CN204068951U - The decoding receiver becoming code can be received - Google Patents
The decoding receiver becoming code can be received Download PDFInfo
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- CN204068951U CN204068951U CN201420511420.1U CN201420511420U CN204068951U CN 204068951 U CN204068951 U CN 204068951U CN 201420511420 U CN201420511420 U CN 201420511420U CN 204068951 U CN204068951 U CN 204068951U
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Abstract
The decoding receiver becoming code can be received, belong to telecontrol engineering field, according to the circuit that the change code applied for is launched, proposition can be launched with single ripple dicode the one matched and be become code receiving circuit, by radio frequency reception demodulation part, the change decoding circuit of floated change " 1 ", performance element, decoding integrated package forms jointly, in an initial condition, the decoding change code end of integrated package is consistent with the change code end of launching code integrated package, therefore the first time signal of transmitting can be received, after have received first time signal, first of decoding integrated package exports high pressure, the change decoding circuit starting floated change " 1 " is formed and becomes code, the second time signal that reliable reception is launched, thus excitation performance element, realize the reception of floated and " 1 " code twice change code that radiating portion sends, launch for research dicode and create better condition.
Description
Technical field
Belong to telecontrol engineering field.
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 almost car close the door with open the door on, the enabling being used in high quality anti-theft door with close the door upper etc.
Remote control is often by extraneous interference, as bad weather, surrounding environment is crowded, remote control electrical appliance product is around many, it is all the interference source affecting remote control, thus cause signal transmission inaccurate, our unit once have developed multiple transmitting Decision Making of Line Schemes that can become code, it can address these problems effectively, if but the receiver do not matched, all all become empty talk, therefore, according to existing transmitting Decision Making of Line Schemes, the development of amount body can receive the receiving circuit becoming code, become the problem that must urgently solve at present, so, 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 is the circuit launched according to the change code applied for, proposition can be launched with single ripple dicode the one matched and be become code receiving circuit, realize the reception of floated and " 1 " code twice change code that radiating portion sends, launch for research dicode and create better condition, after enforcement, be conducive to the lifting of the anti-ability of cracking of tri-state coding adhesive integrated circuit, with the advantage that it is cheap, be conducive to the competition in market, encode after integrated package combines with other senior class, be conducive to the larger lifting of level of confidentiality degree.
The measure that this patent proposes is:
1, the decoding receiver becoming code can be received jointly to be made up of radio frequency reception demodulation part, the change decoding circuit of floated change " 1 ", 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 the change decoding circuit connecting floated change " 1 ", 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.
The change decoding circuit of floated change " 1 ": be made up of two inverters and an analog switch:
First of decoding integrated package exports the input of connection first inverter, the output of first inverter connects the input of second inverter, the output of second inverter connects the control end of analog switch, the input of analog switch links together with the live wire of decoding integrated package, and the output of analog switch connects change code end.
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, the output of analog switch connects the second bit code in decoding integrated package 8 bit code position, and this bit code position is and becomes code end.
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 " suspension ", second time signal is the situation of " 1 ".And present receiving lines of the present invention, reliably will can receive the variation code sent for the first time is exactly " suspension ", and second time signal is the signal of the situation of " 1 ", 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 (18 in Fig. 2).Last bit code becomes the change code end (17 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 " suspension ", and after receiving signal just produce decoding in change code become one state.Its decoding is integrated with two outputs, wherein first output (4 in Fig. 2), and being also called is the change decoding circuit control end of floated change " 1 ", and this end directly controls to become code.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.In above-mentioned line construction, the input of the first output connection first inverter, the output of first inverter connects the input of second inverter, the control end of the output connecting analog switch of second inverter, the input termination decoding set of analog switch becomes the live wire of block, and the output of analog switch connects change code end.
3, the change decoding circuit of floated change " 1 " realizes " suspensions " code and becomes the reason of " 1 " and be: when decode integrated first output no-output into zero time, first inverter connected is input as low level, export as high-order, second inverter output is low level, the analog switch control end connected is low level, its input and output disconnect, so the integrated change code end of the decoding that connects of analoging switch output end neither connects power supply earth-free line again, is suspend.Otherwise when integrated first output no-output of decoding is high-order, the output of its analog switch switches on power for a high position, and the change code end connected is high-order, i.e. one state, thus the conversion achieving suspension code and " 1 ".
