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Save Manual Operations as automatic plots

The flight path from a manual flight or a manual boundary flight can now be saved as a field with one click for automatic use later. This is helpful for small plots, where you can fly once and save it for repeated use. Pilots can save time on larger plots by manually spraying field boundaries and automatically spraying the rest of the field.

Notes:

  1. The green track on the outermost circle determines the coverage area of the plot. Ensure that the edges of the plot are covered by the green track to avoid omissions.
  2. When using this function to encircle the plot, since the edges have already been sprayed, be sure to edit and adjust the route separately (route spacing, margin, boundary spraying, etc.) to avoid overspraying or missing spots.

Add Marker Lines and Points

When planning flight routes, you can now add marker lines and points to points of interest on the map.

Application Examples:

Marker Lines: Can be used to mark the location of power lines within the plot, making it easier to track their location relative to the drone during operations.

Marker Points: Can be used to mark objects in fields, making it easier to locate and find them quickly after covering the soil.

Notes:

  1. Unlike field boundary points and obstacle points, marker lines and points do not affect route planning or flight operations; they are only used for position display.
  2. Marker lines and points cannot be saved separately. They need to be added to boundary points and saved as a plot.

Low Speed Ascend at the start point

After a refill or battery swap, when the drone returns to the start point or break point, its propeller downwash at low altitude and speed may cause some crops to lodge.

After enabling Low Speed Ascend, the drone can descend and spray from the set Low Speed Ascend height, reducing the risk of lodging.

The start-spraying height is Operation Height plus Low Speed Ascend Height

Note: 

  1. Enabling Low Speed Ascend will apply to all turns and starting points (breakpoints). Please use it only where there are no obstacles at the field boundaries and in the field.

Added Route Visualization function in M+ mode

In M+ mode, Route Visualization helps users find the breakpoint and align the drone’s direction according to guidelines. This helps users avoid route deviation and inconsistent spacing.

Note: 

  1. To disable this feature, go to “Top Right Corner Settings – Aircraft Settings – Alert and Assist – Route Visualization (M+)” and choose to turn it off.

Task Summary is available in real time during operations

During operations, you can view task summaries in real-time, including completed work data, estimated chemical usage, and the remaining work to be done.

Multi Plot Operations get some optimizations

Multi Plot Operations now supports Empty Tank Point estimation and Automatic RTH.

When using Multitask, Empty Tank Point estimation can now span multiple plots, showing the estimated Empty Tank Point based on the actual volume of chemical left in the tank.

In addition, users can now select “Return Home After Completing Operation” when using Multi Plot Operations. Once enabled, the drone will automatically return to home after completing all plot operations.

Note: 

  1. Smart Return to Home supports obstacle avoidance, but the success rate of obstacle avoidance varies with different speeds and obstacles. Please pay attention to the surrounding environment and avoid heights with power lines during return to ensure safety

Introducing Show Fields Nearby to help avoid overlapping

The new “Show Fields Nearby” function helps users avoid overlap by displaying nearby fields on the map during field planning. It also aids in manual operations, helping to avoid accidentally entering adjacent fields.

Spray/Spread When Turning on Orchard Routes

With Spray/Spread When Turning enabled, the drone will continue to spray while turning, improving edge spraying effectiveness.

Note: 

  1. This is only effective when the orchard route planning mode is Standard. You can enable it in the remote controller app under “Route Settings – Advanced.”

Additional Updates:

  1. Takeoff is prevented during refilling, enhancing safety for ground crews and operators.
  2. During flight, pilots can press the orange pause button on the remote controller. This will cause the drone to pause automatic flight and enter hover mode.
  3. After landing, propeller rotation stops two seconds faster, increasing safety and reducing downtime.
  4. Added support to perform spreading at the fixed-spot routes in Fruit Tree Operation mode.
  5. Added support to disable atomized spraying in the Fruit Tree Operation mode.
  6. Added support to set the terrain scenario and flight parameters in the Task Settings on the left side of the screen when applying the task.
  7. Optimized the display of the flight trajectory in the app. The flight routes of the latest two flights are shown in the app during the operation.
  8. Added warnings when the propellers are abnormal.

