SU1549546A1 - Device for monitoring ball hit outside the field - Google Patents

Abstract

The invention relates to sports games and can be used when playing volleyball. The purpose of the invention is to improve the accuracy of controlling the out-of-balance of the ball. When a signal from the sensor 1 and the sensor 7 signal of the same duration are simultaneously received by the device, the comparison unit 6 generates a signal, which indicates that the ball is out. 2 Il.

Description

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

The purpose of the invention is to improve the accuracy of control.

FIG. 1 shows a functional diagram of the device; in fig. 2 - timing diagrams for the operation of the device.

The device contains a touch sensor mA 1, a transmitter 2 installed in m 3, a receiver 4, a display unit 5, N units of comparison 6, N pressure sensors 7, a pulse generator 8, a key 9, a HE element 10, a key 11, an adder 12 modulo "2, the element is NOT 13, the first 14 and the second 15 triggers, the first 16 and the second 17 schemes I.

The device works as follows.

The mh 3 with the radio transmitter 2, being in the game, at any touch, radiates a radio signal, which is perceived and converted by the receiver 4 into a signal of a certain duration. The display unit 5 records the duration of the contact time. The same signal arrives at key 9 and opens it for a time equal to the duration of the incoming signal. From the generator 8, through the public key 9, the pulse inputs are fed to the second inputs of the N comparison units.

Sensors 7, when sensing pressure from a shock, form signals that arrive at the first inputs of the respective comparison units 6.

When simultaneously receiving signals from the sensor 2 m 3 and sensor 7 of the same duration, the comparison unit 6 generates a signal that goes to the second input of the indicator 5. At the same time, an alarm (the light comes on), indicating that the ball goes out, t Ie to the site of one of the sensors 7.

The signal comparison unit 6 operates as follows.

When the device is turned on during the absence of signals from the pressure sensor 3 and the pressure sensor 7, the signals NOT are formed at the inputs of the element 16 and 17 by the elements HE 10 and HE 13. In this case, the element And 17 sets the triggers 14 and 15 to the initial state, in which at the output of the second trigger 15 you set the level "1, and at the output of the first trigger 14 - the level" O. Thus, in the initial state, at the second, third, and fourth inputs of the element 16, And 16 is formed at the first input. At the output of the element And 16 no signal.

During the game, various types of signals may appear in the device. Consider the main.

The signal enters the comparison unit 6 signals either from the meter (tm) or from the sensor 7 (te) (Fig. 2a).

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If the signal is generated only at the output of the receiver 4, the key 9 opens and the pulses from the generator 8 through the key 9 arrive at the second input of the adder 12 modulo 2 and to the first input of the trigger 14. Since there are no signals at the first input of the adder 12, then its output to the first input of the trigger 15 receives "1, which is set at the output of" O, i.e., the second input of the element I 16 is set to "O. At the end of the signal from m 3, the elements NOT 10 and NOT 13 at the third and fourth inputs AND 16 form "1, but since not all inputs have" 1, the signal at the output of the element And 16 is absent, and the element 17 sets the triggers 14 and 15 in the initial state.

If the signal td is generated only at the output of the sensor 7, then the pulses from the generator 8 through the public key 11 are sent only to the first input of the adder 12, which triggers the trigger 15 to a working state and at the second input of the element 16, an "O" is generated. Since there is no signal from the train, there is no signal at the first input of the AND 16 element either. At the moment of termination of the signal from sensor 7, at inputs 3 and 4 of element AND 16, "1" is formed, but no signal is generated at the output.

The im signal from ma 3 and id from sensor 7 goes to comparison block 6 at the same time, but the beginning and end of their action does not match (Fig. 26).

In this case, at the output of the adder 12 modulo 2, a pulse sequence of the form 111 ... 1000 ... 0111 ... 1 is formed, where "1 corresponds to the moment of action of one of the signals, and" O corresponds to their joint flow into the adder 11.

