DE2135019A1 - Control device for monitoring and displaying the physical exertion of an athlete - Google Patents

Description

t) r.-lng. Wooden houses

Patent attorneys Offenbach am Main Hermstrasse 37 - Tel. 88 i6 42

July 13th, 1971 Dr.H./St

Anton H u b e r

49OO Langenthal / Switzerland

Control device to monitor and display the physical stress of an athlete

The invention relates to a control device for monitoring and displaying the physical stress of an athlete several electrodes for taking the pulse and with a device for evaluating the measured pulse rate.

It is a device for monitoring the pulse of a person who does sports Person known, which is a portable device for converting the pulse of the person into electrical signals includes. This device also contains a transmitter through which a carrier modulated with these signals is emitted will. In one place there is a carrier modified for this responding receiver aufyestellb, which this pulse

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registered and, if necessary, evaluated. Such devices are expensive to buy and a single athlete is not able to actively participate in the sport at the same time and that Device to operate.

It is the object of the invention to provide a control device that gives the athlete the opportunity to benefit from his physical Monitor the load-dependent pulse and indicate to him when certain limits are exceeded. In addition, the device should easy to use and cheap to manufacture.

The control device according to the invention is characterized in that that the device is arranged in a flat housing, that the housing with an elastic sand for attachment to Body and is provided for carrying the electrodes, and that said means comprises a first adjustable threshold value meter for generating a signal when the pulse frequency reaches an upper limit value, a second adjustable threshold value meter to generate another signal when the pulse rate reaches a lower limit value, and one to this Has signals responsive acoustic and / or optical display device.

The subject matter of the invention is explained in more detail below with reference to the drawing, for example.

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1 shows an athlete with a control device for monitoring his pulse,

Pigβ 2 a perspective view of the control device,

3 shows a graphical representation of the pulse in function the side and

Fig. 4- a block diagram of the evaluation device the measured pulse rate

The athlete shown in FIG. 1 wears a control device which has a flat housing 1. “In the housing 1 is a device 2 for monitoring and evaluating the electrical voltages arranged, which are generated by the heartbeat and removed from the body surface by means of three electrodes 3 These tensions are a function of the athlete's heart rate. The changes in the voltages mentioned, which in f The rhythm of the pulse fluctuates, resulting electrical impulses are fed to the device 2.

In Fig. 2, the control device is shown in a perspective view. An elastic band 4- is attached to the housing 1, which is used to attach this housing to the body and to carry

gene of the electrodes 3 is used. The recording equipment contains a Loudspeaker 5 from which a buzzing sound is emitted when the

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monitored pulse rate exceeds an upper limit, or if the monitored pulse rate exceeds one by means of a second rotary knob 7 below adjustable lower limit.

These two limits are described in more detail below with reference to FIG. This figure shows the pulse rate as a function of time. During training, it is absolutely essential that the athlete pays attention to his performance and never strains himself to the point of complete exhaustion. It is also very important that the athlete waits for the entire recovery period before starting to work again. The time segment during which the athlete worked is designated by 10. The pulse frequency rises with work starting from a normal value, for example 90 pulse beats per minute, and then reaches the upper limit of, for example, 180 pulse beats per minute. Then a first threshold value meter contained in the device responds and the loudspeaker 5 emits an acoustic signal as a sign for the athlete that the upper limit has been reached. Now it is time for the athlete to switch on a recovery break, which is marked 11 · The recovery phase is only completed when the pulse has reached its initial value again. Once the heart rate has fallen back to the original Number ahl beats per minute, says a second, contained in the facility Schwellwertan, to display the Schliss the recovery time. _

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Depending on. The recovery breaks can be adapted to the type of training. For example, with so-called continuous interval work, a rest break of only a third of the full one is sufficient Recovery time to do a large number of reps * chen. In this type of training, the athlete sets the second threshold value meter to 120, for example, by means of button 7 Pulse beats per minute · In the so-called interval speed run, f the load on the athlete is greater, so that two thirds of the full recovery time are necessary to achieve a sufficiently large one Number of repetitions to be achieved. For this purpose, the athlete sets the button 7, for example, to 100 pulse beats per Minute one. During the repetition run, the load on the athlete is maximal, so that the entire recovery time must be waited for Must · With this type of training, the athlete sets button 7 to a normal value, for example 90 pulse beats per minute a «J

4 shows the block diagram of the device 2. The voltage fluctuations occurring at the electrodes in the rhythm of the pulse are amplified in an amplifier 20 and fed to a post-amplifier 21. The signals amplified in the post-amplifier pass through a limiter 22 to a monostable multivibrator 23 · Based on the signals fed to it, the multivibrator generates a sequence of pulses of constant amplitude and constant duration in the rhythm of the pulse » ^!

