Method for counting transportation times of pure electric mining dump truck

Abstract

The invention discloses a pure electric mining dump truck transportation frequency statistical method which comprises the following steps: step 1, judging initial conditions of unloading, and if the initial conditions are judged to be unloading, entering step 2; 2, whether unloading is effective or not is judged according to the first unloading effectiveness condition and the second unloading effectiveness condition, and if yes, the step 3 is executed; 3, the unloading effectiveness of the corresponding times is rechecked, if rechecking succeeds, 1 is added to the corresponding transportation times, and a path is drawn; according to the method, the problem of errors caused by manual recording or a single sensor traditionally is solved, the statistical accuracy under complex working conditions is improved, and meanwhile transportation efficiency optimization and energy consumption management are supported.

Description

Technical Field

[0001] The present invention relates to the technical field of electric mining vehicles, in particular to a method for counting the number of transport trips of a pure electric mining dump truck. Background Art

[0002] In actual mining operations, dump trucks primarily load and unload cargo, with billing calculated on a per-trip basis. For fleet management, tracking each truck's daily, monthly, and even annual transport volume is crucial for evaluating and managing the vehicles and drivers. Currently, manual data recording and statistics for dump trucks in mining areas are performed, resulting in low automation and prone to errors. Furthermore, this method is susceptible to subjective factors and lacks real-time synchronization with cloud-based big data, making it incapable of supporting refined operational management (such as single-trip energy consumption analysis and route optimization). Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a method for counting the number of transport trips of pure electric mining dump trucks. The present invention solves the error problem caused by traditional reliance on manual recording or a single sensor, improves the statistical accuracy under complex working conditions, and supports transportation efficiency optimization and energy consumption management.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a method for counting the number of transport trips of a pure electric mining dump truck, comprising the following steps:

[0005] Step 1: Determine the initial conditions for unloading. If it is determined to be unloading, proceed to step 2.

[0006] Step 2: Determine whether the unloading is valid based on the first unloading validity condition and the second unloading validity condition. If valid, proceed to step 3.

[0007] Step 3: Review the unloading validity of the corresponding trip. If the review is successful, add 1 to the corresponding transport trip and draw the route.

[0008] As a further improvement of the present invention, in step 1, the initial conditions for determining unloading specifically include:

[0009] (1) The gear position of the transmission system is neutral;

[0010] (2) The handbrake switch is in the handbrake state;

[0011] (3) Turn on the power take-off switch, the gear of the transmission system automatically switches to the parking power take-off gear, the drive motor starts to operate at a constant speed, and the parking power take-off mechanism of the transmission system drives the hydraulic oil pump to work, providing hydraulic power for lifting the cargo compartment to unload;

[0012] (4) The tilt and reset switch is set to the tilt switch position, the hydraulic system works, and the unloading operation begins; after unloading is completed, the tilt and reset switch is set to the reset switch position, and the cargo compartment is reset.

[0013] As a further improvement of the present invention, in step 2, the first unloading validity condition is specifically as follows:

[0014] The loading and unloading events are determined by identifying the vehicle load mutation detection algorithm. When the load change rate exceeds the preset threshold and the duration is consistent with the loading and unloading cycle, it is marked as a loading and unloading action.

[0015] As a further improvement of the present invention, in step 2, the second unloading validity condition is specifically as follows:

[0016] The drive motor current waveform is analyzed to verify the validity of the loading and unloading events. If the motor power shows a cyclical change during the load mutation period, from resetting the cargo compartment to lifting the cargo compartment with a full load, and then resetting the cargo compartment to empty, it is determined to be a valid transportation cycle.

[0017] As a further improvement of the present invention, the step 3 is specifically as follows:

[0018] The transportation route interval is delineated based on the electronic fence of the mining area, and the positioning data is used to determine whether the vehicle has completed a complete round trip from the loading area to the unloading area, thereby verifying the validity of the transportation trips.

[0019] As a further improvement of the present invention, the transport path section includes a loading area, an unloading area and a driving path.

[0020] As a further improvement of the present invention, it also includes:

[0021] Combined with the specifications of the vehicle cargo compartment, the total transportation output in each time period is counted.

[0022] This method integrates vehicle-mounted sensor data, unloading switch actions, and mining geo-fencing technology, combined with a dynamic threshold determination algorithm, to accurately count transport trips. The method includes real-time data collection of vehicle load, motor current, location coordinates, and power take-off (PTO) switch actions during unloading operations; detecting sudden changes in load and analyzing motor power changes to determine loading and unloading events; demarcating transport routes using mining geo-fencing to dynamically calibrate trip thresholds; and finally, using a cloud-based algorithm to correct abnormal data and output statistical results.

