CN203984407U - A kind of induction-regulated radiating circuit - Google Patents
A kind of induction-regulated radiating circuit Download PDFInfo
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- CN203984407U CN203984407U CN201420473837.3U CN201420473837U CN203984407U CN 203984407 U CN203984407 U CN 203984407U CN 201420473837 U CN201420473837 U CN 201420473837U CN 203984407 U CN203984407 U CN 203984407U
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Abstract
A kind of induction-regulated radiating circuit, belong to communication technique field, with oscillating circuit control coding integrated circuit, form the transmitting of a kind of change code, by unijunction transistor oscillating circuit, coding integrated circuit, radio circuit, indicating circuit, control switch forms jointly, control switch has connected battery supply, after control switch is connected, each circuit is charged immediately, the starting of oscillation immediately of unijunction transistor oscillating circuit, its output connects the change code end of coding integrated circuit, the output of coding integrated circuit connects the modulated resistance in radio circuit, the change code end of integrated circuit of making to encode forms 1 and 0 circulation, what make that radio circuit sends is no longer single code, radio circuit adopts induction-regulated, reduce volume, the generation of radio frequency adopts a pipe with modulation simultaneously, increased like this reliability of circuit, if with coordinating of rolling code circuit, level of confidentiality is higher, make remote control product possess vast potential for future development.
Description
Technical field
Belong to communication technique field.
Background technology
Ready-made a lot of household electrical appliances, all used telecontrol engineering, because it is convenient simple again, less demanding to level of confidentiality degree, thereby this is prevailing telecontrol engineering, if be used on antitheft or automobile, level of confidentiality degree increases greatly, if level of confidentiality degree is not high enough, easily by people, cracked, so antitheft equaling indulges in empty talk, automobile case of disappearance also happens occasionally, telecontrol engineering to be used in high-grade products, strengthening level of confidentiality degree is a great problem, from present technical merit, present coding integrated circuit, a kind of is the kind that rolling code is representative of take of higher gears, the advantage of this adhesive integrated circuit is to crack difficulty, shortcoming is price, technical difficulty is large simultaneously.Another kind of is the coding that is encoded to three kinds of states, as the 2262 coding integrated circuit kinds with representative, the integrated advantage of this class is that price is low, so the product of making has very large price competitiveness, market prospects are wide, but shortcoming due to coding the simple close utmost point not high, so can not be widely used in the product of having relatively high expectations.
How to promote the level of confidentiality degree of encoding block, this also needs the innovative technology continuing, and therefore also fails to obtain now adequate solution.
Summary of the invention
Main purpose of the present utility model is to propose a kind of new measure, by oscillating circuit control coding integrated circuit, forms the transmitting of a kind of changes code, reduces product cost, and with other higher level code integrated circuit combination after, level of confidentiality is higher, prevents cracking ability stronger.
The measure that this patent proposes is:
1, a kind of induction-regulated radiating circuit consists of jointly unijunction transistor oscillating circuit, coding integrated circuit, radio circuit, indicating circuit, control switch.
Wherein: unijunction transistor oscillating circuit: the first base stage of unijunction transistor connects power supply, the second base stage connects a resistance to ground, the transmitting of unijunction transistor connects one end of adjustable resistance, after another termination fixed resistance of adjustable resistance, receive the positive pole of integrating capacitor, the minus earth of integrating capacitor, integrating resistor is received between power supply and integrating capacitor, and the second base stage of unijunction transistor becomes the output of unijunction transistor oscillating circuit, connects the change code end of coding integrated circuit.
Radio circuit is comprised of copper foil antenna and transmitting tube, frequency modulation inductance, controllable impedance.
Frequency modulation inductance one end in frequency-modulation element links together to connect with the power end of weaving into integrated circuit and after control switch, connects power supply, one end of the other end connection copper foil antenna of frequency modulation inductance, transmitting tube collector electrode is connected to one end of copper foil antenna, transmitting tube base resistance is connected between the base stage and collector electrode of transmitting tube, between the base stage of transmitting tube and emitter, connect a resistance, the emitter of transmitting tube has also connected the other end of modulated resistance, one end of another termination controllable impedance of copper antenna, the other end of controllable impedance connects the collector electrode of transmitting tube, controllable impedance parallel connection a shunt capacitance, the copper foil antenna other end has also connect an electric capacity to the emitter of transmitting tube.
One end of control switch connects battery supply, and the other end of control switch is the power supply of unijunction transistor oscillating circuit, coding integrated circuit, radio circuit, indicating circuit.
Indicating circuit is comprised of protective resistance and indicator light.
One end of protective resistance is connected to the other end of control switch, ground connection after the other end connection indicator light of protective resistance.
The output of coding integrated circuit connects one end of modulated resistance, and the other end of modulated resistance connects the emitter of transmitting tube.
2, the first connection of coding integrated circuit fixed code is to connect power supply, and the second connection of coding integrated circuit fixed code is ground connection.
