Testing device for automatic accelerator switch assembly

Abstract

The invention discloses a testing device for automatic accelerator switch assemblies, and relates to the technical field of aviation equipment maintenance. Each automatic accelerator switch assembly comprises a plug and a plurality of micro switches; the testing device of the automatic accelerator switch assembly comprises an assembly socket module, a toggle switch group module, a resistance measuring module and a dynamic display module which are connected in sequence. The assembly socket module comprises sockets of which the number is the same as that of the plugs, and is used for connecting the plugs to obtain the output of the micro switch; the toggle switch group module comprises toggle switches of which the number is double of that of the micro switches, and each toggle switch is used for forming a measurement path between two contact pins of one micro switch; the resistance measurement module is used for measuring the resistance value of the measurement path; the dynamic display module is used for displaying the resistance value. By adopting the embodiment of the invention, the micro switch to be tested can be conveniently selected, and the test result can be automatically displayed, so that quick troubleshooting can be realized, and the efficiency of flight line maintenance work can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of aviation equipment maintenance, and in particular to a testing device for an automatic throttle switch assembly. Background Art

[0002] The Autothrottle Switch Pack of the Boeing 737NG aircraft triggers the microswitch within a preset range through a mechanical linkage according to the change in the throttle lever angle, connects the corresponding control circuit, provides a logic signal, and starts the corresponding aircraft system function.

[0003] Currently, airline maintenance units use universal electric meters to measure the electrical parameters and detect the logical relationships of the on and off switches. However, this method requires a lot of manual work and is prone to human error. In a confined and narrow working space, the testing, adjustment and troubleshooting of switch components are inefficient and difficult. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to simplify the testing process of the automatic throttle switch assembly, and provide a testing device for the automatic throttle switch assembly, which can conveniently select the microswitch for testing and automatically display the test results to achieve rapid troubleshooting and effectively improve the efficiency of route maintenance work.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a test device for an automatic throttle switch assembly, each automatic throttle switch assembly includes a plug and a plurality of micro switches; the test device for the automatic throttle switch assembly includes a component socket module, a toggle switch group module, a resistance measurement module and a dynamic display module connected in sequence;

[0006] The component socket module includes sockets with the same number as the plugs, which are used to connect the plugs to obtain the output of the microswitch; the toggle switch group module includes twice the number of toggle switches as the microswitch, and each toggle switch is used to form a measurement path between two pins of a microswitch; 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 scheme, each automatic throttle switch assembly includes micro switches S1 to S9, each micro switch includes a first pin, a second pin and a third pin; the toggle switch group module includes toggle switches SW1 to SW18 and a common pin logic selection unit;

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

[0009] The second ends of the toggle switches SW1 to SW18 are all connected to the first input end of the common pin logic selection unit and the resistance measurement module; the third ends of the toggle switches SW1 to SW18 are all grounded;

[0010] The second pins of the micro switches S1 to S9 are all connected to the second input end of the common pin logic selection unit; the output end of the common pin logic selection unit is connected to the resistance measurement module.

[0011] As an improvement of the above solution, the shared pin logic selection unit includes XOR gates U1 to U9, AND gates U10 to U18 and OR gate U19;

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

[0013] As an improvement of the above solution, the resistance measurement module includes a resistance conversion unit; the resistance conversion unit is used to convert the electrical parameter between the first input terminal and the second input terminal of the resistance measurement module into resistance and transmit it to the output terminal;

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

[0015] As an improvement of the above solution, the dynamic display module includes a display screen;

[0016] The first input end of the display screen is connected to the output end of the resistance conversion unit, and the second input end of the display screen is connected to the control display unit of the aircraft system, and the control display unit is used to display the throttle lever solution angle of the automatic throttle electric switch assembly.

[0017] Compared with the prior art, the present invention discloses a test device for an automatic throttle switch assembly, comprising a assembly socket module, a toggle switch group module, a resistance measurement module and a dynamic display module connected in sequence; wherein the assembly socket module comprises the same number of sockets as the plugs, which are used to connect the plugs to obtain the output of the micro switch; the toggle switch group module comprises twice the number of toggle switches as the micro switch, and each toggle switch is used to form 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. By adopting the embodiment of the present invention, the micro switch to be tested can be conveniently selected, and the test results can be automatically displayed to achieve rapid troubleshooting and effectively improve the efficiency of route maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a test device for an automatic throttle switch assembly provided by an embodiment of the present invention;

