技术领域technical field
本发明是涉及医疗设备检测技术领域，具体的说是一种测量电子血压计的动态血压模拟器。The invention relates to the technical field of medical equipment detection, in particular to a dynamic blood pressure simulator for measuring electronic sphygmomanometers.
背景技术Background technique
血压测量分为有创血压测量和无创血压测量。有创血压测量适用于各类危重病人、循环功能不全、体外循环下心内直视手术、大血管外科、脏器移植等可能术中大失血的手术；严重低血压、休克、其他血流流动不稳定疾病或者无创血压难以监测者。进行有创血压测量需经体表插入导管或监测探头到心腔或血管腔内直接测定。和临床常见的无创血压监测相比，有创血压可以提供连续、可靠、准确的监测数据，但有创血压测量实际操作时需要专业的器械和操作医务人员，测量过程复杂，不适合日常的血压测量，故日常血压的监测是无创血压测量，利用脉管内压力与血液阻断开通时刻所出现的血流变化体系，从体表测出相应的压力值，即检测脉管内血液阻断开通时刻闭塞性气袖远侧的脉搏变化情况，在体外采用各种转换方法及信号处理技术测量血压的方法。Blood pressure measurement is divided into invasive blood pressure measurement and non-invasive blood pressure measurement. Invasive blood pressure measurement is suitable for all kinds of critically ill patients, circulatory insufficiency, open-heart surgery under extracorporeal circulation, great vessel surgery, organ transplantation, etc. Patients with stable disease or difficult to monitor non-invasive blood pressure. Invasive blood pressure measurement needs to insert a catheter or a monitoring probe through the body surface into the heart cavity or blood vessel cavity for direct measurement. Compared with common clinical non-invasive blood pressure monitoring, invasive blood pressure can provide continuous, reliable and accurate monitoring data, but the actual operation of invasive blood pressure measurement requires professional equipment and operating medical personnel, the measurement process is complicated, and it is not suitable for daily blood pressure Measurement, so daily blood pressure monitoring is non-invasive blood pressure measurement, using the pressure in the vessel and the blood flow change system at the moment of blood blockage to measure the corresponding pressure value from the body surface, that is, to detect the occlusion at the moment of blood blockage in the vessel The method of measuring blood pressure in vitro using various conversion methods and signal processing techniques based on the pulse changes at the far side of the air cuff.
血压计是无创测量血压的仪器，血压计主要有听诊法血压计和示波法血压计。Sphygmomanometers are non-invasive instruments for measuring blood pressure. Sphygmomanometers mainly include auscultation sphygmomanometers and oscillometric sphygmomanometers.
听诊法(又叫人工柯氏音法)血压计主要有：水银血压计(压力计)、弹簧表式血压计、压光柱血压计、光显血压计、液晶血压计等。该方法通过袖带加气，压挤血管，使血流完全堵断，这时用听诊器听不到血管的波动声，然后慢慢放气直至听到脉搏声，此时血压为高压，即收缩压。继续放气，通过听诊器能听到强而有力的脉搏声，且慢慢变轻，直至听到很平稳较正常脉搏声，此时认为血管完全未受挤压，血压为低压，即舒张压。Auscultation method (also called artificial Korotkoff sound method) sphygmomanometers mainly include: mercury sphygmomanometer (manometer), spring gauge sphygmomanometer, pressure column sphygmomanometer, light display sphygmomanometer, liquid crystal sphygmomanometer, etc. In this method, the cuff is filled with air, and the blood vessel is squeezed to completely block the blood flow. At this time, the fluctuation sound of the blood vessel cannot be heard with a stethoscope, and then the air is slowly deflated until the pulse sound is heard. At this time, the blood pressure is high pressure, that is, contraction pressure. Continue to deflate, and you can hear a strong pulse through the stethoscope, and it will gradually become lighter until you hear a smoother and more normal pulse.
