Automatic compensation sensor, controller compensates output signal from signal output terminal

摘要

An automatic compensation sensor (Figure 1) eliminates an exclusive input terminal for the compensation mode signal. The device includes a sensor body 1, a signal output terminal 5 for outputting signals from the sensor body and a controller for compensating the output signal from the signal output terminal. Figure 2 is a flow chart illustrating the above operation. The microcomputer 2 checks the digital output terminal 22 during step S1. Then, the microcomputer 2 determines the presence of the compensation signal during step S2. If the compensation signal is properly received, the presence of illegal data is checked during step S3. If there is no illegal data, the microcomputer executes the compensation mode in step S4. The microcomputer 2 then determines the presence of a compensation signal within a specified time in step S5. If no compensation signal is received, or if an illegal signal is received during step S3, it returns to normal operation mode during step S6. This enables the reduction of the probability of erroneous operation of the compensation mode in commercial versions of this product.