smAvo and smaTo: A fruity odyssey of smart sensor platforms in Southern Africa

Broekman, André; Steyn, Wynand Jacobus Van der Merwe; Steyn, Jasper L.; Bill, Malick; Korsten, Lisé

doi:10.1016/j.ohx.2020.e00156

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…The maturity of open-source appropriate technologies being applied to agriculture are maturing in the research and development arena, focusing largely on electronics-based applications to agriculture [64][65][66][67]. There are also sophisticated systems that are open source and can be used to sterilize for example rooms in the agriculture industry as well as for research and development and medical applications [68].…”

Section: Food Processing Applicationsmentioning

confidence: 99%

Open Source 3D-Printable Planetary Roller Screw for Food Processing Applications

2021

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Historically, open source agriculture (OSA) was based on grassroots technology generally manufactured by hand tools or with manual machining. The rise of distributed digital manufacturing provides an opportunity for much more rapid lateral scaling of open source appropriate technologies for agriculture. However, the most mature distributed manufacturing area is plastic, which has limited use for many OSA applications. To overcome this limitation with design, this study reports on of a completely 3D-printable planetary roller screw linear actuator. The device is designed as a parametric script-based computer aided design (CAD) package to allow for the easy adaption for a number of applications such as food processing at different scales. The planetary roller screw is fabricated in dishwasher-safe polyethylene terephthalate glycol (PETG) on an open source machine and tested using an open source testing platform to determine if it could maintain a constant load without slipping and the maximum force. Then, this output is compared to a direct screw press using the same materials. The results found that the maximum force is more than doubled for the roller screw actuator using the same materials, making them adequate for some food processing techniques. Future work is outlined to improve the performance and ease of assembly.

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Section: Food Processing Applicationsmentioning

confidence: 99%

Open Source 3D-Printable Planetary Roller Screw for Food Processing Applications

2021

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“…In the hyper-connected agricultural logistics example, a DT is being developed of the transportation process of tomatoes and avocados from the field to the market. Through development of smart fruits [21][22][23], the experience of the transported fruits can be tracked continuously, providing a clear indication of any locations during the transportation process where stressors (e.g. low riding quality, unmaintained vehicle suspension, etc.)…”

Section: Digital Twin Agricultural Transportationmentioning

confidence: 99%

Selected implications of a hyper-connected world on pavement engineering

Steyn

2020

Int. J. Pavement Res. Technol.

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The world is becoming a hyper-connected environment where an abundance of data from sensor networks can provide continuous information on the behaviour and performance of infrastructure. The last part of the 3rd Industrial Revolution (IR) and the start of the 4th IR gave rise to a world where this overabundance of sensors, and availability of wireless networks enables connections between people and infrastructure that was not practically comprehensible during the 20th century. 4IR supports the datafication of life, data science, big data, transportation evolution, optimization of logistic and supply chains and automation of various aspects of life, including vehicles and road infrastructure. The hyper-connected 4IR environment allows integration between the physical world and digital and intelligent engineering, increasingly serving as the primary lifecycle management systems for engineering practitioners. With this background, the paper evaluates a few concepts of the hyper-connected pavement environment in a 4IR Digital Twin mode, with the emphasis on selected applications, implications, benefits and limitations. The hyper-connected world can and should be managed in the pavement realm to ensure that adequate and applicable data are collected regarding infrastructure, environment and users to enable a more efficient and effective transportation system. In this regard, and planning for future scenarios where the proliferation of data is a given, it is important that pavement engineers understand what is possible, evaluate the potential benefits, conduct cost/benefit evaluations, and implement appropriate solutions to ensure longevity and safety of pavement infrastructure.

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“…Intelligent packaging technology has emerged as a promising solution to the challenges of transporting fragile products. , Sensors play a pivotal role in intelligent packaging, with various sensor types developed to quantify mechanical impacts on fruits and vegetables during transit. , These sensors can be categorized into two groups: acceleration sensors, such as the “Electronic Fruit” system equipped with triaxial sensors, which monitor dynamic loads, and strain sensors, like the Tekscan series, which record static loads. However, both sensors require inconvenient power sources and employ costly nonbiodegradable materials, hindering their widespread adoption.…”

Section: Introductionmentioning

confidence: 99%

Natural Polysaccharide Film-Based Triboelectric Sensor for Fruit Transportation Collision Monitoring

Su,

Gao,

Yang

et al. 2024

ACS Appl. Mater. Interfaces

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Transportation-induced damage to fresh produce is a big challenge in logistics. Current acceleration and pressure sensors for collision monitoring face issues of power dependency, high cost, and environmental concerns. Here, a self-powered and environmentally friendly triboelectric sensor has been developed to monitor fruit collisions in transportation packaging. Microcrystalline cellulose/chitosan and sodium alginate films were prepared as positive and negative tribo-layers to assemble a natural polysaccharide film-based triboelectric nanogenerator (NP-TENG). The NP-TENG’s electrical output was proportional to the structure parameters (contact surface roughness and separation gap of the tribo-layers) and the vibration factors (force and frequency) and exhibited excellent stability and durability (over 100,000 cycles under 13 N at 10 Hz). The high mechanical-to-electrical conversion efficiency (instantaneous areal power density of 9.6 mW/m2) and force sensitivity (2.2 V/N) enabled the NP-TENG to be a potential sensor for monitoring fresh produce collisions in packaging during logistics. Transportation simulation measurements of kiwifruits verified that the sensor’s electrical outputs increased with the vibration frequency and stacking layer while varying at different packaging locations. This study suggests that the NP-TENG can effectively monitor collision damage during fruit transportation, providing new insights into developing intelligent food packaging systems to reduce postharvest supply chain losses.

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smAvo and smaTo: A fruity odyssey of smart sensor platforms in Southern Africa

Cited by 5 publications

References 20 publications

Open Source 3D-Printable Planetary Roller Screw for Food Processing Applications

Open Source 3D-Printable Planetary Roller Screw for Food Processing Applications

Selected implications of a hyper-connected world on pavement engineering

Natural Polysaccharide Film-Based Triboelectric Sensor for Fruit Transportation Collision Monitoring

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