[0023] In addition, the method for counting the number of transport trips of the present invention is that the VCU collects the sensor status, switch status, motor status and gearbox status required by the vehicle end, and uploads them to the Internet monitoring platform. The monitoring platform sets an intelligent algorithm to realize intelligent statistics of the number of transport trips of each vehicle, and can automatically derive the number of transport trips in each time period and intuitively display it to the fleet management personnel; at the same time, combined with the specifications of the vehicle cargo compartment, the total transport output in each time period is counted.

[0024] The beneficial effects of the present invention are:

[0025] The method for counting the number of transport trips of pure electric mining dump trucks of the present invention can realize automatic statistics on the Internet platform and export business analysis reports, realize fully automated statistics and analysis report generation, and provide basic data support for fleet management and production optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Flowchart of a method for calculating trip statistics of an Internet monitoring platform according to an embodiment of the present invention;

[0027] Figure 2 This is a diagram of the electric brake system architecture of a pure electric mining dump truck in an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Weighing sensor; 2. Handbrake switch; 3. Tilt sensor; 4. Power take-off switch; 5. Accelerator pedal; 6. Tilt and reset switch; 7. Vehicle controller VCU; 8. Drive motor controller MCU; 9. On-board terminal; 10. Transmission system; 11. Drive motor; 12. Hydraulic oil pump. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown in the figure, a statistical method for the number of transport trips of pure electric mining dump trucks is used to automatically count and export business analysis reports through an Internet platform, eliminating manual statistics, reducing labor costs, and improving the level of automation.

[0033] The method for counting the number of transport trips of mining dump trucks provided in this embodiment includes two parts: a vehicle-side control system and an Internet monitoring platform algorithm.

[0034] like Figure 2As shown, the vehicle-side control system includes a weighing sensor 1, a handbrake switch 2, a tilt sensor 3, a power take-off switch 4, an accelerator pedal 5, a tilt and reset switch 6, a vehicle controller VCU 7, a drive motor controller MCU 8, an on-board terminal 9, a drive motor 11, a transmission system 10, and a hydraulic oil pump 12. The following table explains the terms of some components:

[0035]

[0036] The vehicle controller (VCU) is the core of the control system, collecting signals from various sensors and switches, analyzing the driver's control intentions, and controlling the vehicle's parking and movement, as well as lifting the cargo compartment to unload cargo.

[0037] The vehicle-mounted terminal has a satellite positioning function and transmits the vehicle status information and location information received from the VCU to the Internet monitoring platform through an unmanned network.

[0038] The weighing sensor is used to weigh the weight of the cargo loaded in the cargo compartment.

[0039] The tilt sensor is installed on the cargo box of the mining dump truck and is used to detect the state of the cargo box tipping over and resetting.

[0040] The transport trip statistics algorithm of the Internet monitoring platform includes:

[0041] Step 1: When the platform receives the handbrake switch signal, power take-off signal, and tilt and reset switch signal that meet the unloading conditions, it starts to determine whether the unloading action is valid;

[0042] Step 2: Determine loading and unloading events by identifying vehicle load mutation detection algorithms. When the load change rate exceeds the preset threshold and the duration is consistent with the loading and unloading cycle, it is marked as a loading and unloading action.

[0043] Step 3: Verify the validity of the loading and unloading events by analyzing the drive motor current waveform. If the motor power exhibits a cyclical change during the load change period: "empty cargo compartment reset → fully loaded cargo compartment lift → empty cargo compartment reset," it is considered a valid transport cycle.

[0044] Step 4: Delineate the transport route intervals (such as loading area, unloading area, and driving route) based on the mining area’s electronic fence. Use positioning data to determine whether the vehicle has completed a complete round trip from the loading area to the unloading area to verify the validity of the above transport trips.

[0045] Example 2

[0046] like Figure 1 and Figure 2 As shown, a method for counting the number of transport trips of a pure electric mining dump truck includes a vehicle-side control system and an Internet monitoring platform algorithm.

[0047] The vehicle-side control system includes a weighing sensor 1, a handbrake switch 2, a tilt sensor 3, a power take-off switch 4, an accelerator pedal 5, a tilt and reset switch 6, a vehicle controller VCU 7, a drive motor controller MCU 8, an on-board terminal 9, a transmission system 10, a drive motor 11, and a hydraulic oil pump 12.

[0048] When the transmission system 10 is in forward or reverse gear and the driver presses the accelerator pedal 5, the vehicle control unit (VCU) 7 recognizes the driver's intention to move the vehicle. It then sends a drive torque command to the drive motor controller MCU8. MCU8 controls the drive motor 11, transferring power to the vehicle's wheels through the transmission system 10, thereby driving the vehicle. While the vehicle is moving, the onboard terminal 9 can upload the vehicle's location and longitude information in real time to an internet monitoring platform, which can then plot the trip's path.

