Device and method for testing sensor of atmospheric sensing system

Abstract

The invention relates to the technical field of aerospace, and discloses equipment and a method for testing sensors of an atmospheric sensing system. The equipment comprises a shell, a battery unit, a driving unit, a turbine unit, a heating unit, a guide pipe and a control unit, an air inlet and an air outlet are formed in the shell, the guide pipe is connected with the air outlet and used for guiding air from the air outlet to a sensor to be detected, and the battery unit is used for supplying power to the driving unit, the heating unit and the control unit; the driving unit is used for driving the turbine unit to rotate to drive air to flow to the air outlet at a preset speed; the heating unit is arranged at the air outlet and used for heating the air before the air flows out of the air outlet; and the control unit is used for determining a test mode according to the test instruction, controlling the driving unit and the heating unit to be turned on according to the determined test mode, respectively adjusting the driving unit and the heating unit to corresponding gears, and controlling the driving unit and the heating unit to be turned off after a preset time so as to test the sensor to be tested in the corresponding mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace technology, and in particular to a sensor testing device and method for an atmospheric sensing system. BACKGROUND

[0002] The atmospheric sensing system is widely used on aircraft in the field of aerospace technology, and provides important parameters such as incoming flow atmosphere and flight attitude for the aircraft, and is an important part of the aircraft control system. The atmospheric sensing system usually includes several pressure sensors and temperature sensors, which need to be tested in working state at the component level, device level and full missile level. When the sensors are assembled into devices or even aircraft at the device level and full missile level, the test environment is distributed in multiple different workshops and fields.

[0003] The existing sensor testing system mainly tests component-level sensors, and is relatively bulky. Therefore, a safe and convenient sensor testing method for the atmospheric sensing system is needed for the variable test environment at the device level and full missile level. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a sensor testing device and method for an atmospheric sensing system, which can solve the problems in the prior art.

[0005] The technical solution of the present application is a sensor testing device for an atmospheric sensing system, wherein the device includes a housing, a battery unit, a driving unit, a turbine unit, a heating unit, a conduit and a control unit, the battery unit, the driving unit, the turbine unit, the heating unit and the control unit are arranged in the housing, an air inlet and an air outlet are arranged on the housing, the conduit is connected with the air outlet for guiding air from the air outlet to the sensor to be tested,

[0006] The battery unit is used to power the driving unit, the heating unit and the control unit;

[0007] The driving unit is used to drive the turbine unit to rotate to drive air to flow to the air outlet at a predetermined speed;

[0008] The heating unit is arranged at the air outlet and is used to heat the air before it flows out of the air outlet;

[0009] The control unit is used to determine the test mode according to the test instruction, control the driving unit and the heating unit to be opened and adjusted to the corresponding gear respectively according to the determined test mode, and control the driving unit and the heating unit to be closed after a predetermined time, so as to test the sensor to be tested in the corresponding mode.

[0010] Preferably, when the determined test mode is the pressure test mode, the control unit controls the driving unit to open and adjust to the highest gear, controls the heating unit to open and adjust to the zero power gear, and controls the driving unit and the heating unit to close after a predetermined time, the control unit respectively acquires first pressure test data of the sensor to be tested when the driving unit and the heating unit are opened and second pressure test data of the sensor to be tested after the driving unit and the heating unit are closed, compares the first pressure test data with the second pressure test data, and determines that the sensor to be tested is working normally if the first pressure test data is greater than the second pressure test data, the difference between the first pressure test data and the second pressure test data is greater than a predetermined value, and the difference is stable.

[0011] Preferably, when the determined test mode is the temperature test mode, the control unit controls the driving unit to open and adjust to the lowest gear, controls the heating unit to open and adjust to the highest power gear, and controls the driving unit and the heating unit to close after a predetermined time, the control unit respectively acquires first temperature test data of the sensor to be tested when the driving unit and the heating unit are opened and second temperature test data of the sensor to be tested after the driving unit and the heating unit are closed, and determines that the sensor to be tested is working normally if the first temperature test data rises to a predetermined temperature during the opening of the driving unit and the heating unit and the second temperature test data returns to the normal temperature after the driving unit and the heating unit are closed.

