Mixer truck control system and control method

Abstract

The application discloses a mixer truck control system and a control method. The mixer truck is provided with a mixing tank. The control system comprises a detection module, a power module and a control module. The detection module is used for collecting driving posture data and load state data of the mixer truck. The control module is connected with the detection module and the power module. The detection module, the power module and the control module are arranged on the mixer truck. The control module adjusts the driving speed of the mixer truck and the rotating speed of the mixing tank in real time according to the driving posture data and the load state data detected by the detection module. The driving working condition of the mixer truck and the mixing parameter are coordinated and linked. The driving power performance of the mixer truck and the stability of the mixing tank rotation in the mixing operation are considered. Manual intervention adjustment of the driver is not needed. The driving load of the driver is reduced. The safety of the mixing operation is improved.

Description

Technical Field

[0001] This application relates to the field of concrete mixer truck technology, and in particular to a concrete mixer truck control system and control method. Background Technology

[0002] With tightening environmental policies and the iteration of new energy technologies, pure electric concrete mixer trucks have become the mainstream direction for industry upgrades. Their core requirement is to achieve zero emissions and low noise while ensuring the stability and safety of traditional mixing operations. During transportation, the mixing drum of a concrete mixer truck needs to rotate continuously to prevent the material inside from solidifying; therefore, the speed of the mixing drum needs to be continuously controlled.

[0003] In existing technologies, the speed of the mixing tank is mainly controlled by a fixed speed. This speed control method is widely used in traditional fuel and pure electric mixer trucks. The driver manually sets the speed of the mixing tank to a fixed value in advance through the control panel of the superstructure. It only supports manual start and stop or gear switching, and maintains a constant speed throughout the process. It does not have the ability to adapt to working conditions.

[0004] It can be seen that the existing mixing tank speed control system has the following disadvantages: (1) Under heavy load uphill conditions, the vehicle tilting causes the material inside the mixing tank to be unbalanced, and the fixed speed cannot provide enough centrifugal force to constrain the material, which can easily cause the material to leak from the feed port, resulting in material loss and road pollution, and may even cause rear-end collisions due to the inability of the following vehicles to avoid it. (2) The existing manual adjustment mode requires the driver to operate the control panel in complex road conditions (such as climbing), which conflicts with the uphill driving operation, increases the driving risk, and cannot match the dynamic changes of the working conditions in real time. (3) Under flat or downhill conditions, maintaining a high speed is a waste of battery energy for pure electric vehicles, which shortens the vehicle's range. (4) The current pure electric mixer trucks generally adopt an architecture in which the driving motor and the mixing tank drive motor are independently controlled. Due to the lack of power coupling between the two, power distribution conflicts are likely to occur under complex working conditions (such as heavy load uphill or rapid acceleration), which reduces the stability of the vehicle operation and restricts the control accuracy. Summary of the Invention

[0005] This application aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of this application is to provide a mixer truck control system and control method to solve the problem that the rotational speed of the existing mixing tank cannot be adjusted according to the load condition and is not linked to the driving state of the mixer truck.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A mixer truck control system, applied to a mixer truck with a mixing tank, the mixer truck control system comprising: The detection module is used to collect the driving posture data and load status data of the mixer truck; The power module is used to drive the mixer truck and operate the mixing tank; The control module, which is connected to the detection module and the power module respectively, is used to adjust the driving speed of the mixer truck and the rotation speed of the mixing tank in real time based on the driving posture data and the load status data.

[0007] According to some embodiments of this application, the detection module includes a first sensor, a second sensor, and a throttle acquisition signal unit. The first sensor is used to detect the driving posture data of the mixer truck; the second sensor is used to detect the load status data of the mixer truck; and the throttle acquisition signal unit is used to detect the throttle pedal data of the mixer truck. The first sensor, the second sensor, and the throttle acquisition signal unit are respectively connected to the control module.

[0008] According to some embodiments of this application, the power module includes a driving unit, a mixing tank driving unit, and a power coordination unit. The driving unit is connected to the mixer truck and is used to drive the mixer truck to travel. The mixing tank driving unit is connected to the mixing tank and is used to drive the mixing tank to operate. The power coordination unit is connected to both the driving unit and the mixing tank driving unit, and controls the driving unit according to the instructions of the control module to adjust the speed of the mixer truck, and synchronously controls the mixing tank driving unit to adjust the rotation speed of the mixing tank, thereby realizing the linkage control between the rotation speed of the mixing tank and the speed of the mixer truck.

