| 摘要 |
PROBLEM TO BE SOLVED: To surely transmit information to a handicapped person in simple configuration by forming a right coil sensor, which is equipped with a right winding coil, on one holder of a magnetic displacement sensor and a left coil sensor, which is equipped with a left winding coil, on the other holder respectively. SOLUTION: A magnetic displacement sensor 1 is made of a synthetic resin and provided with a pair of left and right holders 2a composed of columnar rods 2a1 and disk-shaped flanges 2a2. On the rod 2a1 of the right side holder 2a, a right side coil sensor 3 is formed by winding a copper wire coil in a clockwise watched from the upside. On the left side holder 2a, a left side coil sensor 4 is formed by winding the coil in a counterclockwise. The left and right coil sensors 3 and 4 are formed in parallel inside a case 5 while connecting the upper ends of their copper wire coils. Then, the other end parts of copper wire coils are connected to an amplifier, noise is cut by a filter and generated voltages are compared by a comparator. Then, the result is processed by a voice synthesizer circuit and outputted from a loudspeaker. |
