CN113925477B - Automatic calibration system of electronic sphygmomanometer - Google Patents
Automatic calibration system of electronic sphygmomanometer Download PDFInfo
- Publication number
- CN113925477B CN113925477B CN202110787027.XA CN202110787027A CN113925477B CN 113925477 B CN113925477 B CN 113925477B CN 202110787027 A CN202110787027 A CN 202110787027A CN 113925477 B CN113925477 B CN 113925477B
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- sphygmomanometer
- display controller
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000036772 blood pressure Effects 0.000 claims description 27
- 239000002775 capsule Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 6
- 230000002572 peristaltic effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 7
- 230000032683 aging Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02233—Occluders specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0247—Pressure sensors
Abstract
The invention provides an automatic calibration system of an electronic sphygmomanometer, belonging to the technical field of manufacturing of measuring instrument detection equipment; the invention comprises the following steps: a sphygmomanometer and a calibration assembly; the sphygmomanometer comprises: a cuff and a display controller; the cuff is internally provided with a pressure sensor which is electrically connected with the display controller; a preset data processing function is arranged between the display controller and the pressure sensor; the calibration assembly includes: calibrating the controller and simulating the arm; the simulated arm is internally provided with a standard air bag, the standard air bag is provided with a plurality of standard sensors, and the standard sensors are electrically connected with the calibration controller; the calibration controller is electrically connected with the display controller. According to the invention, standard pressure parameters are generated and acquired through the simulated arm, and the sphygmomanometer is calibrated through the calibration assembly, so that various measurement errors are synthesized, and the calibration precision is higher.
Description
Technical Field
The invention relates to a sphygmomanometer calibration technology, in particular to an automatic electronic sphygmomanometer calibration system, and belongs to the technical field of manufacture of sphygmomanometer calibration equipment.
Background
Along with the increasing importance of people on health, the application of the sphygmomanometer is also more and more widespread, and the requirements of people on the sphygmomanometer are no matter the requirements on measurement results are higher and higher. The traditional sphygmomanometer cuff and the host machine are integrally designed, and once the problem of measurement accuracy occurs, the traditional sphygmomanometer cuff and the host machine are required to be disassembled for replacement and calibration of components.
In the prior art, because the cuff of the sphygmomanometer is inflated by an air pump generally and the principle of detecting pressure drop waveforms is utilized, the detection structure is inaccurate due to the aging and abrasion of inflation equipment and rubber elements; meanwhile, semiconductor parameters in the pressure sensor drift along with time and other factors, and the sphygmomanometer needs to be calibrated after leaving a factory or being used for a period of time.
When the existing integrated machine is calibrated or calibrated to a metering office or an after-sale maintenance point in the market, the host computer of the sphygmomanometer is required to be detached from the cuff, and then the host computer is connected with the testing equipment through the catheter, so that the sphygmomanometer is easy to damage and very troublesome.
Even if the pressure sensor is metered and calibrated in an automatic calibration mode, the loss of the air bag and the air pump cannot be compensated in the process, so that no corresponding equipment is available on the market at present to help people to relieve corresponding doubts.
Therefore, developing an automatic calibration system that can automatically compensate and calibrate the measurement error of the whole electronic sphygmomanometer is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a novel automatic calibration system of an electronic sphygmomanometer, which compensates the measurement error of the whole sphygmomanometer through self-checking of a calibration component inserted externally, so as to solve the technical problem that the whole error of the electronic sphygmomanometer in the prior art cannot be eliminated.
The invention provides an automatic calibration system of an electronic sphygmomanometer, which comprises: a sphygmomanometer and a calibration assembly; the sphygmomanometer includes: a cuff for detecting blood pressure and a display controller; the cuff is internally provided with an air bag and a pressure sensor, and the air bag and the pressure sensor are electrically connected with the display controller; a preset data processing function is arranged between the display controller and the pressure sensor;
the calibration assembly includes: calibrating the controller and simulating the arm; a standard air bag is arranged in the simulated arm, a plurality of standard sensors are arranged on the standard air bag, and the standard sensors are electrically connected with the calibration controller; the calibration controller is electrically connected with the display controller;
the simulated arm is inserted into the cuff, the standard sensor obtains a pressure signal and transmits the signal to the calibration controller, the pressure sensor transmits a measurement result of the pressure sensor to the calibration controller through the display controller, and the calibration controller changes the data processing function.
