CN204089789U - The suspension of amplifier type turns the change code receiving circuit of 1 - Google Patents
The suspension of amplifier type turns the change code receiving circuit of 1 Download PDFInfo
- Publication number
- CN204089789U CN204089789U CN201420524451.0U CN201420524451U CN204089789U CN 204089789 U CN204089789 U CN 204089789U CN 201420524451 U CN201420524451 U CN 201420524451U CN 204089789 U CN204089789 U CN 204089789U
- Authority
- CN
- China
- Prior art keywords
- circuit
- integrated circuit
- decoding integrated
- connects
- code
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The suspension of amplifier type turns the change code receiving circuit of 1, belong to electronic technology field, by radio frequency reception demodulator circuit, decoding integrated circuit, interlock circuit, performance element, amplifier type transporting discharging type transcoding circuit forms jointly, in an initial condition, the 3rd of decoding integrated circuit exports no-voltage, after reliable reception first time transmits, the 3rd of decoding integrated circuit exports high-order output, start amplifier type transporting discharging type transcoding circuit and carry out change code, make it to become coded signal " 1 " with the second time of radiating portion corresponding, receive second time to transmit, start performance element, when multidigit output has output or receives mistake, interlock circuit starts immediately, change code end is made to maintain initial condition, performance element is closed, significantly increase the difficulty having cracked and decoded, realize the reception that " suspension " and " 1 " code that radiating portion sends exchanges, good condition is created for realizing twice emitting.
Description
Technical field
Belong to electronic technology field.
Background technology
Remote control coding lift-off technology, one is kind a very wide range of electronic technology 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.
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.
Single ripple dicode that our unit had once succeeded in developing multiple change code launches Decision Making of Line Schemes, good condition is provided to the level of confidentiality degree improving coding, but also need with it corresponding decoding technique just can become a complete entirety, receive and the matched well of launching, promote an outstanding key factor of remote control properties of product, therefore, according to the transmitting Decision Making of Line Schemes of the single ripple dicode applied for, the circuit that development dicode receives, for the extensive utilization of remote control product lays the first stone.
Summary of the invention
Main purpose of the present utility model proposes a kind of decoding circuit, create the receiving lines that can receive change code to match with the single ripple dicode launch scenario applied for before our unit, realize the reception that " suspension " and " 1 " code that radiating portion sends exchanges, good condition is created for realizing twice emitting, 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, encode after integrated circuit combination with other senior class, can realize superpowerly cracking combined effect.
The measure that this patent proposes is:
1, amplifier type suspend turn 1 change code receiving circuit be jointly made up of radio frequency reception demodulator circuit, decoding integrated circuit, interlock circuit, performance element, amplifier type transporting discharging type transcoding circuit.
Wherein: the output of receiving demodulation circuit connects the input of decoding integrated circuit, the 3rd of decoding integrated circuit exports and connects transporting discharging type transcoding circuit, and the 4th of decoding integrated circuit exports and connects performance element.
8 bit code positions, 7 live wires connecting ground wire or connection decoding integrated circuit wherein of decoding integrated circuit become fixed code, and another one connects to becoming with transporting discharging type transcoding circuit and becomes code end.
Transporting discharging type transcoding circuit is made up of operational amplifier, PNP triode, comparison circuit, bleeder circuit.
The 3rd of decoding integrated circuit exports one end of the first resistance of concatenation operation amplifier end of oppisite phase, the end of oppisite phase of operational amplifier is connect after the other end of the first resistance is connected in series the second resistance, the in-phase end of operational amplifier connects comparison circuit, the output of operational amplifier connects the base stage of PNP triode, the emitter of PNP triode connects bleeder circuit, and the collector electrode of PNP triode connects change code end.
Interlock circuit: first of decoding integrated circuit exports and exports with second positive pole being connected two or gate diode respectively, or the negative pole of gate diode connects the input of not gate, the output of not gate connects the negative pole of two clamp diodes, what the positive pole of the clamp diode of a clamp diode and transporting discharging type transcoding circuit was connected on the first resistance and the second resistance is connected in series a little, and the positive pole of second clamp diode of another clamp diode and performance element connects the input of executive circuit.
Performance element: the 4th of decoding integrated circuit the exports the one end connecting current-limiting resistance, the other end of current-limiting resistance connects the input of executive circuit, the positive pole of first clamp diode of the input performance element of executive circuit, its negative pole connects the 3rd output of decoding integrated circuit.
2, decoding integrated circuit used is non-locking type.
3, the connection of 7 fixed code of decoding integrated circuit should be identical with the connection of the fixed code of integrated circuit of encoding in transmitting.
