Starter generator detection system

Abstract

The utility model provides a starter generator detection system, comprising a dragging mechanism which has an adjustable output rotating speed and is in transmission connection with a starter generator, and the output end of the dragging mechanism is provided with a torque detection assembly and a rotating speed detection assembly; the controller test circuit comprises a voltage regulator assembly and a controller interface; the generator test circuit comprises an output end interface, an excitation end interface and a grounding end interface which can be respectively connected with the output end, the excitation end and the grounding end of the starting generator; the generator test circuit further comprises an excitation branch circuit, a voltage detection branch circuit, a current detection branch circuit and a load branch circuit. According to the technical scheme of the utility model, the starter generator can be conveniently detected, the detection precision meets the test requirement, and the detection and maintenance efficiency of the starter generator can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of starter generator testing, in particular to a starter generator detection system. Background Art

[0002] Starter generators are commonly used to start aircraft engines. Once the engines are ignited, they enter a power generation state, driven by the engines to supply power to all electrical loads. They are the core of the aircraft's power supply system. To ensure stable starting and power generation, starter generator maintenance is crucial. Regular maintenance and troubleshooting of starter generators require testing of the starter generator and its controller to ensure that their operating parameters meet standards.

[0003] Due to the large size and weight of starter generators and the complex system, there is no detection equipment suitable for various types of starter generators in the existing technology. The maintenance and inspection of starter generators mainly involves returning them to the factory for testing, which wastes a lot of time, has low testing efficiency and high cost. Summary of the Invention

[0004] In order to better solve the above problems, an embodiment of the present invention provides a starter generator detection system, which facilitates the detection of the starter generator, and the detection accuracy meets the test requirements, which helps to improve the detection and maintenance efficiency of the starter generator.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides a starter generator detection system, comprising: a drag mechanism, wherein the output speed of the drag mechanism is adjustable, the output end of the drag mechanism can be connected to the motor input end of the starter generator by transmission, and a torque detection component and a speed detection component are provided at the output end of the drag mechanism; a controller test circuit, wherein the controller test circuit includes a voltage regulator component and a controller interface connected to the voltage regulator component, and the controller interface can be connected to the controller of the starter generator; a generator test circuit, wherein the generator test circuit includes an output end interface, an excitation end interface and a ground end interface, which can be connected to the output end, the excitation end and the ground end of the starter generator respectively; the output end interface is also connected to the TU port and the F port of the voltage regulator component respectively through a third switch. The generator test circuit further comprises an excitation branch, a voltage detection branch, a current detection branch and a load branch; the two ends of the excitation branch are respectively connected to the excitation end interface and the KL port of the voltage regulator assembly, and the excitation branch is connected in series with a first switch and a first ammeter; the two ends of the voltage detection branch are respectively connected to the output end interface and the ground end interface, and the voltage detection branch is connected in series with a first voltmeter; the two ends of the current detection branch are respectively connected to the output end and the MN port of the voltage regulator assembly, and the current detection branch is connected in series with a first diode and a second ammeter; the two ends of the load branch are respectively connected to the output end interface and the ground end interface, and the load branch is connected in series with a third resistor and a third ammeter.

[0006] Optionally, the generator test branch further includes a reset branch, and the reset branch includes an eighth button switch connected between the output end interface and the V port of the voltage regulator assembly.

[0007] Optionally, the generator test circuit further includes a residual magnetism detection branch, and the residual magnetism detection branch includes a second push button switch connected in parallel at both ends of the first diode.

[0008] Optionally, the controller test circuit also includes a balancing test branch, which includes a first power supply, a second resistor and a seventh switch; the seventh switch is a double-pole double-throw switch, the positive and negative poles of the first power supply are respectively connected to the two wiring ports of the power supply end of the seventh switch, the two contacts of one connection end of the seventh switch are respectively connected to the D port and E port of the voltage regulator component, and a fourth voltmeter is connected in parallel at both ends of the D port and the E port; the two contacts of the other connection end are respectively connected to the D port and the RS port of the voltage regulator component, and a sixth voltmeter is connected in parallel at both ends of the D port and the RS port; the second resistor is an adjustable resistor, connected between the positive or negative pole of the first power supply and the power supply end of the seventh switch.

