Tire inflation and deflation control system for heavy off-road vehicle

Abstract

The invention relates to a tire inflation and deflation control system for a heavy off-road vehicle. The tire inflation and deflation control system comprises an instrument, an instrument operation switch, a vehicle-mounted display terminal, an inflation and deflation operation knob, a vehicle body controller and an inflation and deflation controller. The instrument and vehicle-mounted display terminal is integrated with a tire inflation and deflation operation interface and a parameter setting panel, and the instrument is connected with an instrument operation switch; the vehicle body controller is connected with the inflation and deflation operation knob; the instrument, the vehicle-mounted display terminal and the vehicle body controller receive an inflation and deflation operation instruction, the instruction is sent to the inflation and deflation controller through the CAN bus, inflation and deflation actions are executed through the inflation and deflation controller, and the inflation and deflation state is fed back to the vehicle-mounted display terminal or the instrument through the CAN bus to be displayed; by means of multiple control modes, the use requirements for inflation and deflation operation of a specified bridge or a whole vehicle, inflation and deflation system parameter setting and other different scenes are met.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a tire inflation / deflation control system for heavy-duty off-road vehicles. Background Technology

[0002] To improve the passability of heavy off-road vehicles, these vehicles are generally equipped with tire inflation / deflation systems that adjust tire pressure to adapt to different road conditions such as highways, deserts, and off-road terrain. Existing tire inflation / deflation systems typically use a separate control panel that receives operator commands and transmits them via a CAN bus to the tire inflation / deflation controller, which then executes the inflation / deflation actions. Simultaneously, the system's status is received via the bus and displayed on indicator lights or a screen on the panel. This approach has the following main drawbacks:

[0003] 1. A separate control panel will occupy limited dashboard space, making it difficult to arrange electrical components on the dashboard;

[0004] 2. In order to save space, the control panel usually displays the tire inflation / deflation system status through indicator lights or a small LCD screen, which makes it impossible to display a full range of system statuses;

[0005] 3. The control panel has a simple operation method, rigid steps, unintuitive interaction, inconvenient operation, and cannot meet the needs of quick operation.

[0006] 4. The system uses a single control panel. When the panel fails, the tire inflation / deflation system cannot be used properly, resulting in poor system reliability. Summary of the Invention

[0007] The purpose of this invention is to provide a tire inflation / deflation control system for heavy-duty off-road vehicles, addressing the shortcomings of existing technologies.

[0008] This invention is achieved using the following technical solution:

[0009] A tire inflation / deflation control system for a heavy-duty off-road vehicle includes an instrument panel, an instrument panel operation switch, an on-board display terminal, an inflation / deflation operation knob, a body controller, and an inflation / deflation controller. The instrument panel and the on-board display terminal integrate a tire inflation / deflation operation interface and a parameter setting panel. The instrument panel is connected to the instrument panel operation switch. The body controller is connected to the inflation / deflation operation knob. The instrument panel, the on-board display terminal, and the body controller receive inflation / deflation operation commands, send the commands to the inflation / deflation controller via a CAN bus, execute the inflation / deflation actions through the inflation / deflation controller, and feed back the inflation / deflation status to the on-board display terminal or the instrument panel for display via the CAN bus.

[0010] Preferably, the instrument operation switch is a multi-position inching self-reset switch, which includes a left selection button, a right selection button, a confirmation button, and an exit button. The instrument has a tire inflation / deflation operation interface and a parameter setting interface. When in the tire inflation / deflation operation interface, the left and right selection buttons are used for function or mode selection; the confirmation button is used to select or cancel the current function or mode selection, and the exit button is used to return to the previous interface. When in the parameter setting interface, the left and right selection buttons are used for system parameter selection, and the confirmation button is used to select or cancel the current system parameter selection. After selecting a system parameter, the left and right selection buttons are used to adjust the value of the system parameter, and the exit button is used to cancel the current system parameter.

[0011] Preferably, the vehicle-mounted display terminal is operated via a touchscreen, and the vehicle-mounted display terminal is equipped with a tire inflation / deflation operation interface and a parameter setting interface.

[0012] Preferably, the inflation / deflation control knob is a four-position rotary switch, including a stop position, a vehicle mode A position, a vehicle mode B position, and a vehicle mode C position; the body controller obtains the position information by collecting the output resistance values ​​of the stop position, vehicle mode A position, vehicle mode B position, and vehicle mode C position in real time, and sends the inflation / deflation command of the corresponding mode to the inflation / deflation controller.

