CN116858577A - Low-temperature test method, system and device for air supply unit - Google Patents

Low-temperature test method, system and device for air supply unit Download PDF

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Publication number
CN116858577A
CN116858577A CN202310782468.XA CN202310782468A CN116858577A CN 116858577 A CN116858577 A CN 116858577A CN 202310782468 A CN202310782468 A CN 202310782468A CN 116858577 A CN116858577 A CN 116858577A
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China
Prior art keywords
temperature
suspension system
air suspension
air
dew point
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CN202310782468.XA
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CN116858577B (en
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陶峰
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Xiaomi Automobile Technology Co Ltd
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Xiaomi Automobile Technology Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/04—Suspension or damping
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

The present disclosure provides a method, system and apparatus for low temperature testing of an air supply unit. Relates to the technical field of air suspension system testing. In some embodiments of the present disclosure, an air supply unit cryogenic test system includes: the air suspension system is positioned in the environmental cabin; the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system; the environment cabin is used for providing a containing space for the air suspension system for the low-temperature test; and the controller is used for controlling the rise and fall of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature, and controlling the temperature of the environmental cabin to be the target environmental temperature so as to enable the target dew point temperature to be lower than the target environmental temperature, preventing the electromagnetic valve from icing in the low-temperature test process of the air supply unit and improving the low-temperature test efficiency of the air supply unit.

Description

Low-temperature test method, system and device for air supply unit
Technical Field
The disclosure relates to the technical field of air suspension system testing, in particular to a low-temperature testing method, system and device for an air supply unit.
Background
An air suspension system, which is a suspension system for an automobile or other vehicle, uses an air spring instead of a conventional steel or fiberglass spring. The system consists essentially of an air spring and an air supply unit, and the flow and pressure of the gas are monitored and managed by an electronic control system.
The air supply unit is an important component of the air suspension system, and contains a plurality of solenoid valves. The working medium of the air suspension system is compressed air, the compressed air naturally contains moisture, if the compressed air is not dry enough, the electromagnetic valve can be frozen in the low-temperature test process of the air supply unit, and finally the test cannot be performed, so that the low-temperature test efficiency of the air supply unit is affected.
Disclosure of Invention
The disclosure provides a low-temperature test method, a system and a device for an air supply unit, which are used for at least solving the problem that the low-temperature test efficiency of the air supply unit is affected due to icing of an existing electromagnetic valve.
The technical scheme of the present disclosure is as follows:
embodiments of the present disclosure provide an air supply unit low temperature test system, comprising: the air suspension system is positioned in the environment cabin;
the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system;
the environmental chamber is used for providing a containing space for the air suspension system for low-temperature testing;
the controller is used for controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to a target dew point temperature and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
Optionally, the air supply unit cryogenic test system further comprises: a dew point meter; the dew point meter is positioned in the environment cabin and connected with the air suspension system for measuring the dew point temperature of the air suspension system.
Optionally, a switch is installed on a pipeline between the external air source and the air suspension system, and under the condition that the switch is in an on state, the external air source injects compressed air into the air suspension system.
Optionally, the external air source includes: a supercharger and a dryer;
the supercharger is used for compressing external gas to obtain compressed gas;
and the dryer is connected with the supercharger pipeline and is used for drying the compressed gas.
Optionally, the air suspension system comprises: an air supply unit, the air supply unit comprising: an electromagnetic valve;
the temperature of the environmental chamber is regulated, and the reduction amplitude of the temperature of the environmental chamber can be calibrated through the icing condition of the electromagnetic valve.