[0009] According to some embodiments of this application, the mixing tank drive unit includes a mixing tank drive motor, a reducer, and a motor controller. One end of the motor controller is connected to the control module, and the other end is connected to the mixing tank drive motor. The motor controller is used to control the start and stop of the mixing tank drive motor. The input end of the mixing tank drive motor is connected to the motor controller, and the output end of the mixing tank drive motor is connected to the input end of the reducer. The output end of the reducer is connected to the mixing tank, and the reducer is used to adjust the rotational speed of the mixing tank.

[0010] According to some embodiments of this application, the mixer truck control system further includes a cooling module, which is connected to both the control module and the power module, and is used to dissipate heat from the power module under the control of the control module.

[0011] A method for controlling a concrete mixer truck, implemented using the aforementioned concrete mixer truck control system, includes: Start the mixer truck and mixing tank; The detection module collects the driving posture data and load status data of the mixer truck and sends them to the control module; The control module determines the current driving condition of the mixer truck based on driving posture data and load status data; The control module generates a power distribution command based on the current driving conditions and sends it to the power module. The power module then dynamically coordinates the driving speed of the mixer truck with the rotation speed of the mixing tank based on the power distribution command.

[0012] According to some embodiments of this application, the control module determines the current driving condition of the mixer truck based on driving posture data and load status data, including: If the gradient is greater than or equal to the gradient threshold and the load is greater than or equal to the heavy load threshold, the current driving condition is determined to be a heavy load uphill condition. If the gradient is less than the gradient threshold, or the load is less than the heavy load threshold, the current driving condition is determined to be a normal driving condition.

[0013] According to some embodiments of this application, the slope threshold is 5° and the heavy load threshold is 80% of the rated load of the mixer truck.

[0014] According to some embodiments of this application, the control module generates a power distribution command based on the current driving conditions and sends it to the power module. The power module dynamically coordinates the driving speed of the mixer truck and the rotation speed of the mixing tank according to the power distribution command, including: If the current driving condition is normal, the control module generates a full power output command to ensure that the driving speed of the mixer truck meets the driving requirements, and the mixing tank operates at the currently set target speed. If the current driving condition is a heavy-load uphill condition, the control module generates a power priority allocation command to prioritize ensuring that the driving speed of the mixer truck meets the vehicle's climbing or braking safety requirements. At the same time, it dynamically controls the rotation speed of the mixing tank within the adjustment range, and the lower limit of the adjustment range is 80% of the target rotation speed.

[0015] According to some embodiments of this application, in the power priority allocation instruction, the formula for calculating the rotational speed of the stirring tank is: Mixing tank rotation speed = 1 + 0.17 × throttle pedal opening; The accelerator pedal is connected to the control module. The driver adjusts the opening of the accelerator pedal according to driving needs, and the control module adjusts the rotation speed of the mixing tank through the power module based on the detected accelerator pedal opening.

[0016] The beneficial effects of this application are: The mixer truck control system of this application, by setting a detection module, a power module and a control module on the mixer truck, allows the control module to adjust the driving speed of the mixer truck and the rotation speed of the mixing tank in real time based on the driving posture data and load status data detected by the detection module. This achieves coordination and linkage between the driving conditions of the mixer truck and the mixing parameters, taking into account both the driving power performance of the mixer truck and the rotational stability of the mixing tank during the mixing operation. It eliminates the need for manual intervention by the driver, reduces the driver's driving load, and improves the safety of the mixing operation.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the mixer truck control system used in this application for a mixer truck. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the mixer truck control system used in this application for a mixer truck. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the mixer truck control system used in this application for a mixer truck. Figure 3 .

[0021] Figure 4 This is a flowchart of the mixer truck control method of this application.

[0022] Figure 5 It is a graph showing the correlation between the accelerator pedal opening and the speed of the mixing tank.

[0023] Figure label: 100. Cement mixer truck; 110. Driver's cab; 200. Control module; 300, First sensor; 400, Second sensor; 500, Drive unit; 600, Mixing tank drive motor; 700, Motor controller; 800, Cooling module; 900, Power battery unit; 1000, Charging socket; 1100, Electric air compressor; 1200, Control panel. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] In the description of this application, if words such as several, greater than, less than, exceeding, above, below, or within appear, "several" means one or more, "more than" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, and "above," "below," "within," etc. are understood to include the number itself.

