Circuits of Infra Red Sensor

type='html'>Circuit of Movement detectors


Photodioda as removing the transmitter beam infra red with the pulsation frequency 5KHz, then the pulsation will be reflection by reflector in front of it. and received by the phototransistor as the receiver. The detected object is located between the transmitter-receiver with a reflector.

Circuit on the left is the transmitter modulation circuit that produces infrared 5KHz throbbing. On the right side is the receiver circuit, there is a resonance tuned amplifier. Band width it can control so the receiver circuit can catch the beat of the transmitter modulation 5Khz. Bandwidth control is also working to reduce the sensitivity of the effect of light in the surrounding areas.

simple circuit of infra red remote control

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By using the NE 555 and LM 567we can create a system of remote control via infra red light media. This system works based on the frequency of reading the signal transmitted, so that the frequency of the signal transmitter in the series must be the same as the receiving frequency.

Frequency on the transmitter is determined by the value of R1 and C1 based on the following equation:

infra red remote control Transmitter

As mentioned above, the recipient must also have the same detection frequency with a frequency that transmitted by a circuit of transmitter. Frequency of a circuit of receiver is determined by the following equation:

infra red remote control Reciever

To simplify the process of tunning, R1 on the part of the receiver is a variable resistor. while at the transmitter is still valuable. When the series was ready, so that the system can work well, the first step is to do tunning, with the way the transmitter is turned on continuously, while R1 is set in the value until the recipient can detect the signal transmitter

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Remote Control infra Merah Sederhana

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By using the NE 555 and LM 567, we can make the system infra red remote control. Remote control works based on this reading frequency signal that is sent, so that the transmitter frequency signal must be the same as the receive frequency. Frequency on the remote control transmitter is determined by the value R1 and C1 based on the following equation:

Skema Rangkaian Remote Control Transmitter

As mentioned above, the remote control must have the same frequency with the frequency transmitted by the transmitter chain. Recipient of this frequency range can be determined with the following equation:

Skema Rangkaian penerima Remote Control

To simplify the process of tunning, R1 at the recipient install a remote control in the variable resistor (VR). while the transmitter constant value (resisitor tetep / normal). If a circuit of remote control has been completed on the raft, to know whether a circuit of working well, the first step must be done is make tunning, with the transmitter is turned on continuously, while R1 is set so that the recipient can detect the signal transmitter. If the tuning is successful, the relay recipient akan romote control switch position (nye-Tech), when it has happened means that a circuit of remote control is working well. to the next can try pressing the switch on the remote control at the sender (transmitter). should switch on when the press kutup relay at the remote recipients will move kutup (nye-Tech).

Rangkaian Pendeteksi obyek Dengan Infra Red

type='html'>Infra red (infra red) is the diffraction wavelength elektromagnet more than its visible light is between 700 nm and 1 mm. Infra red rays of light is not visible. If viewed with the light spektroskop the infra red light radiation will be visible on the spectrum elektromagnet with wavelength on the wavelength red light. With this long wave infra red light so it will not appear by the heat radiation, but it still feels embossed / detected.

because the infra red is not visible by naked eye so the idea arose to create a tool pendeteksi movement using infra red this

in the image below is the following circuit diagram of an infrared motion detector that can be used to sense intrusions. Infra red rays reflected from a static object will be in one phase, and the rays reflected from a moving object will be in another phase.The circuit uses this principle to sense the motion.

Skema Rangkaian Pendeteksi obyek Dengan Infra Red

how to work a circuit of Pendeteksi obyek Infra Red
NE 555 is wires as an astable multivibrator . IR diode connected at the output of this IC produces infrared beams of frequency 5Khz. These beams are picked by the photo transistor Q1 . At normal condition ie; when there is no intrusion the output pin (7) of IC2 will be low. When there is an intrusion the phase of the reflected waveforms has a difference in phase and this phase difference will be picked by the IC2. Now the pin 7 of the IC 2 goes high to indicate the intrusion. An LED or a buzzer can be connected at the output of the IC to indicate the intrusion.

Note:

• Comparators IC2a and IC2b are belonging to the same IC2 (LM1458).
• When there is disturbance in the air or vehicles passing nearby, the circuit may get false triggered.
• POT R5 can be used for sensitivity adjustment.

Rangkaian Infra Red Remote Tester

type='html'>Infra Red Remote Tester

The circuit is very effective to test the remote controls what still works or not, the remote record will be tested using infra red. Examples of the TV remote, AC and others. Please try I am sure 100% will be successful.

Rangkaian Remote Tester

The workings of the circuit is very simple, when the infra red sensor receive infrared signals pin 2 sensor will produce a voltage, this voltage will drives the PNP transistor so that the LED lamp and piezo disc (BZ) is active. for the power supply you can use a 9 volt battery and then use IC 7805 or use 1.5 volt batteries x 3

Following the specification of components installed

• Transistor BC557
• TSOP 1738 Sensor Infra Red
• R1 = 10k ohm ¼ watt Resistor
• R2 = 1k ohm ¼ watt Resistor
• R3 = 1k ohm ¼ watt Resistor
• BZ = piezo disc
• led

TSOP 1738 Sensor Infra Red



Features

• Photodetector and preamplifier circuit in the same casing.
• Receives and amplifies the infrared signal without any external component.
• 5 V output (active at level 0).
• 38 kHz integrated oscillator.
• High sensitivity.
• High level of immunity to ambient light.
• Improved shielding against electrical field interference.
• TTL and CMOS compatibility.
• Applications: infrared remote control.

Technical specification

• Supply: 5 V
• Power consumption: 0.4 to 1.0 mA
• Min. Ee irradiation: 0.35 mW/m2 typ.
• Angle of detection: 90
• Dimensions of the casing (mm): 12.5 x 10 x Thickness 5.8
• Temperature range: -25 C to +85 C