Engineering Notes by Oriental Motor

Case Study: Using Agricultural Automation to Improve Production Efficiency

[fa icon="calendar"] Jul 19, 2022 7:57:05 PM / by Johann Tang

Johann Tang

Agricultural automation has been a trending topic lately due to rising food inflation.  This case study tells the story of an agricultural producer who has successfully improved production efficiency by building in-house automation.

US Food costs inflated 10.4% in June 2022, which was the largest increase since 1981.  Improving production efficiency is one way of reducing costs.  We worked with one company in Hokkaido, Japan, that designs and constructs gardening facilities such as greenhouses, to understand how in-house automation has helped the company pivot into the agricultural side of the business.

 

FYI: Agriculture in Hokkaido

Hokkaidō (literally means " "Northern Sea Circuit") has nearly one-fourth of Japan's total arable land. It ranks first in the nation in the production of a host of agricultural products, including wheat, soybeans, potatoes, sugar beets, onions, pumpkins, corn, raw milk, and beef.  (Source: Wikipedia)

Hokkaido - Wikipedia Hokkaido's Best Parks and Nature Attractions - JAPAN AIRLINES (JAL)

 

The entire group, which operates all over Japan, cultivates vegetables hydroponically with the aim of achieving both profitability and a safe and secure brand and also develops facilities and equipment.  For example, the company owns a solar-powered greenhouse of about 355,000 square feet.

We interviewed the president of the company about the equipment that uses Oriental Motor's products, as well as the background of the company's efforts to "automate agriculture".

 

Behind the Scenes

"How do we increase production efficiency and profitability with a small team?"

 

By hydroponics method, over 30 types of vegetables, including baby leaves, are produced and shipped all year round.

By hydroponics method, over 30 types of vegetables, including baby leaves, are produced and shipped all year round.

 

Please tell us how your company navigated the challenge of entering the agriculture business.

Attention has been focused on the automation and efficiency improvement that is being carried out in the Netherlands, which is an advanced country in agriculture and institutional horticulture, and companies that have been working on it since around 2006 have become popular in Japan.  We decided to focus not only on the building of the greenhouse but also on the system creation and cultivation of internal facilities, and our company was established as an agricultural production corporation.

 

Smart agriculture and agricultural automation are commonly featured in the media every day. Is the number of inquiries actually increasing?

Recently, the number of tours and inspections has increased considerably. There are 2 cases a week, and 4 cases at most. People in charge of agricultural businesses and large companies who are thinking of entering agriculture from different industries often visit. Facility horticulture systems developed in collaboration with our parent company, such as hydroponics and air conditioning, are in demand. The new equipment has a touch panel, which enables remote control with a personal computer.

 

Were you active in automating your operations from the beginning?

In order to obtain profitability, it was necessary to stably carry out large-scale agricultural production. When I first started working in 2007, I had 4 to 5 employees, including myself, so I was always thinking about how to improve production efficiency with a small number of people. The house produces and ships 12 to 24 vegetables a year, depending on the type of vegetables. To that end, automation of work was essential.

 

Motor Applications

"I can't go back to the time before the machine was introduced."

 

Application 1 Mobile planter beds for hydroponics culture
Type of motor World K Series single-phase AC gear motors
Characteristics Constant speed, easy wiring, ingress protection

Brushless motors move these beds over 30 meters to secure work aisles.  It makes work easier for the operators because there are no obstacles under their feet.

Brushless motors move these beds over 30 meters to secure work aisles.  It makes work easier for the operators because there are no obstacles under their feet.

 

The beds are mobile to ensure work space between the hydroponic planter beds. The purpose is to maximize the cultivation area.

Planter bed drive Planter bed drive
Mobile planter beds are lined up in the greenhouse. The beds can be driven to the right or left with AC motors.

 

How does the device work?