The electronic sphygmomanometer automatic calibration system as described above, wherein the simulated arm further comprises: an elastic capsule for wrapping the standard balloon; the plurality of standard sensors are all arranged in the elastic capsule.
The electronic sphygmomanometer automatic calibration system is characterized in that a plurality of hard patches which are uniformly arranged are arranged in the elastic capsule, and each hard patch is provided with one standard sensor.
The electronic sphygmomanometer automatic calibration system is characterized in that the standard air bag is provided with an inflator, and the inflator is electrically connected with the standard controller.
The electronic sphygmomanometer automatic calibration system is characterized in that a peristaltic pump is arranged on the elastic capsule.
The electronic sphygmomanometer automatic calibration system as described above, wherein the elastic capsule is filled with a liquid.
The electronic sphygmomanometer automatic calibration system as described above, wherein the calibration controller and the display controller have detachable data lines.
The electronic sphygmomanometer automatic calibration system as described above, wherein the hard patch is located between the elastic capsule and the standard sensor.
According to the invention, standard pressure parameters are generated and acquired through simulating the arm, the sphygmomanometer is calibrated through the calibration assembly, and the functional relation between the pressure sensor and the display controller in the sphygmomanometer is changed and updated, so that not only can the data error of the pressure sensor be eliminated, but also various measurement errors such as air bag aging, air pump mechanical loss and the like are integrated, the calibration precision is higher, and the whole sphygmomanometer is not required to be disassembled.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a cross-sectional structure of a simulated arm in a normal state according to an embodiment of the present invention;
FIG. 3 is a schematic view showing the overall structure of a section of a simulated arm measurement state according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an information processing principle according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, in the electronic sphygmomanometer automatic calibration system of the present embodiment, the existing sphygmomanometer needs to be changed, so that an adjustable data relationship exists between the pressure sensor and the display controller.
Specifically, as shown in fig. 1, the present embodiment includes: a sphygmomanometer and calibration assembly 3; the sphygmomanometer includes: a cuff 1 for detecting blood pressure and a display controller 2; the cuff 1 is internally provided with an air bag and a pressure sensor, and the air bag and the pressure sensor are electrically connected with the display controller 2; a preset data processing function is arranged between the display controller 2 and the pressure sensor; the display controller 2 is generally a programmable controller and is used for controlling the automatic inflation of the air bag and coordinating the working process of the whole sphygmomanometer.
In particular, the blood pressure monitor of the present embodiment generally includes: the sphygmomanometer comprises an air pump, an air release valve, a mechanical air release valve, a pressure sensor and an air bag in the cuff 1.
The sphygmomanometer of the present embodiment sets a k value and a b value as the conventional blood pressure measuring device after production and delivery, and sets an offset delta, and under normal conditions, the delta of the blood pressure measuring device after production and delivery is 0. The method comprises the steps of replacing the position of a cuff in blood pressure measuring equipment by equipment, ensuring that the connection relation among an air pump, a slow air release valve and a fast air release valve is unchanged, outputting a preset waveform curve, enabling the blood pressure value tested by the blood pressure measuring equipment to be s0/d0 when delta is 0, giving the preset waveform curve to the blood pressure measuring equipment when calibrated, enabling the blood pressure value tested by the blood pressure measuring equipment to be s1/d1, taking delta= (s0+d0-s 1-d 1)/2, setting delta into the blood pressure measuring equipment, enabling each pressure value of the later-stage blood pressure measuring equipment to be y=k+p+b+delta, and taking the pressure value as an input signal of a preset algorithm.