4, comparison circuit and bleeder circuit are all resistance and the connecting of resistance.
This measure is explained as follows further:
One, for the previous period, the cardinal principle that single ripple dicode that our unit develops is launched:
In the transmission, coding integrated circuit has 8 bit code positions, wherein 7 is fixed code, another one, for becoming code code, when launching, launch two subcategory numbers, wherein transmitter code is 7 fixed code for the first time, with the first subcategory number of the variation code of, the code that second time is launched is 7 constant fixed code, and the coded signal after the variation of a variation code.Corresponding with the receiving unit in the utility model, in decoding integrated circuit, 7 fixed code are identical with 7 fixed code of integrated circuit of encoding in transmitting, and the first time signal of variation code in decoding integrated circuit is " suspension ", coded signal after second time variation is " 1 ", and present receiving lines of the present utility model, reliably will can receive the variation code sent for the first time is exactly " suspension ", and second time signal is the signal of " 1 ".
Two, in this measure, the structure of twice decoding of generation is: 7 bit codes in integrated 8 bit codes of decoding have been connected into fixed code (03 in Fig. 1), a wherein bit code is become receipts twice signal is a kind of changes code (04 in Fig. 1).When initial condition, the code bit wherein originally presented all the time for displacement code bit is the stationary state of " suspension ", and generation change code just produces after receiving signal.Decoding integrated circuit in the present invention has two outputs, wherein the 3rd output (06 in Fig. 1), and being also called is automatic changing code control end, and the output of this end is connected with transporting discharging type transcoding circuit.Another one is the 4th output (05 in Fig. 1), and also known as the output to rear class, this output rear class is connected, and 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, first of decoding integrated circuit exports connected circuit and is called transporting discharging type transcoding circuit.
Three, becoming code generation suspension with 1 reason of exchanging is: when the 3rd of decoding integrated circuit the exports no-output, the end of oppisite phase of operational amplifier that is connected be low level, because in-phase end has voltage, therefore it exports as high pressure, PNP triode is without bias current, its collector electrode no-output, the change code connected holds neither earth connection, also power supply is not connect, for suspended state, when the 3rd of decoding integrated circuit export have output time, the end of oppisite phase of operational amplifier produces high pressure, it exports as low level, PNP triode base stage produces bias current, emitter communicates with collector electrode, connected change code termination energize, for a high position, this completes the conversion suspended with 1.
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, this circuit produces four kinds of functions and corresponding principle:
(1) receive the first subcategory number of sending of radiating portion principle: as in Fig. 2, under initial condition, namely the first time signal of transmitting is not also received, first of decoding integrated circuit exports no-voltage, the end of oppisite phase of operational amplifier that is connected be low level, because positive terminal is added with voltage, so the output of operational amplifier is high-order, now connected PNP triode base stage is without bias current, therefore its current collection very open-circuit condition, connected change code end had both disconnected ground wire and power supply, so be " suspension " shape, with radiating portion first signal " suspension " sending out corresponding, because its principle does not run counter to the performance of existing product, so can transmit reliable reception first time.
(2) receive the second subcategory number of sending of radiating portion principle: after receiving the first signal sent, at this moment encode integrated circuit first output export 1 signal, the negative phase end voltage of operational amplifier adds high pressure, so operational amplifier exports low level, the PNP triode connected has bias current to exist, emitter is caused to communicate with collector electrode, because emitter has connect high pressure, so become code end into high-order, i.e. one state, to become coded signal " 1 " corresponding with the second time of radiating portion, thus second change coded signal that radiating portion sends can 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, 3rd output of decoding integrated package just has output, thus cause decoding integrated package variation code just to have the new code of " 1 ", 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, non-gate output terminal is low level, second clamp diode (16 in Fig. 2) of performance element, the clamp diode (15 in Fig. 2) of transporting discharging type transcoding circuit work, formation performance element, transporting discharging type transcoding circuit clamper carried out to performance element, transporting discharging type transcoding circuit, so cannot start.
4, there is reception time limit requirement, (its benefit greatly can improve the ability of cracking) principle: the transient state output type decoding integrated circuit that its decoding integrated circuit adopts in this measure, its benefit is, decoding integrated circuit is after receiving the signal sent for the first time, first output has high-order output, but be 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 four factor, thus greatly increase the level of confidentiality cracked.
Five, in transporting discharging type transcoding circuit, two resistance of comparison circuit can adjust the sensitivity of arithmetic unit easily.
