Alarm method for a mine car protection device

Abstract

The present application is suitable for the technical field of mine vehicle detection, and provides a mine vehicle protection device alarm method, which comprises the following steps: obtaining data of various parameters through sensors and an ECU, and determining whether the data of the parameters exceeds the corresponding safety threshold through a random sampling method of the parameters; if yes, sending an alarm prompt to the driver; and if no, displaying the data of all the parameters. The random sampling method of the parameters is used to determine whether the data of each parameter exceeds the safety threshold, which can solve the parameter fine adjustment of different vehicles or even the same vehicle under different operating conditions, realize the automatic setting of the same type parameter threshold size, and also eliminate the manual parameter setting work steps.

Description

Technical Field

[0001] This invention belongs to the field of mining vehicle detection technology, and in particular relates to an alarm method for a mining vehicle protection device. Background Technology

[0002] Mining truck safety devices are installed on mining trucks to ensure their safe operation. These devices acquire various data related to vehicle safety through sensors and the ECU, displaying this data to the driver in real time. Simultaneously, these data are compared to preset safety thresholds. If a threshold is exceeded, an alarm is triggered, prompting the driver to take immediate action to ensure the safety of personnel and materials. However, because different vehicle models or even the same model operating under different conditions have varying safety thresholds, manual adjustment of these thresholds is necessary when changing vehicle operating conditions or switching vehicle types, increasing labor costs. Summary of the Invention

[0003] The purpose of this invention is to provide an alarm method for a mining truck protection device, aiming to solve the problem that the safety threshold values ​​for relevant data vary depending on the type of vehicle or the operating state of the same vehicle. Therefore, when the vehicle changes its operating state or is switched, the safety thresholds need to be manually adjusted, leading to increased labor costs.

[0004] This invention provides an alarm method for a mine car protection device, the method comprising the following steps:

[0005] Receive the driver's operation command and determine whether the operation command is an empty command;

[0006] If the operation command is an empty command, data of various parameters are obtained through sensors and ECU, and the data of the parameters are determined by random sampling method to determine whether the data of the parameters exceeds their corresponding safety threshold.

[0007] If the limit is exceeded, an alarm will be sent to the driver.

[0008] If the limit is not exceeded, all the data for the parameters will be displayed.

[0009] If the operation instruction is not an empty instruction, then the corresponding operation is performed according to the operation instruction.

[0010] Furthermore, the method of determining whether the data of the parameter exceeds its corresponding safety threshold by random sampling includes:

[0011] The criteria for determining whether sensor and ECU parameters do not exceed the threshold are:

[0012] d 2 ≤t 2 (1)

[0013] In equation (1), the error distance For dimensionless standard parameters, the average value of the sampled parameters is x i The parameter collection samples are for when there is no alarm, and n is the number of samples randomly collected, satisfying the condition that n is not less than 10;

[0014] Threshold squared t 2 This can be derived from the following formula:

[0015]

[0016] In equation (2), α is the prior probability that the threshold is not exceeded, σ is the standard deviation of the Gaussian distribution, and the parameter dimension m is 1.

[0017] Furthermore, before receiving the driver's operation command and determining whether the operation command is an empty command, the following steps are also included:

[0018] After initialization, the sensor performs a self-test to determine whether the sensor is working properly.

[0019] If the sensor is in an abnormal state, an alarm will be issued;

[0020] If the sensor is in normal condition, proceed with ECU communication initialization;

[0021] The system checks the ECU status. If the ECU status is abnormal, an alarm is issued. Otherwise, the system executes the steps described above to receive the driver's operation commands and checks whether the operation commands are empty commands.

[0022] Furthermore, the step of performing the corresponding operation according to the operation instruction includes the following steps:

[0023] Determine if the operation command is an engine shutdown command;

[0024] If it is a shutdown command, control the engine to shut off;

[0025] If it is not an engine shutdown command, then determine whether it is a reset command;

[0026] If it is a reset instruction, the total runtime is cleared and the null instruction judgment process is entered;

[0027] If it is not a reset instruction, then determine whether it is a parameter setting instruction;

[0028] If it is a parameter setting command, the parameters are written to FLASH for storage and the null command judgment process is entered.

