| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of a conventional sensor for detecting in which when sensitivity of the sensor is raised in order to surely detect eating of a bait by a fish, an error action detecting the vibration which occurs by stream of wind and water and sending out signals also when a fishing rod is vibrated by stream of wind and water occurs frequently and when the sensitivity of the sensor is lowered in order to avoid the error action, the sensor does not act on the strike of the fish and the sensor does not become a state widely put to practical use. SOLUTION: This device for detecting microvibration of strike of fishes is composed of a rod-like electroconductive first spring pendulum whose one end is fixed, a rod-like second spring pendulum in which a weight is provided at the top of the fixed one end, a spring pendulum-retaining part for retaining stationary parts of the first spring pendulum and the second spring pendulum so that rod-like parts of the first spring pendulum and the second spring pendulum are parallel and does not impair free movement in a state in which the weight of the top of the second spring pendulum and the top of the first spring pendulum have a prescribed interval, a contact state-detecting circuit connected to the first spring pendulum and the second spring pendulum and detecting the contact state and a vibration display element driven by output signal of the contact state detecting circuit. The device is realized to solve the conventional problems.
|