"1 sets the trigger 15 to an operational state, which is changed only after the termination of the signals. The trigger at the time of receipt of the signal from the key 5 enters the working state and forms "1 at the first input of the element 16. Thus, at the time of receipt of" units at the inputs 3 and 4 of the element 16 at its second input "1 is absent, therefore The output of the AND 16 signal is not generated, and the triggers 14 and 15 take the initial state.

The signals tt and t arrive at the comparison unit at the same moment, but the end of their action does not coincide (Fig. 2b).

The adder 12 generates a sequence of the form 000 ... 0111 ... 1. Since the onset of action of the signals is the same, there are no units at the output of the adder 12, the trigger 15 does not change its initial state, with the result that ' At the second input of the element 16 there is " 1. The trigger 14, under the influence of the signal from the meter, changes its initial state and at the first input of the AND element 16 is generated. However, at the time of the end of the joint operation of the signals, the adder 12 forms "units that put the trigger 15 into a working state, and then by the time the" units from the HE 13 and HE 10 elements arrive at the second input of the AND 16 there is an "O". The signal at the output of the element And 16 is not formed.

The signals tt and t arrive at different times, and end simultaneously (Fig. 2d).

The adder 12 forms a sequence of the form 111 ... 1000 ... 0. At the initial time of operation of the adder 12, the trigger 15 assumes a working state and does not change it until the signals expire, i.e., at the second input of the element I 16, "O and at its output at the moment of arrival of signals from the elements HE 10 and HE 13 The "unit" is not formed, but the AND element 17 sets the triggers 14 and 15 to the initial state.

The signals im and t coincide to the duration and time of action (Fig. 2e).

The adder 12 forms a sequence of the form 000 ... 0. The trigger 15 does not change its state, with the result that ' at the second input of the AND element 16 there is ' 1. The trigger 14 under the action of the signal from the meter takes on a working state and forms an AND 16 «1 at the first input of the element. After the termination of the signals, the elements HE 13 and HE 10 form "units on the third and fourth inputs of the element AND 16. At the moment of simultaneous arrival of" 1 on all four inputs on the output of the element 16, a signal is generated that enters the display unit 5 and turns on the alarm, and the triggers 14 and 15 of the And elements 17 are reset.

Thus, the algorithm of operation of the signal comparison unit 6 ensures that the indicator turns on only when the ball falls outside the playing field into the area of the area of one of the sensors 7. At the same time, any other touch of the meter is fixed by a digital indicator.

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Claims (1)

Invention Formula A device for monitoring the contact with the touch, containing a sensor for touching the touch with the transmitter installed inside the receiver, the receiver associated with the first input of the display unit, N comparison units, the first inputs of which are connected to the outputs of N pressure sensors installed along the perimeter of the playing court, the first outputs of the comparison units being connected to the second input of the unit indications, characterized in that, in order to increase the control accuracy, a pulse generator, a first key, a first element NOT are inserted into the device, the output of the pulse generator is connected to the second inputs of the comparison units and the first input of the first a key, the second input of which is connected to the receiver output, and the output to the third inputs of the comparison blocks and to the input of the first element NOT, the output of which is connected to the fourth inputs of the comparison blocks, the comparison block containing the second key, modulo-2, the second element NOT , the first and second triggers and the first and second AND circuits, the first input of the second key being the first input of the comparison unit and the second input of the second key the second input of the comparison unit, and the output of the second key are connected to the first input of the modulo "2 and in ohm vto0 cerned NOT element, the second input of the adder modulo "2 is the third input of the comparison unit and the first input of the first flip-flop, the output of the adder modulo" 2 connected to the first input of the second flip-flop, the outputs of the first and second flip-flops 5 is connected to the first and second inputs of the first AND circuit, the output of which is the first output of the comparison unit, and the third input is connected to the output of the second HE element and the first input of the second AND circuit, 0, the fourth input of the first circuit AND is the fourth input of the comparison unit and is connected to the second input of the second circuit AND connected to the second inputs of the first and second triggers.