How does a thermostat work?

The working principle of the thermostat is to sample and monitor the ambient temperature through the temperature sensor, and then start or stop through the control circuit based on the difference between the set temperature value and the actual detected temperature value. Heating or cooling equipment to maintain the temperature within the set value range. Detailed introduction: 1. Sampling and monitoring of temperature sensor. The temperature sensor is a key component of the thermostat. Its function is to detect the ambient temperature and convert the detected temperature value into an electrical signal, and then pass it to the control circuit for processing. The temperature sensor Generally, thermistors, thermocouples, etc. are used.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

The thermostat is a device that can monitor and control the ambient temperature. Its working principle is to sample and monitor the ambient temperature through a temperature sensor, and then based on the set temperature value and the actual detected The difference between the temperature values ​​is used to start or stop the heating or cooling equipment through the control circuit, so as to maintain the temperature within the set value range.

The main components of the thermostat include temperature sensors, control circuits, actuators and displays. Among them, the temperature sensor is a key component of the thermostat. Its function is to detect the ambient temperature and convert the detected temperature value into an electrical signal, and then pass it to the control circuit for processing. The control circuit controls the actuator to start or stop the heating or cooling equipment based on the difference between the set temperature value and the actual detected temperature value, thereby maintaining the temperature within the set value range. The display is used to display the current ambient temperature and set temperature value.

Specifically, the working principle of the thermostat is as follows:

1. Sampling and monitoring of temperature sensor

The temperature sensor is a key component of the thermostat, and its function It detects the ambient temperature and converts the detected temperature value into an electrical signal, and then passes it to the control circuit for processing. Temperature sensors generally use thermistors, thermocouples or infrared sensors, etc. These sensors can detect and respond to the ambient temperature quickly and accurately.

2. Processing and judgment of the control circuit

The control circuit is the core part of the thermostat. Its function is to process and judge the electrical signal transmitted from the temperature sensor, and based on the settings The difference between the temperature value and the actual detected temperature value is used to start or stop the heating or cooling equipment by controlling the actuator. The control circuit generally uses electronic components such as microprocessors or microcontrollers, which can process and judge temperature signals quickly and accurately.

3. Start or stop of the actuator

The actuator is the output part of the thermostat. Its function is to start or stop the heating or cooling equipment according to the instructions of the control circuit. Actuators generally use electronic components such as relays, solenoid valves or transistors, which can quickly and accurately start or stop heating or cooling equipment.

4. Display and setting of the monitor

The monitor is the input part of the thermostat. Its function is to display the current ambient temperature and set temperature value, and to control the display through the keyboard or remote control. set up. The display generally uses components such as an LCD screen or a digital tube, which can display and set the temperature value intuitively and clearly.

In short, the working principle of the thermostat is mainly to sample and monitor the ambient temperature through the temperature sensor, and then use the control circuit to control the temperature based on the difference between the set temperature value and the actual detected temperature value. Start or stop heating or cooling equipment to maintain the temperature within the set value range. At the same time, the thermostat also has the function of displaying and setting temperature values, and can monitor and control the ambient temperature in real time.

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