3, the second base stage resistance to earth of unijunction transistor can be adjustable resistance.
This measure is further explained as follows:
When transmitting switches on power,, after control switch closure, unijunction transistor oscillating circuit starts rapidly, because the change code of coding integrated circuit has terminated in the output of unijunction transistor oscillating circuit, therefore, can send the code of conversion.
1, described in measure 1, if person has aimed at this line design a kind of modified model oscillating circuit, the principle that forms vibration is as follows: after power supply is opened, integrating capacitor (102 in Fig. 1) charging that first power supply connects to the emitter of unijunction transistor (106 in Fig. 1) by integrating resistor (101 in Fig. 1), when the magnitude of voltage of integrating capacitor exceeds after threshold values, unijunction transistor conducting, unijunction transistor has an important electrical characteristic---negative resistance charactertistic, utilize this characteristic, the resistance to earth of the second base stage (105 in Fig. 1) produces high-order, thereby circuit output is high-order, form the front half period of vibration, after the integrating capacitor that emitter connects is discharged, along with emitter voltage constantly declines, drop to behind valley point, after emitter voltage is lower than supply voltage, unijunction transistor is closed, circuit no-output, become the later half cycle of vibration, in order to make vibration meet the requirement of whole circuit, designer has increased a fixed resistance (103 in Fig. 1) and an adjustable resistance (104 in Fig. 1) newly between integrating capacitor and emitter, its main purpose is to adjust the time of integrating capacitor electric discharge, make it the requirement of the whole circuit of output coincidence circuit of vibration.
2, in measure 1, unijunction transistor oscillating circuit has formed such annexation with coding integrated circuit, the coded portion of coding integrated circuit has been divided into two parts, a part is the fixed code having connected in advance, this fixed code can ground connection, also can connect power supply, flexible and changeable, another part is the variation code being connected with unijunction transistor oscillating circuit.When manual operation is launched, the vibration of unijunction transistor oscillating circuit, the change code end of coding integrated circuit has just become 0 and 1 two states, and the integrated circuit of at this moment encoding just can only a kind of solid size transmitting become two kinds of outputs of dicode from former.By the excitation to modulating tube, reached the object of dicode modulate emission.
3, because the frequency agile of unijunction transistor oscillating circuit is adjustable, completely can the such ideal situation of furnishing when producing, at operation push-button in the needed time, (as 0.5 second), has completed the necessary condition of twice variation code.Because only need not two with a coding integrated circuit, coding integrated circuit chip select end ground connection, circuit is reliable.
4, except unijunction transistor oscillating circuit and fgs encoder peripheral element and element, formed radio frequency and produced and launch necessary part, transmitting tube wherein and modulating tube are shared, simple and convenient.
5,, in radio frequency, this patent one is to adopt induction-regulated circuit, reduces volume, the 2nd, and the generation of radio frequency adopts a pipe with modulation simultaneously, has increased like this reliability of circuit.Because triode belongs to consumable accessory, above 2 points, have reduced whole space face simultaneously and have occupied situation.
6, in radio frequency, this patent adopts induction-regulated circuit, and its benefit is that induction regulation coil is little, and than fixedly crystal oscillator volume is little, its antenna adopts copper platinum in printed panel to apply into certain switch, and whole volume is little, can be contained in less launch-box.
Enforcement is rear or under the cooperation of the supporting receiver of designer, the present invention has following outstanding advantage to be:
1, realized the change code form of the coding integrated circuit of low price, promoted the character of coding integrated circuit, what send is no longer the solid size being easily cracked, but has had conversion, has the very high anti-ability of cracking.
If 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 transmitting is the coding of a class character, two kinds of coded combinations of different nature, crack difficulty than a kind of coding of character larger.
3, reliably, its reason is while launching the change code of dicode generation to the transmitting of the dicode of this measure, can be disorderly, only can repeat, and two kinds of change yard states are obvious, offer a clear explanation, and the receiving unit designing with inventor extremely mates.
4, circuit is reliable, and the one, circuit is simplified, and the 2nd, easy failed part triode only has one, and the 3rd, after induction regulation coil envelope is filled with, inductance value is difficult for changing.Four, be that antenna is applied into by printed panel, do not produce variation in shape, do not affect radio frequency, adopted the elite of universal design.
5, produce easily, the one, equipment that need not be valuable and instrument, the 2nd, technology is simple, the 3rd, circuit simplify and element requirement used low, so can produce very high first-pass yield, very applicable minuscule-type-enterprise produces.
Accompanying drawing explanation
Fig. 1 is unijunction transistor oscillating circuit figure.
In figure: 1-1, power line; 101, integrating resistor; 102, integrating capacitor; 103, fixed resistance; 104, adjustable resistance; 105, the resistance to earth of the second base stage; 106, unijunction transistor; 107, the control end of bidirectional analog switch circuit, the i.e. output of unijunction transistor oscillating circuit.
Fig. 2 is radio circuit figure.