The embodiment of the disclosure also provides an air supply unit low-temperature test method, which is applied to an air supply unit low-temperature test system, wherein the air supply unit low-temperature test system comprises: the air suspension system is positioned in the environment cabin; the method comprises the following steps:
after the external air source fills compressed air into the air suspension system, controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be a target dew point temperature;
and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
Optionally, after the external air source fills the compressed air into the air suspension system, controlling the lifting of the internal pressure of the air suspension system, including:
after the external air source fills compressed air into the air suspension system, the pressure of the air suspension system is a first pressure, and the dew point temperature of the air suspension system is a first temperature;
controlling the temperature of the environmental chamber to be reduced to a second temperature, wherein the second temperature is lower than the first temperature;
opening a fourth reversing valve and an exhaust valve of the air suspension system, reducing the air suspension system to a second pressure, wherein the dew point temperature of the air suspension system is a third temperature, and the third temperature is less than the second temperature; closing a fourth reversing valve and an exhaust valve of the air suspension system;
controlling the temperature of the environmental chamber to be reduced to a fourth temperature, wherein the fourth temperature is higher than the third temperature;
and controlling the internal pressure of the air suspension system to rise and fall for a plurality of times until the dew point temperature of the air suspension system is adjusted to be the target dew point temperature.
Optionally, controlling the internal pressure of the air suspension system to go through one lift includes:
starting a first reversing valve and a fourth reversing valve, starting a compressor, and increasing the internal pressure of the air suspension system to a first pressure, wherein the dew point temperature of the air suspension system is a fifth temperature, and the fifth temperature is smaller than the fourth temperature;
and opening a fourth reversing valve and an exhaust valve, reducing the internal pressure of the air suspension system to a second pressure, wherein the dew point temperature of the air suspension system is a sixth temperature, the sixth temperature is less than or equal to the fourth temperature, and closing the fourth reversing valve and the exhaust valve.
The embodiment of the disclosure also provides an air supply unit low-temperature test device, comprising:
the first control module is used for controlling the lifting of the internal pressure of the air suspension system after the compressed gas is filled into the air suspension system by the external air source so as to adjust the dew point temperature of the air suspension system to be a target dew point temperature;
and the second control module is used for controlling the temperature of the environmental cabin to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
The embodiment of the disclosure also provides an electronic device, including:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the steps of the above-described method.
The disclosed embodiments also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method.
The disclosed embodiments also provide a computer program product comprising a computer program/instruction which, when executed by a processor, performs the method described above.
The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:
in some embodiments of the present disclosure, an air supply unit cryogenic test system includes: the air suspension system is positioned in the environmental cabin; the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system; the environment cabin is used for providing a containing space for the air suspension system for the low-temperature test; and the controller is used for controlling the rise and fall of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature, and controlling the temperature of the environmental cabin to be the target environmental temperature so as to enable the target dew point temperature to be lower than the target environmental temperature, preventing the electromagnetic valve from icing in the low-temperature test process of the air supply unit and improving the low-temperature test efficiency of the air supply unit.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure and do not constitute an undue limitation on the disclosure.
FIG. 1 is a schematic diagram of a low temperature test system for an air supply unit according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic flow diagram of an air suspension system provided in an exemplary embodiment of the present disclosure;
FIG. 3 is a flow chart of a method for low temperature testing of an air supply unit according to an exemplary embodiment of the present disclosure;
fig. 4 is a schematic structural view of an air supply unit low temperature test apparatus according to an exemplary embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an exemplary embodiment of the present disclosure.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the present disclosure.
An air suspension system, which is a suspension system for an automobile or other vehicle, uses an air spring instead of a conventional steel or fiberglass spring. The system consists essentially of an air spring and an air supply unit, and the flow and pressure of the gas are monitored and managed by an electronic control system.
The air suspension system has the following advantages:
better driving and driving comfort: an air suspension system may provide a smoother ride experience than conventional suspensions because it may automatically adjust the suspension height depending on the use scenario.
Improving vehicle passing performance: in off-road driving, a sufficient ground clearance can make the vehicle better pass over uneven road surfaces, a serpentine path and steep hills. Air suspension systems allow the rider to lower or raise the suspension height to meet specific driving condition needs.
