Abstract: A smart mat includes a stepping potential generation unit, a computing processor and a transmission processor for sensing the stepping direction of a stepper to control the operation of a device. The stepping potential generation unit includes an upper mat, an isolating airgap layer, a lower mat and at least one high-resistance strips. When the stepper stands on the smart mat to press the stepping potential generation unit, a part of the stepping potential generation unit is pressed by an open-circuit state to form a closed circuit and generate a potential. The computing processor uses the distributed position of each potential and the time sequence of distributing each potential to compute and analyse a potential stepping process distribution area to obtain a stepping direction, so as to control the operation of the device through the transmission processor.

Abstract: A smart mat includes a stepping potential generation unit, a computing processor and a transmission processor for sensing the stepping direction of a stepper to control the operation of a device. The stepping potential generation unit includes an upper mat, an isolating airgap layer, a lower mat and at least one high-resistance strips. When the stepper stands on the smart mat to press the stepping potential generation unit, a part of the stepping potential generation unit is pressed by an open-circuit state to form a closed circuit and generate a potential. The computing processor uses the distributed position of each potential and the time sequence of distributing each potential to compute and analyse a potential stepping process distribution area to obtain a stepping direction, so as to control the operation of the device through the transmission processor.

Abstract: A gas detector gas that fuse both the function of an oxygen sensor and the function of a lean air fuel ratio sensor, includes a cover layer, a gas diffusion resistance layer, a buffer, a partitioning layer, a solid electrolyte layer, an air passage layer, and a heating layer stacked in sequence. First and second electrodes are respectively provided on opposite first and second surfaces of the solid electrolyte layer. The partitioning layer includes a slot facing the gas diffusion resistance layer and the first electrode. The air passage layer includes an air passage accessible to the second electrode. The buffer is received in the slot of the partitioning layer. The gas diffusion resistance layer includes outer edges exposed to exhaust gas to be tested. The exhaust gas to be tested enters the gas detector via the outer edges of the gas diffusion resistance layer and reaches a surface of the first electrode of the solid electrolyte layer via the buffer.