Landing lamp test bed

Abstract

The utility model provides a landing lamp test bed. The landing lamp test bed comprises a landing lamp assembly, an industrial all-in-one machine, a micro-processing unit, a magnetic powder brake and a timing circuit, the industrial all-in-one machine is configured to control the landing lamp assembly to execute preset operation; the micro-processing unit is configured to receive gear data issued by the industrial all-in-one machine; the magnetic powder brake is configured to apply a loading force corresponding to the gear data to the landing lamp assembly under the control of the micro-processing unit; the timing circuit is configured to indicate the starting time and the ending time of the landing lamp assembly in the process of executing the preset operation under the condition that the loading force is applied through the IO signal. According to the invention, man-machine interaction is realized by using the industrial all-in-one machine to trigger the application of the loading force and the control of the landing lamp assembly, the loading force based on the magnetic powder brake is realized by communicating with the micro-processing unit, and the starting time and the ending time of the landing lamp for executing the preset operation are accurately identified by using the timing circuit. And the automation and the accuracy of the landing lamp test are effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of equipment circuit control, and in particular to a landing light test bench. Background Art

[0002] Landing lights are lights used to illuminate the runway when the aircraft takes off and lands. They are usually installed at the front of the aircraft or the leading edge of the wing. When not in use, they are retracted so that the surface of the lamp is flush with the fuselage. When in use, they are released to illuminate the runway. Landing lights need to be tested for mechanical and electrical properties during design and production, especially for testing the deployment and retraction operations of landing lights under simulated wind resistance. The existing landing light test bench is composed of electrical components, with a relatively low degree of automation and inspection accuracy. In particular, human factors are required in the process of load application and retraction timing, which affects the test results. Utility Model Content

[0003] The purpose of the embodiments of the present disclosure is to provide a landing light test bench to solve the problems in the prior art that the degree of automation and detection accuracy of the landing light test bench are low and the test results are affected by human factors.

[0004] The embodiments of the present disclosure adopt the following technical solutions: a landing light test bench, comprising at least: a landing light assembly, an industrial integrated machine, a microprocessor unit, a magnetic powder brake, and a timing circuit; wherein the industrial integrated machine is configured to control the landing light assembly to perform a preset operation; the microprocessor unit is connected to the industrial integrated machine and is configured to receive the gear data issued by the industrial integrated machine; the magnetic powder brake is connected to the microprocessor unit and is configured to apply a loading force corresponding to the gear data to the landing light assembly under the control of the microprocessor unit; the timing circuit is connected to the microprocessor unit and is configured to indicate the start time and end time of the landing light assembly performing the preset operation when the loading force is applied through an IO signal, and upload the start timing signal and the end timing signal to the microprocessor unit.

[0005] In some embodiments, the preset operations include at least a landing light lighting operation, a landing light releasing operation, and a landing light retracting operation; the landing light assembly includes at least a landing light driving circuit, and the landing light driving circuit includes at least a landing light lighting circuit, a landing light releasing circuit, and a landing light retracting circuit, wherein the landing light lighting circuit is configured to perform the landing light lighting operation under the control of the industrial all-in-one machine, the landing light releasing circuit is configured to perform the landing light releasing operation under the control of the industrial all-in-one machine, and the landing light retracting circuit is configured to perform the landing light retracting operation under the control of the industrial all-in-one machine.

[0006] In some embodiments, the timing circuit includes: a time start timing circuit and a time end timing circuit; wherein, the time start timing circuit is configured to collect the voltage value of the landing light driving circuit, and when the voltage is greater than or equal to a voltage threshold, output a start timing signal to the microprocessing unit; the time end timing circuit is configured to collect the current value of the landing light driving circuit, and when the current value is less than or equal to a current threshold, output an end timing signal to the microprocessing unit.

[0007] In some embodiments, the time start timing circuit at least includes: an optocoupler, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor, wherein the first end of the first resistor is connected to the landing light driving circuit, the second end of the first resistor is connected in series with the second resistor and then connected to the first pin of the primary end of the optocoupler, the first pole of the first capacitor is grounded, the second pole of the first capacitor is connected to the first pin, the second pin of the primary end of the optocoupler and the third pin of the secondary end of the optocoupler are grounded, the first end of the third resistor is connected to the working voltage, the second end of the third resistor is connected to the fourth pin of the secondary end of the optocoupler, the first end of the fourth resistor is connected to the fourth pin, the second end of the fourth resistor is connected to the microprocessor unit, the first pole of the second capacitor is connected to the second end of the fourth resistor, and the second pole of the second capacitor is grounded.

