CN107422656A - A kind of SCM Based infrared remote control switch design - Google Patents
A kind of SCM Based infrared remote control switch design Download PDFInfo
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- CN107422656A CN107422656A CN201610351329.1A CN201610351329A CN107422656A CN 107422656 A CN107422656 A CN 107422656A CN 201610351329 A CN201610351329 A CN 201610351329A CN 107422656 A CN107422656 A CN 107422656A
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- remote control
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- infrared remote
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25341—Single chip programmable controller
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- Automation & Control Theory (AREA)
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Abstract
Patent of the present invention is related to remote control switch technical field, and in particular to a kind of SCM Based infrared remote control switch design.Invention describes a kind of by infrared remote control power switch of the normal remote control as signal controller, adaptation power supply is carried out to whole control system using USB interface, remote controller signal is received using integrated infrared receiving terminal and decoding process is carried out by single-chip microcomputer STC90C516RD+, and multiple power supplies relay is driven, finally realize the feature control to back-end circuit power switch.The present invention is powered using integrated infrared receiving terminal and USB interface to whole system so that the more simple actual effect of the design circuit and has stronger anti-interference, while maximum decrement is realized to design cost.
Description
Technical field
Patent of the present invention is related to remote control switch technical field, and in particular to a kind of SCM Based infrared remote control switch design.
Background technology
Development and people's living standards continue to improve with electronic technology, increasing electronic product comes into daily life, and these electrical equipment, the overwhelming majority are to use infrared remote control mode, the use of remote control brings great convenience to daily life and production.It is not only safe and reliable using infra-red remote control but also electrical Interference can be effectively isolated under the environment such as high pressure, radiation, toxic gas, dust in industrial equipment.
Infrared remote control does not influence surrounding enviroment, does not disturb electrical equipment；Circuit debugging is simple, typically without any debugging to devote oneself to work as long as errorless by given circuit connection；Encoding and decoding are easy, can carry out Multi-way remote control, are widely used in being closely remotely controlled indoors；And the design of switch is remotely controlled using single-chip microcomputer, there is the advantages that flexible in programming is various, and operation number can arbitrarily be set.At present, in the market general device system uses special remote control coding and decoding integrated circuit, but because function is specifically limited, is suitable only for the application of a certain dedicated electric appliance product, and application is restricted.Present invention design is exactly to apply infrared remote control system These characteristics, realizes the control to variable connector.
Patent of invention content
Patent of the present invention is related to remote control switch technical field, and in particular to a kind of SCM Based infrared remote control switch design.Invention describes a kind of by infrared remote control power switch of the normal remote control as signal controller, adaptation power supply is carried out to whole control system using USB interface, remote controller signal is received using integrated infrared receiving terminal and decoding process is carried out by single-chip microcomputer STC90C516RD+, and multiple power supplies relay is driven, finally realize the feature control to back-end circuit power switch.
The present invention is powered using integrated infrared receiving terminal and USB interface to whole system so that the more simple actual effect of the design circuit and has stronger anti-interference, while maximum decrement is realized to design cost.
Brief description of the drawings
Fig. 1：System framework schematic diagram.
Fig. 2：Infrared remote control system block diagram.
Fig. 3：The finished product remote control key figure that the design uses.
Fig. 4：" 0 " and " 1 " figure of remote control coding.
Fig. 5：Electromagnetic relay schematic internal view.
Embodiment
In order that the object, technical solution and advantage of patent of the present invention are more clearly understood, below in conjunction with drawings and Examples, patent of the present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention patent, is not intended to limit the present invention patent.
Invention describes a kind of by infrared remote control power switch of the normal remote control as signal controller, adaptation power supply is carried out to whole control system using USB interface, remote controller signal is received using integrated infrared receiving terminal and decoding process is carried out by single-chip microcomputer STC90C516RD+, and multiple power supplies relay is driven, finally realize the feature control to back-end circuit power switch.