The air supply unit is an important component of the air suspension system, and contains a plurality of solenoid valves. The working medium of the air suspension system is compressed air, the compressed air naturally contains moisture, if the compressed air is not dry enough, the electromagnetic valve can be frozen in the low-temperature test process of the air supply unit, and finally the test cannot be performed, so that the low-temperature test efficiency of the air supply unit is affected.
In view of the foregoing technical problems, in some embodiments of the present disclosure, an air supply unit cryogenic test system includes: the air suspension system is positioned in the environmental cabin; the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system; the environment cabin is used for providing a containing space for the air suspension system for the low-temperature test; and the controller is used for controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature, and controlling the temperature of the environmental cabin to be the target environmental temperature so as to enable the target dew point temperature to be lower than the target environmental temperature, preventing the electromagnetic valve of the air supply unit from icing in the low-temperature test process, and improving the low-temperature test efficiency of the air supply unit.
The following describes in detail the technical solutions provided by the embodiments of the present disclosure with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an air supply unit cryogenic test system 10 according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the air supply unit cryogenic test system 10 includes: an air suspension system 11, an environmental chamber 12, an external air source 13, a controller 14 and a dew point meter 15. Wherein the air suspension system 11 and dew point meter 15 are located within the environmental chamber 12.
The external air source 13 is connected with an air suspension system pipeline and is used for filling compressed air into the air suspension system;
an environmental chamber 12 for providing a cold test accommodation space for the air suspension system;
a controller 14 for controlling the rise and fall of the internal pressure of the air suspension system to adjust the dew point temperature of the air suspension system to a target dew point temperature, and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
Fig. 2 is a schematic flow diagram of an air suspension system 11 according to an exemplary embodiment of the present disclosure. As shown in fig. 2, the air suspension system 11 includes an air supply unit 111, an air spring 112, and an air tank 113. The air spring 112 and the air tank 113 are connected to the air supply unit 111 by pipes.
As shown in fig. 2, the air supply unit 111 includes an exhaust valve, a direction valve 1, a direction valve 2, a direction valve 3, a direction valve 4, a spring valve 1, a spring valve 2, a spring valve 3, a spring valve 4, a desiccant, a throttle valve, a motor, a pressure limiting valve, a check valve, an air filter, and a temperature pressure sensor P/U.
In the embodiment of the present disclosure, the air supply unit 111 needs to repeatedly switch on and off the respective solenoid valves when performing a low temperature test. The working medium of the air suspension system is compressed air, the compressed air naturally contains moisture, if the compressed air is not dry enough, the electromagnetic valve can be frozen in the low-temperature test process of the air supply unit, and finally the test cannot be performed, so that the low-temperature test efficiency of the air supply unit is affected. According to the embodiment of the disclosure, the rise and fall of the internal pressure of the air suspension system are controlled, so that the dew point temperature of the air suspension system is adjusted to be the target dew point temperature, the temperature of the environmental cabin is controlled to be the target environmental temperature, the target dew point temperature is lower than the target environmental temperature, the electromagnetic valve is prevented from icing in the low-temperature test process of the air supply unit, and the low-temperature test efficiency of the air supply unit is improved.
In some embodiments of the present disclosure, a dew point gauge 15 is located within the environmental chamber, the dew point gauge 15 being coupled to the air suspension system 11 for measuring the dew point temperature of the air suspension system 11.
In some embodiments of the present disclosure, a switch 16 is mounted on the conduit between the external air supply 13 and the air suspension system 11, with the switch 16 in an on state, the external air supply 13 injects compressed air into the air suspension system 11.
In some embodiments of the present disclosure, the external air source 13 includes: a supercharger 131 and a dryer 132. A supercharger 131 for compressing an external gas to obtain a compressed gas; and a dryer 132 pipe-connected to the booster 131 for primarily drying the compressed gas.
