Circuit Wiring

Hall Effect sensor will produce a voltage proportional to the magnetic field strength received by a Hall effect sensor tersebut.Sensor it only consists of a silicon layer and two electrodes on each side of the silicon. By the time without any influence of the magnetic field then the potential difference between the two electrodes is 0 Volt as an electric current flowing in the middle two electrodes. When there is a magnetic field affecting the sensor is the current that flows will turn close to / away from the side that is affected by magnetic fields. This results in a potential difference between the two electrodes of Hall effect sensors, where the potential difference is proportional to the magnetic field received by the hall effect sensor.

In this sensor already built an amplifier that strengthens the signal from the sensor circuit and produce the output voltage in the middle of the supply voltage. In this sensor if it gets the influence of magnetic field polarity of the north pole it would result in a reduction in the output voltage on the contrary, if there is the influence of magnetic field polarity of the south pole it will result in an increase in the output voltage. This sensor can respond to changes in magnetic field strength from a static magnetic field strength and the strength of the magnetic field varies with frequency up to 20kHz.

UGN3503 hall effect sensor has a wide supply voltage is from 4.5V to 6V to the sensitivity of changes in magnetic field strength up to 23KHz frequency. The core of this system is the sensor UGN3503U. This sensor will produce output voltage 3V in the absence of magnetic field influence on the sensor. Tegagnan output is not strong enough so that it still needed an op amp is used to amplify the signal from the sensor changes UGN3503U.

Humidity Sensors with SHT11. SHT11 Humidity Sensors is a single chip relative humidity and temperature sensors with multi-sensor module that has been calibrated digital output. Section included a polymer capacity as eleman for relative humidity sensors and a ribbon strain used as temperature sensors.

Output of both sensors are combined and connected on 14-bit ADC and a serial interface on a single chip the same. The sensor output signal aimlessly good with a fast response time. SHT11 Humidity Sensor was calibrated at room denagn humidity accurately using as a reference hygrometer. Calibration coefficients have been programmed into the OTP memory. Coefficient will be used to Calibration output from the sensor during the measurement process.

Sensor system used to measure temperature and humidity are SHT11 Humidity Sensors with 5 Volt voltage source and bidirectonal 2-wire communication. This sensor system has a data path that is used for addressing and reading the command data.

Data collection for each measurement is done by giving orders addressing the microcontroller. Foot serial data that is connected with microcontroller provides a command addressing the pin Data SHT11 Humidity Sensors "00,000,101" to measure relative humidity and "00000011" for temperature measurement. SHT11Humidity Sensor provide humidity and temperature output data on data pins alternately in accordance with the given clock microcontrollers for sensor to work. Sensor SHT11 have ADC (Analog to Digital Converter) in it so that the output data is configured SHT11 Humidity Sensors in the form of digital data and requires no external ADC in data processing on the microcontroller. SHT11 Humidity Sensors data retrieval scheme can be seen in the picture below.