CN204066356U - A kind of amplifier type transcoding receiver - Google Patents
A kind of amplifier type transcoding receiver Download PDFInfo
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- CN204066356U CN204066356U CN201420517320.XU CN201420517320U CN204066356U CN 204066356 U CN204066356 U CN 204066356U CN 201420517320 U CN201420517320 U CN 201420517320U CN 204066356 U CN204066356 U CN 204066356U
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Abstract
A kind of amplifier type transcoding receiver, belong to communication technique field, a kind of decoding circuit is proposed, by receiving demodulation circuit, decoding integrated circuit, performance element, the change decoding circuit of 1 change 0 forms a kind of amplifier type transcoding receiver that can match with the single ripple dicode launch scenario applied for before our unit jointly, in an initial condition, decoding integrated circuit becomes code end into high-order, after reliable reception first time transmits, first of decoding integrated circuit exports has voltage to export, start the change decoding circuit that 1 becomes 0, success transcoding, receive second time to transmit, excitation performance element, realize the reception that " 1 " and " 0 " code that radiating portion sends exchanges, level of confidentiality degree is improved while the various electrical equipment interference of resistance, and reduce cost of products, remote control product is allowed to have more wide development space.
Description
Technical field
Belong to communication technique field.
Background technology
Society is improving, and science and technology is in development, and remote control product progressively replaces manual product, and particularly some senior anti-theft safety doors, have also used telecontrol engineering.
Telecontrol engineering is the most frequently used far distance controlled technology, but remote control product gets more and more in society, which forms interference source, and present remote control coding is all solid size, in the face of various artificial interference, what kind of measure should be had just to guarantee the accuracy of remote control, if integrated circuit need not be encoded, it is 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 hinder development and the utilization of remote control product widely.
Our unit had once been developed into the radiating circuit scheme of multiple energy conversion code for the previous period, the competitive power improving product is had a very big significance, but also need to receive the receiving circuit becoming code, could become with it as a whole, therefore now also need further development.
Summary of the invention
The fundamental purpose of this patent 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 " 1 " and " 0 " code that radiating portion sends exchanges, good condition is created for realizing twice emitting, level of confidentiality degree is improved while the various electrical equipment interference of resistance, and reduce cost of products, allow remote control product have more wide development space.
The measure that this patent proposes is:
1, a kind of amplifier type transcoding receiver is made up of jointly the change decoding circuit of receiving demodulation circuit, decoding integrated circuit, performance element, 1 change 0.
Wherein: the output of receiving demodulation circuit connects the input of decoding integrated circuit, first of decoding integrated circuit exports the change decoding circuit that connection 1 becomes 0, and second of decoding integrated circuit exports and connects performance element.
Decoding integrated circuit has 8 bit code positions, wherein has 7 for fixed code, and another one is variation code, namely becomes code end.
The change decoding circuit of 1 change 0 is made up of operational amplifier and bleeder circuit: first of decoding integrated circuit exports the end of oppisite phase of concatenation operation amplifier, the in-phase end of operational amplifier connects bleeder circuit, and the output of operational amplifier connects the change code end of decoding integrated circuit.
Bleeder circuit is made up of with lower inclined resistance upper inclined resistance: one end of upper inclined resistance connects with one end of lower inclined resistance, the in-phase end of its contact concatenation operation amplifier, and the other end of upper inclined resistance connects power supply, and the other end of lower inclined resistance connects ground wire.
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, any bit code position that the output of operational amplifier connects is and becomes code end.
5, receiving demodulation circuit is superregenerative reception demodulator circuit.
This measure is explained as follows further:
1, 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, and another one becomes code end, namely changes code, when launching, launch two subcategory numbers, wherein transmitter code is 7 fixed code for the first time, and 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 " 1 ", coded signal after second time variation is " 0 ", and present receiving lines of the present utility model, reliably will can receive the variation code sent for the first time is exactly " 1 ", and second time signal is the signal of " 0 ".
2, 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, and (03 in Fig. 1) becomes receipts twice signal one variation code (04 in Fig. 1) a wherein bit code.When original state, the code bit wherein originally presented all the time for displacement code bit is the stationary state of " 1 ", and generation change code just produces after receiving signal.Decoding integrated circuit in the present invention has two output terminals, wherein first output terminal (07 in Fig. 1), and being also called is automatic changing code control end, and the change decoding circuit that the output and 1 of this end becomes 0 is connected.Another one is that second exports (05 in Fig. 1), and also known as the output terminal to rear class, this output rear class is connected, and is directly 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 connected circuit of the first output is called the change decoding circuit of 1 change 0.
3, become code to produce 1 and 0 reason of exchanging and be: when decoding integrated circuit first export no-output into zero time, when the integrated no-output of decoding, the end of oppisite phase of operational amplifier is low level, because in-phase end is added with voltage, so the output terminal of operational amplifier is high-order, so variation code is high-order, i.e. one state.Have output for time high-order when decoding integrated circuit first exports, operational amplifier exports as low, and the change code end of the decoding integrated circuit connected is low level, i.e. " 0 " state, and thus, the change decoding circuit of 1 change 0 achieves the conversion 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 in Fig. 2, under original state, first of decoding integrated circuit exports no-voltage, the end of oppisite phase of operational amplifier is low level, because in-phase end has added positive voltage, therefore the output of operational amplifier is high-order, with radiating portion first signal " 1 " sending out corresponding, because its principle does not run counter to the performance of existing product, so the first time signal launched 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 first output terminal export 1 signal, high pressure is added at the negative phase end of operational amplifier, the output of operational amplifier is impelled to be low, be connected to decoding integrated circuit variation code also for low, to become coded signal " 0 " corresponding with the second time of radiating portion, thus can receive second that radiating portion sends and become coded signal.
