CN114458573A - Method for measuring pressure - Google Patents
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- CN114458573A CN114458573A CN202210140820.5A CN202210140820A CN114458573A CN 114458573 A CN114458573 A CN 114458573A CN 202210140820 A CN202210140820 A CN 202210140820A CN 114458573 A CN114458573 A CN 114458573A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 8
- 239000000565 sealant Substances 0.000 description 6
- 238000009530 blood pressure measurement Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/06—Mobile combinations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0201—Current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/05—Pressure after the pump outlet
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
一种用于测量由被电动驱动的压气机、优选经由曲柄连杆传动装置被电动驱动的往复活塞式压气机所产生的压力的方法，其中，确定驱动该压气机的电动马达的与在压气机出口处的压力变化相关的平均马达电流变化并将其作为用于运行该压气机的与压力成比例的参数、以输入参数的形式提供或显示给控制装置。
A method for measuring the pressure produced by an electrically driven compressor, preferably a reciprocating piston compressor electrically driven via a crank connecting rod transmission, wherein the difference between the The average motor current change relative to the pressure change at the outlet of the compressor is provided as an input parameter or displayed to the control device as a pressure proportional parameter for operating the compressor.
Description
技术领域technical field
本发明涉及一种用于测量由被电动驱动的压气机、优选经由曲柄连杆传动装置被电动驱动的往复活塞式压气机所产生的压力的方法。此外，本发明涉及一种具有由电动马达驱动的压气机的可携带式小型压缩机、优选地在维修辅助设备中用于车辆轮胎的密封和泵气的小型压缩机，该小型压缩机具有用于控制该维修辅助设备的控制装置或调控单元。The present invention relates to a method for measuring the pressure generated by an electrically driven compressor, preferably a reciprocating piston compressor electrically driven via a crank connecting rod transmission. Furthermore, the present invention relates to a portable compact compressor with a compressor driven by an electric motor, preferably in service aids for sealing and pumping of vehicle tires, the compact compressor having a useful A control device or control unit for controlling the maintenance aid.
背景技术Background technique
所述压气机例如需要带有用于对可充气物体进行密封和泵气、尤其用于对机动车辆轮胎进行密封和泵气的装置或作为该装置的一部分。这些设备被称作“维修辅助设备”或“维修工具包”。The compressor is required, for example, with or as part of a device for sealing and pumping inflatable objects, in particular motor vehicle tires. These devices are called "maintenance aids" or "repair kits".
这些可携带的和轻质的装置包含作为压缩空气源的压缩机单元，此外还具有用于可填充到可充气物体中的自密封剂(用于隔离轮胎损坏)的密封剂容器、用于密封剂和压缩空气的阀单元和分配单元，并且设有可连接到所述压缩空气源的入口导管和可连接到所述可充气物体的出口导管。These portable and lightweight units contain a compressor unit as a source of compressed air, in addition to a sealant container for self-sealing (for isolating tire damage) that can be filled into inflatable objects, for sealing A valve unit and a dispensing unit for agent and compressed air and is provided with an inlet conduit connectable to the source of compressed air and an outlet conduit connectable to the inflatable object.
在此，该密封剂可以由用户手动地或借助该空气压缩机来施用。借助这种维修工具包来恢复机动性的过程需要多个复杂操作，这些复杂操作必须由该维修工具包的用户手动地实施。其中例如包括：爆胎的识别、密封剂的施用、借助压力计以及计时器监测密封过程、机动车辆为了分配密封剂进行的限定性移动、以及对修复结果的评估。Here, the sealant can be applied manually by the user or by means of the air compressor. The process of restoring mobility by means of such a repair kit requires complex operations that must be performed manually by the user of the repair kit. These include, for example: identification of punctures, application of sealant, monitoring of the sealing process by means of pressure gauges and timers, limited movement of the motor vehicle for dispensing sealant, and evaluation of repair results.
