A testing device for an automatic throttle potentiometer assembly

Abstract

The application discloses a kind of test device of automatic throttle electric door component, it is related to aviation equipment maintenance technical field, each automatic throttle electric door component includes plug and several microswitches, the test device of automatic throttle electric door component includes sequentially connected component socket module, dial switch group module, resistance measurement module and dynamic display module;Component socket module includes the same number of socket with the plug, for connecting the plug, obtain the output of the microswitch;Dial switch group module includes the double quantity of dial switch of microswitch, and each dial switch is used to form the measuring path between the two pins of a microswitch;Resistance measurement module is used to measure the resistance value of the measuring path;Dynamic display module is used to display resistance value.The microswitch of the present application embodiment can be conveniently selected for testing, and the test results are automatically displayed, to realize rapid troubleshooting, effectively improve the efficiency of line maintenance work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aviation equipment maintenance, and in particular to a testing device for an automatic throttle switch pack. BACKGROUND

[0002] The automatic throttle switch pack of a Boeing 737NG aircraft triggers micro switches in a preset range through a mechanical linkage according to the change in the angle of the throttle lever, turns on the corresponding control circuit, provides a logic signal, and starts the corresponding aircraft system function.

[0003] Currently, airlines maintenance units use a general-purpose meter to measure the on-off electrical parameters of the switches and detect the logic relationship, but this method has a large amount of manual operation and high human error, and in a narrow working space, the testing, adjustment and troubleshooting of the switch pack are inefficient and difficult. SUMMARY

[0004] The present application aims to simplify the testing process of the automatic throttle switch pack, and provides a testing device for the automatic throttle switch pack, which can conveniently select the micro switches for testing and automatically display the test results, so as to quickly troubleshoot and effectively improve the efficiency of line maintenance.

[0005] To solve the above technical problems, the present application provides a testing device for an automatic throttle switch pack, each automatic throttle switch pack comprising a plug and a plurality of micro switches; the testing device for the automatic throttle switch pack comprising a component socket module, a dial switch group module, a resistance measurement module and a dynamic display module connected in sequence.

[0006] The component socket module comprises a plurality of sockets equal in number to the plug, for connecting the plug to obtain the output of the micro switch; the dial switch group module comprises a plurality of dial switches equal in number to twice the number of micro switches, each dial switch forming a measurement path between two pins of a micro switch; the resistance measurement module is used to measure the resistance value of the measurement path; and the dynamic display module is used to display the resistance value.

[0007] As an improvement of the above-mentioned scheme, each automatic throttle switch pack comprises micro switches S1-S9, each micro switch comprising a first pin, a second pin and a third pin; the dial switch group module comprises dial switches SW1-SW18 and a common pin logic selection unit.

[0008] The first end of the toggle switch SW1 is connected with the first pin of the micro switch S1; the first end of the toggle switch SW2 is connected with the third pin of the micro switch S1; the first end of the toggle switch SW3 is connected with the first pin of the micro switch S3; the first end of the toggle switch SW4 is connected with the third pin of the micro switch S2; the first end of the toggle switch SW5 is connected with the first pin of the micro switch S3; the first end of the toggle switch SW6 is connected with the third pin of the micro switch S3; the first end of the toggle switch SW7 is connected with the first pin of the micro switch S4; the first end of the toggle switch SW8 is connected with the third pin of the micro switch S4; the first end of the toggle switch SW9 is connected with the first pin of the micro switch S5; the first end of the toggle switch SW10 is connected with the third pin of the micro switch S5; the first end of the toggle switch SW11 is connected with the first pin of the micro switch S6; the first end of the toggle switch SW12 is connected with the third pin of the micro switch S6; the first end of the toggle switch SW13 is connected with the first pin of the micro switch S7; the first end of the toggle switch SW14 is connected with the third pin of the micro switch S7; the first end of the toggle switch SW15 is connected with the first pin of the micro switch S8; the first end of the toggle switch SW16 is connected with the third pin of the micro switch S8; the first end of the toggle switch SW17 is connected with the first pin of the micro switch S9; the first end of the toggle switch SW18 is connected with the third pin of the micro switch S9.

[0009] The second end of the toggle switch SW1-SW18 is connected with the first input end of the common pin logic selection unit and the resistance measurement module; the third end of the toggle switch SW1-SW18 is grounded.

