CN115931215B - A pressure sensor calibration system based on dynamic compensation - Google Patents
A pressure sensor calibration system based on dynamic compensation Download PDFInfo
- Publication number
- CN115931215B CN115931215B CN202211451204.8A CN202211451204A CN115931215B CN 115931215 B CN115931215 B CN 115931215B CN 202211451204 A CN202211451204 A CN 202211451204A CN 115931215 B CN115931215 B CN 115931215B
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- tank
- flow
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 41
- 230000008569 process Effects 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims description 38
- 238000013480 data collection Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 2
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 2
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 2
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 2
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Measuring Fluid Pressure (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
Description
技术领域Technical Field
本发明属于压力传感器标定技术领域，涉及一种基于动态补偿的压力传感器标定系统。The invention belongs to the technical field of pressure sensor calibration, and relates to a pressure sensor calibration system based on dynamic compensation.
背景技术Background technique
具有推进变轨功能的卫星一般均配置有推进系统。卫星在轨期间的推进燃料剩余量通过推进系统的压力传感器进行测量。为了验证卫星压力传感器与实际压力的对应关系，需要采用地面校准压力计对卫星上的压力传感器进行标定。压力标定量级为兆帕(MPa)级，精度等级为千帕级。同时，为验证压力传感器在正向及反向过程中的差异，标定过程一般包括升压过程和降压过程。当前压力标定采用普通压力控制台进行控制，主要手段为调节控制台的减压器以及针阀开度，并采用外置在充气管道上的精密压力计进行星上压力数据读取。充气过程标定时，通过控制台将气源气体气压减至规定压力值附近，通过后端的进星阀门将气体充至星内，至规定压力后停止充气，等待星内压力降压，稳定后进行多次补压，直至压力达到要求值。在放气过程标定时，通过进星阀门泄放星内气体，达到规定压力后停止放气，星内压力稳定后进行再次补放，直至压力达到要求值。在星内压力值稳定在要求范围内后，读取精密压力计压力以及星上压力传感器电压值，进行压力标定。普通压力控制台压力控制精度低，同时，由于压力稳定周期长，且需多次压力稳定，整体所需时间较长，效率较低。Satellites with propulsion and orbit change functions are generally equipped with propulsion systems. The remaining amount of propulsion fuel during the satellite's in-orbit period is measured by the pressure sensor of the propulsion system. In order to verify the correspondence between the satellite pressure sensor and the actual pressure, it is necessary to calibrate the pressure sensor on the satellite using a ground-calibrated pressure gauge. The pressure calibration level is megapascal (MPa) level, and the accuracy level is kilopascal level. At the same time, in order to verify the difference between the pressure sensor in the forward and reverse processes, the calibration process generally includes a pressure increase process and a pressure reduction process. At present, the pressure calibration is controlled by an ordinary pressure console. The main means are to adjust the pressure reducer and needle valve opening of the console, and use a precision pressure gauge externally mounted on the inflation pipeline to read the pressure data on the satellite. During the inflation process calibration, the gas source gas pressure is reduced to near the specified pressure value through the console, and the gas is filled into the satellite through the rear-end inlet valve. After reaching the specified pressure, the inflation is stopped, and the pressure in the satellite is waited for to drop. After stabilization, multiple pressure supplements are performed until the pressure reaches the required value. During the deflation process calibration, the gas in the satellite is released through the satellite inlet valve. When the specified pressure is reached, the deflation is stopped. After the pressure in the satellite is stable, the deflation is performed again until the pressure reaches the required value. After the pressure value in the satellite is stable within the required range, the pressure of the precision pressure gauge and the voltage value of the pressure sensor on the satellite are read to calibrate the pressure. The pressure control accuracy of the ordinary pressure control console is low. At the same time, due to the long pressure stabilization cycle and the need for multiple pressure stabilization, the overall time required is long and the efficiency is low.
发明内容Summary of the invention
本发明解决的技术问题是：克服现有技术的不足，提出一种基于动态补偿的压力传感器标定系统，用于卫星系统级压力传感器标定过程中压力的精确设置与维持，提高压力标定的准确性及标定效率The technical problem solved by the present invention is to overcome the shortcomings of the prior art and propose a pressure sensor calibration system based on dynamic compensation, which is used for the precise setting and maintenance of pressure during the calibration of satellite system-level pressure sensors, and improves the accuracy and efficiency of pressure calibration.
