CN204274432U - Can external pressure calibration electric sphygmomanometer - Google Patents

Abstract

The utility model discloses a kind of can external pressure calibration electric sphygmomanometer.Electric sphygmomanometer in the market does not possess the real-time Presentation Function of static pressure, is not easy to carry out dynamic and static pressure calibration.This utility model comprises pressure sensor block, Signal-regulated kinase, microprocessor module and pressure vessel assemblies, pressure sensor block and cuff orifice, pressure sensor block is connected with microprocessor module signal by Signal-regulated kinase, it is characterized in that: be communicated with by electromagnetic valve between pressure vessel assemblies with cuff interface, be used for the electromagnetic valve of isolated pressure container assemblies during calibration and be in closed condition all the time, ensure that external air source that pressure sensor block receives is not under pressure the interference of inflator pump and air bleeding valve in container assemblies.The electromagnetic valve be connected in series in this utility model gas circuit structure by the opening and closing of Single-chip Controlling electromagnetic valve, thus ensures signal that pressure transducer receives by the interference of inner inflatable pump and air bleeding valve.

Description

Can external pressure calibration electric sphygmomanometer

Technical field

This utility model belongs to detection technique field, relate to a kind of can external pressure calibration electric sphygmomanometer.

Background technology

In recent years, along with the sickness rate of the cardiovascular disease such as hypertension in crowd is more and more higher, sphygomanometer is widely used in Various Hospitals and family.Traditional mercurial sphygmomanometer all can produce harm to the mankind and environment, and such sphygomanometer adopts Ke's formula sound method, and judged disappearance and the appearance of pulse artificially by stethoscope, measurement error is large, poor repeatability.

Within 2010, country has issued JJG692-2010 " noinvasive automatic measuring sphygmomanometer vertification regulation ", and this code has been done to specify clearly to calibration methods such as the electric sphygmomanometer static pressure error of indication, blood pressure indicating value repeatability.Electric sphygmomanometer in the market based on oscillographic method all can not show static pressure, thus cannot carry out the calibration of static state, ambulatory blood pressure, can not ensure the accuracy of blood pressure measurement; Do not possess the functions such as the memory storage of blood-pressure measurement data and network service, intelligence degree is not high simultaneously yet.

Summary of the invention

For overcoming the deficiency of existing electric sphygmomanometer, the purpose of this utility model is to design a kind of electric sphygmomanometer carrying out external pressure calibration, the calibration of static pressure and dynamic pressure can be realized, improve accuracy and the convenience of blood pressure measurement in medical institutions and family.

For achieving the above object, the technical solution adopted in the utility model is as follows:

This utility model comprises pressure sensor block, Signal-regulated kinase, microprocessor module and pressure vessel assemblies, pressure sensor block and cuff orifice, pressure sensor block is connected with microprocessor module signal by Signal-regulated kinase, be communicated with by electromagnetic valve between pressure vessel assemblies with cuff interface, be used for the electromagnetic valve of isolated pressure container assemblies during calibration and be in closed condition all the time, ensure that external air source that pressure sensor block receives is not under pressure the interference of inflator pump and air bleeding valve in container assemblies.

Furtherly, also comprise communication module, described communication module is connected with microprocessor module signal.

This utility model devises the gas circuit structure of serial connection electromagnetic valve, and the electromagnetic valve be connected in series in this gas circuit structure by the opening and closing of Single-chip Controlling electromagnetic valve, thus ensures signal that pressure transducer receives by the interference of inner inflatable pump and air bleeding valve.

Accompanying drawing explanation

Fig. 1 be can external pressure calibration electronic blood pressure measurement system structure of device figure;

Fig. 2 is blood pressure measurement algorithm flow chart;

Fig. 3 is external pressure calibration gas line structure figure;

Fig. 4 is static pressure calibration menu interface flow chart;

Fig. 5 is static pressure calibration algorithm flow chart;

Fig. 6 is Dynamic pressure calibration menu interface flow chart.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, this can external pressure calibration electric sphygmomanometer be made up of cuff, pressure vessel assemblies, pressure sensor module, Signal-regulated kinase, auxiliary function module, communication module and microprocessor module.Achieve the collection of pressure signal, process and display, there is the pressure calibration of sound state, information stores, the functions such as data communication.

