CN202078326U

CN202078326U - Monitoring warner

Info

Publication number: CN202078326U
Application number: CN2011200796107U
Authority: CN
Inventors: 赵鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2011-12-21
Anticipated expiration: 2021-03-16

Abstract

A supersensitive heart disease monitoring warner capable of preventing external acoustic disturbance comprises an impulse detection circuit, a monostable trigger circuit, a warning circuit and an audio circuit; a probe MIC (microphone) comprises a capacitance electret microphone and a stethoscope head; a rubber tube is arranged on the stethoscope head; the capacitance electret microphone is arranged in the rubber tube; the model of a trigger IC1 (integrated circuit 1) is NE555; and the model of a four-audio analogue IC2 (integrated circuit 2) is CW9561. The supersensitive heart disease monitoring warner has the advantages of high sensitivity, simple structure, portability and low cost.

Description

Monitoring alarm

Technical field

This utility model relates to a kind of medical monitoring alarm device, the cardiopathic monitoring alarm of particularly a kind of highly sensitive monitoring.

Background technology

Heart disease is having a strong impact on people's life and healthy, and a lot of people are in heart attack unconsciously, and are dead to such an extent as to all rescue measures proved ineffectual.The heart disease monitoring alarm is that giving a warning has just appearred uneven or stolen the stopping time in the heart rate the people, reminds the user heart problem to occur, should have a rest immediately or seek medical advice, and anti-ly is loyal to possible trouble.Existing heart disease monitoring alarm, sensitivity is low, complex structure, inconvenience is carried, and the cost height is unsuitable for producing in enormous quantities and popularizing.

Summary of the invention

The purpose of this utility model is in order to overcome the low baroque defective of existing heart disease monitoring alarm sensitivity, invents a kind ofly can prevent the interferential highly sensitive heart disease monitoring alarm of external sound.

For achieving the above object, the technical scheme that this utility model adopted is:

A kind of monitoring alarm is comprising pulse-detecting circuit, single-shot trigger circuit, warning circuit and acoustics circuit; Its characteristics are: pulse-detecting circuit is made up of probe MIC, resistance R 1 and electric capacity c1, and probe MIC directly is connected with the two poles of the earth of power supply with resistance R 1 series connection back;

Single-shot trigger circuit is made up of audion T1, trigger TC1, resistance R 2, capacitor C 2, C3, the base stage of audion T1 is connected with 2 feet of trigger IC1, and be connected with the MIC that pops one's head in by capacitor C 1, the emitter stage of audion T1 is connected with 7,6 feet of trigger IC1, also be connected with 8,4 feet of resistance R 1 and trigger IC1 by resistance R 2, also be connected by 1 foot of capacitor C 2 with colelctor electrode and probe MIC and trigger IC1,1 foot of trigger IC1 is connected by capacitor C 3 with 5 feet;

Warning circuit is made up of resistance R 7, R8, press button S2, unidirectional controllable silicon S CR, LED and resistance R 3, resistance R 7, press button S2 and resistance R 8 series connection backs are connected with the two poles of the earth of power supply, unidirectional controllable silicon S CR, LED and resistance R 3 series connection backs are connected with the two poles of the earth of power supply, and the control utmost point 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 rings Analogous Integrated Electronic Circuits IC2, audion T2, resistance R 4, R5, R6 and speaker YD by the four tones of standard Chinese pronunciation and forms, 1 foot of IC2 is connected with speaker YD with 4 feet of trigger IC1 respectively by resistance R 4,2 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 R 5 with 5 feet, 3 feet of IC2 are connected with the base stage of audion T2 by resistance R 6, the colelctor electrode of audion T2 is connected with speaker YD, and the emitter stage of audion T2 is connected with 1 foot of trigger IC1.

According to described monitoring alarm, its characteristics are: above-mentioned probe MIC is made up of condenser type Electret condenser microphone and stethoscope head, and stethoscope head is provided with one section sebific duct, and the condenser type Electret condenser microphone is located in the sebific duct.

According to described monitoring alarm, its characteristics are: the model of above-mentioned trigger IC1 is NE555.

According to described monitoring alarm, its characteristics are: the model that the above-mentioned four tones of standard Chinese pronunciation ring Analogous Integrated Electronic Circuits IC2 is CW9561.