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

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the specification and claims, it is to be understood that the terms first, second, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0022] The Autothrottle Switch Pack triggers the microswitch within a preset range through a mechanical link according to the change in the throttle lever angle, connects 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 switch on and off, the switch assembly has unstable reliability, a high instantaneous failure rate, strong hidden faults, and a large maintenance workload; it provides signals to multiple systems, and the maintenance code output by the self-test equipment is not very targeted, and the fault analysis and fault location are not accurate and have strong repeatability. At present, airline maintenance units generally do not perform maintenance through self-test equipment, but use general-purpose meters to measure the electrical parameters and detect the logical relationship of the switch on and off. However, the existing technology requires repositioning the pins and manually recording the real-time resistance value when testing each microswitch, which requires maintenance personnel to have high professionalism, low fault tolerance, and high labor costs.

[0023] Based on the above considerations, an embodiment of the present invention provides a test device for an automatic throttle switch assembly. It should be noted that each automatic throttle switch assembly includes a plug and a plurality of micro switches.

[0024] In the embodiments of the present invention, the automatic throttle switch assembly of the Boeing 737NG aircraft is taken as an example. Each 737NG aircraft is equipped with two automatic throttle switch assembly packages, namely the left automatic throttle switch assembly package and the right automatic throttle switch assembly package, and each assembly package corresponds to a thrust rod assembly. Each thrust rod assembly drives its corresponding assembly package through a mechanical connecting rod. Each assembly package has nine switches, which respectively input discrete signals of the thrust rod position to multiple systems.

[0025] See also Figure 1 , in this embodiment, the test device 10 of the automatic throttle switch assembly includes a component socket module 11, a toggle 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, which are used to connect the plugs to obtain the output of the microswitch; the toggle switch group module 12 includes twice the number of toggle switches as the microswitch, and each toggle switch is used to form a measurement path between two pins of a microswitch; the resistance measurement module 13 is used to measure the resistance value of the measurement 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; 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 present invention is 4, corresponding to plugs D11128P, D11130P, D11132P and D11134P respectively.

[0028] It should also be noted that different combinations of pins correspond to different micro switches. In the embodiment of the present invention, the connectivity and operating status of the micro switch are reflected by measuring the resistance value between the pins. For example, for the left automatic throttle switch assembly, the pins 14-7 and pins 7-8 of the plug D11128P correspond to the micro switch S4. Therefore, the state of the micro switch S4 can be determined by measuring the resistance between pin 14 and pin 7, and the resistance between pin 7 and pin 8. The traditional measurement method requires that the multimeter be connected to pin 17 and pin 7 first, and then the multimeter is connected to pin 7 and pin 8 after the measurement is completed. However, this process requires very high technical requirements for maintenance personnel, and it is difficult to avoid errors and omissions, and the maintenance efficiency is low. Using the embodiment of the present invention, the micro switch to be tested can be selected simply and conveniently through the fluctuation switch group module, and the micro switch can be tested.

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

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

[0031] The second ends of the toggle switches SW1 to SW18 are all connected to the first input end of the common pin logic selection unit and the resistance measurement module; the third ends of the toggle switches SW1 to SW18 are all grounded;

[0032] The second pins of the micro switches S1 to S9 are all connected to the second input end of the common pin logic selection unit; the output end of the common pin logic selection unit is connected to the resistance measurement module.

[0033] It should be noted that each micro switch has three pins, namely C, NO and NC, among which C is a common terminal, NO is a normally open terminal, and NC is a normally closed terminal. In aviation testing, each micro switch corresponds to the three pins of the plug of the left automatic throttle switch assembly package. To detect whether a micro switch is faulty, it is necessary to test the resistance values ​​of NO-C and NC-C respectively.

[0034] Exemplarily, in a Boeing 737NG aircraft, the first pins S1 of the micro-switches corresponding to the left automatic throttle switch assembly package and the right automatic throttle switch assembly package are pins 1, 2, and 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 an embodiment of the present invention, 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 may be the first pin, and the pin corresponding to the normally open terminal may be the third pin. The specific naming rules do not affect the beneficial effects achieved by the present invention.