[0009] Optionally, the balancing test branch also includes: a fifth switch, the fifth switch is connected between the adjustable resistor and the power terminal; and / or, a sixth switch, the sixth switch includes two connection states, the positive and negative poles of the first power supply are respectively connected to the first wiring port and the second wiring port of the power terminal of the seventh switch through one connection state, and the positive and negative poles of the first power supply are respectively connected to the second wiring port and the first wiring port of the power terminal of the seventh switch through another connection state.

[0010] Optionally, the controller test circuit also includes an overvoltage test branch, which includes a second power supply and a second diode. The negative pole of the second power supply is grounded, and the positive pole is connected to the MN port of the voltage regulator assembly through the second diode; a second voltmeter is connected in parallel to both ends of the second power supply and the second diode.

[0011] Optionally, the overvoltage test branch also includes a timing sub-branch connected to the overvoltage test branch through a second switch, a timing device is connected in series in the timing sub-branch, and the timing device is also connected to the AB port of the voltage regulator assembly through a ninth switch. The ninth switch includes a relay, the normally closed contact of the relay is connected to the timing device, and the induction coil of the relay is connected to the AB port.

[0012] Optionally, the generator test circuit also includes an open-loop verification branch, which includes a first resistor, a tenth switch and a fourth ammeter connected in series between the ground interface and the KL port; a fifth voltmeter is also connected in parallel at both ends of the open-loop verification branch.

[0013] The controller test circuit also includes an emergency protection branch, which includes a third power supply. The negative pole of the third power supply is grounded, and the positive pole is connected to the G port and C port of the voltage regulator assembly through the third button switch and the fifth button switch, respectively, and is connected to the H port and J port of the voltage regulator assembly through the seventh button switch, respectively. A fourth button switch is also connected between the seventh button switch and the H port.

[0014] Optionally, the traction mechanism includes a frequency converter, an AC motor and a gear speed change assembly connected in sequence; the two ends of the frequency converter are respectively connected to the power supply and the input end of the AC motor, the output end of the AC motor is connected to the input end of the gear speed change assembly, the output end of the gear speed change assembly can be connected to the click input end of the starter generator, and the torque detection assembly and the speed detection assembly are arranged at the output end of the gear speed change assembly.

[0015] The starter generator detection system of the embodiment of the present utility model can drag the starter generator to start and run through the dragging mechanism, and is convenient for detecting the starting performance and running power generation performance of the starter generator through the generator detection circuit, and detecting various functions of the controller used in conjunction with the starter generator through the controller detection circuit, so as to detect whether the various performances of the starter generator meet the standards, and detect whether the various functions of the controller are qualified, thereby facilitating fault analysis and component maintenance of the starter generator and the controller. The detection accuracy meets the test requirements, which helps to improve the detection and maintenance efficiency of the starter generator; and the starter generator detection system is simple in equipment and reliable in performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a schematic structural diagram of a starter generator detection system according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of the drag mechanism of the starter generator detection system according to an embodiment of the present utility model.

[0019] Reference numerals:

[0020] 1. Frequency converter; 2. Contactor; 3. AC motor; 4. Twelfth switch; A1, first ammeter; A2, second ammeter; A3, third ammeter; V1, first voltmeter; V2, second voltmeter; V3, third voltmeter; V4, fourth voltmeter; V5, fifth voltmeter; V6, sixth voltmeter; K1, first switch; K2, second switch; K3, third switch; K4, fourth switch; K5, fifth switch; K6, sixth switch; K7, seventh switch; K8, eighth switch; K9, ninth switch; AN1, first push-button switch; AN2, second push-button switch; AN3, third push-button switch; AN4, fourth push-button switch; AN5, fifth push-button switch; AN6, sixth push-button switch; AN7, seventh push-button switch; AN8, eighth push-button switch; BG1, first diode; BG2, second diode; R1, first resistor; R2, second resistor; RH, third resistor; Ω1, first ohmmeter; Ω2, second ohmmeter. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the basic embodiments disclosed below.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] The following is a detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings (same reference numerals in several drawings represent same elements) and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Reference Figure 1 A starter generator detection system according to an embodiment of the present invention includes a drag mechanism, a controller test circuit and a generator test circuit.

