In recent years, with the rapid development of the automobile industry, the technical requirements for the interior of the automobile are also increasing. Especially when it comes to the optimization of automotive heat pump systems, precise temperature and pressure monitoring is a key factor in ensuring comfort and energy efficiency. As a "leader" in the field of temperature monitoring, NTC thermistors are gradually applied to integrated combined pressure and temperature sensors, providing the possibility for efficient and reliable temperature control in heat pump systems.

Combined pressure and temperature sensor usually includes sensor housing, pressure sensing component, NTC thermistor, signal processing module, connector, etc. When the NTC obtains the temperature change of the measured medium (such as the airflow in the air conditioning hose of a automobile), its resistance value will also increase/decrease. Subsequently, the signal processing module reads the resistance value of the thermistor and converts it into a temperature signal by algorithms. At the same time, the pressure sensing component will transmit the air pressure data to the signal processing module after monitoring the change of air pressure in the hose. Finally, the temperature and pressure signals are output to the central control of the automobile through the connector, which is used to monitor and control the operation of the heat pump system.

Specifically, NTC thermistor is usually fixed to a bracket and connected to a PCB. When the air flow in the hose passes through the thermistor, the temperature change causes a change of the resistance value, which generates a corresponding electrical signal. This electrical signal is processed and converted into a temperature reading for use in the automotive air conditioning control system. In addition, the temperature of the airflow in the hose can be monitored in real time through the NTC thermistor, and combined with the algorithm in the control system, accurate temperature control of the air conditioning system can be realized. For example, when the temperature exceeds a preset value, the control system can automatically adjust the cooling or heating capacity of the air conditioning system to keep the temperature in the car constant, thereby improving the user's riding experience.

Due to the high temperature of the application scenario of the combined pressure and temperature sensor, the temperature resistance requirements for the NTC thermistor are also higher. EXSENSE Electronics Technology Co., Ltd. recommends the use of VT series automotive NTC thermistor, which:

First, high temperature resistance, able to adapt to the harsh working temperature environment of the combined pressure and temperature sensor;

Second, excellent sensitivity, able to respond quickly when the temperature changes abnormally, and avoid the failure of the heat pump system;

The combined pressure and temperature sensor embedded with NTC thermistor for automobile not only improves the technical problems of precise control of heat pump system in the prior art, but also significantly improves the speed and accuracy of temperature monitoring, and promotes the intelligent development of automobile heat pump system.