The present invention is powered using integrated infrared receiving terminal and USB interface to whole system so that the more simple actual effect of the design circuit and has stronger anti-interference, while maximum decrement is realized to design cost.
System framework schematic diagram is as shown in Figure 1,The infrared remote-controlled signal that remote control is sent gives STC90C516RD+ middle fracture 1 after infrared remote receiver PC838 is received and changed into TTL signal,Single-chip microcomputer produces external interrupt after collecting these data,Into decoding program,Infrared decoding processing is carried out to it and is obtained to the control information needed for back-end circuit,These control information can be exported directly from I/O mouths,When I/O output high level is,So that the triode 9013 in the design circuit turns on,Relay coil turns on to form magnetic field,Hold shell fragment,Normally closed disconnection,Normally opened closure,Connect the power supply in back-end circuit,Because the control coil of relay has inductance,Larger back-emf can be produced in the moment of shut-off,Therefore one diode of reverse parallel connection on relay coil is needed,It is not breakdown with protection driving triode,The diode that the design uses is IN4007.Remote-transmitter module：What is be applied in the design is common finished product remote control transmitter, for launching the infrared ray containing key value, is received for infrared receiving terminal.Infrared receiving module：Infrared ray of the remote control transmitting containing key value information is received, by receiving, amplifying, the Transistor-Transistor Logic level signal for being available for single-chip microcomputer to identify is changed into after shaping, and be sent to single-chip microcomputer and decoded by single-chip microcomputer.Single-chip microcomputer decoder module：Single-chip microcomputer carries out decoding process to the Transistor-Transistor Logic level signal that infrared receiving terminal transmission comes, and the key value of remote control is obtained, so as to perform the control function of rearmounted relay circuit.Relay control module：The break-make work of MCU driving relay, so as to realize switch on and off function control to the power supply in back-end circuit.
Such as Fig. 2（Infrared remote control system block diagram）Shown emitting portion includes keyboard matrix, coded modulation, LED infrared transmitters, receiving portion includes opto-electronic conversion amplification, demodulation, decoding circuit, and whole receiving portion will receive head to complete by above-mentioned PC838 infrared integrateds completely, the emitting portion of the design sends control signal using finished product remote control.The radiating circuit of infrared remote control is to send the infrared waves through ovennodulation using infrarede emitting diode, infrared receiving circuit is made up of infrared receiving diode, triode or silicon photocell, the infrared light of infrared transmitter transmitting is converted to corresponding electric signal by them, then send post amplifier.Emitter is typically made up of several parts such as instruction key (or action bars), instruction coding system, modulation circuit, drive circuit, radiating circuits.When pressing instruction key or promoting action bars, instruction encoding circuit produces required instruction encoding signal, and instruction encoding signal is modulated to carrier wave, then outwards launches modulated fixed instruction encoding signal by radiating circuit after carrying out power amplification by drive circuit.Receiving circuit is typically made up of several parts such as receiving circuit, amplifying circuit, modulation circuit, instruction decoding circuit, drive circuit, execution circuit.The brewed encoded command signals that receiving circuit sends transmitter are received, and demodulator circuit is sent after being amplified, and demodulator circuit demodulates brewed instruction encoding signal to come, that is, is reduced to encoded signal.Encoded command signals are entered row decoding by command decoder, finally drive execution circuit to realize the operational control of various instructions by drive circuit.
Remote control transmitter special chip is a lot, here we are with than wide, decoding is relatively easy to one kind to be illustrated, and now illustrates coding principle so that WD6122 remote control transmitters special chip forms radiating circuit as an example, the remote control transmitter finished product key value of the chip type is as shown in Figure 3.After transmitter button is pressed, that is, there is remote control mode to send, different remote control codings are also different pressed key for institute.This remote control mode has following characteristics：Using the serial code of pulsewidth modulation, represented binary " 0 " by the combination of 0.565ms, interval 0.56ms, cycle for 1.125ms of pulsewidth；Represented binary " 1 " by the combination of 0.565ms, interval 1.685ms, cycle for 2.25ms of pulsewidth, its waveform is as shown in Figure 4.