本发明解决技术的方案是：The solution of the present invention is:
一种基于动态补偿的压力传感器标定系统，包括气源阀、减压阀、快充阀、微流量充气调节阀、进星表阀、进星阀、快排阀、微流量排气调节阀、排气截止阀、气罐组、充气罐阀、排气罐阀、过滤器1-过滤器7、气源压力表、减压压力表和进星压力表；A pressure sensor calibration system based on dynamic compensation, comprising an air source valve, a pressure reducing valve, a quick filling valve, a micro-flow charging regulating valve, an inlet star gauge valve, an inlet star valve, a quick exhaust valve, a micro-flow exhaust regulating valve, an exhaust stop valve, an air tank group, an air filling tank valve, an exhaust tank valve, filters 1-7, an air source pressure gauge, a pressure reducing pressure gauge and an inlet star pressure gauge;
其中，过滤器1的一端与外部气源连接；过滤器1的另一端与气源阀的一端连接；Among them, one end of the filter 1 is connected to the external air source; the other end of the filter 1 is connected to one end of the air source valve;
气源阀的另一端分为2路，其中1路依次与过滤器5、气源压力表连接；另1路与减压阀的一端连接；The other end of the air source valve is divided into two paths, one of which is connected to the filter 5 and the air source pressure gauge in sequence; the other is connected to one end of the pressure reducing valve;
减压阀的另一端分为4路；第1路依次与过滤器6、减压压力表连接，第2路与快充阀的一端连接，第3路与微流量充气调节阀的一端连接，第4路与充气罐阀的一端连接；The other end of the pressure reducing valve is divided into 4 paths; the first path is connected to the filter 6 and the pressure reducing pressure gauge in sequence, the second path is connected to one end of the fast filling valve, the third path is connected to one end of the micro-flow inflation regulating valve, and the fourth path is connected to one end of the inflation tank valve;
快充阀的另一端分为3路，第1路依次与过滤器7、进星表阀、进星压力表连接；第2路依次与过滤器3、进星阀、外部卫星连接；第3路与过滤器4的一端连接；The other end of the fast-fill valve is divided into three paths. The first path is connected to the filter 7, the inlet star gauge valve, and the inlet star pressure gauge in sequence; the second path is connected to the filter 3, the inlet star valve, and the external satellite in sequence; the third path is connected to one end of the filter 4;
微流量充气调节阀的另一端分为3路，第1路依次与过滤器7、进星表阀、进星压力表连接；第2路依次与过滤器3、进星阀、外部卫星连接；第3路与过滤器4的一端连接；The other end of the micro-flow inflation regulating valve is divided into three paths. The first path is connected to the filter 7, the inlet star gauge valve, and the inlet star pressure gauge in sequence; the second path is connected to the filter 3, the inlet star valve, and the external satellite in sequence; the third path is connected to one end of the filter 4;
过滤器4的另一端分别与快排阀的一端、微流量排气调节阀的一端连接；The other end of the filter 4 is connected to one end of the quick exhaust valve and one end of the micro-flow exhaust regulating valve respectively;
快排阀的另一端分别与微流量排气调节阀的另一端、排气截止阀的一端、排气罐阀的一端连接；排气截止阀的另一端排空；The other end of the quick exhaust valve is respectively connected to the other end of the micro-flow exhaust regulating valve, one end of the exhaust stop valve, and one end of the exhaust tank valve; the other end of the exhaust stop valve is emptied;
微流量排气调节阀的另一端分别与快排阀的另一端、排气截止阀的一端、排气罐阀的一端连接；The other end of the micro-flow exhaust regulating valve is respectively connected to the other end of the quick exhaust valve, one end of the exhaust stop valve, and one end of the exhaust tank valve;
排气罐阀的另一端分别与充气罐阀的另一端、过滤器2的一端连接；The other end of the exhaust tank valve is connected to the other end of the charging tank valve and one end of the filter 2 respectively;
充气罐阀的另一端分别与排气罐阀的另一端、过滤器2的一端连接；The other end of the charging tank valve is connected to the other end of the exhaust tank valve and one end of the filter 2 respectively;
过滤器2的另一端与气罐组连接；The other end of the filter 2 is connected to the gas tank group;
系统中各表、阀门之间通过管路连接。Each meter and valve in the system is connected by pipelines.
在上述的一种基于动态补偿的压力传感器标定系统，所有阀门均采用手动控制阀门；其中，气源阀、进星表阀、进星阀、排气截止阀、充气罐阀、排气罐阀为针阀；减压阀为输出压力0-4MPa的高精度调压阀；微流量充气调节阀、微流量排气调节阀为可调流量为0-1SLM的可调微流量调节阀；快充阀、快排阀均为球阀；所述气源压力表为0-25MPa普通精度电子压力表；减压压力表为0-10MPa普通精度电子压力表；进星压力表为分辨率不低于100Pa的精密电子压力计；所述过滤器1-过滤器7均采用过滤精度优于10um的金属滤网型过滤器；所述气罐组包括3个气罐，每个气罐的容积为500mL，气罐之间采用阀门、管路进行连接。In the above-mentioned pressure sensor calibration system based on dynamic compensation, all valves are manually controlled valves; among them, the gas source valve, star inlet valve, star inlet valve, exhaust stop valve, gas filling tank valve, and exhaust tank valve are needle valves; the pressure reducing valve is a high-precision pressure regulating valve with an output pressure of 0-4MPa; the micro-flow gas filling regulating valve and the micro-flow exhaust regulating valve are adjustable micro-flow regulating valves with an adjustable flow of 0-1SLM; the fast filling valve and the quick exhaust valve are both ball valves; the gas source pressure gauge is a 0-25MPa ordinary precision electronic pressure gauge; the pressure reducing pressure gauge is a 0-10MPa ordinary precision electronic pressure gauge; the star inlet pressure gauge is a precision electronic pressure gauge with a resolution of not less than 100Pa; the filters 1-7 all use metal filter type filters with a filtration accuracy better than 10um; the gas tank group includes 3 gas tanks, each with a volume of 500mL, and the gas tanks are connected by valves and pipelines.
