White Paper on Technology and Application of Yuntang Leaf Area Meter

White Paper on Yunteng Leaf Area Meter

Introduction

Leaf area is a key morphological indicator reflecting plant growth and development, photosynthetic efficiency, water use efficiency and stress response. It is widely used in crop cultivation, forestry breeding, horticultural cultivation, ecological monitoring and other fields. Traditional leaf area measurement methods mainly include the grid paper method, weighing method and others, which are cumbersome, time-consuming and subject to large human errors, making it difficult to meet the efficient detection requirements of modern agricultural and forestry scientific research and production.

Based on the actual needs of domestic agricultural and forestry detection, Shandong Yunteng Intelligent Technology Co., Ltd. independently developed a series of leaf area meter products. With high-precision sensing technology, intelligent algorithms and user-friendly design, the instruments realize rapid and non-destructive detection of leaf area, perimeter, length-width ratio, shape factor and other indicators. This white paper systematically introduces the product information, technical parameters, application scenarios, operating specifications and maintenance requirements of Yunteng leaf area meters, providing a professional basis for user selection, operation and management, and helping to improve the quality and efficiency of scientific research monitoring and production management in the agricultural and forestry sectors.

Table of Contents

Basic Product Information

Core Technologies and Functional Features

Detailed Technical Parameters

Application Scenarios

Accessories and Consumables

Model Comparison

Installation Steps

Operating Steps

Sample Testing

Maintenance Specifications

Corporate Strength

Product System

White Paper Summary

Basic Product Information

Product Name: Leaf Area Meter

Manufacturer: Shandong Yunteng Intelligent Technology Co., Ltd.

Product Purpose: For rapid and non-destructive measurement of plant leaf parameters such as area, perimeter, length, width, length-width ratio and shape factor. Suitable for on-site and laboratory detection of various plant leaves.

Product Positioning: Providing accurate, efficient and portable leaf area detection solutions for users including agricultural and forestry research institutes, agricultural technology extension centers, university laboratories, planting bases, nurseries and ecological monitoring stations.

Product Introduction:

Yunteng leaf area meter adopts high-definition photoelectric scanning sensing technology combined with intelligent image processing algorithms, which can complete single-leaf measurement within seconds without cutting or damaging the leaf structure, realizing in-vivo non-destructive detection.

The instrument is equipped with a large-capacity storage module, supporting real-time data storage, viewing and export, and can be connected to a computer for data statistics and analysis. The whole machine features a lightweight and portable design with long battery life, adapting to complex environments such as field mobile detection and in-situ field monitoring. With a simple and easy-to-understand operation interface, the instrument can be quickly mastered without professional training. It features high measurement accuracy and strong stability, and the data meets national standard testing requirements, making it an essential device for modern agricultural and forestry scientific research and production monitoring.

Core Technologies and Functional Features

High-Precision Photoelectric Sensing Technology

Adopting high-resolution linear scanning sensors with a uniform light source system to avoid measurement errors caused by uneven illumination. The area measurement accuracy reaches ±1%, ensuring authentic and reliable data.

Non-Destructive and Rapid Detection

No need to pick or cut leaves, enabling in-situ detection of leaves on living plants. Single-leaf measurement time ≤ 1 second, greatly improving detection efficiency.

Simultaneous Multi-Indicator Measurement

Measures multiple indicators including leaf area, perimeter, length, width, length-width ratio, shape factor and rectangular area in one run, meeting multi-dimensional analysis needs.

Intelligent Data Processing

Built-in microprocessor and professional algorithms automatically eliminate background interference, optimize edge recognition, reduce human operation errors, and ensure accurate and traceable data.

Large-Capacity Storage and Export

Supports storage of tens of thousands of measurement data sets. Data can be exported to a computer via a USB interface and saved in Excel format for subsequent statistical analysis.

Portable and Long-Lasting Design

Lightweight structure with a built-in rechargeable lithium battery, providing more than 8 hours of continuous operation, suitable for off-grid scenarios such as fields, mountains and fields.

Wide Adaptability

Capable of measuring irregularly shaped leaves, suitable for dry/wet and thin/thick leaves with strong adaptability to leaf color differences, and applicable to a wide range of crops.

Direct Factory Supply and Comprehensive After-Sales Service

As a source manufacturer, Yunteng offers products with outstanding cost performance. The products are under national warranty with over 100 service outlets and 24-hour technical support to ensure stable equipment operation.