[0035] When the toggle switch is adjusted to the on state, the resistance between the two pins of the corresponding micro switch can be measured. For example, when the 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 toggle switch SW1, and the second pin of the micro switch S2 is connected to the resistance measurement module through the shared pin logic selection unit, thereby realizing the logical connection between the micro switch and the resistance measurement module, and measuring the resistance 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 microswitch S1 in the left throttle switch assembly package correspond to pins 1, 2 and 3 of the socket D11128P respectively; the first pin, the second pin and the third pin of the microswitch S2 correspond to pins 1, 2 and 3 of the socket D11130P respectively; the first pin, the second pin and the third pin of the microswitch S3 correspond to pins 4, 5 and 6 of the socket D11130P respectively; the first pin, the second pin and the third pin of the microswitch S4 correspond to pins 14, 7 and 8 of the socket D11128P respectively; the first pin, the second pin and the third pin of the microswitch S5 correspond to pins 14, 7 and 8 of the socket D11128P respectively; the first pin, the second pin and the third pin of the microswitch S5 correspond to pins 14, 7 and 8 of the socket D11128P respectively. The first pin, the second pin and the third pin of the microswitch S6 correspond to pins No. 13, No. 14 and No. 15 of the socket D11130P respectively; the first pin, the second pin and the third pin of the microswitch S7 correspond to pins No. 16, No. 17 and No. 18 of the socket D11128P respectively; the first pin, the second pin and the third pin of the microswitch S8 correspond to pins No. 16, No. 17 and No. 18 of the socket D11128P respectively; the first pin, the second pin and the third pin of the microswitch S9 correspond to pins No. 22, No. 23 and No. 24 of the socket D11128P respectively.

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

[0038] Further, as a preferred implementation, the shared pin logic selection unit includes XOR gates U1 to U9, AND gates U10 to U18 and OR gate U19;

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

[0040] It can be understood that in the embodiment of the present invention, there will be two toggle switches corresponding to the second pin of the same microswitch, and when the microswitch is in normal use, the NC terminal and the NO terminal will not be connected to the aircraft at the same time. Therefore, during 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 logic gate connection structure, the second pin of the microswitches S1~S9 can be selected according to the connectivity of the toggle switch. Specifically: when the toggle switch SW1 or SW2 is turned on, the second pin of the microswitch S1 is connected to the resistance measurement module through the output end of the common pin logic selection unit, and when the toggle switches SW1 and SW2 are turned on at the same time, the resistance measurement module receives an ineffective signal, so the resistance will not be measured; similarly, when the toggle switch SW3 or SW4 is turned on, the second pin of the microswitch S2 is connected to the resistance measurement module through the output end of the common pin logic selection unit; when the toggle switch SW5 or SW6 is turned on, the second pin of the microswitch S3 is connected to the resistance measurement module through the output end of the common pin logic selection unit; when the toggle switch SW7 or SW8 is turned on, the second pin of the microswitch S4 is connected to the resistance measurement module through the output end of the common pin logic selection unit; When SW9 or SW10 is turned on, the second pin of the microswitch S5 is connected to the resistance measurement module through the output end of the common pin logic selection unit; when the toggle switch SW11 or SW12 is turned on, the second pin of the microswitch S6 is connected to the resistance measurement module through the output end of the common pin logic selection unit; when the toggle switch SW13 or SW14 is turned on, the second pin of the microswitch S7 is connected to the resistance measurement module through the output end of the common pin logic selection unit; when the toggle switch SW15 or SW16 is turned on, the second pin of the microswitch S8 is connected to the resistance measurement module through the output end of the common pin logic selection unit; when the toggle switch SW17 or SW18 is turned on, the second pin of the microswitch S9 is connected to the resistance measurement module through the output end of the common pin logic selection unit.

[0041] Due to the complex operation mode of the aircraft's internal system, in order to ensure that the pins of different microswitches are not connected to the resistance measurement module separately and to ensure the safety of aircraft components, as a more preferred implementation, the OR gate U19 in the above scheme can be further improved. Through the design of logic gates, only one of the microswitches S1 to S9 can be connected to the resistance measurement module.

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

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

[0044] In the embodiment of the present invention, the first input end of the resistance conversion unit is connected to the first end or the third end of the micro switch, and the first input end of the resistance conversion unit is connected to the second end of the micro switch to achieve the resistance measurement of the micro switch. The structural design of the resistance conversion unit is a prior art and will not be further described here.

[0045] As a preferred implementation, the dynamic display module includes a display screen;

[0046] The first input end of the display screen is connected to the output end of the resistance conversion unit, and the second input end of the display screen is connected to the control display unit of the aircraft system, and the control display unit is used to display the throttle lever solution angle of the automatic throttle electric switch assembly.

