Test system for simulating two-wire Hall signals of motor

Abstract

The utility model discloses a test system for simulating two-wire Hall signals of a motor, relates to the field of motor equipment, solves the test problem of a motor Hall controller in the absence of a real motor, simulates a Hall circuit in the motor by using the combination of an upper computer, a VT system board card, a transistor and a resistor, and further realizes the construction of a whole test environment. The working state of the motor is simulated by adjusting output signals of the VT system, and signal feedback monitoring is achieved through the VT system. A real motor is replaced by building of a circuit, verification of a product design circuit can be carried out in advance, a switching signal is output through a VT system, the function of a Hall sensor is replaced, the integration level is high, a VT function can be directly called to set the frequency and the duty ratio of an output Hall signal, meanwhile, the frequency and the duty ratio of the output signal can be monitored, and the reliability of the product design circuit is improved. The equipment cost is reduced, and the test efficiency is improved.

Description

A test system for simulating two-wire Hall signals of an electric motor Technical Field

[0001] This utility model relates to the field of motor equipment, and in particular to a test system for simulating two-wire Hall signals of a motor. Background Technology

[0002] In the development of motor-related control systems, the rationality and reliability of the hardware circuitry directly affect product performance and development progress. However, customers typically only provide actual motor prototypes midway through the project, and in limited quantities, making it difficult to cover all testing phases (such as software testing, hardware testing, and system testing). Due to the lag in hardware verification, if the circuit design in the early stages has defects (such as insufficient drive capability, signal interference, or poor heat dissipation), later changes will lead to extended project cycles, increased costs, and even affect product delivery.

[0003] Traditional development models rely on simulation or theoretical calculations to verify hardware designs. However, due to the complexity of actual operating conditions such as motor load characteristics, dynamic response, and electromagnetic compatibility (EMC) interference, simulation results may deviate significantly from actual tests.

[0004] Therefore, how to solve the problem of control system testing when a real motor is missing is a technical problem that urgently needs to be solved by people in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a test system for simulating two-wire Hall signals of a motor, thereby solving the testing problem of motor Hall controllers when real motors are missing.

[0006] To solve the above-mentioned technical problems, this utility model provides a test system for simulating two-wire Hall signals of a motor, comprising:

[0007] The system includes a host computer, a VT system, and an analog Hall effect circuit module; the analog Hall effect circuit module includes: a first resistor, a second resistor, a transistor, and a power resistor.

[0008] The host computer is connected to the Hall controller under test and the VT system; the Hall controller under test is connected to the power supply; the VT system is connected to the analog Hall circuit module; the analog Hall circuit module is connected to the Hall controller under test.

[0009] The control port of the VT system for outputting the Hall signal of the module is connected to the control terminal of the transistor; the first terminal of the transistor is connected to the first terminal of the first resistor; the second terminal of the first resistor and the second terminal of the second resistor are connected to the Hall power supply port of the Hall controller under test; the second terminal of the transistor is connected to the first terminal of the second resistor, the sampling port of the VT system, and the Hall signal line of the Hall controller under test; the first terminal of the power resistor is connected to the motor positive output port of the Hall controller under test, and the second terminal of the power resistor is connected to the motor reverse output port of the Hall controller under test.

[0010] As an optional solution, in the above-mentioned test system for two-wire Hall signals of a simulated motor, the number of simulated Hall circuit modules is multiple; the digital input / output board of the VT system includes multiple signal channels;

[0011] The multiple PWM output channel ports of the digital input / output board of the VT system are respectively connected to the control terminals of the transistors of the analog Hall circuit module;

[0012] The multiple sampling channel ports of the digital input / output board of the VT system are respectively connected to the first end of the second resistor of the analog Hall circuit module;

[0013] Each of the analog Hall circuit modules is connected to one Hall controller under test.

[0014] As an optional solution, in the above-mentioned test system for two-wire Hall signals of a simulated motor, the digital input / output board of the VT system is the VT2848 board;

[0015] Channels 1-16 of the VT2848 board are used as sampling channels to detect whether the output parameters are correct and to support high-level output; channels 33-48 of the VT2848 board are used as PWM output channels to adjust the frequency and duty cycle of the output analog Hall signal.

[0016] As an optional solution, the above-mentioned test system for simulating two-wire Hall signals of a motor also includes: a communication module for transmitting CAN messages between the host computer and the Hall controller under test;

[0017] The communication module is connected to the host computer via a universal serial bus, and the communication module is connected to the Hall controller under test via a twisted pair cable.