[0010] The second pin of the micro switch S1-S9 is connected with the second input end of the common pin logic selection unit; the output end of the common pin logic selection unit is connected with the resistance measurement module.

[0011] As an improvement of the above scheme, the common pin logic selection unit comprises exclusive OR gates U1-U9, AND gates U10-U18 and OR gate U19.

[0012] The first input end and the second input end of the XOR gate U1 are connected to the second end of the toggle switch SW1 and the second end of the toggle switch SW2 respectively; the first input end and the second input end of the AND gate U10 are connected to the output end of the XOR gate U1 and the second pin of the micro switch S1 respectively; the first input end and the second input end of the XOR gate U2 are connected to the second end of the toggle switch SW3 and the second end of the toggle switch SW4 respectively; the first input end and the second input end of the AND gate U11 are connected to the output end of the XOR gate U2 and the second pin of the micro switch S2 respectively; the first input end and the second input end of the XOR gate U3 are connected to the second end of the toggle switch SW5 and the second end of the toggle switch SW6 respectively; the first input end and the second input end of the AND gate U12 are connected to the output end of the XOR gate U3 and the second pin of the micro switch S3 respectively; the first input end and the second input end of the XOR gate U4 are connected to the second end of the toggle switch SW7 and the second end of the toggle switch SW8 respectively; the first input end and the second input end of the AND gate U13 are connected to the output end of the XOR gate U4 and the second pin of the micro switch S4 respectively; the first input end and the second input end of the XOR gate U5 are connected to the second end of the toggle switch SW9 and the second end of the toggle switch SW10 respectively; the first input end and the second input end of the AND gate U14 are connected to the output end of the XOR gate U5 and the second pin of the micro switch S5 respectively; the first input end and the second input end of the XOR gate U6 are connected to the second end of the toggle switch SW11 and the second end of the toggle switch SW12 respectively; the first input end and the second input end of the AND gate U15 are connected to the output end of the XOR gate U6 and the second pin of the micro switch S6 respectively; the first input end and the second input end of the XOR gate U7 are connected to the second end of the toggle switch SW13 and the second end of the toggle switch SW14 respectively; the first input end and the second input end of the AND gate U16 are connected to the output end of the XOR gate U7 and the second pin of the micro switch S7 respectively; the first input end and the second input end of the XOR gate U8 are connected to the second end of the toggle switch SW15 and the second end of the toggle switch SW16 respectively; the first input end and the second input end of the AND gate U17 are connected to the output end of the XOR gate U8 and the second pin of the micro switch S8 respectively; the first input end and the second input end of the XOR gate U9 are connected to the second end of the toggle switch SW17 and the second end of the toggle switch SW18 respectively; the first input end and the second input end of the AND gate U18 are connected to the output end of the XOR gate U9 and the second pin of the micro switch S9 respectively; the output ends of the AND gates U10-U18 are connected to the input end of the OR gate U19, and the output end of the OR gate U19 is connected to the input end of the resistance measurement module.

[0013] As an improvement of the above scheme, the resistance measurement module comprises a resistance conversion unit; the resistance conversion unit is used to convert the electrical parameter between the first input end and the second input end of the resistance measurement module into resistance and transmit to the output end.

[0014] The first input end of the resistance conversion unit is electrically connected with the second end of the toggle switch SW1-SW18; the second input end of the resistance conversion unit is electrically connected with the output end of the OR gate U19; and the output end of the resistance conversion unit is electrically connected with the input end of the dynamic display module.

[0015] As an improvement of the above scheme, the dynamic display module comprises a display screen.

[0016] The first input end of the display screen is connected with the output end of the resistance conversion unit, the second input end of the display screen is connected with the control display unit of the aircraft system, and the control display unit is used for displaying the throttle lever resolving angle of the automatic throttle potentiometer assembly.