In some embodiments of the present disclosure, the rise and fall of the internal pressure of the air suspension system is controlled after the air suspension system is filled with compressed gas from an external gas source. After the compressed gas is filled into the air suspension system by an external gas source, the pressure of the air suspension system is a first pressure, and the dew point temperature of the air suspension system is a first temperature; controlling the temperature of the environmental chamber to be reduced to a second temperature, wherein the second temperature is lower than the first temperature; opening a fourth reversing valve and an exhaust valve of the air suspension system, reducing the air suspension system to a second pressure, wherein the dew point temperature of the air suspension system is a third temperature, and the third temperature is less than the second temperature; closing a fourth reversing valve and an exhaust valve of the air suspension system; controlling the temperature of the environmental chamber to be reduced to a fourth temperature, wherein the fourth temperature is higher than the third temperature; the internal pressure of the air suspension system is controlled to rise and fall for a plurality of times until the dew point temperature of the air suspension system is adjusted to the target dew point temperature.
In the above embodiment, the internal pressure of the air suspension system is controlled to go up and down once. One way of realizing the method is that the first reversing valve and the fourth reversing valve are opened, the compressor is started, the internal pressure of the air suspension system is increased to the first pressure, and the dew point temperature of the air suspension system is a fifth temperature, wherein the fifth temperature is smaller than the fourth temperature; and opening the fourth reversing valve and the exhaust valve, reducing the internal pressure of the air suspension system to the second pressure, enabling the dew point temperature of the air suspension system to be sixth temperature, enabling the sixth temperature to be less than or equal to the fourth temperature, and closing the fourth reversing valve and the exhaust valve.
In some embodiments of the present disclosure, the air suspension system 11 is able to make the target dew point temperature lower than the target ambient temperature through at least one rise and fall of the internal pressure, determining that the low temperature test of the air supply unit 111 is being performed normally. The following description will be made of the rise and fall of the air suspension system 11 in terms of the multiple pressures.
Step one: the external air source 13 is utilized to initially fill the air suspension system 11 to P0, at this time, the dew point temperature of the compressed air in the air suspension system 11 is T0, for example, T0 is 0 ℃, and the internal initial pressure P0 of the air suspension system 11 is 9bar; reducing the temperature of the environmental chamber 12 to T1, e.g., T1 is 5 ℃, T1>0 ℃;
step two: the air suspension system 11 opens the reversing valve 4 and the exhaust valve, reduces the internal pressure of the air suspension system 11 to P1, for example, the internal pressure of the air suspension system 11 is 2bar, and at this time, the dew point temperature T1' of the air suspension system 11, where T1' < < T1, for example, T1' is-10 ℃, and closes the reversing valve 4 and the exhaust valve after the completion of the work;
step three: reducing the temperature of the environmental chamber 12 to T2, e.g., T2 is-5 ℃, T2 is δ, δ = 5 ℃ higher than T1';
step four: the reversing valve 1 and the reversing valve 4 are opened, and the compressor is started to increase the internal pressure of the air suspension system 11 to P0, at which time the dew point temperature T2', T2' < T2 of the air suspension system 11, for example, T2' = -15 ℃, and the reversing valve 1 and the reversing valve 4 and the motor CM are closed after the completion of the work;
step five: opening the reversing valve 4 and the exhaust valve to reduce the internal pressure of the air suspension system 11 to P1, wherein at the moment, the dew point temperature T2' of the air suspension system 11 is T2' < < T2, for example, T2' is-20 ℃, and closing the reversing valve 4 and the exhaust valve after the work is completed;
step six: lowering the temperature of the environmental chamber 12 to T3, e.g., T3 is-15 ℃, T3 is δ higher than T2 ";
step seven: opening the reversing valve 1 and the reversing valve 4, and starting the compressor to increase the internal pressure of the air suspension system 11 to P0, at which time the dew point temperature T3', T3' < T3 of the air suspension system 11, for example, T3' is-25 ℃, and closing the reversing valve 1, the reversing valve 4, and the compressor after the completion of the work;
step eight: repeating steps four and five until the target dew point temperature of the air suspension system 11 is below the target ambient temperature, e.g., -40 ℃; the electromagnetic valve can be ensured not to generate icing in the low-temperature test process of the air supply unit;
step nine: the low temperature test process of the air supply unit 111 is normally performed.