[0025] Among them, the output speed of the dragging mechanism is adjustable, and the output end of the dragging mechanism can be connected to the motor input end of the starter generator. The motor of the starter generator can be dragged to rotate through the dragging mechanism to meet the speed requirements of the starter generator during starting and operation; a torque detection component and a speed detection component are provided at the output end of the dragging mechanism to detect the output torque and speed of the dragging mechanism, which is equivalent to detecting the input torque and speed of the starter generator.

[0026] The controller test circuit includes a voltage regulator assembly and a controller interface. The controller interface is connected to the voltage regulator and can also be connected to the starter generator controller. Specifically, the controller can be connected to the controller test circuit, and the voltage regulator assembly can be used to test the voltage regulation, current holding, fault protection, and reset functions of the starter generator controller. As shown in the figure, the voltage regulator has multiple connection ports, including A, B, C, D, E, F, G, H, J, V, KL, TU, MN, and RS. These connection ports are used to connect to other electrical components and test circuits within the system. Of course, these ports can also be named according to the function of the connected components or circuits, or in a sequential order (e.g., port 1, port 2, ...port 14).

[0027] The generator test circuit includes an output interface, an excitation interface, and a ground interface. These interfaces can be connected to the output, excitation, and ground terminals of the starter generator, respectively. This allows the starter generator to be connected to the generator test circuit. Furthermore, the ground interface is also connected to ground. The output interface is also connected to the TU and F ports of the voltage regulator assembly via a third switch K3. The ground interface is also connected to the RS port (negative terminal) of the voltage regulator assembly. The resistance of the connection between the ground interface and the RS port is less than 5 mΩ.

[0028] The generator test circuit also includes an excitation branch, a voltage detection branch, a current detection branch, and a load branch. The excitation branch's two ends are connected to the excitation port and the KL port of the voltage regulator assembly, respectively. A first switch K1 and a first ammeter A1 are connected in series within the excitation branch. The first switch K1 controls the excitation branch's on / off state. Closing the first switch K1 connects the excitation branch, and the KL port of the voltage regulator assembly provides excitation current to the starter generator. The first ammeter A1 detects the starter generator's excitation current.

[0029] Two ends of the voltage detection branch are connected to the output terminal interface and the ground terminal interface respectively. A first voltmeter V1 is connected in series in the voltage detection branch. The first voltmeter V1 is used to detect the output voltage of the starter generator.

[0030] The two ends of the current detection branch are respectively connected to the output end and the MN port of the voltage regulator component. The current detection branch is connected in series with a first diode BG1 and a second ammeter A2. Here, the first diode BG1 can be used to adjust the current in the current detection branch, and the second ammeter A2 is used to detect the output current of the starter generator.

[0031] The two ends of the load branch are connected to the output interface and the ground interface, respectively. A third resistor RH and a third ammeter A3 are connected in series in the load branch. The third ammeter A3 is used to detect the load current in the load branch. In practical applications, an eighth switch K8 may also be connected in series in the load branch to control the on / off state of the load branch.

[0032] According to the starter generator detection system of the embodiment of the present invention, by connecting the starter generator to the generator test circuit and connecting the starter generator controller to the controller test circuit, the starter generator motor can be driven to rotate by controlling the starter generator to start the starter generator, thereby detecting the starting performance of the starter generator through the generator test current.