After the invention process, after coordinating with the radiating portion applied for before our unit, below outstanding feature:
1, the reception that " suspension " and " 1 " code that radiating portion sends exchanges is achieved, good condition is created for realizing twice emitting, keep the price that it is cheap, remote control product the is possessed highly difficult anti-ability of cracking, for the extensive utilization of remote control product lays the first stone.
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 circuit 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 coder and decoder ic 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.
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 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, and this to crack probability just lower.
6, circuit is reliable, and one is that circuit is simplified, and two is that the sensitivity adjustment of operational amplifier is convenient.
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 figure that the suspension of amplifier type turns the change code receiving circuit of 1.
In figure: 01, radio frequency reception demodulator circuit (as superregenerative reception demodulating unit, or beat reception demodulating unit); 02, decoding integrated circuit; 03, the fixed code of decoding integrated circuit; 04, the change code end of decoding integrated circuit; 05, the 4th of decoding integrated circuit the export; 06, the 3rd of decoding integrated circuit the export; 07, second of decoding integrated circuit export; 08, first of decoding integrated circuit export; 09, performance element; 10, interlock circuit; 11, transporting discharging type transcoding circuit.
Fig. 2 is the practical circuit diagram of this measure relative section.
In figure: 01, radio frequency reception demodulator circuit (as superregenerative reception demodulating unit, or beat reception demodulating unit); 02, decoding integrated circuit; 03, the fixed code of decoding integrated circuit; 04, the change code end of decoding integrated circuit; 05, the 4th of decoding integrated circuit the export; 06, the 3rd of decoding integrated circuit the export; 07, second of decoding integrated circuit export; 08, first of decoding integrated circuit export; 09, performance element; 12, decoding integrated circuit second export or gate diode; 13, decoding integrated circuit first export or gate diode; 14, not gate; 15, the clamp diode of transporting discharging type transcoding circuit; 16, the second clamp diode of performance element; 17, current-limiting resistance; 18, the first 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; 22, comparison circuit; 23, operational amplifier; 24, PNP triode; 26, bleeder circuit.
Embodiment
Fig. 1, Fig. 2 describe the concrete a kind of mode implemented jointly.
1, element is selected: wherein decoding integrated circuit selects 2272.
2, weld: weld by Fig. 2.
3, Detection and adjustment:
(1), to operating state adjustment and detection: when decoding integrated circuit is not when receiving first signal, the output of operational amplifier is high-order, universal instrument test is for there being voltage, otherwise when the 3rd output of decoding integrated circuit has a high position to export, the output no-voltage of operational amplifier, surveying change code end with universal instrument is low pressure, otherwise answers two resistances in comparison circuit.
(2) Function detection, to the integrated automatic changing code bit line of decoding: when launching first time signal, decoding integrated circuit energy reliable reception: when having universal instrument to survey, the 3rd output has high-order output.
(3), the reception connecing twice signal is detected correct: decoding integrated circuit is after receiving the first signal, and secondary signal of fasting ejection very much, at this moment decoding integrated circuit the 4th exports the high position output of oriented rear class.Have voltage to export when having universal instrument to survey this, if when adopting oscilloscope, display screen has high-order reaction.
(4) whether reliably, interlock circuit is detected: the input of surveying performance element with universal instrument, when multidigit output has output simultaneously, no-voltage is answered in the input of performance element, otherwise illustrates that not gate damages, or clamp diode is bad.
(5) Received signal strength whether sequential, is detected: the second output universal instrument or oscilloscope being received decoding integrated circuit, if first launch secondary signal, now decoding integrated circuit second exports without high pressure, if there is high pressure, then operational amplifier or PNP triode are damaged.
(6) whether be non-interlocking type: first output and second of universal instrument or oscilloscope being received decoding integrated circuit exports to be observed if, detecting decoding integrated circuit, after receiving signal, within the time of short duration, signal can disappear, otherwise the model of the integrated circuit that should alternate coding.
