Electric side window control system of heavy-load locomotive cab

Abstract

The invention relates to the technical field of heavy-load locomotive window control, in particular to a heavy-load locomotive cab electric side window control system. Comprising a side window control unit, and the side window control unit is composed of a power supply system, a servo motor driver and a core board provided with a communication expansion board. The core board is an integral logic control module, the core board is connected with a servo motor driver and is connected with and controls a motor through the servo motor driver, and the motor comprises a left side window motor and a right side window motor; the core board is respectively connected with a key control module and a fault display module in a driver console; and the core board is powered by external DC110V through the power supply system. The beneficial effects of the invention are that the system is highly integrated, integrates a plurality of modules into a whole, and employs a one-to-two design; the left window and the right window of the cab can be controlled and driven at the same time; the existing electric side window control system is optimized and upgraded, and the original multi-module distribution design is integrated, so that the whole construction is simpler, and the operation is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of heavy-load locomotive window control, in particular to an electric side window control system for a heavy-load locomotive driver's cab. Background Art

[0002] With the popularity of cars, people pay more and more attention to the safety of cars. In the window control system, the anti-pinch function of the car electric window has become a necessary requirement of the system. In this way, when the window rises and encounters an obstacle (such as a head, hand, etc.), it can automatically move back to the bottom, thereby effectively avoiding accidents. The window anti-pinch function is a very humanized design for the safety performance of the car. Generally speaking, during the driver's operation, if the window is manually controlled to rise and fall, it will distract the driver, and it is very likely that a safety accident will occur when adjusting the window. Therefore, a control system with an automatic window lifting function should also be used during motorcycle driving.

[0003] Most of the existing heavy-duty locomotive cab electric side window control systems adopt a distributed design. Taking the original distributed design of the Shenhua locomotive cab electric side window control system as an example, there are still the following problems: the multi-module distributed design leads to a bloated control system structure, which leads to unstable operation of the locomotive cab electric side windows; at the same time, the control links and operating steps are complicated, and it is impossible to control the left and right windows of the cab at the same time. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the multi-module distributed design leads to a bloated control system structure and complicated control links and operation steps.

[0005] To solve the above problems, the technical solution adopted by the present invention is: it includes a side window control unit, which is composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to the servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through the power supply system.

[0006] As a further improvement of the present invention: the power supply system includes a DC110V-DC24V conversion circuit, a DC24V-DC5V conversion circuit and a DC5V-DC3.3V conversion circuit.

[0007] As a further improvement of the present invention: the DC110V-DC24V is a main circuit for converting the external DC110V input of the whole vehicle, and the output DC24V is used to drive the servo motor and power the motor; the front end of the DC110V-DC24V circuit is provided with a fuse, an anti-reverse diode, a support capacitor, EMI, ECM and a lightning surge protection circuit.

[0008] As a further improvement of the present invention: the DC24V-DC5V conversion circuit provides output for 5V power supply of other driver chips in the system and external encoder.

[0009] As a further improvement of the present invention: the DC5V-DC3.3V conversion circuit provides a power supply system for the MCU of the core board, and provides a 3.3V reference voltage and a reference base voltage for analog quantity sampling.

[0010] As a further improvement of the present invention: the DI / DO drive of the side window control unit adopts a parallel port design and uses optical coupling isolation; and adopts ferroelectric FM25CL64 chip storage, and the side window control unit adopts RS485 drive. Through the isolation chip solution, a 120Ω terminal resistance is added between the buses to increase the bus load capacity, improve the long-distance transmission capability, and ensure the stability of communication.

[0011] As a further improvement of the present invention: the interfaces of the side window control unit respectively include:

[0012] X1 / X2 interface, connected to the key control module and fault display module in the driver console through an 8-core cable;

[0013] The X3 / X4 interface is connected to the left window motor and the right window motor respectively through a 21-core cable;

[0014] X5, connected to the locomotive DC110V power supply with an external DC110V power supply through a 3-core cable;

[0015] X6 debugging interface, connected to an external debugging computer via a download cable.

[0016] The beneficial effects of the present invention are: 1. This solution is highly integrated, integrating the DC110-DC24V power supply system, servo motor drive, communication expansion board and the core board of the overall logic control module into one, adopting a one-to-two design; it can simultaneously control and drive the left and right windows of the driver's cab; optimize and upgrade the existing electric side window control system, and integrate the original multi-module distribution design, making the entire construction simpler and the operation more stable.

[0017] 2. DC110V-DC24V is the main circuit, which converts the external DC110V input of the whole vehicle. The front end is equipped with insurance, anti-reverse diode, support capacitor, EMI, ECM, lightning surge and other protection circuits to ensure the stability of the back-end power supply; the DI / DO drive adopts parallel port design and uses optical coupling isolation to improve the stability of the drive; the controller uses Ferroelectric FM25CL64 chip (64Kbit) for storage. The chip is an SPI interface with unlimited read and write times, fast read and write speed and low power consumption.

