Vehicle Remote Control Latency Detection and Notification

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Solution Overview

Problem

Existing remote vehicle control systems face issues with communication latency and errors between vehicles and mobile devices, leading to unintended vehicle movement when the operator is no longer providing input, as the vehicle may continue to perform autonomous functions without proper communication validation.

Innovation Solution

The system employs a communication module that sends diagnostic signals to a mobile device, measures response time, and disables autonomous vehicle movement if the latency exceeds a threshold, sending notifications to the user to investigate and correct potential causes, thereby preventing unauthorized vehicle operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the system continuously monitors communication latency by sending diagnostic signals to the mobile device, then the reliability of remote motive control is improved, but the communication burden and energy consumption increase

Engineering Contradiction:
Improveremote motive control reliabilityVSAvoidcommunication energy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system implements periodic monitoring of communication latency by sending diagnostic signals at intervals rather than continuously. The autonomy unit controller sends diagnostic signals to the mobile device at specific periods during remote motive control operations, measuring response times to detect latency issues while avoiding constant communication overhead and energy consumption.

Inventive Principle:
Principle #19Periodic action

2Object-affected harmful factors

If the system implements strict latency threshold checking to prevent unintended vehicle movement, then the safety is improved, but the productivity of remote motive control operations decreases

Engineering Contradiction:
Improveunintended vehicle movementVSAvoidremote motive control efficiency
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The system establishes a latency threshold before remote motive control operations begin and uses this pre-determined threshold to validate communication responsiveness. By having the threshold ready in advance and using it for quick validation checks, the system prevents unintended vehicle movement while minimizing delays to operational productivity.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Loss of information

If the system sends notifications to the mobile device when latency exceeds threshold, then the information feedback is improved, but the communication overhead increases

Engineering Contradiction:
Improvecommunication status informationVSAvoidcommunication protocol complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The system implements feedback by sending notifications from the autonomy unit controller to the mobile device when measured latency exceeds the established threshold. This feedback mechanism informs the operator of communication issues that may affect remote motive control reliability, allowing the operator to take corrective actions such as moving closer to the vehicle or checking device connectivity.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11195344B2High phone BLE or CPU burden detection and notification
Publication Date: 2021.12.07 FORD GLOBAL TECH LLC
  • US11195344B2 patent drawing
  • US11195344B2 patent drawing
  • US11195344B2 patent drawing

AI summary

Method and apparatus are disclosed for monitoring of communication for vehicle remote motive control. An example vehicle includes an autonomy unit for remote motive control, a communication module, and a controller. The controller is to send a diagnostic signal to and receive a return signal from a mobile device via the communication module, determine a time period between sending of the diagnostic signal and receipt of the return signal, and prevent the autonomy unit from causing vehicle movement responsive to determining the time period is greater than a threshold.