CN204013489U - A kind of coded transmitter of ring oscillation control - Google Patents
A kind of coded transmitter of ring oscillation control Download PDFInfo
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- CN204013489U CN204013489U CN201420462206.1U CN201420462206U CN204013489U CN 204013489 U CN204013489 U CN 204013489U CN 201420462206 U CN201420462206 U CN 201420462206U CN 204013489 U CN204013489 U CN 204013489U
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Abstract
A kind of coded transmitter of ring oscillation control, belong to communication technique field, coding integrated circuit can be applied in high-end electronic product, thereby reduce the market price of high-end product, and the new measure of one proposing, by control switch, indicating circuit, annular oscillation circuit, bidirectional analog switch circuit, coding integrated circuit, radio circuit forms jointly, one termination battery supply live wire end of control switch, the other end of control switch becomes indicating circuit, annular oscillation circuit, bidirectional analog switch circuit, coding integrated circuit, the power end of radio circuit, the output of annular oscillation circuit connects the control end of bidirectional analog switch circuit, the output of bidirectional analog switch circuit connects the change code end of coding integrated circuit, therefore when control switch is connected, annular oscillation circuit vibrates immediately, the integrated circuit that makes to encode produces and becomes code, promote the character of coding integrated circuit, there is the very high anti-ability of cracking, allow remote control product be popularized widely utilization.
Description
Technical field
Belong to communication technique field.
Background technology
Remote controlled transmitting circuit is widely used, it is far distance controlled technology conventional in electronic product, coding integrated circuit in radiating circuit is the important component part of radiating circuit, although some high-end products have used rolling code, but most products are the forms that has adopted coding always, the reason of coding prevents that other people from cracking exactly, if it is too simple to encode, as whole yards of lines are all 1 or are all 0, just be easy to be cracked by people, if anti-theft product, those security personnel are just performed practically no function, thereby the level of confidentiality of coding is directly connected to the quality of product.With present market, if be thought of as lowly, be exactly the coding that is encoded to three kinds of states so, taking 2262 as representative, this integrated circuit cost is low, making product has very large price advantage, but coding is simple, and level of confidentiality is not high enough, so can not use widely in high-end product, how to use the integrated circuit of encoding cheaply to produce the product of High Security Level degree, allow remote control product use more widely, this is a good problem to study.
Allow ordinary people also use high-end electronic product, this is an important goal of development in science and technology, is also a problem that is worth research.
Summary of the invention
Main purpose of the present utility model is that coding integrated circuit can be applied in high-end electronic product, thereby reduce the market price of high-end product, allow remote control product be popularized widely the new measure of one of using and propose, this measure is to use the coding of tri-state cheaply integrated circuit to produce the product of High Security Level degree, reduce product cost, and with other higher level code integrated circuit combination after, level of confidentiality is higher, it is anti-that to crack ability stronger.
The measure the utility model proposes is:
1, a kind of coded transmitter of ring oscillation control is made up of jointly control switch, indicating circuit, annular oscillation circuit, bidirectional analog switch circuit, coding integrated circuit, radio circuit.
Wherein: a termination battery supply live wire end of control switch, the other end of control switch becomes the power end of indicating circuit, annular oscillation circuit, bidirectional analog switch circuit, coding integrated circuit, radio circuit.
Indicating circuit is made up of protective resistance and indicator light: a termination power end of protective resistance, the other end of protective resistance connects indicator light to ground.
Annular oscillation circuit is made up of gate circuit, commissure electric capacity.
After adjustable resistance of output termination of first gate circuit, connect the input of second gate circuit, the input of the output of second gate circuit and the 3rd gate circuit joins, after the input connection commissure electric capacity of second gate circuit, receive the input of first gate circuit, the output of the 3rd gate circuit becomes the output of annular oscillation circuit, is connected to the input of first gate circuit simultaneously.