[0008] In some embodiments, the time-end timing circuit at least includes: a current transformer, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor and an operational amplifier; wherein the current transformer is configured to sense the current of the landing light driving circuit, the first end of the current transformer is connected to the first end of the fifth resistor, the second end of the current transformer is grounded, the second end of the fifth resistor is connected to the in-phase input end of the operational amplifier, the first end of the sixth resistor is connected to the working voltage, the second end of the sixth resistor is connected to the inverting input end of the operational amplifier, the first end of the seventh resistor is connected to the second end of the sixth resistor, the second end of the seventh resistor is grounded, the output end of the operational amplifier is connected to the first end of the eighth resistor, the second end of the eighth resistor is connected to the micro-processing unit, the first pole of the third capacitor is grounded, and the second pole of the third capacitor is connected to the second end of the eighth resistor.

[0009] In some embodiments, the time start timing circuit includes: a lighting time start timing circuit, a release time start timing circuit and a retracting time start timing circuit; the time end timing circuit includes: a lighting time end timing circuit, a release time end timing circuit and a retracting time end timing circuit.

[0010] In some embodiments, it also includes: a torque sensor, which is connected to the microprocessor unit and configured to detect the torque value of the landing light assembly and upload the torque value to the microprocessor unit; the microprocessor unit is also configured to determine the actual loading force applied to the landing light assembly according to the torque value, and control the magnetic powder brake according to the difference between the loading force corresponding to the gear data and the actual loading force.

[0011] In some embodiments, it also includes: an angle sensor, which is connected to the microprocessing unit and is configured to detect the angle of the landing light assembly when performing the preset operation and upload the angle to the microprocessing unit.

[0012] In some embodiments, it also includes: a voltage and current detection circuit, which is connected to the microprocessing unit and is configured to detect the operating voltage and operating current of the landing light assembly when performing the preset operation.

[0013] In some embodiments, the industrial all-in-one machine has a display screen, and the display screen has a touch function.

[0014] The beneficial effects of the disclosed embodiments are as follows: an industrial all-in-one machine is used to implement human-computer interaction to trigger the application of loading force and the control of the landing light assembly, and the loading force based on the magnetic powder brake is implemented by communicating with the microprocessor unit. At the same time, a timing circuit is used to respectively realize the accurate identification of the start time and end time of the landing light to perform a preset operation, thereby effectively improving the automation and accuracy of the landing light test, while eliminating human interference, making the test results more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of a landing light test bench according to an embodiment of the present disclosure;

[0017] Figure 2 Schematic diagram of the circuit structure of the time start timing circuit of the embodiment of the present disclosure;

[0018] Figure 3 Schematic diagram of the circuit structure of the time-out timing circuit of the embodiment of the present disclosure;

[0019] Figure 4 Schematic diagram of the circuit structure of the voltage and current detection circuit of the embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the following will be combined with the drawings in one or more embodiments of this specification to clearly and completely describe the technical solutions in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this document.

[0021] Landing lights are lights used to illuminate the runway when the aircraft takes off and lands. They are usually installed at the front of the aircraft or the leading edge of the wing. When not in use, they are retracted so that the surface of the lamp is flush with the fuselage. When in use, they are released to illuminate the runway. Landing lights need to be tested for mechanical and electrical properties during design and production, especially for testing the deployment and retraction operations of landing lights under simulated wind resistance. The existing landing light test bench is composed of electrical components, with a relatively low degree of automation and inspection accuracy. In particular, human factors are required in the process of load application and retraction timing, which affects the test results.