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These impulses then reach the monostable multivibrators 24, 25 and to the TJnd gates 26, 27 of a coincidence circuit " The outputs of the monostable multi-vibrators 24, 25 are each on a second input of the AND gates 26, 27 connected. The exits the AND gates 26, 27 are connected to an OR gate 28. The output of the OR gate 28 is a monostable multivibrator 29 connected, the output of which is connected to an LF generator 30. The loudspeaker 5 is connected to the output of the LF generator 30 connected.

The multivibrators 24, 25, which act as threshold meters, are used for controlling the coincidence circuit 26, 27 · The time after which the two monostable multivibrators 26, 27 again in return to their stable state can be set individually by means of the rotary knobs 6, 7 shown in FIG. So can for example, the return time of the monostable multivibrator 24 in a range of 133 to 200 ms and genes of the monostable Multivibrators 25 set in a range from 300 to 466 ms will. These times correspond to 180-150 pulse beats / min for the multivibrator 24 and 120-90 pulse beats / min for the multivibrator 25

In the idle state, there is no signal at the output of the multivibrator 24, that is to say for example a binary ¹¹ O ", and a signal, that is for example a binary" 1 ", is present at the output of the multivibrator 25,

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By the first pulse appearing at the output of the limiter 22 the monostable multivibrator 23 is set. After a The two monostable multivibrators 24, 25 are set in a time of 200 ms. At the one with the second entrance of the And gate connected output of the multivibrator 23 is a binary "O" present, through which the AND gate 26 is blocked. The AND gate 27 is blocked because the first input of the AND gate 27 a binary "1" is supplied from the output of the set multivibrator 25 will. The OR gate 28 remains blocked so that the LF generator 30 is not switched on and the loudspeaker 5 there is no acoustic signal.

It is now assumed that the return time of the multivibrator 24 is 175 ms and that the return time of the multivibrator 25 is set to 400 ms, which is 160 or 100 pulse beats / min. is equivalent to,

The number of pulse beats / min can now.

a) beats above the upper limit of 160 pulse / min,

b) below the lower limit of 100 pulse beats / min, or

c) lie between these two limit values.

In all a) the next pulse arrives at the output of the limiter 22 before the monostable multivibrator 24 enters its output

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position has returned *. This causes both multivibrators 24, 25 are set anew · Bas AND gate 26 is unlocked because a coincidence was determined for it · The OR gate 31 becomes conductive whereby the LF generator 30 is switched on via the multivibrator 29 for approx. 70 ms and the loudspeaker 5 emits an acoustic signal, which indicates to the athlete that the upper limit has been exceeded.

In case b), after the reset time of 175 nis has expired, the Multivibrator 24 return to its original position, so that the And gate 26 is locked. After the reset time of ms has elapsed, the AND gate 27 is unlocked because it has a coherence A signal reaches the OR gate 28, which sets the multivibrator 29 and thus switches on the LF generator 30, so that the loudspeaker 5 emits an acoustic signal, as a sign that the lower limit has been exceeded, i.e. that the athlete's recovery time has ended

In case c), after the reset time of 175 ms has elapsed, the Multivibrator 24 returns to its starting position so that the AND gate 26 is blocked 400 ms of the multivibrator 25 arrives, the AND gate 27 remains blocked and the OR gate 28 is not opened · Therefore remains the loudspeaker 5 mutes · This indicates to the athlete that his

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Heart rate is within the set limits »

The control device described above is simple and can be produce in a rational way, so that the purchase price is low. In addition, it is small and the weight is very low, so that the athlete is not hindered in his activity »This control device gives the athlete the opportunity to exercise to adapt to his individual capabilities without having to rely on an assistant "

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Claims (1)

- 1fr- Expectations : Control device for monitoring and displaying the physical strain of an athlete, with several electrodes for taking pulse and with a device for evaluating the measured pulse beats, characterized in that the device is arranged in a flat housing that the housing with an elastic band for attachment to the body and is provided for carrying the electrodes, and that said device (2) comprises a first adjustable threshold value meter (27) for generating a signal when the pulse frequency reaches an upper limit value, a second adjustable Threshold meter (28) for generating another signal when the pulse frequency reaches a lower limit value, and has an acoustic and / or optical display device (12) responding to these signals. 2 »Device according to claim 1, characterized in that the Threshold meter Qe a monostable multivibrator (24, 25) »whose return time is adjustable and that the outputs of these multivibrators with a coincidence circuit (26, 27 $ 29) for starting up an LF generator (30) when the upper limit value is exceeded or the lower limit value is undershot, are connected. 1Q9884 / 1337