Claims (4)
1. the suspension of amplifier type turns the change code receiving circuit of 1, it is characterized in that: be jointly made up of radio frequency reception demodulator circuit, decoding integrated circuit, interlock circuit, performance element, amplifier type transporting discharging type transcoding circuit:
Wherein: the output of receiving demodulation circuit connects the input of decoding integrated circuit, the 3rd of decoding integrated circuit exports and connects transporting discharging type transcoding circuit, and the 4th of decoding integrated circuit exports and connects performance element;
8 bit code positions, 7 live wires connecting ground wire or connection decoding integrated circuit wherein of decoding integrated circuit become fixed code, and another one connects to becoming with transporting discharging type transcoding circuit and becomes code end;
Transporting discharging type transcoding circuit is made up of operational amplifier, PNP triode, comparison circuit, bleeder circuit;
The 3rd of decoding integrated circuit exports one end of the first resistance of concatenation operation amplifier end of oppisite phase, the end of oppisite phase of operational amplifier is connect after the other end of the first resistance is connected in series the second resistance, the in-phase end of operational amplifier connects comparison circuit, the output of operational amplifier connects the base stage of PNP triode, the emitter of PNP triode connects bleeder circuit, and the collector electrode of PNP triode connects change code end;
Interlock circuit: first of decoding integrated circuit exports and exports with second positive pole being connected two or gate diode respectively, or the negative pole of gate diode connects the input of not gate, the output of not gate connects the negative pole of two clamp diodes, what the positive pole of the clamp diode of a clamp diode and transporting discharging type transcoding circuit was connected on the first resistance and the second resistance is connected in series a little, and the positive pole of second clamp diode of another clamp diode and performance element connects the input of executive circuit;
Performance element: the 4th of decoding integrated circuit the exports the one end connecting current-limiting resistance, the other end of current-limiting resistance connects the input of executive circuit, the positive pole of first clamp diode of the input performance element of executive circuit, its negative pole connects the 3rd output of decoding integrated circuit.
2. amplifier type suspension according to claim 1 turns the change code receiving circuit of 1, it is characterized in that: decoding integrated circuit used is non-locking type.
3. amplifier type suspension according to claim 1 turns the change code receiving circuit of 1, it is characterized in that: the connection of 7 fixed code of decoding integrated circuit should be identical with the connection of the fixed code of integrated circuit of encoding in transmitting.
4. amplifier type according to claim 1 suspend turn 1 change code receiving circuit, it is characterized in that: comparison circuit and bleeder circuit are all resistance and the connecting of resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524451.0U CN204089789U (en) | 2014-09-12 | 2014-09-12 | The suspension of amplifier type turns the change code receiving circuit of 1 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524451.0U CN204089789U (en) | 2014-09-12 | 2014-09-12 | The suspension of amplifier type turns the change code receiving circuit of 1 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089789U true CN204089789U (en) | 2015-01-07 |
Family
ID=52182455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420524451.0U Expired - Fee Related CN204089789U (en) | 2014-09-12 | 2014-09-12 | The suspension of amplifier type turns the change code receiving circuit of 1 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204089789U (en) |
-
2014
- 2014-09-12 CN CN201420524451.0U patent/CN204089789U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204089789U (en) | The suspension of amplifier type turns the change code receiving circuit of 1 | |
| CN204031149U (en) | A kind of single ripple dicode receiving system | |
| CN204013501U (en) | A kind of single ripple dicode is the receiving lines of " 1 " change " suspension " code | |
| CN204029146U (en) | There is ageing receiving circuit | |
| CN204029128U (en) | Dicode receiving circuit | |
| CN204046588U (en) | The receiving circuit of two change code | |
| CN204068955U (en) | Double-tube type 0 becomes the change code receiver of 1 | |
| CN204103908U (en) | The dicode receiver of transporting discharging type suspension change 0 yard | |
| CN204046586U (en) | Transporting discharging type 1 becomes the receiving circuit of 0 | |
| CN204031152U (en) | A kind of dicode receiving circuit with timing | |
| CN204103909U (en) | Code receiving lines is become to cast | |
| CN204089791U (en) | Change code is 1 and 0 receiving circuit exchanged | |
| CN204031151U (en) | Dicode is the transcoding receiving circuit of " 1 " change " suspension " | |
| CN204304998U (en) | A kind of transient state type biswitch formula receiving circuit | |
| CN204031141U (en) | A kind of dicode receiver | |
| CN204145475U (en) | A kind of non-gate remote control becomes code receiving circuit | |
| CN204031153U (en) | Transient state type becomes code receiver | |
| CN204089793U (en) | A kind of receiving system changing code | |
| CN204031148U (en) | A kind of transcoding receiving circuit of 0 change 1 | |
| CN204068956U (en) | Time acting type remote-control receiving circuit | |
| CN204304997U (en) | A kind of amplifier type 0 becomes the dicode receiving system suspended | |
| CN204089792U (en) | Transient state type 0 becomes the dicode receiver suspended | |
| CN204066356U (en) | A kind of amplifier type transcoding receiver | |
| CN204031145U (en) | Double-tube type dicode receiving system | |
| CN204031156U (en) | A kind of have ageing change code receiving system |
Legal Events
| 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: 20160912 |