In intelligent manufacturing systems, tension and compression sensors, as key components for force sensing, provide real-time force feedback to industrial equipment by accurately measuring one-dimensional linear force signals. Their technological evolution not only drives the digital transformation of traditional machinery manufacturing but also establishes the core architecture of force control closed-loop systems in emerging fields.
These sensors operate based on resistance strain gauge measurement technology, with their core components consisting of an elastic sensing element and a strain measurement circuit. The elastomer is precision-machined into a specific geometric shape, commonly including S-shaped, spoke-shaped, and columnar structures. When an external force is applied to the elastomer, its surface experiences micro-strain. The resistance strain gauges attached to the surface convert this deformation into a change in resistance, which is then converted into a voltage signal output via a Wheatstone bridge circuit. This process requires the elastomer material to possess high strength and low hysteresis characteristics; aerospace-grade aluminum alloys or alloy steels are typically selected, and internal stresses are eliminated through aging treatment.
Innovative structural design is a key path to improving sensor performance. Xinjingcheng Sensors' miniature S-shaped tension/compression sensor employs a seamless, integral structure. Through finite element analysis, stress distribution is optimized, controlling nonlinear errors to within 0.03%. In heavy-duty applications, the spoke-type structure, by increasing the effective force-bearing area, enables force measurement up to 500 tons. Its unique hollow design also provides resistance to lateral force interference. The application of a new ceramic coating technology ensures the sensor maintains long-term stability in high-temperature and high-humidity environments.
The expansion of application scenarios is driving the iteration of sensor technology. In new energy battery production, tension and compression sensors are used for tension control during electrode rolling to ensure material uniformity; in the automotive manufacturing field, pressure monitoring systems for body welding integrate high-precision sensors to achieve online detection of welding quality. A certain intelligent warehousing system deploys column sensors to monitor the load-bearing status of shelves in real time, and combines AI algorithms to predict structural fatigue life, thereby improving the safety factor of warehousing.
With the deepening development of the Industrial Internet, tensile and compressive sensors are rapidly upgrading towards intelligence. Sensors integrating digital transmitter modules can achieve temperature compensation and linear correction, and support industrial bus protocols such as Modbus/Profibus. In the field of collaborative robots, the combination of miniature tensile and compressive sensors and force control algorithms enables robotic arms to have compliant operation capabilities, allowing them to complete the precision assembly of 3C products. Xinjingcheng's intelligent sensors have built-in edge computing units, enabling real-time data processing and fault early warning, meeting the equipment status monitoring needs of Industry 4.0.
In future industrial systems, tensile and compressive sensors will continue to play a core role in force sensing. Through the integration of material innovation, structural optimization, and intelligent algorithms, these fundamental devices are evolving from single measurement tools into multi-dimensional sensing terminals, providing a solid foundation for force control in industrial intelligence.
