SU475158A1 - Device for recording athlete's spade during long jump - Google Patents

Description

The next multivibrator is launched, etc. These pulses are amplified and delayed in the amplifier 4 and are fed to the starting circuit of the pulsed lamps 6 assembled on the thyristor keys and simultaneously fed to the receiver comparison circuit. Pulsed lamps 6 give flashes of light following one after another with delay intervals. The pulses perceived by the photocell 7 are converted into voltage pulses fed to the comparison circuit 8. At the same time, a corresponding gate pulse from the multivibrator unit 3 of the transmitter arrives at the same circuit. The amplified impulse from the comparison circuit 8 triggers a standby multivibrator 9, in one arm of which a primary relay is connected, causing it to trip. The primary relay includes the corresponding relay of the output unit 10, the signal from which is fed to the display and control unit,

including photo recorder, sound and light alarm.

Subject invention

A device for detecting an athlete's spade during long jumps containing a signal transmitter, a receiver and an indication unit, characterized in that, in order to improve the reliability of fixing the spade, the transmitter has a pressure sensor installed under the jog bar, a block of multivibrators electrically connected to it, and a block of flash lamps connected to the outputs of the respective multivibrators through amplifiers, and the receiver has a block of light-receivers, comparison circuits connected electrically by the inputs to the corresponding light receivers, and a multivibrator unit with a relay, and the relay outputs are connected to the display unit through the output unit.

Fig}

I

Transmitter

P g