CN204103908U - The dicode receiver of transporting discharging type suspension change 0 yard - Google Patents
The dicode receiver of transporting discharging type suspension change 0 yard Download PDFInfo
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- CN204103908U CN204103908U CN201420523360.5U CN201420523360U CN204103908U CN 204103908 U CN204103908 U CN 204103908U CN 201420523360 U CN201420523360 U CN 201420523360U CN 204103908 U CN204103908 U CN 204103908U
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Abstract
The dicode receiver of transporting discharging type suspension change 0 yard, belong to areas of information technology, by radio frequency reception demodulator circuit, transporting discharging type " suspension " and " 0 " change-over circuit, interlock circuit, performance element, decoding integrated package forms jointly, in an initial condition, first of decoding integrated package exports no-voltage, after reliable reception first time transmits, " suspension " and " 0 " change-over circuit start, carry out and become code, have received second time transmit after, performance element could be encouraged, when multidigit output has output or receives mistake simultaneously, interlock circuit starts immediately, make performance element locking, become code end into holding initial condition, receiver is made to possess unique property of output, sometimes validity during reception, realize the reception of floated and " 0 " code twice change code that radiating portion sends, launch for research dicode and create better condition, there is the very high anti-ability of cracking, the perfect performance of remote control product, make remote control product can obtain using more widely.
Description
Technical field
Belong to areas of information technology.
Background technology
Society is improving, science and technology is in development, and telecontrol engineering is more and more general, however, but in general family, anti-theft safety door most or mechanical key is unblanked, although key is also dangerous, often has a key can open the reports of two to three locks, but still do not replace with remote control, this just illustrates 2 points: one is that remote control cost is too high, can not spread among general family, and two is that the accuracy of remote control is not as mechanical key.This is because the coding of coding integrated circuit is simple, easily cracked by people, thus privacy degrees is inadequate, if integrated circuit need not be encoded, be exactly existing rolling code, but cost is too high again, so the product made has very large price competitiveness, wide market, but shortcoming due to simple close pole of encoding not high, so can not be widely used in the higher product of requirement.
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 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, has become the necessary urgent problem solved at present, so, special research can launch with single ripple dicode the receiving circuit mated, and fit in it as a whole, the development for remote control product provides safer guarantee.
Summary of the invention
In order to improve remote control level of confidentiality degree, main purpose of the present utility model is the circuit launched according to the change code applied for, proposition can be launched with single ripple dicode the one list ripple matched and be become code receiving circuit, realize the reception of floated and " 0 " code twice change code that radiating portion sends, launch for research dicode and create better condition, four kinds of functions can be produced: one is the signal that can receive two kinds of codes after enforcement, two is receive to have sequential, first signal unique for the first time can only be received, then second time signal could be received, three is unique property with output, four is validity sometimes when receiving, owing to adding four kinds of important restrictions, so significantly increase the difficulty having cracked and decoded.
The measure that this patent proposes is:
1, the dicode receiver of transporting discharging type suspension change 0 yard is made up of with " 0 " change-over circuit, interlock circuit, performance element, decoding integrated package jointly radio frequency reception demodulator circuit, transporting discharging type " suspension ".
Wherein: the output of radio frequency reception demodulator circuit connects the input of decoding integrated package, first of decoding integrated package exports and connects transporting discharging type " suspension " and " 0 " change-over circuit, and the 4th 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, namely changes code.
Performance element: the 4th of decoding integrated package exports connection isolation resistance, and isolation resistance connects the input of executive circuit again, the positive pole of performance element first clamp diode connects the input of executive circuit, and negative pole connects first of decoding integrated package and exports.
Transporting discharging type " suspension " and " 0 " change-over circuit are made up of operational amplifier, upper inclined resistance, lower inclined resistance, PNP triode.