所述维修工具包的大多数用户并没有针对相应系统的使用受过培训并且因此不排除并没有如所规定的那样来操作该系统。由此，就可能阻碍成功的使用并且严重影响对这些维修工具包的接受度。Most users of the repair kits are not trained for the use of the respective system and therefore do not preclude not operating the system as specified. As such, successful use may be hindered and acceptance of these repair kits may be severely affected.
出于这个原因，这些系统的操作必须被设计得尽可能简单且不容易失误。这在大多情况下是通过使用普遍可理解的图标、通过安全防护、以及通过要由用户实施的警告标签来实现的。如EP 2 196 305A1中所示，为此还可以采用电子的控制和显示系统。EP 2 196305A1为此公开了一种用于运行使用密封剂工作且包含压缩机的维修辅助系统的方法，在该方法中，密封剂流的接通可以借助于将压力差与预定的阈值进行比较来自动进行。For this reason, the operation of these systems must be designed to be as simple and error-proof as possible. This is achieved in most cases through the use of commonly understood icons, through security guards, and through warning labels to be implemented by the user. Electronic control and display systems can also be used for this purpose, as shown in EP 2 196 305 A1. EP 2 196 305 A1 discloses for this purpose a method for operating a maintenance assistance system which works with sealant and includes a compressor, in which method the flow of sealant can be switched on by means of a comparison of a pressure difference with a predetermined threshold value to do it automatically.
正是为了运行这样的电子系统，需要在运行中的空气压缩机上进行电子式的压力测量或需要与压力成比例的电气/电子信号。但相较于通常所使用的机械式压力显示器，采用适合的电子式压力传感器会带来显著的成本增加。It is in order to operate such an electronic system that an electronic pressure measurement or an electrical/electronic signal proportional to the pressure is required on the operating air compressor. However, the use of a suitable electronic pressure sensor brings a significant cost increase compared to the commonly used mechanical pressure display.
压力传感器通常还被安置在压气机的产生最高压力的位置处，即压气机出口处。因此，在压气机出口/压缩机出口处的通常较高的空气温度就尤其对所需要的压力传感器提出了特别的要求。由于将压力传感器针对高温进行的相应适配，当然也使得制造成本升高，这进而导致电子支持式维修工具包迄今为止很少被使用。The pressure sensor is also usually placed at the location of the compressor where the highest pressure is generated, ie at the compressor outlet. Therefore, the usually higher air temperature at the compressor outlet/compressor outlet places particular demands on the required pressure sensor. Due to the corresponding adaptation of the pressure sensor for high temperatures, the manufacturing costs are of course also increased, which in turn has led to the fact that electronically supported repair kits have so far been rarely used.
发明内容SUMMARY OF THE INVENTION
因此，本发明的目的在于，提供一种成本有效的方法来对电子支持式维修辅助工具包进行压力测量并且在此还同样地提高相应配备的小型压缩机的使用时长和可靠性。It is therefore an object of the present invention to provide a cost-effective method for the pressure measurement of electronically supported maintenance aid kits and also to increase the service life and reliability of a correspondingly equipped small compressor.
这个目的通过主权利要求的特征实现。在从属权利要求中公开了其他有利的设计。This object is achieved by the features of the main claim. Other advantageous designs are disclosed in the dependent claims.
在此，确定驱动该压气机的电动马达的与在压气机出口处的压力变化相关的平均马达电流变化并将其作为用于运行该压气机的与压力成比例的参数、以输入参数的形式提供给或例如借助于用户界面显示给控制装置。因此，根据本发明的方法来测量或确定平均马达电流不需要单独的压力传感器。与电子式压力传感器相比，这种方法是更加成本有效的并且从制造工艺来看进行整合也更容易得多。尤其压力传感器的热负荷不再是指标。Here, the average motor current change in relation to the pressure change at the compressor outlet of the electric motor driving the compressor is determined and used as a pressure-proportional parameter for operating the compressor, in the form of an input parameter Provided or displayed to the control device, eg by means of a user interface. Therefore, measuring or determining the average motor current according to the method of the present invention does not require a separate pressure sensor. Compared to electronic pressure sensors, this method is more cost effective and much easier to integrate from a manufacturing process perspective. In particular, the thermal load of the pressure sensor is no longer an indicator.