[0033] In an optional embodiment, as Figure 2As shown, the traction mechanism includes a frequency converter 1, an AC motor 3, and a gear speed change assembly (not shown in the figure) connected in sequence; the two ends of the frequency converter 1 are respectively connected to the AC power supply and the input end of the AC motor 3, the output end of the AC motor is connected to the input end of the gear speed change assembly, the output end of the gear speed change assembly can be connected to the click input end of the starter generator, and the torque detection assembly and the speed detection assembly are arranged at the output end of the gear speed change assembly.

[0034] Inverter 1 changes the frequency of the AC power supply. Adjusting the output frequency of inverter 1 changes the speed of AC motor 3, thereby adjusting the output speed of the drive mechanism. The gear speed change assembly can specifically employ a gear speed increaser, such as a gearbox with a large wheel and a small wheel, to increase the output speed of the drive mechanism to the operating speed of the starter generator (8,000-12,000 rpm), meeting the starter generator testing requirements.

[0035] In practical applications, a twelfth switch 4 may be connected between the inverter 1 and the AC power supply, and a contactor 2 may be connected between the inverter 1 and the AC motor 3 to facilitate control of the start and stop of the drive mechanism. Furthermore, the torque detection component and the speed detection component may be implemented using existing torque sensors and speed sensors, respectively.

[0036] When the starter generator's startup status is being detected, the drive mechanism is activated and, by adjusting the output frequency of the frequency converter 1, the output speed of the drive mechanism is adjusted to the starter generator's required starting speed based on the output speed detected by the speed detection assembly. Simultaneously, the first switch K1 is controlled to close, connecting the excitation branch and enabling the voltage regulator to provide excitation current to the starter generator. Furthermore, the third switch K3 is controlled to close, connecting the starter generator's output terminal to the TU and V ports of the voltage regulator assembly.

[0037] Furthermore, when detecting the running power generation state of the starter generator, the output speed of the traction mechanism can be adjusted to the power generation required speed of the starter generator by adjusting the output power of the inverter 1 .

[0038] The speed data detected by the speed detection component, the torque data detected by the torque detection component, the output voltage detected by the first voltmeter V1, the excitation current detected by the first ammeter A1, the output current detected by the second ammeter A2, and the load current detected by the third ammeter A3 are compared with the performance indicators of the starter generator in normal starting and normal operating states. This allows the determination of whether the starter generator is in a normal starting state or in a normal generating state, thereby determining whether the starter generator has a fault. Furthermore, the types of data that do not meet the indicators and the difference between the data indicators can be obtained, facilitating fault analysis and component repair. This allows for expedited repairs by adjusting or replacing the coil, rotor, bearing, or other components that may be causing the fault.

[0039] In the starter generator detection system of an embodiment of the present invention, the generator test circuit also includes a residual magnetism detection branch, which includes a second button switch AN2 connected in parallel at both ends of the first diode BG1. Before the starter generator starts running, the output end of the starter generator and the MN port of the voltage regulator assembly are connected by pressing the second button switch AN2, so that the residual current inside the starter generator is discharged, thereby avoiding affecting the accuracy of the starting performance detection of the starter generator.

[0040] Optionally, the generator test branch further includes a reset branch, comprising an eighth push-button switch AN8 connected between the output interface and the V port of the voltage regulator assembly. Pressing the eighth push-button switch AN8 connects the output of the starter generator to the V port, resetting the starter generator. Furthermore, the eighth push-button switch AN8 can be connected to the output interface via a third switch K3. That is, after the third switch K3 is closed, pressing the eighth push-button switch AN8 connects the reset branch.

[0041] In an optional embodiment, the controller test circuit further includes a balancing test branch, which includes a first power supply, a second resistor R2, and a seventh switch K7. The first power supply is a DC power supply; the seventh switch K7 is a double-pole, double-throw switch, with the positive and negative poles of the first power supply respectively connected to the two connection ports of the power terminal of the seventh switch K7; the second resistor R2 is an adjustable resistor connected between the positive or negative pole of the first power supply and the power terminal of the seventh switch K7.