示波法又叫振荡法，它的原理是获取在放气过程中产生的振荡波，通过一定的算法换算得出血压值，间接进行测量，绝大多数的电子血压计均是采用示波原理来设计的。示波法是90年代发展起来的一种比较先进的电子测量方法，其原理如下：首先把袖带捆在手臂上，自动对袖带充气，到一定压力开始放气；当气压降到一定程度，血流就能通过血管，且有一定的振荡波；振荡波通过气管传播到机器里的压力传感器；压力传感器能实时检测到所测袖带内的压力及波动；逐渐放气，振荡波越来越大；继续放气，此时由于袖带与手臂的接触变松，因此压力传感器所检测的压力及波动越来越小。示波法不易受被测者脉搏信号强弱的影响，重复性好，准确性较高，但易受外界振动干扰，低压测量时易受放气速度和气管的刚性度影响。The oscillometric method is also called the oscillation method. Its principle is to obtain the oscillating wave generated during the deflation process, convert the blood pressure value through a certain algorithm, and measure it indirectly. Most electronic sphygmomanometers use the oscillometric principle. to design. The oscillometric method is a relatively advanced electronic measurement method developed in the 1990s. Its principle is as follows: First, tie the cuff on the arm, automatically inflate the cuff, and start to deflate when the pressure reaches a certain level; , the blood flow can pass through the blood vessel, and there is a certain oscillation wave; the oscillation wave propagates through the trachea to the pressure sensor in the machine; the pressure sensor can detect the pressure and fluctuation in the measured cuff in real time; gradually deflate, the oscillation wave becomes more Continue to deflate, at this time, because the contact between the cuff and the arm becomes loose, the pressure and fluctuation detected by the pressure sensor become smaller and smaller. The oscillometric method is not easily affected by the strength of the pulse signal of the subject, has good repeatability and high accuracy, but is easily disturbed by external vibration, and is easily affected by the deflation speed and the rigidity of the trachea during low-pressure measurement.
电子血压计的出现和普及，为血压计由医院进入家庭创造了有利条件。由于人身体的原因，造成血压在不同时间的异常，比如睡觉起床后，饭后，运动后血压都有不同。这时就更显得家庭血压计的重要，人们可以经常测量自己的血压，在不同的时间测量，也可以每天固定几个时段去测量，找到自己血压的规律，把这些数据给医生，更好地控制和治疗高血压。The emergence and popularization of electronic sphygmomanometers have created favorable conditions for sphygmomanometers to enter homes from hospitals. Due to the reasons of the human body, the blood pressure is abnormal at different times, such as after going to bed and getting up, after meals, and after exercise. At this time, the importance of home blood pressure monitors becomes even more important. People can measure their blood pressure frequently, at different times, or at fixed times every day to find out the rules of their blood pressure, and give these data to the doctor for better Control and treat high blood pressure.
血压计量值的准确性保障血压计使用可靠性，确保居民生活安全，同时作为医疗设备也需要定期进行检测，确保量值传递的可靠性。The accuracy of the blood pressure measurement value ensures the reliability of the use of the sphygmomanometer and ensures the safety of residents' lives. At the same time, as a medical device, it also needs to be tested regularly to ensure the reliability of the value transmission.
目前，我国的计量技术机构由于血压计的种类不同，对于不同种类的血压计进行检测的方法和设备均不同：水银血压计通过静态压力源向血压计输入静态压力，测量(0～300)mmHg内的静态压力；对于电子血压计血压检测部分主要分成两个部分：静态压力部分以及动态压力部分，其中静态压力部分仍是通过静态压力源的方式进行测量；动态压力部分，国内还没有相应的标准，一般采用无创血压模拟器(或称无创血压分析仪)。At present, due to the different types of sphygmomanometers in my country's measurement technology institutions, the methods and equipment for testing different types of sphygmomanometers are different: the mercury sphygmomanometer inputs static pressure to the sphygmomanometer through a static pressure source, and measures (0-300) mmHg The static pressure within; the blood pressure detection part of the electronic sphygmomanometer is mainly divided into two parts: the static pressure part and the dynamic pressure part, in which the static pressure part is still measured by the static pressure source; the dynamic pressure part, there is no corresponding Standard, generally using a non-invasive blood pressure simulator (or non-invasive blood pressure analyzer).
