CN204089775U - A kind of crystal oscillator type emitter - Google Patents
A kind of crystal oscillator type emitter Download PDFInfo
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- CN204089775U CN204089775U CN201420494744.9U CN201420494744U CN204089775U CN 204089775 U CN204089775 U CN 204089775U CN 201420494744 U CN201420494744 U CN 201420494744U CN 204089775 U CN204089775 U CN 204089775U
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Abstract
A kind of crystal oscillator type emitter, belong to electronic technology field, by battery supply, control switch, indicating circuit, operation amplifier oscillator, coding integrated circuit, radiating circuit forms jointly, control switch becomes the power supply of each several part after connecting battery supply, whether indicating circuit energy detection control switch connects, operation amplifier oscillator two on export respectively control coding integrated circuit first bit line with become code end, when operation amplifier oscillator starts vibration, first bit line of coding integrated circuit also starts high-low cycle with change code end, change code is sent by radiating circuit after modulation, greatly improve the level of confidentiality degree of common coding, there is the very high anti-ability of cracking, because rudimentary coding integrated circuit has cheap advantage, so its product has very strong competitiveness.
Description
Technical field
Belong to electronic technology field.
Background technology
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 is because remote control product also exists following problem: 1, the sensitivity of remote control is quite large by the impact of weather and context, and in atrocious weather and environment, remote-control sensitivity is greatly affected; 2, the level of confidentiality degree of common coding is low, cannot reach the requirement needed for some product, and senior encoding block cost is high, and technical difficulty is large, so telecontrol engineering also fails extensively to apply in some high-end products.
Address these problems, also need the technology innovated, thus the research of remote control is also being continued, if imagination can produce the coding circuit of highly dense pole with cheap coding integrated circuit, obviously the competitiveness improving product is being had a very big significance.
Summary of the invention
Main purpose of the present utility model proposes a kind of new measure, form a kind of novel emitter, this emitter makes remote control no longer be subject to the impact of weather and surrounding environment, cheap price advantage is kept while promoting remote control level of confidentiality degree, the code sent has possessed conversion, and 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, a kind of crystal oscillator type emitter is made up of jointly battery supply, control switch, indicating circuit, operation amplifier oscillator, coding integrated circuit, radiating circuit.
Wherein: one end of control switch connects battery supply positive pole, and the other end is power line, the power end of oscillator, coding integrated circuit, radiating circuit, indicating circuit is amplified in concatenation operation.
Protective circuit is made up of protective resistance and indicator light: one end connecting power line of protective resistance, ground connection after the other end connection indicator light of protective resistance.
Operation amplifier oscillator: the negative phase end of the first operational amplifier connects the tie point of feedback resistance and integrating capacitor, the other end of feedback resistance connects the output of the first operational amplifier, integrating capacitor other end ground connection, the positive terminal of the first operational amplifier connects lower inclined resistance to ground, upper inclined resistance one end connects the output of the first operational amplifier, the positive terminal of the other end the first operational amplifier repeatedly, differential capacitance positive pole connects power supply, negative pole connects the positive terminal of diac to the first operational amplifier, discharge diode one end ground connection, the other end connects the negative pole of differential capacitance, the output of the first operational amplifier and first of operation amplifier oscillator exports, the in-phase end of the second operational amplifier is connected to first of operation amplifier oscillator and exports, and namely the output of the second operational amplifier be that second of operation amplifier oscillator exports.
First bit line concatenation operation of coding integrated circuit is amplified second of oscillator and is exported.
The change code end concatenation operation of coding integrated circuit is amplified first of oscillator and is exported, and one of them bit line concatenation operation of coding integrated circuit is amplified second of oscillator and exported.
The fixed code of coding integrated circuit connects power line, and all the other bit lines of coding integrated circuit connect power line.
First bit line concatenation operation of coding integrated circuit is amplified second of oscillator and is exported.
Radiating circuit is made up of radio circuit and copper foil antenna.
Become power line after the positive pole connection control switch of battery supply, protective resistance is connected between power line and indicator light, the other end ground connection of indicator light.
Copper foil antenna is specific small English alphabet n shape, the size of copper foil antenna is the width of Copper Foil is 2 millimeters, the length of two the vertical Copper Foils in left and right is 30 millimeters, and the spacing of two vertical Copper Foils is 20 millimeters, and the height that kiss connects the arc Copper Foil of two vertical Copper Foils is 4.5 millimeters.
Radio circuit: one end of copper foil antenna is input, i.e. power line, the live wire of coding integrated circuit connects on the power line.
