| 摘要 |
<p>PURPOSE:To simply and quickly grasp and effectively manage a seated number (idle seat number) in various vehicles or various installations and their positions as required. CONSTITUTION:The equipment is provided with plural frequency oscillators 11-1n corresponding to plural customer seats respectively and outputting different oscillating frequencies for each customer seat, plural pressure switches 21-2n connecting respectively to the frequency oscillators 11-1n and operated when a customer takes a seat, a frequency mixer 30 receiving plural oscillating frequency signals outputted from the frequency oscillators 11-1n via the pressure switches 21-2n and mixing the signals, a frequency discrimination device 40 receiving the frequency signal outputted from the frequency mixer 30 and discriminating the signal into the oscillating frequency signal for each customer seat and providing an output, and a display section 50 receiving an oscillating frequency signal for each customer seat outputted from the frequency discrimination device 40 and displaying the signal corresponding to the position of each customer seat.</p> |