Detailed Technical Parameters

(Taking Yunteng YMJ-S Leaf Area Meter as an example)

Measurement parameters: leaf area, perimeter, length, width, length-width ratio, shape factor

Area measurement accuracy: ±1%

Maximum measurement width: ≤220mm

Maximum measurement length: unlimited (continuous scanning)

Resolution: 0.01cm²

Response time: ＜1 second

Display: high-definition LCD screen

Power supply: built-in lithium battery, 3-hour charging, ≥8 hours of continuous operation

Interface type: USB2.0

Operating temperature: 0℃～50℃

Operating humidity: ≤85% RH, non-condensing

Net weight: approx. 0.8kg

Housing material: ABS engineering plastic, drop-resistant and wear-resistant

Application Scenarios

Crop Cultivation Management

Used for growth monitoring of wheat, rice, corn, cotton, vegetables and other crops, evaluating the effects of fertilization, irrigation and plant protection measures on leaf development, and guiding scientific planting.

Forestry and Horticultural Research

Suitable for leaf measurement of seedlings, flowers, fruit trees and shrubs, assisting in variety breeding, growth evaluation and stress resistance research (drought, diseases and pests, salinity).

Universities and Research Institutions

Provides experimental data for disciplines such as plant physiology, ecology, agronomy and forestry, supporting research projects and thesis data collection.

Ecological Environment Monitoring

Used for ecosystem surveys of grasslands, wetlands and woodlands, analyzing changes in vegetation coverage and leaf area index, and assessing ecological health.

Agricultural Technology Extension and Grassroots Detection

Adapted for grassroots agricultural stations, planting cooperatives and family farms to carry out rapid detection and improve the refined management level of agricultural production.

Protected Agriculture Monitoring

Real-time monitoring of crop leaf growth in greenhouses and plastic tunnels, optimizing environmental control and cultivation management plans.

Accessories and Consumables

Standard Accessories

Main unit ×1

Lithium battery ×1

Power adapter ×1

USB data cable ×1

Product manual ×1

Certificate of conformity & warranty card ×1 set

Optional Accessories

Portable instrument case

Spare lithium battery

U disk with data management software

Calibration standard plate

Cleaning brush and wiping cloth

Model Comparison

Yunteng leaf area meter includes multiple models such as YMJ-A, YMJ-B, YT-YMJ03, YMJ-P2 and YMJ-S, with clear positioning and reasonable functional gradients.

YMJ-A: priced at 4,000 RMB, fully equipped with basic functions to meet grassroots routine detection needs;

YMJ-B: priced at 5,100 RMB, with slightly improved measurement accuracy and storage capacity, suitable for small laboratories;

YT-YMJ03: priced at 7,000 RMB, faster scanning speed and supports more measurement indicators;

YMJ-P2: priced at 8,000 RMB, enhanced battery life for long-term field operations;

YMJ-S: priced at 6,200 RMB, balanced comprehensive performance, high accuracy and strong portability, the mainstream model in the market.

Compared with other brands of similar equipment, Yunteng models provide higher measurement accuracy, stronger stability and a more complete after-sales system at the same price. Users can flexibly select models according to their budget and detection requirements.

Installation Steps

Unpacking Inspection

Take out the main unit and accessories, check for intact appearance and complete accessories, and confirm no transport damage.

Battery Installation and Charging

Insert the lithium battery into the host battery compartment, connect the power adapter for charging, and disconnect the power supply after fully charged.

Accessory Connection

To connect to a computer, insert one end of the USB data cable into the host interface and the other end into a computer USB port.

Power-On Self-Test

Press the power switch; the device automatically performs a self-test program. After self-test completion, it enters the main interface for normal use.

Software Installation (Optional)

Install the data management software on a computer, follow the prompts to complete driver installation, and realize data export and analysis.

Operating Steps

Power-On Preparation

Press the power button to turn on the instrument, wait for system initialization to complete, and enter the measurement main interface.

System Calibration

For first use or long-term non-use, calibrate the instrument with a calibration plate to ensure measurement accuracy, and save parameters after calibration.

Leaf Placement

Place the leaf to be tested flat on the scanning platform, ensuring full expansion without wrinkles or folding, and avoid blocking the scanning area.

Start Measurement

Press the measurement key; the device automatically completes scanning and data calculation, with real-time display of results on the screen.

Data Storage

The system automatically stores data after measurement. Manual naming or numbering is available for later query.

Continuous Measurement

Remove the current leaf, place the next one, and repeat the measurement. The instrument supports continuous rapid detection.

Data Viewing and Export

Historical data can be viewed directly on the host. Connect to a computer via USB cable to export data to Excel for statistics.

Shutdown Operation

After measurement, long-press the power button to shut down the device.

Sample Testing

Sample Requirements

Leaves shall be intact without damage or insect holes. Clean dust and water stains on the leaf surface before measurement to avoid affecting scanning accuracy.