[0047] It should be noted that the throttle lever will control different micro switches to connect with various aircraft systems at different angles. Exemplarily, for micro switch S1, when the throttle lever resolver angle (TRA) is in the range of 8.00 to 42.00, pins 1-2 are disconnected and pins 2-3 are connected; when it is in the range of 46.00 to 82.00, pins 1 to 2 are connected and pins 2-3 are disconnected. When measuring, it is only necessary to remove the plug of the throttle switch assembly package from the aircraft and insert it into the socket of the test device of the automatic throttle switch assembly described in the present invention. Then, directly operate the reverse thrust lever on the aircraft so that the throttle lever resolver angle is at the angle required for the micro switch test. At this time, the throttle lever resolver angle will be directly displayed on the control display unit of the aircraft system. By connecting the second input end of the display screen to the control display unit of the aircraft system, TRA can be directly viewed on the test device of the automatic throttle switch assembly.

[0048] In the embodiment of the present invention, when testing the micro switch, firstly, it is analyzed whether the resistance exceeds the preset threshold value under normal operation, and secondly, the throttle lever resolution angle is controlled at the switching point of the two states, and the resistance fluctuation during the switching is analyzed through the display screen. Preferably, the fluctuation of the micro switch, pin and resistance currently measured will be displayed on the display screen. Compared with the method of measuring with a multimeter in the prior art, the change of resistance can be better analyzed, and the test process is simple and convenient.

[0049] In some preferred embodiments, the test device of the automatic throttle switch assembly is as follows Figure 2 When in use, first insert the plugs D11128P and D11130P of the left throttle switch assembly package into the corresponding sockets, and then adjust the throttle lever to a suitable angle in the cockpit of the aircraft. The specific angle value can be obtained based on the corresponding relationship between the microswitch and the throttle lever solution angle in the aircraft design manual. Then adjust the toggle switches SW1 to SW18 (not marked in the figure) to achieve the measurement of the microswitches S1 to S9.

[0050] Exemplarily, TRA is controlled in the range of 8.00 to 42.00 or 46.00 to 82.00, and the toggle switch corresponding to pin 1-2 of microswitch S1 is adjusted to the on state, that is, the toggle switch SW1 is turned on. When only one toggle switch in the test device is in the on state, the measured resistance value is displayed in the dynamic display module. The first test method of the embodiment of the present invention is that if the resistance value detected exceeds a preset threshold value, it is considered that the microswitch is faulty. In the embodiment of the present invention, the preset threshold value is 2Ω. The second test method of the embodiment of the present invention is to control TRA at the switching point of two states, that is, between 42.00 and 46.00, and analyze the actual state switching TRA value according to the fluctuation of the resistance. If the fluctuation of the resistance exceeds the preset range, it is considered that the microswitch is faulty.

[0051] A test device for an automatic throttle switch assembly provided by an embodiment of the present invention can conveniently select a microswitch for testing and automatically display the test results to achieve rapid troubleshooting and effectively improve the efficiency of route maintenance work.

[0052] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A test device for an automatic throttle switch assembly, each automatic throttle switch assembly comprising a plug and a plurality of micro switches; characterized in that: The test device of the automatic throttle switch assembly comprises a component socket module, a toggle switch group module, a resistance measurement module and a dynamic display module which are connected in sequence; The component socket module includes sockets with the same number as the plugs, which are used to connect the plugs to obtain the output of the microswitch; the toggle switch group module includes twice the number of toggle switches as the microswitch, and each toggle switch is used to form a measurement path between two pins of a microswitch; 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.

2. A test device for an automatic throttle switch assembly as claimed in claim 1, characterized in that: Each of the automatic throttle switch components includes micro switches S1-S9, each of which includes a first pin, a second pin and a third pin; the toggle switch group module includes 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 microswitch S1; the first end of the toggle switch SW2 is connected to the third pin of the microswitch S1; the first end of the toggle switch SW3 is connected to the first pin of the microswitch S3; the first end of the toggle switch SW4 is connected to the third pin of the microswitch S2; the first end of the toggle switch SW5 is connected to the first pin of the microswitch S3; the first end of the toggle switch SW6 is connected to the third pin of the microswitch S3; the first end of the toggle switch SW7 is connected to the first pin of the microswitch S4; the first end of the toggle switch SW8 is connected to the third pin of the microswitch S4; the first end of the toggle switch SW9 is connected to the first pin of the microswitch S5; The first end of SW10 is connected to the third pin of microswitch S5; the first end of toggle switch SW11 is connected to the first pin of microswitch S6; the first end of toggle switch SW12 is connected to the third pin of microswitch S6; the first end of toggle switch SW13 is connected to the first pin of microswitch S7; the first end of toggle switch SW14 is connected to the third pin of microswitch S7; the first end of toggle switch SW15 is connected to the first pin of microswitch S8; the first end of toggle switch SW16 is connected to the third pin of microswitch S8; the first end of toggle switch SW17 is connected to the first pin of microswitch S9; the first end of toggle switch SW18 is connected to the third pin of microswitch S9; The second ends of the toggle switches SW1 to SW18 are all connected to the first input end of the common pin logic selection unit and the resistance measurement module; the third ends of the toggle switches SW1 to SW18 are all grounded; The second pins of the micro switches S1 to S9 are all connected to the second input end of the common pin logic selection unit; the output end of the common pin logic selection unit is connected to the resistance measurement module.