In some embodiments of the present disclosure, the air supply unit cryogenic test system 10 may also eliminate the dew point meter 15. The temperature of the environmental chamber 12 is regulated, and the reduction amplitude of the temperature of the environmental chamber can be calibrated through the icing condition of the electromagnetic valve. For example, the temperature of the environmental chamber 12 is reduced to-10 ℃, and whether the solenoid valve is frozen or not is observed; if the electromagnetic valve is not frozen, the temperature of the environmental chamber 12 is reduced to-12 ℃, whether the electromagnetic valve is frozen or not is observed again until the electromagnetic valve is frozen, the reduction amplitude of the temperature of the environmental chamber 12 is calibrated, and the reduced temperature of the environmental chamber 12 is higher than the dew point temperature of the air suspension system 11.
In the above system embodiments of the present disclosure, an air supply unit cryogenic test system includes: the air suspension system is positioned in the environmental cabin; the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system; the environment cabin is used for providing a containing space for the air suspension system for the low-temperature test; and the controller is used for controlling the rise and fall of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature, and controlling the temperature of the environmental cabin to be the target environmental temperature so as to enable the target dew point temperature to be lower than the target environmental temperature, preventing the electromagnetic valve from icing in the low-temperature test process of the air supply unit and improving the low-temperature test efficiency of the air supply unit.
Fig. 3 is a flow chart of a low temperature test method for an air supply unit according to an exemplary embodiment of the present disclosure. As shown in fig. 3, the method includes:
s301: after the compressed gas is filled into the air suspension system by the external air source, controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature;
s302: and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
In the embodiment of the present disclosure, the air supply unit needs to repeatedly switch each solenoid valve when performing a low temperature test. The working medium of the air suspension system is compressed air, the compressed air naturally contains moisture, if the compressed air is not dry enough, the electromagnetic valve can be frozen in the low-temperature test process of the air supply unit, and finally the test cannot be performed, so that the low-temperature test efficiency of the air supply unit is affected. According to the embodiment of the disclosure, the rise and fall of the internal pressure of the air suspension system are controlled, so that the dew point temperature of the air suspension system is adjusted to be the target dew point temperature, the temperature of the environmental cabin is controlled to be the target environmental temperature, the target dew point temperature is lower than the target environmental temperature, the electromagnetic valve is prevented from icing in the low-temperature test process of the air supply unit, and the low-temperature test efficiency of the air supply unit is improved.
In some embodiments of the present disclosure, a dew point meter is located within the environmental chamber, the dew point meter being coupled to the air suspension system for measuring a dew point temperature of the air suspension system.
In some embodiments of the present disclosure, a switch is mounted on a conduit between an external air supply and the air suspension system, with the switch in an on state, the external air supply injects compressed air into the air suspension system.
In some embodiments of the present disclosure, the external air source comprises: a supercharger and a dryer. The supercharger is used for compressing external gas to obtain compressed gas; and the dryer is connected with the supercharger pipeline and is used for drying the compressed gas.
In some embodiments of the present disclosure, the air suspension system is capable of causing the target dew point temperature to be lower than the target ambient temperature through at least one rise and fall of the internal pressure, determining that the low temperature test of the air supply unit is being performed properly. The following description will be made of the rise and fall of the multiple pressures of the air suspension system.