[0017] Compared with the prior art, the test device for the automatic throttle potentiometer assembly comprises a component socket module, a toggle switch group module, a resistance measurement module and a dynamic display module connected in sequence, wherein the component socket module comprises a plurality of sockets same in number as the plugs, is used for connecting the plugs and obtaining the output of the micro-potentiometer, the toggle switch group module comprises a double number of toggle switches of the micro-potentiometer, each toggle switch is used for forming a measurement path between two pins of a micro-potentiometer, the resistance measurement module is used for measuring the resistance value of the measurement path, and the dynamic display module is used for displaying the resistance value. By adopting the embodiment of the present application, the micro-potentiometer to be tested can be conveniently selected, and the test result can be automatically displayed, so that the rapid fault elimination is realized, and the efficiency of the line maintenance work is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the test device for the automatic throttle potentiometer assembly provided by the embodiment of the present application;

[0019] Figure 2 is an assembly schematic diagram of the test device for the automatic throttle potentiometer assembly provided by the embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0021] In the description and claims, it should be understood that the terms first, second, etc. are used only for the purpose of distinguishing similar technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. The terms are interchangeable under appropriate circumstances. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features.

[0022] The Autothrottle Switch Pack triggers micro-switches in a preset range through a mechanical linkage according to the change of the throttle lever angle, turns on the corresponding control circuit, provides a logic signal, and starts the corresponding aircraft system function. Due to the design characteristics of the mechanical structure driving the on-off of the switch, the reliability is unstable, the instantaneous failure rate is high, the fault concealment is strong, the maintenance amount is large; the self-checking device outputs a maintenance code which is not strong in pertinence, and the fault analysis and fault positioning accuracy is not high, and the repeatability is strong. At present, the maintenance units of airlines generally do not maintain through the self-checking device, but use a general meter to realize the measurement of the on-off of the switch and the detection of the logic relationship. However, the prior art needs to reposition the pin and manually record the real-time resistance value when detecting each micro-switch, and the maintenance personnel need to have high professionalism, the fault tolerance is low, and the labor cost is high.

[0023] Based on the above thinking, the embodiment of the present application provides a test device for an autothrottle switch pack. It should be noted that each autothrottle switch pack includes a plug and a plurality of micro-switches.

[0024] In the embodiment of the present application, the autothrottle switch pack of the Boeing 737NG aircraft is taken as an example. Each 737NG aircraft is equipped with two autothrottle switch packs, namely a left autothrottle switch pack and a right autothrottle switch pack, each corresponding to a thrust lever assembly. Each thrust lever assembly drives its corresponding pack through a mechanical linkage. Each pack has nine switches that input discrete signals of the thrust lever position to multiple systems.

[0025] Please refer to Figure 1 In this embodiment, the test device 10 for the autothrottle switch pack includes a component socket module 11, a dial switch group module 12, a resistance measurement module 13 and a dynamic display module 14 connected in sequence.

[0026] The component socket module 11 includes the same number of sockets as the plugs for connecting the plugs to obtain the output of the micro switch; the dial switch group module 12 includes double the number of dial switches of the micro switch, and each dial switch is used to form a measuring path between two pins of a micro switch; the resistance measuring module 13 is used to measure the resistance value of the measuring path; and the dynamic display module 14 is used to display the resistance value.

[0027] It should be noted that in the Boeing 737NG aircraft, the left automatic throttle switch assembly package includes two plugs, namely D11128P and D11130P; and the right automatic throttle switch assembly package also includes two plugs, namely D11132P and D11134P. Different models correspond to different sockets, so the number of sockets in the embodiment of the application is 4, which correspond to the plugs D11128P, D11130P, D11132P and D11134P respectively.

[0028] It should also be noted that different combinations of pins correspond to different micro switches, and in the embodiment of the application, the continuity and operating state of the micro switch are reflected by measuring the resistance value between the pins. Exemplarily, for the left automatic throttle switch assembly, the pin 14-7 and the pin 7-8 of the plug D11128P correspond to the micro switch S4, so the state of the micro switch S4 can be determined by measuring the resistance between the pin 14 and the pin 7 and the resistance between the pin 7 and the pin 8. The conventional measurement method needs to connect the multimeter to the pin 17 and the pin 7 first, and then connect the multimeter to the pin 7 and the pin 8 after completing the measurement. However, this process requires very high technical requirements for maintenance personnel, and it is difficult to avoid mistakes and omissions, and the maintenance efficiency is low. By using the dial switch group module in the embodiment of the application, the selected micro switch to be measured can be simply and conveniently detected.