[0027] In the description of this application, the use of terms such as "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0028] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 5 The following are specific embodiments of this application.

[0030] Depend on Figures 1 to 3 As shown, this application provides a mixer truck control system applied to a mixer truck 100 with a mixing tank (not shown). The mixer truck control system includes a detection module, a power module, and a control module 200. The detection module is used to collect driving posture data and load status data of the mixer truck 100; the power module is used to drive the mixer truck 100 and the mixing tank; the control module 200 is connected to the detection module and the power module respectively, and communicates with them through a CAN bus. The control module 200 is used to adjust the driving speed of the mixer truck 100 and the rotation speed of the mixing tank in real time according to the driving posture data and load status data, so as to realize the linkage control of the driving conditions and mixing parameters of the mixer truck 100.

[0031] The mixer truck control system of this application, by setting a detection module, a power module and a control module on the mixer truck, allows the control module to adjust the driving speed of the mixer truck and the rotation speed of the mixing tank in real time based on the driving posture data and load status data detected by the detection module. This achieves coordination and linkage between the driving conditions of the mixer truck and the mixing parameters, taking into account both the driving power performance of the mixer truck and the rotational stability of the mixing tank during the mixing operation. It eliminates the need for manual intervention by the driver, significantly reducing the driver's workload and improving the safety of the mixing operation.

[0032] In some embodiments, the detection module includes a first sensor 300, a second sensor 400, and a throttle acquisition signal unit (not shown). The first sensor 300 is used to detect the driving posture data of the mixer truck 100. The second sensor 400 is used to detect the load status data of the mixer truck 100. The throttle acquisition signal unit is used to detect the data of the accelerator pedal located in the cab 110 inside the mixer truck 100. The first sensor 300, the second sensor 400, and the throttle acquisition signal unit are respectively connected to the control module 200.

[0033] The first sensor 300 is a tilt sensor, located in the middle of the longitudinal beam of the chassis at the bottom of the cab 110. It is used to detect the longitudinal slope angle, tilt direction and attitude change of the mixer truck 100 in real time, and transmit the data to the control module 200. The control module 200 determines whether the vehicle is on an uphill, downhill or flat road based on the driving attitude data.

[0034] Furthermore, the first sensor 300 outputs an analog electrical signal to the control module 200 with a range of 0-5V, a detection accuracy of ±0.1°, and a detection slope range of -45° to +45°.

[0035] In some embodiments, at least two second sensors 400 are provided and evenly distributed on the frame of the mixer truck 100. Preferably, the second sensors 400 are pressure sensors, and there are four of them, symmetrically installed in pairs on the elastic support points on the left and right sides of the front suspension and the left and right sides of the rear suspension of the mixer truck. The elastic support points are preferably suspension spring seats. The second sensors 400 are used to collect signals of suspension airbag pressure or suspension leaf spring load, and output the signals to the control module 200. The control module 200 determines whether the mixer truck 100 is in a heavy load state based on the load status data.

[0036] In some embodiments, the throttle acquisition signal unit is a throttle pedal sensor. The throttle pedal outputs a 0-5V analog electrical signal to the throttle pedal sensor. The throttle pedal sensor is used to acquire the throttle pedal opening (0-100%) and pedaling speed signals in real time and transmit them synchronously to the control module 200.

[0037] In some embodiments, the power module includes a driving unit 500, a mixing tank driving unit, and a power coordination unit (not shown). The driving unit 500 is connected to the mixer truck 100 and is used to drive the mixer truck 100 to travel. The mixing tank driving unit is connected to the mixing tank and is used to drive the mixing tank to rotate. The power coordination unit is connected to both the driving unit 500 and the mixing tank driving unit, and adjusts the driving unit according to the instructions of the control module 200 to adjust the travel speed of the mixer truck 100, and synchronously adjusts the mixing tank driving unit to adjust the rotation speed of the mixing tank, thereby realizing the linkage control between the rotation speed of the mixing tank and the travel speed of the mixer truck 100.

[0038] Furthermore, the driving unit 500 is a driving motor used to convert electrical energy into mechanical energy, providing driving force for the movement of the mixer truck 100, and can realize regenerative braking.

