The working principle of load cell is mainly piezoresistive, capacitive and electromagnetic. Among them, piezoresistive load cell is the most common one. It changes the resistance value inside the sensor by placing an object on the sensor and subjecting the sensor to pressure. By measuring the change in resistance value, the weight of the object can be calculated. Capacitive load cells, on the other hand, utilize the mass of the object to change the capacitance value of the sensor, thereby measuring the weight of the object. Electromagnetic load cells use the mass of the object to change the inductance of the sensor to measure the weight of the object.
The load cell is characterized by high accuracy, good stability and fast response time. It can measure weight ranging from a few grams to several tons, which can meet the needs of different scenarios. At the same time, the load cell can also be connected with computers, PLC and other equipment to realize automated control and data acquisition.
In industrial production, load cell is widely used in material distribution, assembly line weighing, packaging weighing and so on. It can help enterprises realize automated production and improve production efficiency and quality. In commercial transactions, load cells are used in pricing scales and electronic scales in supermarkets, markets and other places to ensure fair and accurate transactions. In medical equipment, load cells are used in hospital beds, wheelchairs and other equipment to help healthcare professionals monitor patients' weight changes. In transportation, load cells are used in trucks, trains and other vehicles to detect the vehicle's load and ensure traffic safety.
In short, load cell is an important measuring device that is widely used in various fields. It helps people realize automation control, data collection and transaction measurement by measuring the weight of objects, improving productivity and quality, ensuring fair and accurate transactions, and guaranteeing traffic safety.