The control end of bidirectional analog switch circuit connects the output of annular oscillation circuit, and the output of bidirectional analog switch circuit connects the change code end of coding integrated circuit, the input end grounding of bidirectional analog switch circuit.
The change code end of coding integrated circuit connects the output of bidirectional analog switch circuit, and wherein two bit codes of the fixed code of coding integrated circuit connect power supply, remainder code ground connection.
Radio circuit is made up of radiating circuit and copper foil antenna.
Copper foil antenna is specific English lower case N-shaped, article two, the Copper Foil of vertical parallel top connects with arc Copper Foil kissing, antenna Copper Foil width is 2mm, the Copper Foil length of two vertical parallel in left and right is 30mm, article two, the spacing of vertical parallel Copper Foil is 20mm, and the height that kiss connects the arc Copper Foil of two vertical parallel Copper Foils is 4.5mm.
Radiating circuit: one end of copper foil antenna is input, i.e. power firestreak end, the live wire of coding integrated circuit is connected on power firestreak end.
The output of coding integrated circuit connects one end of modulated resistance, the base stage of another termination modulating tube of modulated resistance, the grounded emitter of modulating tube, modulating tube collector electrode is divided into three tunnels, the first via connects the emitter of vapotron, the second tunnel connects a termination in three terminations of crystal oscillator, and Third Road 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, the termination line input of starting to exchange fire, 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, the fixed code line of starting to exchange fire of coding integrated circuit.
3, the fixed code earth connection of coding integrated circuit.
4, the gate circuit in annular oscillation circuit is not circuit.
This measure is further explained as follows:
When transmitting switches on power, control switch is connected, and annular oscillation circuit starts rapidly, because the change code of coding integrated circuit has terminated in the output of annular oscillation circuit, therefore, coding integrated circuit is no longer the code of fixing, thereby has promoted coefficient of safety.
1, in order to allow measure better implement, designer has aimed at this line design a kind of a kind of annular oscillation circuit being formed by door integrated circuit, the principle of its vibration is: in power on circuitry in a flash, be that control switch is connected, the input of first gate circuit (301 in Fig. 2) is high-order, because of commissure electric capacity (305 in Fig. 2) can not transition in transition reason, will a high position be delivered to rapidly the input of second gate circuit (303 in Fig. 2), thereby make the output of second gate circuit (303 in Fig. 2) for high, the output of the 3rd gate circuit (304 in Fig. 2) is low, thereby the input of first gate circuit (301 in Fig. 2) continues as low and keeps a period of time, within this time, the output of the 3rd gate circuit (304 in Fig. 2) is by commissure electric capacity (305 in Fig. 2) the output charging to first gate circuit (301 in Fig. 2) through adjustable resistance (302 in Fig. 2) again, (because this gate output is low level), after commissure capacitor charging, electric capacity becomes off-position, second gate circuit input becomes low level from a high position, at this moment the state between each gate circuit takes a turn for the worse, state is now that second gate output is for high-order, the 3rd gate output is low level, first gate output is high-order, also because of commissure electric capacity can not transition principle, this state will keep a period of time, the physical process of this period is that the output of first gate circuit can carry out reciprocal charging to commissure electric capacity by mistake adjustable resistance, form the later half cycle of vibration.So principle is carried out the cycle for the second time, and the later cycle.
In foregoing circuit, for the starting of oscillation that makes to vibrate easy, make vibrational stabilization reliable, designer has done following adjustment and has changed, the one, be electrodeless by the commissure capacitor design in circuit, the electric leakage composition that has reduced electric capacity, has improved Q value, and the 2nd, the time constant of vibration is increased to adjustable composition and be beneficial to adjust.Test shows that this circuit and overall circuit work good, and has very strong exploitativeness.
2, in measure 1, annular oscillation 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 annular oscillation circuit.In the time that manual operation is launched, annular oscillation circuit vibration, 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, reach the object of dicode modulate emission.