[0018] As an optional solution, in the above-mentioned test system for simulating two-wire Hall signals of a motor, the power supply is the VT7001 DC power supply board of the VT system.

[0019] As an alternative, in the above-mentioned test system for simulating two-wire Hall signals of a motor, the power resistor is an adjustable resistor.

[0020] As an optional solution, in the above-mentioned test system for simulating two-wire Hall signals of a motor, the transistor is an NMOS transistor;

[0021] The control port of the VT system for outputting the Hall signal of the module is connected to the gate of the NMOS transistor; the drain of the NMOS transistor is connected to the first end of the first resistor; the source of the NMOS transistor is connected to the first end of the second resistor, the sampling port of the VT system, and the Hall signal line of the Hall controller under test.

[0022] As an optional solution, the above-mentioned test system for simulating two-wire Hall signals of a motor also includes a channel switch;

[0023] Each signal channel of the digital input / output board is connected to one of the channel switches.

[0024] As an optional solution, in the above-mentioned test system for two-wire Hall signals of a simulated motor, the host computer further includes: multiple display modules for receiving and displaying data information of each signal channel of the VT system.

[0025] As an optional solution, in the above-mentioned test system for simulating two-wire Hall signals of a motor, the host computer also includes a human-machine interface for controlling the functional outputs of all VT boards in the VT system.

[0026] This invention provides a test system for simulating two-wire Hall signals in a motor. It utilizes a combination of a host computer, a VT system board, transistors, and resistors to simulate the Hall circuit inside the motor, thereby establishing the entire test environment. The system simulates the motor's operating state by adjusting the output signal of the VT system and achieves signal feedback monitoring through the VT system. By replacing the actual motor with a built-in circuit, the verification of the product design circuit can be advanced. The VT system outputs a switching signal, replacing the function of the Hall sensor, and has a high degree of integration. The frequency and duty cycle of the output Hall signal can be directly set by calling VT functions, and the frequency and duty cycle of the output signal can be monitored simultaneously, reducing equipment costs and improving testing efficiency. Attached Figure Description

[0027] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of a test system for simulating two-wire Hall signals of a motor, provided in an embodiment of this application. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The core of this invention is to provide a test system that simulates two-wire Hall signals of a motor.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] The testing system described in this application is primarily applicable to the early stages of motor development, when actual motors are not yet available or the quantity is insufficient to support all testing phases (such as software testing, hardware testing, and system testing). This system effectively tests Hall effect circuits and their controllers. It simulates operating conditions as closely as possible to real-world scenarios, thereby verifying the rationality of the Hall effect circuit design, improving testing efficiency, and reducing development risks.

[0033] This application provides a test system for simulating two-wire Hall signals of a motor, as shown in Figure 1, including:

[0034] Host computer 11, VT system 12, analog Hall circuit module 13; analog Hall circuit module 13 includes: a first resistor, a second resistor, a transistor, and a power resistor;

[0035] The host computer 11 is connected to the Hall controller under test and the VT system 12; the Hall controller under test is connected to the power supply; the VT system 12 is connected to the analog Hall circuit module 13; the analog Hall circuit module 13 is connected to the Hall controller under test.

[0036] The control port of the VT system 12 for outputting the Hall signal of the module is connected to the control terminal of the transistor; the first terminal of the transistor is connected to the first terminal of the first resistor; the second terminal of the first resistor and the second terminal of the second resistor are connected to the Hall power supply port of the Hall controller under test; the second terminal of the transistor is connected to the first terminal of the second resistor, the sampling port of the VT system 12, and the Hall signal line of the Hall controller under test; the first terminal of the power resistor is connected to the positive output port of the motor of the Hall controller under test 14, and the second terminal of the power resistor is connected to the reverse output port of the motor of the Hall controller under test 14.

[0037] The host computer 11 is typically a computer running specialized testing software, such as a bus development environment (CANoe). It is used to communicate with the Hall controller under test 14, configure the VT system 12, monitor the testing process, and collect and analyze data.

[0038] A virtualization technology (VT) system 12 typically includes a power supply board (providing DC power) and input / output boards. It provides the DC power required for testing, outputs the frequency and duty cycle of an analog Hall signal, and detects whether the output parameters are correct. The output port of the VT system 12 is connected to the control terminal of a transistor to control its on / off state; the sampling port of the VT system 12 is connected to the second terminal of the transistor to detect the output signal.