[0022] In order to solve the above problems, the present disclosure provides a landing light test bench, the structural diagram of which is shown in FIG. Figure 1As shown, the test bench is equipped with a landing light assembly 10, and the test bench is equipped with an industrial integrated machine 20, a microprocessor unit 30, a magnetic powder brake 40 and a timing circuit 50 to control the test process of the landing light assembly and collect test results. Specifically, the landing light assembly at least includes a landing light body, a driving device (including a shaft body) for retracting and extending the landing light, and a landing light driving circuit for driving the landing light to perform various preset operations; the industrial integrated machine is configured to realize the human-computer interaction function, and control the landing light assembly to perform preset operations based on the function selected by the user; the microprocessor unit is connected to the industrial integrated machine, which can be built into the industrial integrated machine as a component or communicate with the industrial integrated machine as an independent device. It is specifically configured to receive the gear data sent by the industrial integrated machine. The gear data is the load condition applied to the landing light in this test selected by the user on the integrated machine; the magnetic powder brake The device is connected to the microprocessor unit, and under the control of the microprocessor unit, a loading force corresponding to the gear data is applied to the landing light assembly, that is, a torque opposite to the driving rotation direction is applied to the landing light when the landing light is released or retracted, thereby forming a load; the timing circuit is connected to the microprocessor unit for communication, and is configured to indicate the start time and end time of the landing light assembly during the preset operation when the loading force is applied through an IO signal, and upload a start timing signal indicating the start of the preset operation and an end timing signal indicating the end of the preset operation to the microprocessor unit. After receiving the signal, the microprocessor unit can count the execution process of the preset operation and transmit it to the industrial all-in-one machine for display.

[0023] In this embodiment, the lighting, stowing and releasing conditions of the landing light are mainly tested and detected, that is, the industrial integrated machine controls the landing light to perform any one of the landing light lighting operation, landing light releasing operation and landing light stowing operation as a preset operation according to the test target selected by the user. Accordingly, the landing light driving circuit in the landing light assembly corresponds to the above operation and includes at least a landing light lighting circuit, a landing light releasing circuit and a landing light stowing circuit. When the user operates the industrial integrated machine and issues a landing light lighting, landing light releasing or landing light stowing instruction, the industrial integrated machine supplies power to the corresponding operation circuit to control the operation circuit to enter the working state to perform the corresponding operation. Specifically, the landing light lighting circuit is configured to perform the landing light lighting operation under the control of the industrial integrated machine, the landing light releasing circuit is configured to perform the landing light stowing operation under the control of the industrial integrated machine, and the landing light stowing circuit is configured to perform the landing light stowing operation under the control of the industrial integrated machine.

[0024] The timing circuit includes a time start timing circuit and a time end timing circuit, which are respectively used to generate and send timing signals for starting and ending the preset operation. In actual implementation, when the user receives the user's control, the industrial all-in-one machine supplies power to the corresponding operation circuit to drive it to start working. Therefore, in this embodiment, the time start timing circuit collects the voltage of the operation circuit as the timing basis, that is, the time start circuit collects the voltage value of the landing light driving circuit, and outputs a start timing signal to the microprocessor unit when the voltage value is greater than or equal to the voltage threshold. As for the landing light driving circuit, it can enter the working state according to the power supply situation of the industrial integrated machine, but the condition for judging when it should stop is not determined based on the industrial integrated machine. Usually, the driving circuit is automatically triggered to disconnect after the landing light component reaches a certain condition. For example, when performing a folding or releasing operation, when the folding or releasing reaches its corresponding folding position or releasing position, the driving circuit can be triggered to stop further releasing or folding operations through physical components such as a travel switch. However, for the industrial integrated machine, it is impossible to know when to stop supplying power to the driving circuit, so it is impossible to judge whether the driving circuit has stopped by collecting the voltage situation of the driving circuit. Therefore, this embodiment adopts mutual inductance collection of the current situation in the circuit. After collecting the current value of the circuit, when the current value is less than or equal to the current threshold, a timing end signal is output to the microprocessing unit.

[0025] It should be noted that the time start timing circuit is usually set at the upper port of the landing light driving circuit, so as to collect the voltage value in time and send out the start timing signal when the power supply starts; while the time end timing circuit is usually set at the lower port of the landing light driving circuit to avoid the influence of the uninterrupted power supply operation on the current value collection. In addition, corresponding to different landing light driving circuits, independent time start timing circuits and time end timing circuits are designed respectively, that is, the time start timing circuit includes: the lighting time start timing circuit, the release time start timing circuit and the retracting time start timing circuit; the time end timing circuit includes: the lighting time end timing circuit, the release time end timing circuit and the retracting time end timing circuit.

