CN105326489A - Heart disease monitoring alarm with high anti-interference sensitivity - Google Patents

Abstract

The invention discloses a heart disease monitoring alarm with high anti-interference sensitivity. The heart disease monitoring alarm comprises a pulse detecting circuit, a mono-stable trigger circuit, an alarm circuit and an audio circuit and is characterized in that the pulse detecting circuit comprises a probe MIC, a resistor R1 and a capacitor C1, and the probe MIC is serially connected with the resistor R1 and then directly connected with two poles of a power supply, the probe comprises a capacitive electret microphone and a stethoscope head, a rubber tube is arranged on the stethoscope head, and the capacitive electret microphone is arranged in the rubber tube; the mono-stable trigger circuit comprises a triode T1, a trigger IC1, a resistor R2, a capacitor C2 and a capacitor C3, the base of the triode T1 is connected with the pin 2 of the trigger IC1 and connected with the probe MIC through the capacitor C1, and the transmitter of the triode T1 is connected with the pin 7 and pin 6 of the trigger IC1. The heart disease monitoring alarm is high in sensitivity, simple in structure, convenient to carry and low in cost.

Description

The anti-tampering highly sensitive monitoring alarm for heart disease of a kind of energy

Technical field

The present invention relates to the anti-tampering highly sensitive monitoring alarm for heart disease of a kind of energy.

Background technology

Heart disease drastically influence the life of people and healthy, and a lot of people is in heart attack unconsciously, to such an extent as to all rescue measures proved ineffectual and dead.Monitoring alarm for heart disease has just occurred uneven at the heart rate of people or stolen the stopping time and give a warning, and reminds user heart to occur problem, should have a rest immediately or seek medical advice, and is anti-ly loyal to possible trouble.Existing monitoring alarm for heart disease, sensitivity is low, complex structure, not Portable belt, and cost is high, is unsuitable for producing in enormous quantities and popularizing.

Summary of the invention

For solving above-mentioned existing shortcoming, main purpose of the present invention is to provide a kind of energy of practicality anti-tampering highly sensitive monitoring alarm for heart disease, effectively can prevent the interference of external sound.

For reaching above-described object, the anti-tampering highly sensitive monitoring alarm for heart disease of a kind of energy of the present invention takes following technical scheme:

The anti-tampering highly sensitive monitoring alarm for heart disease of a kind of energy, comprise pulse-detecting circuit, single-shot trigger circuit, warning circuit and acoustics circuit, it is characterized in that, described pulse-detecting circuit is made up of the MTC that pops one's head in, resistance R1 and electric capacity C1, and described probe MIC is directly connected with the two poles of the earth of power supply after connecting with resistance R1, described probe is made up of condenser type Electret condenser microphone and stethoscope head, described stethoscope head is provided with one section of sebific duct, condenser type Electret condenser microphone is located in sebific duct, described single-shot trigger circuit is by audion T1, trigger TC1, resistance R2, electric capacity C2, C3 forms, the base stage of described audion T1 is connected with 2 feet of described trigger IC1, and be connected with probe MIC by described electric capacity C1, the emitter stage of described audion T1 and 7 of described trigger IC1, 6 feet connect, also by 8 of described resistance R2 and resistance R1 and trigger IC1, 4 feet connect, also be connected with 1 foot of colelctor electrode and the MIC and trigger IC1 that pops one's head in by described electric capacity C2, 1 foot of described trigger IC1 is connected by described electric capacity C3 with 5 feet, the model of described trigger IC1 is NE555, described warning circuit is made up of resistance R7, R8, press button S2, unidirectional controllable silicon S CR, LED and resistance R3, described resistance R7, press button S2 are connected with the two poles of the earth of described power supply after connecting with resistance R8, described unidirectional controllable silicon S CR, LED are connected with the two poles of the earth of power supply after connecting with resistance R3, and the control pole of described unidirectional controllable silicon S CR is connected with R8, the negative level of described LED is connected with 3 feet of described trigger TC1, described acoustics circuit by four sound Analogous Integrated Electronic Circuits IC2, threepole pipe T2, resistance R4, R5, R6 and speaker VD form, 1 foot of described IC2 is connected with 4 feet of described trigger IC1 and speaker YD respectively by resistance R4,2 feet of described IC2 are connected with 3 feet of IC1 and the negative level of described LED respectively, 4 feet of described IC2 are connected by resistance R5 with 5 feet, 3 feet of described IC2 by resistance R6 with threethe base stage of pole pipe T2 connects, described in threethe colelctor electrode of pole pipe T2 is connected with described speaker YD, described in threethe emitter stage of pole pipe T2 is connected with 1 foot of described trigger IC1, and the model of described four sound Analogous Integrated Electronic Circuits IC2 is CW9561.

