General aerospace sensor test equipment

Abstract

In the aerospace field, sensors are widely used for environment signal acquisition. The invention relates to general aerospace sensor test equipment. The lower computer equipment is controlled through the industrial personal computer, a required detected environment is provided for the sensor, signals such as voltage and frequency output by the sensor are automatically collected, data are stored in a database, and the data are output as a spreadsheet.

Description

Technical Field

[0001] The invention belongs to the technical field of testing equipment, in particular to a general aerospace sensor testing equipment. Background Art

[0002] In the field of aerospace, sensors are devices that can sense and measure environmental variables at any time. They can obtain various required physical parameters in real time and provide data support for aerospace equipment. They are widely used in the control systems, safety protection, and detection systems of aerospace equipment.

[0003] At present, after aerospace sensors are delivered to the overall unit, there is a risk that the sensor accuracy will decrease during transportation and storage. Therefore, the overall unit needs to test the sensor performance before receiving the sensor and assembling it into the product. In addition to the recording errors caused by human factors, the traditional manual testing method can also easily cause damage to the sensor due to differences between models and incorrect power supply value settings. In addition, in the aerospace field, the equipment research and development process is relatively long, and test equipment is generally developed according to different models of sensors, resulting in a large waste of manpower, materials, and time costs. The present invention solves the above problems by inventing a universal automatic testing device for aerospace sensors. Summary of the invention

[0004] The purpose of the present invention is: the present invention designs a universal aerospace sensor testing device to provide the test environment required by sensors commonly used in aerospace equipment, automatically collects signals such as voltage and frequency output by the sensor, stores the data in a database and outputs it as a spreadsheet.

[0005] The technical solution of the present invention is: a general aviation and aerospace sensor testing device, including an industrial computer and a slave device;

[0006] The industrial computer integrates a control system and a data storage module. The lower computer equipment includes a power supply, an air source, a pressure controller, a high and low temperature box, a switch card, a multimeter, a frequency meter and a transfer circuit board. A database of test data is established in the data storage module. One end of the switch card is connected to the power supply, and the other end is connected to the transfer circuit board. The transfer circuit board is used to adapt to various types of sensors. The multimeter is connected to the switch card to display the status of the switch card.

[0007] When working, the control system of the industrial computer issues control instructions to make the gas source, pressure controller, high and low temperature box, switch card, multimeter, frequency meter and adapter circuit board work; by controlling the working state of the gas source, pressure controller and high and low temperature box or setting their working parameters, the test environment reaches the target pressure and target temperature; the sensor under test is put into working state and the sensor under test is placed in the test environment;

[0008] The sensor signals tested by the multimeter and the frequency meter are collected and recorded in the database; the database records the corresponding sensor signals under different temperatures and / or different pressures; the industrial computer has a data export function, and the records in the database can be exported after the test is completed.

[0009] Furthermore, the export function can generate a spreadsheet.

[0010] Furthermore, the database records different temperatures, which are sorted according to the temperature variation rules, and corresponds to the sensor signals of each temperature.

[0011] Furthermore, the database records different pressures and is sorted according to the pressure change rules, corresponding to sensor signals of various temperatures.

[0012] Furthermore, one end of the adapter circuit board is connected to the switch card, and the other end is connected to the sensor to be tested. The adapter circuit board has interfaces for multiple sensors and can be adapted to multiple types of sensors.

[0013] Furthermore, the industrial computer communicates with the lower computer equipment through the network port, RS232 and RS485 communication methods to send instructions and receive signals.

[0014] Furthermore, the industrial computer communicates with the gas source via an RS485 communication line.

[0015] Furthermore, the industrial computer communicates with the pressure controller via an RS232 communication line.

[0016] Furthermore, the industrial computer communicates with the power supply via a RS232 communication line.

[0017] Furthermore, the industrial computer communicates with the multimeter via a network port.

[0018] Furthermore, the industrial computer communicates with the frequency meter through the network port.

[0019] Furthermore, the transfer circuit board includes wiring terminals, sockets and components, and the sockets are connected to the multimeter and the switch card through plugs.

[0020] Furthermore, the control system of the industrial computer sets a range for the temperature and pressure signals, which will not exceed the limit, thus preventing unsafe conditions from occurring.

[0021] During the test, the industrial computer collects temperature and pressure signals at all times. When the temperature and pressure values ​​exceed the set range, the high and low temperature box and pressure controller are turned off to protect the sensor.

[0022] After the test is completed, the industrial computer will output the test results to a spreadsheet. Turn off the high and low temperature box, pressure controller, gas source and other lower-level equipment.

[0023] The advantages and beneficial effects of the present invention are:

[0024] 1. It replaces the traditional manual testing method and avoids errors caused by human factors.

[0025] 2. The system is integrated and easy to operate. Users do not need special training, and misoperation will not cause destructive consequences.

[0026] 3. Over-temperature and over-pressure alarm: Real-time monitoring of temperature and pressure functions, monitoring once every 1 second. If the temperature and pressure exceed the setting, the high and low temperature box and pressure controller will be stopped.

[0027] 5. Data authenticity management (qualification criteria): The original data is recorded in the database and cannot be modified by the operator.

