Easy to manage with your own hands. Single-channel infrared treatment. Description of the robotic system of remote care on the ICH exchange

At the used radio-electronic equipment, a wide range of integral receivers of infra-red vibrance was installed. Otherwise, they are also called IC modules.

You can show it in any electronic device, you can use it with an additional remote control remote care.

The axis, for example, is an IF-receiver on the other board of the TV set.

Irrespective of the simplicity of this electronic component, what is needed is a special integrated circuit, recognized for receiving an infrared signal from a remote control panel (DU). As a rule, ІЧ-priymach can be not less than 3 vysnovkіv. One visnovok є zagalnym that connects to minus «-» eating ( GND), іnshy serve as a plus «+» Visnovkom ( Vs), and the third output to the signal ( out).

At the sight of a high-frequency infrared photodiode, an IF receiver can receive and process an infrared signal, which is an IF-pulse of a fixed frequency and a singing trivality - a pack of impulses. Tse technological solutions allow for low-frequency applications, as they can be overcome by background changes and shifts from the side of other devices, which can be used in the infra-red range.

For example, strong switches for receiving ІЧ-signals can be combined with fluorescent lighting lamps with electronic ballast. I realized that you can’t use an IC-receiver instead of a great IC-photodiode, even if the IC-module is a specialized microcircuit, sharpened for the needs of the receiver.

In order to understand the principle of operation of the IC-module, let's examine it in more detail in this annex for an additional structural diagram.

Microchip for receiving IC-vippromination includes:

PIN photodiode

Regulations pidsiluvach

Bandpass filter

Amplitude detector

Integrated filter

Threshold attachment

PIN photodiode– the type of photodiode, which has between regions nі p the region was ripped out of the damp napkin ( i-area ). The area of ​​​​your napіvprovіdnik - tse really prosharok from a clean navіvprovіdnik without adding to the new house. The very ball and nada PIN-diod yogo especially domineering. Before speech, PIN-diodes (not photodiodes) are actively occupied in low-frequency electronics. Take a look at your mobile phone, the PIN diode is also vicorated.

Let's turn to the PIN-photodiode. In a prime location, the strum does not flow through the PIN-photodiode, as in the circuit of switching on the gate directly (for the so-called gate switch). Oskіlki pіd dієyu zvnіshny іnfrachervonogo vіpromіnyuvannya v i-regions vinikayut electronic-dirkovі bet, then as a result, through the diode, the strum starts to flow. Tsey strum then transforms into a strain and walks on regulations.

Gave a signal from a regulated pilot to go to smug filter. Vіn є zahistom vіd pereshkod. Smuzhny filter for adjustments to the same frequency. So, in ІЧ-priemachs, mainly smug filters are used, tuned to a frequency of 30; 33; 36; 36.7; 38; 40; 56 and 455 kilohertz. In order for the signal to be vibrated by the remote control remote control, the signal was instantly accepted by the IC receiver, it is due to modulation with the same frequency, to the acknowledgment of the smug filter of the IC receiver. The axis is so, for example, looking at the modulation signal from the infrared diode, which is visible (div. little ones).

And the axis looks like this at the output of the IF receiver.

Warto means that the vibrancy of the smug filter is small. Therefore, an IC module with a 30 kilohertz filter can receive a signal with a frequency of 36.7 kilohertz and more. True, with the help of which you see a superior receptionist, it will noticeably decrease.

After that, as a signal passes through the dark-skinned filter, the wine is on amplitude detectorі integrating filter. The integrating filter is necessary to suppress short single bursts in the signal, which can be caused by overshoots. Gave a signal to come to threshold attachment, and then on output transistor.

For stable operation, the coefficient of strength of the regulated force is controlled by the system of automatic regulation of the force ( AGC). Oskіlki korisny signal є pack іpulsіv singing trivality, then through the inertia of the AGC the signal can pass through the tract of strengthening and other nodes of the circuit.

If the frequency of a burst of impulses is over the world, the AGC system works, and the receiver stops receiving the signal. This situation can be blamed if the IC receiver of illuminations fluorescent lamp with electronic ballast, which works at frequencies of 30 - 50 kilohertz. In such a way, infrachervone vippromination of mercury vapor, lamps can pass through the dark-colored filter of the photodetector and the need for AGC. Zvichayno, with whom the sensitivity of the ІЧ-priymach falls.