在上述的一种基于动态补偿的压力传感器标定系统，所述压力标定过程分为充气过程压力标定和放气过程压力标定；In the above-mentioned pressure sensor calibration system based on dynamic compensation, the pressure calibration process is divided into pressure calibration during inflation and pressure calibration during deflation;
充气过程压力标定的具体控制方法为：The specific control method for pressure calibration during the inflation process is:
所有阀门设置为关闭状态；All valves are set to closed position;
打开进星表阀，并使其一直处于打开状态；打开气源阀，为后端管路提供气体；Open the inlet valve and keep it open; open the gas source valve to provide gas to the rear-end pipeline;
调节减压阀，设定输出充气压力为要求值p1+0.1MPa，并通过减压压力表进行压力监测；Adjust the pressure reducing valve, set the output inflation pressure to the required value p1+0.1MPa, and monitor the pressure through the pressure reducing pressure gauge;
打开快充阀、进星阀，对进星阀气路上的卫星储箱进行充气；Open the quick-fill valve and the star-inlet valve, and inflate the satellite tank on the star-inlet valve gas path;
当进星压力表示值达到要求值p1时，关闭快充阀；When the inlet pressure reaches the required value p1, close the fast filling valve;
当卫星储箱容积Va≥10L时，采用恒定流量动态补偿模式，对卫星采用微流量模式进行充气以补偿储箱温度降低造成的压力降低；当卫星储箱容积Va＜10L时，采用定量气体动态补偿模式，对卫星采用微流量模式进行充气以补偿储箱温度变化造成的压力变化；当卫星储箱容积未知、温度未知情况下，采用变流量动态补偿模式，对卫星采用微流量模式进行充气，以补偿储箱温度降低造成的压力降，使进星压力表压力波动值维持在要求值波动范围内；When the satellite tank volume Va≥10L, the constant flow dynamic compensation mode is adopted, and the satellite is inflated in micro-flow mode to compensate for the pressure drop caused by the decrease in tank temperature; when the satellite tank volume Va＜10L, the quantitative gas dynamic compensation mode is adopted, and the satellite is inflated in micro-flow mode to compensate for the pressure change caused by the change in tank temperature; when the satellite tank volume and temperature are unknown, the variable flow dynamic compensation mode is adopted, and the satellite is inflated in micro-flow mode to compensate for the pressure drop caused by the decrease in tank temperature, so that the pressure fluctuation value of the satellite pressure gauge is maintained within the required value fluctuation range;
确认压力变化范围在要求值波动范围内后，进行压力标定数据采集工作，读取待标定的压力传感器电压值、进星压力表示值。After confirming that the pressure variation range is within the required value fluctuation range, perform pressure calibration data collection and read the voltage value of the pressure sensor to be calibrated and the input pressure indication value.
在上述的一种基于动态补偿的压力传感器标定系统，恒定流量动态补偿模式具体为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the constant flow dynamic compensation mode is specifically:
调节减压阀输出压力为p1+0.1MPa；根据储箱容积大小Va、储箱温度T1与室温T2的差值ΔT，ΔT＝T1-T2，在充气过程恒定流量动态补偿模式k-ΔT曲线中，查找开度值k1，并设定微流量充气调节阀至k1，对卫星采用微流量模式进行充气以补偿储箱温度降低造成的压力降低。Adjust the output pressure of the pressure reducing valve to p1+0.1MPa; according to the tank volume Va, the difference ΔT between the tank temperature T1 and the room temperature T2, ΔT=T1-T2, in the k-ΔT curve of the constant flow dynamic compensation mode during the inflation process, find the opening value k1, and set the micro-flow inflation regulating valve to k1, and use the micro-flow mode to inflate the satellite to compensate for the pressure drop caused by the decrease in tank temperature.
在上述的一种基于动态补偿的压力传感器标定系统，定量气体动态补偿模式具体为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the quantitative gas dynamic compensation mode is specifically:
打开充气罐阀，根据容积大小Va、储箱温度与室温的差值ΔT，设置气罐组容积组合Vb，Vb＝Va/100；并打开充气罐阀，使用减压阀对气罐组进行充压至p2，p2＝p1+0.3Mpa；然后关闭减压阀，在充气过程定量气体动态补偿模式k-ΔT曲线中，查找开度值k2；将微流量充气调节阀至k2，对卫星采用微流量模式进行充气以补偿储箱温度变化造成的压力变化。Open the gas filling tank valve, set the gas tank group volume combination Vb according to the volume Va, the difference ΔT between the tank temperature and the room temperature, Vb = Va/100; and open the gas filling tank valve, use the pressure reducing valve to pressurize the gas tank group to p2, p2 = p1 + 0.3Mpa; then close the pressure reducing valve, and find the opening value k2 in the k-ΔT curve of the quantitative gas dynamic compensation mode during the inflation process; set the micro-flow inflation regulating valve to k2, and use the micro-flow mode to inflate the satellite to compensate for the pressure change caused by the change in tank temperature.
在上述的一种基于动态补偿的压力传感器标定系统，变流量动态补偿模式具体为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the variable flow dynamic compensation mode is specifically:
调节减压阀输出压力为p1+0.1MPa，动态调整并设定微流量充气调节阀开度，对卫星采用微流量模式进行充气。Adjust the output pressure of the pressure reducing valve to p1+0.1MPa, dynamically adjust and set the opening of the micro-flow inflation regulating valve, and use the micro-flow mode to inflate the satellite.
在上述的一种基于动态补偿的压力传感器标定系统，放气过程压力标定的具体控制方法为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the specific control method of the pressure calibration during the deflation process is:
所有阀门设置为关闭状态；All valves are set to closed position;
打开进星表阀，并使其一直处于打开状态；Open the inlet valve and keep it open;
打开排气截止阀；Open the exhaust stop valve;
打开调整快排阀，泄放星内气体，当进星压力表示值达到要求值p1时，关闭快排阀；Open and adjust the quick exhaust valve to release the gas in the star. When the indicated value of the inlet star pressure reaches the required value p1, close the quick exhaust valve.
