CN88201619U - Electronic meter for measuring breath pulse and temp. - Google Patents

Abstract

The utility model discloses an electronic meter for measuring breath pulse and temp, which is a medical instrument. The utility model can measure not only respiration and pulse, but also body temperature. Because the utility model uses a senistor and a piezocrystal as sensors, the utility model measures conveniently, which can be used by telemetering through being provided with a plurality of measuring probes and intercoms. In addition, the utility model can export not only digital signal, but also analogue signal, and then the utility model can be used matched with an oscillograph, a recorder, a printer and a micro-computer, etc. The error of measuring respiration and pulse by the utility model is not greater than +/-2 times/minute, and the error of measuring body temperature by the utility model is not greater than +/-0.2 celsius degrees. Thus, the utility model has ascendant cost performance.

Description

Electronic meter for measuring breath pulse and temp.

Electronic type is breathed the pulse clinical thermometer and is belonged to Medical Instruments.

Existing respiratory monitor or pulse instrument are connected in series in proper order by PN junction pick off, amplifier, pulse shaping circuit and counting display circuit and form, and accept the electrocardio ripple by electrode and survey pulse, and PN junction is surveyed frequency of respiration by variations in temperature.Clinical thermometer is connected in series in proper order by PN junction pick off, amplifier, analog-digital converter and counting display circuit and forms, its shortcoming is a function singleness, the interchangeability of PN junction pick off and poor stability, and when measuring breathing and pulse, require patient to lie on the back, also to connect electrode, use inconvenience at upper and lower limb.

In order to overcome above-mentioned shortcoming, this utility model provides a kind of electronic type to breathe the pulse clinical thermometer, it is characterized in that, it is formed by breathing pulses measure circuit and measurement of bldy temperature circuit, a cover changing-over K switch that they are shared ₁With the counting display circuit.The feature of its measurement of bldy temperature circuit is to make temperature-sensing element with critesistor, by thermosensitive circuit 1, bridge circuit 2, comparator 3, analog digital conversion electricity 4, reversing switch K ₁, counting display circuit 5 and digital-to-analogue network 6 etc. are in series, bridge circuit is sent in the output of digital-to-analogue network, another input of analog-digital converter is given circuits 10 from temperature.It is breathed and the pulses measure circuit is by piezoelectric sensor 7, reversing switch K ₂, amplifying circuit 8, shaping circuits for triggering 9, reversing switch K ₁, delay circuit 11 and counting display circuit 5 etc. in proper order serial connection form, its block diagram is seen Fig. 1.

Its layout is seen Fig. 2, Fig. 3 and Fig. 4, and two figure in back are that Fig. 2 amplifies and forms.In Fig. 2, R ₅₁It is critesistor.Direct current amplifier and transistor T R that comparator 3 is made of integrated F007 ₄, TR ₅Form.Analog-digital converter 4 is made of integrated WM-700.Counting display circuit 5 is made of three integrated 7CJO7 and liquid crystal display 13.Digital-to-analogue network 6 is made of 11 field effect transistor 3DJK.Piezoelectric sensor 7 usefulness be piezoelectric crystal plate.Amplifier 8 usefulness be integrated F007.Shaping circuits for triggering 9 are by transistor T R ₁, TR ₂Constitute.Temperature is given circuits 10 and is made up of integrated JK-999.Delay circuit 11 is by integrated 5G1555, light emitting diode Z ₂With transistor T R ₆Form.Temperature alarm circuit 12 light emitting diode Z ₁With buzzer S, bridge circuit is by R ₄₇～R ₅₁Form.

Before take temperature, earlier K ₁Place the d end of analog-digital converter 4, place the alarming value of body temperature temperature to give circuits 10.Counting show value this moment is zero.Thereby, critesistor R ₅₁Be initial value, bridge circuit 2 is in poised state.When take temperature, just there is voltage signal to transport to 3 from 2, after 4 conversions, 5 peak value is just arranged is zero train of pulse output.In 6, corresponding just conducting of field effect transistor makes R in 2 ₄₉The resistance value of this arm descends along with the increase of umber of pulse, and 3 input signal is respective change also.Along with sensing element R ₅₁Improving constantly of sense temperature, the counting show value just constantly increases, and 3 input voltage value also constantly rises, up to R ₅₁When the temperature of institute's perception reached stationary value, the counting show value just no longer increased, and demonstrates a stable temperature value, and the corresponding umber of pulse of numerical value just makes 2 to return to a new poised state through 6 therewith, and at this moment counting show value is exactly the body temperature value.When body temperature surpasses when giving the value of putting, the buzzer that is contained in 12 is just reported to the police, the light emitting diode Z in 12 ₁Just luminous.

When measuring frequency of respiration, earlier K ₁Place a end, K ₂Place c end, when 7 receive breath signal, demonstrate the frequency of respiration value through just being sent to 5 after 8,9 and 11.

When measuring pulse, only need K ₂Place d end get final product, all the other are identical during with the measurement frequency of respiration.

This utility model is owing to adopted reversing switch, and it just has multifunctionality; Owing to adopted critesistor and piezoquartz to make pick off, measuring method is just very easy, patient standing or be seated all can, also needn't undress; If connect 40～50 measuring probes, be used with communication again, it just can be used for remote measurement, and the good ratio of performance to price is arranged.It can also export the analog or digital signal, also can be supporting with oscillograph, monitor, printer and microcomputer etc.

This instrument performance is stable, reliable.The error of measure breathing is not more than ± and 2 times/minute, the error of measuring pulse is not more than ± 2 times/minute, and the error of take temperature is not more than ± and 0.2 ℃.

Claims (1)

1, electronic type is breathed the pulse clinical thermometer, generally be connected in series in proper order and form by electrode (or PN junction), amplifier, pulse shaper and counting display circuit, clinical thermometer is connected in series in proper order by PN junction sensing element, amplifier, analog to digital conversion circuit and counting display circuit and forms, of the present utility model being characterised in that, it is by breathing and the pulses measure circuit forms with the measurement of bldy temperature combination of circuits, and they pass through one and overlap shared reversing switch K ₁Link with the counting display circuit, wherein, breathing and pulses measure circuit are by piezoelectric sensor, reversing switch K ₂, amplify circuits for triggering, reversing switch K ₁Be in series in proper order with the counting display circuit, its measurement of bldy temperature circuit is then made sensing element with critesistor, and this circuit is then by thermosensitive circuit, bridge circuit, comparator, analog-digital converter, reversing switch K ₁, counting display circuit and digital-to-analogue network etc. are in series, the output of digital-to-analogue network feeds back to bridge circuit, another input of analog-digital converter is from temperature preset circuit.

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