市场上现有的无创血压模拟器都是采用血压包络线重现法工作的，其可根据对平均压和相应的比例系数确定血压值的收缩压和舒张压。但是不同制造商生产的无创血压模拟器的比例系数是不同的，而且每种无创血压模拟器所模拟产生的血压脉搏波的变化趋势也不完全相同。基于上述情况，如果采用这种无创血压模拟器来评价无创血压测量的准确性将出现不同生产厂家生产的血压计测量血压不准的问题，而采用不同厂家生产的无创血压模拟器来检测同一个血压计的血压测量性能也会得到不同的检测结果。由此可见，虽然现有的无创血压模拟器可作为检测无创血压测量重复性的仪器，但还不属于完全的标准化检测设备，只是因为目前无其他更标准化更合理的检测设备可供选择。根据这种无创血压模拟器的检测原理，可以发现存在如下缺陷：(1)概念不清晰。这种血压模拟器不是以血压值的物理概念为基础，而是从电子血压计的测量过程出发，把电子血压计的测量中间过程还原给电子血压计，即它所给出的不是一个物理量而是一个过程，因此其测量概念是模糊的；(2)无法量值溯源。由于这种血压模拟器的工作过程是还原一个测量过程，它输出的值只是一个统计归纳的标称值，而不是标准值。因此，这些标称值是无法计算其准确度，这种检测装置实际上是把包络线回放给电子血压计，它所回放的包络线标称血压值，不能通过实验的方法求出或验证其不确定度，所以这种装置无法实现量值溯源；(3)无法完全地对电子血压计进行校准。这种血压模拟器在使用时通过管路与电子血压计直接连接，内置袖带或袖带只是作为气容，辅助自动排气阀控制排气速度。而电子血压计测量人体血压时，袖带是作为传感器的一部分参与感受小脉冲，在校准时把袖带的传输能力排除在外是不合适的。The existing non-invasive blood pressure simulators on the market all use the blood pressure envelope reproduction method, which can determine the systolic and diastolic blood pressure values according to the average pressure and the corresponding proportional coefficient. However, the scale coefficients of non-invasive blood pressure simulators produced by different manufacturers are different, and the change trends of blood pressure pulse waves simulated by each non-invasive blood pressure simulator are not completely the same. Based on the above situation, if this kind of non-invasive blood pressure simulator is used to evaluate the accuracy of non-invasive blood pressure measurement, there will be the problem of inaccurate blood pressure measurement by sphygmomanometers produced by different manufacturers, while using non-invasive blood pressure simulators produced by different manufacturers to test the same The blood pressure measurement performance of the sphygmomanometer will also get different test results. It can be seen that although the existing non-invasive blood pressure simulator can be used as an instrument for testing the repeatability of non-invasive blood pressure measurement, it is not completely standardized testing equipment, just because there is currently no other more standardized and reasonable testing equipment to choose from. According to the detection principle of this non-invasive blood pressure simulator, it can be found that there are the following defects: (1) The concept is not clear. This blood pressure simulator is not based on the physical concept of blood pressure, but starts from the measurement process of the electronic sphygmomanometer, and restores the intermediate process of the electronic sphygmomanometer to the electronic sphygmomanometer, that is, what it gives is not a physical quantity but It is a process, so its measurement concept is vague; (2) It cannot be traced back to its source. Since the working process of this blood pressure simulator is to restore a measurement process, the value it outputs is only a statistically induced nominal value rather than a standard value. Therefore, the accuracy of these nominal values cannot be calculated. This detection device actually replays the envelope to the electronic sphygmomanometer. Verify its uncertainty, so this device cannot realize the traceability of the value; (3) It is impossible to completely calibrate the electronic sphygmomanometer. This kind of blood pressure simulator is directly connected to the electronic sphygmomanometer through the pipeline when in use, and the built-in cuff or cuff is only used as a gas volume, assisting the automatic exhaust valve to control the exhaust speed. When the electronic sphygmomanometer measures the blood pressure of the human body, the cuff is used as a part of the sensor to participate in the sensing of small pulses. It is not appropriate to exclude the transmission capacity of the cuff during calibration.
由此可见，目前现有的这些血压模拟器虽然能用于无创自动测量血压计重复性的检测，但其检测技术是存在一定缺陷的，并不能真正完成整个血压计系统(包括袖带)的可量值溯源的标准血压波示值重复性检测。因此研制一款能够对电子血压计进行动态压力量值溯源的动态血压模拟器是亟待解决的问题，能够真实模拟人体动态血压，解决不同测量方法的电子血压计检测方法的统一，并对电子血压计的检测方法进行修订，对电子血压计的量值进行全面测量。It can be seen that although these existing blood pressure simulators can be used for the repeatability detection of non-invasive automatic measurement sphygmomanometers, there are certain defects in their detection technology, and they cannot really complete the inspection of the entire sphygmomanometer system (including the cuff). Repeatability detection of standard blood pressure wave value with traceable value. Therefore, it is an urgent problem to develop an ambulatory blood pressure simulator that can trace the source of the dynamic pressure value of the electronic sphygmomanometer. The detection method of the electronic sphygmomanometer is revised, and the value of the electronic sphygmomanometer is comprehensively measured.
发明内容Contents of the invention
本发明针对现有技术中的不足，提供一种测量电子血压计的动态血压模拟器，通过调整模拟器动态压力输出脉冲的脉宽、峰值大小，模拟不同人体血压动态压力，具有可溯源性检测，便携等优点。Aiming at the deficiencies in the prior art, the present invention provides a dynamic blood pressure simulator for measuring electronic sphygmomanometers. By adjusting the pulse width and peak value of the dynamic pressure output pulse of the simulator, different human blood pressure dynamic pressures can be simulated, which has traceability detection , Portability and other advantages.