[0012] Preferably, the driving unit is a direct current motor.

[0013] Preferably, the battery unit is a lithium battery unit.

[0014] Preferably, the conduit is a rubber tube or a metal tube, and the heating unit is an electric heating wire.

[0015] Preferably, the control unit is a control circuit board, and the control circuit board comprises a first switch and adjustment circuit and a second switch and adjustment circuit, the first switch and adjustment circuit is used for controlling the opening and closing and gear adjustment of the driving unit, and the second switch and adjustment circuit is used for controlling the opening and closing and gear adjustment of the heating unit.

[0016] The application further provides a sensor test method of an atmospheric sensing system, and the method comprises the following steps:

[0017] The battery unit is used to supply power for the driving unit, the heating unit and the control unit, wherein the battery unit, the driving unit, the turbine unit, the heating unit and the control unit are arranged in the shell, the shell is provided with an air inlet and an air outlet, the air outlet is connected with a pipeline for guiding air from the air outlet to the sensor to be tested, and the driving unit is used to drive the turbine unit to rotate to drive air to flow to the air outlet at a predetermined speed, and the heating unit is arranged at the air outlet and used to heat air before the air flows out of the air outlet.

[0018] The control unit is used to determine a test mode according to a test instruction, control the driving unit and the heating unit to be turned on and adjusted to corresponding gears respectively according to the determined test mode, and control the driving unit and the heating unit to be turned off after a predetermined time, so as to test the sensor to be tested in the corresponding mode.

[0019] Preferably, when the determined test mode is a pressure measurement mode, the control unit controls the driving unit to be turned on and adjusted to the highest gear, controls the heating unit to be turned on and adjusted to a zero-power gear, and controls the driving unit and the heating unit to be turned off after a predetermined time, the control unit respectively acquires first pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned off, compares the first pressure measurement data with the second pressure measurement data, and determines that the sensor to be tested works normally if the first pressure measurement data is greater than the second pressure measurement data and a difference between the first pressure measurement data and the second pressure measurement data is greater than a predetermined value and the difference is stable.

[0020] Preferably, when the determined test mode is a temperature measurement mode, the control unit controls the driving unit to be turned on and adjusted to the lowest gear, controls the heating unit to be turned on and adjusted to a highest-power gear, and controls the driving unit and the heating unit to be turned off after a predetermined time, the control unit respectively acquires first temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned off, and determines that the sensor to be tested works normally if the first temperature measurement data rises to a predetermined temperature during the driving unit and the heating unit are turned on and the second temperature measurement data returns to a normal temperature after the driving unit and the heating unit are turned off.

[0021] By the above technical solution, the component-level and full-bomb-level sensors can be tested, and it can be quickly and accurately determined whether the sensor works normally, which is suitable for all ground test environments such as factory buildings and external fields, and has the advantages of safety, convenience, rapidity and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is to be understood that the drawings are solely for purposes of illustration and that they are not limiting of the application.

[0023] Figure 1 A schematic diagram of a sensor testing method of an atmospheric sensing system according to an embodiment of the application. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will now be described in detail with reference to the following drawings. In the following description, for the purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the present application can be practiced in other embodiments that depart from these specific details.

[0025] It is to be noted that, in order to avoid obscuring the present application with unnecessary details, only the device structures and / or processing steps closely related to the solution according to the present application are shown in the drawings, while other details not closely related to the present application are omitted.