First of decoding integrated package exports one end of the first resistance, the other end of the first resistance is connected after the second resistance to the inverting input of operational amplifier, one termination power of upper inclined resistance, the lower inclined resistance of other end series connection is to ground, the in-phase input end of operational amplifier connects the series connection point of inclined resistance and lower inclined resistance, the output of operational amplifier connects the base stage of PNP triode, and PNP triode collector electrode connects a resistance to earth, and the emitter of PNP triode connects variation code.
Interlock circuit: second of decoding integrated package exports and exports with the 3rd input connecing OR circuit respectively, the output of OR circuit connects the input of not gate, non-gate output terminal connects the negative pole of two clamp diodes, the positive pole of the second clamp diode of a clamp diode and performance element connects the input of executive circuit, and another clamp diode and transporting discharging type " suspension " are connected the series connection point of the first resistance and the second resistance with the positive pole of the clamp diode of " 0 " change-over circuit.
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, OR circuit is made up of two or gate diode, and the positive pole of first or gate diode connects second of decoding integrated package and exports, and negative pole connects the input of not gate, and the positive pole of second or gate diode connects the 3rd output of decoding integrated package, and negative pole connects the input of not gate.
This measure is explained as follows further:
One, 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 " 0 ".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 " 0 ", but current scheme is different from the patent formula applied for last time.
Two, 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 (11 in Fig. 2).Last bit code becomes the change code end (10 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 " 0 " state.Its decoding is integrated with two outputs, wherein first output (4 in Fig. 2), and being also called is transporting discharging type " suspension " and " 0 " change-over circuit control end, 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 receiving the requirement becoming code.
Three, transporting discharging type " suspension " and " 0 " change-over circuit realize the reason that " suspension " code becomes " 0 " code: when first of integrated package of decoding export no-output into zero time, the end of oppisite phase of operational amplifier that is connected be low level, because its positive terminal is added with voltage, therefore its output is high-order, there is not bias current in now connected PNP triode base stage, its collector electrode and emitter disconnect, the change code end connected both did not connect power supply and ground wire, for suspension, when first of integrated package of decoding export have a high position time, the end of oppisite phase of connected operational amplifier has a high position, the output of operational amplifier is impelled to be low, the base stage of PNP triode has bias current to exist, its collector electrode and emitter are connected, become code end and receive ground wire by earth resistance, present low-end trim, so achieve the transformation that " suspension " becomes " 0 ".
Four, this measure can produce four kinds of functions after implementing: one is the signal that can receive two kinds of codes, two is receive to have sequential, first signal unique for the first time can only be received, then second time signal could be received, three is unique property with output, four is validity sometimes when receiving, owing to adding four kinds of important restrictions, so significantly increase the difficulty having cracked and decoded.
1, the principle of two kinds of coded signals can be received:
(1), receive the first subcategory number of sending of radiating portion principle: as Fig. 2, in an initial condition, namely when first of integrated package of decoding exports Non voltage output, when the first output no-output of integrated package of decoding is zero, the end of oppisite phase of operational amplifier that is connected be low level, because its positive terminal is added with voltage, therefore its output is high-order, there is not bias current in now connected PNP triode base stage, its collector electrode and emitter disconnect, the change code end connected both did not connect power supply and ground wire, for suspension, 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, the end of oppisite phase that first output of at this moment encoding integrated circuit has the high signal of 1 to input connected operational amplifier has a high position, the output of operational amplifier is impelled to be low, the base stage of PNP triode has bias current to exist, its collector electrode and emitter are connected, become code end because there is the grounded collector resistance of PNP triode to receive ground wire, present low-end trim, i.e. " 0 " state, identical with the variation code " 0 " launched, so can secondary coded signal be received.
