Suitable for Cummins oil pressure switch sensor and 2897691

The automatic adjustment of parameters such as the threshold of sensing level of various sensors such as photoelectric sensors is carried out in each sensor. However, in the same environment as the production site, such as the periphery of production equipment, the same production line, and the demarcated area in the workshop, a plurality of sensors of the same product model are usually configured for use in consideration of the unification of spare parts and usage methods and the cost advantage of price reduction due to large purchases.

When a plurality of sensors of the same kind are used in the same environment, and the parameters are automatically adjusted for each sensor, the causes and timing of parameter adjustment are not fed back to the system including the sensor network. Therefore, even if the parameter is adjusted for a certain sensor, the adjustment content of the parameter cannot be reflected to other sensors, resulting in an inefficient part. In addition, because the history of parameter adjustment is not kept, it can not help to find out and analyze the problems caused by production equipment and surrounding environment. This patent technology is put forward in view of the above situation, and its purpose is to obtain a control method of sensor system, which can prevent the frequent stop of production equipment due to the detection of foreign objects and contribute to the improvement of the operation rate of production equipment and the reduction of maintenance man-hours. In order to solve the above problems and achieve the purpose, the patent technology is a control method of a sensor system, which has a plurality of sensors that obtain physical quantities corresponding to the existence of the detected objects, and the sensor system judges whether the detected objects exist or not based on the sensing level obtained by multiplying the gain parameters with the physical quantities, and the control method of the sensor system is characterized in that under the condition that no workpiece exists in the detection range of any one of the plurality of sensors.