[0026] Figure 2 The circuit structure diagram of the time start timing circuit in this embodiment is shown, and the circuit at least includes an optical coupler U10, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1 and a second capacitor C2. Figure 2 As shown, the first end of the first resistor is connected to the landing light driving circuit (corresponding to Figure 2The first terminal of the first resistor is connected to the first pin of the primary terminal of the optical coupler after being connected in series with the second resistor. The first electrode of the first capacitor is grounded. The second electrode of the first capacitor is connected to the first pin. The second pin of the primary terminal of the optical coupler and the third pin of the secondary terminal of the optical coupler are grounded. The first end of the third resistor is connected to the working voltage. The second end of the third resistor is connected to the fourth pin of the secondary terminal of the optical coupler. The first end of the fourth resistor is connected to the fourth pin. The second end of the fourth resistor is connected to the microprocessor unit (corresponding to Figure 2 TM_OPEN_ZL), the first electrode of the second capacitor is connected to the second end of the fourth resistor, and the second electrode of the second capacitor is grounded. Figure 2 The specific parameters or models of each electronic component shown in Figure 2 The time start timing circuit shown sends a start timing signal to the microprocessing unit when it determines that the collected voltage value is greater than or equal to 10V.

[0027] Figure 3 The circuit structure diagram of the time-out timing circuit in this embodiment is shown, and the circuit at least includes a current transformer S10, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third capacitor C3 and an operational amplifier U20. Figure 3 As shown, the current transformer is configured to sense the current I of the landing light driving circuit, the first end of the current transformer is connected to the first end of the fifth resistor, the second end of the current transformer is grounded, the second end of the fifth resistor is connected to the non-inverting input end of the operational amplifier, the first end of the sixth resistor is connected to the working voltage, the second end of the sixth resistor is connected to the inverting input end of the operational amplifier, the first end of the seventh resistor is connected to the second end of the sixth resistor, the second end of the seventh resistor is grounded, the output end of the operational amplifier is connected to the first end of the eighth resistor, and the second end of the eighth resistor is connected to the microprocessing unit (corresponding to Figure 2 The first electrode of the third capacitor is grounded, and the second electrode of the third capacitor is connected to the second end of the eighth resistor. Figure 3 The specific parameters or models of each electronic component shown in Figure 3 The time end timing circuit shown sends a timing end signal to the microprocessing unit when determining that the collected current value is less than or equal to 0.1A.

[0028] In actual implementation, the test bench also includes a torque sensor 60, which is connected to the microprocessor unit and is configured to detect the torque value of the landing light assembly and upload the torque value to the microprocessor unit; the microprocessor unit is also configured to determine the actual loading force applied to the landing light assembly according to the torque value sent back by the torque sensor, which is usually the torque value / 0.124 (m). After the microprocessor unit obtains the actual loading force, it compares the loading force corresponding to the gear data it receives with the actual loading force, and based on the difference between the two, further controls the magnetic powder brake to achieve precise control of the loading force.

[0029] In some embodiments, the test bench further includes an angle sensor 70, which is connected to the microprocessor unit and is configured to detect the angle of the landing light assembly when performing a preset operation, especially when performing a stowing and releasing operation, and upload the angle to the microprocessor unit. In addition, a voltage and current detection circuit is also configured, and its circuit structure diagram is shown in FIG. Figure 4 As shown, it is also connected to the microprocessor unit to detect the operating voltage and current of the landing light assembly when performing preset operations. After acquiring the data uploaded by each sensor or circuit, the microprocessor unit can integrate and transmit it to the industrial all-in-one machine, and display it on the display screen of the industrial all-in-one machine. The display screen also includes a touch function, which is more convenient for users to operate. In actual implementation, a single-chip microcomputer model STM32F103VD can be selected as the microprocessor unit.

[0030] This embodiment uses an industrial all-in-one machine to achieve human-computer interaction to trigger the application of loading force and the control of the landing light assembly, and realizes the loading force based on the magnetic powder brake by communicating with the microprocessor unit. At the same time, a timing circuit is used to accurately identify the start time and end time of the landing light to perform a preset operation, which effectively improves the automation and accuracy of the landing light test, eliminates human interference, and makes the test results more stable and reliable.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A landing light test bench, characterized in that: At least: Landing light assembly, industrial all-in-one machine, microprocessor unit, magnetic powder brake, timing circuit; among them, The industrial integrated machine is configured to control the landing light assembly to perform a preset operation; The microprocessing unit is connected to the industrial integrated machine and is configured to receive the gear data sent by the industrial integrated machine; The magnetic powder brake is connected to the microprocessing unit and is configured to apply a loading force corresponding to the gear position data to the landing light assembly under the control of the microprocessing unit; The timing circuit is connected to the microprocessor unit and is configured to indicate the start time and end time of the landing light assembly performing the preset operation process when the loading force is applied through an IO signal, and upload the start timing signal and the end timing signal to the microprocessor unit.

