CN102974034A - Physiotherapy instrument with pulse-width modulation (PWM) technique used - Google Patents
Physiotherapy instrument with pulse-width modulation (PWM) technique used Download PDFInfo
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- CN102974034A CN102974034A CN 201110265157 CN201110265157A CN102974034A CN 102974034 A CN102974034 A CN 102974034A CN 201110265157 CN201110265157 CN 201110265157 CN 201110265157 A CN201110265157 A CN 201110265157A CN 102974034 A CN102974034 A CN 102974034A
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Abstract
A physiotherapy instrument with a pulse-width modulation (PWM) technique used is composed of a power input and output circuit, a PWM generating circuit, an electric pulse stimulation control circuit, an electrical stimulation output electrode, a machine shell and an infrared probe. A probe is the infrared probe. The infrared probe is composed of an input inserting groove, an adjustment key, an infrared bulb, a cooling fan and the like. The physiotherapy instrument with the PWM technique used is characterized in that PWM generated by one of microprocessors of the PWM generating circuit is magnified and turned out to be an electric pulse stimulation signal, the electric pulse stimulation signal directly drives an electric pulse stimulation, a PWM wave form sent from the microprocessor is adjustable, and frequency and intensity of output electrical stimulation are controlled through control of duty ratio, frequency and chill time of the output wave form. Output of the infrared probe is directly driven through the PWM sent from one of the microprocessors of the PWM generating circuit. Shining and heating emitting intensity of an infrared lamp is controlled through adjusting the duty ratio of the PWM.
Description
Technical field
The present invention relates to a kind of physical therapy medical instrument, especially a kind of physical therapy apparatus that utilizes the PWM technology.
Background technology
It is very extensive that the PWM technology is used, and PWM a kind ofly carries out digitally coded method to analog signal level.By the use of high-resolution counter, modulated being used for of the dutycycle of square wave encoded to the level of a physical simulation signal.As long as bandwidth is enough, any analogue value can use PWM to encode.Such as some motor speed governing etc.In medical apparatus and instruments, can be used in the circuit of electric pulse stimulation and infrared light fine adjustment output intensity.
And the output voltage majority of the existing general regulating circuit of technology all to be the hardware modulation method be calculates loaded down with trivial details shortcoming and propose for solving equal-area method, its principle is exactly as modulation signal desirable waveform, the signal of accepting modulation as carrier wave, obtain desired PWM waveform by the modulation to carrier wave. usually adopt isosceles triangle wave as carrier wave, when modulated signal wave is sine wave, resulting is exactly the SPWM waveform, can consist of triangular wave carrier and Sine Modulated wave generation circuit with analog circuit, determine their intersection point with comparator, constantly the break-make of switching device is controlled at intersection point, just can be generated the PWM ripple.But this simulation circuit structure is complicated, is difficult to realize accurate control.
The present invention utilizes the numeral of microprocessor to export a kind of very effective technology that analog circuit is controlled, and utilizes the PWM technology not only can export the waveform of different patterns, but also can obtain stable voltage, thereby realize accurately control.
Summary of the invention
Shortcoming in order to overcome that prior art can not be controlled accurately and can not variation to regulate waveform the invention provides a kind of output and can obtain stable and adjustable PWM waveform, thus can accurately control electricity irritation output and infrared output the physical therapy medical equipment.
The technical solution adopted for the present invention to solve the technical problems is: a kind of physical therapy apparatus that utilizes the PWM technology, it is characterized in that it by the power supply imput output circuit, PWM circuit for generating, electric pulse stimulation control circuit, the electricity irritation output electrode, casing and infrared probe form.Probe is infrared probe, and probe is by input slot, the compositions such as regulating key and infrared bulb and radiator fan.A kind of physiotherapeutic instruments that utilizes the PWM technology, it is characterized in that by one tunnel PWM that produces wherein of microprocessor in the PWM circuit for generating, be modulated into the electric pulse stimulation signal through amplifying, the electric pulse stimulation that directly drives, the PWM waveform that microprocessor sends can be modulated, and controls frequency and the intensity of output electricity irritation by dutycycle, frequency and the intermittent time of control output waveform.The output of probe is to drive by the PWM that wherein riches all the way goes out of microprocessor in the PWM circuit for generating is direct, is recently to control the intensity that infrared lamp emits light and heat by the duty of regulating PWM.
The invention has the beneficial effects as follows that the present invention utilizes the numeral of microprocessor to export a kind of very effective technology that analog circuit is controlled.Electric pulse output can obtain stable voltage, and can realize accurate control.Has electric pulse simulation acupuncture and massage, infrared intensification produces hot biological effect, and the function of tool medicine iontophoretic injection, it is on the basis of Chinese medicine meridian Therapeutic Method, tradition and modern treatment method, collection micro computer simulation control utilizes infrared emanation, medicine-inductiveness, electric pulse to act on pathological tissues, promote local metabolic and activating immune system, change the peripheral nerve irritability, make the pathological tissues medicine be in the high concentration state and reach therapeutical effect.
Description of drawings
Fig. 1 is a kind of principle schematic of physical therapy apparatus of the PWM of utilization technology.
Fig. 2 is a kind of circuit connection diagram of physical therapy apparatus of the PWM of utilization technology.