[0039] The mixing tank drive unit includes a mixing tank drive motor 600, a reducer (not shown), and a motor controller 700. One end of the motor controller 700 is electrically connected to the control module, and the other end is electrically connected to the mixing tank drive motor 600. The motor controller 700 is used to drive the mixing tank drive motor 600 to start, stop, steer, adjust speed, and provide safety protection under the instructions of the control module. The input end of the mixing tank drive motor 600 is electrically connected to the motor controller 700, and its output end is mechanically connected to the input end of the reducer, preferably using a coupling. The mixing tank drive motor 600 is used to drive the mixing tank to rotate, providing power for concrete mixing and unloading. The output end of the reducer is connected to the mixing tank, and the reducer is used to adjust the speed of the mixing tank to improve the stability of the mixing tank operation.

[0040] Specifically, the electrical connection in this application is via a communication bus, with CAN bus being the preferred choice.

[0041] Preferably, the stirring speed of the mixing tank is adjustable within the range of 1 r / min to 18 r / min.

[0042] The power coordination unit is connected to the control module 200 and the driving motor respectively. When the driving speed and rotation speed are controlled in a coordinated manner, it prioritizes the driving power demand and synchronously distributes the power supply of the mixing tank drive motor 600 to ensure that the rotation speed and vehicle speed increase synchronously.

[0043] In some embodiments, the control module 200 is a vehicle controller.

[0044] In some embodiments, the mixer truck control system of this application further includes a cooling module 800. The cooling module 800 is connected to the control module 200 and the power module via pipelines, and is used to dissipate heat from the power module under the control of the control module 200. Specifically, the cooling module 800 is a motor and electronic control cooling unit, which dissipates heat from the control module 200 and the power module through coolant, thereby controlling the temperature of the control module and the power module and ensuring the efficiency, stability and durability of the power module operation.

[0045] In some embodiments, the mixer truck control system further includes a battery module, which includes a power battery unit 900 and a charging socket 1000. The power battery unit 900 is connected to the driving unit 500, the mixing tank driving unit and the power coordination unit, respectively, to provide electrical energy to the vehicle and absorb the energy generated when the mixer truck 100 is electrically braking, thereby reducing the energy consumption of the mixer truck 100 and extending the range of the mixer truck 100 on a single charge.

[0046] The charging socket 1000 is located on the mixer truck 100 and is used to connect external charging equipment and charge the power battery unit 900.

[0047] In some embodiments, the mixer truck control system further includes an electric air compressor 1100, one end of which is connected to the power battery unit 900 and the other end is electrically connected to the control module 200, for providing an air source for the mixer truck 100. By converting electrical energy into air pressure energy, stable and clean compressed air is generated and supplied to the mixer truck's air braking and air circuit system. When the driver depresses the brake pedal, the control module 200 adjusts the air source flow to the brake chamber to generate braking torque, thereby braking the mixer truck 100.

[0048] In some embodiments, a control panel 1200 is provided on the body of the mixer truck 100. The control panel 1200 is used by the driver to operate and adjust the operating parameters of the mixing tank. It supports the driver to manually set the base speed (adapted to flat road light load conditions). The priority of manually set speed is lower than that of automatic control mode.

[0049] In some embodiments, the cab 110 is also equipped with an instrument panel (not shown), which is used to display the current control mode of the mixer truck 100, specifically including: displaying whether it is currently in automatic linkage or manual setting; and also displaying heavy load status data and slope status, so that the driver can know the operation status of the mixer truck control system in real time.

[0050] Depend on Figure 4 As shown, this application also provides a mixer truck control method, implemented using a mixer truck control system, including: S100, start the mixer truck and mixing tank.

[0051] Specifically, after the mixer truck 100 is started, the driving unit 500, the power module and the control module 200 perform self-tests, the first sensor 300 and the second sensor 400 calibrate the zero point, the mixing tank driving unit enters the standby state, the target speed of the mixing tank is set to 1 r / min, and the control module 200 controls the power module to start the mixer truck 100 and the mixing tank, so that the mixer truck enters the running state.

[0052] S200: The detection module collects the driving posture data and load status data of the mixer truck and sends them to the control module.

[0053] Specifically, during operation, the first sensor 300 collects the driving posture data of the mixer truck and sends it to the control module, while the second sensor 400 collects the load status data of the mixer truck and sends it to the control module.

[0054] The S300 control module determines the current operating condition of the mixer truck based on driving posture data and load status data. Specifically, this includes: S310, the control module 200 collects the slope signal of the mixer truck 100 collected by the first sensor 300, the load signal collected by the second sensor 400, and the accelerator pedal opening and speed signal collected by the accelerator pedal sensor at a frequency of 10Hz to ensure the real-time performance of the collected signals.