In the production process of the sphygmomanometer, the pressure sensor is calibrated, two points of 0mmHg and 200mmHg are usually used in the calibration process, 2,206 are respectively acquired by the pressure acquisition sensor, k=1.02 and b=2 are respectively obtained by using the four data, and delta is set to be 0. Then the accurate pressure value can be obtained by p=p0.02+2 for the pressure value collected by the pressure sensor in each later period, and the accurate pressure value is used for calculating a blood pressure algorithm, at the moment, if the sensor does not drift in the using process or the drift is small, a preset waveform curve is input according to the characteristics of the blood pressure algorithm, 120/80mmH can be obtained according to the waveform curve, and the electronic blood pressure meter obtains the result of 120/80 according to the preset waveform curve.
After the pressure sensor drifts after being used for a period of time, the pressure sensor drifts according to the preset 120/80 waveform curve and then is input into the electronic blood pressure meter, the result obtained by calculation of the electronic blood pressure meter is 123/85, delta= (120+80-123-85)/2= -4 is calculated, delta= -4 is set for the electronic blood pressure meter, when the electronic blood pressure meter calculates an accurate pressure value, p=p0 is used for 1.02+2-4, and in this way, the electronic blood pressure meter calculates the blood pressure value of 120/80 again, so that the calibration of the pressure sensor is completed.
As shown in fig. 2 and 3, the calibration assembly 3 of the present embodiment includes: calibrating the controller and simulating the arm; the simulated arm is internally provided with a standard air bag 4, the standard air bag 4 is provided with a plurality of standard sensors 6, and the standard sensors 6 are pressure sensors and are generally pressed ceramics. A plurality of standard sensors 6 are electrically connected with the calibration controller; the calibration controller comprehensively analyzes the pressure generated outside the simulated arm according to the data of the standard sensors. The calibration controller is electrically connected to the display controller 2.
Specifically, the calibration controller and the display controller 2 have detachable data lines 12. In the normal state, the sphygmomanometer does not use the calibration component, the data wire is not required to be connected, and the data wire 12 between the calibration controller and the display controller is only required to be connected when the sphygmomanometer is calibrated.
As shown in fig. 4, the simulated arm is inserted into the cuff, the standard sensor 6 obtains a pressure signal and transmits the signal to the calibration controller, the pressure sensor transmits its measurement result to the calibration controller through the display controller, and the calibration controller changes the data processing function.
In actual use, the working process is as follows:
1. the calibration controller sets the inflation pressure and inflates a standard air bag, which can simulate different arm thicknesses and simulate pulse beat through inflation and deflation.
2. The calibration controller detects and records standard data of the standard sensors under the current inflation pressure, and accurately measures the blood pressure of the current simulated arm according to the data returned by the plurality of standard sensors 6; meanwhile, a display controller in the sphygmomanometer starts a control cuff to automatically measure an air bag and a pressure sensor.
3. The calibration controller compares the standard data with the measured data of the sphygmomanometer, if the difference value after comparison is in the range needing to be regulated, the data processing function between the display controller and the pressure sensor can be changed through the data line, so that new delta is formed between the display controller and the pressure sensor, and the sphygmomanometer is calibrated
The invention has the following advantages:
first, do not need to disassemble the shell to the electronic sphygmomanometer, directly replace the position of arm in the sleeve area with the gas output pipeline of calibration subassembly, can accomplish the calibration of electronic sphygmomanometer fast, efficient, the operation is succinct.
Second, because the electronic sphygmomanometer does not need to be disassembled, the integrity of an internal gas circuit of the electronic sphygmomanometer is guaranteed, the reliability of the electronic sphygmomanometer after the calibration of the electronic sphygmomanometer can be improved, and the service cycle of the electronic sphygmomanometer is longer.
The electronic sphygmomanometer automatic calibration system of the present embodiment, the simulated arm further comprises: an elastic capsule 5 for wrapping the standard balloon; the plurality of standard sensors 6 are all disposed in the elastic capsule 5. The elastic capsule 5 is used for simulating the skin at the arm of a human body, has certain elasticity, can better buffer the inflation and deflation processes of the standard air bag, and is beneficial to improving the calibration precision.
Further, a plurality of hard patches 50 are uniformly arranged in the elastic capsule 5, and each hard patch 50 is provided with one standard sensor 6.