Carrier frequency of 32 binary codes through 38kHz of " 0 " and " 1 " composition carries out secondary modulation to improve emission effciency, reaches the purpose for reducing power supply power consumption.Then infrared ray is produced to spatial emission by infrared-emitting diode again.
Remote control is modulated to infrared ray some frequency after key information is encoded is launched by light emitting diode, infrared receiving tube is demodulated original encoded information after receiving the infrared signal that transmitting tube is sent to the signal, it is serial binary code that infrared remote control, which receives the coding that head demodulates, include remote keying information, but it is also inconvenient for CPU and reads identification, it is therefore desirable to first these binary codes are decoded.When any one button presses for more than 36ms on remote control, the oscillator of control chip activates chip, a specific synchronous harbour will be launched, it is exactly 9ms low level for receiving terminal, with 4.5ms high level, this synchronous harbour can make program know after this synchronous harbour can receive data.The key of decoding is how to identify " 0 " and " 1 ", since the definition of position, we can be found that " 0 ", " 1 " with 0.56ms low level, the difference is that the width of high level is different, " 0 " is 0.56ms, " 1 " is 1.68ms, so " 0 " and " 1 " must be distinguished according to the width of high level.If after 0.56ms low levels, trigger, after 0.56ms, if the level read is low, it is " 0 " to illustrate the position, on the contrary then be " 1 ", for the sake of reliable, delay must be longer than 0.56ms, but no more than 1.12ms, else if the position is " 0 ", that reads has been the high level of next bit, therefore takes（1.12ms+0.56ms）/ 2=0.84ms is the most reliable, typically takes 0.84ms or so.According to the form of infrared coding, program could reading code after the completion of should waiting 9ms initial code and 4.5ms result code.The binary system of decoding gained is stored in corresponding memory cell by single-chip microcomputer, and this completes the IR decoding operations of a certain button, similarly, the infrared decoding of other buttons can be realized by this, eventually form the corresponding key assignments table of remote controller key.The SCM program can identification corresponding function key of remote control like this, corresponding order is sent to single-chip microcomputer by remote control, single-chip microcomputer receives makes the actuating of relay so as to realize the switch of electrical equipment after order by drive circuit.
STC90C516RD+ single-chip microcomputers be a new generation that macrocrystalline science and technology is released it is super/single-chip microcomputer of high speed/low-power consumption, completely compatible traditional 8051 single-chip microcomputer of instruction code, 12 clocks/machine cycle, is internally integrated MAX810 Special reset circuits, in below 12MHz, resetting pin can be directly grounded clock frequency.
The infrared receiving device of infrared receiving circuit integration rolls into one the reception of remote signal, amplification, detection, shaping, and export the TTL signals that single-chip microcomputer can be allowed to identify, this greatly simplifies the design work of the complexity of receiving circuit and circuit, convenient use.Head PC838 is received using infrared integrated in the design, in the case of with small-power transmitting tube transmission signal, it receives distance up to 15m.It can with TTL, COMS circuit compatibility, receive infrared signal frequency be 38 kHz, while signal can be amplified, detection, shaping, obtain the encoded signal of TTL level.Three pins be respectively (GND) ,+5 V power supplys (VCC), demodulated signal output end (connecing single-chip microcomputer external interrupt).Infrared integrated receives the test of head：After a diode and a light emitting diode can be connected between PC838 power end and signal output part, then mix defined working power（For+5V）, when hand takes remote control to press any key against reception head, light emitting diode can flash, and illustrate that infrared receiving terminal and remote control work are all normal；If light emitting diode not flashing, illustrate infrared receiving terminal and remote control at least one damage.As long as ensure that remote control is working properly, it is easy to judge the quality of infrared receiving terminal.
MAX232 chips are the single supply electrical level transferring chips that Maxim designs exclusively for the rs-232 standard serial ports of computer, are powered using+5V single supplies, RS232 interface is asynchronous transmission standard interface, therefore is generally used for the communication within 20m.
