Why are Bridge sensors better than Column type sensors

Why are Bridge sensors better than Column type sensors?

Keyword: Bridge sensor, Column type sensor, weight cell sensor

I: The difference between Bridge sensor and Column type sensor

Bridge sensor and Column type sensor are both types of pressure weight cell sensor used to measure the pressure exerted on objects. The biggest difference between the two is the difference in measurement principles.

Column type sensor, also known as column strain gauge sensor, measures the strain generated by the pressure on an object. Its structure is composed of a cylindrical strain gauge component. When an object is subjected to pressure, the strain gauge will undergo physical deformation, which will cause a change in resistance, thereby causing the output terminal of the sensor to output a voltage signal.

Bridge sensor utilize the characteristic of the resistance change of an object under force to achieve measurement through an electric bridge. Connect two equal resistors in series to form a voltage divider, and place a resistor or strain gauge on the pressure point of the object to form another voltage divider. Then, use an amplifier to differentially amplify the output signals of the two voltage dividers to obtain a voltage output proportional to the pressure. Due to the small range of resistance variation,weight cell sensor  it is necessary to adjust the sensitivity of the bridge to a sufficiently high level so that even small resistance changes can be effectively measured.

II: Advantages of  Bridge sensor

1. Higher accuracy

Bridge sensor have high sensitivity and can sense very small changes in resistance, so they have higher measurement accuracy than Column type sensors.

2. Stronger anti-interference ability

Due to the use of differential amplification technology, Bridge sensor have good resistance to environmental interference signals, and can still ensure high measurement accuracy even under the influence of power interference and external magnetic fields.

3. Better stability

Bridge sensor have better stability compared to Column type sensor because they can automatically compensate for the impact of environmental factors such as temperature and power on measurement results, ensuring long-term accuracy stability.

4. More extensive applications

Bridge sensor are widely used in various scientific research and industrial automation fields, such as automobiles, machine tools, engineering machinery, robots, etc., due to their advantages of high precision, high reliability, and strong adaptability.

In summary, Bridge sensor have more advantages compared to Column type sensor and are a type of sensor worth promoting and using in the field of sensors.