The AC motor allows the bed to move left and right. A bed over 30 meters is driven by a single motor. In the past, we used rollers to move the beds, but since this method requires laying rails on the ground, we had 3 main issues with doing this manually:

  • it was difficult to avoid tripping on the rails
  • it was difficult to run the work cart
  • it was difficult to install a large number of rails horizontally

In the case of the roller, I thought that it was an advantage that the left and right operating ranges were free, but in fact, I came to the conclusion that it was not necessary to move so much, so I reviewed the design and made improvements.  We felt that it was sufficient if there is just enough space for people and work carts to pass through.

 

Application 2 Automatic sieving wheel for removing debris
Type of motor BMU Series brushless gear motor & dedicated driver
Characteristics Accurate speed regulation, easy setup, ingress protection

Vegetable mixer and debris remover

The purpose of this machine is to remove roots and debris adhering to harvested baby leaves, and a brushless motor is combined with a chain sprocket to rotate a large metal sieve basket. Prior to the introduction of this machine, it had to be done manually.  Also, when mixing multiple leaves, it was a process of spreading them on a large desk and stirring them manually. Both of these tasks were hard work, so I often hear employees saying, "I can't go back to the time before the machine was introduced."

 

A large sieving wheel is rotated to remove roots, dirt, and dust. The machine is also used for mixing multiple types of leaves.

A large sieving wheel is rotated to remove roots, dirt, and dust.

The machine is also used for mixing multiple types of leaves.

The sieving wheel is connected to the motor by a chain and sprocket.  It is driven by a single brushless gear motor that is both dust and drip-proof. The motor driver can easily operate the machine and change the speed.
The sieving wheel is connected to the motor by a chain and sprocket.  It is driven by a single brushless gear motor that is both dust and drip-proof.

The motor driver can easily operate the machine and change the speed.

 

The OM Experience

"Timely delivery attracted us to OM first."

 

I used to buy AC motors from other companies, but I was inflexible in terms of delivery time, and I was often in trouble because delivery dates weren't reliable. In such cases, Oriental Motor came to mind. Although it depends on the number of units, reasonable and reliable delivery times were the first attraction. I've heard the company name several times before, so it gave me a sense of security.  In my research, the after-sales service was excellent, so I chose OM.

 

SEs are motion experts and can provide motion control advice.

SEs are motion experts and can provide motion control advice.

 

How about communication and support after hiring?

Not only is the after-sales service free, but the support is also timely.  Their sales engineers are knowledgeable and will work with us from the initial design stage, making it easy to apply Oriental Motor's products comprehensively.  For a small team of engineers, we are very grateful for the support.  Even if we're working with a major manufacturer, it is often difficult for us to get the support we need right away.

 

Looking Into the Future

"Continuous improve through automation and decrease workload for operators."

 

What are you planning to do in the future?

I want to improve and automate the leaf reaper. Employees are reaping now, but at one location, for example, there are 144 hydroponic beds, so operators have to do that all day long. Since we aim to enable anyone to launch a profitable agricultural business in a short period of time, we think we will keep improving our automation.

 

Agricultural automation for greenhouses

Agricultural automation for greenhouses

 

Finally, what would you like to see from Oriental Motor?

In the field of agricultural automation, especially in greenhouses, there are many things that are rotated by a motor, such as harvesters, sieving machines, sowing, and opening and closing windows for air conditioning.  To maintain production efficiency and lower the carbon footprint, products with long life, high performance, and consideration for the environment will be favorable.

 

Recommended Products

World K Series
Single-Phase AC Induction Motors
BMU Series
Brushless Motors & AC Input Drivers
World K Series AC gear motors BMU Series

Single-phase AC induction motors are rated for continuous duty and are easy to use.  Various gear ratios are offered for either a parallel shaft or right-angle gearhead configuration.

World K Series  

Multiple speeds can be easily set and controlled by using the plug-and-play driver.  Advanced features include closed-loop speed regulation, a digital speed display, and stored data.

BMU Series

Contact our team to see how OM can help!

 

Topics: AC Motors, Speed Control, BLDC Motors, Washdown, Case Study

Johann Tang

Written by Johann Tang

Johann Tang is a Product Specialist at Oriental Motor USA Corp. with over 15 years of knowledge and experience supporting applications of various types of electric motors, gearheads, actuators, drivers, and controllers.

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