(3) receive twice change code and have the strict demand of sequential and principle: twice signal sequence requiring radiating portion to launch of the present invention has strict demand, (main cause be criminal commit a crime difficulty) can not be disorderly.Its reason is that after only having first time to launch correct code " 1 ", the decoding integrated circuit in the present invention first output just has output, thus makes the decoding integrated circuit in the present invention produce the new code of " 0 ".Cause the reception of second time signal.If instead criminal first launches secondary signal, now because the code of decoding integrated circuit of the present invention is in the state of a high position " 1 ", do not meet with transmitter code, do not have output.So twice signal that radiating portion sends has strict timing requirements.
(4), there is reception time limit requirement, (its benefit greatly can improve the ability of cracking) principle: the transient state output type coding integrated circuit that its decoding integrated circuit adopts in this measure, its benefit is, coding integrated circuit is after receiving the signal sent for the first time, first output terminal 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 the level of confidentiality cracked is greatly increased.
After the invention process, after coordinating with the radiating portion applied for before our unit, below outstanding feature:
1, realize the reception that " 1 " and " 0 " code that radiating portion sends exchanges, creating good condition for realizing twice emitting, while the various electrical equipment interference of resistance, improving level of confidentiality degree, and reduce cost of products, allowing remote control product have more wide development space.
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 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 " 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 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 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 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.
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 microbusiness produces.
Accompanying drawing explanation
Fig. 1 is a kind of total measure figure of amplifier type transcoding receiver.
In figure: 01, superregenerative reception demodulator circuit; 02, decoding integrated circuit; 03, the fixed code of decoding integrated circuit; 04, the change code end of decoding integrated circuit; 05, second of decoding integrated circuit export; 06, performance element; 07, first of decoding integrated circuit export; 08, the change decoding circuit of 1 change 0.
Fig. 2 is the practical circuit diagram of this measure relative section.
In figure: 01, superregenerative reception demodulator circuit; 02, decoding integrated circuit; 03, the fixed code of decoding integrated circuit; 04, the change code end of decoding integrated circuit; 05, second of decoding integrated circuit export; 06, performance element; 07, first of decoding integrated circuit export; 09, operational amplifier; 010, bleeder circuit.
Embodiment
Fig. 1 and Fig. 2 describes 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 duty adjustment and detection: adjust peripheral power supply resistance, when decoding integrated circuit is not when receiving first signal, the output of operational amplifier is high voltage, otherwise when the first output terminal of decoding integrated circuit has a high position to export, the output terminal no-output of operational amplifier, otherwise the resistance of resistance in bleeder circuit should be adjusted.
(2) Function detection, to the integrated automatic changing code bit line of decoding: when launching first time signal, decoding of the present invention integrated energy reliable reception: when having multimeter to survey, the first output terminal has high-order output.
(3), the reception connecing twice signal is detected correct: after coding is integrated in and receives the first signal, secondary signal of fasting ejection very much, integrated second high position exporting oriented rear class of at this moment encoding exports.Have voltage to export when having multimeter to survey this, if when adopting oscillograph, display screen has high-order reaction.
(4) Received signal strength whether sequential, is detected: the second output terminal multimeter or oscillograph being received decoding integrated circuit, if first launch secondary signal, now decoding integrated circuit second exports without high pressure, if there is high pressure, should adjust resistance in bleeder circuit.
(5) whether be non-interlocking type: first output and second of multimeter or oscillograph 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 (5)
1. an amplifier type transcoding receiver, is characterized in that: be jointly made up of the change decoding circuit of receiving demodulation circuit, decoding integrated circuit, performance element, 1 change 0:
Wherein: the output of receiving demodulation circuit connects the input of decoding integrated circuit, first of decoding integrated circuit exports the change decoding circuit that connection 1 becomes 0, and second of decoding integrated circuit exports and connects performance element;
Decoding integrated circuit has 8 bit code positions, wherein has 7 for fixed code, and another one is variation code, namely becomes code end;
The change decoding circuit of 1 change 0 is made up of operational amplifier and bleeder circuit: first of decoding integrated circuit exports the end of oppisite phase of concatenation operation amplifier, the in-phase end of operational amplifier connects bleeder circuit, and the output of operational amplifier connects the change code end of decoding integrated circuit;
Bleeder circuit is made up of with lower inclined resistance upper inclined resistance: one end of upper inclined resistance connects with one end of lower inclined resistance, the in-phase end of its contact concatenation operation amplifier, and the other end of upper inclined resistance connects power supply, and the other end of lower inclined resistance connects ground wire.
2. a kind of amplifier type transcoding receiver according to claim 1, is characterized in that: decoding integrated circuit used is non-locking type.
3. a kind of amplifier type transcoding receiver according to claim 1, 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. a kind of amplifier type transcoding receiver according to claim 1, is characterized in that: any bit code position that the output of operational amplifier connects is change code end.
5. a kind of amplifier type transcoding receiver according to claim 1, is characterized in that: receiving demodulation circuit is superregenerative reception demodulator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517320.XU CN204066356U (en) | 2014-09-10 | 2014-09-10 | A kind of amplifier type transcoding receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517320.XU CN204066356U (en) | 2014-09-10 | 2014-09-10 | A kind of amplifier type transcoding receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204066356U true CN204066356U (en) | 2014-12-31 |
Family
ID=52207816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420517320.XU Expired - Fee Related CN204066356U (en) | 2014-09-10 | 2014-09-10 | A kind of amplifier type transcoding receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204066356U (en) |
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2014
- 2014-09-10 CN CN201420517320.XU patent/CN204066356U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20141231 Termination date: 20150910 |
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| EXPY | Termination of patent right or utility model |