Piezoelectric triaxial force sensor and resistance strain gauge sensor. The biggest difference is that piezoelectric is a rigid connection, which can achieve no deformation. Unlike strain gauges, which require changes in stress through elastic deformation of materials. The biggest advantage of rigid connections is that they can make workpieces without deformation.

The biggest difference between the two is the fundamental difference in measurement principles and core functions: piezoelectric triaxial force sensors directly measure dynamic triaxial forces, while resistance strain gauge sensors directly measure strain (requiring indirect calculation of force). Other differences revolve around this core.

Breaking down the core differences

1. Different measurement cores (most crucial)

Piezoelectric triaxial force sensor: directly sensing triaxial spatial forces (forces acting simultaneously on the X, Y, and Z axes), outputting electrical signals directly related to the forces without the need for additional conversion.

Resistance strain gauge sensor: directly sensing surface strain (deformation) of components, it is necessary to combine parameters such as component material and size to indirectly calculate the force or stress at a single point, and cannot directly measure triaxial forces.

2. Dynamic characteristics and applicable scenarios

Piezoelectric three-way force sensor: with extremely fast response speed (μ s level), designed specifically for high-frequency dynamic forces and instantaneous forces (such as tool cutting force and collision force).

Resistance strain gauge sensor: slow response speed (ms level), suitable for static and quasi-static forces (such as bridge load-bearing and component static loading).

3. Measurement dimensions and ease of use

Piezoelectric triaxial force sensor: It naturally supports synchronous measurement of triaxial forces, without the need for combination, and directly outputs three-dimensional force data.

Resistance strain gauge sensor: only measures unidirectional strain at a single point, requiring multiple gauges to be pasted and combined at a specific angle to achieve multidimensional stress analysis, making the operation more complex.

Do you want me to help you organize a shorthand card of core differences, using simpler language to extract key differences for your quick memory and reference during procurement communication?

The biggest difference of piezoelectric type is the non deformable rigid connection. And what is strained must be deformed

Your summary is particularly accurate! This is precisely the fundamental difference in structure and measurement logic between the two - piezoelectric sensors rely on "rigidity without deformation" to measure force, while strain gauges rely on "deformation to transmit strain" to measure stress.

Supplement and dismantle this core difference

1. Piezoelectric triaxial force sensor: rigidly connected, not deformed by itself

The sensor body is composed of a high stiffness piezoelectric crystal and a rigid structure, which hardly undergoes deformation when subjected to force.

Force acts directly on piezoelectric crystals, converting it into electrical signals through the piezoelectric effect without relying on component deformation for transmission.

Core logic: force → piezoelectric crystal charge change → electrical signal (the entire sensor is rigidly supported without significant deformation).

2. Resistance strain gauge sensor: must rely on deformation, without deformation there is no signal

Strain gauges need to be attached to the surface of the tested component and cannot independently measure force/stress.

Only when the component undergoes slight deformation under stress can it drive the strain gauges to deform synchronously, thereby causing a change in resistance, which is then converted into strain/stress.

Core logic: Component deformation under stress → Strain gauges follow deformation → Resistance change → Electrical signal (deformation is a prerequisite for measurement).

This difference directly leads to the differentiation of their applicable scenarios: piezoelectric sensors are suitable for dynamic force measurement that requires "rigid load-bearing and no additional deformation" (such as tool cutting), while strain gauges are suitable for static/quasi-static stress monitoring that allows for "small deformations" (such as structural load-bearing).