[0039] The first resistor in the simulated Hall effect circuit module 13 simulates a small-current resistor in the Hall effect circuit, generating a small current when the output of the VT system 12 is low. The second resistor simulates a large-current resistor in the Hall effect circuit, generating a larger current when the output of the VT system 12 is high. Specifically, the first resistor is smaller than the second resistor.

[0040] The transistor acts as a switch, controlling the flow of current to simulate the high and low states of a Hall effect signal. The power resistor simulates the motor load and can be selected according to customer requirements. A current carrying capacity greater than 30mA is sufficient, but to ensure functionality, a capacity of at least 50mA is preferred. The specific transistor is an N-type bipolar transistor or an N-type metal-oxide-semiconductor (NMOS) transistor.

[0041] When the transistor is an NMOS transistor, the control port of the VT system 12 for outputting the Hall signal of the module is connected to the gate of the NMOS transistor; the drain of the NMOS transistor is connected to the first end of the first resistor; the source of the NMOS transistor is connected to the first end of the second resistor, the sampling port of the VT system 12, and the Hall signal line of the Hall controller 14 under test.

[0042] When the transistor is an N-type transistor, the control port of the VT system 12 for outputting the Hall signal of the module is connected to the base of the N-type transistor; the collector of the N-type transistor is connected to the first end of the first resistor; the emitter of the N-type transistor is connected to the first end of the second resistor, the sampling port of the VT system 12, and the Hall signal line of the Hall controller 14 under test.

[0043] The Hall effect controller 14 under test is connected to the power supply, the host computer 11, and the analog Hall effect circuit module 13. It receives and processes analog Hall effect signals and monitors its working status through the host computer 11.

[0044] The connection between the host computer 11 and the Hall controller under test 14 is mainly through communication interfaces, such as Controller Area Network (CAN) or Local Interconnect Network (LIN), to realize data exchange and command transmission.

[0045] Normal operating state: The VT system 12 outputs a pulse width modulation (PWM) signal to control the switching on and off of the transistor, thereby simulating the high and low states of the Hall signal. The host computer 11 monitors the feedback of the Hall controller 14 under test to ensure its normal operation.

[0046] Fault detection status: If the signal is interrupted or short-circuited to the power supply, VT2848 and host computer 11 work together to inject and monitor faults, and verify the fault handling capability of the Hall controller 14 under test.

[0047] Power resistors can be used to sample common non-Hall motors, and their performance during the drive process is closer to the real working conditions, but it is necessary to find a motor that matches the required drive current.

[0048] For example, when the VT2848 input / output board of the VT system 12 outputs a low value, the transistor is in the off state. At this time, the output current of the Hall signal terminal in the circuit flows through the second resistor, and the current is small, so the voltage division at the product end is also low. When the VT2848 board outputs a high value, the transistor is in the saturation state, and the emitter and collector are conducting. At this time, the output current of the Hall signal terminal in the circuit flows through the first resistor, and the current is large, so the voltage division at the product end is also high. By controlling the high and low outputs of the VT2848 board, the high and low states of the Hall signal terminal are switched, thereby simulating the Hall signal input to the product end.

[0049] It can verify the working status of the product under fault conditions. For example, when channel 33 of the VT2848 board stops outputting PWM, channel 1 of the VT2848 board is used as a digital input to detect that the Hall signal is low at this time. At the same time, the host computer 11 monitors whether the product's message feedback is consistent with expectations.

[0050] When channel 33 of the VT2848 board outputs PWM normally, channel 1 of the VT2848 board acts as a digital output, short-circuiting the Hall signal line to the power supply. At the same time, the host computer 11 monitors whether the product's message feedback is consistent with expectations.

[0051] The test system for simulating two-wire Hall signals of a motor, provided in this application embodiment, utilizes a combination of a host computer 11, a VT system 12 board, transistors, and resistors to simulate the Hall circuit inside the motor, thereby establishing the entire test environment. The motor's operating state is simulated by adjusting the output signal of the VT system 12, and signal feedback monitoring is achieved through the VT system 12. By replacing the actual motor with a circuit, the verification of the product design circuit can be advanced. The VT system 12 outputs a switching signal, replacing the function of a Hall sensor, and has a high degree of integration. The VT function can be directly called to set the frequency and duty cycle of the output Hall signal, while simultaneously monitoring the frequency and duty cycle of the output signal, reducing equipment costs and improving test efficiency.