The output of coding integrated circuit connects one end of modulated resistance, the base stage of another termination modulation triode of modulated resistance, the grounded emitter of modulation triode, modulation transistor collector is divided into three tunnels, the first via connects the emitter of vapotron, second tunnel connects a termination in crystal oscillator three terminations, and the 3rd tunnel connects one end of a shunt capacitance, on the input of another termination copper foil antenna of this electric capacity.
Another two terminations of crystal oscillator, start to exchange fire line input in a termination, another termination connects the base stage of vapotron.
The base stage of vapotron connects a resistance, and another termination of resistance is connected on copper foil antenna input.
The input of copper foil antenna has also connect a tunable capacitor, the output of the other end connection copper foil antenna of tunable capacitor, the i.e. collector electrode of vapotron.
Tunable capacitor is an also in parallel electric capacity.
2, discharge diode and diac are all face fit type diodes.
3, the second connection of the second operational amplifier is that end of oppisite phase and output link together, and the output of oscillator is amplified in in-phase end concatenation operation, and the output of the second operational amplifier is second output of operation amplifier oscillator.
This measure is explained as follows further:
1, in this measure, the oscillating unit realizing becoming code is a very important part, if person aims at a kind of a kind of modified model oscillating circuit be made up of door integrated circuit of this line design, the principle produced is: when the output of operational amplifier (303 in Fig. 2) is for time high-order, the feedback resistance (302 in Fig. 2) be connected with inverting input by output is charged to integrating capacitor (301 in Fig. 2), after the voltage of integrating capacitor exceeds in-phase end voltage, operational amplifier output terminal changes, low level is become from a high position, at this moment in-phase end voltage step-down, become the front half period of vibration, at this moment integrating capacitor passes through conductive discharge, when end of oppisite phase voltage low to in-phase end voltage time, operational amplifier exports and again becomes a high position from low level, become the later half cycle of vibration, such generation second round, three cycles and without one number time, produce vibration.
In circuit, add differential capacitance (307 in Fig. 2), differential capacitance design becomes electrodeless, and decrease the electric leakage of electric capacity, be more conducive to starting of oscillation, operational amplifier does not have particular/special requirement, selects Unit 2/4 of operational amplifier 324.
2, in measure 1, operation amplifier oscillator defines two kinds of relations with coding integrated circuit, a kind of relation is conversion coding integrated circuit being become to code end, the coded portion of coding integrated circuit has been divided into two parts, a part is the fixed code connected in advance, and another part exports the change code be connected.When manual operation is launched, oscillating unit vibrates, and the change code of coding integrated circuit just becomes 0 and 1 two states, and integrated circuit of at this moment encoding just can only become dicode two kinds output by a kind of single code transmissions from former.By the excitation to modulation triode, reach the object of dicode modulate emission.
Another kind of relation is the conversion of one of them bit line to coding integrated circuit, the effect of inverter is by voltage rotation from high to low or from low to high, therefore, when first of operation amplifier oscillator exports as time high-order, it is low level that second of operation amplifier oscillator just exports, first bit line of integrated circuit of so encoding is just low level, namely 0, if first of operation amplifier oscillator exports as low level, it is just high-order that second of operation amplifier oscillator exports, so encode first bit line of integrated circuit just for high-order, namely 1, because which form the conversion that coded set becomes one of them bit line of circuit.
Inverter also has the effect of shaping, is the square wave of rule, obtains irregular waveform shaping the voltage of standard, be selected to radiating circuit very much.
3, in measure 1, its feature one is, adjustable at the frequency agile due to oscillating unit, completely can the such ideal situation of furnishing when producing, and within the time required for operation push-button, (as 0.5 second), completes the necessary condition of twice change code.Its feature two is, need not two pieces because only using a block forecast integrated circuit, and this integrated circuit chip select end ground connection, circuit is reliable.
The distance of 4, launching and sensitivity and weather have a significant impact, and high-end remote control product is very high to the requirement of sensitivity, if by traditional method for designing, be difficult to ensure to meet the requirement of adjusting the distance, its reason is, general transmitting can the Iterim Change position of launching and distance, can receive signal just can as long as can meet reception at that time.If special product, the requirement of adjusting the distance is strict, once at bad weather, is just difficult to the performance ensureing product, so must increase necessary measure.And this transmitting largely can improve sensitivity, this is because specific a kind of copper foil antenna is specific small English alphabet n shape, article two, connect with arc Copper Foil kissing above vertical Copper Foil, the size of copper foil antenna is the width of Copper Foil is 2 millimeters, the length of two the vertical Copper Foils in left and right is 30 millimeters, article two, the spacing of vertical Copper Foil is 20 millimeters, and the height that kiss connects the arc Copper Foil of two vertical Copper Foils is 4.5 millimeters.Strict formulation, the better coupling that allowed launching and receiving have, experiment proves, such being transmitted in decreases weather and surrounding environment to a great extent on the impact transmitted.
