion code can be received |
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| Country | Link |
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| CN (1) | CN204089786U (en) |
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2014
- 2014-09-07 CN CN201420511417.XU patent/CN204089786U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150107 Termination date: 20160907 |