[0055] The control module 200 is connected to the first sensor 300, the second sensor 400 and the accelerator pedal sensor via a CAN bus to acquire the collected signals.

[0056] S320. Based on the collected signal data, determine the current operating condition of the mixer truck: If the gradient is greater than or equal to the gradient threshold and the load is greater than or equal to the heavy load threshold, the current driving condition is determined to be a heavy load uphill condition. If the gradient is less than the gradient threshold, or the load is less than the heavy load threshold, the current driving condition is determined to be a normal driving condition.

[0057] If the slope is less than the slope threshold and is positive, it means that the mixer truck 100 is traveling on a flat road; if the slope is negative, it means that the mixer truck 100 is traveling on a downhill road.

[0058] If the load is less than the heavy load threshold, it means that the mixer truck 100 is in a light load state.

[0059] Preferably, the slope threshold is 5°, and the heavy load threshold is 80% of the rated load of the mixer truck. Compared with the prior art, which only adjusts the load value to trigger the anti-tipping effect, leading to over-adjustment under non-heavy load uphill conditions, this application divides the driving conditions by setting both slope and heavy load thresholds, which makes the determination of driving conditions more accurate. At the same time, it can ensure the anti-tipping effect, avoid over-adjustment, reduce the energy consumption of the power battery unit, and improve energy utilization efficiency.

[0060] S400: The control module generates a power distribution command based on the current driving conditions and sends it to the power module. The power module dynamically coordinates the driving speed of the mixer truck and the rotation speed of the mixing tank according to the power distribution command. Specifically, this includes: If the current driving condition is normal, the control module 200 generates a full power output command to ensure that the driving speed of the mixer truck 100 meets the driving requirements, and the mixing tank operates at the currently set target speed. If the current driving condition is a heavy-load uphill condition, the control module 200 generates a power priority allocation command to prioritize ensuring that the driving speed of the mixer truck 100 meets the vehicle's climbing or braking safety requirements. At the same time, it dynamically controls the rotation speed of the mixing tank within the adjustment range, and the lower limit of the adjustment range is 80% of the target rotation speed. Preferably, the adjustment range is 1 r / min-18 r / min.

[0061] In some embodiments, the control module 200 calculates in real time using the following calculation model and dynamically adjusts the power distribution between the driving motor and the mixing tank drive motor 600.

[0062] The calculation model for the power requirement of the driving motor is as follows: ; In the formula: P drive-demand The required power of the drive motor is given by f, which represents a function; α is the accelerator pedal opening; v represents the speed of the mixer truck at 100; θ is the gradient; and F is the overall vehicle resistance. This model represents the required power of the drive motor calculated by coupling multiple parameters.

[0063] Specifically: When the driver presses the accelerator pedal, the accelerator pedal opening increases. The control module 200 combines the current vehicle speed and slope to determine whether the mixer truck needs to overcome gravity to climb the slope or overcome wind resistance to accelerate, and calculates the minimum power required by the drive motor to meet the driver's desired acceleration and maintain the current vehicle speed.

[0064] The calculation model for the required power of the mixing tank drive motor is as follows: ; In the formula: P mix-demandLet f represent the required power of the mixing tank drive motor; n represent the target mixing speed; T represent the load torque of the mixing tank; and M represent the weight of the material inside the mixing tank. This model represents the required power of the mixing tank drive motor calculated by coupling multiple parameters.

[0065] Specifically: the control module 200 acquires the speed of the mixer truck and queries the corresponding target mixing speed according to the existing speed-speed mapping table; the control module 200 monitors the output status of the mixing tank motor in real time and calculates the current mixing tank load torque in combination with the weight of the material in the tank, and then calculates the minimum required power of the mixing tank drive motor to meet the current mixing process requirements based on the obtained target mixing speed and mixing tank load torque. The target mixing speed is the target speed of the mixing tank mentioned above.

[0066] Total power constraint: ; In the formula: P total-max This is the maximum permissible output power of the power battery unit 900. If the sum of the power demanded by the driving motor and the power demanded by the mixing tank drive motor does not exceed the maximum permissible output power of the power battery unit 900, it indicates that the current driving condition is a normal condition, and the corresponding full power output command will be executed, with both the driving motor and the mixing tank drive motor outputting their full power demand.

