CN204031145U - Double-tube type dicode receiving system - Google Patents
Double-tube type dicode receiving system Download PDFInfo
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- CN204031145U CN204031145U CN201420517331.8U CN201420517331U CN204031145U CN 204031145 U CN204031145 U CN 204031145U CN 201420517331 U CN201420517331 U CN 201420517331U CN 204031145 U CN204031145 U CN 204031145U
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Abstract
Double-tube type dicode receiving system, belong to telecontrol engineering field, by receiving demodulation circuit, decoding integrated circuit, performance element, the change decoding circuit that double-tube type 0 becomes 1 forms the receiving system that can match with the single ripple dicode launch scenario applied for before our unit jointly, the output of receiving demodulation circuit connects the input of decoding integrated circuit, first of decoding integrated circuit exports and connects the change decoding circuit that double-tube type 0 becomes 1, second of decoding integrated circuit exports and connects performance element, in an initial condition, first of decoding integrated circuit exports no-voltage, its variation code is the code bit that the variation code weaving into integrated circuit with transmitting is consistent, receive after transmitting for the first time, decoding integrated circuit first exports and just exports high pressure, start the change decoding circuit formation change code that double-tube type 0 becomes 1, receive second time to transmit, excitation performance element, realize the reception that " 0 " and " 1 " code that radiating portion sends exchanges, good condition is created for realizing twice emitting.
Description
Technical field
Belong to telecontrol engineering 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.
Increase the level of confidentiality degree of coding integrated circuit, namely increase the performance of remote control product, modern society, living standard promotes greatly, electric equipment products are progressively to high-end development, telecontrol engineering has been widely applied in electronic product, but the sensitivity of remote control is quite large by the impact of weather and context, in atrocious weather and environment, remote-control sensitivity is greatly affected, and the level of confidentiality degree of common coding is low, the requirement needed for some product cannot be reached, and senior encoding block cost is high, technical difficulty is large, even if so telecontrol engineering has applied among family, but some vital protectors---anti-theft safety door, still mechanical key is used, address these problems, also need the technology innovated.
Our unit had once been developed into the radiating circuit scheme of multiple energy conversion code for the previous period, the competitiveness improving product is had a very big significance, solves above-mentioned problem, 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 main 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 " 0 " and " 1 " 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 product cost, encode after integrated circuit combination with other senior class, superpower disintegration effect can be realized, remote control product can be used widely.
The measure that this patent proposes is:
1, the change decoding circuit that double-tube type dicode receiving system becomes 1 by receiving demodulation circuit, decoding integrated circuit, performance element, double-tube type 0 forms jointly.
Wherein: the output of receiving demodulation circuit connects the input of decoding integrated circuit, first of decoding integrated circuit exports and connects the change decoding circuit that double-tube type 0 becomes 1, 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 that double-tube type 0 becomes 1 is made up of with resistance two control valves: first of decoding integrated circuit exports the base stage be connected to the first control valve after first trigger resistance, first control valve collector resistance connects power supply, second trigger resistance is connected between the collector electrode of the first control valve and the base stage of the second control valve, second control valve collector resistance connects power supply, emitter all earth connections of the first control valve and the second control valve, the variation code of decoding integrated circuit connects the collector electrode of the second control valve.
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, two control valves are all NPN triodes.
5, the collector resistance of two control valves is all the resistance of 1/4 watt.
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 " 0 ", 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 " 0 ", and second time signal is the signal of " 1 ".
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 initial condition, the code bit wherein originally presented all the time for displacement code bit is the stationary state of " 0 ", and generation change code just produces after receiving signal.Decoding integrated circuit in the present invention has two outputs, wherein first output (07 in Fig. 1), and being also called is automatic changing code control end, and the change decoding circuit that output and the double-tube type 0 of this end become 1 is connected.Another one is that second exports (05 in Fig. 1), and also known as the output 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, first exports connected circuit is called that double-tube type 0 becomes the change decoding circuit of 1.
