SU1480829A1 - Arrangement for registering out-of-field balls - Google Patents

Abstract

The invention makes it possible to improve the quality of monitoring the hit of the ball out by comparing the signals from the sensor 2 to the touch of the ball and the sensors 6 of pressure located outside the playing field. When the signals coincide in duration, one of the comparison circuits 7 issues a signal to the display unit 5, according to which the alarm goes off. 1 hp f-ly, 3 ill.

Description

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The invention relates to sports games and can be used, for example, when playing or training in volleyball.

The purpose of the invention is to improve the quality of control of the fallout.

Figure 1 shows the structural diagram of the device; Fig. 2 is a comparison circuit; FIG. 3 shows timing diagrams explaining the operation of the comparison circuit.

The device contains m 1, sensor 2 contacts with transmitter 3 installed inside meter 1, receiver 4, display unit 5, pressure sensors 6 located along the perimeter of the playing field, comparison circuit 7. The first inputs of the comparison circuit 7 are connected to the output of the receiver 4, the second inputs of the comparison circuit 7 are connected to pressure sensors 6, and the outputs of the comparison circuit 7 are connected to the second input of the display unit 5, the output of the receiver 4 is connected to the first input of the display unit.

The comparison circuit 7 comprises the first 8, the second 9, the third 10, the fourth 11 and the fifth 12 of the AND circuit, the delay circuit 13, the first 14 and. second 15 keys, RS flip-flop 16, first 17 and second 18 inverters. The first input of the comparison circuit 7 is connected to the input of the first inverter 17 and to the first inputs of the first 8 and second 9 circuits I. The second input of the comparison circuit 7 is connected to the input of the second inverter 18 and to the second inputs of the first 8 and third 10 And circuits, the output of the first inverter 17 is connected to the first inputs of the third 10 and fourth 11 I circuits, the outputs of the third 10 and second 9 I circuits are interconnected and connected to the second control input of the first key 14 and to the input of the second key 15, the output of the second inverter 18 is connected to the second the inputs of the second 9 and fourth 11 circuits And the output of the fourth circuit And 11 is connected to the first control input of the second key 15 and to the S input of the RS flip-flop 16, the output of the first circuit And 8 is connected to the first input of the fifth circuit And 12 and to the input of the delay circuit, the output of which is connected to the input of the first key 14 , the output of the fifth circuit AND 12 is connected with the first control input of the first key 14, the output of which is connected with the output of the comparison circuit 7, the output of the RS flip-flop 16 is connected with the second

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the input of the fifth circuit AND 12, the inverse output of the RS flip-flop 16 is connected to the second control input of the second key 15, the output of which is connected to the R-input of the RS flip-flop 16.

Comparison circuits 7 are designed to compare signals from the receiver 4 and the corresponding sensor 6. In total, the device contains w signals comparison circuits 7.

The pressure sensors 6 are located outside the playing field so as to prevent the playing field and the sensor from simultaneously touching the ball. Each sensor 6 receives pressure from a specific area, the dimensions of which exclude simultaneous contact of the player and the player without touching each other. In total, the device contains m sensors 6, serviced areas of which are located closely, but mechanically and electrically not connected to each other.

The display unit 5 contains a digital indicator of the duration of the contact time and the alarm indicator.

The indicator can be made on the basis of a signal lamp, a relay and a reset button.

The device works as follows.

MW 1 with radio transmitter 3, being in the game, at any touch, radiates a radio signal, which is perceived and converted by receiver 4 into a signal of a certain duration. The digital indicator of the display unit 5 records the duration of the contact time. The same signal is fed to the first inputs m of the signal comparison blocks 7.

The pressure sensors 6, upon sensing the pressure (from the impact of the ball, the player's feet, etc.), generate signals which are applied to the second inputs of the respective comparison circuits 7.

When simultaneously arriving at the device from the radio transmitter 3 meter 1 and sensor 6 of signals of the same duration, the comparison circuit 7 generates a signal that is fed to the auxiliary input of the display unit 5. In this case, an alarm (the lamp lights up) is triggered, which indicates that the ball goes out, i.e. on the site of one of the sensors 6.

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The signal comparison circuit 7 operates as follows.