当卫星储箱容积Va≥10L时，采用恒定流量动态补偿模式，对卫星采用微流量模式进行排气以补偿储箱温度变化造成的压力变化；当卫星储箱容积Va＜10L时，采用定量气体动态补偿模式，对卫星采用微流量模式进行排气以补偿储箱温度变化造成的压力变化；在未知储箱容积大小、储箱温度情况下，采用变流量动态补偿模式，使进星压力表压力波动值维持在波动范围内；When the satellite tank volume Va≥10L, the constant flow dynamic compensation mode is adopted, and the satellite is vented in micro-flow mode to compensate for the pressure change caused by the tank temperature change; when the satellite tank volume Va＜10L, the quantitative gas dynamic compensation mode is adopted, and the satellite is vented in micro-flow mode to compensate for the pressure change caused by the tank temperature change; in the case of unknown tank volume and tank temperature, the variable flow dynamic compensation mode is adopted to keep the pressure fluctuation value of the satellite pressure gauge within the fluctuation range;
确认压力变化范围在波动范围内后，进行压力标定数据采集工作，读取待标定的压力传感器电压值、进星压力表示值。After confirming that the pressure change range is within the fluctuation range, perform pressure calibration data collection and read the voltage value of the pressure sensor to be calibrated and the input pressure indication value.
在上述的一种基于动态补偿的压力传感器标定系统，恒定流量动态补偿模式具体为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the constant flow dynamic compensation mode is specifically:
根据储箱容积大小Va、储箱温度T1与室温T2的差值ΔT，ΔT＝T1-T2，在放气过程恒定流量动态补偿模式k-ΔT曲线中，查找开度值k3；打开并调整微流量排气调节阀至k3，对卫星采用微流量模式进行排气以补偿储箱温度变化造成的压力变化。According to the tank volume Va, the difference ΔT between the tank temperature T1 and the room temperature T2, ΔT=T1-T2, in the k-ΔT curve of the constant flow dynamic compensation mode during the deflation process, find the opening value k3; open and adjust the micro-flow exhaust regulating valve to k3, and use the micro-flow mode to exhaust the satellite to compensate for the pressure change caused by the change in tank temperature.
在上述的一种基于动态补偿的压力传感器标定系统，定量气体动态补偿模式具体为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the quantitative gas dynamic compensation mode is specifically:
打开排气罐阀，根据储箱容积大小Va、储箱温度与室温的差值ΔT，设置气罐组容积组合Vb，Vb＝Va/100；并将气罐组内气体排空后，关闭排气截止阀，在放气过程定量气体动态补偿模式k-ΔT曲线中，查找开度值k4，调整并设定微流量排气调节阀至k4，对卫星采用微流量模式进行排气以补偿储箱温度变化造成的压力变化。Open the exhaust tank valve, set the gas tank group volume combination Vb according to the tank volume Va and the difference ΔT between the tank temperature and the room temperature, Vb = Va/100; after the gas in the gas tank group is emptied, close the exhaust stop valve, and in the k-ΔT curve of the quantitative gas dynamic compensation mode during the deflation process, find the opening value k4, adjust and set the micro-flow exhaust regulating valve to k4, and use the micro-flow mode to exhaust the satellite to compensate for the pressure change caused by the change in tank temperature.
在上述的一种基于动态补偿的压力传感器标定系统，变流量动态补偿模式具体为：In the above-mentioned pressure sensor calibration system based on dynamic compensation, the variable flow dynamic compensation mode is specifically:
动态调整并设定微流量排气调节阀开度，使进星压力表的每10秒的变化不大于1000Pa，对卫星采用微流量模式进行放气。Dynamically adjust and set the opening of the micro-flow exhaust regulating valve so that the change of the satellite pressure gauge every 10 seconds is no more than 1000Pa, and use the micro-flow mode to deflate the satellite.
