Intelligent eddy current function safety control method and system and pure electric mine truck

Abstract

The application discloses an intelligent eddy current function safety control method and system and a pure electric mine truck, and belongs to the technical field of electric mine trucks. The VCU collects data for judgment and intelligent eddy current control. The judgment includes safety protection condition judgment and eddy current exit condition judgment. Through real-time collection of vehicle data by the VCU and analysis of vehicle problems, corresponding intelligent eddy current control logic is taken, compared with traditional manual operation control and a small part of CAN control, problems can be quickly and accurately found and corresponding control logic can be timely taken, and the working safety of the pure electric mine truck is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of electric mining truck technology, specifically an intelligent eddy current functional safety control method, system, and pure electric mining truck. Background Technology

[0002] The demand for pure electric mining trucks is increasing, with users primarily operating in mines where roads are complex and unpredictable. Since users have limited experience with new energy mining trucks, and driving habits for pure electric mining trucks differ somewhat from those for gasoline-powered trucks, inadequate training can lead to driver malfunctions. Therefore, ensuring safe pure electric mining trucks is a major concern for both OEMs and users. A key safety concern is how to guarantee driver safety in emergencies or due to driver error (similar to gasoline-powered trucks). Current technology relies on manual braking in case of malfunctions or user error. However, prolonged use of mechanical brakes can lead to brake pad overheating and brake fade, resulting in insufficient braking capacity, increased operational difficulty, and a higher risk of accidents. Manual operation often struggles to accurately identify and address problems promptly, posing significant safety risks. Summary of the Invention

[0003] 1. The technical problem that the invention aims to solve

[0004] The purpose of this invention is to solve the problem that existing pure electric mining trucks, which rely on manual eddy current control, pose significant safety hazards.

[0005] 2. Technical Solution

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0007] The present invention provides an intelligent eddy current functional safety control method, wherein the VCU collects data, makes judgments, and performs intelligent eddy current control, the judgments including safety protection condition judgments and eddy current exit condition judgments.

[0008] Preferably, the data collected by the VCU includes the transmission, energy feedback lever, throttle opening, brake opening, handbrake status, motor speed, motor torque, vehicle speed, eddy current coil temperature, and the SCU's CAN signal.

[0009] Preferably, the safety protection condition judgment is specifically as follows: when one of the following conditions is met, it is determined that the eddy current is activated and corresponding intelligent eddy current control is performed; when none of the conditions are met, it is determined that the eddy current is not activated. The following conditions are:

[0010] (1) When the gear is in N gear and the vehicle is coasting in neutral, a voice reminder will be given (vehicle speed is greater than the set threshold). The safety factor will be dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake.

[0011] (2) Battery feedback is limited. At this time, if the energy feedback lever is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time, the safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake.

[0012] (3) When the motor overload feedback is restricted, the energy feedback rod is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time. The safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake.

[0013] (4) When the electronic overload feedback is restricted, the energy feedback lever is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time. The safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake.

[0014] (5) Abnormal operation by the user causes the motor to run at overspeed. At this time, the motor is out of control. Pulling up the energy feedback rod or braking depth is effective. The safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake.

[0015] (6) If the user operates abnormally, such as going downhill under heavy load or speeding, the energy feedback lever should be pulled up or the braking depth should be greater than the set threshold, or the vehicle should be speeding to the threshold and there should be no throttle signal. The safety factor should be dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake.

[0016] (7) When the handbrake is effective, the vehicle rolls away. The vehicle speed is greater than the set threshold. The electric eddy current is activated. The safety factor is dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle and brake.

[0017] Preferably, the eddy current exit condition is determined to be met when one of the following conditions is satisfied, and otherwise the eddy current does not exit:

[0018] (1) The vehicle exits the eddy current when its speed is below the set threshold.

[0019] (2) When the accelerator is pressed, the vehicle speed is lower than the set threshold.

[0020] (3) Motor feedback can control vehicle speed and the vehicle speed is below the set threshold.

[0021] Preferably, the intelligent eddy current control further includes dynamically controlling the number of coils and their alternating operation according to the required output torque, specifically:

[0022] Obtain vehicle parameters, including rear axle regenerative torque limit, motor regenerative output limit, battery regenerative torque limit, DC-DC output current, voltage, eddy current coil temperature, current gear, throttle status, brake percentage, and handbrake status.

[0023] Calculate the total torque limit: Rear axle torque capacity = ((smaller of battery output torque and motor output torque and electronic control output torque) - smaller of eddy current output torque));

[0024] Total torque output = Abnormal safety factor * Total torque output;

[0025] The abnormal safety factor is a dynamic adjustment factor of 0.5-1.5 based on the triggering conditions and vehicle speed, throttle, and brake.