5, in radiating circuit, adopt crystal oscillator type circuit, its benefit is that radio frequency is stablized, and characteristic is good, so may be used for the place needing remote control distance far away.
After implementing or under the cooperation of the supporting receiver of designer, the present invention has following outstanding advantage to be:
1, the level of confidentiality degree of coding integrated circuit, become dicode by single code transmissions to launch, a yard line is not only made to have had conversion, and make bit line there has also been conversion, after coordinating with supporting reception, enhance and prevent cracking ability, because the integrated circuit cost of common coding is low, thus, after making product, there is very strong competitiveness.
2, with the coordinating of rolling code circuit, it decodes difficulty is superpower, because rolling code is the coding of a class character, and in this measure, dicode is launched is the coding of a class character, and two kinds of coded combinations of different nature are larger than a kind of code breaks difficulty of character.
3, the dicode of this measure is launched reliable, when its reason is the change code of transmitting dicode generation, can not be disorderly, and only can repeat, two kinds become code state obviously, and offer a clear explanation, the receiving unit designed with inventor extremely mates.
4, operation amplifier oscillating circuit circuit is simple, and easy oscillates, vibrational stabilization, is easy to coordinate with overall circuit.
5, in radiating circuit, adopt crystal oscillator type circuit, its benefit is that radio frequency is stablized, and characteristic is good, so may be used for the place needing remote control distance far away.
6, special a kind of copper foil antenna of English lower case N-shaped, coordinates with radiating circuit, reduces weather and surrounding environment to the impact of launching, improves transmitting sensitivity.
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 a kind of total measure schematic diagram of crystal oscillator type emitter.
In figure: 1, operation amplifier oscillator; 2, first output of operation amplifier oscillator, the change code end of integrated circuit of namely encoding; 3, coding integrated circuit; 4, the fixed code of coding integrated circuit; 5, the output of coding integrated circuit; 6, second of operation amplifier oscillator export, first bit line of integrated circuit of namely encoding; 7, all the other bit lines of coding integrated circuit; 8, radiating circuit.
Fig. 2 is operation amplifier pierce circuit figure.
In figure: 2, namely the output of operation amplifier oscillator encodes the change code end of integrated circuit; 6, second of operation amplifier oscillator export, first bit line of integrated circuit of namely encoding; 301, integrating capacitor; 302, feedback resistance; 303, the first operational amplifier; 305, upper inclined resistance; 306, lower inclined resistance; 307, differential capacitance; 308, discharge diode; 309, diac; 310, the second operational amplifier.
Fig. 3 is the circuit diagram of measure 3.
In figure: 2, namely the output of operation amplifier oscillator encodes the change code end of integrated circuit; 6, second of operation amplifier oscillator export, first bit line of integrated circuit of namely encoding; 301, integrating capacitor; 302, feedback resistance; 303, the first operational amplifier; 305, upper inclined resistance; 306, lower inclined resistance; 307, differential capacitance; 308, discharge diode; 309, diac; 310, the second operational amplifier.
Fig. 4 is radiating circuit figure.
In figure: 1-1, battery supply; 3, coding integrated circuit; 5, the output of coding integrated circuit; 20, control switch; 21, protective resistance; 22, indicator light; 23, crystal oscillator; 24, the base resistance of vapotron; 25, shunt capacitance; 26, tunable capacitor; 27, electric capacity in parallel with tunable capacitor; 28, vapotron; 29, modulated resistance; 30, triode is modulated; 31, copper foil antenna.
Fig. 5 is copper foil antenna schematic diagram.
In figure: 31, copper foil antenna; 50, the spacing of two vertical Copper Foils; 51, the length of vertical Copper Foil; 52, the width of Copper Foil; 53, kiss connects the height of the arc Copper Foil of two vertical Copper Foils.
concrete embodiment
Fig. 1 to Fig. 5 describes a kind of embodiment jointly.
1, element is selected: integrated circuit of wherein encoding selects 2262, and high-frequency tube selected by triode, also can select 8050 triodes.
2, weld: radiating circuit welds as shown in Figure 4, and operation amplifier oscillator welds as shown in Figure 2 or Figure 3; Copper foil antenna as shown in Figure 5.
3, modulate:
Adjustment operation amplifier oscillator relevant parameters:
Adjustment duration of oscillation: adjustment duration of oscillation: be connected on the output of oscillating circuit with oscillographic red bar pen, black meter pen ground connection,
Adjustment feedback resistance 302, with the size of integrating capacitor 301, observes oscillatory condition, makes it frequency and meet the requirements.If frequency is too fast add bulky capacitor or resistance value, otherwise reduces its value.