本发明与现有技术相比的有益效果是：The beneficial effects of the present invention compared with the prior art are:
(1)本发明采用“快速大流量压力充放+微流量气体动态补偿”的方案，对星上储箱压力进行快速设置并动态稳定控制，使其保持较小的压力波动范围，大幅提高压力控制精度及压力标定工作效率，如图3所示，原始方法需要多次补充或补放、稳定过程，动态补偿方法仅需要在动态补偿过程进行短暂状态确认；(1) The present invention adopts the scheme of "fast large-flow pressure charging and discharging + micro-flow gas dynamic compensation" to quickly set the onboard tank pressure and dynamically and stably control it, so that it maintains a small pressure fluctuation range, greatly improving the pressure control accuracy and pressure calibration work efficiency. As shown in FIG3 , the original method requires multiple replenishment or discharging and stabilization processes, while the dynamic compensation method only requires a short state confirmation during the dynamic compensation process;
(2)本发明压力标定系统采用球阀作为快速充气、排气的控制阀门，可以提高充气、排气的效率；采用微流量调节阀进行流量控制，与普通针阀相比，对充气及放气流量的控制精度大大提高，同时微流量调节阀具有游标刻度，可以设定具体开度值；采用高精度的电子压力计，可以进行充、放气过程中压力的精密测量；(2) The pressure calibration system of the present invention adopts a ball valve as a control valve for rapid inflation and deflation, which can improve the efficiency of inflation and deflation; a micro-flow regulating valve is used for flow control, which greatly improves the control accuracy of inflation and deflation flow compared with an ordinary needle valve. At the same time, the micro-flow regulating valve has a vernier scale, which can set a specific opening value; a high-precision electronic pressure gauge is used to accurately measure the pressure during inflation and deflation;
(3)本发明采用气罐作为辅助控制措施，在动态补偿压力波动的环节，尤其是针对小容积储箱，能够实现气体流量随时间变化的控制；同时，气罐容积可变，可以调控流量相对时间变化速度；(3) The present invention uses a gas tank as an auxiliary control measure to dynamically compensate for pressure fluctuations, especially for small-volume storage tanks, and can achieve control of gas flow rate changes over time; at the same time, the volume of the gas tank is variable, and the speed of flow rate change relative to time can be adjusted;
(4)本发明引入储箱温度与室温差值、储箱容积等参数，通过对已有的数据曲线查询或差值计算，可以确定微流量调节阀的开度，压力的调控过程更加精准、有效率。(4) The present invention introduces parameters such as the difference between the storage tank temperature and the room temperature, and the storage tank volume. By querying the existing data curve or calculating the difference, the opening of the micro-flow regulating valve can be determined, and the pressure control process is more accurate and efficient.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明压力传感器标定系统示意图；FIG1 is a schematic diagram of a pressure sensor calibration system according to the present invention;
图2为本发明压力传感器标定系统原理示意图；FIG2 is a schematic diagram of the principle of the pressure sensor calibration system of the present invention;
图3为本发明充气过程恒定流量动态补偿模式k-ΔT曲线图；FIG3 is a k-ΔT curve diagram of a constant flow dynamic compensation mode during the inflation process of the present invention;
图4为本发明充气过程定量气体动态补偿模式k-ΔT曲线图；FIG4 is a k-ΔT curve diagram of a quantitative gas dynamic compensation mode during the inflation process of the present invention;
图5为本发明放气过程恒定流量动态补偿模式k-ΔT曲线图；FIG5 is a k-ΔT curve diagram of a constant flow dynamic compensation mode during deflation of the present invention;
图6为本发明放气过程定量气体动态补偿模式k-ΔT曲线图。FIG. 6 is a k-ΔT curve diagram of the quantitative gas dynamic compensation mode in the deflation process of the present invention.
具体实施方式Detailed ways
下面结合实施例对本发明作进一步阐述。The present invention will be further described below in conjunction with the embodiments.
本发明提供了一种基于动态补偿的压力传感器标定系统，用于卫星系统级压力传感器标定过程中压力的精确设置与维持，提高压力标定的准确性及标定效率。The present invention provides a pressure sensor calibration system based on dynamic compensation, which is used for accurately setting and maintaining pressure during the calibration process of satellite system-level pressure sensors, thereby improving the accuracy and efficiency of pressure calibration.
基于动态补偿的压力传感器标定系统，如图1所述，具体包括气源阀、减压阀、快充阀、微流量充气调节阀、进星表阀、进星阀、快排阀、微流量排气调节阀、排气截止阀、气罐组、充气罐阀、排气罐阀、过滤器1-过滤器7、气源压力表、减压压力表和进星压力表；The pressure sensor calibration system based on dynamic compensation, as shown in FIG1 , specifically includes an air source valve, a pressure reducing valve, a quick filling valve, a micro-flow charging regulating valve, an inlet star gauge valve, an inlet star valve, a quick exhaust valve, a micro-flow exhaust regulating valve, an exhaust stop valve, an air tank group, an air filling tank valve, an exhaust tank valve, filters 1-7, an air source pressure gauge, a pressure reducing pressure gauge and an inlet star pressure gauge;
其中，过滤器1的一端与外部气源连接；过滤器1的另一端与气源阀的一端连接；Among them, one end of the filter 1 is connected to the external air source; the other end of the filter 1 is connected to one end of the air source valve;
气源阀的另一端分为2路，其中1路依次与过滤器5、气源压力表连接；另1路与减压阀的一端连接；The other end of the air source valve is divided into two paths, one of which is connected to the filter 5 and the air source pressure gauge in sequence; the other is connected to one end of the pressure reducing valve;
减压阀的另一端分为4路；第1路依次与过滤器6、减压压力表连接，第2路与快充阀的一端连接，第3路与微流量充气调节阀的一端连接，第4路与充气罐阀的一端连接；The other end of the pressure reducing valve is divided into 4 paths; the first path is connected to the filter 6 and the pressure reducing pressure gauge in sequence, the second path is connected to one end of the fast filling valve, the third path is connected to one end of the micro-flow inflation regulating valve, and the fourth path is connected to one end of the inflation tank valve;
快充阀的另一端分为3路，第1路依次与过滤器7、进星表阀、进星压力表连接；第2路依次与过滤器3、进星阀、外部卫星连接；第3路与过滤器4的一端连接；The other end of the fast-fill valve is divided into three paths. The first path is connected to the filter 7, the inlet star gauge valve, and the inlet star pressure gauge in sequence; the second path is connected to the filter 3, the inlet star valve, and the external satellite in sequence; the third path is connected to one end of the filter 4;
微流量充气调节阀的另一端分为3路，第1路依次与过滤器7、进星表阀、进星压力表连接；第2路依次与过滤器3、进星阀、外部卫星连接；第3路与过滤器4的一端连接；The other end of the micro-flow inflation regulating valve is divided into three paths. The first path is connected to the filter 7, the inlet star gauge valve, and the inlet star pressure gauge in sequence; the second path is connected to the filter 3, the inlet star valve, and the external satellite in sequence; the third path is connected to one end of the filter 4;
过滤器4的另一端分别与快排阀的一端、微流量排气调节阀的一端连接；The other end of the filter 4 is connected to one end of the quick exhaust valve and one end of the micro-flow exhaust regulating valve respectively;
快排阀的另一端分别与微流量排气调节阀的另一端、排气截止阀的一端、排气罐阀的一端连接；排气截止阀的另一端排空；The other end of the quick exhaust valve is respectively connected to the other end of the micro-flow exhaust regulating valve, one end of the exhaust stop valve, and one end of the exhaust tank valve; the other end of the exhaust stop valve is emptied;
微流量排气调节阀的另一端分别与快排阀的另一端、排气截止阀的一端、排气罐阀的一端连接；The other end of the micro-flow exhaust regulating valve is respectively connected to the other end of the quick exhaust valve, one end of the exhaust stop valve, and one end of the exhaust tank valve;
排气罐阀的另一端分别与充气罐阀的另一端、过滤器2的一端连接；The other end of the exhaust tank valve is connected to the other end of the charging tank valve and one end of the filter 2 respectively;
充气罐阀的另一端分别与排气罐阀的另一端、过滤器2的一端连接；The other end of the charging tank valve is connected to the other end of the exhaust tank valve and one end of the filter 2 respectively;
过滤器2的另一端与气罐组连接；The other end of the filter 2 is connected to the gas tank group;
系统中各表、阀门之间通过管路连接。Each meter and valve in the system is connected by pipelines.