[0042] A connection terminal of the seventh switch K7 ( Figure 1 The two contacts of the connection terminal 1 of K7 are connected to the D port and the E port of the voltage regulator component respectively. The two ends of the D port and the E port are connected in parallel with the fourth voltmeter V4; the other connection terminal ( Figure 1The two contacts of the connection terminal (2) of K7 are connected to the D and RS ports of the voltage regulator assembly, respectively. A sixth voltmeter V6 is connected in parallel across the D and RS ports. The D port of the voltage regulator assembly is also connected to the excitation terminal (D') via the fourth switch K4. The two connection terminals of the seventh switch K7 are used to establish two connection states for the equalization test branch. The fourth voltmeter V4 and the sixth voltmeter V6 are used to detect the equalization voltage in the two connection states, respectively.

[0043] Optionally, the balancing test branch further includes: a fifth switch K5 and / or a sixth switch K6. The fifth switch K5 is connected between the second resistor R2 and the power terminal and can be used to control the on / off of the balancing test branch. The sixth switch K6 includes two on states ( Figure 1 The double solid line of K6 represents connection state 1, and the double dashed line represents connection state 2). The positive and negative electrodes of the first power supply are connected to the first and second wiring ports of the power connection end of the seventh switch K7, respectively, in one connection state, and the positive and negative electrodes of the first power supply are connected to the second and first wiring ports, respectively, in another connection state. That is, the sixth switch K6 can be used to invert the polarity of the power supply that provides the balanced voltage to the voltage regulator component.

[0044] Furthermore, the balancing test branch also includes a conduction test sub-branch for testing the continuity of the balancing circuit within the voltage regulator assembly. The conduction test sub-branch includes a first ohmmeter Ω1 and a first push-button switch AN1; the two ends of the first ohmmeter Ω1 are connected to the D port and the E port, respectively, via the first push-button switch AN1. After pressing the first push-button switch AN1, the balancing test sub-branch is turned on. If the first ohmmeter displays a small resistance value, the balancing circuit within the voltage regulator assembly is turned on; if the first ohmmeter displays a very large resistance value, the balancing circuit within the voltage regulator assembly is turned off. Here, the first push-button switch AN1 can be a dual-channel push-button switch, with the two ends of the first ohmmeter Ω1 connected to the D port and the E port, respectively, via two channels.

[0045] In one optional embodiment, the generator test circuit further includes an open-loop verification branch comprising a first resistor R1 connected in series between the ground interface and the KL port, a tenth switch, and a fourth ammeter. The two ends of the open-loop verification branch are connected to the ground port and the KL port of the voltage regulator assembly, respectively. The fourth ammeter is used to detect the current output from the KL port, i.e., the excitation current that the voltage regulator assembly can provide.

[0046] To test the controller of the starter generator, the tenth switch can be turned on after the starter generator is shut down, and the open-loop verification test of the controller's current holding, voltage holding and other functions can be performed through the open-loop verification branch.

[0047] Optionally, a fifth voltmeter V5 is further connected in parallel to both ends of the open-loop verification branch for detecting the output voltage of the voltage regulator assembly, that is, the excitation voltage that can be provided by the voltage regulator assembly.

[0048] In practical applications, in order to simplify the system structure and reduce costs, the open-loop calibration branch can be combined with the excitation branch. Figure 1 As shown, the first switch K1 is a double-throw switch including two connection ports, and the first ammeter A1 is connected between the power connection terminal (fixed terminal) and the KL port of the first switch K1.

[0049] One of the connected ports of the first switch K1 ( Figure 1 Contact 1) of K1 is used to connect the excitation branch. The first ammeter A1 is connected to the excitation end through the connection port. When the connection port is connected, the voltage regulator assembly can provide excitation current for the starter generator.

[0050] The other connected port of the first switch K1 ( Figure 1 Contact 2 of K1 is used to connect the open-loop verification branch. Here, the first ammeter A1 functions as the fourth ammeter, meaning that the fourth ammeter's function is fulfilled by the first ammeter A1. Furthermore, the connection port functions as the tenth switch, fulfilling the tenth switch's function. When the connection port is connected, the excitation branch is disconnected, the starter generator is shut down, and open-loop verification testing of the voltage regulator assembly can be performed.