[0026] The present application provides a sensor testing device of an atmospheric sensing system, wherein the device comprises a housing, a battery unit, a driving unit, a turbine unit, a heating unit, a conduit and a control unit, the battery unit, the driving unit, the turbine unit, the heating unit and the control unit are arranged in the housing, an air inlet (air inlet) and an air outlet (air outlet) are arranged on the housing, the conduit is connected with the air outlet and used for guiding air from the air outlet to a sensor to be tested,

[0027] The battery unit is used for supplying power to the driving unit, the heating unit and the control unit.

[0028] The driving unit is used for driving the turbine unit to rotate so as to drive air to flow to the air outlet at a predetermined speed.

[0029] The heating unit is arranged at the air outlet and used for heating air before the air flows out of the air outlet.

[0030] The control unit is used for determining a test mode according to a test instruction, controlling the driving unit and the heating unit to be turned on and adjusted to corresponding gears respectively according to the determined test mode, and controlling the driving unit and the heating unit to be turned off after a predetermined time, so as to test the sensor to be tested in the corresponding mode.

[0031] By setting the shell, the components inside the shell can be protected.

[0032] The technical scheme can test the component-level and full-missile-level sensor, quickly and accurately determine whether the sensor is in normal working state, and is suitable for all ground test environments such as factory buildings and fields, and has the advantages of safety, convenience, rapidity and reliability.

[0033] According to an embodiment of the present application, when the determined test mode is the pressure measurement mode, the control unit controls the driving unit to be turned on and adjusted to the highest gear, controls the heating unit to be turned on and adjusted to the zero power gear, and controls the driving unit and the heating unit to be turned off after a predetermined time. The control unit respectively acquires first pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second pressure measurement data of the sensor to be tested after the driving unit and the heating unit are turned off, compares the first pressure measurement data with the second pressure measurement data, and determines that the sensor to be tested is in normal working state if the first pressure measurement data is greater than the second pressure measurement data and the difference between them is greater than a predetermined value and the difference is stable.

[0034] That is, if the pressure data measured by the sensor when the test equipment is turned on is higher than that when the test equipment is turned off and the difference between them is greater than a predetermined value and the difference is stable, the sensor is in normal working state.

[0035] In the pressure measurement mode, the predetermined time is, for example, one minute.

[0036] According to an embodiment of the present application, when the determined test mode is the temperature measurement mode, the control unit controls the driving unit to be turned on and adjusted to the lowest gear, controls the heating unit to be turned on and adjusted to the highest power gear, and controls the driving unit and the heating unit to be turned off after a predetermined time. The control unit respectively acquires first temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second temperature measurement data of the sensor to be tested after the driving unit and the heating unit are turned off, and determines that the sensor to be tested is in normal working state if the first temperature measurement data rises to a predetermined temperature during the driving unit and the heating unit are turned on and the second temperature measurement data returns to normal temperature after the driving unit and the heating unit are turned off.

[0037] That is, if the temperature of the sensor gradually rises after the test equipment is turned on and the temperature of the sensor quickly returns to normal temperature after the test equipment is turned off, the sensor is in normal working state.

[0038] In the temperature measurement mode, the predetermined time is, for example, two to three minutes.

[0039] In each test mode, the sensor to be tested is powered on and the measurement data of the sensor is recorded.

[0040] According to an embodiment of the present application, the driving unit is a direct current motor.

[0041] According to an embodiment of the present application, the battery unit is a lithium battery unit.

[0042] By using the lithium battery unit, the testing device can be portable.

[0043] According to an embodiment of the present application, the conduit is a rubber tube or a metal tube, and the heating unit is an electric heating wire.

[0044] Specifically, in the pressure measurement mode, one end of the rubber tube is connected to the air outlet of the testing device, and the other end is sealed against the wall surface near the air inlet of the sensor, and the air outlet of the testing device is directly opposite the air inlet of the sensor, thereby forming a stable testing environment; in the temperature measurement mode, one end of the metal tube is connected to the air outlet of the testing device, and the other end is kept at a predetermined gap (for example, 1-5 cm) from the wall surface near the sensor, and the air outlet of the testing device is directly opposite the sensor, thereby forming a stable testing environment.