[0029] If it is not a parameter setting instruction, then the steps described above are executed. If the operation instruction is an empty instruction, data of various parameters are obtained through sensors and ECU, and the data of the parameters are determined by random sampling method to determine whether the data of the parameters exceeds their corresponding safety threshold.

[0030] Furthermore, the sensor includes a temperature sensor, a concentration sensor, and a liquid level sensor.

[0031] Furthermore, the parameters of the sensor include coolant temperature, engine surface temperature, torque converter oil temperature, brake fluid temperature, exhaust temperature, gas concentration, carbon monoxide concentration, coolant level, and fuel level.

[0032] Furthermore, the ECU parameters include engine speed and vehicle speed.

[0033] Furthermore, the alarm notification includes:

[0034] The system reminds the driver to refuel when the fuel level in the tank is low.

[0035] Remind the driver to take a break if the water temperature is too high;

[0036] When the engine temperature gauge is too high, the driver will be alerted that the engine will be shut down.

[0037] If the gas concentration exceeds the standard, remind the driver to turn off the engine and leave the driver's seat immediately to ensure their own safety.

[0038] The beneficial effects of this invention are:

[0039] This invention provides an alarm method for a mining truck protection device. After acquiring data of various parameters through sensors and ECU, a random sampling method is used to determine whether the data of each parameter exceeds the safety threshold. This method can solve the problem of parameter fine-tuning for different vehicles, or even the same vehicle under different operating conditions, and realize the automatic setting of the threshold size of the same type of parameter, thus eliminating the need for manual parameter setting. Attached Figure Description

[0040] Figure 1 This is a flowchart of the alarm method for the mine car protection device provided in the embodiments of the present invention; Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] The specific implementation of the present invention will be described in detail below with reference to specific embodiments:

[0043] Example:

[0044] This document illustrates the implementation flow of the alarm method for the mine car protection device provided in the embodiments of the present invention. For ease of explanation, only the parts related to the embodiments of the present invention are shown, and are described in detail below:

[0045] S1. After sensor initialization, a self-test is performed.

[0046] S2. Determine if the sensor is working properly;

[0047] S3. If the sensor status is abnormal, an alarm will be issued.

[0048] S4. If the sensor status is normal, perform ECU communication initialization.

[0049] S5. Determine if the ECU status is abnormal;

[0050] S6. If the ECU status is abnormal, issue an alarm; otherwise, proceed to the next step.

[0051] S7. Receive the driver's operation command and determine whether the operation command is an empty command;

[0052] S8. If the operation command is an empty command, data of various parameters are obtained through sensors and ECU, and the data of the parameters are determined by random sampling method to determine whether the data of the parameters exceeds their corresponding safety threshold.

[0053] S9. If the limit is exceeded, an alarm will be sent to the driver.

[0054] S10. If the value is not exceeded, all parameter data will be displayed.

[0055] S11. If the operation command is not an empty command, determine whether the operation command is an engine shutdown command.

[0056] S12. If it is a shutdown command, control the engine to shut down;

[0057] S13. If it is not an engine shutdown command, determine whether it is a reset command.

[0058] S14. If it is a reset instruction, then clear the total running time and proceed to step S7;

[0059] S15. If it is not a reset instruction, determine whether it is a parameter setting instruction;

[0060] S16. If it is a parameter setting command, write the parameters into FLASH and save them before proceeding to step S7.

[0061] S17. If it is not a parameter setting instruction, then proceed to step S7.

[0062] Further, in step S8, the random sampling method for determining whether the parameter data exceeds its corresponding safety threshold includes:

[0063] The criteria for determining whether sensor and ECU parameters do not exceed the threshold are:

[0064] d 2 ≤t 2 (1)

[0065] In equation (1), the error distance For dimensionless standard parameters, the average value of the sampled parameters is x i The parameter collection samples are for when there is no alarm, and n is the number of samples randomly collected, satisfying the condition that n is not less than 10;

[0066] Threshold squared t 2 This can be derived from the following formula:

[0067]

[0068] In equation (2), α is the prior probability that the threshold is not exceeded, σ is the standard deviation of the Gaussian distribution, and the parameter dimension m is 1.