[0051] Furthermore, the controller test circuit also includes an overvoltage test branch, which includes a second power supply and a second diode BG2. The second power supply is a DC power supply with a negative terminal connected to ground and a positive terminal connected to the input terminal of the second diode BG2. The output terminal of the second diode BG2 is connected to the MN port of the voltage regulator assembly. A second voltmeter V2 is connected in parallel across the second power supply and the second diode BG2 (one terminal of the second voltmeter V2 is shown in the figure as being grounded, equivalent to being connected to the grounded negative terminal of the second power supply). The second voltmeter V2 is used to detect the voltage across the overvoltage test branch.

[0052] Optionally, the overvoltage test branch is further connected to the TU port and the V port of the voltage regulator assembly through the eleventh switch. In practical applications, the function of the eleventh switch can be realized by the third switch K3. Specifically, the third switch K3 may include two connection ports ( Figure 1The two contacts 1 and 2 of K3 in FIG3 are connected to the TU and V ports. One contact is connected to the output port, connecting the starter generator output to the TU and V ports. The other contact is connected to the output of the second diode BG2, connecting the overvoltage test branch to the TU and V ports. Here, this other contact acts as the eleventh switch. Furthermore, the output of the second diode BG2 can be connected to the MN port via a second ammeter A2. During an overvoltage test on the controller, the second ammeter A2 can be used to measure the current in the circuit connecting the overvoltage test branch to the MN port.

[0053] Furthermore, the overvoltage test branch also includes a timing sub-branch connected to the overvoltage test branch via a second switch K2. The second switch K2 can be a double-pole single-throw switch, with the two ends of one connecting pole of the double-pole single-throw switch connected in series in the overvoltage test branch, and the two ends of the other connecting pole connected in series in the timing sub-branch. A timing device is also connected in series to the timing sub-branch, and the timing device is also connected to ports A and B of the voltage regulator assembly via a ninth switch K9. The ninth switch K9 can include a relay, with the normally closed contacts of the relay connected to the timing device, and the induction coil of the relay connected to ports A and B. After the second switch K2 is closed, the overvoltage test branch is connected, and the timing device begins timing. When the overvoltage test is completed, ports A and B send a signal to the induction coil, which senses the signal, opens the normally closed contacts, and stops timing. The timing device may be a 401 electric stopwatch as shown in FIG1 , which is also connected to an AC power source (eg, 220V, 50Hz mains power) to obtain power.

[0054] The controller test circuit also includes a continuity test branch for detecting the continuity of components such as relays and contactors within the voltage regulator assembly. This continuity test branch includes a second ohmmeter Ω2 and a sixth pushbutton switch AN6. The sixth pushbutton switch AN6 has two channels. One end of the second ohmmeter Ω2 is connected to ports A and B of the voltage regulator assembly via one channel, and the other end of the second ohmmeter Ω2 is connected to port MN (port TU, port F) of the voltage regulator assembly via the other channel.

[0055] In one optional embodiment, the controller test circuit further includes an emergency protection branch, comprising a reset detection sub-branch, a relay control detection sub-branch, a remote trip detection sub-branch, and an emergency trip detection sub-branch. The emergency protection branch also includes a third power supply, the negative terminal of which is grounded, and the positive terminal of which is connected to each sub-branch. A third voltmeter V3 is connected in parallel across both ends of the third power supply (one end of the third voltmeter V3 is shown as grounded, equivalent to being connected to the grounded negative terminal of the third power supply) for detecting the voltage of the third power supply.