[0045] By installing the electric heating wire near the air outlet, the outflowing air can be heated.

[0046] According to an embodiment of the present application, the control unit is a control circuit board, which comprises a first switch and adjustment circuit and a second switch and adjustment circuit, the first switch and adjustment circuit being used for controlling the opening and closing and gear adjustment of the driving unit, and the second switch and adjustment circuit being used for controlling the opening and closing and gear adjustment of the heating unit.

[0047] That is, the control circuit board is used for switch control and gear adjustment of the driving unit and the heating unit.

[0048] The embodiment of the present application also provides a sensor testing method for an atmospheric sensing system, wherein the method comprises:

[0049] The battery unit is used for supplying power to the driving unit, the heating unit and the control unit, wherein the battery unit, the driving unit, the turbine unit, the heating unit and the control unit are arranged in the shell, the shell is provided with an air inlet and an air outlet, the air outlet is connected with a conduit for guiding air from the air outlet to a sensor to be tested, the driving unit is used for driving the turbine unit to rotate to drive air to flow to the air outlet at a predetermined speed, and the heating unit is arranged at the air outlet and used for heating the air before the air flows out of the air outlet.

[0050] The control unit determines a test mode according to the test instruction, controls the driving unit and the heating unit to open and respectively adjust to corresponding gears according to the determined test mode, and controls the driving unit and the heating unit to close after a predetermined time, so as to test the to-be-tested sensor in the corresponding mode.

[0051] The above technical solution can test the component-level and full-missile-level sensor, can quickly and accurately determine whether the sensor is in a normal working state, is suitable for all ground test environments such as a factory building and a field, and has the advantages of safety, convenience, rapidity and reliability.

[0052] According to an embodiment of the present application, when the determined test mode is a pressure measurement mode, the control unit controls the driving unit to open and adjust to the highest gear, controls the heating unit to open and adjust to the gear with zero power, and controls the driving unit and the heating unit to close after a predetermined time. The control unit respectively acquires first pressure measurement data of the to-be-tested sensor when the driving unit and the heating unit are opened and second pressure measurement data of the to-be-tested sensor after the driving unit and the heating unit are closed, compares the first pressure measurement data with the second pressure measurement data, and determines that the to-be-tested sensor is in a normal working state if the first pressure measurement data is greater than the second pressure measurement data, the difference between the first pressure measurement data and the second pressure measurement data is greater than a predetermined value, and the difference is stable.

[0053] According to an embodiment of the present application, when the determined test mode is a temperature measurement mode, the control unit controls the driving unit to open and adjust to the lowest gear, controls the heating unit to open and adjust to the gear with the highest power, and controls the driving unit and the heating unit to close after a predetermined time. The control unit respectively acquires first temperature measurement data of the to-be-tested sensor when the driving unit and the heating unit are opened and second temperature measurement data of the to-be-tested sensor after the driving unit and the heating unit are closed, and determines that the to-be-tested sensor is in a normal working state if the first temperature measurement data rises to a predetermined temperature during the opening of the driving unit and the heating unit and the second temperature measurement data returns to a normal temperature after the closing of the driving unit and the heating unit.

[0054] The sensor test method of the atmospheric sensing system according to the present application is described below in combination with examples.

[0055] In this example, the sensor of an atmospheric sensing system of an aircraft is tested (tested) in a factory building by using the method according to the present application, and the steps are as follows:

[0056] 1. Install a rubber tube: one end of the rubber tube is connected to the air outlet of a test device, and the other end is abutted against the wall of the aircraft near the air inlet of the sensor to form a seal, the air outlet of the test device is directly opposite the air inlet of the sensor, and a stable test environment is formed;

[0057] 2. Sensor under test is powered on and data is recorded by the measurement system;

[0058] 3. Start the test equipment in pressure measurement mode: start the test equipment, set the DC motor to the highest gear and the heating wire power to zero, this is the pressure measurement mode;

[0059] 4. Turn off the equipment: turn off the test equipment after one minute of operation;

[0060] 5. Replace the test object, repeat steps 3-4 to complete the test of multiple pressure sensors;

[0061] 6. Judge the data: turn off the atmospheric sensing system, read the pressure measurement data of the sensor, if the pressure data measured by the corresponding sensor when the test equipment is on is at least 6 kPa higher than when the test equipment is off, and the difference is stable, determine that all pressure sensors are working properly.

[0062] 7. Install the metal pipe: remove the rubber pipe, connect one end of the metal pipe to the air outlet of the test equipment, and keep the other end at a certain gap (1-5 cm) from the wall near the sensor. The air outlet of the test equipment is directly opposite the sensor, forming a stable test environment;

[0063] 8. Sensor under test is powered on and data is recorded by the measurement system;

[0064] 9. Start the test equipment in temperature measurement mode: start the test equipment, set the DC motor to the lowest gear and the heating wire power to the highest, this is the temperature measurement mode;

[0065] 10. Turn off the equipment: turn off the test equipment after two minutes of operation;

[0066] 11. Replace the test object, repeat steps 9-10 to complete the test of multiple temperature sensors;

[0067] 12. Judge the data: turn off the atmospheric sensing system, read the temperature measurement data of the sensor, if the temperature of the corresponding sensor gradually rises to 265℃ after the test equipment is turned on, and the temperature of the sensor quickly returns to room temperature after the test equipment is turned off, determine that all temperature sensors are working properly.

[0068] Features described and / or illustrated with respect to one embodiment above can be used in the same or similar manner in one or more other embodiments, and / or in combination with or in place of features in other embodiments.

[0069] It should be emphasized that the term "comprises / comprising" when used in this text refers to the presence of a feature, item, step or component, but does not exclude the presence or addition of one or more other features, items, steps, components or combinations thereof.

[0070] The above apparatus and methods of the present application can be realized by hardware, or by hardware combined with software. The present application relates to a computer readable program that, when executed by a logic device, enables the logic device to realize the above-described apparatus or constituent components, or to realize the above-described various methods or steps. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0071] Many of the features and advantages of the embodiments can be better understood from the detailed description that follows with reference to the drawings, it is intended that all such additional features and advantages be included within this description, be within the scope of the embodiments, and be encompassed by the claims. Moreover, it is intended that any modification but within the spirit and scope of the embodiments will come within the scope of the embodiments. Accordingly, the scope of the embodiments is to be construed as not limited to the precise details of the embodiments shown.

[0072] Portions of the present application that are not specifically described herein are well known to those skilled in the art.

Claims

1. An atmospheric sensing system sensor test apparatus, characterized by, The device comprises a shell, a battery unit, a driving unit, a turbine unit, a heating unit, a conduit and a control unit, the battery unit, the driving unit, the turbine unit, the heating unit and the control unit are arranged in the shell, an air inlet and an air outlet are arranged on the shell, the conduit is connected with the air outlet and used for guiding air from the air outlet to a sensor to be tested, The battery unit is used for supplying power to the driving unit, the heating unit and the control unit. The driving unit is used for driving the turbine unit to rotate to drive air to flow to the air outlet at a predetermined speed. The heating unit is arranged at the air outlet and used for heating air before the air flows out of the air outlet. The control unit is used for determining a test mode according to a test instruction, controlling the driving unit and the heating unit to be turned on and adjusted to corresponding gears respectively according to the determined test mode, and controlling the driving unit and the heating unit to be turned off after a predetermined time, so as to test the sensor to be tested in the corresponding mode.

2. The apparatus of claim 1, wherein, When the determined test mode is a pressure measurement mode, the control unit controls the driving unit to be turned on and adjusted to the highest gear, controls the heating unit to be turned on and adjusted to a zero-power gear, and controls the driving unit and the heating unit to be turned off after a predetermined time, the control unit respectively acquires first pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned off, and compares the first pressure measurement data with the second pressure measurement data, if the first pressure measurement data is greater than the second pressure measurement data and a difference between the first pressure measurement data and the second pressure measurement data is greater than a predetermined value and the difference is stable, it is determined that the sensor to be tested works normally.

3. The apparatus of claim 1, wherein, When the determined test mode is a temperature measurement mode, the control unit controls the driving unit to be turned on and adjusted to the lowest gear, controls the heating unit to be turned on and adjusted to a highest-power gear, and controls the driving unit and the heating unit to be turned off after a predetermined time, the control unit respectively acquires first temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned off, if the first temperature measurement data rises to a predetermined temperature during the driving unit and the heating unit are turned on and the second temperature measurement data returns to a normal temperature after the driving unit and the heating unit are turned off, it is determined that the sensor to be tested works normally.

4. The apparatus according to any one of claims 1-3, characterized in that, The driving unit is a direct-current motor.

5. The apparatus of any one of claims 1-3, wherein, The battery unit is a lithium battery unit.

6. The apparatus of any one of claims 1-3, wherein, The conduit is a rubber tube or a metal tube, and the heating unit is an electric heating wire.

7. The apparatus of any one of claims 1-3, wherein, The control unit is a control circuit board, the control circuit board comprises a first switch and adjustment circuit and a second switch and adjustment circuit, the first switch and adjustment circuit is used for controlling opening and closing and gear adjustment of the driving unit, and the second switch and adjustment circuit is used for controlling opening and closing and gear adjustment of the heating unit.

8. An atmospheric sensing system sensor testing method, characterized by, The method comprises: The battery unit is used to supply power for the driving unit, the heating unit and the control unit, wherein the battery unit, the driving unit, the turbine unit, the heating unit and the control unit are arranged in the shell, the shell is provided with an air inlet and an air outlet, the air outlet is connected with a conduit for guiding air from the air outlet to the sensor to be tested, wherein the driving unit is used to drive the turbine unit to rotate to drive air to flow to the air outlet at a predetermined speed, and the heating unit is arranged at the air outlet and used to heat air before the air flows out of the air outlet. The control unit is used to determine a test mode according to a test instruction, control the driving unit and the heating unit to be turned on and adjusted to corresponding gears respectively according to the determined test mode, and control the driving unit and the heating unit to be turned off after a predetermined time, so as to test the sensor to be tested in the corresponding mode.

9. The method of claim 8, wherein, When the determined test mode is a pressure measurement mode, the control unit controls the driving unit to be turned on and adjusted to the highest gear, controls the heating unit to be turned on and adjusted to the gear with zero power, and controls the driving unit and the heating unit to be turned off after a predetermined time, the control unit respectively acquires first pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second pressure measurement data of the sensor to be tested when the driving unit and the heating unit are turned off, and compares the first pressure measurement data with the second pressure measurement data, if the first pressure measurement data is greater than the second pressure measurement data and the difference between the first pressure measurement data and the second pressure measurement data is greater than a predetermined value and the difference is stable, it is determined that the sensor to be tested works normally.

10. The method of claim 8, wherein, When the determined test mode is a temperature measurement mode, the control unit controls the driving unit to be turned on and adjusted to the lowest gear, controls the heating unit to be turned on and adjusted to the gear with the highest power, and controls the driving unit and the heating unit to be turned off after a predetermined time, the control unit respectively acquires first temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned on and second temperature measurement data of the sensor to be tested when the driving unit and the heating unit are turned off, if the first temperature measurement data rises to a predetermined temperature during the driving unit and the heating unit are turned on and the second temperature measurement data returns to normal temperature after the driving unit and the heating unit are turned off, it is determined that the sensor to be tested works normally.

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