[0029] As a preferred embodiment, each automatic throttle switch assembly includes micro switches S1-S9, each of which includes a first pin, a second pin and a third pin; the dial switch group module includes dial switches SW1-SW18, and a common pin logic selection unit;

[0030] The first end of the toggle switch SW1 is connected with the first pin of the micro switch S1; the first end of the toggle switch SW2 is connected with the third pin of the micro switch S1; the first end of the toggle switch SW3 is connected with the first pin of the micro switch S3; the first end of the toggle switch SW4 is connected with the third pin of the micro switch S2; the first end of the toggle switch SW5 is connected with the first pin of the micro switch S3; the first end of the toggle switch SW6 is connected with the third pin of the micro switch S3; the first end of the toggle switch SW7 is connected with the first pin of the micro switch S4; the first end of the toggle switch SW8 is connected with the third pin of the micro switch S4; the first end of the toggle switch SW9 is connected with the first pin of the micro switch S5; the first end of the toggle switch SW10 is connected with the third pin of the micro switch S5; the first end of the toggle switch SW11 is connected with the first pin of the micro switch S6; the first end of the toggle switch SW12 is connected with the third pin of the micro switch S6; the first end of the toggle switch SW13 is connected with the first pin of the micro switch S7; the first end of the toggle switch SW14 is connected with the third pin of the micro switch S7; the first end of the toggle switch SW15 is connected with the first pin of the micro switch S8; the first end of the toggle switch SW16 is connected with the third pin of the micro switch S8; the first end of the toggle switch SW17 is connected with the first pin of the micro switch S9; the first end of the toggle switch SW18 is connected with the third pin of the micro switch S9.

[0031] The second end of the toggle switch SW1-SW18 is connected with the first input end of the common pin logic selection unit and the resistance measurement module; the third end of the toggle switch SW1-SW18 is grounded.

[0032] The second pin of the micro switch S1-S9 is connected with the second input end of the common pin logic selection unit; the output end of the common pin logic selection unit is connected with the resistance measurement module.

[0033] It should be noted that each micro switch has three pins, which are C, NO and NC, wherein C is a common terminal, NO is a normally open terminal, and NC is a normally closed terminal. In aviation detection, each micro switch corresponds to three pins of the plug of the left automatic throttle switch assembly package. To detect whether a micro switch fails, the resistance values of NO-C and NC-C need to be detected respectively.

[0034] Exemplarily, in the Boeing 737NG aircraft, the first pin of S1 of the corresponding micro switch in the left automatic throttle lever assembly package and the right automatic throttle lever assembly package is pin 1, pin 2 and pin 3, wherein pin 2 is the pin corresponding to the common terminal, pin 1 is the pin corresponding to the normally open terminal, and pin 3 is the pin corresponding to the normally closed terminal. In the embodiment of the application, the pin corresponding to the common terminal is the second pin, the pin corresponding to the normally open terminal is the first pin, and the pin corresponding to the normally closed terminal is the third pin. In other embodiments, the pin corresponding to the normally closed terminal can be the first pin, and the pin corresponding to the normally open terminal can be the third pin. The specific naming rules do not affect the beneficial effects achieved by the application.

[0035] When the adjustment toggle switch is adjusted to the on state, the resistance between the two pins of the corresponding micro switch can be measured. As an example, when the adjustment toggle switch SW1 is adjusted to the on state, the first pin of the micro switch S1 is connected to the resistance measurement module through the adjustment toggle switch SW1, and the second pin of the micro switch S1 is connected to the resistance measurement module through the common pin logic selection unit, so as to realize the logical connection of the micro switch and the resistance measurement module, and measure the resistance value between the first pin and the second pin of the micro switch S1.

[0036] In some embodiments, the first pin, the second pin and the third pin of the micro switch S1 in the left throttle lever assembly package correspond to pin 1, pin 2 and pin 3 of the socket D11128P respectively; the first pin, the second pin and the third pin of the micro switch S2 correspond to pin 1, pin 2 and pin 3 of the socket D11130P respectively; the first pin, the second pin and the third pin of the micro switch S3 correspond to pin 4, pin 5 and pin 6 of the socket D11130P respectively; the first pin, the second pin and the third pin of the micro switch S4 correspond to pin 14, pin 7 and pin 8 of the socket D11128P respectively; the first pin, the second pin and the third pin of the micro switch S5 correspond to pin 7, pin 8 and pin 9 of the socket D11130P respectively; the first pin, the second pin and the third pin of the micro switch S6 correspond to pin 13, pin 14 and pin 15 of the socket D11130P respectively; the first pin, the second pin and the third pin of the micro switch S7 correspond to pin 16, pin 17 and pin 18 of the socket D11128P respectively; the first pin, the second pin and the third pin of the micro switch S8 correspond to pin 16, pin 17 and pin 18 of the socket D11128P respectively; and the first pin, the second pin and the third pin of the micro switch S9 correspond to pin 22, pin 23 and pin 24 of the socket D11128P respectively.

