CN220208149U - Automatic test system for atmospheric data computer - Google Patents
Automatic test system for atmospheric data computer Download PDFInfo
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- CN220208149U CN220208149U CN202321409363.1U CN202321409363U CN220208149U CN 220208149 U CN220208149 U CN 220208149U CN 202321409363 U CN202321409363 U CN 202321409363U CN 220208149 U CN220208149 U CN 220208149U
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Abstract
The utility model discloses an automatic test system for an atmospheric data computer, which comprises a temperature box, a control unit and a temperature acquisition display unit, wherein a control terminal of the temperature box is connected to the output end of the control unit, and the temperature box is controlled by the control unit and adjusts the temperature in the temperature box according to a control signal of the control unit; the atmosphere data computer is arranged in the temperature box; the output port of the atmosphere data computer is connected to the acquisition display unit, and the acquisition display unit is used for acquiring and displaying temperature data output by the atmosphere data computer. The utility model has the advantages that: the equipment is adopted for automatic test, the accuracy and the reliability of the atmospheric data computer can be accurately judged according to the test data, the test result is more accurate and reliable, the error of the test result is avoided, and basic test data is provided for replacing or maintaining the atmospheric data computer; the test result is objective, accurate and reliable.
Description
Technical Field
The utility model relates to the field of aviation, in particular to an automatic test system for an atmosphere data computer
Background
The avionic system comprises altitude and airspeed readings, the data is obtained by dynamically monitoring atmospheric data in real time by an atmospheric data computer, the atmospheric data computer is integrated with a data acquisition unit such as a temperature sensor, a pressure sensor and the like, and the atmospheric data computer calculates corresponding altitude, airspeed and the like according to the acquired data. The accuracy of the data can effectively ensure the safety of the flying. The deviation of the data is often a deviation of the calculated data due to a deviation of the data acquired by the sensor.
If the temperature sensor and the pressure sensor are included in the method, after the data acquired by the temperature sensor and/or the pressure sensor deviate, deviation errors can occur in avionic data calculated by the atmospheric data sensor, so that potential safety hazards are caused. The error has multiple aspects, such as the problem that the atmospheric pressure data is influenced by temperature and has deviation, and different sensors have own characteristic parameters, so that stability and accuracy are reduced, the calculated altitude and airspeed data are directly caused to deviate, and the pilot judgment and the wrong operation are influenced by wrong altitude and airspeed information, so that the flying safety is influenced.
In the prior art, an error test is usually performed by adopting a manual test mode to judge whether the sensor detects an error, whether the sensor is replaced or adjusted to be used continuously is determined according to a test result, but the test mode depends on manual operation, so that instability of a product caused by irregular calibration flow of personnel can occur, and the consistency and the accuracy of an atmospheric data computer product are affected.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides an automatic test system for an atmosphere data computer, which is used for testing whether a sensor of the atmosphere data computer has acquisition errors or not.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the automatic test system for the atmospheric data computer comprises a temperature box, a control unit and a temperature acquisition display unit, wherein a control terminal of the temperature box is connected to the output end of the control unit, and the temperature box is controlled by the control unit and adjusts the temperature in the temperature box according to a control signal of the control unit; the atmosphere data computer is arranged in the temperature box; the output port of the atmosphere data computer is connected to the acquisition display unit, and the acquisition display unit is used for acquiring and displaying temperature data output by the atmosphere data computer.
The test system also comprises a display unit for pressure test and an atmosphere data unit, wherein the atmosphere data unit is used for generating a standard pressure signal and applying the standard pressure signal to a pressure sensor acquisition end of an atmosphere data computer; the output end of the control unit is connected to the control end of the atmosphere data unit; the input end of the display unit for pressure test is connected to the output end or the diagnosis interface of the atmosphere data computer.
The atmosphere data unit is an atmosphere data tester.
The Pt interface of the atmosphere data unit is connected to the PITOT interface of the atmosphere data computer; the Ps interface of the atmospheric data unit is connected to the STATIC interface of the atmospheric data computer.
The control unit is connected to a diagnosis interface or a communication interface of the air data computer through the RS232 communication module.
The test system further comprises a power supply, wherein the input end of the power supply is connected with the mains supply, and the output end of the power supply is connected to the temperature control box and used for supplying power to the temperature box.