The design carries out adaptation power supply using USB interface to whole remote control system, so that the power unit of the design is stable and the maximum simplification to circuit realiration, is more saved for the single-chip microcomputer tradition electric power system to compare, cost is more saved.
Remote control switch is realized, it is necessary to which selective relay coordinates single-chip microcomputer and infrared remote control realizes the function of remote control switch, what the design selected is the electromagnetic relay of 5V rated voltages.What electromagnetic relay was typically made up of iron core, coil, armature, contact reed etc.,（The 5 pin electromagnetic relay internal structures signal of the design application is as shown in Figure 5）As long as adding certain voltage at coil both ends, certain electric current is will pass through in coil, so as to produce galvanomagnetic-effect, armature will overcome the pulling force of return spring to be drawn to iron core in the presence of electromagnetic attracting force, so as to movable contact and stationary contact with moving armature（Normally opened contact）Adhesive.After coil blackout, the suction of electromagnetism also disappears therewith, and armature will return to original position in the reaction force of spring, make movable contact and original stationary contact（Normally-closed contact）Release.So adhesive, release, so as to reach the purpose of conducting in circuit, cut-out.For " normally opened, normally closed " contact of relay, can so distinguish：The stationary contact being off when relay coil is not powered on, it is referred to as " normally opened contact "；Stationary contact in an ON state is referred to as " normally-closed contact ".Relay typically has two strands of circuits, is low-voltage control circuit and high-pressure work circuit.
Design of System Software code is as follows：
#include<reg52.h>
#include<intrins.h>
#include"macroandconst.h"
#include"infr.h"
// infrared decoding program header file state
#include"Control.h"
// Control program header file state
void Inital()
{
IE =
0x84;// allow total interruption to interrupt, enable INT1 external interrupts;
TCON = 0x04;
}
Main()
{
Inital();
P2=0x00;
// driving transistor is high level, so at the beginning will
while(1)
// I/O level drags down;
{
if(PassWord!=0) //PassWord can be directly hereby incorporated defined in working as in the header file of infrared decoding;
{
Relay();// Control program;
}
}
}
Void Exter1 () interrupt 2 // external interrupt programs;
{
IR_IN();// infrared decoding function subprogram calls;
}
Infrared decoding program：
#include<reg52.h>
#include"macroandconst.h"
#include"Delay.h"
// delay procedure header file is stated;
#include"Control.h"
sbit IRIN=P3^3;
uchar IRCOM[7];
uchar PassWord=0;
/ * function names：Infrared decoding program
Function performance：Infrared receiver head output signal is decoded and encode */
void
IR_IN()
// infrared decoding program
{
unsigned char j,k,N=0;
EX1 = 0;// shut-off external interrupt, is simultaneously received again,
delay(15);// cause program chaotic;
If (IRIN==1) // guidance code is started with low level, so must detect at the beginning
{
EX1 =1;// be again turned on external interrupt, reception system code and numeric data code and
return;// data radix-minus-one complement confirms that IR signals occur
}
while (!IRIN) // wait IR to be changed into high level, skip the leading low of 9ms
{ // level signal;
delay(1);
}
while
(IRIN) // wait IR to be changed into low level, skip the leading of 4.5ms
{
// high level signal;
delay(1);
}
for
(j=0;j<4;J++) // collect four groups of data
{
for
(k=0;k<8;K++) // every group of data have 8
{
while (!IRIN) // wait IR to be changed into high level
{
delay(1);
}
While (IRIN) // calculating IR high level durations
{
delay(1);
N++;
if (N>=30) // judge whether time-out
{
EX1=1;
return;
} // 0.14ms countings are long to be left automatically;
} // high level is counted and finished
IRCOM[j]=IRCOM[j] >> 1;// data highest order benefit ", do not connect
if (N>=8) // serial data is received, but according to arteries and veins
The delay of { // punching judges ' 1 ' and ' 0 ';
COM[j] = IRCOM[j] | 0x80;// data highest order mends ' 1 '
}
N=0;
}
}
if (IRCOM[2]!=~ IRCOM [3]) // judge receive data be with its radix-minus-one complement // it is no equal, it is equal, receive again;