[0052] Furthermore, in a specific embodiment, as shown in FIG1, there are multiple analog Hall circuit modules 13; the digital input / output board of the VT system 12 includes multiple signal channels;

[0053] The multiple PWM output channel ports of the digital input / output board of the VT system 12 are respectively connected to the control terminals of the transistors of the analog Hall circuit module 13;

[0054] The multiple sampling channel ports of the digital input / output board of the VT system 12 are respectively connected to the first end of the second resistor of the analog Hall circuit module 13;

[0055] Each analog Hall circuit module 13 is connected to a Hall controller 14 under test.

[0056] Each PWM output channel port of the VT system 12 is connected to the control terminal of a transistor in an analog Hall circuit module 13 to control its on / off state to simulate a Hall signal. Each sampling channel port of the VT system 12 is connected to the first terminal of the second resistor of the analog Hall circuit module 13, i.e., the second terminal of the transistor, to detect the correctness of the output signal.

[0057] The first terminal of the second resistor (which is also the second terminal of the transistor) of each analog Hall circuit module 13 is connected to the Hall signal line of the corresponding Hall controller 14 under test. The second terminals of the first and second resistors of each analog Hall circuit module 13 are connected to the Hall power supply port of the corresponding Hall controller 14 under test.

[0058] Simulated normal working state: The VT system 12 outputs simulated Hall signals through the PWM output channel to control the switching of transistors. The Hall controller under test 14 receives and processes these signals, and the host computer 11 monitors its working state.

[0059] Simulated fault detection status: The VT system 12 can simulate fault conditions such as signal interruption or short circuit to power supply. The host computer 11 monitors the feedback of the Hall controller 14 under test to verify its fault handling capability.

[0060] In Figure 1, there are multiple Hall controllers under test. Multiple Hall controllers under test 14 can be installed on a preset connection device. The preset device has reserved ports for each of the multiple Hall controllers under test 14 for external connection.

[0061] In the batch testing phase of the motor production line, the testing method of this embodiment is used to simultaneously test multiple Hall circuits and their controllers. By setting multiple PWM output channels of the VT system 12 to output PWM signals with different frequencies and duty cycles, the operation of the motor under different working conditions is simulated; the feedback of all Hall controllers 14 under test is monitored by the host computer 11 to ensure that they can correctly identify and process their respective simulated Hall signals.

[0062] Furthermore, in one specific embodiment, the digital input / output board of the VT system 12 is a VT2848 board;

[0063] Channels 1-16 of the VT2848 board are used as sampling channels to detect whether the output parameters are correct and to support high-level output; channels 33-48 of the VT2848 board are used as PWM output channels to adjust the frequency and duty cycle of the output analog Hall signal.

[0064] By utilizing the high channel count of the VT2848 board, this solution can simultaneously simulate and test up to 16 Hall signals, significantly improving testing efficiency.

[0065] The VT2848 board is a digital input / output board with 48 channels. In this embodiment, channels 1-16 serve as sampling channels, used to detect whether output parameters (such as frequency and duty cycle) are correct, and support outputting high-level signals for fault detection. Channels 33-48 serve as PWM output channels, which can adjust the frequency and duty cycle of the output analog Hall signal.

[0066] The PWM output channel controls the switching on and off of the transistor, simulating a Hall signal; the sampling channel detects the voltage level of the transistor's collector to verify the correctness of the output signal.

[0067] Fault detection is achieved by simulating Hall signal interruption or abnormal states through methods such as stopping PWM output or short-circuiting the signal line to the power supply. The sampling channel and the host computer 11 jointly monitor the feedback of the Hall controller 14 under test to verify its fault handling capability.

[0068] Furthermore, in one specific embodiment, it also includes: a communication module for transmitting CAN messages between the host computer 11 and the Hall controller under test 14;

[0069] The communication module is connected to the host computer 11 via a universal serial bus, and the communication module is connected to the Hall controller under test 14 via a twisted pair cable.

[0070] This embodiment introduces a communication module to achieve efficient and stable data transmission between the host computer 11 and the Hall controller under test 14, further improving the automation and accuracy of the test.

[0071] In this embodiment, the communication module is a hardware device specifically designed for transmitting CAN messages. Specifically, the communication module is a VN1640A.

[0072] The communication module is responsible for data communication between the host computer 11 and the Hall controller under test 14, ensuring the accurate and timely transmission of test commands and feedback information. It connects to the host computer 11 via a universal serial bus (USB) and to the Hall controller under test 14 via a twisted pair cable to meet the communication needs between different devices.

