Vehicle Lift Control via CAN Status Interlocks and Blind Spot Checks
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Solution Overview
Problem
Conventional welfare vehicles' lifting equipment poses safety risks due to accidental movement during operation, especially when the vehicle is not properly secured or when other vehicles approach, leading to potential dangers for operators.
Innovation Solution
A vehicle intelligent lifting system utilizing a Controller Area Network (CAN) bus communication system, including a control module that determines the operation of the lifting device based on vehicle information such as speed, gear, and handbrake status, ensuring safe operation and integrating features like remote control, blind spot detection, and diagnostic modules for enhanced safety and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the operator operates the lifting equipment without turning off the vehicle or applying safety measures, then the operation time is saved, but the vehicle may accidentally move and cause danger
Solution Approach 1:
The control module checks vehicle status parameters (speed, gear position, handbrake state) before allowing lifting device operation. This preliminary verification ensures the vehicle is in a safe state (stationary, parking gear, handbrake applied) before the lifting operation begins, preventing accidental movement while enabling quick operation once conditions are met.
Solution Approach 2:
The system continuously monitors vehicle status through the CAN bus and provides real-time feedback to the control module. This feedback mechanism allows the system to dynamically adjust lifting device operation based on current vehicle conditions, preventing operation during movement and alerting operators to safety issues.
2Productivity
If the lifting equipment is operated when other vehicles are approaching, then the operation can proceed without interruption, but it causes big risks to the operator
Solution Approach 1:
The blind spot detection module detects approaching vehicles before the lifting operation begins. The control module receives this advance warning and can prevent or interrupt lifting operations when potential collision risks are detected, allowing operators to take protective actions before danger arises.
Solution Approach 2:
The blind spot detection module acts as an intermediary safety layer between external vehicles and the operator. It detects potential hazards and communicates this information to the control module, which then mediates the lifting operation by preventing or alerting about dangerous conditions.
3Reliability
If the control system continuously monitors vehicle status and operating conditions, then the safety is improved, but the system complexity increases
Solution Approach 1:
The control module serves multiple functions: it controls the lifting device operation, monitors vehicle status parameters, receives blind spot detection signals, and manages safety interlocks. By consolidating these functions in a single control module that communicates through the existing CAN bus, the system achieves comprehensive safety monitoring without proportionally increasing complexity.
Solution Approach 2:
The system utilizes the vehicle's existing CAN bus communication infrastructure for status monitoring, eliminating the need for separate dedicated wiring for each sensor. The control module autonomously evaluates multiple parameters and makes safety decisions without requiring complex external control systems.
Data Source
AI summary
A vehicle intelligent lifting system, configured to be mounted to a vehicle body including an in-vehicle control unit, is provided, including: a control module, in communication with the in-vehicle control unit, configured to obtain a signal from the in-vehicle control unit; a lifting device, in communication with the control module; wherein the control module determines whether to control the lifting device to operate according to vehicle information from the in-vehicle control unit.