Design and development of impact‐resistant sensor node for launch deployment into closed area

Sawai, Kei; Tanabe, Shigeaki; Kono, Hitoshi; Suzuki, Takahiro; Kawabata, Kuniaki

doi:10.1108/02602281211257551

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…Many wireless teleoperation systems for mobile robots are based on TCP/IP protocols. The Robot Wireless Sensor Network (RWSN) is one method that involves the teleoperation of mobile robots using wireless communication [8][9][10][11][12][13][14][15][16][17][18][19][20]. RWSN is a system that provides information on a disaster, which can expand the communication distance between remote operators and mobile robots.…”

Section: A Wireless Teleoperation Using Ad Hoc Networkmentioning

confidence: 99%

A Mobile Robot Teleoperation System with a Wireless Communication Infrastructure using a Leaky Coaxial Cable based on TCP/IP

Sawai¹,

Aoyama²,

Motoyoshi³

et al. 2019

IJACSA

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In this study, we propose and develop a wireless teleoperation system for mobile robots using a leaky coaxial cable (LCX) with a wireless communication infrastructure. In closed spaces resulting from disasters, some problems have been reported, such as cable entanglement, disconnection of wired communications, and problems with teleoperations (e.g., unstable communication quality for wireless communications). In this paper, we propose a communication infrastructure system for teleoperation of a mobile robot using LCXs as a communication infrastructure that considers the above issues. In addition, the communication quality was measured for the operability of the mobile robot by constructing an IEEE 802.11b/g/n network using an LCX, and the effectiveness of the proposed system in an actual environment was confirmed. In the evaluation of the communication quality, bandwidth compression throughput values and packet jitter were measured as evaluation items at the packet level to objectively consider the teleoperation controllability.

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Section: A Wireless Teleoperation Using Ad Hoc Networkmentioning

confidence: 99%

A Mobile Robot Teleoperation System with a Wireless Communication Infrastructure using a Leaky Coaxial Cable based on TCP/IP

Sawai¹,

Aoyama²,

Motoyoshi³

et al. 2019

IJACSA

Self Cite

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Impact cushioning device of wireless sensor node for emergency rescue system in underground coal mine

Tang

Zhou

Wang

et al. 2018

Advances in Mechanical Engineering

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Because of the closed geographic conditions and the effect of uncertain factors during a catastrophe in an underground coal mine, a high failure rate of the sensor nodes after a disaster is a common phenomenon. To ensure normal communications after a disaster, an impact cushioning device is designed to ensure survival of the sensor nodes during the disasters like the tunnel collapse, gas explosion, and so on. First, a model for the spring absorbing system is built; an analysis based on the model shows that the impact cushioning device can survive the free impact due to the extremely short impact time and the small displacement despite the large force from the instantaneous impact. Second, a collision model between the impact cushioning device and the rock is built; an analysis based on the model shows that both the circuit boards and the shell of the device can survive a tunnel collapse because the maximum stress values of the shell material and the circuit boards during the collision process are much less than their yield strength values. Finally, we use a triangular wave to simulate the shock wave used to test the collision model. An analysis of the test shows that the shell of the device and circuit boards are still safe and reliable under the effects of a gas explosion for the same reason that the maximum stress values of the shell material and the circuit boards in the gas explosion process are much lower than their yield strength values.

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Construction Strategy of Wireless Sensor Networks with Throughput Stability by Using Mobile Robot

Sawai¹,

Tanabe²,

Kono³

et al. 2014

IJACSA

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Abstract-We propose a wireless sensor networks deployment strategy for constructing wireless communication infrastructures for a rescue robot with considering a throughput between sensor nodes (SNs). Recent studies for reducing disaster damage focus on a disaster area information gathering in underground spaces. Since information gathering activities in such post disaster underground spaces present a high risk of personal injury by secondary disasters, a lot of rescue workers were injured or killed in the past. Because of this background, gathering information by utilizing the rescue robot is discussed in wide area. However, there are no wireless communication infrastructures for teleoperation of rescue robot in the post-disaster environment such as the underground space. Therefore, we have been discussing the construction method of wireless communication infrastructures for remotely operated the rescue robot by utilizing the rescue robot. In this paper, we evaluated the proposed method in field operation test, and then it is confirmed that maintaining communication connectivity and throughputs between End to End of constructed networks.

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Design and development of impact‐resistant sensor node for launch deployment into closed area

Cited by 5 publications

References 7 publications

A Mobile Robot Teleoperation System with a Wireless Communication Infrastructure using a Leaky Coaxial Cable based on TCP/IP

A Mobile Robot Teleoperation System with a Wireless Communication Infrastructure using a Leaky Coaxial Cable based on TCP/IP

Impact cushioning device of wireless sensor node for emergency rescue system in underground coal mine

Construction Strategy of Wireless Sensor Networks with Throughput Stability by Using Mobile Robot

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