[0067] If the upper limit is exceeded, it means that the current driving condition is a heavy-load uphill condition. The corresponding power priority allocation command will prioritize the power required by the driving motor to ensure that the driving speed of the mixer truck 100 meets the vehicle's climbing or braking safety requirements. At the same time, the speed of the mixing tank will be dynamically controlled within the adjustment range, and the lower limit of the adjustment range is 80% of the target speed.

[0068] The specific formula for adjusting the rotation speed of the mixing tank is as follows: Mixing tank rotation speed = 1 + 0.17 × throttle pedal opening; The accelerator pedal is electrically connected to the control module 200. The driver adjusts the opening of the accelerator pedal according to driving needs, and the control module 200 adjusts the rotation speed of the mixing tank through the power module based on the detected accelerator pedal opening.

[0069] Specifically: When the accelerator pedal is 0% open, it indicates that the mixer truck is idling or stopped. The mixing tank speed is set to the lower limit of the adjustment range to maintain basic mixing. Preferably, the lower limit of the adjustment range is 1 r / min.

[0070] When the accelerator pedal opening is set to the middle value, such as 50%, the mixing tank speed is 1 + 0.17 × 50 = 9.5 r / min.

[0071] like Figure 5 As shown, there is a linear relationship between the accelerator pedal opening and the mixing tank speed, so as to dynamically adjust the anti-tipping capability while matching the vehicle's power demand, and realize the linkage between the accelerator pedal opening and the mixing tank speed.

[0072] When the accelerator pedal is 100% open, it indicates that the mixer truck is in full power output mode, such as under heavy load on a steep slope. At this time, the mixing drum speed = 1 + 0.17 × 100 = 18 r / min. The mixing drum speed is set to the upper limit of the adjustment range to prevent spillage at maximum speed.

[0073] By synchronizing the accelerator pedal opening with the mixing tank's rotation speed, the mixer truck achieves stronger power and higher speed when climbing hills, resulting in better anti-tipping performance. Simultaneously, an adjustment range for the mixing tank's rotation speed is set to avoid excessively high or low speeds, thus achieving an optimal balance between anti-tipping safety, energy economy, and overall vehicle lifespan.

[0074] By allocating power between the drive motor and the mixing tank drive motor, the core principle is to ensure the limited driving power of the mixer truck, synchronized adjustment of the mixing tank speed, and controllable total vehicle power. Specifically, based on the driver's throttle input, the mixing tank speed is increased synchronously with the vehicle speed through a speed-mixing speed mapping relationship, using centrifugal force to prevent leakage. Simultaneously, the total power is monitored in real time; if limits are exceeded, priority is given to maintaining driving power while moderately limiting mixing power. This satisfies both driving requirements and material safety. All allocation logic revolves around the core objectives of project implementation and leakage prevention, balancing reliability and practicality.

[0075] S500, Operating Condition Switching and Reset.

[0076] Specifically: When the slope is detected to be less than 5° or the load is less than the heavy load threshold, the mixer truck control system automatically switches back to normal operating conditions, and the mixing drum speed drops to the initial speed value manually set by the driver at a preset rate. After the mixer truck stops running and the engine is turned off, the control system clears the data and completes the reset.

[0077] Preferably, the drop rate is 1 r / min to avoid sudden changes in the mixing tank speed that could cause material inside the tank to shake, thereby improving the overall vehicle driving stability, protecting the chassis structure of the mixer truck and the mechanical components of the mixing tank, and extending the service life of the entire vehicle.

[0078] This application utilizes a control system comprised of a detection module, a power module, and a control module mounted on the concrete mixer truck. By detecting the truck's driving posture and load data, it determines the driving conditions using both slope and load parameters. Based on these driving conditions, and in conjunction with the coordinated control between the truck's speed and the mixing tank's rotation speed, it improves anti-tipping performance, reduces material loss and safety risks, and is suitable for the heavy-duty operation requirements of pure electric concrete mixer trucks. Furthermore, the truck's speed and the mixing tank's rotation speed can be simultaneously controlled via throttle operation, eliminating the need for the driver to manually adjust the mixing tank's speed. This reduces driver distraction, lowers driver workload, decreases the risk of fatigue driving, and enhances driving safety, making it suitable for continuous operations in complex road conditions such as construction sites.