阀门均采用手动控制阀门；其中，气源阀、进星表阀、进星阀、排气截止阀、充气罐阀、排气罐阀为针阀；减压阀为输出压力0-4MPa的高精度调压阀；微流量充气调节阀、微流量排气调节阀为可调流量为0-1SLM的可调微流量调节阀；快充阀、快排阀均为球阀；所述气源压力表为0-25MPa普通精度电子压力表；减压压力表为0-10MPa普通精度电子压力表；进星压力表为分辨率不低于100Pa的精密电子压力计；所述过滤器1-过滤器7均采用过滤精度优于10um的金属滤网型过滤器；所述气罐组包括3个气罐，每个气罐的容积为500mL，气罐之间采用阀门、管路进行连接。All valves are manually controlled valves; among them, the gas source valve, star inlet valve, star inlet valve, exhaust stop valve, gas filling tank valve, and exhaust tank valve are needle valves; the pressure reducing valve is a high-precision pressure regulating valve with an output pressure of 0-4MPa; the micro-flow gas filling regulating valve and the micro-flow exhaust regulating valve are adjustable micro-flow regulating valves with an adjustable flow of 0-1SLM; the fast filling valve and the quick exhaust valve are both ball valves; the gas source pressure gauge is a 0-25MPa ordinary precision electronic pressure gauge; the pressure reducing pressure gauge is a 0-10MPa ordinary precision electronic pressure gauge; the star inlet pressure gauge is a precision electronic pressure gauge with a resolution of not less than 100Pa; the filters 1-7 all use metal filter mesh filters with a filtration accuracy better than 10um; the gas tank group includes 3 gas tanks, each with a volume of 500mL, and the gas tanks are connected by valves and pipelines.
如图2所示，将气源、压力标定控制系统、卫星进行连接，连接热敏-温度转换器与热敏元件，通过热敏-温度转换器读取储箱温度。As shown in FIG2 , the gas source, the pressure calibration control system, and the satellite are connected, the thermistor-temperature converter and the thermistor element are connected, and the tank temperature is read through the thermistor-temperature converter.
压力标定过程分为充气过程压力标定和放气过程压力标定。The pressure calibration process is divided into inflation process pressure calibration and deflation process pressure calibration.
压力标定过程控制方法如下：The pressure calibration process control method is as follows:
充气过程压力标定：Pressure calibration during inflation:
1)所有阀门设置为关闭状态；1) All valves are set to closed state;
2)打开进星表阀，并使其一直处于打开状态；打开气源阀，为后端管路提供气体；2) Open the inlet valve and keep it open; open the gas source valve to provide gas to the rear-end pipeline;
3)调节减压阀，设定输出充气压力为要求值p1+0.1MPa(优选值)，并通过减压压力表进行压力监测；3) Adjust the pressure reducing valve, set the output inflation pressure to the required value p1+0.1MPa (preferred value), and monitor the pressure through the pressure reducing pressure gauge;
4)打开快充阀、进星阀，对进星阀气路上的卫星储箱进行充气；4) Open the quick-fill valve and the star-inlet valve, and inflate the satellite tank on the star-inlet valve gas path;
5)当进星压力表示值达到要求值p1时，关闭快充阀；5) When the inlet pressure reaches the required value p1, close the fast filling valve;
6)当卫星储箱容积Va>＝10L(优选值)时，采用恒定流量动态补偿模式，即调节减压阀输出压力为p1+0.1MPa(优选值)，根据储箱容积大小Va、储箱温度T1与室温T2的差值ΔT(ΔT＝T1-T2)，在图3查找k-ΔT曲线，确定开度值k1，设定微流量充气调节阀至k1，对卫星采用微流量模式进行充气以补偿储箱温度降低造成的压力降低；6) When the satellite tank volume Va>=10L (preferred value), the constant flow dynamic compensation mode is adopted, that is, the pressure reducing valve output pressure is adjusted to p1+0.1MPa (preferred value), according to the tank volume Va, the difference ΔT between the tank temperature T1 and the room temperature T2 (ΔT=T1-T2), the k-ΔT curve is found in Figure 3, the opening value k1 is determined, the micro-flow inflation regulating valve is set to k1, and the satellite is inflated in micro-flow mode to compensate for the pressure drop caused by the decrease in tank temperature;
7)当卫星储箱容积Va<10L(优选值)时，采用定量气体动态补偿模式，即打开充气罐阀，根据容积大小Va、储箱温度与室温的差值ΔT，设置气罐组容积组合Vb，Vb≈Va/100(优选值)，并打开充气罐阀，使用减压阀对气罐组进行充压至p2，p2≈p1+0.3Mpa(优选值)，然后关闭减压阀，在图4查找k-ΔT曲线，确定开度值k2，设定微流量充气调节阀至k2，对卫星采用微流量模式进行充气以补偿储箱温度变化造成的压力变化；7) When the volume of the satellite tank Va<10L (preferred value), the quantitative gas dynamic compensation mode is adopted, that is, the gas filling tank valve is opened, and the volume combination Vb of the gas tank group is set according to the volume size Va, the difference between the tank temperature and the room temperature ΔT, Vb≈Va/100 (preferred value), and the gas filling tank valve is opened, and the pressure reducing valve is used to pressurize the gas tank group to p2, p2≈p1+0.3Mpa (preferred value), and then the pressure reducing valve is closed, and the k-ΔT curve is found in Figure 4 to determine the opening value k2, and the micro-flow inflation regulating valve is set to k2, and the satellite is inflated in the micro-flow mode to compensate for the pressure change caused by the change in tank temperature;