[0026] Actual output = Abnormal safety factor * Total torque output;

[0027] Eddy current output: Eddy current output coils 1, 2, 3, and 4 dynamically control the number of coils and their alternating operation according to the required output torque. The coil operating modes are as follows:

[0028] Operating mode 1: Coils 1, 2, 3, and 4 work alternately, and the working time of each coil can be calibrated;

[0029] Operating mode 2: Coils 1, 2, 3, and 4 work alternately in pairs; the working time of each coil can be calibrated.

[0030] Operating mode 3: Coils 1, 2, 3, and 4 work alternately every three, and the working time of the coils can be calibrated;

[0031] Operating mode 4: Coils 1, 2, 3, and 4 are all in operation, and the operating time of the coils can be calibrated.

[0032] Preferably, the intelligent eddy current control further includes the following monitoring process:

[0033] (1) When the number of eddy current activations reaches the set value, the eddy current detection will be automatically activated upon power-up. The detection will detect each of the four coils individually and simultaneously detect the DC-DC current output value. This value will be compared with the deviation value of the activated coil current. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current.

[0034] (2) When the mileage reaches the set value, the power-on system will automatically detect and activate the eddy current detection. The detection will detect the four coils separately and at the same time, it will detect the DC-DC current output value. This value will be compared with the coil current deviation value. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current.

[0035] (3) If the single operation exceeds the set time, the eddy current detection will be automatically activated when the power is turned on. The detection will detect the four coils separately and at the same time, the DC-DC current output value will be detected. This value will be compared with the deviation value of the coil current. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current and perform active safety detection of the eddy current to check whether it is normal.

[0036] (4) When the eddy current is working, it will automatically monitor whether the output is normal based on the relevant current of the DC-DC output. If the output is abnormal, it will maintain and prompt maintenance.

[0037] If any one of the conditions (1), (2), or (3) is met, the detection will be initiated.

[0038] Preferably, it also includes an intelligent voice reminder process, the intelligent voice reminder settings being as follows:

[0039] (1) When the number of eddy current coils turned on is one, set the voice reminder sound and frequency value to 1.0;

[0040] (2) When the number of eddy current coils turned on is two, set the voice prompt sound and frequency value to 2.0;

[0041] (3) When the number of eddy current coils turned on is three, set the voice reminder sound and frequency value to 3.0;

[0042] (4) When the number of eddy current coils is four, set the voice prompt sound and frequency value to 4.0.

[0043] A smart eddy current functional safety control system for a pure electric mining truck, the system being used to execute the above-described method.

[0044] It includes a VCU for collecting and controlling vehicle data, an intelligent voice reminder module for providing voice prompts, and a periodic detection module for detecting eddy currents. Both the intelligent voice reminder module and the periodic detection module are communicatively connected to the VCU.

[0045] A pure electric mining card with intelligent eddy current safety control function, wherein the pure electric mining card adopts the above-mentioned method.

[0046] 3. Beneficial effects

[0047] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0048] This invention discloses an intelligent eddy current functional safety control method. The VCU collects data, makes judgments, and performs intelligent eddy current control. These judgments include safety protection condition judgments and eddy current exit condition judgments. By collecting vehicle data in real time and analyzing vehicle problems through the VCU, corresponding intelligent eddy current control logic is implemented. Compared to traditional manual operation control and limited CAN control, this method can quickly and accurately identify problems and promptly implement appropriate control logic, greatly improving the operational safety of pure electric mining trucks. Attached Figure Description

[0049] Figure 1 This is a simplified flowchart of the method in Embodiment 1.

[0050] Figure 2 This is a schematic diagram of the system structure in Embodiment 2. Detailed Implementation

[0051] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0054] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0055] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] Example 1

[0058] See attached document Figure 1 and Figure 2 This embodiment presents an intelligent eddy current functional safety control method. The VCU collects data, makes judgments, and performs intelligent eddy current control. These judgments include safety protection condition judgments and eddy current exit condition judgments. This method uses the VCU to collect vehicle data in real time and analyze vehicle problems, then adopts corresponding intelligent eddy current control logic. Compared to traditional manual operation control and limited CAN control, this method can quickly and accurately identify problems and promptly implement appropriate control logic, greatly improving the operational safety of pure electric mining trucks.

[0059] The data collected by the VCU includes the transmission, energy feedback lever, throttle opening, brake opening, handbrake status, motor speed, motor torque, vehicle speed, eddy current coil temperature, and the SCU's CAN signal.

