Development of Cassava Grating Machine: A Dual-Operational Mode


Abstract

Design of a Cassava grating machine which has two modes of operation was made. It can be powered either electrically or manually. It takes care of power failure problems, and can be used in rural settlements where electricity supply is not in existence. Cassava is fed with the Machine through the hopper made of metal sheet to the granting drum, which rotates at a constant speed. This process grates the cassava into cassava pulp. The chute constructed of metal sheet accepts the pulp and send it out because of its inclination which operated manually, the efficiency of the machine was found to be 92.4%, which the efficiency of the electrically powered machine was found to be 91.9%.

Introduction

Cassava is a major source of carbohydrates in human diet, being processed into Garri, fatal and typical as a constituent for human food. Recently other areas of uses of cassava are being implored. It is also being used as starch. The crop tolerance makes it more popular and now replacing yam in some part of Nigeria. The sweet varieties could be boiled for human consumption.

The tubers of cassava cannot be stored longer after harvest before decaying, and so processing follows immediately after harvesting. Cassava processing leading t size reduction includes peeling, grating dehydrating, milling and sieving. A typical cassava processing plant should therefore consist of units produced to achieve all the stages or steps mentioned above. The aim of this paper is therefore to present the result of efforts made in producing a device that is used in granting. The transformation of cassava tubers into pulp form is called grating.

Traditional tools used in Garri processing includes: Millstone, grinding stone, pestle and mortar. In these methods have low productivities and low hygienic solution to these problems that led to the designing and construction of machines that can grate the cassava of high quality in a short period of time and reduce human drudgery. Some of the machines include: roller crushing mill, hammer mill, bar mill, grater etc, all having one problem or the other.

Oyesola (1981) reported that, the traditional method of grating involves placing of the local grater, which is made of perforated metal sheet on the table where it is convenient for effective use and brushes sheet metal. The cassava turns into pulp and drop into container that is being used to collect the grated pulp cassava.

Adejumo (1995) in his design used a wooden grater in which the cassava forced into a hopper is rubbed against the grater which is being electrically power. Enhanced quantity of cassava can be grated using this method. However the durability of grater is low because of its wooden nature.

Ndaliman (2006) described a pedal operated cassava grinder which is powered by human efforts applied to pedal. The grinder pulverizes the cassava tubers into paste which can pass through a wine sieve. The effective performance of the design was at 60%.

The current design consists basically of 3 units: the hopper unit, the grating drum and the delivery channel. All these components are mounted on an angle iron frame. The machine assembly is powered mechanically or manually incase of electricity failure. It can be use in rural settlements where electricity supply might not in existence. Apart from faster rating rate, it required less him involvement. The grating drum is made of metallic pipe that carries a perforated plate which served as the grater. This overcomes the problem faced in the wooden grating drum.

Design Analysis and Calculations

Design Considerations

The general consideration in designing this dual – operational grating machine is producing a machine that can be easily assembled or disassembled, a machine in which the hopper allows materials to pass through effectively with minimum wastage; the grating drum is made of metal so as to increase its durability; the chute is sloppy to allow grating pulp to slide downward and get discharge by gravity.

Download Full Material-N5000

One Reply to “Development of Cassava Grating Machine: A Dual-Operational Mode”

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Post

Design and Simulation Of Medicine Dispensing Machine 

Design and Simulation Of Medicine Dispensing Machine

Abstract

It is  necessary  to  provide  medication  to  the  aged in time.      Automatic medication dispenser will be designed specifically for users who take medications without close professional supervision. It relieves the user of the error-prone tasks of administering wrong medicine at wrong time. A required information about microcontroller interfaced with alphanumeric keypad, an LED display, a Motor Controller, an Alarm system, a multiple pill container and dispenser will be collected firstly. Then the design will be modeled and simulated using software programs such as Proteus to -simulate the circuit and Bascom AVR to program the microcontroller.The major objective is to keep the device simple and cost efficient. The software used is reliable and stable. Elderly population can benefit from this device as it avoids expensive in-home medical care.Download Full Material-N5000

AUTOMATED VEHICLE SPEED CONTROL USING RADIO FREQUENCIES IDENTIFICATION

AUTOMATED VEHICLE SPEED CONTROL USING RADIO FREQUENCIES IDENTIFICATION

Abstract 

This project aims at automatically controlling vehicles at speed restricted areas such as schools, hospital zones etc. Nowadays the drivers drive vehicles at high speed even in speed limited areas without considering the safety of the public, the traffic police are not able to control them with full effect. Also it is not practical to monitor these areas throughout. This project paves way for controlling the speed of the vehicles within certain limit in restricted zones without interruption of the drivers. An RFID is used for this purpose. The RFID reader is attached along with the vehicle and the RFID tag with these zones. These tags are programmed to send a coded signal when the reader comes in proximity.