The control unit is realized by an industrial computer.
The output end of the control unit is connected to a power supply and used for controlling the power supply to be turned on and off.
The utility model has the advantages that: the equipment is adopted for automatic test, the accuracy and the reliability of the atmospheric data computer can be accurately judged according to the test data, the test result is more accurate and reliable, the error of the test result is avoided, and basic test data is provided for replacing or maintaining the atmospheric data computer; the test result is objective, accurate and reliable.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic diagram of embodiment 1 of the present utility model;
fig. 2 is a schematic diagram of embodiment 2 of the present utility model.
Detailed Description
The following detailed description of the utility model refers to the accompanying drawings, which illustrate preferred embodiments of the utility model in further detail.
Example 1:
the utility model mainly aims to provide a standardized and automatic testing system which can enable workers to simply and rapidly test an atmosphere data computer, test whether the atmosphere data computer has errors or not and provide basic data for maintenance, replacement, calibration and the like. In the application, the atmospheric data computer with errors is mainly likely to be arranged on the sensor, so that the test system of the application tests the accuracy of the collected data of the sensor of the atmospheric data computer, and can simply and rapidly judge according to the test result to judge whether the sensor in the atmospheric data computer is abnormal or wrong.
The main function of the atmosphere data computer is to calculate avionic data based on collected temperature, pressure and other data, wherein the avionic data is integrated with a temperature sensor and a pressure sensor, and the pressure sensor is provided with two detection parts or detection terminal areas which are P, S respectively; it is therefore necessary to test the temperature, pressure, etc. separately.
As shown in fig. 1, in order to test whether a temperature sensor in an atmospheric data computer collects data correctly, a test system of the present application includes: the temperature box, the control unit and the temperature acquisition display unit;
the temperature box is a test box body capable of simulating a set temperature and keeping the set temperature, the inside of the temperature box body is hollow, equipment to be tested can be placed in the temperature box body, the environment temperature of the equipment to be tested is simulated, and the temperature box is used for simulating a stable temperature environment for testing. The temperature box is controlled by the control unit, and the temperature in the temperature box is adjusted according to the control signal of the control unit or the temperature in the corresponding temperature box is adjusted and set according to the input signal of the control unit. The temperature box is provided with a control terminal, and after an input control signal of external equipment is input through the control terminal, a controller in the temperature box adjusts the temperature in the temperature box based on the control signal and keeps the standard constant. The control terminal of the temperature box is in this application connected to the output of the control unit. The control unit is a controller with data processing and control functions, can be a singlechip, a PLC controller, an industrial computer PC and the like, and can be selected and realized according to actual needs.
In order to test an atmospheric data computer, the atmospheric data computer needs to be placed inside a temperature box; the output port of the atmospheric data computer is connected to the acquisition display unit, and the acquisition display unit is used for acquiring and displaying temperature data output by the atmospheric data computer. When testing, place the atmospheric data computer in the temperature box after, with each module power-on work, after the power-on, the control unit can set up or control the temperature data in the temperature box, wherein, set up can be realized through button, display screen etc. wherein, the display screen that some prior art temperature boxes have the setting temperature can directly realize setting through its touch screen or after connecting this application control unit and its control end, realize through the control signal that the output of control unit corresponds.
In this application, the control unit may be implemented by an industrial computer or PC, where the computer has peripheral devices such as a display screen and a keyboard and a mouse, and corresponding temperature parameters may be input through these peripheral devices. When the temperature of the temperature box reaches and is kept stable for a period of time, the temperature acquisition display unit can read and display the temperature acquired by the temperature sensor embedded in the temperature acquisition display unit in the atmospheric data computer, and because the temperature data set in the test are fixed and constant, the displayed temperature data and the set temperature data are compared to judge whether the temperature data calculated by the atmospheric data computer have deviation and the error, and the result of completing the test can provide basic data for the error judgment of the personnel and the subsequent calibration, replacement and maintenance.