[0056] The reset detection sub-branch includes a third button switch AN3 connected between the positive pole of the third power supply and the G port of the voltage regulator assembly, which is used to detect the reset function of the controller; the relay control detection sub-branch includes a fifth button switch AN5 connected between the positive pole of the third power supply and the C port of the voltage regulator assembly, which is used to detect the relay disconnection control function of the controller; the remote trip detection sub-branch includes a seventh button switch AN7 connected between the positive pole of the third power supply and the J port of the voltage regulator assembly, which is used to detect the remote trip function of the controller; the emergency trip detection sub-branch is used to detect the emergency trip function of the controller, including a fourth button switch AN4 and a ninth button switch, the two ends of the fourth button switch AN4 are respectively connected to the H port of the voltage regulator assembly and one end of the ninth button switch, and the other end of the ninth button switch is grounded. In practical applications, such as Figure 1 As shown, the seventh push button switch AN7 can adopt a dual-channel push button switch, one channel is used to connect the remote tripping detection sub-branch, and the other channel is used to realize the function of the ninth push button switch.

[0057] In actual application scenarios, the starter generator detection system of the embodiment of the present invention also includes a heat dissipation device for dissipating heat from the starter generator, the load resistor and the AC motor 3. For example, the heat dissipation device may include a motor fan and a load fan.

[0058] Furthermore, the starter generator detection system may further include a control cabinet, in which the various components of the system are centrally located, thereby improving the integrity of the detection system structure. For example, a display panel may be provided on the control cabinet to display data detected by the aforementioned voltmeters, ammeters, and speed detection components, thereby facilitating the operator's observation of the detection data during the detection process. For another example, a control panel may be provided on the control cabinet, in which the control terminals of the aforementioned switches, pushbutton switches, and other components are located for ease of operation. The embodiments of the present invention do not limit the specific arrangement of the various components on the control cabinet.

[0059] Furthermore, the output terminal interface, excitation terminal interface, and ground terminal interface of the generator detection circuit can be connected to various types of starter generators. By providing a controller interface compatible with each type of controller (an additional dedicated connection line can be provided), the starter generator detection system of the embodiment of the present invention can be connected to different types of starter generators and controllers, thereby being applicable to the detection of various types of starter generators and controllers.

[0060] The starter generator detection system of the embodiment of the present utility model can drag the starter generator to start and run through the dragging mechanism, and is convenient for detecting the starting performance and running power generation performance of the starter generator through the generator detection circuit, and detecting various functions of the controller used in conjunction with the starter generator through the controller detection circuit, so as to detect whether the various performances of the starter generator meet the standards, and detect whether the various functions of the controller are qualified, thereby facilitating fault analysis and component maintenance of the starter generator and the controller. The detection accuracy meets the test requirements, which helps to improve the detection and maintenance efficiency of the starter generator; and the starter generator detection system is simple in equipment and reliable in performance.

[0061] It should be pointed out that, according to the needs of implementation, the various components described in the embodiments of the present invention can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the present invention.

[0062] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A starter generator detection system, characterized in that: The starter generator detection system includes: A drag mechanism, wherein the output speed of the drag mechanism is adjustable, the output end of the drag mechanism can be drivingly connected to the motor input end of the starter generator, and a torque detection component and a speed detection component are provided at the output end of the drag mechanism; a controller test circuit, the controller test circuit comprising a voltage regulator assembly and a controller interface connected to the voltage regulator assembly, the controller interface being connectable to a controller of the starter generator; A generator test circuit, comprising an output interface, an excitation interface, and a ground interface, each of which is connectable to the output, excitation, and ground terminals of the starter generator, respectively; the output interface is further connected to the TU and F ports of the voltage regulator assembly, respectively, via a third switch; and the ground interface is further connected to the RS port of the voltage regulator assembly; In addition, the generator test circuit also includes an excitation branch, a voltage detection branch, a current detection branch and a load branch; the two ends of the excitation branch are respectively connected to the excitation end interface and the KL port of the voltage regulator component, and the excitation branch is connected in series with a first switch and a first ammeter; the two ends of the voltage detection branch are respectively connected to the output end interface and the ground end interface, and the voltage detection branch is connected in series with a first voltmeter; the two ends of the current detection branch are respectively connected to the output end and the MN port of the voltage regulator component, and the current detection branch is connected in series with a first diode and a second ammeter; the two ends of the load branch are respectively connected to the output end interface and the ground end interface, and the load branch is connected in series with a third resistor and a third ammeter.