[0018] 3. The hardware external interface has a total of 6 connectors, namely X1 to X6 mentioned above, and the board end uses portable plug-in terminals for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a system framework diagram of the present invention.

[0020] Figure 2 It is a wiring framework diagram of the present invention.

[0021] Figure 3 A flowchart of a program guide for upgrading a controller in an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the clock tree driving configuration in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0024] Embodiment 1:

[0025] The electric side window control system of the driver's cab of a heavy-duty locomotive includes a side window control unit, which is composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to the servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through the power supply system.

[0026] Embodiment 2:

[0027] As a further optimization of the above embodiment: the electric side window control system of the driver's cab of a heavy-duty locomotive includes a side window control unit, which is composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to the servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through a power supply system; the power supply system includes a DC110V-DC24V conversion circuit, a DC24V-DC5V conversion circuit and a DC5V-DC3.3V conversion circuit.

[0028] Embodiment 3:

[0029] As a further optimization of the above embodiment: an electric side window control system for a heavy-duty locomotive driver's cab, comprising a side window control unit, the side window control unit being composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board being an overall logic control module, the core board being connected to a servo motor drive, and being respectively connected and controlled with motors through the servo motor drive, the motors comprising a left window motor and a right window motor; the core board being respectively connected to a button control module and a fault display module in a driver's console; the core board being powered by an external DC110V through a power supply system; the power supply system comprising a DC110V-DC24V conversion circuit, a DC24V-DC5V conversion circuit and a DC5V-DC3.3V conversion circuit; the DC110V-DC24V being a main circuit for converting the external DC110V input of the entire vehicle, and the output DC24V being power for the servo motor drive and the motor; a fuse, an anti-reverse diode, a support capacitor, EMI, an ECM and a lightning surge protection circuit being arranged at the front end of the DC110V-DC24V circuit.

[0030] Embodiment 4:

[0031] As a further optimization of the above embodiment: the electric side window control system of the driver's cab of a heavy-duty locomotive includes a side window control unit, which is composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to a servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through a power supply system; the power supply system includes It includes a DC110V-DC24V conversion circuit, a DC24V-DC5V conversion circuit and a DC5V-DC3.3V conversion circuit; the DC110V-DC24V is a main circuit for converting the external DC110V input of the whole vehicle, and the output DC24V is used to drive the servo motor and power the motor; the front end of the DC110V-DC24V circuit is equipped with a fuse, an anti-reverse diode, a support capacitor, EMI, ECM and a lightning surge protection circuit; the DC24V-DC5V conversion circuit provides an output for the 5V power supply of other driver chips and external encoders in the system.

[0032] Embodiment 5:

[0033] As a further optimization of the above embodiment: the electric side window control system of the driver's cab of a heavy-duty locomotive includes a side window control unit, which is composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to a servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through a power supply system; the power supply system includes a DC110V-DC24V conversion circuit, a DC24V-DC5V conversion circuit Circuit and DC5V-DC3.3V conversion circuit; the DC110V-DC24V is the main circuit for converting the external DC110V input of the whole vehicle, and the output DC24V is used to drive the servo motor and power the motor; the front end of the DC110V-DC24V circuit is equipped with insurance, anti-reverse diode, support capacitor, EMI, ECM and lightning surge protection circuit; the DC24V-DC5V conversion circuit provides output for 5V power supply of other driver chips and external encoders in the system; the DC5V-DC3.3V conversion circuit provides a power supply system for the MCU of the core board, and provides a 3.3V reference voltage and a reference base voltage for analog sampling.

[0034] Embodiment 6:

[0035] As a further optimization of the above embodiment: an electric side window control system for a heavy-duty locomotive driver's cab comprises a side window control unit, which consists of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to a servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, the motors comprising a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through a power supply system; the DI / DO drive of the side window control unit adopts a parallel port design and uses optical coupling isolation; and adopts ferroelectric FM25CL64 chip storage, the side window control unit adopts RS485 drive, and a 120Ω terminal resistance is added between the buses through an isolation chip solution to increase the bus load capacity, improve the long-distance transmission capability, and ensure the stability of communication.

[0036] Embodiment 7:

[0037] As a further optimization of the above embodiment: a heavy-duty locomotive cab electric side window control system includes a side window control unit, which is composed of a power supply system, a servo motor drive and a core board provided with a communication expansion board; the core board is an overall logic control module, the core board is connected to a servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a key control module and a fault display module in a driver's console; the core board is powered by an external DC110V through a power supply system; the interfaces of the side window control unit include:

[0038] X1 / X2 interface, connected to the key control module and fault display module in the driver console through an 8-core cable;

[0039] The X3 / X4 interface is connected to the left window motor and the right window motor respectively through a 21-core cable;

[0040] X5, connected to the locomotive DC110V power supply with an external DC110V power supply through a 3-core cable;

[0041] X6 debugging interface, connected to an external debugging computer via a download cable.