EX1=1;
return;
}
PassWord=IRCOM[2];
// key code value received is assigned to variable;
EX1 = 1;
}
Control program：
#include<reg52.h>
#include"macroandconst.h"
Fileinfo is included in // annex 1;
#include"InfR.h"
#include"Delay.h"
sbit Relay_1=P2^0;
sbit Relay_2=P2^1;
sbit Relay_3=P2^2;
sbit Relay_4=P2^3;
//sbit P2_0=P2^0;
/ * function names：Control program
Function performance：Realize to the infrared control * of relay/
void Relay()
{
switch(PassWord)
{
case 0x0c:The key of the key of // remote control 1;
Relay_1=~Relay_1;// realize the low and high levels of I/O mouths
// conversion, controls driving transistor processed
// break-make, so as to control relay folding;
break;
case 0x18:The key of the key of // remote control 2;
Relay_2=~Relay_2;
break;
case 0x5e:The key of the key of // remote control 3;
Relay_3=~Relay_3;
break;
case 0x08:The key of the key of // remote control 4;
Relay_4=~Relay_4;
break;
PassWord=0;Need to reset its value after // complete control program per treatment;
}
}
Related delay procedure used：
#include<intrins.h>
#include"macroandconst.h"
/ * function names：Delay function
Function performance：Realize x*0.14MS delay */
void delay(uchar x)
//x*0.14MS
{
uchar i;
while(x--)
{
for (i = 0; i<13;
i++)
{}} }
The preferred embodiment of patent of the present invention is the foregoing is only, patent, all any modification, equivalent and improvement made within the spirit and principle of patent of the present invention etc. is not intended to limit the invention, should be included within the protection domain of patent of the present invention.
Claims (5)
1. invention describes a kind of by infrared remote control power switch of the normal remote control as signal controller, adaptation power supply is carried out to whole control system using USB interface, remote controller signal is received using integrated infrared receiving terminal and decoding process is carried out by single-chip microcomputer STC90C516RD+, and multiple power supplies relay is driven, finally realize the feature control to back-end circuit power switch.
A kind of 2. SCM Based infrared remote control switch design according to claim 1, it is characterized in that, the STC90C516RD+ single-chip microcomputers of the present invention are the single-chip microcomputers for the ultrahigh-speed and low-power-consumption of new generation that macrocrystalline science and technology is released, completely compatible traditional 8051 single-chip microcomputer of instruction code, 12 clock machine cycles, MAX810 Special reset circuits are internally integrated, in below 12MHz, resetting pin can be directly grounded clock frequency.
3. a kind of SCM Based infrared remote control switch design according to claim 1, it is characterised in that the present invention receives head PC838 using infrared integrated, and in the case of with small-power transmitting tube transmission signal, it receives distance up to 15m.
A kind of 4. SCM Based infrared remote control switch design according to claim 1, it is characterized in that, the MAX232 chips of the present invention are the single supply electrical level transferring chips that Maxim designs exclusively for the rs-232 standard serial ports of computer, powered using+5V single supplies, RS232 interface is asynchronous transmission standard interface, therefore is generally used for the communication within 20m.
A kind of 5. SCM Based infrared remote control switch design according to claim 1, it is characterized in that, the present invention carries out adaptation power supply using USB interface to whole remote control system, so that the power unit of the present invention is stable and the maximum simplification to circuit realiration, more saved for the single-chip microcomputer tradition electric power system to compare, cost is more saved.
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| CN201610351329.1A CN107422656A (en) | 2016-05-24 | 2016-05-24 | A kind of SCM Based infrared remote control switch design |
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|---|---|---|---|
| CN201610351329.1A CN107422656A (en) | 2016-05-24 | 2016-05-24 | A kind of SCM Based infrared remote control switch design |
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|---|---|
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Application publication date: 20171201 |