Step one: the method comprises the steps that an external air source is utilized to initially fill the air suspension system to P0, at the moment, the dew point temperature of compressed air in the air suspension system is T0, for example, T0 is 0 ℃, and the internal initial pressure P0 of the air suspension system is 9bar; reducing the temperature of the environmental chamber to T1, e.g., T1 is 5 ℃, T1>0 ℃;
step two: the air suspension system opens the reversing valve 4 and the exhaust valve, reduces the internal pressure of the air suspension system to P1, for example, the internal pressure of the air suspension system is 2bar, and at this time, the dew point temperature T1 'of the air suspension system is less than or equal to T1, for example, T1' is-10 ℃, and closes the reversing valve 4 and the exhaust valve after the work is completed;
step three: reducing the temperature of the environmental chamber to T2, e.g., T2 is-5 ℃, T2 is δ higher than T1', δ = 5 ℃;
step four: opening the reversing valve 1 and the reversing valve 4, and starting the compressor to increase the internal pressure of the air suspension system to P0, at which time the dew point temperature T2', T2' < T2 of the air suspension system, for example, T2' = - °c, and closing the reversing valve 1 and the reversing valve 4 and the motor CM after the completion of the work;
step five: opening the reversing valve 4 and the exhaust valve to reduce the internal pressure of the air suspension system to P1, wherein the dew point temperature T2 'of the air suspension system is less than or equal to T2, for example, T2' is minus 20 ℃, and closing the reversing valve 4 and the exhaust valve after the work is completed;
step six: lowering the temperature of the environmental chamber to T3, e.g., T3 is- °c, T3 is δ higher than T2 ";
step seven: opening the reversing valve 1 and the reversing valve 4, starting the compressor, increasing the internal pressure of the air suspension system to P0, wherein the dew point temperature T3', T3' < T3 of the air suspension system is, for example, T3' is-25 ℃, and closing the reversing valve 1, the reversing valve 4 and the compressor after the work is completed;
step eight: repeating steps four and five until the target dew point temperature of the air suspension system is less than the target ambient temperature, e.g., -40 ℃; the electromagnetic valve can be ensured not to generate icing in the low-temperature test process of the air supply unit;
step nine: the low temperature test procedure of the air supply unit is normally performed.
In some embodiments of the present disclosure, the air supply unit cryogenic test system may also eliminate the dew point meter. The temperature of the environmental chamber is regulated, and the reduction amplitude of the temperature of the environmental chamber can be calibrated through the icing condition of the electromagnetic valve. For example, the temperature of the environmental chamber is reduced to-10 ℃, and whether the electromagnetic valve is frozen or not is observed; if the electromagnetic valve is not frozen, the temperature of the environmental chamber is reduced to-DEG C, whether the electromagnetic valve is frozen or not is observed again, the temperature of the environmental chamber is calibrated by the reduction amplitude of the temperature of the electromagnetic valve until the electromagnetic valve is frozen, and the temperature of the environmental chamber after being reduced is higher than the dew point temperature of the air suspension system.
In the above-described method embodiments of the present disclosure, an air supply unit cryogenic test system includes: the air suspension system is positioned in the environmental cabin; the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system; the environment cabin is used for providing a containing space for the air suspension system for the low-temperature test; and the controller is used for controlling the rise and fall of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature, and controlling the temperature of the environmental cabin to be the target environmental temperature so as to enable the target dew point temperature to be lower than the target environmental temperature, preventing the electromagnetic valve from icing in the low-temperature test process of the air supply unit and improving the low-temperature test efficiency of the air supply unit.
Fig. 4 is a schematic structural view of an air supply unit low temperature test apparatus 40 according to an exemplary embodiment of the present disclosure. As shown in fig. 4, the air supply unit low temperature test apparatus 40 includes: a first control module 41 and a second control module 42.