That doesn’t wonder if the photo receiver of the TV is badly receiving commands from the remote control panel. Possibly, youmu just cares about the illumination of fluorescent lamps.

Automatic threshold adjustment ( ARP) vikonuє similar function, like AGC, keruyuchi threshold device threshold device. ARP sets the response threshold level in such a way as to change the number of low pulses at the module output. For the presence of the core signal, the number of milk pulses can reach 15 times.

The shape of the IC-module case focuses the vibration, which is received, on the sensitive surface of the photodiode. The material of the body passes the vibration with long winds from 830 to 1100 nm. In this rank, the implementation of the optical filter. An electrostatic screen has been installed near the module for protection of the elements from the intake of the incoming electric water. The photo shows the IC modules of the brand HS0038A2і TSOP2236. For por_vnyannya order to display zvichaynі ІCh-photodiodes KDF-111Vі FD-265.

IC receivers

How to check the correctness of the IC receiver?

If you receive IC signals with a special microcircuit, then in order to reliably check this accuracy, you need to apply a voltage to the microcircuit. For example, the nominal voltage for "high-voltage" IC-modules of the TSOP22 series becomes 5 volts. Set the strum to a few milliamps (0.4 - 1.5 mA). When connected to the varto module, secure the base.

At the station, if a signal is not sent to the receiver, and also at pauses between packs of impulses, the voltage on the same output (without voltage) is practically higher. The output voltage between the ground output (GND) and the output signal can be measured with the help of a digital multimeter. You can also freeze the alarm with the strum module. If the strum is changed to a typical one, then, for all intents and purposes, the module is faulty.

Read about those how to reverse the accuracy of the IC receiver for the help of the living block, the multimeter and the remote control panel.

Like Bachimo, the receivers of IC-signals, which are victorious in systems of remote control of an infrared channel, can achieve thinning of attachments. These photo receivers often win at their self-contained outbuildings by amateurs of microcontroller technology.

The photo shows all the elements that we need to fold the scheme.

Principal scheme of receiving IC control of one transistor:

Let's get to the preparation of the photo primer. Yogo scheme was taken from one doc. On the back of the head, draw the board with a permanent marker. But you can work on hanging installation, but you can work on textolites. My board looks like this:

Well, now, obviously, let's get down to soldering the elements. Solder transistor:

Solder a resistor of 1 kΩ (Kilohm) and a useful resistor.

I decided to solder the remaining element - the same resistor for 300 - 500 Ohms, I put 300 Ohms. Razmіstiv yogo zі zvorotnogo bok pay, because I’m guilty of not allowing you to take yoga from the front side, through your mutation paws =)

We clean everything on the right with a toothbrush and alcohol to remove excess rosin. Everything is selected without pardons and a reference photodiode - charge it right away. The video of this construction can be viewed below:

On the video, the distance is small, for those who needed to marvel at the camera and at the remote control at the same time. Tom could not focus the direct control of the remote control. As a replacement for the photodiode, put a photoresistor, then it will react to the light, it will be especially distorted, the sensitivity will be better, lower original schemes photoresistor. Having applied 12v to the circuit, it works normally - the light diode burns brightly, the brightness and sensitivity of the photoresistor are regulated. In this hour, I’m picking up the elements for the circuit so that I can live the IC-receiver at 220 volts, and I’ll turn on the light bulb tezh buv 220V. Thank you for this diagram, thank you: thehunteronghosts . Pressure material:

The MPC of a video recorder, TV set, music center or satellite receiver can be blocked for the mic and the inclusion of various auxiliary electrical appliances, including lighting.

For whom we need help with distance care with our own hands, the scheme of which is shown in this article.

Description of the robotic system of remote care on the ICH exchange

For remote curing, the offensive mechanism is fixed with accessories. Press on the remote control and trim the button for 1 second. On non-trival pressure (for example, at the hour of cherubanya by the music center), the system does not work.

In order to turn off the TV's turn on to the connection with the accessories, it is necessary to select the buttons on the remote control, so as not to freeze, or to stop the remote from the plugged-in device at the right time.

The principle scheme of the remote control is shown in small 1. A special microcircuit DA1 sends and forms the electric signal of the photodiode BL1 of the electric pulse. On the radio elements DD1.1 and DD1.2 impulse comparator, and on the radio elements DD1.3, DD1.4 - a pulse generator.