The utility model has the advantages that: this utility model is highly sensitive, in the structure letter, is easy to carry, and becomes little cheap.

Description of drawings

Fig. 1 is this utility model circuit theory diagrams.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment this utility model is further described:

A kind of monitoring alarm, as shown in Figure 1, comprising pulse-detecting circuit, single-shot trigger circuit, warning circuit and acoustics circuit; Pulse-detecting circuit is made up of probe MIC, resistance R 1 and electric capacity c1, and probe MIC directly is connected with the two poles of the earth of power supply with resistance R 1 series connection back;

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

In this utility model, the model of trigger IC1 is NE555.

In this utility model, the model that the four tones of standard Chinese pronunciation ring Analogous Integrated Electronic Circuits IC2 is CW9561.

This utility model is carried this utility model at body in use, and is affixed on the heart place, and MIC can be delivered to heart information in the circuit by probe, and heart just can be reported to the police at once if problem is arranged, and reminds the patient to seek medical advice as early as possible, avoids accidents.

Work process of the present utility model is as follows: when the triggerless pulse is imported, and because of trigger 2 feet are high level greater than 2/3Vcc, its 3 foot output low level then, the discharge tube conducting of IC1 inside, capacitor C 2 terminal voltages go to zero; When negative pulse triggers input, make the 2 foot electronegative potentials of IC1 be lower than 1/3Vcc, the JC1 upset, its 3 foot output high level, and the internal discharge pipe ends, and power Vcc is charged to C2 by R2, through one period charging interval, when capacitor C 2 terminal voltages during greater than 2/3Vcc, the upset of IC1 internal trigger, 3 feet are output low level again, at this moment, the discharge tube conducting of IC1 inside, timing capacitor C2 discharges by discharge tube, its terminal voltage is gone to zero, and circuit returns to original state again.As seen monostable circuit has only when trigger impulse makes the 2 foot current potentials of IC1 be lower than 1/3Vcc, and circuit just can be triggered, once circuit is triggered, outfan will keep high level in the time of setting.During this period, even the trigger impulse input is arranged, output can not change yet.

Like this, when heart ticktack sound converts the signal of telecommunication to by probe, send a positive pulse adds to audion T1 through capacitor C 1 base stage, the T1 conducting, with timing capacitor C2 short circuit, approach zero because of the C2 terminal voltage this moment, 2 feet of IC1 are again low level, then its 3 foot output high level; After the pulse in the past, audion T1 ends, and capacitor C 2 is recharged by resistance R 2.

Adjust the time constant t=R2*C2 of monostable circuit, assurance is faced the pulse signal frequency (heartbeat number of times) looked under normal circumstances, charging voltage on the capacitor C 2 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, and acoustics circuit IC2 is sounding not.When the pulse signal that is monitored undesired; as heart stop steathily suddenly or jumping frequency rate slow excessively; then the terminal voltage of capacitor C 2 two input pulses at interval in because the interval growth is when reaching 2/3Vcc, the 3 foot output low levels of IC1 then; LED is lighted; IC2 work, buzzer YD sounding, prompting is worn the human heart bradycardia or is stopped steathily; should take medicine immediately or go to hospital to seek medical advice, in time rescue is handled.After input pulse signal frequency (heartbeat frequency) was recovered normally, 3 feet of IC1 became high level again, and LED extinguishes, and YD stops sounding.

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

Claims

1. monitoring alarm is comprising pulse-detecting circuit, single-shot trigger circuit, warning circuit and acoustics circuit; It is characterized in that: pulse-detecting circuit is made up of probe MIC, resistance R 1 and electric capacity c1, and probe MIC directly is connected with the two poles of the earth of power supply with resistance R 1 series connection back;

2. monitoring alarm according to claim 1 is characterized in that: described probe MIC is made up of condenser type Electret condenser microphone and stethoscope head, and stethoscope head is provided with one section sebific duct, and the condenser type Electret condenser microphone is located in the sebific duct.

3. monitoring alarm according to claim 1 is characterized in that: the model of described trigger IC1 is NE555.

4. monitoring alarm according to claim 1 is characterized in that: the model that the described four tones of standard Chinese pronunciation ring Analogous Integrated Electronic Circuits IC2 is CW9561.