[0060] The safety protection condition judgment is specifically as follows: when one of the following conditions is met, it is determined that the eddy current is activated and corresponding intelligent eddy current control is performed; when none of the conditions are met, it is determined that the eddy current is not activated. The following conditions are:

[0061] (1) When the gear is in N gear and the vehicle is coasting in neutral, a voice reminder will be given (if the vehicle speed is greater than a certain threshold (2-10)). The safety factor will be dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle and brake. 1. Advantages: The voice reminder sound and alarm frequency will be dynamically adjusted to remind the operator in advance. If the speed is faster and the operator has not dealt with it or is slow, the electric eddy current will be activated at the same time to provide safety protection in advance, making the whole vehicle safer and the driver more at ease.

[0062] (2) Battery feedback is limited. At this time, if the energy feedback lever is pulled up or the braking depth is greater than the set threshold (5-30) and continues for a certain period of time, the safety factor is dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle and brake. Advantages: Dynamically adjust the voice reminder sound and alarm frequency to remind the operator in advance. If the speed braking is limited and continues for a period of time, and the operator does not handle it or is slow, the electric eddy current will be activated in advance to provide safety protection, making the whole vehicle safer and the driver more at ease.

[0063] (3) When the motor overload feedback is limited, the energy feedback lever is pulled up or the braking depth is greater than the set threshold (5-30) and it is effective for a certain period of time. The safety factor is dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle and brake. Advantages: The voice reminder sound and alarm frequency are dynamically adjusted to remind the operator in advance that the motor overload is limited. If the energy feedback or braking is at the threshold and lasts for a period of time, and the operator does not handle it or is slow, the eddy current will be activated in advance to provide safety protection, making the whole vehicle safer and the driver more at ease.

[0064] (4) When the electronic overload feedback is limited, if the energy feedback lever is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time, the safety factor is dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle, and brake. Advantages: Dynamically adjust the voice reminder sound and alarm frequency to remind the operator in advance. If the energy feedback or braking is at the threshold and continues for a period of time, and the operator does not handle it or is slow, the electric eddy current will be activated to provide safety protection in advance, making the whole vehicle safer and the driver more at ease.

[0065] (5) Abnormal operation by the user causes the motor to run at overspeed. At this time, the motor is out of control. Pulling up the energy feedback rod or braking depth is more than the set threshold (5-30) is effective. The safety factor is dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle and brake. Advantages: Dynamically adjust the voice reminder sound and alarm frequency to remind the operator in advance of misoperation and motor overspeed operation. At the same time, the eddy current is activated to provide safety protection in advance, making the whole vehicle safer and the driver more at ease.

[0066] (6) If the user operates abnormally, such as going downhill under heavy load or speeding, the energy feedback lever will be activated or the braking depth will be greater than the set threshold (5-30). Alternatively, if the vehicle speeds up to the threshold and there is no throttle signal, the safety factor will be dynamically adjusted from 0.5 to 1.5 based on the vehicle speed, throttle, and brake. Advantages: The voice reminder sound and alarm frequency will be dynamically adjusted to remind the operator in advance of any misoperation or speeding. At the same time, the eddy current will be activated to provide early safety protection, making the whole vehicle safer and the driver more at ease.

[0067] (7) The handbrake is effective. If the vehicle rolls away at this time, the vehicle speed is greater than the set threshold. The electric eddy current is activated. The safety coefficient is dynamically adjusted from 0.5 to 1.5 according to the vehicle speed, throttle and brake. Advantages: The voice reminder sound and alarm frequency are dynamically adjusted to remind the operator in advance of any misoperation. If the vehicle rolls away, please pay attention. At the same time, the electric eddy current is activated to provide safety protection in advance, making the whole vehicle safer and the driver more at ease.

[0068] The eddy current exit condition is determined by the following condition: the eddy current exit is considered to be performed if one of the following conditions is met, otherwise the eddy current exit is not performed:

[0069] (1) The vehicle exits the eddy current when its speed is below the set threshold (2-10);

[0070] (2) When the accelerator is pressed, the vehicle speed is lower than the set threshold (2-10);

[0071] (3) Motor feedback can control vehicle speed and the vehicle speed is below the set threshold (2-10).

[0072] The intelligent eddy current control also includes dynamically controlling the number of coils and their alternating operation according to the required output torque, specifically...

[0073] Obtain vehicle parameters, including rear axle regenerative torque limit, motor regenerative output limit, battery regenerative torque limit, DC-DC output current, voltage, eddy current coil temperature, current gear, throttle status, brake percentage, and handbrake status.