Adopt the present invention of as above technical scheme, there is following beneficial effect:

The present invention is highly sensitive, in structure letter, is easy to carry, and becomes little cheap.

Accompanying drawing explanation

Fig. 1 is circuit theory diagrams of the present invention.

Detailed description of the invention

In order to further illustrate the present invention, be described further below in conjunction with accompanying drawing:

As shown in Figure 1, the anti-tampering highly sensitive monitoring alarm for heart disease of a kind of energy of the present invention, comprises pulse-detecting circuit, single-shot trigger circuit, warning circuit and acoustics circuit; Pulse-detecting circuit is made up of the MIC that pops one's head in, resistance R1 and electric capacity C1, is directly connected with the two poles of the earth of power supply after probe MIC connects with resistance R1;

Single-shot trigger circuit is made up of audion T1, trigger TC1, resistance R2, electric capacity C2, C3, the base stage of audion T1 is connected with 2 feet of trigger IC1, and be connected with probe MIC by electric capacity C1, the emitter stage of audion T1 is connected with 7,6 feet of trigger IC1, also be connected with 8,4 feet of resistance R1 and trigger IC1 by resistance R2, also be connected with 1 foot of colelctor electrode and the MIC and trigger IC1 that pops one's head in by electric capacity C2,1 foot of trigger IC1 is connected by electric capacity C3 with 5 feet.

Warning circuit is made up of resistance R7, R8, press button S2, unidirectional controllable silicon S CR, LED and resistance R3, resistance R7, press button S2 are connected with the two poles of the earth of power supply after connecting with resistance R8, unidirectional controllable silicon S CR, LED are connected with the two poles of the earth of power supply after connecting with resistance R3, and the control pole of unidirectional controllable silicon S CR is connected with R8; The negative level of LED is connected with 3 feet of trigger TC1.

Acoustics circuit by four sound Analogous Integrated Electronic Circuits IC2, threepole pipe T2, resistance R4, R5, R6 and speaker VD form, 1 foot of IC2 is connected with 4 feet of trigger IC1 and speaker YD respectively by resistance R4,2 feet of IC2 are connected with 3 feet of IC1 and the negative level of LED respectively, 4 feet of IC2 are connected by resistance R5 with 5 feet, 3 feet of IC2 by resistance R6 with threethe base stage of pole pipe T2 connects, threethe colelctor electrode of pole pipe T2 is connected with speaker YD, threethe emitter stage of pole pipe T2 is connected with 1 foot of trigger IC1.

In the present invention, probe MIC is made up of condenser type Electret condenser microphone and stethoscope head, and stethoscope head is provided with one section of sebific duct, and condenser type Electret condenser microphone is located in sebific duct.

In the present invention, the model of trigger IC1 is NE555.

In the present invention, the model of four sound Analogous Integrated Electronic Circuits IC2 is CW9561.

The present invention in use, carries with at body by the present invention, and is affixed on heart place, heart information can be delivered in circuit, if heart has problem, just can report to the police at once by probe MIC, reminds patient to seek medical advice as early as possible, avoids accidents.

Work process of the present invention is as follows: when triggerless Puled input, because trigger 2 foot is the high level being greater than 2/3Vcc, then and its 3 foot output low level, the discharge tube conducting of IC1 inside, electric capacity C2 terminal voltage goes to zero; When negative pulse triggers input, the 2 foot electronegative potentials of IC1 are overturn lower than 1/3Vcc, JC1, its 3 foot exports high level, and the cut-off of internal discharge pipe, power Vcc is charged to C2 by R2, through one period of charging interval, when electric capacity C2 terminal voltage is greater than 2/3Vcc, IC1 internal trigger overturns, 3 feet output low level again, now, the discharge tube conducting of IC1 inside, timing capacitor C2 is discharged by discharge tube, its terminal voltage is gone to zero, and circuit returns to original state again.Visible monostable circuit, only have when trigger impulse makes the 2 foot current potentials of IC1 lower than 1/3Vcc, circuit just can be triggered, once circuit is triggered, outfan keeps high level by within the time of setting.During this period, even if there is trigger impulse to input, exports and also can not change.

Like this, when ticktock sound converts the signal of telecommunication to by probe, send a positive pulse adds to audion T1 base stage through electric capacity C1, T1 conducting, by timing capacitor C2 short circuit, now because C2 terminal voltage is close to zero, 2 feet of IC1 are again low level, then its 3 foot exports high level; After pulse in the past, audion T1 ends, and electric capacity C2 is charged by resistance R2.