[0049] When the vehicle is loaded with goods and needs to be unloaded at the unloading point, the driver's operation steps are as follows:

[0050] Step 1: Set the transmission system 10th gear position to neutral;

[0051] Step 2: Pull up the handbrake, and the handbrake switch 2 is in the handbrake state;

[0052] Step 3: Turn on the power take-off switch 4, the gear of the transmission system 10 automatically switches to the parking power take-off gear, and then the drive motor 11 starts to operate at a constant speed. The parking power take-off mechanism of the transmission system 10 drives the hydraulic oil pump 12 to work, providing hydraulic power for lifting the cargo compartment to unload.

[0053] Step 4: Set the tilting and reset switch 6 to the tilting switch position, the hydraulic system works, and the unloading operation begins; after unloading is completed, set the tilting and reset switch 6 to the reset switch position, and the cargo compartment is reset.

[0054] During the unloading process, VCU7 sends the collected information on the gear position of the transmission system 10, the handbrake switch 2, the power take-off switch 4, the tilt and reset switch 6, the weighing sensor 1, the status of the drive motor 11, the power line current of MCU8, and the longitude and latitude of the vehicle position to the on-board terminal in real time. The on-board terminal then uploads the information to the Internet monitoring platform in real time as the basic information for the trip statistics algorithm.

[0055] The algorithm for counting trips on the Internet monitoring platform is as follows:

[0056] Step 1: When the platform receives the handbrake switch signal, power take-off signal, and tilt and reset switch signal that meet the unloading conditions, it starts to determine whether the unloading action is valid;

[0057] Step 2: Determine loading and unloading events by identifying vehicle load mutation detection algorithms. When the load change rate exceeds the preset threshold and the duration is consistent with the loading and unloading cycle, it is marked as a loading and unloading action.

[0058] Step 3: Verify the validity of the loading and unloading events by analyzing the drive motor current waveform. If the motor power exhibits a cyclical change from "no load → full load → no load" during the load mutation period, it is determined to be a valid transportation cycle.

[0059] Step 4: Delineate the transport route intervals (such as loading area, unloading area, and driving route) based on the mining area’s electronic fence. Use positioning data to determine whether the vehicle has completed a complete round trip from the loading area to the unloading area to verify the validity of the above transport trips.

[0060] Step 5: When all the above conditions are met, the number of transport trips is increased by 1, and the completed path of this trip is drawn based on the longitude and latitude signals of the location of the trip.

[0061] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A method for counting the number of transport trips of a pure electric mining dump truck, characterized in that: The following steps are involved: Step 1: Determine the initial conditions for unloading. If it is determined to be unloading, proceed to step 2. Step 2: Determine whether the unloading is valid based on the first unloading validity condition and the second unloading validity condition. If valid, proceed to step 3. Step 3: Review the unloading validity of the corresponding trip. If the review is successful, add 1 to the corresponding transport trip and draw the route.

2. The method for counting the number of transport trips of a pure electric mining dump truck according to claim 1 is characterized in that: In step 1, the initial conditions for determining unloading specifically include: (1) The gear position of the transmission system is neutral; (2) The handbrake switch is in the handbrake state; (3) Turn on the power take-off switch, the gear of the transmission system automatically switches to the parking power take-off gear, the drive motor starts to operate at a constant speed, and the parking power take-off mechanism of the transmission system drives the hydraulic oil pump to work, providing hydraulic power for lifting the cargo compartment to unload; (4) The tilt and reset switch is set to the tilt switch position, the hydraulic system works, and the unloading operation begins; after unloading is completed, the tilt and reset switch is set to the reset switch position, and the cargo compartment is reset.

3. The method for counting the number of transport trips of a pure electric mining dump truck according to claim 1, characterized in that: In step 2, the first unloading validity condition is as follows: The loading and unloading events are determined by identifying the vehicle load mutation detection algorithm. When the load change rate exceeds the preset threshold and the duration is consistent with the loading and unloading cycle, it is marked as a loading and unloading action.

4. The method for counting the number of transport trips of a pure electric mining dump truck according to claim 1 or 3, characterized in that: In step 2, the second unloading validity condition is as follows: The drive motor current waveform is analyzed to verify the validity of the loading and unloading events. If the motor power shows a cyclical change during the load mutation period, from resetting the cargo compartment to lifting the cargo compartment with a full load, and then resetting the cargo compartment to empty, it is determined to be a valid transportation cycle.

5. The method for counting the number of transport trips of a pure electric mining dump truck according to claim 4 is characterized in that: The step 3 is specifically as follows: The transportation route interval is delineated based on the electronic fence of the mining area, and the positioning data is used to determine whether the vehicle has completed a complete round trip from the loading area to the unloading area, thereby verifying the validity of the transportation trips.

6. The method for counting the number of transport trips of a pure electric mining dump truck according to claim 5, characterized in that: The transport path section includes a loading area, an unloading area and a driving path.

7. The method for counting the number of transport trips of a pure electric mining dump truck according to claim 1, characterized in that: Also includes: Combined with the specifications of the vehicle cargo compartment, the total transportation output in each time period is counted.

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