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CN1029505C - Mini-instrument for exercising and recovering muscle force - Google Patents

Mini-instrument for exercising and recovering muscle force Download PDF

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Publication number
CN1029505C
CN1029505C CN 92112177 CN92112177A CN1029505C CN 1029505 C CN1029505 C CN 1029505C CN 92112177 CN92112177 CN 92112177 CN 92112177 A CN92112177 A CN 92112177A CN 1029505 C CN1029505 C CN 1029505C
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CN
China
Prior art keywords
present
kinds
instrument
circuit
power supply
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Expired - Fee Related
Application number
CN 92112177
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Chinese (zh)
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CN1085812A (en
Inventor
张毓笠
杨五强
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Tsinghua University
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Tsinghua University
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Priority to CN 92112177 priority Critical patent/CN1029505C/en
Publication of CN1085812A publication Critical patent/CN1085812A/en
Application granted granted Critical
Publication of CN1029505C publication Critical patent/CN1029505C/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The present invention belongs to the field of medical electronic instruments. The present invention is characterized in that all functions of the instrument are realized by an analogue circuit; the instrument comprises a power supply, an oscillation circuit, a slope link, a single-stability delay circuit, a subtraction circuit, a power amplifier and an output electrode. The present invention has the advantages of low power consumption, small size, simple circuits and favorable electric stimulation effect. The present invention can be widely used for various kinds of gymnastical muscular training, moving treatment and physiotherapy, and is applied to biological medicine instruments. The present invention can be widely used for various kinds of gymnastical muscular training, moving treatment and physiotherapy, and is applied to biological medical instruments. The present invention is used for treating patients with muscular dystrophy in orthopaedics, nerve damage, paralysis, poliomyelitis, etc.

Description

Mini-instrument for exercising and recovering muscle force
The invention belongs to electronic instrument technology field, particularly be used for the electronic machine of human body exercise for power and rehabilitation.
Electricity irritation can increase muscle strength of body and is familiar with by people already and be used for athletic training.Studies show that different electricity irritation frequencies can produce different effects to the different types of muscle of human body.For this reason, developed the instrument of various muscle strength reinforcing both at home and abroad.Generally each partly forms this quasi-instrument by power supply, microcomputer, D/A, amplifier, display and output electrode.This instrument is according to people's flesh physiological mechanism, in order to realize that people's various exercise for power are produced Expected Results, with different pulse frequency, the various parameters that are modulated into different action times are carried out reasonable disposition, and be compiled into software program, be stored in selective use in the microcomputer in advance.Above-mentioned instrument also exists following weak point, one, and this instrument power source is general direct to obtain the needed voltage output of instrument by the 220V power supply through transformation.Because instrument directly is connected with civil power 220V, causes easily by trainer's mental pressure; Its two, the equipment circuit protective measure is not comprehensive; Its three, this instrument display adopts charactron, power consumption is big; Its four, instrument master-plan automatization is not high enough, instrument is bigger, uses convenient, flexible inadequately.
The present invention is intended to overcome the weak point of above-mentioned instrument, designs a kind of pocket exercise for power, instrument, all adopts analog circuit to realize the instrument repertoire, uses more safe and reliablely, makes things convenient for, power consumption is little and with low cost.
The present invention includes power supply, amplifier, output electrode, it is characterized in that also comprising the oscillating circuit that produces two kinds of different cycles (frequency) oscillator signal, the single stabilization delay circuit that a kind of signal is wherein delayed time, two kinds of signals are carried out synthetic slope link respectively, and two kinds of signals are carried out the parts such as operational amplifier of subtraction.Its operation principle block diagram as shown in Figure 1, the present invention is realized by analog circuit fully, design principle is: the oscillator signal that is produced two kinds of different frequencies by oscillating circuit, when wherein a kind of signal is delivered to single stabilization delay circuit, also be sent to the slope link, another kind of signal is directly delivered to the slope link, this two paths of signals is delivered to the subtraction circuit be made up of amplifier respectively and is produced pulse width by subtraction and fix then, frequency adjustable, the time dependent impulse waveform of amplitude, this waveform is delivered to power amplifier through the amplitude potentiometer and is carried out power amplification, exports needed stimulus waveform by output electrode.
The present invention not only have volume little, in light weight, realize that circuit is simple, plurality of advantages such as cost is low, and the good electricity irritation effect that has kept existing instrument to have equally, the present invention can be widely used in the flesh training of all kinds physical culture, exercise therapy and physical therapy, be used for biomedical instrument to orthopaedics, refreshing smart damage section, paralytic, the treatment of poliomyelitis etc.
Brief Description Of Drawings
Fig. 1 is a principle of the invention block diagram
Fig. 2 is embodiment of the invention overall circuit figure
The invention provides a kind of embodiment overall circuit as shown in Figure 2, its composition and operation principle are described in detail as follows: the oscillating circuit of present embodiment is to be realized by two oscillating circuit NE556; Single stabilization delay circuit is realized by 74LS123, the slope link is realized that by the diode resistance content network subtraction circuit realizes that by amplifier LF353 power amplifier is TDA2003, power supply provides the power supply of three kinds of volt values by commutator or battery, and the operation principle with each several part describes respectively below.
Oscillating circuit produces minor cycle signal and large period signal, and divides two-way output, and the large period signal directly send ramp circuit, and the minor cycle signal divides two-way, and one the tunnel directly send the slope link to be modulated by the large period signal, and another road send single stabilization delay circuit to delay time.The purpose of time-delay is for from pulsewidth positive negative pulse stuffings such as amplifier outputs.Above-mentioned minor cycle signal V 01The variation of waveform pulsewidth is regulated by RC 5Finish.Example: t 1=400 μ s are pulsewidth computing formula t then 1=0.7RC 5The minor cycle signal of present embodiment design has two kinds of pulsewidths; t 1Be 200 μ s~400 μ s, t 2Be 40 μ s~100 μ s.Said minor cycle signal has three kinds of frequencies, is respectively: f 1Be 2HZ~10HZ, f 2Be 33HZ~45HZ, f 3Be 60HZ~70HZ, these three kinds of frequencies are by RC 5Adjusting obtains, its formula t=0.7RC 5Said large period signal waveform is the rising that is used for controlling the minor cycle signal waveform, maintenance, fall time, for example T 3=(rising+retention time) 6S, T 4=(decline+intermittent time) 6S, computing formula: T 3=0.7RC 7, T 4=0.7RC 7The signal of minor cycle signal and time-delay through large period signal modulation back by the profiled pulse signal of two kinds of distinct pulse widths of ramp circuit output, its amplitude in time by zero behind certain hour to maximum, maximum drops to minima after maintenance a period of time more gradually.For example, the minor cycle signal is slowly risen and use t =1S the time, keep t m=5S, t then slowly descends 7=1S keeps t mGo round and begin again after=the 5S, the design of this circuit makes human body sensory comfortable again.Computing formula: t 5=t 7=0.7R 6C 5t m=t 3-t 5t k=t 4-t 7Synthetic two kinds of slope profiled pulses are delivered to the subtractor that amplifier is formed, two waveforms are subtracted each other, the signal of amplifier subtractor output is delivered to the power amplifier input and is amplified, and is exported by output electrode again.
Present embodiment adopts two kinds of power supply modes of alternating current-direct current, and is indoor or the occasion rectifier power supply of alternating current source is arranged, both economical like this, other occasions can be with rechargeable battery powered, and present embodiment needs three kinds of magnitude of voltage power supplies, promptly+and 5V,-5V and+12V, + 12V is directly obtained by commutator or battery, is I, and J is put power supply,-5V produces pulse by agitator and obtains through rectifying and wave-filtering, be the amplifier power supply ,+5V is produced through 7805 by+12V, and it is most of circuit supply.