[0013] Preferably, the tire inflation / deflation control knob is equipped with an indicator light, which has three states: off, constantly lit, and flashing, to indicate the status of the tire inflation / deflation system. When the tire inflation / deflation system is in standby mode, the indicator light is off; when inflation / deflation is in progress, the indicator light flashes; and when there is a malfunction in the tire inflation / deflation system, the indicator light is constantly lit.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] 1. Multiple control modes to meet the needs of different scenarios such as inflation / deflation operations for designated axles or the whole vehicle, and inflation / deflation system parameter settings;

[0016] 2. It boasts advantages such as a user-friendly, intuitive, and convenient interactive method, without requiring an additional control panel, thus reducing system hardware costs;

[0017] 3. Multi-source coordinated control results in high system reliability;

[0018] 4. The system reserves an external bus control interface and supports multi-control source collaborative control based on the built-in priority control scheme, providing a support platform for drive-by-wire, unmanned, and intelligent usage scenarios. Attached Figure Description

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

[0020] Attached image captions:

[0021] 1. Instrument panel; 2. Instrument panel operation switch; 3. Vehicle display terminal; 4. Inflation / deflation operation knob; 41. Stop position; 42. Vehicle mode A position; 43. Vehicle mode B position; 44. Vehicle mode C position; 45. Indicator light; 5. Body controller; 6. Inflation / deflation controller; 7. CAN bus. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0023] Example 1

[0024] like Figure 1 As shown, a tire inflation / deflation control system for a heavy-duty off-road vehicle includes an instrument panel 1, an instrument panel operation switch 2, an on-board display terminal 3, an inflation / deflation operation knob 4, a body controller 5, and an inflation / deflation controller 6. The instrument panel 1 and the on-board display terminal 3 are integrated with a tire inflation / deflation operation interface and a parameter setting panel. The instrument panel 1 is connected to the instrument panel operation switch 2. The body controller 5 is connected to the inflation / deflation operation knob 4. The instrument panel 1, the on-board display terminal 3, and the body controller 5 receive inflation / deflation operation commands and send the commands to the inflation / deflation controller 6 via a CAN bus 7. The inflation / deflation controller 6 executes the inflation / deflation action and feeds back the inflation / deflation status to the on-board display terminal 3 or the instrument panel 1 via the CAN bus 7 for display.

[0025] The inflation and deflation actions are performed by the inflation and deflation controller 6; the inflation and deflation controller 6 integrates a solenoid valve, which is used to inflate and deflate the tires; each tire has a corresponding solenoid valve, which can control each tire individually.

[0026] The instrument operation switch 2 is a multi-position inching self-reset switch, which includes a left selection button, a right selection button, a confirmation button, and an exit button. The instrument 1 has a tire inflation / deflation operation interface and a parameter setting interface. When in the tire inflation / deflation operation interface, the left and right selection buttons are used to select a function or mode; the confirmation button is used to select or cancel the current function or mode selection, and the exit button is used to return to the previous interface. When in the parameter setting interface, the left and right selection buttons are used to select system parameters, and the confirmation button is used to select or cancel the current system parameter selection. After selecting a system parameter, the left and right selection buttons are used to adjust the value of the system parameter, and the exit button is used to cancel the current system parameter.

[0027] The vehicle-mounted display terminal 3 is operated via touch screen and includes a tire inflation / deflation interface and a parameter setting interface.

[0028] The inflation / deflation control knob 4 is a four-position rotary switch, including a stop position 41, a vehicle mode A position 42, a vehicle mode B position 43, and a vehicle mode C position 44. The body controller 5 obtains the position information by collecting the output resistance values ​​of the stop position 41, vehicle mode A position 42, vehicle mode B position 43, and vehicle mode C position 44 in real time, and sends the inflation / deflation command for the corresponding mode to the inflation / deflation controller 6.

[0029] The inflation / deflation control knob 4 is set to four positions. The stop position 41 is used to stop the current inflation / deflation operation. The vehicle mode A position 42, vehicle mode B position 43, and vehicle mode C position 44 are the commonly used inflation / deflation modes. For example, vehicle mode A position 42 corresponds to the highway mode, vehicle mode B position 43 corresponds to the off-road mode, and vehicle mode C position 44 corresponds to the soft road surface mode. When the inflation / deflation control knob 4 is turned to the vehicle mode A position 42, which is the highway mode, the inflation / deflation controller 6 will automatically adjust the tire pressure value of each axle tire to the default tire pressure value set in the highway mode.

[0030] When the vehicle body controller 5 detects a change in the gear position of the inflation / deflation control knob 4, it initiates gear position detection. If the gear position does not change within 1 second, it is assumed that the operator has finished the operation. At this time, it is determined whether the current gear position is consistent with the current tire pressure inflation / deflation mode. If they are consistent, no new control command is sent. If they are inconsistent, a stop command is sent first, and a new control command is sent after the stop is completed.

