1167 dht11 humidity and temperature sensor library for proteus 8

Some of the sensors which can be used as an alternative to DHT11 sensor are DHT22, AM2302, SHT71. It’s compact size and sampling rate made this sensor popular among hobbyists.

Offices, cars, museums, greenhouses and industries use this sensor for measuring humidity values and as a safety measure. The humidity sensor is used as a preventive measure in homes where people are affected by humidity. Weather stations also use these sensors to predict weather conditions. This sensor is used in various applications such as measuring humidity and temperature values in heating, ventilation and air conditioning systems. A pull-up resistor of 5k to 10k ohms is provided for communication between sensor and micro-controller. DHT11 SensorĭHT11 sensor has four pins- VCC, GND, Data Pin and a not connected pin. The maximum current used while measuring is 2.5mA. DHT11 is small in size with operating voltage from 3 to 5 volts. It integrates a thermistor and a capacitive humidity sensor.

Humidity range of this sensor is from 20 to 80% with 5% accuracy. The DHT11 temperature sensor range: 0 50☌ (☒☌) and DHT11 humidity sensor range: 20-80 (±5). The temperature range of DHT11 is from 0 to 50 degree Celsius with a 2-degree accuracy. To get larger resistance value even for the smallest change in temperature, this sensor is usually made up of semiconductor ceramics or polymers. The IC measure, process this changed resistance values and change them into digital form.įor measuring temperature this sensor uses a Negative Temperature coefficient thermistor, which causes a decrease in its resistance value with increase in temperature. Change in the capacitance value occurs with the change in humidity levels. The humidity sensing capacitor has two electrodes with a moisture holding substrate as a dielectric between them. The data of the DHT11 sensor is connected to the digital input / analog pin (A0 to A5) of The Pin Arduino.DHT11 sensor consists of a capacitive humidity sensing element and a thermistor for sensing temperature. Power pins with VCC and GND are connected to 5V and GND terminals of Proteus Tools respectively.

No more than 1 Hz sampling rate (once every second)ĭHT11 sensor has three pins in total, two of which have two power pins, one is a data pin (middle pin).

Good for 0-50☌ temperature readings ☒☌ accuracy.

Good for 20-80% humidity readings with 5% accuracy.

2.5mA max current use during conversion (while requesting data).

At 100% RH, condensation occurs, and at 0% RH, the air is completely dry. Relative humidity (RH) is the ratio between the actual amount of water vapor present in the air and the maximum amount of water vapor that the air can hold at a given is expressed as a percentage.

1167 dht11 humidity and temperature sensor library for proteus 8