一种测量电子血压计的动态血压模拟器，其特征在于：包括动态血压模拟控制器以及仿真上臂；所述的动态血压模拟控制器用来产生与人体相近似的周期性脉冲压力(正弦波压力)；所述的仿真上臂由与人体测量力学相近的仿真血管、仿真骨骼、仿真肌肉、仿真皮肤组成；所述的仿真上臂通过其仿真血管和动态血压模拟控制器连接，模拟人体血压真实的工作状况，待检测电子血压计的袖带绑在仿真上臂进行测量。A dynamic blood pressure simulator for measuring an electronic sphygmomanometer, characterized in that: it includes a dynamic blood pressure analog controller and a simulated upper arm; the dynamic blood pressure analog controller is used to generate periodic pulse pressure (sine wave pressure) similar to that of the human body The simulated upper arm is composed of simulated blood vessels, simulated bones, simulated muscles and simulated skin which are similar to anthropometric mechanics; the simulated upper arm is connected with the simulated blood vessel and dynamic blood pressure analog controller to simulate the real working condition of human blood pressure , the cuff of the electronic sphygmomanometer to be tested is tied to the upper arm of the simulation for measurement.
所述的动态血压模拟控制器，主要由压力发生器和压力控制器组成，所述的压力发生器是动态压力的机械发生部分，和所述的压力控制器具有电气连接；所述的压力控制器是精确控制动态压力机械发生的控制部分，并测量管路中压力的大小，根据反馈段信号进行调整。The dynamic blood pressure analog controller is mainly composed of a pressure generator and a pressure controller, the pressure generator is a mechanical part of dynamic pressure, and is electrically connected to the pressure controller; the pressure controller The controller is the control part that precisely controls the occurrence of dynamic pressure machinery, and measures the pressure in the pipeline, and adjusts it according to the signal of the feedback section.
所述的压力发生器由伺服电机驱动器、伺服电机编码器、伺服电机转子、凸轮机构、微型活塞压力泵组成。The pressure generator is composed of a servo motor driver, a servo motor encoder, a servo motor rotor, a cam mechanism, and a miniature piston pressure pump.
所述的伺服电机驱动器、伺服电机编码器、伺服电机转子、凸轮机构、微型活塞压力泵具有机械连接；所述的伺服电机驱动器和所述的伺服电机编码器具有电气连接，所述的伺服电机编码器能够通过控制所述的伺服电机驱动器达到控制所述的伺服电机转子的转动速度和转动方向；所述的伺服电机转子转动通过带动凸轮机构带动所述的微型活塞压力泵的活塞运动，产生一个脉冲压力。Described servo motor driver, servo motor encoder, servo motor rotor, cam mechanism, miniature piston pressure pump have mechanical connection; Described servo motor driver and described servo motor encoder have electrical connection, and described servo motor The encoder can control the rotation speed and direction of rotation of the servo motor rotor by controlling the servo motor driver; the rotation of the servo motor rotor drives the piston movement of the miniature piston pressure pump by driving the cam mechanism to generate A pulse pressure.
所述的压力控制器主要有九个组成模块：微控制器模块、模数转换模块、运算放大模块、滤波模块、温度传感器模块、气压传感器模块、压力传感器模块、液晶屏以及电源模块；其中，所述的温度传感器模块用于采集当前环境温度，并通过滤波模块、运算放大模块、模数转换模块和微控制器模块的输入端连接；气压传感器模块用于采集当前环境大气压，并通过滤波模块、运算放大模块、模数转换模块和微控制器模块的输入端连接；压力传感器模块用于采集管路中压力，并通过滤波模块、运算放大模块、模数转换模块和微控制器模块的输入端连接；所述的滤波模块、运算放大器模块、模数转换模块为信号处理电路模块，主要完成采集数据的滤波、放大、转换功能，最终将采集的模拟信号转化成电压信号接入微控制器模块的输入端，并通过与微控制器模块输出端连接的液晶屏进行数据的显示；所述的电源模块通过微控制器模块设有的压力转换电路，给动态血压模拟控制器各部分提供电源。The pressure controller mainly has nine components: a microcontroller module, an analog-to-digital conversion module, an operational amplification module, a filter module, a temperature sensor module, an air pressure sensor module, a pressure sensor module, a liquid crystal screen and a power supply module; wherein, The temperature sensor module is used to collect the current ambient temperature, and is connected to the input terminals of the filter module, the operational amplification module, the analog-to-digital conversion module and the microcontroller module; the air pressure sensor module is used to collect the current ambient atmospheric pressure, and is connected to the , operational amplification module, analog-to-digital conversion module and microcontroller module input connection; the pressure sensor module is used to collect the pressure in the pipeline, and through the input of the filter module, operational amplification module, analog-to-digital conversion module and microcontroller module terminal connection; the filter module, operational amplifier module, and analog-to-digital conversion module are signal processing circuit modules, which mainly complete the filtering, amplification, and conversion functions of the collected data, and finally convert the collected analog signal into a voltage signal for access to the microcontroller The input end of the module, and display data through the LCD screen connected to the output end of the microcontroller module; the power supply module provides power to each part of the dynamic blood pressure analog controller through the pressure conversion circuit provided by the microcontroller module .
