▎ 摘　　要

NOVELTY - The hydrogel sensor has a hydrogel as a matrix material. The final sensor is obtained by assembling layers of hydrogels with different conductivity. The thickness range of each layer of hydrogel is 0.5 mm to 1 mm. The number range of the assembled layer is 10 to 20 layers. The total thickness of the sensor is not more than 2 cm. The hydrogel is single-network hydrogel or double-network hydrogel obtained by chemical cross-linking or physical cross-linking. USE - Multilayer assembled piezoresistive hydrogel sensor. ADVANTAGE - The multilayer assembled piezoresistive hydrogel sensor has high sensitivity, enhanced mechanical property, enhanced rehydration performance and controllable sensitivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of multilayer assembled piezoresistive hydrogel sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the multilayer assembled piezoresistive hydrogel sensor.