As shown in fig. 1, when the temperature of the atmospheric data computer is tested, the computer is converted through the RS232 communication bus and the interface by the standard interface device and then is connected to the atmospheric data computer for communication, and the temperature acquisition display unit can be integrated in the computer because the computer is provided with the display, that is, the computer can realize the hardware functions of the control unit and the temperature acquisition display unit. The standard interface device can be set according to the actual temperature box and the interface of the atmosphere data computer, and the main function of the standard interface device is to convert the RS232 interface into a port function which can be connected with the atmosphere data computer in a communication way. The interface device is connected to a diagnosis port of the atmospheric data computer after conversion, and is used for realizing data interaction, including control signal sending and temperature signal acquisition.
The utility power supply is adopted in the power supply in the application, and the utility power supply is converted through the power supply module, and the temperature box is required to be supplied with power by a 28V power supply in the application, so that the power supply module in the application is an alternating-current-direct-current conversion and DCDC conversion module, converts alternating current into direct current and reduces the voltage to 28V, and then supplies power for the temperature box, wherein the power supply module is started and closed, a computer sends a power supply control signal to realize control, and the temperature box is provided with a temperature setting and adjusting function that the computer sends a temperature box control signal to control temperature. The output end of the 28V power supply is connected to a backboard interface of the atmosphere data computer through a power supply communication cable, the backboard interface is a power supply port of the atmosphere data computer, the atmosphere data computer is powered, and the atmosphere data computer and the temperature box are powered through the 28V power supply module.
Example 2:
according to the embodiment, on the basis of the embodiment, an atmospheric data unit is added to realize test verification of data sensors such as pressure in atmospheric data and the like, and the test verification is used for realizing verification of altitude and airspeed, and the test device comprises a display unit for pressure test and an atmospheric data unit, wherein the atmospheric data unit is used for generating a standard pressure signal and applying the standard pressure signal to a pressure sensor acquisition end of an atmospheric data computer; the output end of the control unit is connected to the control end of the air data unit; the input end of the display unit for pressure test is connected to the output end or the diagnosis interface of the atmosphere data computer.
In the present application, the atmospheric data unit is an atmospheric data tester; the Pt interface of the atmosphere data unit is connected to the PITOT interface of the atmosphere data computer; the Ps interface of the atmospheric data unit is connected to the STATIC interface of the atmospheric data computer.
In this application, the air data unit is an air data tester, such as ADTS405, and is mainly used to generate standard pressure physical signals to act on two interfaces of an air data computer: PITOT interface, STATIC interface (P, S interface). The display unit for pressure test mainly starts the display function of data, checks the data calculated and collected by the atmospheric data computer, and because the application adopts the computer to realize the control unit, the display unit for pressure test is also integrated in the computer to be realized, the computer PC is in communication connection with the atmospheric data tester through IEEE488 and is used for setting the pressure data value output by the atmospheric data tester (the atmospheric data unit), the physical pressure signal output by the atmospheric data tester acts on the PS end corresponding to the atmospheric data computer to realize the signal access to the atmospheric data computer, the computer PC is accessed to the diagnosis interface of the atmospheric data computer through RS232 and is used for reading and displaying the result of the atmospheric data computer, and a tester can confirm whether errors exist or not and the range of the errors and the like according to the set parameters and the displayed parameters.
The working principle of the device can be as follows: after the circuit is connected according to the principle in fig. 2, each module works after power-on, a control signal of an atmosphere data unit is set through the peripheral equipment of a computer PC, the control signal is sent to the atmosphere data unit through a pressure instruction corresponding to airspeed and altitude data, the atmosphere data unit outputs corresponding static pressure and dynamic pressure signal values according to the control signal respectively, the atmosphere data computer calculates corresponding altitude and airspeed data based on dynamic pressure and static pressure, and the calculation result can be sent to the computer PC for display through RS232, so that the aim of testing can be achieved through comparison of the set parameters and the displayed parameters.
The test system has accuracy and stability, can restrict errors in a standard range, adopts automatic standard test, reduces manual intervention, ensures that equipment has high consistency, and greatly improves production efficiency.