[0069] Furthermore, the sensors include temperature sensors, concentration sensors, and liquid level sensors.

[0070] Furthermore, the sensor parameters include coolant temperature, engine surface temperature, torque converter oil temperature, brake fluid temperature, exhaust temperature, gas concentration, carbon monoxide concentration, coolant level, and fuel level.

[0071] Furthermore, the ECU parameters include engine speed and vehicle speed.

[0072] Furthermore, the alarm prompts include:

[0073] The system reminds the driver to refuel when the fuel level in the tank is low.

[0074] Remind the driver to take a break if the water temperature is too high;

[0075] When the engine temperature gauge is too high, the driver will be alerted that the engine will be shut down.

[0076] If the gas concentration exceeds the standard, remind the driver to turn off the engine and leave the driver's seat immediately to ensure their own safety.

[0077] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An alarm method for a mine car protection device, based on the mine car protection device, characterized in that, The alarm method includes: Receive the driver's operation command and determine whether the operation command is an empty command; If the operation command is an empty command, data of various parameters are obtained through sensors and ECU, and the data of the parameters are determined by random sampling method to determine whether the data of the parameters exceeds their corresponding safety threshold. If the limit is exceeded, an alarm will be sent to the driver. If the limit is not exceeded, all the data for the parameters will be displayed. If the operation instruction is not an empty instruction, then the corresponding operation is performed according to the operation instruction; The random sampling method for determining whether the data of the parameter exceeds its corresponding safety threshold includes: The criteria for determining whether sensor and ECU parameters do not exceed the threshold are: （1） In equation (1), the error distance For dimensionless standard parameters, the average value of the sampled parameters is , The parameter collection samples are for when there is no alarm, and n is the number of samples randomly collected, satisfying the condition that n is not less than 10; Threshold squared This can be derived from the following formula: （2） In equation (2), It is the prior probability that the threshold is not exceeded, where σ is the standard deviation of the Gaussian distribution and the parameter dimension. The value is 1; Before receiving the driver's operation command and determining whether the operation command is an empty command, the following steps are also included: After initialization, the sensor performs a self-test to determine whether the sensor is working properly. If the sensor is in an abnormal state, an alarm will be issued; If the sensor is in normal condition, proceed with ECU communication initialization; The system checks the ECU status. If the ECU status is abnormal, an alarm is issued. Otherwise, it receives the driver's operation command and checks whether the operation command is an empty command.

2. The alarm method for the mine car protection device according to claim 1, characterized in that, The step of performing the corresponding operation according to the operation instruction includes the following steps: Determine if the operation command is an engine shutdown command; If it is a shutdown command, control the engine to shut off; If it is not an engine shutdown command, then determine whether it is a reset command; If it is a reset instruction, the total runtime is cleared and the null instruction judgment process is entered; If it is not a reset instruction, then determine whether it is a parameter setting instruction; If it is a parameter setting command, the parameters are written to FLASH for storage and the null command judgment process is entered; If it is not a parameter setting instruction, then the "if operation instruction is empty" instruction is executed, and data of various parameters are obtained through sensors and ECU, and the data of the parameters are determined by random sampling method to determine whether the data of the parameters exceeds their corresponding safety threshold.

3. The alarm method for the mine car protection device according to claim 1, characterized in that, The sensors include a temperature sensor, a concentration sensor, and a liquid level sensor.

4. The alarm method for the mine car protection device according to claim 3, characterized in that, The parameters of the sensor include coolant temperature, engine surface temperature, torque converter oil temperature, brake fluid temperature, exhaust temperature, gas concentration, carbon monoxide concentration, water tank level, and fuel tank level.

5. The alarm method for the mine car protection device according to claim 1, characterized in that, The ECU parameters include engine speed and vehicle speed.

6. The alarm method for the mine car protection device according to claim 1, characterized in that, The alarm notification includes: The system reminds the driver to refuel when the fuel level in the tank is low. Remind the driver to take a break if the water temperature is too high; When the engine temperature gauge is too high, the driver will be alerted that the engine will be shut down. If the gas concentration exceeds the standard, remind the driver to turn off the engine and leave the driver's seat immediately to ensure their own safety.

Images