一个有利的改进方案在于，通过在驱动用电动马达的优选电子式马达控制单元(马达驱动器)处的分流电阻器来确定驱动该压气机的电动马达的平均马达电流。在此，热负荷甚至不起作用并且这样的分流电阻器可以很容易地安装，即不必在其余部件上作结构改变。因此，作为“电流传感器”的分流电阻器被直接地整合在该马达控制单元的电路中。An advantageous development consists in determining the average motor current of the electric motor driving the compressor by means of a shunt resistor at the preferably electronic motor control unit (motor driver) of the electric motor for driving the compressor. Here, the thermal load does not even play a role and such a shunt resistor can be easily installed, ie without having to make structural changes on the remaining components. Therefore, the shunt resistor as a "current sensor" is directly integrated in the circuit of the motor control unit.
另一个有利的设计在于，确定驱动该压气机的电动马达的与在压气机出口处的压力变化相关的平均马达电流变化并将其作为与压力成比例的关键的并且主要的输入参数(在适当时作为唯一的指令参数)提供给用于控制该压气机的控制装置或包含压气机的装置。因此可能的是，直接地并且根据马达电流与压气机的出口压力之间的相关性来操作控制装置，其中不需要其他传感器。Another advantageous design consists in determining the average motor current change in relation to the pressure change at the compressor outlet of the electric motor driving the compressor and using it as the key and main input parameter proportional to the pressure (where appropriate as the only command parameter) to the control device for controlling the compressor or the device containing the compressor. It is thus possible to operate the control device directly and as a function of the correlation between the motor current and the outlet pressure of the compressor, wherein no further sensors are required.
在此充分利用了驱动该压气机的电动马达的平均电流与邻近于该压气机出口的背压之间的二次方相关性。通过事先确定的二次换算函数或数值表，可以以对于用途而言足够的精确度来计算背压。针对不同的运行状态(电压、温度)，必须按照所要求的精确度采用不同的换算函数。The quadratic dependence between the average current of the electric motor driving the compressor and the back pressure adjacent to the compressor outlet is exploited here. By means of a predetermined quadratic conversion function or table of values, the back pressure can be calculated with sufficient accuracy for the purpose. For different operating states (voltage, temperature), different conversion functions must be used according to the required accuracy.
基于根据本发明的方法简单并且成本有效地提供了相关输入参数，该方法特别适合应用于一种具有由电动马达驱动的压气机的可携带式小型压缩机中、优选地在维修辅助设备中用于车辆轮胎的密封和泵气的小型压缩机中，该小型压缩机具有用于控制该小型压缩机和/或该维修辅助设备的控制装置，其中，该控制器的这些输入信号之一是由该压气机所产生的出口侧压力，根据本方法，根据马达电流来确定该压力。Based on the simple and cost-effective provision of the relevant input parameters by the method according to the invention, the method is particularly suitable for use in a small portable compressor with a compressor driven by an electric motor, preferably in service aids In a small compressor for sealing and pumping of vehicle tires, the small compressor has a control device for controlling the small compressor and/or the maintenance aid, wherein one of the input signals of the controller is determined by The outlet side pressure generated by the compressor is determined according to the method according to the motor current.