We were excited about the arrival of the latest agricultural drone from the Agras range, the DJI Agras T50, but at the same time we were concerned about what to expect from the new features and overall performance of the drone.
As a leading dealer of agricultural drones, we had the opportunity to work with this drone and test its features for over half a year before its official launch.
In the following articles on our blog we will bring you detailed features, interesting facts, insights and most importantly the results of our field testing of the drone.

Have our fears been confirmed?

Our biggest concern was the change to a magnetic impeller driven pump as well as centrifugal spray nozzles, as we know that the biggest weakness on the previous DJI Agras T30 was the pumps and nozzles.
However, the fears did not come true, the change to this type of spraying system was justified and most importantly significantly more efficient.
The pumps do not come into contact with the spray liquid, which guarantees a longer service life of the pumps as well as a smoother operation of the nozzles.
Centrifugal spray nozzles also impressed us in a positive way, they can handle the application of thicker products, which was a problem with the previous model and which complicated the work of the drone.

New features

In addition to the new spraying system, the Agras T50 differs from previous models with added features.
The most important and most interesting is the mapping function. Thanks to the UHD camera, which has an adjustable angle, it is possible to map fields with the T50 and prepare a mission right in the field. This function is made possible by the new 8-core processor in the remote controller with a 7-inch display.
Compared to the Agras T30, the drone is significantly more agile and the movements during liftoff , return or during a mission are smoother – it feels as if you are controlling the drone even during automatic flight.

Is the 11-meter range realistic in our conditions?

The priority of our testing of the T50 was to see if, in the working conditions in which service providers find themselves, the drone can provide a steady 11-metre sweep and, more importantly, and even coverage of crops.
As is our custom in coverage testing, the testing was done under realistic conditions, with indicator papers and a number of combinations that can occur on the job.
The DJI Agras T50 did not disappoint, the 11-meter range is a reality and the coverage, which is the most important factor, is achieved. However, we will bring you a detailed analysis of our testing in future articles, as there are combinations of speed – droplet size – dose – width of coverage, which we prefer to avoid.

Conclusion

The DJI Agras T50 is the drone we’ve been waiting for. Not so much the increased tank volume as the amount of new features this model has brought us. The new features will guarantee you the efficiency and speed to get that promised 21 hectares per hour – yes, it’s possible.
We will bring you a more detailed analysis of the features and our testing in the following articles that we will prepare for you. Don’t hesitate to subscribe to our newsletter so that you don’t miss out on important information that could make your work more pleasant and easier in the future.

Already in 2019, we have encountered many complications and problems when entering the Slovak market with the provision of agrodrone services in agriculture. As the market was not and still is not fully accustomed to such technology in agriculture, one of these problems was the clientele and getting orders for these services. It is for this reason that we know what obstacles start-up entrepreneurs in this field have to go through. That’s why with our latest product, we decided to help everyone to have not only a start but also a whole “service career” much easier than we had it.

Access to contracts even without clients

The product that we want to introduce to you with this article is our BIRDU web portal. BIRDU is a portal that serves both service providers and service providers.

The idea of the portal is to make it possible for a new provider of these services, who is new to agriculture, for example, has no contacts, does not know how to get clients for these services, to get orders. Therefore, any customer who is interested in agrodron services can register on our portal and place a request for each application they are interested in, which can then be accessed by any service provider (sprayer). Thus, registered sprayers will be able to see every order from clients in their area (or an area they can determine in advance).

The customer enters, the service provider accepts

When entering the portal, the registered customer has the option to create a new order. When creating an order, it is necessary to choose the date period when he would be interested in the application agrodronmi. After selecting the date period, it is also necessary to select the specific parcel for which the order is created. This selection can be made on the map which will be displayed to the customer immediately after clicking on “new order”.