[0074] Calculate the total torque limit: Rear axle torque capacity = ((smaller of battery output torque and motor output torque and electronic control output torque) - smaller of eddy current output torque));

[0075] Total torque output = Abnormal safety factor * Total torque output;

[0076] The abnormal safety factor is a dynamic adjustment factor of 0.5-1.5 based on the triggering conditions and vehicle speed, throttle, and brake.

[0077] Actual output = Abnormal safety factor * Total torque output;

[0078] Eddy current output: Eddy current output coils 1, 2, 3, and 4 dynamically control the number of coils and their alternating operation according to the required output torque. The coil operating modes are as follows:

[0079] Operating mode 1: Coils 1, 2, 3, and 4 work alternately, and the working time of each coil can be calibrated;

[0080] Operating mode 2: Coils 1, 2, 3, and 4 work alternately in pairs; the working time of each coil can be calibrated.

[0081] Operating mode 3: Coils 1, 2, 3, and 4 work alternately every three, and the working time of the coils can be calibrated;

[0082] Operating mode 4: Coils 1, 2, 3, and 4 are all in operation, and the operating time of the coils can be calibrated.

[0083] The intelligent eddy current control also includes the following monitoring process.

[0084] (1) When the number of eddy current activations reaches the set value (10-1000), the eddy current detection will be automatically activated upon power-up. The detection will detect each of the four coils individually and simultaneously detect the DC-DC current output value. This value will be compared with the deviation value of the activated coil current. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current.

[0085] (2) When the mileage reaches the set value (1000km-10000km), the eddy current detection will be automatically activated when the power is turned on. The detection will detect the four coils separately and at the same time, the DC-DC current output value will be detected. This value will be compared with the deviation value of the coil current. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current.

[0086] (3) If the single operation exceeds the set time (1000h-10000h), the eddy current detection will be automatically activated upon power-up. The detection will detect each of the four coils individually and at the same time, the DC-DC current output value will be detected. This value will be compared with the deviation value of the coil current. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current and perform active safety detection of the eddy current to check if it is normal.

[0087] (4) When the eddy current is working, it will automatically monitor whether the output is normal based on the relevant current of the DC-DC output. If the output is abnormal, it will maintain and prompt maintenance.

[0088] The detection will be started if any one of the conditions (1), (2), or (3) of the monitoring process is met.

[0089] It also includes an intelligent voice reminder process, the intelligent voice reminder settings are as follows:

[0090] (1) When the number of eddy current coils turned on is one, set the voice reminder sound and frequency value to 1.0;

[0091] (2) When the number of eddy current coils turned on is two, set the voice prompt sound and frequency value to 2.0;

[0092] (3) When the number of eddy current coils turned on is three, set the voice reminder sound and frequency value to 3.0;

[0093] (4) When the number of eddy current coils is four, set the voice prompt sound and frequency value to 4.0.

[0094] Example 2

[0095] This embodiment provides an intelligent eddy current function safety control system for a pure electric mining truck, the system being used in the method described in Embodiment 1.

[0096] It includes a VCU for collecting and controlling vehicle data, an intelligent voice reminder module for providing voice prompts, and a periodic detection module for detecting eddy currents. Both the intelligent voice reminder module and the periodic detection module are communicatively connected to the VCU.

[0097] Example 3

[0098] This embodiment describes a pure electric mining card with intelligent eddy current safety control function, wherein the pure electric mining card adopts the method described in Embodiment 1.