有利地，这样的小型压缩机被设计成使得该小型压缩机具有通过曲柄连杆传动装置被电动驱动的往复活塞式压气机，并且该控制装置能够与用于驱动用电动马达的马达控制单元和/或用户界面通信地连接，其中，适合用于确定该电动马达的平均马达电流的分流电阻器被设置在该电子式马达控制单元处，并且通过该分流电阻器确定的平均马达电流能够被处理为该控制装置的输入参数。在对该平均马达电流进行这样的检测时不需要压力传感器，其中，尽管如此并且通过该压气机出口处的压力与马达电流之间的相关性，该压力展示了关键的参数。Advantageously, such a small compressor is designed such that the small compressor has a reciprocating piston compressor electrically driven by means of a crank connecting rod transmission, and the control device is able to communicate with the motor control unit for the driving electric motor and the A user interface is communicatively connected, wherein a shunt resistor suitable for determining the average motor current of the electric motor is provided at the electronic motor control unit and the average motor current determined by the shunt resistor can be processed Input parameters for the control device. No pressure sensor is required for such detection of the average motor current, which nevertheless exhibits a key parameter and through the correlation between the pressure at the compressor outlet and the motor current.
此外，根据平均马达电流进行的压力测量还可以有利地用于通过调控单元进行最大压力限制。于是，不再需要额外的机械式限压。于是，在例如用于限定在维修辅助设备中的小型压缩机的最大压力的这样一种用途中，大致根据针对不同的轮胎类型所预调的并且代表最大压力的、驱动该压气机的电动马达的平均马达电流的阈值，通过其控制装置来关断所述小型压缩机。Furthermore, the pressure measurement based on the average motor current can also advantageously be used for maximum pressure limitation by the regulating unit. Thus, no additional mechanical pressure limiting is required. Thus, in such a use, for example, for defining the maximum pressure of a small compressor in a service aid, the electric motor driving the compressor is roughly pre-set for the different tire type and representing the maximum pressure. The threshold value of the average motor current through which the control device switches off the small compressor.
附图说明Description of drawings
借助于实施例进一步阐述本发明。在附图中：The invention is further explained with the aid of examples. In the attached image:
图1示意性地示出了在电子支持式维修辅助设备中的小型压缩机的结构，Figure 1 schematically shows the structure of a small compressor in an electronically supported maintenance aid,
图2示出了用于展示平均马达电流与压缩机出口处的背压的相关性的典型曲线。Figure 2 shows a typical curve showing the correlation of the average motor current with the back pressure at the compressor outlet.
具体实施方式Detailed ways
图1示意性地示出了在电子支持式维修辅助设备中的小型压缩机1的结构，该小型压缩机带有由电动马达2驱动的往复活塞式压气机3，用于对在此没有详细展示的车辆轮胎进行密封和泵气。另外，在此设置了用于控制维修辅助设备或小型压缩机的控制装置4(MCU＝Motor Control Unit)。FIG. 1 schematically shows the structure of a small compressor 1 with a reciprocating piston compressor 3 driven by an electric motor 2 in an electronically supported maintenance aid for the purpose of not being detailed here. The displayed vehicle tires are sealed and pumped. In addition, a control device 4 (MCU=Motor Control Unit) for controlling maintenance auxiliary equipment or a small compressor is provided here.
控制装置4还通过马达控制单元5(MD＝Motor Drive)、按照经由用户界面6(UI＝User Interface)获得的用户要求来控制空气压缩机/小型压缩机1的功能，该用户界面即：例如智能电话上的操纵面板、将该输入信号转换成压力显示的装置、操作面板、或应用程序(App)。The control device 4 also controls the functions of the air compressor/mini compressor 1 via the motor control unit 5 (MD=Motor Drive) according to user requirements obtained via a user interface 6 (UI=User Interface), eg: A control panel on a smartphone, a device that converts the input signal into a pressure display, an operation panel, or an application (App).