Claims (1)

1, a kind of pocket exercise for power, instrument, two oscillating circuits that comprise power supply, power amplifier output electrode, two kinds of different frequency oscillator signals of generation, single stabilization delay circuit that minor cycle signal is wherein delayed time and the operational amplifier that said two kinds of signal frequencies is carried out subtraction, said power supply is for being provided by commutator, the power supply that comprises three groups of different volt values, it is characterized in that said two oscillating circuits adopt two oscillating circuit NE556, said single stabilization delay circuit adopts 74LS123; Also comprise said two kinds of signals are carried out synthetic slope link respectively, said slope link is realized by the diode resistance content network; Said operational amplifier is LF353, and said power amplifier is TDA2003; Said minor cycle signal has three kinds of frequencies, is respectively f 1Be 2HZ~10HZ, f 2Be 33HZ~45HZ, f 3Be 60HZ~70HZ, its pulse has two kinds, is respectively t 1Be 200 μ s~45 μ s, t 2Be 40 μ s~100 μ s.
CN 92112177 1992-10-21 1992-10-21 Mini-instrument for exercising and recovering muscle force Expired - Fee Related CN1029505C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92112177 CN1029505C (en) 1992-10-21 1992-10-21 Mini-instrument for exercising and recovering muscle force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92112177 CN1029505C (en) 1992-10-21 1992-10-21 Mini-instrument for exercising and recovering muscle force

Publications (2)

Publication Number Publication Date
CN1085812A CN1085812A (en) 1994-04-27
CN1029505C true CN1029505C (en) 1995-08-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 92112177 Expired - Fee Related CN1029505C (en) 1992-10-21 1992-10-21 Mini-instrument for exercising and recovering muscle force

Country Status (1)

Country Link
CN (1) CN1029505C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9211086B2 (en) 2010-10-11 2015-12-15 Juno Medical Llc Method for indicating physiological stress level and recovery from stress and device to be utilized in method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9211086B2 (en) 2010-10-11 2015-12-15 Juno Medical Llc Method for indicating physiological stress level and recovery from stress and device to be utilized in method

Also Published As

Publication number Publication date
CN1085812A (en) 1994-04-27

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