کاربرد وسایل اندازه گیری و سنسور ها در ماشین های کشاورزی

1. کاربرد وسایل اندازه گیری و سنسور ها در ماشین های کشاورزی

2. تراکتور • سرعت پیشروی • میزان لغزش چرخ های محرک • سرعت دورانی محور ها (موتور، PTO، ...) • گشتاور محور های دورانی

3. کمباین • اندازه گیری سرعت و گشتاور محور ها به منظور جلوگیری از بیش باری • اندازه گیری سطح دانه در مخزن • اندازه گیری شدت جریان دانه در نقاله ها و الواتور ها • کنترل هد کمباین • کنترل کمباین های خود تراز • حس کننده اشیاء فلزی • حس کننده اشیاء بزرگ فلزی و غیر فلزی

4. ادوات • نیروهای وارد بر سه نقطه اتصال برای کنترل کشش و ارتفاع • اندازه گیری نیروی کششی در ادوات (دینامومتر) • کنترل تعداد بذر کاشته شده در ماشنهای کاشت • اندازه گیری دبی، فشار و سرعت پیشروی جهت کنترل و تنظیم سمپاش ها

5. فرآوری محصولات • کنترل عوامل محیطی در خشک کنها • اندازه گیری شدت جریان مواد و رطوبت در انتقال مواد • کنترل عوامل محیطی در سرد خانه ها، انبار ها، سیلوها، گلخانه ها و صنعت طیور • کنترل کیفیت محصولات (جداسازی، درجه بندی، بسته بندی و ....)

6. Development of the UCD Single Wheel Tester:An unique, mobile, single wheel tester was developed to measure tractive characteristics of pneumatic tires in-situ. This device is essentially a mobile soil bin which makes it possible to conduct controlled traction tests in field soils (i.e. not remolded soils like used in the laboratory soil bins). This single wheel tester can be used to conduct either constant slip or constant draft tests. During a given test axle load and either slip or draft are controlled and the resultant draft or slip and input torque are measured using a digital data acquisition system. A digital image (Figure 1) and a quick time movie of the device can be found on this web page for more information.

7. Development of an Instrumented Soil Test Device:This device is capable of measuring soil sinkage and shear characteristics as well as penetration resistance. Sinkage and shear data obtained in the field have been used to predict tractive characteristics of radial ply tires. This device is shown inFigure 2.

8. we developed an instrumented tine which could be used as a reference tillage tool to measure the draft of a tillage implement. This reference tillage tool acted as an analog to the tillage implement and its draft requirements in a given soil represented a composite, dynamic, soil cutting parameter. We were able to relate the draft requirements of this instrumented analog tillage tool to various tillage implements (moldboard plow, subsoiler, and a lister) working in several different soil conditions. Recently, we have modified this device and retrofitted it with a Differential Global Positioning System (DGPS) and a moisture sensor to come of with a soil texture/compaction sensor. The basic principle behind this device is that the cutting resistance of a reference tillage tool (i.e. a tillage tool of known geometry) depends on the speed and depth of operation, soil bulk density, texture, and moisture content. If the speed and depth of operation are controlled and the moisture content is independently measured, then it is possible to estimate an index termed texture/compaction index (TCI) which depends on soil texture and compaction level (bulk density). Filed tests conducted in Yolo loam and Capay clay soil have confirmed this hypothesis. We are planning to use this device to map the variability in TCI values in a field to provide a valuable layer of information for use in the precision vegetable production system

9. Development of a Tomato Yield/Load Monitor:have developed a continuous mass flow type yield monitor for bulk crops such as tomatoes. This device works reasonably well for determining tomato truck load as well as mapping tomato yield. The location of the yield monitor is shown inFigure 4and inFigure 5.

11. ALMACO’s custom Window’s based “smart” software allows the quick and user friendly planter setup • Rugged, environmental friendly, touch screen hardware • Inputs for plot length, alley length, seed spacing, seed count and planting speed • Displays actual seed count and spacing per row • Quick adjustment of seed counts and plot lengths allows for simple planters setup – no mechanical adjustments • Adjustable settings for no seed alarms • Multiple programmable populations for changing populations on-the-go • Planting data storage and download • VGA monitor outputs for display of info in the tractor

12. The STI LPU-2127 Ultrasonic Level sensor uses ultrasonic technology to provide a non-contact method of determining distance or level measurements. STIUltrasonic Level Sensorsare designed for tank/bin continuous level measurement and environmental monitoring, the LPU-2127's versatility, low maintenance and non-contact operation makes it ideal for a variety of applications and harsh environments. The LPU-2127 STI Ultrasonic Level Sensors are not affected by the color/translucency, dielectric constant, specific gravity or viscosity of the target