为了运行控制装置4，提供了电子式“压力测量”，在此处所使用的根据本发明的方法的实施方式中，该压力测量是通过分析呈整合在马达控制单元5的电路中的(在此未详细展示的)分流电阻器的形式的电流传感器的数据来进行的。在控制装置4内对借助于该分流电阻器确定的平均马达电流进行处理、并且将其与通过算法算出的往复活塞式压气机的输出侧压力进行相关。In order to operate the control device 4 , an electronic “pressure measurement” is provided, which, in the embodiment of the method according to the invention used here, is integrated in the circuit of the
为此充分利用了驱动该压气机的电动马达的平均电流与邻近于该压气机出口的背压之间的二次方相关性。通过事先确定的换算函数或通过数值表，可以以对于用途而言足够的精确度来计算背压。For this purpose, the quadratic correlation between the average current of the electric motor driving the compressor and the back pressure adjacent to the compressor outlet is exploited. By means of a predetermined conversion function or by means of a value table, the back pressure can be calculated with sufficient accuracy for the purpose.
针对不同的运行状态(电压、温度)，必须按照所要求的精确度采用不同的换算函数。图2示出了用于展示平均马达电流与压气机出口处的背压的相关性的典型的曲线。在那里所展示的测量值以良好的精确度与以近似的、嵌入的曲线所展示的二次函数的相关性相对应。For different operating states (voltage, temperature), different conversion functions must be used according to the required accuracy. Figure 2 shows a typical curve for demonstrating the dependence of the average motor current on the back pressure at the compressor outlet. The measured values presented there correspond with good precision to the correlation of the quadratic function presented with the approximated, embedded curve.
附图标记说明Description of reference numerals
1 小型压缩机1 small compressor
2 电动马达2 electric motors
3 往复活塞式压气机3 Reciprocating piston compressor
4 调控或控制装置/调控单元4 Regulation or control device/regulation unit
5 马达控制单元/马达驱动器5 Motor control unit/motor driver
6 用户界面6 User Interface
Claims (6)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015214006.7 | 2015-07-24 | ||
| DE102015214006.7A DE102015214006A1 (en) | 2015-07-24 | 2015-07-24 | Method for pressure measurement |
| CN201680042946.1A CN107923377A (en) | 2015-07-24 | 2016-03-03 | method for measuring pressure |
| PCT/EP2016/054507 WO2017016680A1 (en) | 2015-07-24 | 2016-03-03 | Pressure measurement method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201680042946.1A Division CN107923377A (en) | 2015-07-24 | 2016-03-03 | method for measuring pressure |
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| CN114458573A true CN114458573A (en) | 2022-05-10 |
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| CN201680042946.1A Pending CN107923377A (en) | 2015-07-24 | 2016-03-03 | method for measuring pressure |
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| CN201680042946.1A Pending CN107923377A (en) | 2015-07-24 | 2016-03-03 | method for measuring pressure |
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|---|---|
| EP (1) | EP3325804B1 (en) |
| CN (2) | CN114458573A (en) |
| DE (1) | DE102015214006A1 (en) |
| PL (1) | PL3325804T3 (en) |
| WO (1) | WO2017016680A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017212040A1 (en) | 2017-07-13 | 2019-01-17 | Continental Reifen Deutschland Gmbh | Method for weight-dependent control of the internal pressure of a loaded by a weight or load carrying body |
| AT522933B1 (en) | 2019-09-06 | 2021-04-15 | Weber Hydraulik Gmbh | Portable, battery-operated hydraulic power pack for hydraulic rescue tools |
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- 2016-03-03 WO PCT/EP2016/054507 patent/WO2017016680A1/en active Application Filing
- 2016-03-03 EP EP16710928.9A patent/EP3325804B1/en active Active
- 2016-03-03 PL PL16710928T patent/PL3325804T3/en unknown
- 2016-03-03 CN CN201680042946.1A patent/CN107923377A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107923377A (en) | 2018-04-17 |
| PL3325804T3 (en) | 2021-06-28 |
| EP3325804B1 (en) | 2020-12-09 |
| DE102015214006A1 (en) | 2017-01-26 |
| WO2017016680A1 (en) | 2017-02-02 |
| EP3325804A1 (en) | 2018-05-30 |
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