| 摘要 |
A capacitance type sensor good in operability and less in erroneous operation is provided. Switches SW1 to SW4 are formed between a displacement electrode 40 and switch electrodes E11 to E14 kept at a predetermined potential and grounded switch electrodes E15 to E18. Switches SW 11 to SW 14 and SW51 to SW55 are connected to respective capacitance electrodes E1 to E4 that cooperate with the displacement electrode 40 to form capacitance elements. A decision circuit judges states of the switches SW1 to SW4. When at least one of the switches SW1 to SW4 is off, an X-axial output is calculated based on the capacitance values of the capacitance elements C1 and C2, and a Y-axial output is calculated based on the capacitance values of the capacitance elements C3 and C4. When any of the switches SW1 to SW4 is on, a Z-axial output is calculated based on the sum of the capacitance values of the capacitance elements C1 to C4.
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