In figure: 1-1, power line; 1, unijunction transistor oscillating circuit; 3, coding integrated circuit; 6, the fixed code of coding integrated circuit; 8, the output of coding integrated circuit; 9, modulated resistance; 30, the ground terminal of coding integrated circuit; 31, the power end of coding integrated circuit; 32, transmitting tube; 33, transmitting tube base resistance; 34, control switch; 35, frequency modulation inductance; 36, copper foil antenna; 37, the electric capacity that the copper foil antenna other end and transmitting tube emitter connect; 38, the shunt capacitance in parallel with controllable impedance; 39, controllable impedance; 107, the output of unijunction transistor oscillating circuit, the change code end of the integrated circuit of encoding.
Embodiment
Fig. 1, Fig. 2, a kind of mode of concrete enforcement has been described jointly.
Unijunction transistor oscillating circuit is pressed the welding shown in Fig. 1, and radio circuit welds as Fig. 2.
1, select element: the integrated circuit of wherein encoding selects 2262, and transmitting tube is selected high-frequency tube, also can select 8050 triodes.
2, adjust oscillating unit relevant parameters:
(1), adjust duration of oscillation: with oscillographic red pen, be connected on the output of oscillating circuit black meter pen ground connection.
The size of adjusting resistance 101,103,104 and integrating capacitor 102, observes vibration situation, makes it frequency and meets the requirements.If the too fast increasing electric capacity of frequency or resistance value, otherwise reduce its value.
(2), adjust oscillation amplitude: with oscillographic red pen, be connected on the output of oscillating circuit, black meter pen ground connection, observes oscillation amplitude, if insufficient amplitude can be adjusted the size of the resistance to earth 105 of the second base stage.
3, adjust radio frequency and modulation operating state:
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 should adjust the sense value of induction regulation coil, or the resistance value of coding ic output, until sensitivity meets the requirements.
4, with common solid size receiver, make receiver, now receiving unit can not be received signal.If with the specific dicode signal receiver of inventor's design, dicode receiver can be received signal.
Claims (3)
1. an induction-regulated radiating circuit, is characterized in that: unijunction transistor oscillating circuit, coding integrated circuit, radio circuit, indicating circuit, control switch form jointly:
Wherein: unijunction transistor oscillating circuit: the first base stage of unijunction transistor connects power supply, the second base stage connects a resistance to ground, the transmitting of unijunction transistor connects one end of adjustable resistance, after another termination fixed resistance of adjustable resistance, receive the positive pole of integrating capacitor, the minus earth of integrating capacitor, integrating resistor is received between power supply and integrating capacitor, and the second base stage of unijunction transistor becomes the output of unijunction transistor oscillating circuit, connects the change code end of coding integrated circuit;
Radio circuit is comprised of copper foil antenna and transmitting tube, frequency modulation inductance, controllable impedance:
Frequency modulation inductance one end in frequency-modulation element links together to connect with the power end of weaving into integrated circuit and after control switch, connects power supply, one end of the other end connection copper foil antenna of frequency modulation inductance, transmitting tube collector electrode is connected to one end of copper foil antenna, transmitting tube base resistance is connected between the base stage and collector electrode of transmitting tube, between the base stage of transmitting tube and emitter, connect a resistance, the emitter of transmitting tube has also connected the other end of modulated resistance, one end of another termination controllable impedance of copper antenna, the other end of controllable impedance connects the collector electrode of transmitting tube, controllable impedance parallel connection a shunt capacitance, the copper foil antenna other end has also connect an electric capacity to the emitter of transmitting tube,
One end of control switch connects battery supply, and the other end of control switch is the power supply of unijunction transistor oscillating circuit, coding integrated circuit, radio circuit, indicating circuit;
Indicating circuit is comprised of protective resistance and indicator light:
One end of protective resistance is connected to the other end of control switch, ground connection after the other end connection indicator light of protective resistance;
The output of coding integrated circuit connects one end of modulated resistance, and the other end of modulated resistance connects the emitter of transmitting tube.
2. a kind of induction-regulated radiating circuit according to claim 1, is characterized in that: the first connection of coding integrated circuit fixed code is to connect power supply, and the second connection of coding integrated circuit fixed code is ground connection.
3. a kind of induction-regulated radiating circuit according to claim 1, is characterized in that: the second base stage resistance to earth of unijunction transistor can be adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420473837.3U CN203984407U (en) | 2014-08-21 | 2014-08-21 | A kind of induction-regulated radiating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420473837.3U CN203984407U (en) | 2014-08-21 | 2014-08-21 | A kind of induction-regulated radiating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984407U true CN203984407U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420473837.3U Expired - Fee Related CN203984407U (en) | 2014-08-21 | 2014-08-21 | A kind of induction-regulated radiating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203984407U (en) |
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2014
- 2014-08-21 CN CN201420473837.3U patent/CN203984407U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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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: 20141203 Termination date: 20150821 |
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| EXPY | Termination of patent right or utility model |