[0031] The tire inflation / deflation control knob 4 is equipped with an indicator light 45, which has three states: off, constantly lit, and flashing, to indicate the status of the tire inflation / deflation system. When the tire inflation / deflation system is in standby mode, the indicator light 45 is off; when inflation / deflation is in progress, the indicator light 45 flashes; and when there is a malfunction in the tire inflation / deflation system, the indicator light 45 is constantly lit.

[0032] Example 2

[0033] To facilitate coordinated control of the tire inflation / deflation system by multiple control sources such as Instrument Panel 1, Vehicle Display Terminal 3, Body Controller 5, or external controllers, a priority control scheme is implemented. The parameter setting function has a higher priority than the inflation / deflation operation command; that is, the inflation / deflation operation command is disabled during parameter setting. During inflation / deflation operations, the priority is determined based on the source address of the CAN bus 7 message, from highest to lowest: Body Controller 5, Instrument Panel 1 or Vehicle Display Terminal 3, and external controller. Instrument Panel 1 and Vehicle Display Terminal 3 have the same priority, using a time-priority order. A higher-priority control source can interrupt inflation / deflation operations initiated by a lower-priority control source; control sources at the same level cannot interrupt each other.

Claims

1. A heavy off-road vehicle tire inflation control system characterized by, The application relates to a tire inflation and deflation system for a vehicle, which comprises an instrument (1), an instrument operation switch (2), a vehicle-mounted display terminal (3), a tire inflation and deflation operation knob (4), a vehicle body controller (5) and a tire inflation and deflation controller (6); the instrument (1) and the vehicle-mounted display terminal (3) are integrally provided with a tire inflation and deflation operation interface and a parameter setting panel, the instrument (1) is connected with the instrument operation switch (2), the vehicle body controller (5) is connected with the tire inflation and deflation operation knob (4), the instrument (1), the vehicle-mounted display terminal (3) and the vehicle body controller (5) receive tire inflation and deflation operation instructions, the instructions are sent to the tire inflation and deflation controller (6) through a CAN bus (7), the tire inflation and deflation controller (6) executes tire inflation and deflation actions, and the tire inflation and deflation states are fed back to the vehicle-mounted display terminal (3) or the instrument (1) through the CAN bus (7) for display.

2. The heavy off-road vehicle tire inflation control system of claim 1 wherein, The instrument operation switch (2) is a multi-gear point-action self-resetting switch, the instrument operation switch (2) comprises left selection keys, right selection keys, a confirmation key and an exit key; the instrument (1) is provided with a tire inflation and deflation operation interface and a parameter setting interface, when being in the tire inflation and deflation operation interface, the left selection keys and the right selection keys are used for function or mode selection; the confirmation key is used for selecting or canceling the current function or mode selection, and the exit key is used for returning to the previous interface; when being in the parameter setting interface, the left selection keys and the right selection keys are used for system parameter selection, the confirmation key is used for selecting or canceling the current system parameter selection, and when the system parameter is selected, the left selection keys and the right selection keys are used for adjusting the value of the system parameter; and the exit key is used for canceling the current system parameter.

3. The heavy off-the-road tire inflation control system according to claim 1, characterized in that, The vehicle-mounted display terminal (3) is of a touch screen type, and the vehicle-mounted display terminal (3) is provided with a tire inflation and deflation operation interface and a parameter setting interface.

4. The heavy off-the-road tire inflation control system according to claim 1, characterized in that, The tire inflation and deflation operation knob (4) is a four-gear knob switch, comprising a stop gear (41), a whole vehicle mode A gear (42), a whole vehicle mode B gear (43) and a whole vehicle mode C gear (44); the vehicle body controller (5) obtains gear information by collecting the output resistance values of the stop gear (41), the whole vehicle mode A gear (42), the whole vehicle mode B gear (43) and the whole vehicle mode C gear (44) in real time, and sends tire inflation and deflation instructions in the corresponding mode to the tire inflation and deflation controller (6).

5. The heavy off-the-road tire inflation control system according to claim 4, characterized in that, The tire inflation and deflation operation knob (4) is provided with an indicator lamp (45), the indicator lamp (45) comprises three states of being off, always on and flickering, and is used for indicating the state of the tire inflation and deflation system; when the tire inflation and deflation system is in a standby state, the indicator lamp (45) is off; when the tire inflation and deflation operation is being performed, the indicator lamp (45) is flickering; and when the tire inflation and deflation system has a fault, the indicator lamp (45) is always on.

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