所述的仿真上臂实际上是一个人体模拟手臂，主要由仿真骨骼、仿真血管、仿真肌肉、仿真皮肤组成；其中，所述的仿真上臂设有长约300mm，外径约为60mm的硬塑料管模拟人体肱骨的仿真骨骼；所述的仿真肌肉为软性填充材料，与所述的硅橡胶材料制作而成的仿真皮肤依次附着在所述的仿真骨骼上；所述的仿真血管为硅胶管，附着在所述的仿真骨骼和所述的仿真肌肉之间。The simulated upper arm is actually a human simulated arm, mainly composed of simulated bones, simulated blood vessels, simulated muscles, and simulated skin; wherein, the simulated upper arm is provided with a hard plastic tube with a length of about 300mm and an outer diameter of about 60mm The simulated skeleton of the human humerus is simulated; the simulated muscle is a soft filling material, and the simulated skin made of the silicone rubber material is attached to the simulated bone in sequence; the simulated blood vessel is a silicone tube, Attached between the simulated bones and the simulated muscles.
本发明的有益效果是：本模拟器根据人体真实的血压波形，将模拟血压压力分解成静态压力部分和动态压力部分，将静态压力作为基础压力，通过静态压力源的方式进行静态压力的测量，该方法是JJG 692-2010《无创自动测量血压计检定规程》中提及的，顾在这里不再作具体介绍。通过先进行基础压力即测量的静态压力的加载，模拟人体静态压力下的血压状态，结合设定的模拟血压值，计算达到动态血压值需要的输出的峰值和压力脉宽，调节动态血压模拟控制器的压力发生器部分的伺服电机编码器控制伺服电机驱动器驱动伺服电机转子转动，从而带动微型活塞压力泵的活塞行程，可以模拟出动态脉冲压力，将这个脉冲压力加载在静态压力上，即可模拟人体真实压力。The beneficial effects of the present invention are: the simulator decomposes the simulated blood pressure pressure into a static pressure part and a dynamic pressure part according to the real blood pressure waveform of the human body, and uses the static pressure as the base pressure to measure the static pressure by means of a static pressure source. This method is mentioned in JJG 692-2010 "Verification Regulations for Non-Invasive Automatic Measuring Sphygmomanometer", and Gu will not introduce it in detail here. By first loading the base pressure, which is the measured static pressure, to simulate the blood pressure state under the static pressure of the human body, combined with the set simulated blood pressure value, calculate the output peak value and pressure pulse width required to achieve the dynamic blood pressure value, and adjust the dynamic blood pressure analog control The servo motor encoder in the pressure generator part of the generator controls the servo motor driver to drive the rotor of the servo motor to rotate, thereby driving the piston stroke of the miniature piston pressure pump, which can simulate the dynamic pulse pressure, and load the pulse pressure on the static pressure. Simulate the real pressure of the human body.
附图说明Description of drawings
下面结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
图1为本发明的结构原理示意图；Fig. 1 is the structural principle schematic diagram of the present invention;
图2为本发明动态血压模拟控制器原理框图。Fig. 2 is a functional block diagram of the dynamic blood pressure analog controller of the present invention.
图1中：1、动态血压模拟控制器；2、仿真上臂；3、仿真血管；4、仿真骨骼；5、仿真肌肉；6、仿真皮肤；7、袖带；8、电子血压计。In Fig. 1: 1, dynamic blood pressure simulation controller; 2, simulated upper arm; 3, simulated blood vessel; 4, simulated bone; 5, simulated muscle; 6, simulated skin; 7, cuff; 8, electronic sphygmomanometer.
图2中：9、压力发生器；10、压力控制器；11、伺服电机驱动器；12、伺服电机编码器；13、伺服电机转子；14、凸轮机构；15、微型活塞压力泵；16、微控制器模块；17、模数转换模块；18、运算放大模块；19、滤波模块；20、温度传感器模块；21、气压传感器模块；22、压力传感器模块；23、液晶屏；24、电源模块。In Fig. 2: 9, pressure generator; 10, pressure controller; 11, servo motor driver; 12, servo motor encoder; 13, servo motor rotor; 14, cam mechanism; 15, miniature piston pressure pump; 16, micro Controller module; 17. Analog-to-digital conversion module; 18. Operational amplification module; 19. Filter module; 20. Temperature sensor module; 21. Air pressure sensor module; 22. Pressure sensor module; 23. LCD screen; 24. Power supply module.