Conventional Leaf Detection

Lay the leaf flat on the scanning area and start measurement. The system automatically identifies the leaf contour and outputs indicators such as area and perimeter.

Small-Size Leaf Detection

Tiny leaves can be measured in a concentrated flat layout without overlapping to ensure accurate single measurement data.

Large-Size Leaf Detection

Extra-long leaves can be scanned in sections; the device automatically splices data to ensure complete measurement results.

In-Vivo Leaf Detection

No need to pick leaves; directly place the plant leaf gently on the scanning platform for measurement to realize non-destructive monitoring.

Data Repeatability Verification

Repeated measurement of the same sample confirms good equipment stability when data deviation is within the allowable accuracy range.

Exception Handling

If the measurement deviation is large, check the leaf placement, recalibrate the instrument and measure again.

Maintenance Specifications

Daily Cleaning

After each use, clean dust on the scanning platform with a cleaning brush and gently wipe the surface with a special cloth. Do not use corrosive cleaners.

Storage Environment

Store the device in a dry, ventilated and light-proof environment, away from high temperature, humidity and strong magnetic fields to prevent component damage.

Battery Maintenance

When not in use for a long time, charge and discharge the battery once a month to maintain battery activity and avoid damage caused by over-discharge.

Anti-Collision

As a precision electronic device, avoid dropping, squeezing or collision during use and transportation.

No Unauthorized Disassembly

The interior contains precision sensing components. Disassembly by non-professionals is prohibited. Contact Yunteng official after-sales service for maintenance.

Regular Calibration

System calibration is recommended every 3 months to maintain stable measurement accuracy.

Software Update

Update the data management software in a timely manner to obtain better data processing functions.

Corporate Strength: Authoritative Qualifications, Solid Quality Foundation

Shandong Yunteng Intelligent Technology Co., Ltd. is a national high-tech enterprise, a provincial-level "Specialized, Sophisticated, Unique and New" enterprise and an innovative small and medium-sized enterprise in Shandong Province. The company has established a complete quality management and credit service system with multiple national authoritative certifications, and is a leading manufacturer in the industry with complete qualifications, advanced technology and reliable services.

Core Management System Certifications

ISO9001 Quality Management System Certification (Certificate No.: 19923Q02085R1S)

Occupational Health and Safety Management System Certification (Certificate No.: 19924S00175R0S)

Environmental Management System Certification (Certificate No.: 19924E00187R0S)

3A Credit and Service Certifications

AAA Enterprise Credit Rating Certification (Certificate No.: ZSTD17622455399061)

AAA Enterprise Credit Worthiness Rating Certification (Certificate No.: ZSTD17622455399064)

AAA Honest Operation Demonstration Unit (Certificate No.: ZSTD17622455399060)

AAA Quality and Service Integrity Unit (Certificate No.: ZSTD17622455399062)

AA Enterprise Observing Credit and Keeping Promises (Certificate No.: ZSTD17622455399068)

The company has a professional R&D team of more than 100 people and 150 core technology patents, continuously iterating detection technologies. It has established more than 100 after-sales service outlets nationwide with national warranty and 24-hour rapid response. Products strictly comply with national testing standards such as GB/T 5009, ensuring compliant and traceable data.

Product System: Full-Scenario Coverage, Precise Demand Matching

Focusing on diverse scenarios such as grassroots rapid detection, medium-sized enterprises, special sampling inspection and mobile detection, Yunteng leaf area meter has created a product matrix of cost-effective, high-performance and high-precision models. Core models have clear parameters and functions to meet different budget and detection needs. Covering from basic entry-level to high-end professional models, the series adapts to various users including university laboratories, grassroots agricultural stations, large planting bases and ecological monitoring institutions, realizing accurate measurement and efficient application, and providing localized and high-quality detection solutions for China’s agricultural and forestry industry.

White Paper Summary

Based on advanced photoelectric sensing and intelligent algorithms, Yunteng leaf area meter realizes rapid, non-destructive and accurate detection of plant leaf area indicators, effectively solving the problems of low efficiency, large errors and cumbersome operation of traditional measurement methods. The product features high accuracy, strong stability, portability, durability and easy operation, widely covering agriculture, forestry, scientific research, ecology and other application scenarios to meet the differentiated detection needs of different users.

As a national high-tech enterprise, Yunteng provides a solid guarantee for product quality and user experience with authoritative qualifications, strong R&D strength and a comprehensive after-sales service system. This white paper comprehensively sorts out product information, technical parameters, operating procedures and maintenance specifications, providing professional guidance for user selection and operation, and promoting the development of intelligent, efficient and accurate detection in the agricultural and forestry sectors.