The first control module 41 is configured to control the rise and fall of the internal pressure of the air suspension system after the compressed gas is filled into the air suspension system from the external air source, so as to adjust the dew point temperature of the air suspension system to a target dew point temperature;
a second control module 42 for controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
Optionally, after the compressed gas is filled into the air suspension system from the external air source, the first control module 41 is configured to:
after the compressed gas is filled into the air suspension system by an external gas source, the pressure of the air suspension system is a first pressure, and the dew point temperature of the air suspension system is a first temperature;
controlling the temperature of the environmental chamber to be reduced to a second temperature, wherein the second temperature is lower than the first temperature;
opening a fourth reversing valve and an exhaust valve of the air suspension system, reducing the air suspension system to a second pressure, wherein the dew point temperature of the air suspension system is a third temperature, and the third temperature is less than the second temperature; closing a fourth reversing valve and an exhaust valve of the air suspension system;
controlling the temperature of the environmental chamber to be reduced to a fourth temperature, wherein the fourth temperature is higher than the third temperature;
the internal pressure of the air suspension system is controlled to rise and fall for a plurality of times until the dew point temperature of the air suspension system is adjusted to the target dew point temperature.
Alternatively, the first control module 41 is configured to, when controlling the internal pressure of the air suspension system to go through one rise and fall:
starting a first reversing valve and a fourth reversing valve, starting a compressor, and increasing the internal pressure of the air suspension system to a first pressure, wherein the dew point temperature of the air suspension system is a fifth temperature, and the fifth temperature is smaller than the fourth temperature;
and opening the fourth reversing valve and the exhaust valve, reducing the internal pressure of the air suspension system to the second pressure, enabling the dew point temperature of the air suspension system to be sixth temperature, enabling the sixth temperature to be less than or equal to the fourth temperature, and closing the fourth reversing valve and the exhaust valve.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 5 is a schematic structural diagram of an electronic device according to an exemplary embodiment of the present disclosure. As shown in fig. 5, the electronic device includes: a memory 51 and a processor 52. In addition, the electronic device further comprises a power supply component 53 and a communication component 54.
The memory 51 is used for storing computer programs and may be configured to store various other data to support operations on the electronic device. Examples of such data include instructions for any application or method operating on an electronic device.
The memory 51 may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
A communication component 54 for data transmission with other devices.
A processor 52, executable computer instructions stored in memory 51, for: after the external air source fills compressed air into the air suspension system, controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be a target dew point temperature; and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
Accordingly, the disclosed embodiments also provide a computer-readable storage medium storing a computer program. The computer-readable storage medium stores a computer program that, when executed by one or more processors, causes the one or more processors to perform the steps in the method embodiment of fig. 3.
Accordingly, the disclosed embodiments also provide a computer program product comprising a computer program/instructions for executing the steps of the method embodiment of fig. 3 by a processor.
The communication assembly of fig. 5 is configured to facilitate wired or wireless communication between the device in which the communication assembly is located and other devices. The device where the communication component is located can access a wireless network based on a communication standard, such as a mobile communication network of WiFi,2G, 3G, 4G/LTE, 5G, etc., or a combination thereof. In one exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
The power supply assembly shown in fig. 5 provides power for various components of the device in which the power supply assembly is located. The power components may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the devices in which the power components are located.
The display screen in fig. 5 described above includes a screen, which may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation.
The electronic device further comprises an audio component.
An audio component, which may be configured to output and/or input an audio signal. For example, the audio component includes a Microphone (MIC) configured to receive external audio signals when the device in which the audio component is located is in an operational mode, such as a call mode, a recording mode, and a speech recognition mode. The received audio signal may be further stored in a memory or transmitted via a communication component. In some embodiments, the audio assembly further comprises a speaker for outputting audio signals.
In the above-described apparatus, device, storage medium, and computer program product embodiments of the present disclosure, an air supply unit cryogenic test system includes: the air suspension system is positioned in the environmental cabin; the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system; the environment cabin is used for providing a containing space for the air suspension system for the low-temperature test; and the controller is used for controlling the rise and fall of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be the target dew point temperature, and controlling the temperature of the environmental cabin to be the target environmental temperature so as to enable the target dew point temperature to be lower than the target environmental temperature, preventing the electromagnetic valve from icing in the low-temperature test process of the air supply unit and improving the low-temperature test efficiency of the air supply unit.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The above is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An air supply unit cryogenic test system comprising: the air suspension system is positioned in the environment cabin;
the external air source is connected with the air suspension system pipeline and is used for filling compressed air into the air suspension system;
the environmental chamber is used for providing a containing space for the air suspension system for low-temperature testing;
the controller is used for controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to a target dew point temperature and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
2. The air supply unit cryogenic test system of claim 1, further comprising: a dew point meter; the dew point meter is positioned in the environment cabin and connected with the air suspension system for measuring the dew point temperature of the air suspension system.
