POSTURE DETECTION DEVICE

The attitude detection device 510 of this invention comprises: a case 510a having a hexahedral shape; electrodes A1-A6 arranged one on each inner surface of the case 510a; and a conductive fluid 530 accommodated in the case 510a; wherein the electrodes A1-A6 are insulated from one another. It is preferred that the conductive fluid 530 be arranged to assume a state in which it contacts five of the electrodes A1-A6, a state in which it contacts four of the electrodes A1-A6, and a state in which it contacts three of the electrodes A1-A6.