Sensor-Fused Sprayer Module for Lawn Technician Path Tracking
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Solution Overview
Problem
Existing systems lack effective methods for monitoring and evaluating the performance of lawn-care technicians, particularly in terms of application path and spray patterns, which are crucial for quality assurance in lawn treatment processes.
Innovation Solution
A Technician Performance Module (TPM) equipped with sensors such as GPS, gyroscope, accelerometer, and compass is affixed to lawn-care devices like sprayers and spreaders, collecting and transmitting data to a control box for analysis, providing Key Performance Indicators (KPIs) on application path, spray patterns, and motion-path estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a Technician Performance Module with multiple sensors is installed on lawn-care devices to monitor application path and spray patterns, then measurement precision and quality assurance are improved, but device complexity and installation time increase
Solution Approach 1:
The patent combines GPS receiver, gyroscope, accelerometer, compass, and barometer into a single integrated Technician Performance Module that attaches to the sprayer. This merging of multiple sensors into one unit improves measurement precision for application path tracking while managing device complexity through consolidation rather than multiple separate components.
Solution Approach 2:
The TPM is designed as a multi-functional device that simultaneously performs location tracking via GPS, orientation measurement via gyroscope and compass, motion detection via accelerometer, and altitude measurement via barometer. This universal module handles multiple measurement functions that would otherwise require separate devices, improving overall measurement precision without proportionally increasing complexity.
2Measurement precision
If multiple sensors are integrated into the TPM to track motion-path and spray patterns, then measurement precision is improved, but ease of manufacture and installation are worsened
Solution Approach 1:
The patent integrates multiple sensors (GPS, gyroscope, accelerometer, compass, barometer) into a single TPM unit that can be manufactured as one assembly. This merging approach improves spray pattern measurement precision through comprehensive data collection while managing manufacturing complexity by consolidating components into a single manufacturable unit rather than multiple separate devices.
Solution Approach 2:
The TPM is designed to be self-contained with internal processing capabilities that analyze sensor data locally. The module autonomously calculates application path, spray pattern metrics, and motion characteristics without requiring external processing equipment, thereby improving measurement precision while simplifying the overall system manufacturing and installation.
3Loss of information
If continuous wireless data transmission is implemented from the TPM, then information availability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic wireless data transmission where the TPM sends collected sensor data and calculated metrics at predetermined time intervals rather than continuously. This periodic transmission approach maintains information availability by regularly updating data while significantly reducing energy consumption compared to continuous transmission, extending battery operation time.
Solution Approach 2:
The system incorporates feedback mechanisms where the TPM monitors its own energy levels and adjusts transmission frequency accordingly. When battery charge is high, transmission occurs more frequently to maintain complete information flow. When energy is low, transmission frequency reduces to conserve power, thereby balancing data completeness with energy conservation dynamically.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The TPM system accurately tracks and evaluates technician performance, enhancing quality assurance by providing actionable metrics for improving lawn treatment efficiency and consistency.
Implementation Method 1
The TPM comprises an embedded Global Positioning System (GPS) chip along with customized embedded firmware use to detect and report the heading (bearing), orientation (direction), and position of the TPM
Implementation Method 2
The TPM comprises an IMU (inertial measurement unit) module, along with other sensors. The IMU module may comprise a compass, one or more gyroscopes, and one or more accelerometers
Implementation Method 3
The TPM comprises an IMU (inertial measurement unit) module, along with other sensors. The IMU module may comprise a compass, one or more gyroscopes, and one or more accelerometers
Implementation Method 4
The TPM comprises an IMU (inertial measurement unit) module, along with other sensors. The IMU module may comprise a compass, one or more gyroscopes, and one or more accelerometers
Implementation Method 5
The TPM comprises a wireless communications chip for wireless communications, but also may include one or more telecommunications ports, such as a USB or similar port
Data Source
AI summary
A system and methods for monitoring and evaluating the performance of a lawn-care technician. A Technician Performance Module (TPM) is affixed to or embedded in a device or apparatus used by the technician, such as a sprayer or a spreader. The TPM comprises a plurality of sensors (e.g., GPS, gyroscope, accelerometer, compass, pedometer) which collect, store, and/or transmit an assortment of data as described below. The data may be transmitted wirelessly to a control box, which may be located in a nearby vehicle, such as a truck used by the technician at the site of the lawn-care services being provided. The data also may be transmitted wireless to a cellular or wireless gateway for transmission to system servers for storage and analysis.