| 摘要 |
PROBLEM TO BE SOLVED: To provide a prize winning sensor which can accurately detect the quantity of game balls which passes when a plurality of the game balls continuously pass, and normally operates even under an environment at +5°C or lower and +30°C or higher, of which the manufacturing cost and the part cost for the assembly and inspection are low, and for which the mass-productivity and the yield of a lead switch at the maker for the manufacture of the lead switch are good, and which is suitable for mass-production. SOLUTION: The optimal magnetic flux density of a magnet is computed from an approximation depending on a working value of the lead switch for this prize winning sensor, and a difference (corresponding difference) between the working value and an opening value, and a magnetization regulation is performed. COPYRIGHT: (C)2005,JPO&NCIPI
|