The time constant t=R2*C2 of adjustment monostable circuit, ensure to be faced the pulse signal frequency (heartbeat number of times) looked under normal circumstances, charging voltage on electric capacity C2 does not reach 6, the 7 foot triggering level 2/3Vcc of IC1, then 3 feet of IC1 remain high level, LED does not work, acoustics circuit IC2 not sounding.When monitored pulse signal is abnormal; as heart stop steathily suddenly or jumping frequency rate excessively slow; then the terminal voltage of electric capacity C2 is in two input pulse intervals, when reaching 2/3Vcc because interval increases, then and the 3 foot output low levels of IC1; namely LED is lighted; IC2 works, buzzer YD sounding, reminds the heart of wearer cross slow or stop steathily; should take medicine immediately or go to hospital to seek medical advice, saving process in time.When input pulse signal frequency (heartbeat frequency) is recovered normally, 3 feet of IC1 become high level again, and LED extinguishes, and YD stops sounding.

Adjustment method of the present invention is as follows: during debugging, mainly adjusts the resistance of R2, changes the time constant of its single-shot trigger circuit.Concrete way is: first survey and will wear human heart jumping frequency rate under normal circumstances, should survey several times more, get the jumping frequency rate that it is minimum, then probe MIC is flicked with finger, simulation heartbeat frequency, LED should not work, and speaker YD penalizes not sounding.Then, the frequency of flicking probe MIC slows down, and makes it lower than normal heartbeat frequency, adjusts potentiometer R2 simultaneously, its LED is lighted, speaker YD sounding.And then flicking probe MIC with normal frequency, LED should extinguish, and speaker YD should stop sounding.When normal frequency, stop bullet and once to pop one's head in MIC, LED should be lighted, and speaker YD answers sounding; Flick frequency retrieval normal time, [not only but also extinguish, speaker YD stops sounding to light emitting diode thereupon.Careful adjustment so repeatedly, and then probe MIC is placed on cardia is finely tuned, until to bradycardia or till the stopping time sends sound and light alarm immediately steathily.Must vary with each individual during adjustment, careful adjustment.

Claims (1)

1. the anti-tampering highly sensitive monitoring alarm for heart disease of energy, comprise pulse-detecting circuit, single-shot trigger circuit, warning circuit and acoustics circuit, it is characterized in that, described pulse-detecting circuit is made up of the MTC that pops one's head in, resistance R1 and electric capacity C1, and described probe MIC is directly connected with the two poles of the earth of power supply after connecting with resistance R1, described probe is made up of condenser type Electret condenser microphone and stethoscope head, described stethoscope head is provided with one section of sebific duct, condenser type Electret condenser microphone is located in sebific duct, described single-shot trigger circuit is by audion T1, trigger TC1, resistance R2, electric capacity C2, C3 forms, the base stage of described audion T1 is connected with 2 feet of described trigger IC1, and be connected with probe MIC by described electric capacity C1, the emitter stage of described audion T1 and 7 of described trigger IC1, 6 feet connect, also by 8 of described resistance R2 and resistance R1 and trigger IC1, 4 feet connect, also be connected with 1 foot of colelctor electrode and the MIC and trigger IC1 that pops one's head in by described electric capacity C2, 1 foot of described trigger IC1 is connected by described electric capacity C3 with 5 feet, the model of described trigger IC1 is NE555, described warning circuit is made up of resistance R7, R8, press button S2, unidirectional controllable silicon S CR, LED and resistance R3, described resistance R7, press button S2 are connected with the two poles of the earth of described power supply after connecting with resistance R8, described unidirectional controllable silicon S CR, LED are connected with the two poles of the earth of power supply after connecting with resistance R3, and the control pole of described unidirectional controllable silicon S CR is connected with R8, the negative level of described LED is connected with 3 feet of described trigger TC1, described acoustics circuit by four sound Analogous Integrated Electronic Circuits IC2, threepole pipe T2, resistance R4, R5, R6 and speaker VD form, 1 foot of described IC2 is connected with 4 feet of described trigger IC1 and speaker YD respectively by resistance R4,2 feet of described IC2 are connected with 3 feet of IC1 and the negative level of described LED respectively, 4 feet of described IC2 are connected by resistance R5 with 5 feet, 3 feet of described IC2 by resistance R6 with threethe base stage of pole pipe T2 connects, described in threethe colelctor electrode of pole pipe T2 is connected with described speaker YD, described in threethe emitter stage of pole pipe T2 is connected with 1 foot of described trigger IC1, and the model of described four sound Analogous Integrated Electronic Circuits IC2 is CW9561.