具体实施方式Detailed ways
如图1所示：一种测量电子血压计的动态血压模拟器，其特征在于：包括动态血压模拟控制器(1)以及仿真上臂(2)；所述的动态血压模拟控制器(1)用来产生与人体相近似的周期性脉冲压力(正弦波压力)；所述的仿真上臂(2)由与人体测量力学相近的仿真血管(3)、仿真骨骼(4)、仿真肌肉(5)、仿真皮肤(6)组成；所述的仿真上臂(2)通过其设有的仿真血管(3)和动态血压模拟控制器(1)连接，模拟人体血压真实的工作状况，待检测电子血压计(8)的袖带(7)绑在仿真上臂(2)进行测量。As shown in Figure 1: a kind of dynamic blood pressure simulator of measuring electronic sphygmomanometer, it is characterized in that: comprise dynamic blood pressure simulation controller (1) and simulation upper arm (2); Described dynamic blood pressure simulation controller (1) uses to produce a periodic pulse pressure (sine wave pressure) similar to the human body; the simulated upper arm (2) is composed of simulated blood vessels (3), simulated bones (4), simulated muscles (5), The simulation skin (6) is composed of; the simulation upper arm (2) is connected with the simulation blood vessel (3) provided with it and the dynamic blood pressure simulation controller (1), to simulate the real working condition of human blood pressure, and the electronic sphygmomanometer to be detected ( 8) The cuff (7) is tied to the simulated upper arm (2) for measurement.
如图2所示的一种测量电子血压计的动态血压模拟器，所述的动态血压模拟控制器(1)主要由压力发生器(9)和压力控制器(10)组成，所述的压力发生器(9)是动态压力的机械发生部分，和所述的压力控制器(10)具有电气连接；所述的压力控制器(10)是精确控制动态压力机械发生的控制部分，并测量管路中压力的大小，根据反馈段信号进行调整。As shown in Figure 2, a dynamic blood pressure simulator for measuring an electronic sphygmomanometer, the dynamic blood pressure analog controller (1) is mainly composed of a pressure generator (9) and a pressure controller (10), and the pressure The generator (9) is the mechanical generation part of the dynamic pressure, and is electrically connected with the pressure controller (10); the pressure controller (10) is the control part that precisely controls the mechanical generation of the dynamic pressure, and measures the The pressure in the road is adjusted according to the signal of the feedback section.
如图2所示的一种测量电子血压计的动态血压模拟器，所述的压力发生器(9)由伺服电机驱动器(11)、伺服电机编码器(12)、伺服电机转子(13)、凸轮机构(14)以及微型活塞压力泵(15)组成；所述的伺服电机驱动器(11)、伺服电机编码器(12)、伺服电机转子(13)、凸轮机构(14)、微型活塞压力泵(15)具有机械连接；所述的伺服电机驱动器(11)和伺服电机编码器(12)具有电气连接，所述的伺服电机编码器(12)能够通过控制所述的伺服电机驱动器(11)达到控制所述的伺服电机转子(13)的转动速度和转动方向；所述的伺服电机转子(13)转动通过带动凸轮机构(14)带动所述的微型活塞压力泵(15)的活塞气缸运动，产生一个脉冲压力。As shown in Figure 2, a dynamic blood pressure simulator for measuring an electronic sphygmomanometer, the pressure generator (9) consists of a servo motor driver (11), a servo motor encoder (12), a servo motor rotor (13), Cam mechanism (14) and miniature piston pressure pump (15) are formed; Described servomotor driver (11), servomotor encoder (12), servomotor rotor (13), cam mechanism (14), miniature piston pressure pump (15) have mechanical connection; Described servo motor driver (11) and servo motor encoder (12) have electric connection, and described servo motor encoder (12) can control described servo motor driver (11) Reach and control the rotational speed and the rotational direction of described servomotor rotor (13); Described servomotor rotor (13) rotates and drives the piston cylinder movement of described miniature piston pressure pump (15) by driving cam mechanism (14) , generating a pulse pressure.