[0037] In some embodiments, the first pin, the second pin and the third pin of the micro switch S1 correspond to the No. 1 pin, the No. 2 pin and the No. 3 pin of the socket D11132P respectively; the first pin, the second pin and the third pin of the micro switch S2 correspond to the No. 1 pin, the No. 2 pin and the No. 3 pin of the socket D11134P respectively; the first pin, the second pin and the third pin of the micro switch S3 correspond to the No. 4 pin, the No. 5 pin and the No. 6 pin of the socket D11134P respectively; the first pin, the second pin and the third pin of the micro switch S4 correspond to the No. 14 pin, the No. 7 pin and the No. 8 pin of the socket D11132P respectively; the first pin, the second pin and the third pin of the micro switch S5 correspond to the No. 7 pin, the No. 8 pin and the No. 9 pin of the socket D11134P respectively; the first pin, the second pin and the third pin of the micro switch S6 correspond to the No. 13 pin, the No. 14 pin and the No. 15 pin of the socket D11134P respectively; the first pin, the second pin and the third pin of the micro switch S7 correspond to the No. 16 pin, the No. 17 pin and the No. 18 pin of the socket D11132P respectively; the first pin, the second pin and the third pin of the micro switch S8 correspond to the No. 16 pin, the No. 17 pin and the No. 18 pin of the socket D11132P respectively; the first pin, the second pin and the third pin of the micro switch S9 correspond to the No. 22 pin, the No. 23 pin and the No. 24 pin of the socket D11132P respectively.

[0038] Further, as a preferred embodiment, the common pin logic selection unit comprises exclusive OR gates U1~U9, AND gates U10~U18 and OR gate U19.

[0039] The first input end and the second input end of the XOR gate U1 are respectively connected with the second end of the toggle switch SW1 and the second end of the toggle switch SW2; the first input end and the second input end of the AND gate U10 are respectively connected with the output end of the XOR gate U1 and the second pin of the micro switch S1; the first input end and the second input end of the XOR gate U2 are respectively connected with the second end of the toggle switch SW3 and the second end of the toggle switch SW4; the first input end and the second input end of the AND gate U11 are respectively connected with the output end of the XOR gate U2 and the second pin of the micro switch S2; the first input end and the second input end of the XOR gate U3 are respectively connected with the second end of the toggle switch SW5 and the second end of the toggle switch SW6; the first input end and the second input end of the AND gate U12 are respectively connected with the output end of the XOR gate U3 and the second pin of the micro switch S3; the first input end and the second input end of the XOR gate U4 are respectively connected with the second end of the toggle switch SW7 and the second end of the toggle switch SW8; the first input end and the second input end of the AND gate U13 are respectively connected with the output end of the XOR gate U4 and the second pin of the micro switch S4; the first input end and the second input end of the XOR gate U5 are respectively connected with the second end of the toggle switch SW9 and the second end of the toggle switch SW10; the first input end and the second input end of the AND gate U14 are respectively connected with the output end of the XOR gate U5 and the second pin of the micro switch S5; the first input end and the second input end of the XOR gate U6 are respectively connected with the second end of the toggle switch SW11 and the second end of the toggle switch SW12; the first input end and the second input end of the AND gate U15 are respectively connected with the output end of the XOR gate U6 and the second pin of the micro switch S6; the first input end and the second input end of the XOR gate U7 are respectively connected with the second end of the toggle switch SW13 and the second end of the toggle switch SW14; the first input end and the second input end of the AND gate U16 are respectively connected with the output end of the XOR gate U7 and the second pin of the micro switch S7; the first input end and the second input end of the XOR gate U8 are respectively connected with the second end of the toggle switch SW15 and the second end of the toggle switch SW16; the first input end and the second input end of the AND gate U17 are respectively connected with the output end of the XOR gate U8 and the second pin of the micro switch S8; the first input end and the second input end of the XOR gate U9 are respectively connected with the second end of the toggle switch SW17 and the second end of the toggle switch SW18; the first input end and the second input end of the AND gate U18 are respectively connected with the output end of the XOR gate U9 and the second pin of the micro switch S9; the output ends of the AND gates U10-U18 are all connected with the input end of the OR gate U19, and the output end of the OR gate U19 is connected with the input end of the resistance measurement module.