8)在未知储箱容积大小、储箱温度等情况下，采用变流量动态补偿模式，即调节减压阀输出压力为p1+0.1MPa(优选值)，动态调整并设定微流量充气调节阀开度，对卫星采用微流量模式进行充气，以补偿储箱温度降低造成的压力降，使进星压力表压力波动值维持在要求值波动范围内(如±5000Pa)；8) In the case of unknown tank volume and tank temperature, the variable flow dynamic compensation mode is adopted, that is, the output pressure of the pressure reducing valve is adjusted to p1+0.1MPa (preferred value), the opening of the micro-flow inflation regulating valve is dynamically adjusted and set, and the satellite is inflated in micro-flow mode to compensate for the pressure drop caused by the decrease in tank temperature, so that the pressure fluctuation value of the satellite pressure gauge is maintained within the required value fluctuation range (such as ±5000Pa);
9)确认压力变化范围在要求值波动范围内后，进行压力标定数据采集工作，读取待标定的压力传感器电压值、进星压力表示值。9) After confirming that the pressure variation range is within the required value fluctuation range, perform pressure calibration data collection and read the voltage value of the pressure sensor to be calibrated and the input pressure indication value.
放气过程压力标定：Pressure calibration during deflation:
1)所有阀门设置为关闭状态；1) All valves are set to closed state;
2)打开进星表阀，并使其一直处于打开状态；2) Open the inlet valve and keep it open;
3)打开排气截止阀；3) Open the exhaust stop valve;
4)打开调整快排阀，泄放星内气体，当进星压力表示值达到要求值p1时，关闭快排阀；4) Open and adjust the quick exhaust valve to release the gas in the star. When the inlet pressure indication value reaches the required value p1, close the quick exhaust valve;
5)当卫星储箱容积Va>＝10L(优选值)时，采用恒定流量动态补偿模式，即根据储箱容积大小Va、储箱温度T1与室温T2的差值ΔT(ΔT＝T1-T2)，在图5查找k-ΔT曲线，确定开度值k3，打开并调整微流量排气调节阀至k3，对卫星采用微流量模式进行排气以补偿储箱温度变化造成的压力变化；5) When the satellite tank volume Va>=10L (preferred value), the constant flow dynamic compensation mode is adopted, that is, according to the tank volume Va, the difference ΔT between the tank temperature T1 and the room temperature T2 (ΔT=T1-T2), the k-ΔT curve is found in Figure 5, the opening value k3 is determined, the micro-flow exhaust regulating valve is opened and adjusted to k3, and the satellite is exhausted in micro-flow mode to compensate for the pressure change caused by the change in tank temperature;
6)当卫星储箱容积Va<10L(优选值)时，采用定量气体动态补偿模式，即打开排气罐阀，根据储箱容积大小Va、储箱温度与室温的差值ΔT，设置气罐组容积组合Vb，Vb≈Va/100(优选值)，并将气罐组内气体排空后，关闭排气截止阀，在图6查找k-ΔT曲线，确定开度值k4，调整并设定微流量排气调节阀至k4，对卫星采用微流量模式进行排气以补偿储箱温度变化造成的压力变化；6) When the satellite tank volume Va<10L (preferred value), the quantitative gas dynamic compensation mode is adopted, that is, the exhaust tank valve is opened, and the gas tank group volume combination Vb is set according to the tank volume Va and the difference ΔT between the tank temperature and the room temperature, Vb≈Va/100 (preferred value), and after the gas in the gas tank group is emptied, the exhaust stop valve is closed, and the k-ΔT curve is found in Figure 6 to determine the opening value k4, and the micro-flow exhaust regulating valve is adjusted and set to k4, and the satellite is exhausted in micro-flow mode to compensate for the pressure change caused by the change in tank temperature;
7)在未知储箱容积大小、储箱温度情况下，采用变流量动态补偿模式，即动态调整并设定微流量排气调节阀开度，使进星压力表的每10秒的变化不大于1000Pa(优选值)，对卫星采用微流量模式进行放气，稳定过程中按照以上方法进行微调，使进星压力表压力波动值维持在p1±5000Pa范围内；7) In the case of unknown tank volume and tank temperature, the variable flow dynamic compensation mode is adopted, that is, the micro-flow exhaust regulating valve opening is dynamically adjusted and set so that the change of the satellite pressure gauge every 10 seconds is not greater than 1000Pa (preferred value), and the satellite is deflated in micro-flow mode. During the stabilization process, fine-tuning is performed according to the above method to maintain the pressure fluctuation value of the satellite pressure gauge within the range of p1±5000Pa;
8)确认压力变化范围在波动范围内后，进行压力标定数据采集工作，读取待标定的压力传感器电压值、进星压力表示值。8) After confirming that the pressure change range is within the fluctuation range, perform pressure calibration data collection and read the voltage value of the pressure sensor to be calibrated and the input pressure indication value.