Firstly, as shown in fig. 1, the equipment is placed in a temperature box, a backboard interface and a diagnosis interface of an atmospheric data computer are communication interfaces of the equipment, RS232 communication of the equipment is completed, a calibration interface device can be connected with a plurality of pieces of equipment, so that the plurality of pieces of equipment can establish RS232 communication with the computer, 4 pieces of equipment can be calibrated at the same time, and the temperature box is in control connection with the computer, and is connected with an equipment power supply. After the power-on is started, the temperature test and the aging test can be performed through temperature control of a temperature box. Temperature error judgment is realized through temperature comparison; next, as shown in fig. 2, the apparatus is placed in a temperature box, and the static output and the pitot tube output of the air data unit are connected by a hose, the computer communicates with the air data unit by IEEE488, and the control of the air data unit is completed, and the temperature box is connected with the computer in a control manner. After equipment connection is completed, the communication test normally enters a test flow, the temperature is recalibrated firstly, the consistency of the temperature during atmospheric calibration is guaranteed, then the atmospheric data unit is controlled to output high-speed data of-3000 ft to 35000ft, high-speed data calibration is completed at fixed intervals, airspeed pressure data of 0-300 kts are output, calibration of airspeed pressure data is completed at incremental intervals, atmospheric calibration is completed, data related to the altitude and airspeed are written into the equipment, and the equipment completes accurate judgment of the atmospheric pressure of the environment based on the calibration information. And after the atmospheric calibration is finished, the calibration software controls the atmospheric data units to sequentially increase the output altitude and the airspeed pressure in a verification stage, and the verification device can correctly identify whether the atmospheric data units are within a specified reasonable error range.
It is obvious that the specific implementation of the present utility model is not limited by the above-mentioned modes, and that it is within the scope of protection of the present utility model only to adopt various insubstantial modifications made by the method conception and technical scheme of the present utility model.
Claims (8)
1. An automated testing system for an atmospheric data computer, characterized by: the temperature control device comprises a temperature box, a control unit and a temperature acquisition display unit, wherein a control terminal of the temperature box is connected to the output end of the control unit, and the temperature box is controlled by the control unit and adjusts the temperature in the temperature box according to a control signal of the control unit; the atmosphere data computer is arranged in the temperature box; the output port of the atmosphere data computer is connected to the acquisition display unit, and the acquisition display unit is used for acquiring and displaying temperature data output by the atmosphere data computer.
2. An automated test system for an atmospheric data computer according to claim 1, wherein: the test system also comprises a display unit for pressure test and an atmosphere data unit, wherein the atmosphere data unit is used for generating a standard pressure signal and applying the standard pressure signal to a pressure sensor acquisition end of an atmosphere data computer; the output end of the control unit is connected to the control end of the atmosphere data unit; the input end of the display unit for pressure test is connected to the output end or the diagnosis interface of the atmosphere data computer.
3. An automated test system for an atmospheric data computer according to claim 2, wherein: the atmosphere data unit is an atmosphere data tester.
4. An automated test system for an atmospheric data computer according to claim 2, wherein: the Pt interface of the atmosphere data unit is connected to the PITOT interface of the atmosphere data computer; the Ps interface of the atmospheric data unit is connected to the STATIC interface of the atmospheric data computer.
5. An automated test system for an atmospheric data computer according to any one of claims 1 to 4, wherein: the control unit is connected to a diagnosis interface or a communication interface of the air data computer through the RS232 communication module.
6. An automated test system for an atmospheric data computer according to any one of claims 1 to 4, wherein: the test system further comprises a power supply, wherein the input end of the power supply is connected with the mains supply, and the output end of the power supply is connected to the temperature control box and used for supplying power to the temperature box.
7. An automated test system for an atmospheric data computer according to any one of claims 1 to 4, wherein: the control unit is realized by an industrial computer.
8. An automated test system for an atmospheric data computer according to claim 6, wherein: the output end of the control unit is connected to a power supply and used for controlling the power supply to be turned on and off.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321409363.1U CN220208149U (en) | 2023-06-05 | 2023-06-05 | Automatic test system for atmospheric data computer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321409363.1U CN220208149U (en) | 2023-06-05 | 2023-06-05 | Automatic test system for atmospheric data computer |
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| CN220208149U true CN220208149U (en) | 2023-12-19 |
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| CN202321409363.1U Active CN220208149U (en) | 2023-06-05 | 2023-06-05 | Automatic test system for atmospheric data computer |
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- 2023-06-05 CN CN202321409363.1U patent/CN220208149U/en active Active
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