[0040] It can be understood that in the embodiment of the present application, there are two toggle switches corresponding to the second pin of the same micro switch, and in the normal use state of the micro switch, the NC terminal and the NO terminal will not be connected to the aircraft at the same time, so during the measurement, only the resistance between the first pin and the second pin or the resistance between the second pin and the third pin is measured. Through the above-mentioned logical gate connection structure, the selection of the second pin of the micro switch S1-S9 can be realized according to the connection state of the toggle switch. Specifically: when the toggle switch SW1 or SW2 is turned on, the second pin of the micro switch S1 is connected to the resistance measurement module through the output end of the common pin logical selection unit, and when the toggle switches SW1 and SW2 are turned on at the same time, the resistance measurement module does not access the effective signal, so the resistance measurement will not be performed. Similarly, when the toggle switch SW3 or SW4 is turned on, the second pin of the micro switch S2 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW5 or SW6 is turned on, the second pin of the micro switch S3 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW7 or SW8 is turned on, the second pin of the micro switch S4 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW9 or SW10 is turned on, the second pin of the micro switch S5 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW11 or SW12 is turned on, the second pin of the micro switch S6 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW13 or SW14 is turned on, the second pin of the micro switch S7 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW15 or SW16 is turned on, the second pin of the micro switch S8 is connected to the resistance measurement module through the output end of the common pin logical selection unit; when the toggle switch SW17 or SW18 is turned on, the second pin of the micro switch S9 is connected to the resistance measurement module through the output end of the common pin logical selection unit.

[0041] Due to the complex operation mode of the internal system of the aircraft, in order to ensure that the pins of different micro switches are not connected to the resistance measurement module respectively and to ensure the safety of the aircraft components, as a more preferred embodiment, the OR gate U19 in the above-mentioned scheme can be further improved, and through the design of the logical gate, only one of the micro switches S1-S9 can be connected to the resistance measurement module.

[0042] As a preferred embodiment, the resistance measurement module comprises a resistance conversion unit; the resistance measurement module comprises a resistance conversion unit; the resistance conversion unit is used to convert the electrical parameter between the first input end and the second input end of the resistance measurement module into resistance and transmit it to the output end;

[0043] The first input end of the resistance conversion unit is electrically connected with the second end of the toggle switch SW1-SW18; the second input end of the resistance conversion unit is electrically connected with the output end of the OR gate U19; and the output end of the resistance conversion unit is electrically connected with the input end of the dynamic display module.

[0044] In the embodiment of the present application, the first input end of the resistance conversion unit is connected with the first end or the third end of the micro switch, and the first input end of the resistance conversion unit is connected with the second end of the micro switch, so as to realize the resistance measurement of the micro switch. The structure design of the resistance conversion unit is the prior art, and will not be described in more details.

[0045] As a preferred embodiment, the dynamic display module comprises a display screen.

[0046] The first input end of the display screen is connected with the output end of the resistance conversion unit, and the second input end of the display screen is connected with the control display unit of the aircraft system, which is used for displaying the throttle lever resolver angle of the automatic throttle switch assembly.

[0047] It should be noted that the throttle lever controls different micro switches to be connected with different systems of the aircraft at different angles. For example, for the micro switch S1, when the throttle lever resolver angle (TRA, Throttle Resolver Angle) is in the range of 8.00-42.00, the pin 1-2 is in the disconnected state, and the pin 2-3 is in the connected state; when it is in the range of 46.00-82.00, the pin 1-2 is in the connected state, and the pin 2-3 is in the disconnected state. During the measurement, only the plug of the throttle switch assembly package is taken off from the aircraft and inserted into the socket of the test device of the automatic throttle switch assembly, and then the reverse thrust lever is directly operated on the aircraft to make the throttle lever resolver angle at the angle required for the micro switch test. At this time, the throttle lever resolver angle is directly displayed on the control display unit of the aircraft system, and the second input end of the display screen is connected with the control display unit of the aircraft system, so that the TRA can be directly viewed on the test device of the automatic throttle switch assembly.