3, because the frequency agile of annular oscillation circuit is adjustable, completely can the such ideal situation of furnishing in the time producing, within the needed time of operation push-button, (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 annular oscillation circuit and fgs encoder peripheral element and element, formed radio frequency and produced and launch necessary part, the triode that transmitting tube wherein and modulating tube are same type, simple and convenient.
5, be welded with luminous instruction at annular oscillation circuit, its object one is whether not only to find out the situation of circuit in opening, and the more important thing is that this measure is the special transmitting that adopts dicode, thereby in the time of work shape, the indicator light being connected with annular oscillation circuit, in flashing state, can find out that whether its operating conditions is correct fully aware ofly.
6, the generation of radio frequency and modulation adopt the triode of same type simultaneously, have increased the reliability of circuit.
7, the distance of transmitting is that 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, very difficult guarantee meets designing requirement of the present invention, its reason is, general transmitting can Iterim Change position and the distance of transmitting, can receive that signal just could as long as can meet at that time reception.And transmitting of the present invention and receiving position are definite, can not change because of the difference of weather in use procedure temporarily, (can affect like that normal life is breezy is used to), once at bad weather, is just difficult to ensure the performance of product, increases necessary measure so essential.And this transmitting can largely improve sensitivity, be the copper foil antenna of specific a kind of English lower case n shape, article two, the Copper Foil of vertical parallel top connects with arc Copper Foil kissing, antenna Copper Foil width is 2mm, the Copper Foil length of two vertical parallel in left and right is 30mm, article two, the spacing of vertical parallel Copper Foil is 20mm, the height that kiss connects the arc Copper Foil of two vertical parallel Copper Foils is 4.5mm, strict formulation, allow transmitting have better coupling with reception, experimental results show that, being transmitted in like this reduced weather and surrounding environment to a great extent on the impact transmitting.
Enforcement is rear or under the cooperation of the supporting receiver of designer, the present invention has following outstanding advantage to be:
1, reduced the market price of high-end product, promote the character of coding integrated circuit, coding integrated circuit can be applied in high-end electronic product, what send is no longer the solid size being easily cracked, but there is conversion, there is the very high anti-ability of cracking, because rudimentary coding integrated circuit has cheap advantage, so its product has very strong competitiveness.
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, copper foil antenna is applied into by printed panel, strictly formulates on request, does not produce variation in shape, does not affect radio frequency, has adopted the elite of universal design, has promoted transmitting sensitivity.
5, the vibration being formed by ring oscillator, good stability, load capacity is strong, thereby has strengthened the reliable ability of product.
6, 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.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of this measure.
In figure: 1, control switch; 2, protective resistance; 3, indicator light; 4, crystal oscillator; 5, transmitting tube base resistance; 6, shunt capacitance; 7, tunable capacitor; 8, the electric capacity in parallel with tunable capacitor; 9, vapotron; 10, coding integrated circuit; 11, the output of coding integrated circuit; 12, modulated resistance; 13, modulating tube; 15, the fixed code of coding integrated circuit; 17, bidirectional analog switch circuit; 18, the control end of bidirectional analog switch circuit, the i.e. output of annular oscillation circuit; 20, the output of bidirectional analog switch circuit, the change code end of the integrated circuit of encoding; 21, the input of bidirectional analog switch circuit; 22, annular oscillation circuit; 23, copper foil antenna.
Fig. 2 is annular oscillation circuit figure.
In figure: 18, the control end of bidirectional analog switch circuit, the i.e. output of annular oscillation circuit; 01, first gate circuit; 02, adjustable resistance; 03, second gate circuit; 04, the 3rd gate circuit; 05, commissure electric capacity.
concrete embodiment
Fig. 1 and Fig. 2 have represented a kind of concrete embodiment jointly.
Fig. 1 is the complete schematic of measure, and radio circuit, indicating circuit, coding integrated circuit, bidirectional analog switch circuit weld by shown in Fig. 1, and annular oscillation circuit welds as shown in Figure 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, modulation: adjust annular oscillation circuit.