Then, when the customer has filled in the necessary information, he can choose the publication of the order from two options:

The customer has the option to choose to publish the order to the public, thus making the order available to every registered service provider in their area and thus ensuring a higher chance of the order being accepted by one of the many service providers or a particular service provider they may have been working with for a long period of time. The service provider then accepts the order and issues a quotation, which the client may or may not accept.

Weather

When ordering, it is also possible to monitor the weather for each day. If the customer has entered a date period in which they report unsuitable weather on the application, the sprayer can request a change to a date period specified by them. Thus, the weather feature can help avoid potential complications and delays on the part of the service provider.

More agrodrones, more pilots, more teams

After registration, the registered service provider must also add a list of drones with pilots to their profile in order to be able to subsequently create a team that will be assigned to individual orders. When creating teams, the service provider first enters the number of agrodrones he has: the name of the drone and its serial number. Once the agrodrones have been entered, each pilot must also be entered: the name of the pilot and his average output per day and night (in hectares).

When the service provider enters the necessary information, he can create teams: the name of the team and also assign the pilot and agrodrone he wants to have in this team. More agrodrones, more pilots and more teams will of course give you more efficiency and more hectares flown.

Sub-order or postponement

If the deadline does not suit you as a service provider, you have the option of postponing or creating a sub-order on the portal.

Postponement means that if you are unable to execute an order you have the option of postponing it to another service provider, who will then invoice themselves once it has been executed.

However, if you have some partners who will execute the order on your behalf, for your client – you can create a sub-order. A sub-order is a feature in which your partner (the service provider you are working with) creates a quote for you and you, as the service provider, create a quote for the customer who has selected you for their order. In this function, the executor for the customer is retained, who will also invoice the order. But the executor will order their service provider to do the work.

Partner -> your company -> customer

This model is mainly used in case of congestion and with regular clients who are a priority for you.

Conclusion

To make working with the portal as easy as possible for you, we have prepared a video tutorial containing all the necessary functionalities and procedures for working with the portal.

You can watch the video on our website or YouTube channel.

In order to keep innovating and to attract as many people as possible in different sectors, not only in agriculture and industry, but also the general public, we try to invent and bring new products to our offer, which would have a use for example in travel, sports, fishing, etc..

As the exclusive and only dealer in the country, we bring to the market “Deeno”, a brand offering portable (electric) charging stations and solar panels.

If you work remotely, camp, go fishing or if the power is out at home, having access to a portable power source can help you significantly – that’s why we have decided to add similar products to our offer.

So what is Deeno?

Enterra Deeno X1500 portable charging station

In our range you’ll currently find the Deeno X1500 which is a portable charging station designed to fill the role for your off-grid adventures.

The big benefit is the high power capacity that this station offers. With a capacity of 1036 Wh and a power output of 1500 Watts, it can handle the demands of most home appliances.

When it comes to charging smartphones, laptops, or if you need to run your microwave or blender urgently – the Deeno X1500 can help you with that.

LiFePO4

The station is equipped with state-of-the-art LiFePO 4 technology, which ensures stability and efficiency in power supply. Lithium iron phosphate batteries have high energy density and low self-discharge values. One of the most important features of this type of battery is an electronic management system called BMS, which controls not only the charging and discharging of the battery, but also its temperature.

Thanks to this advanced technology, the station guarantees the endurance, reliability and stability you need for outdoor activities.

Practical design

Miroslav Baca with Deeno X1500 charging station from Enterra company

The importance of user comfort is also ensured by the practical design that the Deeno X1500 offers. All input and output ports are easily accessible and labelled. Hidden handles make it easy to carry and transport the station so that you can get on your adventures without any hassle.

Features and amenities

LED light on the back of the station provides 4 modes of operation – 25%, 50%, 100% and SOS mode. In addition to the light, you also have a clear 4.3-inch LCD display that provides real-time information on power status, power, and time remaining.

A great advantage of this station is also the solar charging option – the optional portable solar panel uses the MTTP function and can charge the station in 6 hours.

Where can Deeno be used?

