A Thermistor for Measuring Temperature in Bath Water

Instead of using 3 LEDs as a visual output, use a 7 segment display to display the number to inform when a certain temperature is reached. The advantage of this is that you can have more than three indicators, so you can display different numbers depending on the age of the bath. For example, you can wait for a small number to see if it is a baby. The disadvantage of using a 7 segment display as a visual output is that only three LEDs let you do it when the temperature is within that range because you do not need it at the exact temperature as you shower. It is enough to say that it is too hot. It is still too cold.

(A) The digital thermometer determines the temperature by measuring the resistance of a semiconductor device called thermistor (having) at the same temperature as the patient. If the resistance of the thermistor at this temperature is 82.0% of the (normal body temperature) value, how much is the patient's temperature? (B) Negative value

A thermistor can be used as a solid-state device based on resistance functioning with temperature and can be used as a negative temperature coefficient (NTC resistance decreases with increasing temperature) or a positive temperature coefficient (PTC resistance increases with increasing temperature). NTC is the most commonly used type of temperature measurement, the rate of resistance change with temperature is much higher than that of resistance temperature detector and it provides high sensitivity in a narrow temperature range. This makes the thermistor highly suitable

Basically, thermistors are sensitive temperature resistors. Normally, the resistance value of all the resistors varies with temperature, but the relative thermistor shows a more sensitive temperature to the semiconductor material. The resistance of the thermistor decreases as the temperature rises. Changes in resistance as well as resistance change are large. With regard to the temperature sensors described above, very similar various smoke sensors with different parameters and ranges are available on the market. Smoke detectors detect smoke and heavy dust particles in the air. Some smoke sensors, including sensors used in the proposed project, are analyzed in detail below.

Nur Abd Aziz proposed a fire alarm system consisting of three sensors, a thermistor's hearing sensor, an infrared sensor and an infrared smoke sensor. Thermistor thermal sensor is used to detect temperature rise rate and high temperature rate. Infrared sensors are used for intrusion alarms, detect presence or movement, and act as an anti-theft alarm system. Infrared smoke sensors are used to identify early fires and smoldering. When a fire occurs, the sprinkler automatically turns on and the burglar alarm activates. Known fire catalysts are smoke, flames and heat, but only smoke and smoke sensors are applied and highlighted. Furthermore, when a fire occurs, the high sensitivity motion sensor reacts to normal environmental vibration. This may be caused by moving the car over the head of the plane.