2. The landing light test bench according to claim 1, characterized in that: The preset operations at least include a landing light lighting operation, a landing light releasing operation, and a landing light retracting operation; The landing light assembly includes at least a landing light driving circuit, and the landing light driving circuit includes at least a landing light lighting circuit, a landing light releasing circuit and a landing light retracting circuit, wherein the landing light lighting circuit is configured to perform the landing light lighting operation under the control of the industrial all-in-one machine, the landing light releasing circuit is configured to perform the landing light releasing operation under the control of the industrial all-in-one machine, and the landing light retracting circuit is configured to perform the landing light retracting operation under the control of the industrial all-in-one machine.

3. The landing light test bench according to claim 2, characterized in that: The timing circuit includes: a time start timing circuit and a time end timing circuit; wherein, The time start timing circuit is configured to collect the voltage value of the landing light driving circuit and output a start timing signal to the microprocessing unit when the voltage is greater than or equal to a voltage threshold; The time-end timing circuit is configured to collect the current value of the landing light driving circuit, and output an end timing signal to the microprocessing unit when the current value is less than or equal to a current threshold.

4. The landing light test bench according to claim 3, characterized in that: The time start timing circuit at least includes: an optical coupler, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor, wherein: The first end of the first resistor is connected to the landing light driving circuit, the second end of the first resistor is connected in series with the second resistor and then connected to the first pin of the primary end of the optocoupler, the first electrode of the first capacitor is grounded, the second electrode of the first capacitor is connected to the first pin, the second pin of the primary end of the optocoupler and the third pin of the secondary end of the optocoupler are grounded, the first end of the third resistor is connected to the working voltage, the second end of the third resistor is connected to the fourth pin of the secondary end of the optocoupler, the first end of the fourth resistor is connected to the fourth pin, the second end of the fourth resistor is connected to the microprocessor unit, the first electrode of the second capacitor is connected to the second end of the fourth resistor, and the second electrode of the second capacitor is grounded.

5. The landing light test bench according to claim 3, characterized in that: The time-out timing circuit at least comprises: A current transformer, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor and an operational amplifier; wherein, The current transformer is configured to sense the current of the landing light driving circuit, the first end of the current transformer is connected to the first end of the fifth resistor, the second end of the current transformer is grounded, the second end of the fifth resistor is connected to the non-inverting input end of the operational amplifier, the first end of the sixth resistor is connected to the working voltage, the second end of the sixth resistor is connected to the inverting input end of the operational amplifier, the first end of the seventh resistor is connected to the second end of the sixth resistor, the second end of the seventh resistor is grounded, the output end of the operational amplifier is connected to the first end of the eighth resistor, the second end of the eighth resistor is connected to the micro-processing unit, the first electrode of the third capacitor is grounded, and the second electrode of the third capacitor is connected to the second end of the eighth resistor.

6. The landing light test bench according to claim 3, characterized in that: The time start timing circuit includes: a lighting time start timing circuit, a release time start timing circuit and a retract time start timing circuit; The time end timing circuit includes: a lighting time end timing circuit, a release time end timing circuit and a retracted time end timing circuit.

7. The landing light test bench according to claim 1, characterized in that: Also includes: a torque sensor, the torque sensor being connected to the microprocessing unit and configured to detect a torque value of the landing light assembly and upload the torque value to the microprocessing unit; The microprocessing unit is also configured to determine an actual loading force applied to the landing light assembly according to the torque value, and control the magnetic powder brake according to a difference between the loading force corresponding to the gear data and the actual loading force.

8. The landing light test bench according to claim 1, characterized in that: Also includes: An angle sensor is connected to the microprocessor unit and is configured to detect the angle of the landing light assembly when performing the preset operation and upload the angle to the microprocessor unit.

9. The landing light test bench according to claim 1, characterized in that: Also includes: A voltage and current detection circuit is connected to the microprocessing unit and is configured to detect the operating voltage and the operating current of the landing light assembly when performing the preset operation.

10. The landing light test bench according to any one of claims 1 to 9, characterized in that: The industrial all-in-one machine has a display screen, and the display screen has a touch function.

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