如图2所示的一种测量电子血压计的动态血压模拟器，所述的压力控制器(10)主要有九个组成模块：微控制器模块(16)、模数转换模块(17)、运算放大模块(18)、滤波模块(19)、温度传感器模块(20)、气压传感器模块(21)、压力传感器模块(22)、液晶屏(23)以及电源模块(24)；其中，所述的温度传感器模块(20)用于采集当前环境温度，并通过滤波模块(19)、运算放大模块(18)、模数转换模块(17)和微控制器模块(16)的输入端连接；气压传感器模块(21)用于采集当前环境大气压，并通过滤波模块(19)、运算放大模块(18)、模数转换模块(17)和微控制器模块(16)的输入端连接；压力传感器模块用于采集管路中压力，并通过滤波模块(19)、运算放大模块(18)、模数转换模块(17)和微控制器模块(16)的输入端连接；所述的滤波模块(19)、运算放大器模块(18)、模数转换模块(17)为信号处理电路模块，主要完成采集数据的滤波、放大、转换功能，最终将采集的模拟信号转化成电压信号接入微控制器模块(16)的输入端，并通过接入微控制器模块(16)输出端的液晶屏(23)进行数据的显示；所述的电源模块(24)通过微控制器模块(16)设有的电源转换电路，给动态血压模拟控制器各部分提供电源。A kind of dynamic blood pressure simulator of measuring electronic sphygmomanometer as shown in Figure 2, described pressure controller (10) mainly has nine component modules: microcontroller module (16), analog-to-digital conversion module (17), Operational amplification module (18), filter module (19), temperature sensor module (20), air pressure sensor module (21), pressure sensor module (22), liquid crystal screen (23) and power supply module (24); Wherein, the The temperature sensor module (20) is used to collect the current ambient temperature, and is connected to the input terminals of the filter module (19), the operational amplification module (18), the analog-to-digital conversion module (17) and the microcontroller module (16); The sensor module (21) is used to collect the current ambient atmospheric pressure, and is connected to the input terminals of the filter module (19), the operational amplification module (18), the analog-to-digital conversion module (17) and the microcontroller module (16); the pressure sensor module It is used to collect the pressure in the pipeline, and is connected to the input end of the filter module (19), the operational amplifier module (18), the analog-to-digital conversion module (17) and the microcontroller module (16); the filter module (19) ), the operational amplifier module (18), and the analog-to-digital conversion module (17) are signal processing circuit modules, which mainly complete the filtering, amplification, and conversion functions of the collected data, and finally convert the collected analog signal into a voltage signal for access to the microcontroller module (16) input end, and carry out the display of data by the liquid crystal screen (23) of access microcontroller module (16) output; Described power supply module (24) is provided with the power supply by microcontroller module (16) The conversion circuit supplies power to each part of the dynamic blood pressure analog controller.
在整个控制过程中，伺服电机转子(13)带动凸轮机构(14)转动，带动微型活塞压力泵(15)的活塞在泵中运动，压缩管路中的气体，从而改变仿真血管(3)中的压力，这个动态压力由压缩体积▽V和压缩时间共同决定，用压力峰值Pmax和压力脉宽τ建立数学模型来表示这个动态压力：During the entire control process, the servo motor rotor (13) drives the cam mechanism (14) to rotate, drives the piston of the miniature piston pressure pump (15) to move in the pump, compresses the gas in the pipeline, and thus changes the pressure in the simulated blood vessel (3). The pressure, this dynamic pressure is determined by the compression volume ▽V and the compression time, using the pressure peak value Pmax and the pressure pulse width τ to establish a mathematical model to express this dynamic pressure:
Pmax＝f(▽V,τ)Pmax ＝f(▽V,τ)
由于微型活塞压力泵(15)的活塞的面积不变，因此气体体积的变化就与活塞运动的行程▽l成正比。活塞压缩的介质是气体，且容易受到环境温度和大气压的影响，在控制过程中需要对测量环境中温度和压力进行修正，动态压力为：Because the area of the piston of miniature piston pressure pump (15) is constant, so the change of gas volume is just proportional to the stroke ▽ l of piston motion. The medium compressed by the piston is gas, and it is easily affected by the ambient temperature and atmospheric pressure. During the control process, the temperature and pressure in the measurement environment need to be corrected. The dynamic pressure is:
Pmax＝f(▽l,τ)*k(p,t)Pmax ＝f(▽l,τ)*k(p,t)
式中k(p,t)为环境温度和压力的修正系数。从式中可以看出动态压力可通过控制微型活塞压力泵(15)的活塞行程和伺服电机转子(13)的转速来控制，因此这个动态压力是可以复现的值，可以进行溯源的。where k(p, t) is the correction factor for ambient temperature and pressure. It can be seen from the formula that the dynamic pressure can be controlled by controlling the piston stroke of the miniature piston pressure pump (15) and the rotating speed of the servo motor rotor (13), so this dynamic pressure is a reproducible value and can be traced back.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910891820.7ACN110522431A (en) | 2019-09-27 | 2019-09-27 | A dynamic blood pressure simulator for measuring electronic sphygmomanometer |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910891820.7ACN110522431A (en) | 2019-09-27 | 2019-09-27 | A dynamic blood pressure simulator for measuring electronic sphygmomanometer |
| Publication Number | Publication Date |
|---|---|
| CN110522431Atrue CN110522431A (en) | 2019-12-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910891820.7APendingCN110522431A (en) | 2019-09-27 | 2019-09-27 | A dynamic blood pressure simulator for measuring electronic sphygmomanometer |
| Country | Link |
|---|---|