When the device is turned on during the absence of signals from the radio transmitter 3 meter 1 and from the sensor 6, the elements HE and 17 form signals that go to the inputs of the fourth element I 11, at the input of which a signal is opened that opens the second key 15 and sets the trigger 16 to the original state, state 1 is set at the output.

During the game, various types of signals may appear in the comparison circuit 7.

1. The signal enters the signal comparison circuit 7 either from the ball t (Um) or from the sensor 6 (d) (Fig. 3a)

If the comparison circuit 7 receives the signal LM only from the output of the receiver 4, and the signal from the sensor 6 is absent, the second element AND 9 closes the first key 14 and through the second key 15 enters the R input of the RS flip-flop 16. At This RS-flip-flop 16 enters a state in which the output of the flip-flop corresponds to O and the inverse to 1. The signal from the inverse of the RS-flip-flop 16 closes the second key 15.

Upon termination of the Јm signal and the absence of a signal from sensor 6, i.e. in the period of the CONSTR, the comparison circuit 7 returns to the initial state, in which the second key 15 is opened, and the output of the RS flip-flop 16 takes the state 1.

If in the comparison circuit 7, the signal -CA is received only from sensor 6, then the third element AND 10 generates a signal closing the first key 14 and through the RS flip-flop 16 - the second key

15. At the end of the signal g, the comparison circuit 7 returns to the initial state.

2. Signals 1} d coincide in duration and time of action (fig.Z.d.).

At the time preceding the action of the signals, the device is in the initial state. At the instant t t the simultaneous action of the signals m and fAc of the output of the first element 8 and 8, the input of the delay circuit 13 is a signal that opens the first key 14. At the time t, the effect of the two signals stops simultaneously. The first key 14 continues to stay

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in the open state. The signal from the circuit 13 of the delay through the first key 14 is fed to the second input of the display unit 5 and turns on the detector. The delay time is chosen longer than the contact time.

3. The duration of the signal from the sensor Јd exceeds the duration of the signal from the meter, i.e. d m (figure 3, c).

In this case, after the cessation of the signal прекращm from the output of the receiver, the output of the first circuit NOT 17 appears signal 1, which passes through the third circuit AND 10 to the first key 14 and closes it. Therefore, the delayed signal Cm from the output of the delay circuit 13 does not pass to the output of the comparison circuit and the indicator of the display unit does not work.

Thus, the algorithm of the operation of the comparison circuit 7 ensures that the alarm device is turned on only when the ball falls outside the playing field into the area of a section of one of the sensors 6.

Claims (2)

1. A device for controlling the hit in touch, containing a sensor of contact with the transmitter, installed inside the meter, and a receiver associated with the display unit, characterized in that, in order to increase the accuracy of control, comparison devices have been introduced into the device, pressure sensors located around the playing area, the first inputs of the comparison circuits being connected with the output of the receiver, the second inputs of the comparison circuits are connected to pressure sensors, and the outputs of the comparison circuits are connected with the second input of the display unit. 2. A device according to claim 1, characterized in that the comparison circuit comprises AND circuits, delay circuit, keys, RS flip-flop, inverters, the first input of the comparison circuit being the input of the first inverter and the first inputs of the first and second AND circuits, the second input the comparison circuit is the input of the second inverter, the second input of the first circuit AND, the second input of the third circuit AND, the output of the first inverter is connected to the first inputs the third and fourth And circuits, the outputs of the third and second And circuits are interconnected and connected to the second control input of the first key and to the second switch input, the output of the second inverter is connected to the second inputs of the second And circuit and the fourth And circuit, the output of which is connected with the first control input of the second key and with the S input of the trigger, the output of the first AND circuit is connected to the first input of the fifth circuit AND 808296 and the input of the delay circuit, the output of which is connected to the input of the first key, and the output of the fifth circuit AND is connected to the first control input of the first key, the output of which is the output of the comparison circuit, the output of the RS flip-flop is connected to the second input of the fifth circuit AND The inverse output of the RS flip-flop is connected to Q with the second control input of the second key, the output of which is connected to the R-input of the RS flip-flop. O. of receiver H v L eight ten v eleven 12 E eight g Yu From sensor 5 h " .Output -- FI.2