Time measuring system for swimming competitions
阅读：37发布：2024-01-08
专利汇可以提供Time measuring system for swimming competitions专利检索，专利查询，专利分析的服务。并且A time measuring system for swimming competitions, wherein a plate is attached to the wall of the swimming pool and electrical control signals for a time counter are produced when the plate is touched by a competitor. The control signals are produced by contact-free transducers such as piezo-electric, electromagnetic or electrodynamic transducers of high sensitivity and reliability.，下面是Time measuring system for swimming competitions专利的具体信息内容。
1. A time measuring system for swimming competitions, comprising a plate to be attached to a wall of a swimming pool, means for producing an electric signal upon touching of said plate, a time counter adapted to be controlled by said signal, at least one contact-free electromechanical transducer operable for producing said electric signal upon touching of the plate, said transducer having feeler means and said plate engaging without clearance between said feeler means and an elastic supporting portion.
2. A system according to claim 1, comprising at least one active transducer such as a piezo-electric, electromagnetic or electrodynamic transducer.
3. A time measuring system for swimming competitions, comprising a plate to be attached to a wall of a swimming pool, means for producing an electric signal upon touching of said plate, a time counter adapted to be controlled by said signal, at least one contact-free electro-mechanical transducer operable for producing said electric signal upon touching of the plate, wherein said plate is substantially stiff and is supported by a plurality of supports, said transducers being inserted between said plate and portions of said supports at the outer side of said plate opposite said wall of the swimming pool.
4. A system according to claim 3, wherein said plate is movably supported at its lower end and movably engages between lateral supports nEar its upper end, a transducer being provided on each support.
5. A time measuring system for swimming competitions, comprising a plate to be attached to a wall of a swimming pool, means for producing an electric signal upon touching of said plate, a time counter adapted to be controlled by said signal, at least one contact-free electromechanical transducer operable for producing said electric signal upon touching of the plate, said transducer having a feeler and said plate engaging without clearance between said feeler and an elastic supporting portion, wherein said elastic supporting portion is placed between said plate and the adjacent wall of the swimming pool.
6. A system according to claim 4, wherein said plate removably engages into slots of supports with its lower edge and its side edges.
7. A system according to claim 1, wherein said transducer is accommodated in a casing sealed at one side by a membrane disposed between a feeler of said transducer and said plate.
8. A system according to claim 1, wherein said timepiece has a control input having an operating threshold above the signal produced by static bias and waves in the swimming basin.
9. A time measuring system for swimming competitions, comprising a plate to be attached to a wall of a swimming pool, means for producing an electric signal upon touching of said plate, a time counter adapted to be controlled by said signal, at least one contact-free electromechanical transducer operable for producing said electric signal upon touching of the plate, and a differentiating circuit in the transmitting canal for said signal and a control input in said time counter operable by the differentiated signal.
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