A novel Doppler based speed measurement technique for individual free-ranging fish

Hassan, Waseem; Føre, Martin; Pedersen, Magnus Oshaug; Alfredsen, Jo Arve

doi:10.1109/sensors43011.2019.8956870

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…In aquaculture, the main method for obtaining individual level data is using miniaturized, encapsulated electronic systems commonly referred to as "tags". Typical parameters that can be measured in an operational setting today are activity and swimming depth [7], heart rate (HR) [8], swimming speed [9] and position [10,11]. Tags are available in two main types: Data storage tags (DSTs) and telemetry transmitter tags [12], and are usually surgically implanted into the fish's peritoneal cavity.…”

Section: Introductionmentioning

confidence: 99%

Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar)

Svendsen

Økland

Føre³

et al. 2021

Anim Biotelemetry

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Background Welfare challenges in salmon farming highlights the need to improve understanding of the fish’s response to its environment and rearing operations. This can be achieved by monitoring physiological responses such as heart rate (HR) for individual fish. Existing solutions for heart rate monitoring are typically based on Electrocardiography (ECG) which is sensitive to placement and electrode orientation. These factors are difficult to control and affects the reliability of the principle, prompting the desire to find an alternative to ECG for heart rate monitoring in fish. This study was aimed at adapting an optical photoplethysmography (PPG) sensor for this purpose. An embedded sensor unit measuring both PPG and ECG was developed and tested using anesthetized Atlantic salmon in a series of in-vivo experiments. HR was derived from PPG and compared to the ECG baseline to evaluate its efficacy in estimating heart rate. Results The results show that PPG HR was estimated with an accuracy of 0.7 ± 1.0% for 660 nm and 1.1 ± 1.2% for 880 nm wavelengths, respectively, relative to the ECG HR baseline. The results also indicate that PPG should be measured in the anterior part of the peritoneal cavity in the direction of the heart. Conclusion A PPG/ECG module was successfully adapted to measure both ECG and PPG in-vivo for anesthetized Atlantic salmon. Using ECG as baseline, PPG analysis results show that that HR can be accurately estimated from PPG. Thus, PPG has the potential to become an alternative to ECG HR measurements in fish.

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Section: Introductionmentioning

confidence: 99%

Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar)

Svendsen

Økland

Føre³

et al. 2021

Anim Biotelemetry

View full text Add to dashboard Cite

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A New Method for Measuring Free-Ranging Fish Swimming Speed in Commercial Marine Farms Using Doppler Principle

Hassan¹,

Føre²,

Pedersen³

et al. 2020

IEEE Sensors J.

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A novel Doppler shift based technique for measurement of free-swimming fish speed in marine farms using acoustic telemetry tags was developed and evaluated in this study. The proposed method can potentially augment current telemetry systems with a new biologically relevant measurement without significantly changing the size and energy constrained tag-side of the telemetry systems. For speeds in the range of 20cm s −1-110cm s −1 an overall relative rms error of less than 10% in measured speed based on the proposed Doppler method was achieved in the tests conducted at a fully stocked commercial fish cage, with an rms error of 7.85cm s −1 (std. dev. 7.5cm s −1). The study thus demonstrates the feasibility of measuring the swimming speeds of individual free-ranging fish using this method.

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A novel Doppler based speed measurement technique for individual free-ranging fish

Cited by 2 publications

References 17 publications

Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar)

Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar)

A New Method for Measuring Free-Ranging Fish Swimming Speed in Commercial Marine Farms Using Doppler Principle

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