[0048] In the embodiment of the present application, during the test of the micro switch, firstly, whether the resistance exceeds the preset threshold value in the normal operation is analyzed, and secondly, the throttle lever resolver angle is controlled at the switching position of the two states, and the resistance fluctuation during the switching is analyzed by the display screen. Preferably, the fluctuation of the currently measured micro switch, pin and resistance is displayed on the display screen. Compared with the method of using the multimeter for measurement in the prior art, the change of the resistance can be better analyzed, and the test process is simple and convenient.

[0049] In some preferred embodiments, the testing device of the automatic throttle lever assembly is as shown in Figure 2 In use, first, the plug D11128P, D11130P of the left throttle lever assembly package is inserted into the corresponding socket, and then the throttle lever is adjusted to a suitable angle in the cockpit of the aircraft, and the specific angle value can be obtained according to the corresponding relationship between the micro switch and the throttle lever in the aircraft design manual. Then, the toggle switches SW1-SW18 (not shown in the figure) are adjusted to measure the micro switch S1-S9.

[0050] For example, the control TRA is in the interval of 8.00-42.00 or 46.00-82.00, the pin 1-2 of the micro switch S1 is adjusted to the open state, that is, the toggle switch SW1 is toggled to the open state. When only one toggle switch in the testing device is in the open state, the measured resistance value is displayed in the dynamic display module. The first test method of the embodiment of the present application is that if the detected resistance value exceeds the preset threshold value, it is considered that the micro switch is faulty, and in the embodiment of the present application, the preset threshold value is 2Ω. The second test method of the embodiment of the present application is that the control TRA is in the switching state between 42.00-46.00, and the actual state switching TRA value is analyzed according to the fluctuation of the resistance, and if the fluctuation of the resistance exceeds the preset range, it is considered that the micro switch is faulty.

[0051] The testing device of the automatic throttle lever assembly provided by the embodiment of the present application can conveniently select the micro switch for testing and automatically display the test results, so as to realize rapid troubleshooting and effectively improve the efficiency of line maintenance work.

[0052] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the scope of protection of the present application.

Claims

1. A testing device for automatic throttle quadrant assemblies, each automatic throttle quadrant assembly comprising a plug and a plurality of microswitches; characterized in that, The test device of the automatic throttle lever assembly comprises a module of assembly socket, a module of toggle switch group, a module of resistance measurement and a module of dynamic display connected in sequence; The module of assembly socket comprises sockets equal in number to the plugs for connecting the plugs to obtain the output of the micro-switches; the module of toggle switch group comprises toggle switches equal in number to twice the number of the micro-switches, each toggle switch being used to form a measuring path between two pins of a micro-switch; the module of resistance measurement is used to measure the resistance value of the measuring path; and the module of dynamic display is used to display the resistance value. Each automatic throttle lever assembly comprises micro-switches S1-S9, each micro-switch comprising a first pin, a second pin and a third pin; the module of toggle switch group comprises toggle switches SW1-SW18 and a common pin logic selection unit; The first end of the toggle switch SW1 is connected to the first pin of the micro-switch S1; the first end of the toggle switch SW2 is connected to the third pin of the micro-switch S1; the first end of the toggle switch SW3 is connected to the first pin of the micro-switch S2; the first end of the toggle switch SW4 is connected to the third pin of the micro-switch S2; the first end of the toggle switch SW5 is connected to the first pin of the micro-switch S3; the first end of the toggle switch SW6 is connected to the third pin of the micro-switch S3; the first end of the toggle switch SW7 is connected to the first pin of the micro-switch S4; the first end of the toggle switch SW8 is connected to the third pin of the micro-switch S4; the first end of the toggle switch SW9 is connected to the first pin of the micro-switch S5; the first end of the toggle switch SW10 is connected to the third pin of the micro-switch S5; the first end of the toggle switch SW11 is connected to the first pin of the micro-switch S6; the first end of the toggle switch SW12 is connected to the third pin of the micro-switch S6; the first end of the toggle switch SW13 is connected to the first pin of the micro-switch S7; the first end of the toggle switch SW14 is connected to the third pin of the micro-switch S7; the first end of the toggle switch SW15 is connected to the first pin of the micro-switch S8; the first end of the toggle switch SW16 is connected to the third pin of the micro-switch S8; the first end of the toggle switch SW17 is connected to the first pin of the micro-switch S9; and the first end of the toggle switch SW18 is connected to the third pin of the micro-switch S9. The second ends of the toggle switches SW1-SW18 are connected to the first input end of the common pin logic selection unit and the input end of the module of resistance measurement; and the third ends of the toggle switches SW1-SW18 are grounded. The second pins of the micro-switches S1-S9 are connected to the second input end of the common pin logic selection unit; and the output end of the common pin logic selection unit is connected to the input end of the module of resistance measurement.