| CN (1) | CN110522431A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297345A (en)* | 2020-03-25 | 2020-06-19 | 中国科学技术大学 | Calibration device and method for multifunctional physiological parameter detection instrument |
| CN111616692A (en)* | 2020-05-14 | 2020-09-04 | 李永生 | Extrusion type execution system of noninvasive blood pressure simulator and control method thereof |
| CN114795158A (en)* | 2022-04-22 | 2022-07-29 | 深圳市奥极医疗科技有限公司 | A kind of simulator control method and related device |
| CN115969343A (en)* | 2022-12-12 | 2023-04-18 | 上海市计量测试技术研究院 | A dynamic traceability device for an oscillometric electronic sphygmomanometer |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267502A (en)* | 1999-03-23 | 2000-09-27 | 广东省医疗器械研究所 | Electronic tonometer detecting method and equipment |
| CN1985755A (en)* | 2005-12-20 | 2007-06-27 | 王卫东 | Non-invasive blood pressure measuring analyzer |
| CN103932692A (en)* | 2014-05-13 | 2014-07-23 | 北京新兴阳升科技有限公司 | Non-invasive blood pressure simulator based on Korotkoff sound production mechanism |
| CN109949677A (en)* | 2019-03-26 | 2019-06-28 | 长春大学 | A vascular field simulation device |
| CN210811009U (en)* | 2019-09-27 | 2020-06-23 | 南京嘉恒仪器设备有限公司 | Dynamic blood pressure simulator for measuring electronic sphygmomanometer |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267502A (en)* | 1999-03-23 | 2000-09-27 | 广东省医疗器械研究所 | Electronic tonometer detecting method and equipment |
| CN1985755A (en)* | 2005-12-20 | 2007-06-27 | 王卫东 | Non-invasive blood pressure measuring analyzer |
| CN103932692A (en)* | 2014-05-13 | 2014-07-23 | 北京新兴阳升科技有限公司 | Non-invasive blood pressure simulator based on Korotkoff sound production mechanism |
| CN109949677A (en)* | 2019-03-26 | 2019-06-28 | 长春大学 | A vascular field simulation device |
| CN210811009U (en)* | 2019-09-27 | 2020-06-23 | 南京嘉恒仪器设备有限公司 | Dynamic blood pressure simulator for measuring electronic sphygmomanometer |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297345A (en)* | 2020-03-25 | 2020-06-19 | 中国科学技术大学 | Calibration device and method for multifunctional physiological parameter detection instrument |
| CN111616692A (en)* | 2020-05-14 | 2020-09-04 | 李永生 | Extrusion type execution system of noninvasive blood pressure simulator and control method thereof |
| CN114795158A (en)* | 2022-04-22 | 2022-07-29 | 深圳市奥极医疗科技有限公司 | A kind of simulator control method and related device |
| CN115969343A (en)* | 2022-12-12 | 2023-04-18 | 上海市计量测试技术研究院 | A dynamic traceability device for an oscillometric electronic sphygmomanometer |
| Publication | Publication Date | Title |
|---|---|---|
| CN110522431A (en) | A dynamic blood pressure simulator for measuring electronic sphygmomanometer | |
| US6338719B1 (en) | Method and system for detecting vascular conditions using an occlusive arm cuff plethysmograph | |
| CA1333096C (en) | Noninvasive continuous monitor of arterial blood pressure waveform | |
| CN104427928B (en) | For determining system, method and the relevant device of physiological parameter | |
| CN1698536A (en) | Cuffless continuous blood pressure measurement method with automatic compensation | |
| CN104042200B (en) | A kind of non-invasive monitoring devices and methods therefor of arteriotony by shooting | |
| US6099476A (en) | Blood pressure measurement system | |
| CN101032395A (en) | Blood pressure measurement method based on characteristic parameters of photoplethysmography signal in period domain | |
| US5027641A (en) | Oscillometric non-invasive blood pressure simulator | |
| CN106923807A (en) | Based on the method and system that temperature is corrected to blood pressure measurement | |
| Winsor | The segmental plethysmograph: A description of the instrument | |
| US7819811B2 (en) | Detecting medical conditions with noninvasive body probes | |
| US20240398233A1 (en) | Determining a tissue property of a body part | |
| CN108742574B (en) | Noninvasive continuous blood pressure measuring instrument | |
| CN210811009U (en) | Dynamic blood pressure simulator for measuring electronic sphygmomanometer | |
| CN211094071U (en) | Wrist electronic sphygmomanometer calibrating device | |
| CN1985755A (en) | Non-invasive blood pressure measuring analyzer | |
| Wang et al. | Design of a non-invasive blood pressure simulator based on oscillographic method | |
| CN110420018B (en) | Wrist type electronic sphygmomanometer calibrating device | |
| Tanvar | Arm simulator for blood pressure measurement | |
| CN210167013U (en) | Blood pressure measurement examination equipment | |
| Krausman | Methods and procedures for monitoring and recording blood pressure. | |
| Johnston et al. | Noninvasive measurement of systolic pressure slope: a reliable index of the presence of peripheral arterial occlusive disease | |
| RU2328210C2 (en) | Method and device for tonometer calibration using patient body simulator | |
| Ginanjar et al. | Development of an automatic sphygmomanometer simulator based on small volume displacement pressure generation |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20191203 |