Fig. 2 is blood pressure measurement algorithm flow chart, sphygomanometer adopts conventional amplitude characteristic ratios method to measure human blood-pressure, amplitude characteristic ratios method mainly determines systolic pressure and the diastolic pressure of human body by the systolic pressure coefficient determined and diastolic pressure coefficient, as long as therefore determine that systolic pressure coefficient and diastolic pressure coefficient can complete the Measurement accuracy to human blood-pressure accurately.

Fig. 3 is external pressure calibration gas line structure figure; During external pressure calibration, electric sphygmomanometer wants external source of consistent pressure or blood pressure simulator, both act on pressure transducer by cuff interface, in order to avoid the interference of inner inflatable pump and air bleeding valve when calibrating, this electric sphygmomanometer has been connected in series an electromagnetic valve in gas circuit design, during calibration, electromagnetic valve is in closure state by the control of single-chip microcomputer, ensure that source of the gas that pressure transducer receives by the interference of inner inflatable pump and air bleeding valve.

Fig. 4 is static pressure calibration menu interface flow chart, can external pressure calibration electric sphygmomanometer there is static pressure Presentation Function, the voltage signal that pressure transducer exports can be converted to pressure signal and show by this function, therefore the force value of actual voltage value and the display transmitted can be preserved in electric sphygmomanometer inside, and the calibration that can be static pressure is prepared.The external source of consistent pressure of sphygomanometer, source of consistent pressure shows reference pressure value by standard pressure gauge, and menu interface is chosen static calibration and entered static calibration mode, menu interface display current pressure values.Source of consistent pressure gives the first normal pressure y ₁, pressure transducer experiences the first normal pressure y ₁and export corresponding magnitude of voltage because sphygomanometer is forbidden, then interface display is by magnitude of voltage the current pressure values converted is current pressure is chosen by right and left key upper and lower key regulates current pressure values until current pressure equals the first normal pressure y ₁time, preserve by OK button, now sphygomanometer saves the first normal pressure y ₁and the actual voltage value that pressure transducer exports input the second normal pressure y in the same way ₂and preserve voltage with same mode of operation with the second normal pressure y ₂, the algorithm finally again starting static calibration by OK button completes the operation of static calibration, and the algorithm of static calibration as shown in Figure 5.

Fig. 5 is the algorithm flow chart of static calibration, and static calibration adopts 2 calibration methods, by the voltage preserved in calibration mode first normal pressure y ₁and voltage second normal pressure y ₂bring in equation (1), (2) and solve new features slope of a curve a ₀with the intercept b of new features curve ₀and bring into equation (3) obtain new characteristic curve can complete static pressure calibration function.

$y_1=a_0\·\left(x_1^{*}\right)+b_0---\left(1\right)$

$y_2=a_0\·\left(x_2^{*}\right)+b_0---\left(2\right)$

y＝a ₀·x+b ₀(3)

Fig. 6 is the menu interface operational flowchart of Dynamic pressure calibration, the external blood pressure simulator of sphygomanometer, menu interface is chosen dynamic calibration and is entered dynamic calibration pattern, menu interface display systolic pressure and diastolic pressure, blood pressure simulator gives known standard systolic pressure and diastolic pressure, right and left key chooses systolic pressure (diastolic pressure), LCD shows systolic pressure (diastolic pressure) and systolic pressure coefficient (diastolic pressure coefficient), right and left key chooses systolic pressure coefficient (diastolic pressure coefficient), upper and lower key regulates systolic pressure coefficient (diastolic pressure coefficient), until when on LCD, the systolic pressure (diastolic pressure) of display is identical with the systolic pressure that blood pressure simulator inputs (diastolic pressure), final systolic pressure coefficient (diastolic pressure coefficient) is preserved by OK button, and new systolic pressure coefficient (diastolic pressure coefficient) is applied in blood pressure measurement algorithm, the function of Dynamic pressure calibration can be completed.

Claims (2)

1. can external pressure calibration electric sphygmomanometer, comprise pressure sensor block, Signal-regulated kinase, microprocessor module and pressure vessel assemblies, pressure sensor block and cuff orifice, pressure sensor block is connected with microprocessor module signal by Signal-regulated kinase, it is characterized in that: be communicated with by electromagnetic valve between pressure vessel assemblies with cuff interface, the electromagnetic valve being used for isolated pressure container assemblies during calibration is in closed condition all the time, ensure that external air source that pressure sensor block receives is not under pressure the interference of inflator pump and air bleeding valve in container assemblies.

2. according to claim 1 can external pressure calibration electric sphygmomanometer, it is characterized in that: also comprise communication module, described communication module is connected with microprocessor module signal.