1. power supply imput output circuits among the figure, 2.PWM circuit for generating, 3. electric pulse stimulation control circuit, 4. infrared light control circuit, 5. electric pulse stimulation output electrode, 6. infrared probe, 7. human body soft tissue, 8. microprocessor 9.R5 resistance, 10.Q2 audion, 11.R6 resistance, 12.R7 resistance, 13.Q3 audion, 14.C1 electric capacity, 15.R3 resistance, 16. transformator, 17.R4 resistance, 18.R1 resistance, 19.Q4 audion, 20. light emitting diodes, 21.R2 resistance.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
A kind of physical therapy apparatus that utilizes the PWM technology as shown in Figure 1, by power supply imput output circuit 1, PWM circuit for generating 2, electric pulse stimulation control circuit 3, infrared light control circuit 4, electric pulse stimulation output electrode 5, infrared probe 6, human body soft tissue 7 forms.Wherein power supply imput output circuit 1 can be PWM circuit for generating 2, and electric pulse stimulation control circuit 3 and infrared light control circuit 4 provide accurately voltage.PWM circuit for generating 2 can produce multiple pulse signal.Wherein have one the tunnel to be output as electric pulse stimulation control circuit 3 and to provide multi-frequency, multiple dutycycle, multiple electrical stimulation pattern; Other one the tunnel for infrared light control circuit 4 provides continuously accurately PWM, thereby reaches the purpose of accurate control infrared light intensity.
A kind of electrical schematic diagram that utilizes the physical therapy apparatus of PWM technology as shown in Figure 2, by microprocessor 8, R5 resistance 9, Q2 audion 10, R6 resistance 11, R7 resistance 12, Q3 audion 13, C1 electric capacity 14, R3 resistance 15, transformator 16, R4 resistance 17, R1 resistance 18, Q4 audion 19, D1 light emitting diode 20, R2 resistance 21.The core component of pulse generation is microprocessor 8, the 9th human hair combing waste by it goes out the end that the electric pulse stimulation waveform is connected to R5 resistance 9, the B that the other end of R5 resistance 9 is connected to Q2 audion 10 extremely goes up, the C utmost point of Q2 audion 10 receives+12V on, the E utmost point of Q2 audion 10 is received an end of R7 resistance 12, the B that the other end of R7 resistance 12 is received Q3 audion 13 extremely goes up, the E utmost point ground connection of Q3 audion 13, the C utmost point of Q3 audion 13 connects two feet of transformator 16 and a foot of C1 electric capacity 14, another foot of C1 electric capacity 14 connects a foot of transformator 16 and a foot of R3 resistance 15, another foot of R3 resistance 15 meets GND, the tripod of transformator 16 connects a foot of R4 resistance 18 and a utmost point of electricity irritation output, and four feet of transformator 16 connect another foot of R4 resistance 17 and another foot of point stimulation output.The tenth human hair combing waste of microprocessor 8 goes out the B utmost point that accurate PWM ripple connects the Q4 audion, the E utmost point ground connection of Q4 audion, the C utmost point of Q4 audion connects an end of R1 resistance 18, the voltage of another termination+5V of R1 resistance 18, ten tripods of microprocessor 8 connect the negative electrode of D1 light emitting diode 20, the anode of D1 light emitting diode 20 connects an end of R2 resistance, R2 resistance other end ground connection.
Claims (3)
1. physical therapy apparatus that utilizes the PWM technology, it is characterized in that: it is comprised of power supply imput output circuit, pulse generating circuit, pulse control circuit, electricity irritation output electrode, casing and probe, probe is infrared probe, probe is by input slot, the compositions such as regulating key and infrared bulb and radiator fan.
2. a kind of physical therapy apparatus that utilizes the PWM technology according to claim 1, it is characterized in that: wherein one the tunnel directly driven by pulse generating circuit, the PWM waveform that sends can be modulated, and controls frequency and the size of output electricity irritation by dutycycle, frequency and the intermittent time of control output waveform.
3. a kind of physical therapy apparatus that utilizes the PWM technology according to claim 1 is characterized in that: the output of probe wherein one the tunnel is directly driven by pulse generating circuit, is recently to control the intensity that infrared lamp emits light and heat by the duty of regulating PWM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110265157 CN102974034A (en) | 2011-09-02 | 2011-09-02 | Physiotherapy instrument with pulse-width modulation (PWM) technique used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110265157 CN102974034A (en) | 2011-09-02 | 2011-09-02 | Physiotherapy instrument with pulse-width modulation (PWM) technique used |
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| CN102974034A true CN102974034A (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110265157 Pending CN102974034A (en) | 2011-09-02 | 2011-09-02 | Physiotherapy instrument with pulse-width modulation (PWM) technique used |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687175A (en) * | 2014-02-14 | 2017-05-17 | 生旭生物科技有限公司 | Sinusoidal drive system and method for phototherapy |
| CN108498319A (en) * | 2018-04-24 | 2018-09-07 | 河南爱因糖尿病健康科学研究院股份有限公司 | Diabetic supersession therapeutic equipment and its method for generating class sinusoidal signal |
-
2011
- 2011-09-02 CN CN 201110265157 patent/CN102974034A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687175A (en) * | 2014-02-14 | 2017-05-17 | 生旭生物科技有限公司 | Sinusoidal drive system and method for phototherapy |
| CN108498319A (en) * | 2018-04-24 | 2018-09-07 | 河南爱因糖尿病健康科学研究院股份有限公司 | Diabetic supersession therapeutic equipment and its method for generating class sinusoidal signal |
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Application publication date: 20130320 |