Miroslav Baca testing Deeno X1500 charging station from Enterra company using angle grinder
Miroslav Baca charging his iPhone with Deeno X1500 charging station from Enterra company

From practice and service repairs it is known that 90% of accidents and problems with the drone are caused by the pilot and his improper handling of the drone, but there are also situations where the drone is at fault, or a fault that was not discovered during manufacture. In these situations, as an authorized service, we guarantee a repair under warranty (up to 2 years). 

A step that will make this process easier and faster is the need to export post-accident data (logs)

Important notes

Immediately saving the data after encountering a problem will ensure the accuracy of the data transfer and avoid overwriting the data after switching the RC (controller) on/off several times, part of this step it is necessary to have the RC connected to the internet to synchronize the data during and after each flight.

Due to storage space limitations, the data storage in the drone and the controller is different: the drone can store 25 logs while the controller can only store 10 logs.
This is why it is best to deal with the situation immediately after a problem arises and not to manipulate the drone further.

Preparation before uploading data

(These steps must be done in any case)

  1. Check the firmware version of the drone (if it is only a problem with the driver, this step can be skipped)
  2. Check the firmware version of the driver
  3. Description of the accident, error that occurred: at what time, during what conditions, during what operation, what error or problem occurred
  4. The time of the accident, it is necessary to know at least the approximate time when the problem occurred in order to send and check the correct data

How to export data

1. In the event of an aircraft accident, flight abnormalities, spraying and scattering abnormalities

2. In case of abnormal radar functionality

3. In case of RC (controller) abnormalities such as black screen display, joystick error and system crash

4. In case of abnormal transmission and image control such as connection loss, screen freeze

5. In case of abnormal APP functionality

6. In case of firmware update failure

After receiving the data from the client, the authorized service investigates the event and then evaluates it as:

In order to clarify the rules of spray drift by agricultural drones (or drones) under different influencing factors, also to guide agricultural drones to safely and efficiently carry out crop protection operations and to ensure safety for non-target organisms and the environment, a spray drift test was carried out with a DJI Agras T30 drone.

The test was conducted at the test site of the Chinese Academy of Agricultural Sciences. A DJI Agras T30 agricultural drone was used for testing. The terrain on which the test was conducted was flat and the surrounding area was open, free of obstacles. The flight speed of the T30 drone was selected as 3 m/s, 4 m/s, 5 m/s and 6 m/s. The flight height can be selected as 2 m, 3 m and 4 m. It is also possible to choose between normal and coarse drop size. Each combination of parameters was used to measure the droplet deposition and spray drift of an agricultural multi-rotor drone at three different crosswind speeds. The test was carried out on an area of 128 m x 125 m (length x width). Six sampling strips were arranged in the sampling area with an interval of 5 m between each sampling strip. The first and last sampling strip were 50 m from the edge of the test area. The sampling area includes 0-20 m in the operational area and 0-50 m in the downwind drift area.

After application, wait 5-10 minutes, then check that all droplets on the filter paper are dry, put them in order in zip-lock bags and store the samples in a dark and cool place. Later, the samples are processed and measured. The agricultural drone is set to auto operation mode with multiple applications, and the flight path of the drone is 125m long to ensure that the agricultural drone in the sampling area will fly at a constant speed. An aqueous solution of Rhodamine B at a concentration of 5 g/l was prepared prior to the test. Subsequently, the drone was filled to 50% capacity, so up to 15 l. Before the test it is of course necessary to check the functional condition of the drone nozzles and the flow calibration. After the wind direction meets the requirements and stabilizes, the drone will take off with the auto-flight button, apply RTK, and return to the takeoff location from the upwind direction after spraying.

DJI Agras T30 drone testing scene

Analysis and conclusion of testing

  1. Effect of crosswind velocity on drop drift:

Crosswind speed is the most important factor affecting the drift distance and the amount of drifted droplets, and the best operating condition is when the crosswind speed is less than 3.4 m/s.