[0079] In the description of this specification, the use of terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A mixer truck control system, characterized in that, A control system for a mixer truck having a mixing tank includes: The detection module is used to collect the driving posture data and load status data of the mixer truck; The power module is used to drive the mixer truck and operate the mixing tank; The control module, which is connected to the detection module and the power module respectively, is used to adjust the driving speed of the mixer truck and the rotation speed of the mixing tank in real time based on the driving posture data and the load status data.

2. The mixer truck control system according to claim 1, characterized in that, The detection module includes a first sensor, a second sensor, and a throttle signal acquisition unit. The first sensor is used to detect the driving posture data of the mixer truck; the second sensor is used to detect the load status data of the mixer truck. The throttle acquisition signal unit is used to detect the throttle pedal data of the mixer truck. The first sensor, the second sensor, and the throttle acquisition signal unit are respectively connected to the control module.

3. The mixer truck control system according to claim 1, characterized in that, The power module includes a driving unit, a mixing tank driving unit, and a power coordination unit. The driving unit is connected to the mixer truck and is used to drive the mixer truck. The mixing tank driving unit is connected to the mixing tank and is used to drive the mixing tank to operate. The power coordination unit is connected to both the driving unit and the mixing tank driving unit. According to the instructions of the control module, the power coordination unit regulates the driving unit to adjust the speed of the mixer truck and synchronously regulates the mixing tank driving unit to adjust the rotation speed of the mixing tank, thereby realizing the linkage control between the rotation speed of the mixing tank and the speed of the mixer truck.

4. The mixer truck control system according to claim 3, characterized in that, The mixing tank drive unit includes a mixing tank drive motor, a reducer, and a motor controller. One end of the motor controller is connected to the control module, and the other end is connected to the mixing tank drive motor. The motor controller is used to control the start and stop of the mixing tank drive motor. The input terminal of the stirring tank drive motor is connected to the motor controller, the output terminal of the stirring tank drive motor is connected to the input terminal of the reducer, and the output terminal of the reducer is connected to the stirring tank. The reducer is used to adjust the rotational speed of the stirring tank.

5. The mixer truck control system according to claim 1, characterized in that, The mixer truck control system also includes a cooling module, which is connected to both the control module and the power module, and is used to dissipate heat from the power module under the control of the control module.

6. A method for controlling a concrete mixer truck, characterized in that, Implemented using the mixer truck control system according to any one of claims 1-5, comprising: Start the mixer truck and mixing tank; The detection module collects the driving posture data and load status data of the mixer truck and sends them to the control module; The control module determines the current driving condition of the mixer truck based on driving posture data and load status data; The control module generates a power distribution command based on the current driving conditions and sends it to the power module. The power module then dynamically coordinates the driving speed of the mixer truck with the rotation speed of the mixing tank based on the power distribution command.

7. The mixer truck control method according to claim 6, characterized in that, The control module determines the current driving condition of the mixer truck based on driving posture data and load status data, including: If the gradient is greater than or equal to the gradient threshold and the load is greater than or equal to the heavy load threshold, the current driving condition is determined to be a heavy load uphill condition. If the gradient is less than the gradient threshold, or the load is less than the heavy load threshold, the current driving condition is determined to be a normal driving condition.

8. The mixer truck control method according to claim 7, characterized in that, The slope threshold is 5°, and the heavy load threshold is 80% of the rated load of the mixer truck.

9. The mixer truck control method according to claim 7, characterized in that, The control module generates a power distribution command based on the current driving conditions and sends it to the power module. The power module dynamically coordinates the driving speed of the mixer truck and the rotation speed of the mixing tank according to the power distribution command, including: If the current driving condition is normal, the control module generates a full power output command to ensure that the driving speed of the mixer truck meets the driving requirements, and the mixing tank operates at the currently set target speed. If the current driving condition is a heavy-load uphill condition, the control module generates a power priority allocation command to prioritize ensuring that the driving speed of the mixer truck meets the vehicle's climbing or braking safety requirements. At the same time, it dynamically controls the rotation speed of the mixing tank within the adjustment range, and the lower limit of the adjustment range is 80% of the target rotation speed.

10. The mixer truck control method according to claim 9, characterized in that, In the power priority allocation instruction, the formula for calculating the rotational speed of the stirring tank is: Mixing tank rotation speed = 1 + 0.17 × throttle pedal opening; The accelerator pedal is connected to the control module. The driver adjusts the opening of the accelerator pedal according to driving needs, and the control module adjusts the rotation speed of the mixing tank through the power module based on the detected accelerator pedal opening.

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