Whenever the vehicles enter into these zones their receivers will receive this code and the speed of the vehicles is controlled automatically with the help of the Arduino unit present inside the vehicle. The tags are placed at the beginning and the end of the regions for which the speed should be reduced.

Chapter One/Introduction 

Most of the road accidents occur due to over speed and rash driving of vehicles on public roads. The rate of accidents has increased as more vehicles come on to ground. Usually the drivers drive the vehicles at high speed without considering the public in speed limited areas too. Even though the traffic police control them we cannot achieve full response from them. Also it is not possible to monitor those areas at all time to regulate their speed Research on fully and partially automated roadway systems is being conducted in most developed countries. The major technologies are unlikely to be introduced before the end of the century and some are unlikely to be implemented within two decades. These systems offer excellent opportunities to control vehicle speeds and movements in order to avoid accidents but they rely, of course, on sophisticated features built into the roadway and vehicle. Progress with these systems should be monitored but they are unlikely to offer any significant short term solutions. But various types of accident are occurred on express highway road, highway road, off road just because of small uncertain activities. Rash driving, system failure, collision due to obstacles, exiting speed control limit etc. are just some causes of accidents. For prevention of this accident, government made some rules. Such as helmet, seat belt compulsion etc. Speed control at particular type of road is also necessary to avoid accidents. For this, there is no any system to control the speed of vehicle. That’s why, there is need to invent such system which control the speed of vehicle automatically at given limit at particular limiting distance. If this concept methodology system is possible, the problems related to traffic as well as accidents due to collision will be controlled. Now it is possible to control or set the speed of vehicle at a given limit on the roads like highways, school zones, hospital zones…etc express high ways and any area where the speed limit is desired by the technique suggested in methodology described in this project. In our country mostly 60 km/hr. limit for high ways and below 80km/hr. limit for express highways. Thus this project paves way for controlling the speed of the vehicles within certain limit in those restricted zones without the interruption of the drivers. This developed system is applicable for any speed limit which can be set or controlled as per the roads. In this project, the proposed methodology is suggested that one such kind of speed control system based on radio frequency detection for highway and restricted zones.

Problem statement

Nowadays people are driving very fast; accidents are occurring frequently, we lost our valuable life by making small mistake while driving (school zone, hospital zones, hills area, and highways). So in order to avoid such kind of accidents and to alert the drivers and to control their vehicle speed in such kind of places the highway department have placed the signboards. But sometimes it may not possible to view that kind of signboards and there is a chance for accident. Thus, the existences of an automatic regulation of vehicle near by the critical zones are highly required.Download Full Material-N5000

DESIGN AND IMPLEMENTATION OF WEATHER OBSERVING SYSTEM

DESIGN AND IMPLEMENTATION OF WEATHER OBSERVING SYSTEM

Chapter one Introduction

Meteorology is the study of the earth’s atmosphere .it includes the study of winds, and weather patterns weather phenomena such as rainbows and pollution, and the study of day to day weather[1].

To study the day-to-day weather we connect couple of instruments together to form a weather station, Weather stations are facilities with instruments and equipment for measuring atmospheric conditions, to provide information to study weather and climate, for weather forecasting for aviation, agriculture, construction, or shipping[1].

Weather   stations   can   be   Automated    weather    station    which    is  an updated version of the traditional weather station that uses sensors to measure it’s different parameters it is either used to save human labor or to enable measurements from remote areas, Or it can be manual weather station is a more traditional one which always involve the human effort, skills, power and energy to get its results.

A sensor network is a network of microcontroller integrated smart devices, which are spatially distributed and sensors. A sensor is a primary component of network essential for monitoring real world physical condition or variables such as temperature, humidity, wind speed, wind direction, barometric pressure and precipitation amount.

 

The remote stations are networks of weather stations which are located in remote areas because of this, they usually are not connected to the electrical grid but have their own solar panels and a battery. This network is a distributed network that sends data to central data storage. These distributed networks are connected to each other by the concept of the internet of things and cloud computing.

The Internet of Things (IoT) is a computing concept that describes a future where every day physical objects will be connected to the Internet and be able to identify themselves to other devices[3].

Cloud computing is a model for delivering information technology services in which resources are retrieved from the internet through web-based tools and applications, rather than a direct connection to a server[4]. Data and software packages are stored in servers. However, cloud computing structure allows access to information online which allows working remotely.

Listing some basic types of weather stations: the first one is the Synoptic Weather Station which makes local observation of weather at fixed times, it has the basic elements that is on most of the weather stations, which is temperature, humidity, pressure, wind speed and direction and rain gauge. The second one is climate weather station that is used in separated times and it has the same earlier said parameters but it doesn’t need rain gauge. The third one is the agriculture weather stations that is needed by the farmers to guide their work, it have special factors like the soil temperature and the sunlight and then with the application the weather station should has its own parameters that serves that application.Download Full Material-N5000