2. The starter generator detection system according to claim 1, characterized in that: The generator test branch further includes a reset branch, and the reset branch includes an eighth button switch connected between the output end interface and the V port of the voltage regulator assembly.

3. The starter generator detection system according to claim 1, characterized in that: The generator test circuit further includes a residual magnetism detection branch, which includes a second push button switch connected in parallel at both ends of the first diode.

4. The starter generator detection system according to claim 1, characterized in that: The controller test circuit further includes a balanced test branch, wherein the balanced test branch includes a first power supply, a second resistor and a seventh switch; The seventh switch is a double-pole double-throw switch, wherein the positive and negative electrodes of the first power supply are respectively connected to the two connection ports of the power connection end of the seventh switch, the two contacts of one connection end of the seventh switch are respectively connected to the D port and the E port of the voltage regulator assembly, and a fourth voltmeter is connected in parallel across the D port and the E port; the two contacts of the other connection end of the seventh switch are respectively connected to the D port and the RS port of the voltage regulator assembly, and a sixth voltmeter is connected in parallel across the D port and the RS port; The second resistor is an adjustable resistor connected between the positive electrode or the negative electrode of the first power supply and the power terminal of the seventh switch.

5. The starter generator detection system according to claim 4, characterized in that: The equalization test branch further includes: a fifth switch connected between the adjustable resistor and the power terminal; and / or, a sixth switch, wherein the sixth switch includes two on-states, wherein the positive and negative electrodes of the first power supply are connected to the first and second wiring ports of the power receiving end of the seventh switch, respectively, in one on-state, and the positive and negative electrodes of the first power supply are connected to the second and first wiring ports of the power receiving end of the seventh switch, respectively, in the other on-state.

6. The starter generator detection system according to claim 1, characterized in that: The controller test circuit also includes an overvoltage test branch, which includes a second power supply and a second diode. The negative pole of the second power supply is grounded, and the positive pole is connected to the MN port of the voltage regulator component through the second diode; a second voltmeter is connected in parallel to both ends of the second power supply and the second diode.

7. The starter generator detection system according to claim 6, characterized in that: The overvoltage test branch also includes a timing sub-branch connected to the overvoltage test branch through a second switch. A timing device is connected in series in the timing sub-branch. The timing device is also connected to the AB port of the voltage regulator assembly through a ninth switch. The ninth switch includes a relay. The normally closed contact of the relay is connected to the timing device, and the induction coil of the relay is connected to the AB port.

8. The starter generator detection system according to claim 1, characterized in that: The generator test circuit also includes an open-loop verification branch, which includes a first resistor, a tenth switch and a fourth ammeter connected in series between the ground terminal interface and the KL port; a fifth voltmeter is also connected in parallel at both ends of the open-loop verification branch.

9. The starter generator detection system according to claim 1, characterized in that: The controller test circuit also includes an emergency protection branch, which includes a third power supply. The negative pole of the third power supply is grounded, and the positive pole is connected to the G port and C port of the voltage regulator assembly respectively through a third button switch and a fifth button switch, and is connected to the H port and J port of the voltage regulator assembly respectively through a seventh button switch. A fourth button switch is also connected between the seventh button switch and the H port.

10. The starter generator detection system according to any one of claims 1 to 9, characterized in that: The drag mechanism includes a frequency converter, an AC motor and a gear speed change assembly connected in sequence; The two ends of the frequency converter are respectively connected to the power supply and the input end of the AC motor, the output end of the AC motor is connected to the input end of the gear transmission assembly, the output end of the gear transmission assembly can be transmission-connected to the click input end of the starter generator, and the torque detection assembly and the speed detection assembly are arranged at the output end of the gear transmission assembly.

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