CN2282900Y - Radiation intensity fluctuation modulator for infrared health-care device - Google Patents

Abstract

The utility model relates to a modulator for an infrared health-care device with the radiation intensity fluctuation of an infrared radiator as the human body cardiac rhythm pulsation signal modulation. The modulator comprises a direct current power supply circuit, a cardiac rhythm signal generation circuit of a cardiac rhythm sensor, an amplifying circuit, a high and low pressure isolating circuit of a photoelectric coupler, and a modulation circuit. The modulation circuit is composed of a bidirectional controlled silicon voltage regulating circuit and a bridge type modulation input circuit. The cardiac rhythm fluctuating signals output by the photoelectric coupler get into modulation from the control pole of the controlled silicon. The utility model is used for infrared health-care devices, and the infrared health-care device with cardiac rhythm signal modulation has better health care and therapeutic effect.

Description

The radiant intensity fluctuation modulating device of infrared ray health-care appliance

This utility model relates to the apparatus of physiotherapy, specifically a kind of modulating device of infrared radiation intensity.

At present, the apparatus of physiotherapy makes eye bright various, is main thought but how to adapt to human-body biological field with selection or regulating frequency.The light radiation intensity of infrared ray health-care appliance is after instrument is selected, and is just fixing for it basically.Realized the preparation test of the human body rhythm of the heart by homemade apparatus in the laboratory, found to have the excellent energy resonance effect, helped the rehabilitation treatment infrared radiation intensity.But corresponding modulating device does not see that work is among disclosed document.

The purpose of this utility model is to provide a kind of radiant intensity fluctuation modulating device that is applicable to the infrared ray health-care appliance.It can be from accepting the fluctuation amplitude that the health person extracts the infrared radiation of rhythm signal synchronous modulation on one's body.

Obtain the voltage fluctuation signal of the reflection heartbeat rhythm and pace of moving things on the main thought of technical solutions of the utility model by the rhythm signal pick off, the running voltage of modulation infrared radiator after circuit amplifies, thereby the fluctuation intensity modulated of realization infrared radiation.

The radiant intensity fluctuation modulating device of the infrared ray health-care appliance that this utility model provides, mainly by rhythm of the heart sensor, amplifying device, photoelectrical coupler and power supply are formed, and it is characterized in that its circuit arrangement comprises:

A DC power supply circuit, external AC power supply is used to provide the direct-current working volts of circuit arrangement;

A rhythm signal generation circuit is made of the rhythm signal pick off, and its outfan is connected with input amplifier;

An amplification filtering circuit is connected on the outfan of rhythm signal generation circuit, to transducing signal amplify, filtering;

A high/low-voltage isolation circuit constitutes by promoting pipe and photoelectrical coupler, and the outfan of its input and amplification filtering circuit joins, and outfan is access to modulation circuit, with photoelectrical coupler high-low pressure safety is isolated;

A modulation circuit, form by bidirectional thyristor for regulating voltage circuit and bridge-type modulation input circuit, bidirectional triode thyristor is connected with infrared radiation lamp and is inserted the AC network power supply in the major loop, be provided with the rc phase shifter circuit control silicon controlled angle of flow in the control loop, bridge circuit is serially connected in phase shift with between the resistance, electric capacity, corresponding the joining of outfan of bridge circuit outfan and high/low-voltage isolation circuit.

The good effect of this utility model device is:

1, the rhythm of the heart sensor in the device does not have specific (special) requirements, and it is convenient to select.It can adopt photoelectric finger pulse sensitive device, pulse audio frequency rhythm signal pick off or heart sound transducer.

2, the employing photoelectrical coupler is realized the isolation between the circuit arrangement high-low pressure, and it is effective, high safety.

3, adopt the bidirectional triode thyristor circuit, make the convenient simplification of infrared radiator power adjustments.

4, the bridge-type modulation input circuit is set, can be good fit with the dc pulse signal output of photoelectrical coupler, the control utmost point by triode ac switch is modulated, regulate its bypass resistance, the may command modulation depth makes the intensity fluctuation of radiation output beat available in a bigger scope with the rhythm of the heart.

Be described further below in conjunction with embodiment and accompanying drawing thereof:

Fig. 1 is the circuit structure schematic diagram of modulating device.

Referring to Fig. 1, this circuit arrangement is divided into five parts:

One, transformation rectification circuit.Transformator T _rJoin with AC network, it is exported through D _1-4Rectification, R ₁, C ₁, C ₂Capacitance-resistance filter, T ₁, D ₅, R ₂5 volts of direct currents are exported in voltage stabilizing, and the working power of making DC circuit is provided.