  1. Effect of flight height on droplet drift:

When the crosswind speed is in the range of 0-3.4 m/s and the flight height is 2 m, 3 m and 4 m, the amount of settled spray droplets in the operating area gradually decreases, the uniformity of droplet distribution deteriorates, and the droplet drift distance gradually increases. When the crosswind speed is greater than 3.4 m/s, the change of working height has almost no effect on the droplet deposition and drift, and the main influencing factor is the crosswind speed.

  1. Effect of ambient temperature and humidity on drift:

The effect of humidity on droplet drift is more significant provided the ambient temperature is 15-30 °C, the crosswind speed is less than 3.4 m/s and the humidity is in the range 20-80 %. As the ambient humidity increases, both the amount of drift and the drift distance decrease.

The optimum ambient humidity range to reduce fog drift is: ambient humidity above 60%. When the ambient wind speed reaches more than 3.4 m/s, the change in ambient temperature and humidity has no significant effect on droplet drift.

In Switzerland, a “National Standard Scenario” has been developed for unmanned aerial vehicles (or drones) for spraying. This “scenario” contains a number of important points that must of course be fulfilled in order for drones to be used for the application.

After 2025: Spraying drones will need a permit from the Federal Civil Aviation Authority under SORA or EU-PDRA under (EU) 2019/947. According to current information, around 100 drones are currently being used for spraying in Switzerland.

The approval and testing process that each type of drone has to go through with the Agroscope organisation is a set of many activities carried out with these drones. (The DJI Agras T30 drone, for example, has passed this testing and is authorized to work) To begin with, the test criteria for the homologation of these drones are set, namely:

  1. The sprinkler system shall comply with the principles of ISO 16122
  2. For lateral distribution of spray liquid, the coefficient of variation must be
  3. Accuracy of automatic flight paths +/- 50cm

Standard controls for the spray system (ISO 16122)

One of the main parts of Agroscope’s testing is a standard check of the technology and the spray system. This consists of several points such as:

obr č.2

Spray liquid transverse distribution

This is being examined on a 6m x 3m “Sampler” (see Figure 3). The principle is to control the precise dosing from all nozzles (see Figure 4) while hovering continuously above the ‘Sampler’ at a height of 2.5 m

obr č.3
obr č.4

Influence of flight height on distribution

Transverse distribution at 1 to 2.5 m flight height (see Graph 1)

graf č.1

At heights of 1m and below, no suitable distribution occurs 2.5 – 3m provides much better distribution (less influence of individual propellers and more homogeneous airflow)

Transverse distribution with different nozzle types and different measurement methods

In this testing, 3 measurement methods were used:

And 3 types of nozzles:

Testing showed that there were no significant differences between the methods (see Figure 2)

graf č.2

Flight path accuracy

In this testing, the drone flies according to predefined routes (simulating a field, 3 bands) and has an additional RTK-GNSS data logger attached to it (see Figure 5) to measure the deviation of the defined route. Accuracy achieved in general (see Figure 3):

obr č.5
graf č.3

Conclusion

In Switzerland, drones have found their place and application especially in vineyards with steep slopes, which has been greatly helped by Agroscope and the Federal Civil Aviation Authority. The homologation and testing of sprayers started in Switzerland 5 years ago, which has also resulted in many positive responses to the drones themselves. The use of drones has shown several advantages in certain cases, which is why more than 100 drones are currently flying in Switzerland.

With the use of technology comes the data, technical parameters or knowledge required to operate it.
Agriculture as such is a complex long-distance run, consisting of a number of smaller processes set up to work together to produce a final product. It is no different with the use of drones in agriculture. The actual flying and application has a lot of smaller processes behind it needed for the drone to be able to fly at all, let alone apply the necessary products to the intended location.