[0028] 6. In the field of aerospace, the equipment development cycle is relatively long. In the present invention, different types of sensors can be tested by replacing the adapter circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a cross-linking diagram of the system of the present invention. DETAILED DESCRIPTION

[0030] The disclosed examples will be more fully described with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described and these examples should not be construed as limited to the examples set forth herein. Instead, these examples are described so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

[0031] like Figure 1 As shown, a general aerospace sensor testing device includes an industrial computer and a lower computer device;

[0032] The industrial computer integrates a control system and a data storage module. The lower computer equipment includes a power supply, an air source, a pressure controller, a high and low temperature box, a switch card, a multimeter, a frequency meter and a transfer circuit board. A database of test data is established in the data storage module. One end of the switch card is connected to the power supply, and the other end is connected to the transfer circuit board. The transfer circuit board is used to adapt to various types of sensors. The multimeter is connected to the switch card to display the status of the switch card.

[0033] When working, the control system of the industrial computer issues control instructions to make the gas source, pressure controller, high and low temperature box, switch card, multimeter, frequency meter and adapter circuit board work; by controlling the working state of the gas source, pressure controller and high and low temperature box or setting their working parameters, the test environment reaches the target pressure and target temperature; the sensor under test is put into working state and the sensor under test is placed in the test environment;

[0034] The sensor signals tested by the multimeter and the frequency meter are collected and recorded in the database; the database records the corresponding sensor signals under different temperatures and / or different pressures; the industrial computer has a data export function, and the records in the database can be exported after the test is completed.

[0035] The export function can generate a spreadsheet.

[0036] The database records different temperatures, which are sorted according to the temperature variation rules, and corresponds to the sensor signals of each temperature.

[0037] The database records different pressures and is sorted according to the pressure change rules, corresponding to the sensor signals of each temperature.

[0038] One end of the adapter circuit board is connected to the switch card, and the other end is connected to the sensor to be tested. The adapter circuit board has interfaces for various sensors and can be adapted to various types of sensors.

[0039] The industrial computer communicates with the lower computer equipment through the network port, RS232 and RS485 communication methods to send instructions and receive signals.

[0040] The industrial computer communicates with the gas source via the RS485 communication line.

[0041] The industrial computer communicates with the pressure controller via the RS232 communication line.

[0042] The industrial computer communicates with the power supply via the RS232 communication line.

[0043] The industrial computer communicates with the multimeter through the network port.

[0044] The industrial computer communicates with the frequency meter through the network port.

[0045] The transfer circuit board includes wiring terminals, sockets and components, and the sockets are connected to the multimeter and the switch card through plugs.

[0046] The control system of the industrial computer has set ranges for temperature and pressure signals and will not exceed the limits.

[0047] During the test, the industrial computer collects temperature and pressure signals at all times. The temperature and pressure values ​​will not exceed the set range. When they are close to or reach the limit, the high and low temperature box and pressure controller will be turned off to protect the sensor.

[0048] After the test is completed, the industrial computer will output the test results to a spreadsheet. Turn off the high and low temperature box, pressure controller, gas source and other lower-level equipment.

[0049] The description of different advantageous arrangements has been presented for purposes of illustration and description, but the description is not intended to be exclusive or limited to examples of the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, different advantageous examples may describe different advantages over other advantageous examples. The selected example or examples are chosen and described in order to best illustrate the principles of the examples, the practical application, and to enable those of ordinary skill in the art to understand the disclosure with various examples with various modifications suitable for the particular use contemplated.

Claims

1. A general aviation and aerospace sensor test equipment, characterized in that: Including industrial computers and lower-level equipment; The industrial computer integrates a control system and a data storage module. The lower computer equipment includes a power supply, an air source, a pressure controller, a high and low temperature box, a switch card, a multimeter, a frequency meter and a transfer circuit board. A database of test data is established in the data storage module. One end of the switch card is connected to the power supply, and the other end is connected to the transfer circuit board. The transfer circuit board is used to adapt to various types of sensors. The multimeter is connected to the switch card to display the status of the switch card. When working, the control system of the industrial computer issues control instructions to make the gas source, pressure controller, high and low temperature box, switch card, multimeter, frequency meter and adapter circuit board work; by controlling the working state of the gas source, pressure controller and high and low temperature box or setting their working parameters, the test environment reaches the target pressure and target temperature; the sensor under test is put into working state and the sensor under test is placed in the test environment; The sensor signals tested by the multimeter and the frequency meter are collected and recorded in the database; the database records the corresponding sensor signals under different temperatures and / or different pressures; the industrial computer has a data export function, and the records in the database can be exported after the test is completed.

2. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The export function can generate a spreadsheet.

3. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The database records different temperatures, which are sorted according to the temperature variation rules, and corresponds to the sensor signals of each temperature.

4. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The database records different pressures and is sorted according to the pressure change rules, corresponding to the sensor signals of various temperatures.

5. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: One end of the adapter circuit board is connected to the switch card, and the other end is connected to the sensor to be tested. The adapter circuit board has interfaces for various sensors and can be adapted to various types of sensors.

6. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The industrial computer communicates with the lower computer equipment through the network port, RS232 and RS485 communication methods to send instructions and receive signals.

7. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The industrial computer communicates with the gas source via the RS485 communication line.

8. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The industrial computer communicates with the pressure controller via the RS232 communication line.

9. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The industrial computer communicates with the power supply via the RS232 communication line.

10. A general aviation and aerospace sensor testing device according to claim 1, characterized in that: The industrial computer communicates with the multimeter through the network port.

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