[0042] The system's electric drive control workflow is:

[0043] 1) Initialize the electric drive control mode, set the electric drive control target speed to 0, and start the motor control. At this time, the motor is in the brake state and the window maintains the current position.

[0044] 2) Determine the current electric drive control demand status based on the button status.

[0045] 3) When the up button is detected to be pressed, the motor forward start command is sent to set the motor running speed and the motor running time.

[0046] 4) When the down button is pressed, the motor reverse start command is sent to set the motor running speed and the motor running time.

[0047] 5) Detect the anti-pinch signal and read the motor running status information. When the anti-pinch signal appears, if it is in the rising state at this time, it will stop running immediately and execute the descending process to lower the window to the lowest level to protect foreign objects. When the motor state is abnormal, it will stop running immediately, maintain the current position of the motor, protect the hardware, and prevent abnormal events caused by excessive operating current and high temperature.

[0048] like Figure 3 As shown, the internal programs of the controller are divided into the bootloader and the App application. The controller online upgrade adopts RS485 communication mode and internal custom protocol, which can support breakpoint resume upgrade. The running logic of the controller program is as follows:

[0049] 1) The controller is powered on and the bootloader is run first;

[0050] 2) The bootloader requests an upgrade and waits for a response from the host computer.

[0051] 3) In the above request, if the host computer responds correctly, the program will proceed with the upgrade process;

[0052] 4) In the above request, if no correct response is received, after the timeout, determine again whether the application is correct.

[0053] 5) Continue with the process in 4). If the application is found to be legitimate, the program will jump to the application and the boot process will be completed.

[0054] 6) Continue with the process in 4). If the application fails to pass the legality judgment, the program continues to wait for the upper computer information and executes the upgrade process.

[0055] The controller involves clock tree driving. The clock tree provides the reference clock for the MCU core. The clock source uses an external clock. The clock is distributed to the APB and AHB buses by multiplying the clock source, PLL phase locking, and frequency division. The clock configuration of each bus is as follows: Figure 4 shown.

[0056] Anti-pinch signal detection:

[0057] 1) The system periodically detects the anti-pinch signal status, and the detection cycle is 10ms

[0058] 2) When the signal status is consistent for three consecutive times, the signal is considered normal.

[0059] Security protection mechanism:

[0060] The system safety protection mechanism includes anti-pinch signal detection, motor operation status detection, current detection, temperature detection, and operation timeout detection. If any of the above detections is abnormal, the corresponding exception handling process will be executed.

[0061] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0062] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. Electric side window control system for heavy-duty locomotive cab, characterized by: It includes a side window control unit, which consists of a power supply system, a servo motor drive and a core board with a communication expansion board; the core board is an overall logic control module, the core board is connected to the servo motor drive, and is respectively connected and controlled with motors through the servo motor drive, and the motors include a left window motor and a right window motor; the core board is respectively connected to a button control module and a fault display module in a driver's console; the core board is powered by an external DC110V through the power supply system.

2. The electric side window control system for the driver's cab of a heavy-duty locomotive according to claim 1 is characterized in that: The power supply system includes a DC110V-DC24V conversion circuit, a DC24V-DC5V conversion circuit and a DC5V-DC3.3V conversion circuit.

3. The electric side window control system for the driver's cab of a heavy-duty locomotive according to claim 2 is characterized in that: The DC110V-DC24V is a main circuit for converting the external DC110V input of the vehicle, and the output DC24V is used to drive the servo motor and power the motor; the front end of the DC110V-DC24V circuit is provided with insurance, anti-reverse diode, support capacitor, EMI, ECM and lightning surge protection circuit.

4. The electric side window control system for the driver's cab of a heavy-duty locomotive according to claim 3 is characterized in that: The DC24V-DC5V conversion circuit provides output for 5V power supply of other driver chips and external encoders in the system.

5. The electric side window control system for the driver's cab of a heavy-duty locomotive according to claim 4 is characterized in that: The DC5V-DC3.3V conversion circuit provides a power supply system for the MCU of the core board, and provides a 3.3V reference voltage and a reference base voltage for analog quantity sampling.

6. The electric side window control system for the driver's cab of a heavy-duty locomotive according to claim 1 is characterized in that: The DI / DO driver of the side window control unit adopts a parallel port design and uses optical coupling isolation; and uses a ferroelectric FM25CL64 chip for storage.

7. The electric side window control system for the driver's cab of a heavy-duty locomotive according to claim 1 is characterized in that: The interfaces of the side window control unit respectively include: X1 / X2 interface, connected to the key control module and fault display module in the driver console through an 8-core cable; The X3 / X4 interface is connected to the left window motor and the right window motor respectively through a 21-core cable; X5, connected to the locomotive DC110V power supply with an external DC110V power supply through a 3-core cable; X6 debugging interface, connected to an external debugging computer via a download cable.

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