Flight hight vs. spray width

As you can read on the official DJI website, the most used drone in Slovakia: the DJI Agras T30 has a maximum spray width of 9 meters. However, the question remains “at what height does it have 9 meters and how does the cone change with respect to the decreasing height?”. Our company has therefore decided to obtain these data (and many others, which we will discuss below) directly from the field. Testing consisted of placing 11 posts with a 1 metre spacing between each post. Each single post had an indicator paper attached to it to ensure that we could see the accuracy of the spray. The only thing that could affect our testing was the changeable weather – especially the wind. Therefore, we ran the testing multiple times to make sure we had wind-free and accurate results. The flights were carried out with the DJI Agras T30 drone at different heights of 1, 2, 3, 4 and 5 meters above the ground. The result of the testing showed that the spray cone is variable up to a height of 4 metres above the ground (or vegetation), after a height of 4 metres the cone does not expand but then falls perpendicularly to the ground (or vegetation).

Drop size and coverage

One of the main questions about the effectiveness of drone application is the size and amount of droplets. In our experiment, we have also emphasized on solving this issue and the possibility of providing facts to customers who are interested in this issue. In the experiment with indicator papers, we examined the coverage at different application rates. The experiment was carried out at 6, 8 and 10 litres per hectare with nozzles of model XR TEEJET 11001VS The conclusion that could be drawn from repeated, multiple testing was that the drone technology can apply even at a rate of 10 l/ha more complex products, or products that require greater coverage, i.e. a greater number of droplets per cm². These additives are, for example, fungicides, which require a coverage of at least 60 droplets per cm². According to the indication papers and repeated trials, we recorded a coverage at a dose of 10 l/ha of just 60 droplets per cm², which confirms the maximum efficiency of work at doses >10 l/ha.

Swiss testing and trials

Our Swiss partners, Agroscope, have embarked on a much more detailed and extensive testing and investigation of this technology. During their activities, they have been particularly concerned with:

A more detailed description of Agroscope‘s testing can be found in the following article, Drones for spraying in Switzerland.

In 2015, a revolution in agriculture began, in which DJI drones play a significant role and are a major contributor. Drones are changing the face of global agriculture, providing enormous opportunities for precision management of agricultural inputs (fertilizers, crop protection products) and natural resources (soil, water).

With rising production costs and declining profitability, agricultural producers today should pay attention to every element of farming technology that helps reduce the cost of growing crops. The search for ways to reduce the cost of elements of agricultural technology leads us to the consideration of the widespread use of drones in the cultivation of fields in order to increase crop yields and the development of modern agricultural technologies for growing crops that conserve resources.

The drone revolution has grown globally in a relativelly short time, with drones currently being used in agriculture in many countries on different continents. The technology makes it possible to save large amounts of water ( in some cases even chemistry ), which is a big help especially in countries that have a problem with this (e.g. Spain, Italy…). We can find many articles and studies on drone solutions in agriculture, and the reasons why this technology is beneficial in today’s agriculture.

One of the interesting and informative articles is, for example, the application of fertilizers on rice, where it was possible to increase the yield by 8% with 20% less fertilizer applied thanks to a variable application with a DJI Agras T30 drone:

https://ag.dji.com/case-studies/ag-case-en-t30-jp-rice

Another article demonstrating the effectiveness and efficiency of drone technology is, for example, the application of insecticide to protect potatoes with the DJI MG-1P drone:

https://ag.dji.com/case-studies/dji-ag-case-en-sweet-potato

Improving soybean yield with spot applications for weed control:

https://ag.dji.com/case-studies/ag-case-en-t30-soybean

This article discusses an application carried out in the USA. The farm has adopted a solution for weed eradication using DJI drones and a local (or spot) application. As a result, besides saving money, it was possible to save 60% of the herbicide and also the crop, as the drone did no damage with its “ride”.

This “drone” revolution came to the Slovak market in 2019, when we entered the market as the first official service provider with Agras drones for spraying, specifically with the DJI Agras T20 model (we currently use the DJI Agras T30 model).

To date, there are various models of DJI brand spraying drones on the domestic market: the DJI Agras T30, T10, older models such as the T20 and T16. Currently the most widely used drone for spraying fields, orchards and vineyards is the DJI Agras T30, which is also currently the flagship of spraying drones.

Currently, as an official distributor of these drones, we are trying to inform the public about the use of this technology in agriculture and also about its advantages or disadvantages compared to ground-based technology.

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