3, become code to produce 0 and 1 reason of exchanging and be: when decoding integrated circuit first export no-output into zero time, connect the base stage no-voltage of the first control valve, its current collection is very high-order, and the base stage of the second control valve is because high-order, so its current collection very low level, the change code end connected is low level.Otherwise when integrated first output no-output of decoding is high, connect the first control valve base stage be high voltage, its current collection very low level, the base stage of the second control valve is because low level, so its current collection is very high-order, the change code bit line connected is high-order, and thus, the change decoding circuit that double-tube type 0 becomes 1 achieves the conversion of 0 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 in Fig. 2, under initial condition, first of decoding integrated circuit exports no-voltage, connect the base stage no-voltage of the first control valve, NPN triode as Fig. 2 connect, also inverter effect can be done, therefore, when the base stage of the first control valve is low level, its collector electrode must be high-order, the base stage of the second control valve is because be high-order, so its current collection very low level, the change code end connected is low level, with radiating portion first signal " 0 " 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 export 1 signal, connect the first control valve base stage be high voltage, trigger the first control valve, make its current collection very low level, the base stage of the second control valve is because low level, so its current collection is very high-order, the change code bit line connected is into high-order, to become coded signal " 1 " 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 " 0 ", 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 " 1 ".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 low level " 0 ", 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 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 " 0 " and " 1 " 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 product cost, 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 " 0 " 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 " 0 " 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 that just automatically become the code " 1 " needed for second time, twice receiving course is not disorderly, onside after receiving first change code " 0 ".
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 minuscule-type-enterprise produces.
Accompanying drawing explanation
Fig. 1 is total measure figure of double-tube type dicode receiving system.
In figure: 01, receiving demodulation 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, double-tube type 0 becomes the change decoding circuit of 1.
Fig. 2 is the practical circuit diagram of this measure relative section.
In figure: 01, receiving demodulation 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; 010, first trigger resistance; 011, the first control valve; 012, the first control valve collector resistance; 013, second trigger resistance; 014, the second control valve; 015, the second control valve collector resistance.
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 operating state adjustment and detection: adjust two collector resistances, when decoding integrated circuit is not when receiving first signal, the current collection very low level of the second control valve, otherwise when the first output of decoding integrated circuit has a high position to export, the current collection of the second control valve is very high-order to be exported, otherwise should adjust two trigger resistance.
(2) Function detection, to decoding integrated circuit automatic changing code bit line: when launching first time signal, decoding integrated circuit energy reliable reception: when having universal instrument to survey, the first 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 second 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) 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, the resistance of two collector resistances and second trigger resistance should be adjusted.
(5) 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 should change the model of decoding integrated circuit.
Claims (5)
1. double-tube type dicode receiving system, is characterized in that: the change decoding circuit being become 1 by receiving demodulation circuit, decoding integrated circuit, performance element, double-tube type 0 forms jointly:
Wherein: the output of receiving demodulation circuit connects the input of decoding integrated circuit, first of decoding integrated circuit exports and connects the change decoding circuit that double-tube type 0 becomes 1, 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 that double-tube type 0 becomes 1 is made up of with resistance two control valves: first of decoding integrated circuit exports the base stage be connected to the first control valve after first trigger resistance, first control valve collector resistance connects power supply, second trigger resistance is connected between the collector electrode of the first control valve and the base stage of the second control valve, second control valve collector resistance connects power supply, emitter all earth connections of the first control valve and the second control valve, the variation code of decoding integrated circuit connects the collector electrode of the second control valve.
2. double-tube type dicode receiving system according to claim 1, is characterized in that: decoding integrated circuit used is non-locking type.
3. double-tube type dicode receiving system 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. double-tube type dicode receiving system according to claim 1, is characterized in that: two control valves are all NPN triodes.
5. double-tube type dicode receiving system according to claim 1, is characterized in that: the collector resistance of two control valves is all the resistance of 1/4 watt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517331.8U CN204031145U (en) | 2014-09-10 | 2014-09-10 | Double-tube type dicode receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517331.8U CN204031145U (en) | 2014-09-10 | 2014-09-10 | Double-tube type dicode receiving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204031145U true CN204031145U (en) | 2014-12-17 |
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ID=52070969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420517331.8U Expired - Fee Related CN204031145U (en) | 2014-09-10 | 2014-09-10 | Double-tube type dicode receiving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204031145U (en) |
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2014
- 2014-09-10 CN CN201420517331.8U patent/CN204031145U/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: 20141217 Termination date: 20150910 |
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| EXPY | Termination of patent right or utility model |