2, receive the sequential that has that twice change code must have successively to limit and principle: because the initial shape of variation code of integrated package of decoding is " suspension ", so when only having radiating portion to send variation code for " suspension ", launching and receiving code could be corresponding, first output of decoding integrated package just has output, thus cause decoding integrated package variation code just to have the new code of " 0 ", and this new code could coincide with transmitting, the 4th output making decoding integrated package connect performance element just has high-order output.Otherwise radiating portion is if first launching is secondary " 0 " signal, and the variation code of integrated package of now decoding is that under initial condition, " suspension " code and transmitter code do not meet, the 4th output connecting performance element does not have output.More than analyze, if cracker is first the second subcategory number crack code, but because the first subcategory number is not opened, first clamp diode (18 in Fig. 2) of performance element works, and to performance element still clamper, only has after the first subcategory number is opened, the second subcategory number could be received, two subcategory numbers correctly just can have last output, and the output that integrated package of namely decoding connects performance element has voltage, could start performance element.
3, there is the principle of benefit that bit line uniquely receives and formation: in measure 1, add interlock function, its benefit is when criminal is when cracking, and the bit line determined is wrong, then therefore cannot crack completely without output.Its reason one only has to become code bit line correctly, and what second time just may be had to receive is correct, otherwise can not normal reception.Two is that the bit line only exported to rear class exports correctly, last output is just had when two subcategory numbers are correct, three is if when multidigit output has output simultaneously, because the input of not gate becomes or door, form interlocking, or reception mistake, as can be seen from Figure 2, non-gate output terminal is low level, second clamp diode (16 in Fig. 2) of performance element, transporting discharging type " suspension " works with the clamp diode (17 in Fig. 2) of " 0 " change-over circuit, to performance element, transporting discharging type " suspension " and " 0 " change-over circuit have carried out clamper, so formation performance element, transporting discharging type " suspension " and " 0 " change-over circuit cannot start.
4, the principle of twice receiving code validity sometimes: be the transient state type selected because decoding integrated circuit exports, so criminal can not be allowed to crack the more time, also be that the first subcategory number cracks successfully, second subcategory number must provide in the very short time, otherwise it is invalid, must will restart two subcategory numbers, thus greatly increase the anti-level of confidentiality cracked.
After the invention process, after coordinating with the radiating portion applied for before our unit, below outstanding feature:
1, the reception of floated and " 0 " code twice change code that radiating portion sends is realized, achieve the change code form of the coding integrated circuit of low price, be conducive to the lifting of the anti-ability of cracking of tri-state coding adhesive 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.
2, owing to increasing interlocking portions, this reception defines the function of quadruple constraint, substantially increases and cracks difficulty, but but can reliably receive.
If 3 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.
4, 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 " 0 ", 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 " 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 after receiving first change code " suspension ", just automatically becomes the code " 0 " needed for second time, twice receiving course is not disorderly, onside.
5, 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.
6, circuit is reliable, and one is that circuit is simplified.
7, 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 dicode receiver of transporting discharging type suspension change 0 yard.
In figure: 1, radio frequency reception demodulator circuit (as superregenerative reception demodulating unit, or beat reception demodulating unit); 2, decoding integrated package; 3, interlock circuit; 4, the 4th of integrated package of decoding exports; 5, the 3rd of integrated package of decoding exports; 6, second of integrated package of decoding exports; 7, first of integrated package of decoding exports; 8, performance element; 9, transporting discharging type " suspension " and " 0 " change-over circuit; 10, code end is become.
Fig. 2 is the practical circuit diagram of this measure relative section.
In figure: 1, radio frequency reception demodulator circuit (as superregenerative reception demodulating unit, or beat reception demodulating unit); 2, decoding integrated package; 4, the 4th of integrated package of decoding exports; 5, the 3rd of integrated package of decoding exports; 6, second of integrated package of decoding exports; 7, first of integrated package of decoding exports; 8, performance element; 10, code end is become; 11, the fixed code of decoding integrated package; 12, isolation resistance; 13, the second first or gate diode exported of decoding integrated package is connect; 14, the 3rd second or the gate diode exported of decoding integrated package is connect; 15, not gate; 16, the second clamp diode of performance element; 17, the clamp diode of transporting discharging type " suspension " and " 0 " change-over circuit; 18, the second clamp diode of performance element; 19, the first resistance of operational amplifier end of oppisite phase; 20, the second resistance of operational amplifier end of oppisite phase; 21, upper inclined resistance; 22, lower inclined resistance; 23, operational amplifier; 25, PNP triode grounded collector resistance; 26, PNP triode.
