Pulse time interval measuring system

Claim 2

A pulse time interval measuring system comprising a plurality of signal generating means each generating a pulse train signal, selecting means connectable to any desired one of said signal generating means, step switching means connected to said selecting means and having a first and a second contact mechanism arranged to be changed over stepwise in interlocking relation in response to the output of said selecting means, a CR time constant circuit having a capacitor and a resistor, said CR time constant circuit so connected to said first contact mechanism that said capacitor is charged only when a predetermined contact is connected to said RC time constant circuit, while said capacitor discharges when the remaining contacts are connected thereto, and time display means for measuring the value of the charged voltage in said capacitor to give a digital display of the time corresponding to the charged voltage.

Claim 3

A pulse time interval measuring system comprising input signal switching means for switching over a plurality of input signals each including a plurality of pulse signals, thereby selecting any desired one of said input signals, step switching means connected to said input signal switching means for switching over a plurality of steps in response to the application of the pulse signals included in the selected input signal, a CR time constant circuit controlled in the charging operation thereof by the output of said step switching means, and time display means for measuring the value of the charged voltage in said CR time constant circuit to give a digital display of the time corresponding to the charged voltage, the displaying operation of said time display means being controlled by said step switching means, said step switching means including a first and a second contact mechanism arranged to be changed over stepwise in interlocking relation in response to the application of said pulse signals, said first contact mechanism controlling the charge and discharge of said CR time constant circuit, and said second contact mechanism controlling the operation of said time display means, said first contact mechanism operating in such a manner that a capacitor in said CR time constant circuit is charged only when a predetermined contact is connected thereto, while said capacitor discharges when the remaining contacts are connected thereto, said second contact mechanism being connected to an instruction relay which instructs displaying of time and erasing of the display on said time display means, and said instruction relay is deenergized for erasing the display on said time display means when said first contact mechanism is changed over to the position in which said capacitor is charged.

Claim 4

A pulse time interval measuring system comprising input signal switching means for switching over a plurality of input signals each including a plurality of pulse signals, thereby selecting any desired one of said input signals, step switching means connected to said input signal switching means for switching over a plurality of steps in response to the application of the pulse signals included in the selected input signal, a CR time constant circuit controlled in the charging operation thereof by the output of said step switching means, and time display means for measuring the value of the charged voltage in said CR time constant circuit to give a digital display of the time corresponding to the charged voltage, the displaying operation of said time display means being controlled by said step switching means, said step switching means including a first and a second contact mechanism arranged to be changed over stepwise in interlocking relation in response to the application of said pulse signals, said first contact mechanism controlling the charge and discharge of said CR time constant circuit, and said second contact mechanism controlling the operation of said time display means, said first contact mechanism operating in such a manner that a capacitor in said CR time constant circuit is charged only when a predetermined contact is connected thereto, while said capacitor discharges when the remaining contacts are connected thereto, said second contact mechanism being connected to an instruction relay which instructs displaying of time and erasing of the display on said time display means, and said instruction relay is deenergized for erasing the display on said time display means when said first contact mechanism is changed over to the position in which said capacitor is charged.

Claim 5

A pulse time interval measuring system as claimed in claim 2, wherein said CR time constant circuit comprises a make contact of said instruction relay connected in parallel with said capacitor so that the discharge voltage may not be applied to said time display means during the period of time in which said instruction relay is in the energized state.