Counting hooks and fishes
April 2004
Sensors & Transducers
In the USA, an Alaskan-based company is working on developing an automated shipboard system to replace human fisheries observers - people that travel out to sea aboard commercial fishing vessels.
In the USA and Canada, depending on the size, amongst other factors, many vessels are prohibited from fishing unless an independent observer is on board to certify fishing has been done legally and according to the rules. In Alaska about 2000 fishing boats fall under state and federal observer coverage requirements. The number nationwide is about 6000. Another 1000 vessels are in Canada.
Another function that these observers perform is to calculate the 'catch per unit effort', ie, the ratio of how many baited hooks the vessel deploys into the water vs the number of fish caught.
The Alaskan company is now experimenting, in collaboration with the sales team at Telco Sensors, with a system that calculates the number of hooks being deployed each time.
At the moment they are testing the SMT 6000L TS 5 and SMR 6202 TS 5, which has a 2 m range and 0,5 ms response time.
The idea is not to actually count the hooks but the leaders that are approximately 12 inches long that connect the hooks to the mile long longline. Fish hooks could be deployed into the water two or three times a day with a deployment taking anything between 1 and 3 hours a time and numbering as many as 10 000 hooks.
The system is quite complex and is currently undergoing the second testing. The fishing company is quite confident that Telco has a system that can do the job.
Certainly, it can offer the right level of performance and endurance needed for this extreme environment.
For more information contact Telco-Gail Norton, 031 701 4861.
Further reading:
Adjustable proximity sensor with five metre range
Sensors & Transducers
The Telco line of photo-electric eyes have the accuracy and reliability you need.
Read more...
Food safety – a matter of weight
Sensors & Transducers
Weighing systems play a key role in ensuring product quality in food production, complying with legal requirements and avoiding product recalls. The Minebea Intec MiNexx portfolio has been specially developed to meet these requirements.
Read more...
Telco sensors in the paper and pulp industry
Sensors & Transducers
The paper and pulp industry poses a major problem for most photoelectric sensors. Telco Sensors has overcome this with its powerful and high-performance photoelectric sensors, ensuring penetration of thick and harsh pollution while guaranteeing reliable detection.
Read more...
Leaders in sensor technology
Sensors & Transducers
A new addition to the Telco Sensors range is the adjustable Proximity sensor, with a range up to 5 metres.
Read more...
Cutting-edge sensor technology
Endress+Hauser South Africa
Sensors & Transducers
The advantage of Endress+Hauser’s Memosens technology is that digitised measured values and sensor information are transmitted via a non-contact connection from the sensor to the cable, and as a digital signal to the transmitter.
Read more...
Miniature inductive sensors
ifm - South Africa
Sensors & Transducers
The inductive IY/IZ type sensors from ifm are used in various industrial areas where space is limited.
Read more...
The expanding role of 3D cameras in industrial quality control
TANDM Technologies
Sensors & Transducers
Across factory floors, warehouses, mines and research centres worldwide, computer vision paired with 3D camera technology is revolutionising quality control.
Read more...
PDS implementation on mines
Sensors & Transducers
Level 9 vehicle intervention for collision avoidance has been mandatory on South African mines since 2022, yet the effective roll-out of proximity detection systems remains slower than expected. This is not due to the technical limitations of integration but to operational readiness on site.
Read more...
Monitoring analogue process values
ifm - South Africa
Sensors & Transducers
Everywhere in industry, electronic sensors are used to detect process values such as temperature, pressure or flow. Process value monitoring often takes place directly in the sensor.
Read more...
Protecting buildings’ embodied carbon with retrofitted systems
Schneider Electric South Africa
Sensors & Transducers
The World Economic Forum has said that around 80% of the buildings in existence will still be around in 2050; it is therefore essential that in order to combat climate change we retrofit them for energy efficiency.
Read more...
printer friendly version