Two, pulse tone keeps pouring in sensor signal generation circuit.With Electret condenser microphone S (JM901) contact radial artery pulse position, collect audio signal, through capacitor C ₃The coupling input amplifying circuit amplifies.R ₃Be current-limiting resistance.

Three, amplification filtering circuit.Select common discrete component amplifying circuit for use.By the detected voltage fluctuation signal of pulse audio sensor through C ₃Coupling and T ₂, T ₃, T ₄, T ₅Amplify, the input of being defeated by photoelectrical coupler (GH2101B) then is connected D ₆Two ends.Secondary emitter following wherein, the straight coupling of intermediate secondary amplifies.Regulate resistance R ₇Regulate the sensitivity of amplifying circuit by regulating biasing.C ₅Be filter capacitor, with removing the clutter interference signal.

Four, height voltage isolation circuit.Control circuit partly is a low-voltage DC supply, and the infrared lamp RL of infrared radiator is the high-voltage alternating power supply.By photoelectrical coupler hi-lo circuit safety is separated.Its outfan D ₇On photoelectric current and rhythm signal beat and change synchronously.

Five, modulation circuit.This circuit adds the rhythm signal modulation input circuit and obtains on the basis of adopting capacitance-resistance phase shift triode ac switch control infrared lamp RL.Major loop is by K switch ₀, infrared lamp RL and bidirectional triode thyristor T ₆Form.Two-way switch ST (the JDB that control loop is connected by the bidirectional triode thyristor and the control utmost point thereof ₃), the phase shift resistance R ₁₀, R ₁₁, capacitor C ₆Form.C ₆Can provide the gate current pulse to two-way switch during discharge, thereby guarantee its triggering and conducting.Be serially connected with bridge circuit between its resistance and the electric capacity, introduce at intermediate node A, the B of bridge circuit, guarantee that its dc pulse signal is added in controllable silicon T uninterruptedly from the modulation signal that photoelectrical coupler comes ₆Control extremely go up.Fixed resistance R ₁₀With the adjusting resistance R ₁₁Be used for setting and regulating the angle of flow, change the radiant intensity of infrared lamp RL.Fixed resistance R ₁₂With the adjusting resistance R ₁₃Be used to do the bypass adjusting of modulation signal, can be used to change modulation depth.K switch is its modulation switch.R ₁₄, D ₁₂Formation work display circuit.

The work process of circuit arrangement is summarized as follows:

Energized, the power turn-on K switch ₀, D ₁₂Lighting promptly, demonstration enters duty.When pick off is positioned at wrist radial artery pulse position, can search the rhythm of the heart signal of beating, signal amplifies through the amplifying circuit of operate as normal.Sensitivity adjusting is by R ₇Set, the rhythm signal after the amplification is through D ₆, D ₇The photoelectricity coupling is reduced into the fluctuating current signal, inserts from bridge circuit intermediate node A, B and modulates, and signal is strong and weak with K and R ₁₃Do control, regulate, and the radiation power of infrared lamp RL is by R ₁Regulate and set.

Experiment shows, from promoting the photoelectricity coupling circuit of level back, modulation circuit, comprise the bidirectional triode thyristor circuit, also can do close substituting though use relay instead, make infrared lamp produce the pulsed radiation identical with the rhythm of the heart, but it can not realize the adjusting of radiant intensity and modulation depth, frequent in addition switch work its injury concerning the operating contact of relay is serious in fatefulue.

Claims (1)

1, a kind of radiant intensity fluctuation modulating device of infrared ray health-care appliance, mainly by rhythm of the heart sensor, amplifying device, photoelectrical coupler and power supply are formed, and it is characterized in that its circuit arrangement comprises:

A DC power supply circuit, external AC power supply is used to provide the direct-current working volts of circuit arrangement;

A rhythm signal generation circuit is made of the rhythm signal pick off, and its outfan is connected with input amplifier;

An amplification filtering circuit is connected on the outfan of rhythm signal generation circuit, to transducing signal amplify, filtering;

A high/low-voltage isolation circuit constitutes by promoting pipe and photoelectrical coupler, and the outfan of its input and amplification filtering circuit joins, and outfan is access to modulation circuit, with photoelectrical coupler high-low pressure safety is isolated;

A modulation circuit, form by bidirectional thyristor for regulating voltage circuit and bridge-type modulation input circuit, bidirectional triode thyristor is connected with infrared radiation lamp and is inserted the AC network power supply in the major loop, be provided with the rc phase shifter circuit control silicon controlled angle of flow in the control loop, bridge circuit is serially connected in phase shift with between the resistance, electric capacity, corresponding the joining of outfan of bridge circuit outfan and high/low-voltage isolation circuit.

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