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, first inverter be input as low level, according to the principle of inverter, can learn, its output must be high-order, i.e. " 1 ", in like manner can learn that the output of the second inverter is low level, the analog switch connected is off state, so the integrated change code end of the decoding that connects of analoging switch output end neither connects power supply earth-free line again, for suspending, be that suspended phase is corresponding with the first time signal sent, 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 the first output of integrated circuit of encoding has the high signal of 1 to input, the input of the first inverter is exactly high-order, its output must low level, i.e. " 0 ", in like manner, the output of the second inverter must be high-order, analog switch is on-state, because the input of analog switch to be connected together with the live wire of decoding integrated package, so the integrated change code end of the decoding that connects of analoging switch output end is high-order, i.e. one state, identical with the variation code " 1 " 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 suspension, so when only having radiating portion to send variation code for suspending, 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 " 1 ", 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 " 1 " signal, now because the change code bit line of coding integrated package of the present invention is that suspension under initial condition and transmitter code do not meet, 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, inverter is used for logical inversion, has good carrying load ability, when voltage is by high step-down, has cushioning effect, decoding integrated package can not be damaged.
6, the electronic switch used in measure 1 is analog switch CD4066, there are 4 independently analog switches inside, the crosstalk of each switch room is very little, representative value is-50dB, when control end adds high level, switch conduction, conduction impedance is lower, in addition, conduction impedance is substantially constant in whole input reference signal.Eliminate the change of switching transistor threshold voltage with input signal, therefore within the scope of whole working signal, conduction impedance is lower.Compared with single channel switch, there is input signal peak voltage ranges and equal supply voltage and the advantage such as conduction impedance is more stable in input reference signal.The switch cut-off when control end adds low level.During analog switch conducting, conducting resistance is tens ohm; During analog switch cut-off, present very high impedance, can open circuit be become.Analog switch can transmission of digital signals and analog signal, and the upper limiting frequency of the analog signal that can transmit is 40MHz.
Analog switch is a kind of three-stable state circuit, and it according to the level of gating end, can determine the state of input end and output.When elected go side is in strobe state, the state of output depends on the state of input end; When elected go side is in cut-off state, then no matter input end's level how, output is all high-impedance state.Analog switch possess low in energy consumption, speed fast, mechanical contact, volume are little and the feature such as long service life.
After the invention process, after coordinating with the radiating portion applied for before our unit, below outstanding feature:
1, the change code form of the coding integrated circuit of low price is achieved, 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 " suspension " for the first time, and the code of second time signal is " 1 ", and the twice change code sent with radiating portion definitely conforms to, and signal is " suspension " for the first time, and second signal is also " 1 ".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 after receiving first change code " suspension ", just automatically becomes the code " 1 " needed for second time, twice receiving course is not disorderly, onside.
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.Two is that inverter has good carrying load ability, when voltage is by high step-down, has cushioning effect, decoding integrated package can not be damaged.Analog switch possess low in energy consumption, speed fast, mechanical contact, volume are little and the feature such as long service life.
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 that can receive the decoding receiver becoming 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, the change decoding circuit of floated change " 1 "; 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; 8, first inverter; 11, second inverter; 12, the output of second inverter, the i.e. control end of analog switch; 13, analog switch; 15, the input of analog switch; 17, the output of analog switch, the change code end of integrated package of namely decoding; 18, 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, inverter can be serial with CMOS, and available CD series, as CD4069, analog switch is CD4066.
2, weld: weld by Fig. 2.
3, adjustment and detection:
(1), 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.
(2), 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.
(3) 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 inverter has damaged, or the damage of analog switch.
(4), 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 (4)
1. can receive the decoding receiver becoming code, it is characterized in that: be jointly made up of radio frequency reception demodulation part, the change decoding circuit of floated change " 1 ", 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 the change decoding circuit connecting floated change " 1 ", 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;
The change decoding circuit of floated change " 1 ": be made up of two inverters and an analog switch:
First of decoding integrated package exports the input of connection first inverter, the output of first inverter connects the input of second inverter, the output of second inverter connects the control end of analog switch, the input of analog switch links together with the live wire of decoding integrated package, and the output of analog switch connects change code end.
2. the decoding receiver that can receive change code according to claim 1, is characterized in that: decoding integrated package used is non-locking type.
3. the decoding receiver that can receive change 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 decoding receiver that can receive change code according to claim 1, is characterized in that: the output of analog switch connects the second bit code in decoding integrated package 8 bit code position, and this bit code position is and becomes code end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420511420.1U CN204068951U (en) | 2014-09-07 | 2014-09-07 | The decoding receiver becoming code can be received |
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| CN201420511420.1U CN204068951U (en) | 2014-09-07 | 2014-09-07 | The decoding receiver becoming code can be received |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776766A (en) * | 2018-06-07 | 2018-11-09 | 蚁果智能科技（上海）有限公司 | A kind of portable two-in-one barcode scanning equipment |
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2014
- 2014-09-07 CN CN201420511420.1U patent/CN204068951U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776766A (en) * | 2018-06-07 | 2018-11-09 | 蚁果智能科技（上海）有限公司 | A kind of portable two-in-one barcode scanning equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150907 |
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| EXPY | Termination of patent right or utility model |