Integrationssummierer

摘要

1,005,903. Selective signalling. W. ROTH. June 4, 1963 [June 5, 1962], No. 22239/63. Heading G4H. An integrating arrangement for producing pulses representative by their number of the time integral of a D.C. input voltage comprises an integrating circuit for producing an output increasing in one direction for one polarity of a D.C. input and in the opposite direction for an input of opposite polarity, means for supplying the input D.C. signal to be integrated to the integrating circuit through a polarity reversing switch, means for determining when the integrated output reaches predetermined values in each direction and producing an output pulse at each such instant, and means responsive to the output pulse for reversing the switch. In Fig. 1 an input signal on lines 10 and 101 passes through a reversing switch 11 to the input resistance 12 of an integrating circuit comprising a high gain amplifier 13 and a feed-back capacitor 14. The amplifier will accept input signals of either polarity and the voltage on capacitor 14 represents the integral of the input. When this voltage reaches a predetermined level, a circuit 15 produces a pulse which passes to a counter 16 and which changes over switch 11 so that capacitor 14 starts charging in the opposite direction. Circuit 15 may comprise a bridge circuit of diodes witha Zener diode across a diagonal, Figs. 3 and 4 (not shown). The switch 11 may comprise a double-pole double-throw relay, Fig. 5 (not shown), though electronic switching circuits may be used if faster switching is required In modifications for use where the input signal may change sign, Figs. 6 and 8 (not shown), a reverse signal sensor unit is connected to lines 10 and 101 and produces an output when the input changes sign; this output alters the direction of counting of the counter 16 and may also be used to change over a reversing switch similar to switch 11 and in series with it, so that capacitor 14 continues to charge in the same direction when the input changes sign.