4, radio frequency and modulation operating state is adjusted
If make receiver with oscilloscope, be not directly connected with reflector, at this moment when pressing reflector, oscilloscope can respond, and represents that radio frequency is working properly with modulation.Otherwise the inductance value of induction regulation coil should be adjusted, or the resistance value of coding ic output, until sensitivity meets the requirements.
5, make receiver with common single code reception device, now receiving unit can not receive signal.If with the specific dicode signal receiver of inventor's design, then dicode receiver can receive signal.
Claims (3)
1. a crystal oscillator type emitter, is characterized in that: be jointly made up of battery supply, control switch, indicating circuit, operation amplifier oscillator, coding integrated circuit, radiating circuit;
Wherein: one end of control switch connects battery supply positive pole, and the other end is power line, the power end of oscillator, coding integrated circuit, radiating circuit, indicating circuit is amplified in concatenation operation;
Protective circuit is made up of protective resistance and indicator light: one end connecting power line of protective resistance, ground connection after the other end connection indicator light of protective resistance;
Operation amplifier oscillator: the negative phase end of the first operational amplifier connects the tie point of feedback resistance and integrating capacitor, the other end of feedback resistance connects the output of the first operational amplifier, integrating capacitor other end ground connection, the positive terminal of the first operational amplifier connects lower inclined resistance to ground, upper inclined resistance one end connects the output of the first operational amplifier, the positive terminal of the other end the first operational amplifier repeatedly, differential capacitance positive pole connects power supply, negative pole connects the positive terminal of diac to the first operational amplifier, discharge diode one end ground connection, the other end connects the negative pole of differential capacitance, the output of the first operational amplifier and first of operation amplifier oscillator exports, the in-phase end of the second operational amplifier is connected to first of operation amplifier oscillator and exports, and namely the output of the second operational amplifier be that second of operation amplifier oscillator exports,
First bit line concatenation operation of coding integrated circuit is amplified second of oscillator and is exported;
The change code end concatenation operation of coding integrated circuit is amplified first of oscillator and is exported, and one of them bit line concatenation operation of coding integrated circuit is amplified second of oscillator and exported;
The fixed code of coding integrated circuit connects power line, and all the other bit lines of coding integrated circuit connect power line;
First bit line concatenation operation of coding integrated circuit is amplified second of oscillator and is exported;
Radiating circuit is made up of radio circuit and copper foil antenna;
Become power line after the positive pole connection control switch of battery supply, protective resistance is connected between power line and indicator light, the other end ground connection of indicator light;
Copper foil antenna is specific small English alphabet n shape, the size of copper foil antenna is the width of Copper Foil is 2 millimeters, the length of two the vertical Copper Foils in left and right is 30 millimeters, and the spacing of two vertical Copper Foils is 20 millimeters, and the height that kiss connects the arc Copper Foil of two vertical Copper Foils is 4.5 millimeters;
Radio circuit: one end of copper foil antenna is input, i.e. power line, the live wire of coding integrated circuit connects on the power line;
The output of coding integrated circuit connects one end of modulated resistance, the base stage of another termination modulation triode of modulated resistance, the grounded emitter of modulation triode, modulation transistor collector is divided into three tunnels, the first via connects the emitter of vapotron, second tunnel connects a termination in crystal oscillator three terminations, and the 3rd tunnel connects one end of a shunt capacitance, on the input of another termination copper foil antenna of this electric capacity;
Another two terminations of crystal oscillator, start to exchange fire line input in a termination, another termination connects the base stage of vapotron;
The base stage of vapotron connects a resistance, and another termination of resistance is connected on copper foil antenna input;
The input of copper foil antenna has also connect a tunable capacitor, the output of the other end connection copper foil antenna of tunable capacitor, the i.e. collector electrode of vapotron;
Tunable capacitor is an also in parallel electric capacity.
2. a kind of crystal oscillator type emitter according to claim 1, is characterized in that: discharge diode and diac are all face fit type diodes.
3. a kind of crystal oscillator type emitter according to claim 1, it is characterized in that: the second connection of the second operational amplifier is, end of oppisite phase and output link together, the output of oscillator is amplified in in-phase end concatenation operation, and the output of the second operational amplifier is second output of operation amplifier oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494744.9U CN204089775U (en) | 2014-08-31 | 2014-08-31 | A kind of crystal oscillator type emitter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420494744.9U CN204089775U (en) | 2014-08-31 | 2014-08-31 | A kind of crystal oscillator type emitter |
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| CN204089775U true CN204089775U (en) | 2015-01-07 |
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| CN201420494744.9U Expired - Fee Related CN204089775U (en) | 2014-08-31 | 2014-08-31 | A kind of crystal oscillator type emitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
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2014
- 2014-08-31 CN CN201420494744.9U patent/CN204089775U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
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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: 20150107 Termination date: 20160831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |