CN213148199U - Testing device of air pressure sensor - Google Patents

Abstract

The utility model discloses a testing device of a baroceptor, comprising a baroceptor, a first inflator pump and a second inflator pump, wherein the first inflator pump is communicated with a first buffer air cavity, the first buffer air cavity is provided with a first air pressure regulating mechanism, the first buffer air cavity is provided with a first pressure gauge, the second inflator pump is communicated with a second buffer air cavity, the second buffer air cavity is provided with a second air pressure regulating mechanism, the second buffer air cavity is provided with a second pressure gauge, the second buffer air cavity is communicated with a dynamic pressure port on the baroceptor through a second pipeline, and the second pipeline is provided with a second control output valve; the utility model discloses a control pump simulation unmanned aerial vehicle is received the pressure value of different air pressure differences at aerial dynamic pressure and static pressure mouth and is examined object machine and carry out the contrast by atmospheric pressure sensor differential pressure data, measures the atmospheric pressure sensor measured data under the different differential pressure values of different settings many times, can obtain more accurate experimental data.

Description

Testing device of air pressure sensor

Technical Field

The utility model relates to an unmanned air vehicle technique field, in particular to baroceptor's testing arrangement.

Background

The air pressure sensor is particularly used as a core component for measuring the air data of the unmanned aerial vehicle, can measure the airspeed and height information of a moving carrier of the unmanned aerial vehicle, and when the air pressure sensor of the unmanned aerial vehicle is detected, there is no effective means for detection, the traditional detection method is a method of blowing air with the mouth or sucking air with the mouth, on one hand, the detection method can cause foreign matters to enter an air pressure inlet pipeline of the air pressure sensor to cause the blockage of the air pressure sensor pipeline, on the other hand, the air inlet pressure of the air pressure sensor is unstable, which can directly influence the accurate value of air pressure measurement and can not carry out effective error parameter compensation on the air pressure sensor, therefore, the test device for the airspeed detection baroceptor of the unmanned aerial vehicle is needed, and by measuring the precision of the baroceptor, an error model can be established and its parameters determined, which in turn improves accuracy through error compensation techniques.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a testing device for a barometric sensor, which can effectively solve the problems in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pressure sensor's testing arrangement, includes baroceptor, pump I and pump II, pump I intercommunication has buffering air cavity one, install atmospheric pressure adjustment mechanism one on the buffering air cavity one, install manometer one on the buffering air cavity one, buffering air cavity one is linked together through the static pressure mouth on pipeline one and the baroceptor, just install control output valve one on the pipeline one, pump II intercommunication has buffering air cavity two, install atmospheric pressure adjustment mechanism two on the buffering air cavity two, install manometer two on the buffering air cavity two, buffering air cavity two is linked together through the dynamic pressure mouth on pipeline two and the baroceptor, just install control output valve two on the pipeline two.

Preferably, the first pressure gauge and the second pressure gauge are both digital pressure precision instruments.

Preferably, the first buffer air cavity is provided with a first air leakage adjusting valve, and the second buffer air cavity is provided with a second air leakage adjusting valve.

Preferably, the first air pressure adjusting mechanism comprises a first coarse adjusting knob and a first fine adjusting knob which are communicated with the first buffer air cavity.

Preferably, the second air pressure adjusting mechanism comprises a second rough adjusting knob and a second fine adjusting knob which are both communicated with the second buffer air cavity.

Preferably, the static pressure port and the dynamic pressure port are connected to the pressure sensor through a pipeline and a clamp respectively.

Compared with the prior art, the utility model discloses the beneficial effect who produces is:

1. this baroceptor's testing arrangement, during the detection, unmanned aerial vehicle pressure sensor check out test set all is located ground, and this check out test set is compared by the airborne baroceptor pressure difference data of object through the pressure value that control pump simulation unmanned aerial vehicle received different atmospheric pressure differences at aerial dynamic pressure and static pressure mouth, measures the baroceptor measured data under the different differential pressure values of different settings many times, can obtain more accurate experimental data.

Drawings

Fig. 1 is a schematic view of the present invention.

In the figure: 1. a first pressure gauge; 2. a first adjusting knob is adjusted roughly; 3. a first buffer air cavity; 4. a first inflator pump; 5. a first pipeline; 6. controlling the first output valve; 7. fine adjustment of a first adjusting knob; 8. a first air leakage regulating valve; 9. a static pressure port; 10. an air pressure sensor; 11. dynamic pressure ports; 12. a second pipeline; 13. controlling an output valve II; 14. fine adjustment of an adjusting knob II; 15. a second pressure gauge; 16. a second adjusting knob is coarsely adjusted; 17. a second buffer air cavity; 18. a second air leakage regulating valve; 19. and a second air pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 1, the testing device for the air pressure sensor comprises an air pressure sensor 10, a first inflator pump 4 and a second inflator pump 19, wherein the first inflator pump 4 is communicated with a first buffer air cavity 3, a first air pressure adjusting mechanism is installed on the first buffer air cavity 3, a first pressure gauge 1 is installed on the first buffer air cavity 3, the first buffer air cavity 3 is communicated with a static pressure port 9 on the air pressure sensor 10 through a first pipeline 5, a first control output valve 6 is installed on the first pipeline 5, the second inflator pump 19 is communicated with a second buffer air cavity 17, a second air pressure adjusting mechanism is installed on the second buffer air cavity 17, a second pressure gauge 15 is installed on the second buffer air cavity 17, the second buffer air cavity 17 is communicated with a dynamic pressure port 11 on the air pressure sensor 10 through a second pipeline 12, and a second control output valve 13 is installed on the second pipeline 12.

In this embodiment, the first pressure gauge 1 and the second pressure gauge 15 are digital pressure precision instruments, so that the precision is improved.

In this embodiment, install out-of-air regulating valve 8 on buffering air cavity 3, install out-of-air regulating valve two 18 on buffering air cavity two 17, lose heart for buffering air cavity, conveniently regulate and control.

In this embodiment, the first air pressure adjusting mechanism includes a coarse adjustment knob one 2 and a fine adjustment knob one 7, which are both communicated with the first buffer air cavity one 3, so as to accurately adjust the air pressure for the first buffer air cavity, thereby facilitating the adjustment and control.

In this embodiment, the second air pressure adjusting mechanism includes a second coarse adjustment knob 16 and a second fine adjustment knob 14, which are both communicated with a second buffer air cavity 17 to accurately adjust the air pressure for the second buffer air cavity, so as to facilitate adjustment and control.

In this embodiment, the static pressure port 9 and the dynamic pressure port 11 are respectively connected to the pressure sensor 10 through a pipeline and a clamp, so that the connection is convenient.

The working principle is as follows: when the equipment detects an air pressure sensor, opening a first air escape valve 8 and a second air escape valve 18, releasing the residual air pressure of a buffer air cavity into a testing environment, pressing a zero calibration key of a first pressure gauge 1 of the digital precision pressure instrument, closing the air escape valves, manually rotating a coarse adjustment knob 2, controlling a first inflator pump 4 to inflate into a first buffer air cavity 3, observing that the first pressure gauge 1 of the digital pressure precision instrument displays the air pressure value in the first buffer air cavity 3, enabling the inner value of the first buffer air cavity 3 to be the set air pressure value by finely adjusting the first adjustment knob 2 when the set air pressure value is approached, and opening a first control output valve 6, so that a certain air pressure value can be applied to a static pressure port 9 of the air pressure sensor 10; manually rotating a second coarse adjustment knob 16 to control a second inflator pump 19 to inflate the second buffer air cavity 17, observing a second pressure gauge 15 of the digital pressure precision instrument to display the air pressure value in the second buffer air cavity 17, when the set air pressure value is approached, enabling the inner value of the second buffer air cavity 17 to be the set air pressure value through the second fine adjustment knob 14, opening a second control output valve 13, applying a certain air pressure value to a dynamic pressure port 11 of the air pressure sensor 10, fixing the air pressure value of the first buffer air cavity 3 to be constant, manually rotating the second coarse adjustment knob 16 to control the second inflator pump 19 to continuously inflate the second buffer air cavity 17, observing the second pressure gauge 16 of the digital pressure precision instrument to display the air pressure value in the second buffer air cavity 17, enabling the air pressure value in the first buffer air cavity 17 to be continuously changed through the second fine adjustment knob 14, and applying different air pressure values to the dynamic pressure port 11 of the air pressure sensor, and measuring the measurement data of the air pressure sensor under different given pressure difference values for multiple times.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (6)

1. The utility model provides a pressure sensor's testing arrangement, includes pressure sensor, pump one and pump two, its characterized in that: the pneumatic pump is communicated with a first buffer air cavity, a first air pressure adjusting mechanism is installed on the first buffer air cavity, a first pressure gauge is installed on the first buffer air cavity, the first buffer air cavity is communicated with a static pressure port on the air pressure sensor through a first pipeline, a first control output valve is installed on the first pipeline, a second buffer air cavity is communicated with the second inflator pump, a second air pressure adjusting mechanism is installed on the second buffer air cavity, a second pressure gauge is installed on the second buffer air cavity, the second buffer air cavity is communicated with a dynamic pressure port on the air pressure sensor through a second pipeline, and a second control output valve is installed on the second pipeline.

2. The apparatus for testing an air pressure sensor according to claim 1, wherein: the first pressure gauge and the second pressure gauge are both digital pressure precision instruments.

3. The apparatus for testing an air pressure sensor according to claim 1, wherein: the buffer air cavity I is provided with an air leakage adjusting valve I, and the buffer air cavity II is provided with an air leakage adjusting valve II.

4. The apparatus for testing an air pressure sensor according to claim 1, wherein: the first air pressure adjusting mechanism comprises a first coarse adjusting knob and a first fine adjusting knob which are communicated with the first buffer air cavity.

5. The apparatus for testing an air pressure sensor according to claim 1, wherein: and the air pressure adjusting mechanism II comprises a coarse adjusting knob II and a fine adjusting knob II which are communicated with the buffer air cavity II.

6. The apparatus for testing an air pressure sensor according to claim 1, wherein: the static pressure port and the dynamic pressure port are respectively connected to the pressure sensor through a pipeline and a clamp.

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