[0073] The main function of VN1640A is to provide CAN / LIN communication and control license for VT system 12. Host computer 11 communicates with the product via VN1640A and provides control license for VT system 12. After opening the CANoe project on host computer 11, the control power supply VT7001 can output a normal 12V voltage, enabling the Hall controller under test 14 to operate normally.

[0074] In certain situations, if the Hall controller under test 14 supports other types of communication protocols, a corresponding communication module can be selected for replacement. In scenarios requiring longer-distance transmission or higher anti-interference capabilities, fiber optic cables or other alternatives can be selected for communication instead of twisted-pair cables.

[0075] Furthermore, in one specific embodiment, the power supply is the VT7001 DC power supply board of the VT system 12.

[0076] Key features of the VT7001 DC power supply board: High current carrying capacity: The VT7001A DC power supply board has a single-channel continuous current carrying capacity of up to 70A, ensuring a stable and sufficient power supply to the Hall controller under test (HDC) 14 during testing. Flexible control functions: Through relay control, the VT7001 DC power supply board can precisely control power on / off, short circuit, and power supply mode. This flexibility allows the test method to simulate various operating conditions, thereby more comprehensively verifying the performance of the HDC 14 under test. Hard synchronization feature: The power supply status and bus signal are highly hard synchronized, and status data can be synchronously transmitted to the CANoe. This feature ensures the synchronization of power supply status and data signals during testing, improving the accuracy and reliability of the test.

[0077] The VT7001A DC power supply board boasts a single-channel continuous current carrying capacity of up to 70A, ensuring a stable and ample power supply to the Hall controller under test (HDC) 14 during testing. Through relay control, the VT7001 DC power supply board enables precise control of power on / off, short circuit, and power supply modes. This flexibility allows the testing method to simulate various operating conditions, thus more comprehensively verifying the performance of the HDC 14. The power status is highly hard synchronized with the bus signals, and status data can be synchronously transmitted to the CANoe. This feature ensures the synchronization of power status and data signals during testing, improving the accuracy and reliability of the test.

[0078] In the test method for simulating two-wire Hall signals of a motor based on the VT system 12, the VT7001 DC power supply board, along with the VT2848 board, transistors, resistors, and other components, constitute the test environment. During the test, the VT7001 DC power supply board provides a stable power supply to the Hall controller under test 14, while the VT2848 board controls the switching of the transistors to simulate the normal output of the Hall signal. Scripts can be written using CANoe to configure and monitor the parameters of the VT7001 DC power supply board and the VT2848 board, achieving an automated test process.

[0079] Furthermore, in one specific embodiment, the power resistor is an adjustable resistor.

[0080] This embodiment improves upon the existing VT2848 board solution by adopting an adjustable resistor design to achieve more precise current simulation control. The power resistor's resistance is adjustable, making it suitable for test scenarios requiring accurate simulation of the characteristics of different Hall sensor models. When testing different types of motors or Hall sensors, the resistance value of the power resistor can be adjusted to simulate real current changes, improving the accuracy and flexibility of the test.

[0081] In one specific embodiment, the host computer 11 further includes: a plurality of display modules for receiving and displaying data information of each signal channel of the VT system 12.

[0082] Specifically, the display module adopts a distributed display panel design, with each panel corresponding to a specific VT board channel (such as the PWM output channel of VT2848 or the power monitoring channel of VT7001). It supports three display modes: real-time waveform display (Hall signal analog curve), digital status indication (input / output channel on / off), and parameter table (power supply voltage / current value).

[0083] The synchronization of data refresh across multiple screens can be ensured through timestamp alignment technology. The failure of a single display module will not affect the operation of other modules, and hot-swappable replacement is supported.

[0084] This embodiment significantly improves the flexibility and accuracy of the two-wire Hall signal testing method for the VT system 12-simulated motor by introducing an adjustable power resistor and a distributed display module. The adjustable power resistor design allows for a wider range of testing scenarios and can accurately simulate the characteristics of different types of Hall sensors; the distributed display module provides an intuitive and synchronous monitoring method, offering strong support for fault diagnosis and data analysis.

[0085] In testing, automated detection can be achieved by pre-setting automatic test scripts. This greatly reduces manual intervention and improves testing efficiency and accuracy. However, in another specific embodiment, the host computer 11 also includes a human-machine interface for controlling the functional outputs of all VT boards in the VT system 12.

[0086] The host computer 11 also includes a human-machine interface for controlling the function outputs of all VT boards in the VT system 12. This interface establishes bidirectional communication with the VT system 12 via Ethernet, enabling visualized centralized management and control of the hardware resources of the VT system 12.

