SU995823A1

SU995823A1 - Device for fixing sportsmen position

Info

Publication number: SU995823A1
Application number: SU813280164A
Authority: SU
Inventors: Владимир Степанович Иванов; Юрий Дмитриевич Ульяницкий
Original assignee: Ленинградский Ордена Ленина Электротехнический Институт Им.В.И.Ульянова (Ленина)
Priority date: 1981-04-20
Filing date: 1981-04-20
Publication date: 1983-02-15

Description

(54) УСТРОЙСТВО ФИКСАЦИИ ПОЛОЖЕНИЯ СПОРТСМЕНА(54) DEVICE OF FIXING THE POSITION OF A SPORTSMAN

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Изобретение относитс к устройствам регистрации во врем спортивных сост заний и может быть использовано дл фиксации положени спортсмена.The invention relates to recording devices during sports events and can be used to fix the position of an athlete.

Известно устройство фиксации положени спортсмена, содержащее передатчик, установленный на спортсмене, петлевую приемную антенну, приемник и блок измерени , св занный с блоком индикации 1.A device for fixing the position of an athlete is known, comprising a transmitter mounted on the athlete, a loop receiving antenna, a receiver and a measuring unit associated with the display unit 1.

Недостатком этого устройства вл етс невысока точность измерени положени спортсмена, так как сигнал, определ ющий местонахождение спортсмена зависит не только от смещени вдоль одной измер емой координаты, но и от смещени по другим координатам, а также от изменени ориентации оси антенны передатчика.A disadvantage of this device is the low accuracy of measurement of the position of the athlete, since the signal determining the athlete's location depends not only on the displacement along one measured coordinate, but also on the displacement on other coordinates, as well as on the change in the orientation axis of the transmitter antenna.

Цель изобретени - повышение точности измерени .The purpose of the invention is to improve the measurement accuracy.

Поставленна цель достигаетс тем, что устройство фиксации положени спортсмена, содержащее передатчик, установленный на спортсмене, петлевую приемную антенну, приемник и блок измерени , св занный с блоком индикации, имеет контактный выключатель , коммутатор, тактовый генератор , блок формировани максимума сигнала , пороговый блок, причем петлева приемна антенна выполнена в виде р да отводов от общего контура петли, один из отводов которой соединен с первым входомThe goal is achieved by the fact that the athlete’s position fixing device, which contains a transmitter installed on the athlete, a loop receiving antenna, a receiver and a measuring unit connected to the display unit, has a contact switch, a switch, a clock generator, a signal maximum shaping unit, a threshold unit, moreover, loop receiving antenna is made in the form of a row of taps from the common loop loop, one of which taps is connected to the first input

S приемника, а другие отводы подключены к первым входам коммутатора, выход которого св зан с вторым входом приемника, выход которого св зан с входами блока формировани максимума сигнала и поро ,Q гового блока, а выход последнего из них соединен с входом тактового генератора, выходы которого подключены к второму входу коммутатора и первому входу блока измерени , второй вход которого св зан с выходом блока формировани максимумаS receiver, and other taps connected to the first inputs of the switch, the output of which is connected to the second input of the receiver, the output of which is connected to the inputs of the maximum signal shaping unit and the pore, Q of the booster unit, and the output of the last one connected to the input of the clock generator, outputs which are connected to the second input of the switch and the first input of the measuring unit, the second input of which is connected to the output of the maximum shaping unit

15 сигнала, а контактный выключатель подключен к передатчику.15 signal, and the contact switch is connected to the transmitter.

На фиг, 1 представлена блок-схема устройства; на фиг. 2 - график зависимости амплитуды сигнала в приемной антенне от смещени передатчика относительно Fig, 1 shows the block diagram of the device; in fig. 2 is a graph of the amplitude of the signal at the receiving antenna versus transmitter offset relative to

20 центра приемной антенны.20 center receiving antenna.

Claims

The device contains a loopback antenna. 1 with a number of taps from a common loop loop, switch 2, to the first inputs of which are connected all taps of a loopback receiving antenna 1, except the first, receiver 3, the first input of which is connected to the first tap of the loopback receiving antenna 1, and the second to the output of switch 2 , block 4 of forming the maximum signal, the input of which is connected to the output of the receiver 3, threshold block 5, the input of which is connected to the input of block 4 forming the maximum of the signal, clock generator 6, the input of which is connected to the output of the threshold block 5, and one of the outputs connected to The first input of the switch 2, the measurement unit 7, the first input of which is connected to the second output of the clock generator 6, and the second input connected to the output of the maximum signal generation unit 4, the display unit 8, the input of which is connected to the output of the measurement unit 7, transmitter 9, contact switch 10 connected to the transmitter 9. The device operates as follows. The loop-top receiving antenna 1 is located in the region of the athlete's likely location, for example, in the area of the repulsion plan for long jumps. A contact switch 10 with transmitter 9 is attached to the athlete’s foot. When foot pressure is applied to the support, the contact switch 10 turns on the transmitter 9. The signal of the transmitter 9 is received by the loop receiving antenna 1, amplified in receiver 3, and triggers the threshold unit 5, which starts the clock generator 6. The clock pulses go to measurement unit 7, which represents subtractive counter, which records the number of incoming pulses. Also, the clock pulses through switch 2 alternately connect the taps of the loop receiving antenna 1 to the receiver 3, while the amplitude of the signal at its output will depend on the position of the transmitter 9 relative to the tap of the loop receiving antenna 1, which is currently connected to the receiver 3. The maximum signal shaping unit 4 estimates the amplitude of these signals that came from the output of receiver 3 and when a maximum signal appears at the input, issues a command to the measuring unit 7, which by it stops counting the clock and pulses and provides information on the location of the athlete on the display unit 8. The measurement accuracy is determined by the distance (step) between the taps of the loop receiving antenna, and since it can be quite small, the proposed device can significantly improve the accuracy of the measurement of the athlete's location. Claims An athlete position fixation device comprising a transmitter mounted on an athlete, a loop antenna, a receiver and a measuring unit associated with a display unit, characterized in that, in order to improve the measurement accuracy, it has a contact switch, a switch, a clock generator, a signal forming unit, a threshold unit, the loop receiving antenna being made as a series of taps from a common loop loop, one of which taps is connected to the first receiver input, and the others We are connected to the first inputs of the switch, the output of which is connected to the second input of the receiver, the output of which is connected to the inputs of the maximum signal shaping unit and the threshold unit, and the output of the last of them is connected to the input of the clock generator, the outputs of which are connected to the second input of the switch and the first input of the measurement unit, the second input of which is connected to the output of the signal forming unit, and the contact switch is connected to the transmitter. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 844009, cl. A 63 B 23/00, 1981.