Adjust oscillating unit relevant parameters:
Adjust duration of oscillation: be connected on the output of oscillating circuit with oscillographic red pen, black meter pen ground connection, observation vibration situation, makes it frequency and meets the requirements.If frequency is undesirable, adjusts commissure capacitance size, or adjust gate output connected resistance; If frequency is too fast, two values is increased, otherwise reduce its value.
Adjust radio frequency and modulation operating state:
If make receiver with oscilloscope, be not directly connected with reflector, at this moment, in the time 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.
Make receiver with common solid size 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 (4)
1. the coded transmitter of a ring oscillation control is made up of jointly control switch, indicating circuit, annular oscillation circuit, bidirectional analog switch circuit, coding integrated circuit, radio circuit;
Wherein: a termination battery supply live wire end of control switch, the other end of control switch becomes the power end of indicating circuit, annular oscillation circuit, bidirectional analog switch circuit, coding integrated circuit, radio circuit;
Indicating circuit is made up of protective resistance and indicator light: a termination power end of protective resistance, and the other end of protective resistance connects indicator light to ground;
Annular oscillation circuit is made up of gate circuit, commissure electric capacity;
After adjustable resistance of output termination of first gate circuit, connect the input of second gate circuit, the input of the output of second gate circuit and the 3rd gate circuit joins, after the input connection commissure electric capacity of second gate circuit, receive the input of first gate circuit, the output of the 3rd gate circuit becomes the output of annular oscillation circuit, is connected to the input of first gate circuit simultaneously;
The control end of bidirectional analog switch circuit connects the output of annular oscillation circuit, and the output of bidirectional analog switch circuit connects the change code end of coding integrated circuit, the input end grounding of bidirectional analog switch circuit;
The change code end of coding integrated circuit connects the output of bidirectional analog switch circuit, and wherein two bit codes of the fixed code of coding integrated circuit connect power supply, remainder code ground connection;
Radio circuit is made up of radiating circuit and copper foil antenna;
Copper foil antenna is specific English lower case N-shaped, article two, the Copper Foil of vertical parallel top connects with arc Copper Foil kissing, antenna Copper Foil width is 2mm, the Copper Foil length of two vertical parallel in left and right is 30mm, article two, the spacing of vertical parallel Copper Foil is 20mm, and the height that kiss connects the arc Copper Foil of two vertical parallel Copper Foils is 4.5mm;
Radiating circuit: one end of copper foil antenna is input, i.e. power firestreak end, the live wire of coding integrated circuit is connected on power firestreak end;
The output of coding integrated circuit connects one end of modulated resistance, the base stage of another termination modulating tube of modulated resistance, the grounded emitter of modulating tube, modulating tube collector electrode is divided into three tunnels, the first via connects the emitter of vapotron, the second tunnel connects a termination in three terminations of crystal oscillator, and Third Road 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, the termination line input of starting to exchange fire, 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. the coded transmitter of a kind of ring oscillation control according to claim 1, is characterized in that: the fixed code line of starting to exchange fire of coding integrated circuit.
3. the coded transmitter of a kind of ring oscillation control according to claim 1, is characterized in that: the fixed code earth connection of coding integrated circuit.
4. the coded transmitter of a kind of ring oscillation control according to claim 1, is characterized in that: the gate circuit in annular oscillation circuit is not circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462206.1U CN204013489U (en) | 2014-08-17 | 2014-08-17 | A kind of coded transmitter of ring oscillation control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462206.1U CN204013489U (en) | 2014-08-17 | 2014-08-17 | A kind of coded transmitter of ring oscillation control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204013489U true CN204013489U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420462206.1U Expired - Fee Related CN204013489U (en) | 2014-08-17 | 2014-08-17 | A kind of coded transmitter of ring oscillation control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204013489U (en) |
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2014
- 2014-08-17 CN CN201420462206.1U patent/CN204013489U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160817 |