[0099] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A method for intelligent eddy current functional safety control, characterized in that: The VCU collects data for judgment and performs intelligent eddy current control. The judgment includes safety protection condition judgment and eddy current deactivation condition judgment. The data collected by the VCU includes the transmission, energy feedback lever, throttle opening, brake opening, handbrake status, motor speed, motor torque, vehicle speed, eddy current coil temperature, and the SCU's CAN signal. Specifically, the safety protection condition judgment determines that eddy current activation and corresponding intelligent eddy current control is performed when one of the following conditions is met; otherwise, eddy current deactivation is determined when none of the conditions are met. The following conditions are: (1) When the gear is in N gear and the vehicle is coasting in neutral, a voice reminder will be given (the vehicle speed is greater than the set threshold). The safety factor will be dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. (2) Battery feedback is limited. At this time, if the energy feedback lever is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time, the safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. (3) When the motor overload feedback is restricted, the energy feedback rod is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time. The safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. (4) When the overload feedback of the electronic control is restricted, the energy feedback rod is pulled up or the braking depth is greater than the set threshold and remains effective for a certain period of time. The safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. (5) Abnormal operation by the user causes the motor to run at overspeed. At this time, the motor is out of control. Pulling up the energy feedback rod or braking depth is effective. The safety factor is dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. (6) If the user operates abnormally, such as going downhill under heavy load or speeding, the energy feedback lever should be pulled up or the braking depth should be greater than the set threshold, or the vehicle should be speeding to the threshold and there should be no throttle signal. The safety factor should be dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. (7) The handbrake is effective. If the vehicle rolls away and the speed exceeds the set threshold, the electric eddy current will be activated. The safety factor will be dynamically adjusted by 0.5-1.5 according to the vehicle speed, throttle and brake. The intelligent eddy current control also includes dynamically controlling the number of coils and their alternating operation according to the required output torque, specifically... Obtain vehicle parameters, including rear axle regenerative torque limit, motor regenerative output limit, battery regenerative torque limit, DC-DC output current, voltage, eddy current coil temperature, current gear, throttle status, brake percentage, and handbrake status. Calculate the total torque limit: Rear axle torque capacity = ((smallest of battery output torque and motor output torque + smallest of electronic control output torque) (eddy current output torque)). Total torque output = Abnormal safety factor * Total torque output; The abnormal safety factor is a dynamic adjustment factor of 0.5-1.5 based on the triggering conditions and vehicle speed, throttle, and brake. Actual output = Abnormal safety factor * Total torque output; Eddy current output: Eddy current output coils 1, 2, 3, and 4 dynamically control the number of coils and their alternating operation according to the required output torque. The coil operating modes are as follows: Operating mode 1: Coils 1, 2, 3, and 4 work alternately, and the working time of each coil can be calibrated; Operating mode 2: Coils 1, 2, 3, and 4 work alternately in pairs; the working time of each coil can be calibrated. Operating mode 3: Coils 1, 2, 3, and 4 work alternately every three, and the working time of the coils can be calibrated; Operating mode 4: Coils 1, 2, 3, and 4 are all working, and the working time of the coils can be calibrated; The intelligent eddy current control also includes the following monitoring process. (1) When the number of eddy current activations reaches the set value, the eddy current detection will be automatically activated upon power-up. The detection will detect each of the four coils separately and at the same time, the DC-DC current output value will be detected. This value will be compared with the deviation value of the coil current. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current. (2) When the mileage reaches the set value, the power-on system will automatically detect and activate the eddy current detection. The detection will detect the four coils separately and at the same time, it will detect the DC-DC current output value. This value will be compared with the coil current deviation value. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current. (3) If the single operation exceeds the set time, the eddy current detection will be automatically activated when the power is turned on. The detection will detect the four coils separately and at the same time, the DC-DC current output value will be detected. This value will be compared with the coil current deviation value. If it is normal, no report will be made. If the deviation is too large, a voice reminder will be given to check the eddy current and perform active safety detection of eddy current to check whether it is normal. (4) When the eddy current is working, it will automatically monitor whether the output is normal based on the relevant current of the DC-DC output. If the output is abnormal, it will maintain and prompt maintenance. If any one of the conditions (1), (2), or (3) is met, the detection will be initiated.

2. The intelligent eddy current functional safety control method according to claim 1, characterized in that: The eddy current exit condition is determined by the following condition: the eddy current exit is considered to be performed if one of the following conditions is met, otherwise the eddy current exit is not performed: (1) The vehicle exits the eddy current when its speed is below the set threshold; (2) When the accelerator is pressed, the vehicle speed is lower than the set threshold; (3) Motor feedback can control vehicle speed and the vehicle speed is below the set threshold.

3. The intelligent eddy current functional safety control method according to claim 1, characterized in that, It also includes an intelligent voice reminder process, the intelligent voice reminder settings are as follows: (1) When the number of eddy current coils turned on is one, set the voice reminder sound and frequency value to 1.0; (2) When the number of eddy current coils is two, set the voice reminder sound and frequency value to 2.0; (3) When the number of eddy current coils is three, set the voice prompt sound and frequency value to 3.0; (4) When the number of eddy current coils is four, set the voice reminder sound and frequency value to 4.

0.

4. An intelligent eddy current functional safety control system for a pure electric mining truck, characterized in that: The system is used to perform the method according to any one of claims 1-3. It includes a VCU for collecting and controlling vehicle data, an intelligent voice reminder module for providing voice prompts, and a periodic detection module for detecting eddy currents. Both the intelligent voice reminder module and the periodic detection module are communicatively connected to the VCU.

5. A pure electric mining truck with intelligent eddy current safety control function, characterized in that: The pure electric mining card is described using the method described in any one of claims 1-3.

Images