Embodiment
Fig. 1, Fig. 2 describe the concrete execution mode implemented jointly.
1, element is selected: integrated package of wherein decoding selects 2272, and PNP triode is low power PNP triode.
2, weld: weld as shown in Figure 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), detect Received signal strength whether sequential: 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, illustrates that PNP triode is bad.
(4), detect interlock circuit: when all output all has output voltage, performance element should not start, become code end and should be initial condition, otherwise illustrate that not gate damages, or clamp diode does not weld.
(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 (4)
1. the dicode receiver of transporting discharging type suspension change 0 yard, is characterized in that: be jointly made up of with " 0 " change-over circuit, interlock circuit, performance element, decoding integrated package radio frequency reception demodulator circuit, transporting discharging type " suspension ";
Wherein: the output of radio frequency reception demodulator circuit connects the input of decoding integrated package, first of decoding integrated package exports and connects transporting discharging type " suspension " and " 0 " change-over circuit, and the 4th 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, namely changes code;
Performance element: the 4th of decoding integrated package exports connection isolation resistance, and isolation resistance connects the input of executive circuit again, the positive pole of performance element first clamp diode connects the input of executive circuit, and negative pole connects first of decoding integrated package and exports;
Transporting discharging type " suspension " and " 0 " change-over circuit are made up of operational amplifier, upper inclined resistance, lower inclined resistance, PNP triode;
First of decoding integrated package exports one end of the first resistance, the other end of the first resistance is connected after the second resistance to the inverting input of operational amplifier, one termination power of upper inclined resistance, the lower inclined resistance of other end series connection is to ground, the in-phase input end of operational amplifier connects the series connection point of inclined resistance and lower inclined resistance, the output of operational amplifier connects the base stage of PNP triode, and PNP triode collector electrode connects a resistance to earth, and the emitter of PNP triode connects variation code;
Interlock circuit: second of decoding integrated package exports and exports with the 3rd input connecing OR circuit respectively, the output of OR circuit connects the input of not gate, non-gate output terminal connects the negative pole of two clamp diodes, the positive pole of the second clamp diode of a clamp diode and performance element connects the input of executive circuit, and another clamp diode and transporting discharging type " suspension " are connected the series connection point of the first resistance and the second resistance with the positive pole of the clamp diode of " 0 " change-over circuit.
2. the dicode receiver of transporting discharging type suspension change 0 yard according to claim 1, is characterized in that: decoding integrated package used is non-locking type.
3. the dicode receiver of transporting discharging type suspension change 0 yard 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 dicode receiver of transporting discharging type suspension change 0 yard according to claim 1, it is characterized in that: OR circuit is made up of two or gate diode, the positive pole of first or gate diode connects second of decoding integrated package and exports, negative pole connects the input of not gate, the positive pole of second or gate diode connects the 3rd output of decoding integrated package, and negative pole connects the input of not gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523360.5U CN204103908U (en) | 2014-09-12 | 2014-09-12 | The dicode receiver of transporting discharging type suspension change 0 yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523360.5U CN204103908U (en) | 2014-09-12 | 2014-09-12 | The dicode receiver of transporting discharging type suspension change 0 yard |
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| Publication Number | Publication Date |
|---|---|
| CN204103908U true CN204103908U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420523360.5U Expired - Fee Related CN204103908U (en) | 2014-09-12 | 2014-09-12 | The dicode receiver of transporting discharging type suspension change 0 yard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204103908U (en) |
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2014
- 2014-09-12 CN CN201420523360.5U patent/CN204103908U/en not_active Expired - Fee Related
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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: 20150114 Termination date: 20160912 |
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| CF01 | Termination of patent right due to non-payment of annual fee |