本发明虽然已以较佳实施例公开如上，但其并不是用来限定本发明，任何本领域技术人员在不脱离本发明的精神和范围内，都可以利用上述揭示的方法和技术内容对本发明技术方案做出可能的变动和修改，因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化及修饰，均属于本发明技术方案的保护范围。Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211451204.8A CN115931215B (en) | 2022-11-18 | 2022-11-18 | A pressure sensor calibration system based on dynamic compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211451204.8A CN115931215B (en) | 2022-11-18 | 2022-11-18 | A pressure sensor calibration system based on dynamic compensation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115931215A CN115931215A (en) | 2023-04-07 |
| CN115931215B true CN115931215B (en) | 2024-06-25 |
Family
ID=86699998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211451204.8A Active CN115931215B (en) | 2022-11-18 | 2022-11-18 | A pressure sensor calibration system based on dynamic compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115931215B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100472194C (en) * | 2007-06-13 | 2009-03-25 | 袁玉英 | Static characteristic detection system of voltage regulator |
| RU2533745C1 (en) * | 2013-07-11 | 2014-11-20 | Открытое акционерное общество "Конструкторское бюро химавтоматики" | Dialling and calibration method of gas flow meter, and device for its implementation |
| CA2851440A1 (en) * | 2014-05-05 | 2015-11-05 | Lacey Instrumentation Inc. | Pressure gauge testing device |
| RU2573671C1 (en) * | 2014-07-09 | 2016-01-27 | Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт прикладных проблем" | Method and device for dynamic pressure sensor calibration |
| CN107830914B (en) * | 2017-09-19 | 2020-02-14 | 兰州空间技术物理研究所 | Micro-flow calibration device and method with double-channel symmetrical structure |
| CN109631826B (en) * | 2018-12-29 | 2021-02-09 | 航天东方红卫星有限公司 | Satellite automation precision detection method |
| CN109916556B (en) * | 2019-04-11 | 2023-11-03 | 华能国际电力股份有限公司 | A portable pressure sensor dynamic and static calibration system |
-
2022
- 2022-11-18 CN CN202211451204.8A patent/CN115931215B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 卫星用高精度压力传感器研究;付新菊;关威;;仪表技术与传感器;20180215(第02期);第156-158页 * |
| 小卫星真空检漏设备研制;丁勤;苏文;葛宇;薛长利;;航天器环境工程;20060620(第03期);第49-54页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115931215A (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107131931B (en) | Attitude control engine high-temperature propellant steady-state flow in-situ calibration device and calibration method | |
| CN103003766B (en) | The bearing calibration of gas supply device flow controller and flow measuring method | |
| WO2007105360A1 (en) | Leakage inspecting method and leakage inspecting device for pipe lines | |
| CN101470020B (en) | Steady-state hydrogen consumption detection system and detection method | |
| CN109238936B (en) | Compensation type ventilation rate standard rod calibration device and calibration method thereof | |
| JP5123175B2 (en) | Thermal mass flow meter and thermal mass flow controller | |
| WO2012081537A1 (en) | Differential pressure measuring method and device | |
| US8636040B2 (en) | Installation for packaging NO using mass flow meters | |
| CN107830914A (en) | The micrometeor calibrating installation and method of a kind of binary channels symmetrical structure | |
| CN109612899A (en) | A pressure-corrected gas permeability calculation method | |
| CN104236816A (en) | On-line calibration device and method for leakage detection instrument | |
| EP0689044B1 (en) | Apparatus for and method of measuring gas absorbing characteristics | |
| CN115931215B (en) | A pressure sensor calibration system based on dynamic compensation | |
| CN106950150A (en) | Liquid density measurement device and method | |
| CN114427901A (en) | A system and method for realizing dynamic regulation and calibration of temperature and pressure of gas meter | |
| CN109854957B (en) | Filling method of closed parallel storage tank with low filling rate | |
| CN106134436B (en) | Spacecraft propulsion agent gas flow surveying instrument | |
| CN108613719B (en) | Flowmeter calibration method and device | |
| CN104075769A (en) | Propellant surplus measuring system and method | |
| CN105757448A (en) | Accurate gas sub-packaging device | |
| WO2018193444A1 (en) | Combined volumetric - gravimetric system and method for preparation of gas mixtures | |
| CN100501350C (en) | Gas flow test bench and method of operation and formation thereof | |
| CN109540240B (en) | Capacity calibration device by gas mass method | |
| CN207688999U (en) | A kind of measuring apparatus that flow is weighed | |
| CN113959533B (en) | High-precision high-pressure hydrogen mass flowmeter calibration method |
Legal Events
| 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |