The use of Doppler effect in early warning system for vehicle collision at crossroad

Huang, Jin; Lee, Yang-Han; Lin, Ting-Wei; Chen, Yilun; Liao, Yu-De; Tseng, Hsien‐Wei; Ho, Ying-Sen

doi:10.1007/s00542-019-04514-z

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The principle of Doppler effect can be used to design a speed monitor for monitoring vehicle speed. 7 The vehicle speed monitoring instrument consists of a microwave transmitter, detector, and signal processing module. When a microwave transmitter emits a microwave which's frequency is 0 f , the microwave is received by a moving vehicle, then the microwave is reflected back by the vehicle, the microwave occurs two Doppler frequency shifts.…”

Section: Doppler Effect Of Electromagnetic Wavesmentioning

confidence: 99%

Application of Doppler effect and design of Doppler effect demonstration device

Tian

2024

Second International Conference on Physics, Photonics, and Optical Engineering (ICPPOE 2023)

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When the wave source and receiver move relative to each other, the frequency received by the receiver will change relative to the frequency of the wave source, This is called Doppler effect. This paper has summarized the principle of Doppler effect of mechanical wave and electromagnetic wave, and introduced the application of Doppler effect in various fields. Doppler effect is widely applied in nuclear physics, astronomy, engineering technology, traffic management, medical diagnosis, etc. For example, it is applied for satellite velocity measurement, Doppler radar, Doppler color ultrasonic diagnostic instruments, etc. Steven Chu of Stanford University won the Nobel Prize, he also adopted the Doppler effect in laser cooling. This paper has proposed a Doppler effect verification device, It consists of ultrasonic power generator, ultrasonic transducer and digital oscilloscope. This device can visually demonstrate the Doppler effect and effectively verify the frequency variation phenomenon caused by the relative motion of the sound source and receiver.

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Section: Doppler Effect Of Electromagnetic Wavesmentioning

confidence: 99%

Application of Doppler effect and design of Doppler effect demonstration device

Tian

2024

Second International Conference on Physics, Photonics, and Optical Engineering (ICPPOE 2023)

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“…Then, it has been widely researched for human activity recognition [6], vital sign detection [7], [8] in security [9] and healthcare [10]. The Doppler effect has also received attention by the ITS communities and has been widely investigated for collision prevention [11], vehicle classifcation [12], driver status monitoring [13] and pedestrian characterisation [14]. Due to the fact that most current on-vehicle radars are not able to continuously output the Doppler record, the aforementioned works are based on the controlled experimental environments.…”

Section: Introductionmentioning

confidence: 99%

Shallow Neural Networks for mmWave Radar Based Recognition of Vulnerable Road Users

Minto

Tan

Sharifzadeh

et al. 2020

2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)

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Finite element model for partial differential equations in optimization of vehicle safety collision problem

Zhang

2024

IFS

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Vehicle safety on roadsides is vital for preventing collisions, controlling failures and accidents, and ensuring driver and passenger wellness. Finite Element Analysis (FEA) in vehicle safety relies on the vehicle’s physical attributes for predicting and preventing collisions. This article introduces a Differential FEA (DFEA) model for predicting vehicle collisions regardless of the speed and direction for driver/ passenger safety. The proposed model induces a vehicle’s speed, direction, and displacement from two perspectives: self and approaching vehicle. The collision probability with the trailing or persuading vehicle is calculated by distinguishing the forward and rear features. The differential calculus for the point of deviation and distance metrics are significantly estimated for a vehicle’s front and rear ends. Such calculus generates a maximum and minimum possibility for self and approaching vehicle contact. This contact is further split based on the collision threshold; the threshold is determined using the safe distance between two vehicles for collision-less driving. The threshold exceeding vehicles are alerted for their change in direction/ speed through contact point (rear/front) differential derivatives. This ensures collision detection under fewer contact errors, leveraging the safety of the duo vehicles.

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The use of Doppler effect in early warning system for vehicle collision at crossroad

Cited by 3 publications

References 2 publications

Application of Doppler effect and design of Doppler effect demonstration device

Application of Doppler effect and design of Doppler effect demonstration device

Shallow Neural Networks for mmWave Radar Based Recognition of Vulnerable Road Users

Finite element model for partial differential equations in optimization of vehicle safety collision problem

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