3. The air supply unit cryogenic test system of claim 1, wherein a switch is mounted on a conduit between the external air supply and the air suspension system, the external air supply injecting compressed air into the air suspension system with the switch in an on state.
4. The air supply unit cryogenic test system of claim 1, wherein the external air supply comprises: a supercharger and a dryer;
the supercharger is used for compressing external gas to obtain compressed gas;
and the dryer is connected with the supercharger pipeline and is used for drying the compressed gas.
5. The air supply unit cryogenic test system of claim 1, wherein the air suspension system comprises: air supply unit, air spring and gas holder, the air supply unit includes: a solenoid valve and a motor;
the temperature of the environmental chamber is regulated, and the reduction amplitude of the temperature of the environmental chamber can be calibrated through the icing condition of the electromagnetic valve.
6. An air supply unit low temperature test method is applied to an air supply unit low temperature test system, and is characterized in that the air supply unit low temperature test system comprises: the air suspension system is positioned in the environment cabin; the method comprises the following steps:
after the external air source fills compressed air into the air suspension system, controlling the lifting of the internal pressure of the air suspension system so as to adjust the dew point temperature of the air suspension system to be a target dew point temperature;
and controlling the temperature of the environmental chamber to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
7. The method of claim 6, wherein controlling the rise and fall of the internal pressure of the air suspension system after the external air source fills the air suspension system with compressed air, comprises:
after the external air source fills compressed air into the air suspension system, the pressure of the air suspension system is a first pressure, and the dew point temperature of the air suspension system is a first temperature;
controlling the temperature of the environmental chamber to be reduced to a second temperature, wherein the second temperature is lower than the first temperature;
opening a fourth reversing valve and an exhaust valve of the air suspension system, reducing the air suspension system to a second pressure, wherein the dew point temperature of the air suspension system is a third temperature, and the third temperature is less than the second temperature; closing a fourth reversing valve and an exhaust valve of the air suspension system;
controlling the temperature of the environmental chamber to be reduced to a fourth temperature, wherein the fourth temperature is higher than the third temperature;
and controlling the internal pressure of the air suspension system to rise and fall for a plurality of times until the dew point temperature of the air suspension system is adjusted to be the target dew point temperature.
8. The method of claim 7, wherein controlling the internal pressure of the air suspension system to go through a lift comprises:
starting a first reversing valve and a fourth reversing valve, starting a compressor, and increasing the internal pressure of the air suspension system to a first pressure, wherein the dew point temperature of the air suspension system is a fifth temperature, and the fifth temperature is smaller than the fourth temperature;
and opening a fourth reversing valve and an exhaust valve, reducing the internal pressure of the air suspension system to a second pressure, wherein the dew point temperature of the air suspension system is a sixth temperature, the sixth temperature is less than or equal to the fourth temperature, and closing the fourth reversing valve and the exhaust valve.
9. An air supply unit low temperature test apparatus, comprising:
the first control module is used for controlling the lifting of the internal pressure of the air suspension system after the compressed gas is filled into the air suspension system by the external air source so as to adjust the dew point temperature of the air suspension system to be a target dew point temperature;
and the second control module is used for controlling the temperature of the environmental cabin to a target environmental temperature, wherein the target dew point temperature is lower than the target environmental temperature.
CN202310782468.XA 2023-06-29 Low-temperature test method, system and device for air supply unit Active CN116858577B (en)

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