2. A test device for an automatic throttle assembly as defined in claim 1, wherein, The common pin logic selection unit comprises exclusive OR gates U1-U9, AND gates U10-U18 and an OR gate U19. The first input end and the second input end of the XOR gate U1 are respectively connected with the second end of the toggle switch SW1 and the second end of the toggle switch SW2; the first input end and the second input end of the AND gate U10 are respectively connected with the output end of the XOR gate U1 and the second pin of the micro switch S1; the first input end and the second input end of the XOR gate U2 are respectively connected with the second end of the toggle switch SW3 and the second end of the toggle switch SW4; the first input end and the second input end of the AND gate U11 are respectively connected with the output end of the XOR gate U2 and the second pin of the micro switch S2; the first input end and the second input end of the XOR gate U3 are respectively connected with the second end of the toggle switch SW5 and the second end of the toggle switch SW6; the first input end and the second input end of the AND gate U12 are respectively connected with the output end of the XOR gate U3 and the second pin of the micro switch S3; the first input end and the second input end of the XOR gate U4 are respectively connected with the second end of the toggle switch SW7 and the second end of the toggle switch SW8; the first input end and the second input end of the AND gate U13 are respectively connected with the output end of the XOR gate U4 and the second pin of the micro switch S4; the first input end and the second input end of the XOR gate U5 are respectively connected with the second end of the toggle switch SW9 and the second end of the toggle switch SW10; the first input end and the second input end of the AND gate U14 are respectively connected with the output end of the XOR gate U5 and the second pin of the micro switch S5; the first input end and the second input end of the XOR gate U6 are respectively connected with the second end of the toggle switch SW11 and the second end of the toggle switch SW12; the first input end and the second input end of the AND gate U15 are respectively connected with the output end of the XOR gate U6 and the second pin of the micro switch S6; the first input end and the second input end of the XOR gate U7 are respectively connected with the second end of the toggle switch SW13 and the second end of the toggle switch SW14; the first input end and the second input end of the AND gate U16 are respectively connected with the output end of the XOR gate U7 and the second pin of the micro switch S7; the first input end and the second input end of the XOR gate U8 are respectively connected with the second end of the toggle switch SW15 and the second end of the toggle switch SW16; the first input end and the second input end of the AND gate U17 are respectively connected with the output end of the XOR gate U8 and the second pin of the micro switch S8; the first input end and the second input end of the XOR gate U9 are respectively connected with the second end of the toggle switch SW17 and the second end of the toggle switch SW18; the first input end and the second input end of the AND gate U18 are respectively connected with the output end of the XOR gate U9 and the second pin of the micro switch S9; the output ends of the AND gates U10-U18 are all connected with the input end of the OR gate U19, and the output end of the OR gate U19 is connected with the input end of the resistance measurement module.

3. A test device for an automatic throttle assembly as defined in claim 2 wherein, The resistance measurement module comprises a resistance conversion unit; the resistance conversion unit is used for converting an electrical parameter between the first input end and the second input end of the resistance conversion unit into resistance and transmitting to the output end; The first input end of the resistance conversion unit is electrically connected with the second end of the toggle switch SW1-SW18; the second input end of the resistance conversion unit is electrically connected with the output end of the OR gate U19; and the output end of the resistance conversion unit is electrically connected with the input end of the dynamic display module.

4. A test device for an automatic throttle assembly as defined in claim 3 wherein, The dynamic display module comprises a display screen. The first input end of the display screen is connected with the output end of the resistance conversion unit, and the second input end of the display screen is connected with a control display unit of an aircraft system, and the control display unit is used for displaying the resolver angle of the throttle lever of the automatic throttle potentiometer assembly.

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