[0087] The human-machine interface establishes bidirectional communication with the VT system 12 via Ethernet. Through deep integration with the CANoe test platform, the human-machine interface realizes visualized centralized management and control of the hardware resources of the VT system 12.

[0088] It can display the real-time operating status of all VT boards in the VT system 12, such as power output and signal status. Users can directly configure and adjust the parameters of the VT boards through the interface, such as the output frequency and duty cycle of the VT2848 board. It provides test process control functions such as start, pause, and stop, allowing users to adjust the test progress as needed. Test results are displayed in the form of charts and curves to help users intuitively understand the performance of the Hall controller 14 under test.

[0089] The human-computer interface, through deep integration with the CANoe testing platform, further enhances its functionality and ease of use. CANoe, as a professional network development and testing tool, provides robust support for the testing of VT System 12.

[0090] The above provides a detailed description of the analog motor two-wire Hall signal testing system provided by this utility model. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0091] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A test system for simulating two-wire Hall signals of a motor, characterized in that, include: The system comprises a host computer (11), a VT system (12), and an analog Hall circuit module (13). The analog Hall circuit module (13) includes a first resistor, a second resistor, a transistor, and a power resistor. The host computer (11) is connected to the Hall controller under test (14) and the VT system (12). The Hall controller under test (14) is connected to a power supply. The control port of the VT system (12) for outputting the Hall signal of the module is connected to the control terminal of the transistor. The first terminal of the transistor is connected to the first terminal of the first resistor. The second terminal of the first resistor and the second terminal of the second resistor are connected to the Hall power supply port of the Hall controller under test (14). The second terminal of the transistor is connected to the first terminal of the second resistor, the sampling port of the VT system (12), and the Hall signal line of the Hall controller under test (14). The first terminal of the power resistor is connected to the motor forward output port of the Hall controller under test (14), and the second terminal of the power resistor is connected to the motor reverse output port of the Hall controller under test (14).

2. The test system for simulating two-wire Hall signals of a motor according to claim 1, characterized in that, The number of analog Hall circuit modules (13) is multiple; the digital input / output board of the VT system (12) includes multiple signal channels; the multiple PWM output channel ports of the digital input / output board of the VT system (12) are respectively connected to the control terminal of the transistor of the analog Hall circuit module (13); the multiple sampling channel ports of the digital input / output board of the VT system (12) are respectively connected to the first terminal of the second resistor of the analog Hall circuit module (13); each analog Hall circuit module (13) is connected to one Hall controller (14) under test.

3. The test system for simulating two-wire Hall signals of a motor according to claim 2, characterized in that, The digital input / output board of the VT system (12) is the VT2848 board; channels 1-16 of the VT2848 board are used as sampling channels to detect whether the output parameters are correct and to support high-level output; channels 33-48 of the VT2848 board are used as PWM output channels to adjust the frequency and duty cycle of the output analog Hall signal.

4. The test system for simulating two-wire Hall signals of a motor according to claim 1, characterized in that, Also includes: A communication module for transmitting CAN messages between the host computer (11) and the Hall controller under test (14); The communication module is connected to the host computer (11) via a universal serial bus, and the communication module is connected to the Hall controller under test (14) via a twisted pair cable.

5. The test system for simulating two-wire Hall signals of a motor according to claim 1, characterized in that, The power supply is the VT7001 DC power supply board of the VT system (12).

6. The test system for simulating two-wire Hall signals of a motor according to claim 1, characterized in that, The power resistor is an adjustable resistor.

7. The test system for simulating two-wire Hall signals of a motor according to claim 1, characterized in that, The transistor is an NMOS transistor; the control port of the VT system (12) for outputting the Hall signal of the module is connected to the gate of the NMOS transistor; the drain of the NMOS transistor is connected to the first end of the first resistor; the source of the NMOS transistor is connected to the first end of the second resistor, the sampling port of the VT system (12), and the Hall signal line of the Hall controller under test (14).

8. The test system for simulating two-wire Hall signals of a motor according to claim 2, characterized in that, It also includes channel switches; each signal channel of the digital input / output board is connected to one of the channel switches.

9. The test system for simulating two-wire Hall signals of a motor according to claim 3, characterized in that, The host computer (11) also includes multiple display modules for receiving and displaying data information of each signal channel of the VT system (12).

10. The test system for two-wire Hall signals of an analog motor according to any one of claims 1 to 9, characterized in that, The host computer (11) also includes a human-machine interface for controlling the function output of all VT boards in the VT system (12).

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