3. A test device for an automatic throttle switch assembly as claimed in claim 2, characterized in that: The shared pin logic selection unit includes XOR gates U1 to U9, AND gates U10 to U18 and OR gate U19; The first input terminal and the second input terminal of the XOR gate U1 are respectively connected to the second terminal of the toggle switch SW1 and the second terminal of the toggle switch SW2; the first input terminal and the second input terminal of the AND gate U10 are respectively connected to the output terminal of the XOR gate U1 and the second pin of the micro switch S1; the first input terminal and the second input terminal of the XOR gate U2 are respectively connected to the second terminal of the toggle switch SW3 and the second terminal of the toggle switch SW4; the first input terminal and the second input terminal of the AND gate U11 are respectively connected to the output terminal of the XOR gate U2 and the second pin of the micro switch S2; the first input terminal and the second input terminal of the XOR gate U3 are respectively connected to the second terminal of the toggle switch SW5 and the second pin of the toggle switch The first input terminal and the second input terminal of the AND gate U12 are respectively connected to the output terminal of the XOR gate U3 and the second pin of the micro switch S3; the first input terminal and the second input terminal of the XOR gate U4 are respectively connected to the second terminal of the toggle switch SW7 and the second terminal of the toggle switch SW8; the first input terminal and the second input terminal of the AND gate U13 are respectively connected to the output terminal of the XOR gate U4 and the second pin of the micro switch S4; the first input terminal and the second input terminal of the XOR gate U5 are respectively connected to the second terminal of the toggle switch SW9 and the second terminal of the toggle switch SW10; the first input terminal and the second input terminal of the AND gate U14 are respectively connected to the output terminal of the XOR gate U5 The first input terminal and the second input terminal 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 terminal and the second input terminal of the AND gate U15 are connected to the output terminal of the XOR gate U6 and the second pin of the micro switch S6 respectively; the first input terminal and the second input terminal 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 terminal and the second input terminal of the AND gate U16 are connected to the output terminal of the XOR gate U7 and the second pin of the micro switch S7 respectively; the first input terminal and the second input terminal of the XOR gate U8 are connected to the output terminal of the XOR gate U8 and the second input terminal of the micro switch S7 respectively. The first input terminal and the second input terminal of the AND gate U17 are respectively connected to the output terminal of the XOR gate U8 and the second pin of the micro switch S8; the first input terminal and the second input terminal of the XOR gate U9 are respectively connected to the second terminal of the toggle switch SW17 and the second terminal of the toggle switch SW18; the first input terminal and the second input terminal of the AND gate U18 are respectively connected to the output terminal of the XOR gate U9 and the second pin of the micro switch S9; the output terminals of the AND gates U10~U18 are all connected to the input terminal of the OR gate U19, and the output terminal of the OR gate U19 is connected to the input terminal of the resistance measurement module.

4. A test device for an automatic throttle switch assembly as claimed in claim 3, characterized in that: The resistance measurement module includes a resistance conversion unit; the resistance conversion unit is used to convert the electrical parameter between the first input terminal and the second input terminal of the resistance measurement module into resistance and transmit it to the output terminal; The first input end of the resistance conversion unit is electrically connected to the second ends of the toggle switches SW1-SW18; the second input end of the resistance conversion unit is electrically connected to the output end of the OR gate U19; the output end of the resistance conversion unit is electrically connected to the input end of the dynamic display module.

5. The test device for an automatic throttle switch assembly as claimed in claim 1, characterized in that: The dynamic display module includes a display screen; The first input end of the display screen is connected to the output end of the resistance conversion unit, and the second input end of the display screen is connected to the control display unit of the aircraft system, and the control display unit is used to display the throttle lever solution angle of the automatic throttle electric switch assembly.

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