Meanwhile, the hard patch 50 is located between the elastic capsule 5 and the standard sensor 6. In this way, the standard sensor 6 can have a good environment for pressure measurement, and since one side is a hard patch, the pressure change can be measured more stably, and the measurement accuracy can be improved. And the hard patch can ensure that the standard sensor is not damaged under the air bag compression of an external cuff, and the abnormality of a measurement result is avoided.
In the electronic sphygmomanometer automatic calibration system of the present embodiment, the standard air bag 4 is provided with an inflator 41, and the inflator 41 is electrically connected with the standard controller. The standard air bag is provided with an air pipe 40, and the standard air bag is inflated and deflated through the air pipe 40 and an inflator 41, and the pulse and the blood pressure are simulated.
The electronic sphygmomanometer automatic calibration system of the present embodiment, wherein the peristaltic pump 51 is disposed on the elastic capsule 5. A liquid inlet pipe 52 is arranged between the elastic capsule 5 and the peristaltic pump 51. The elastic capsule 5 is filled with a liquid.
In this embodiment, in order to improve the detection and calibration accuracy as much as possible, since the inflation size of the standard air bag is not consistent in the process of simulating different arm thicknesses, the liquid in the elastic capsule needs to be adjusted to avoid measurement errors; meanwhile, after the elastic capsule is filled with liquid, pulsation of an internal standard air bag can be better transmitted to the surface of the elastic capsule, and errors and pressure loss caused by the adoption of the air bag are avoided.
According to the invention, standard pressure parameters are generated and acquired through simulating the arm, the sphygmomanometer is calibrated through the calibration assembly, and the functional relation between the pressure sensor and the display controller in the sphygmomanometer is changed and updated, so that not only can the data error of the pressure sensor be eliminated, but also various measurement errors such as air bag aging, air pump mechanical loss and the like are integrated, the calibration precision is higher, and the whole sphygmomanometer is not required to be disassembled.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. From the description of the above embodiments, it will be apparent to those skilled in the art that the above example methods may be implemented by means of a superposition of some variants plus the necessary general techniques; of course, the method can also be realized by simplifying some important technical features. Based on such understanding, the technical solution of the present invention essentially or partly contributes to the prior art is: overall methods and structures, and in combination with the methods described in the various embodiments of the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. An electronic sphygmomanometer automatic calibration system, comprising: a sphygmomanometer and a calibration assembly; the sphygmomanometer includes: a cuff for detecting blood pressure and a display controller; the cuff is internally provided with an air bag and a pressure sensor, and the air bag and the pressure sensor are electrically connected with the display controller; a preset data processing function is arranged between the display controller and the pressure sensor;
the calibration assembly includes: calibrating the controller and simulating the arm; a standard air bag is arranged in the simulated arm, a plurality of standard sensors are arranged on the standard air bag, and the standard sensors are electrically connected with the calibration controller; the calibration controller is electrically connected with the display controller;
the simulated arm is inserted into the cuff, the standard sensor obtains a pressure signal and transmits the signal to the calibration controller, the pressure sensor transmits a measurement result of the pressure sensor to the calibration controller through the display controller, and the calibration controller changes the data processing function;
the simulated arm further comprises: an elastic capsule for wrapping the standard balloon; the plurality of standard sensors are arranged in the elastic capsule;
a plurality of hard patches which are uniformly arranged are arranged in the elastic capsule, and each hard patch is provided with one standard sensor.
2. The electronic blood pressure meter automatic calibration system of claim 1, wherein an inflator is provided on the standard bladder, the inflator being electrically connected to the calibration controller.
3. The electronic sphygmomanometer automatic calibration system of claim 2, wherein the elastic capsule is provided with a peristaltic pump.
4. An electronic sphygmomanometer automatic calibration system according to any one of claims 1-3, wherein the elastic capsule is filled with a liquid.
5. An electronic blood pressure meter automatic calibration system according to any one of claims 1 to 3 wherein the calibration controller and the display controller have detachable data lines.
6. The electronic sphygmomanometer automatic calibration system of claim 1, wherein the rigid patch is located between the elastic capsule and the standard sensor.
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