Control system station (increased or reduced navantazhennya) control trigger DD2.1. If this trigger beam 1 is directly output, the oscillator will operate at a frequency of approximately 1 kHz. On the emitters of transistors VT1 and VT2, there are pulses, yak krіz єmnіst C10 to control the circuit of the triac VS1. Vіn bude v_dmikatisya on the cob dermal nap_vіv_odu prugi.

At the post position on contact 7 of the DA1 microcircuit, there is a log 1, the memory C5 is charged with a crucible support R1, R2 and at the input H of the trigger DD2.1 log 0. In this case, the BL1 photodiode will receive signals and capacity C5 is charged by a short diode VD1 and opir R2.

If the potential of C5 drops to the lower level of the comparator (in 1 second or more), the comparator will short-circuit and on the input of the trigger DD2.1 there is a signal. Trigger mill DD2.1 will change. So it is necessary to switch between adjustments from one stand to the next.

Microcircuits DD1 and DD2 can be vicorated similar to those from the K564, K176 series. VD2 - a zener diode for a voltage of 8-9 volts and a stream more than 35 mA. Diodes VD3 and VD4 - KD102B or similar. Oxide capacities - K50-35; C2, C4, C6, C7 - K10-17; C9, C10 - K73-16 or K73-17.

Adjustment of the system of remote care and change

Polegaє at the pickup support R2 of such a value, so that the transition was made after 1 ... 2 s. If you increase the value of this support until the capacity of C5 is not discharged to the threshold voltage, it is necessary to increase the capacity of C5 and re-adjust.

Mistk_st C6 should be put in that vein, as if the front of the impulse is trivial, which goes from the comparator to the trigger, it will be supernaturally great and the wines will be unstable.

Even though the remote control does not allow to switch with an attachment without switching the TV, you can choose a self-contained remote control, which is a generator rectangular signals with a frequency of 20 ... 40 kHz, which functions on a vibrating IC diode. Options for a similar remote control on the timer KR1006ВІ1 (

Priymach ІЧ - commands of the remote control panel for keruvannya by-butovy technology It can be easily broken by stopping the tenth counter CD4017, the NE555 timer and the TSOP1738 infrared receiver.

Vykoristovuyuchi tsyu scheme ІH priymach, you can easily use your own bit-by-bit technology for an additional remote control for a TV, a DVD player, or for an additional scheme for the remote control described in the article.

Scheme of IC receiver for remote treatment

Whiskers 1 and 2 IR-Priymach TSOP1738 wink for life. Resistor R1 and capacitor C1 are designed for stable operation and suppression of various voltage fluctuations.

If an IF change at a frequency of 38 kHz falls on the TSOP1738 IF receiver, a low voltage level will appear on this output, and a high voltage level will appear again when an IR change occurs. This negative pulse is energized by transistor Q1, which transmits a stronger frequency signal to the input of the 10th counter CD4017. Vesnovki lichilnik 16 and 8 are recognized for living yoga. Visnovok 13 connections to the ground, allowing the same robot.

Switch off Q2 (pin 4) before switching off (pin 15) to start the CD4017 robot in the mode of a stabile multivibrator. At the first hour of the first pulse, Q0 is logged 1, another clock signal is clicked when log 1 appears on Q1 (Q0 becomes low), and then the third signal is again logged to Q0 log 1 (Q2 is connected to MR, so the third clock signal is thrown off by the meter).

Let's admit, the lichilnik zdijsniv skidannya (Q0 high rіven, іnshі w low). When pressing on the button on the remote control, the clock signal is injected into the lichnik, which should be triggered until a high level appears on Q1. In this way, LED D1 lights up, transistor Q2 turns on and the relay is activated.

If I press the MPC button again, log 1 is displayed on Q0, the relay turns on and LED D2 is switched off. LED D1 indicates when the attachment is enabled and LED D2 indicates when the attachment is disabled.

You can win your TV remote control for keruvannya, or pick up the money for the scheme below.

Hovered lower important schemes and articles on the subject of "ІК change" on the site of radioelectronics and radiohob site.

What is "ICH change" and de ce zastosovuetsya, the principles of the scheme of self-contained outbuildings like the term "ICH change".