Sutthinet, Chalin

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Sutthinet, Chalin
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chalin.su@kmitl.ac.th

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    Item type:Publication,
    A novel dual magnetodiode for wireless sensor networks
    (2020-08-14)
    Sutthinet, Chalin
    ;
    Poyai, Amporn
    ;
    Phetchakul, Toempong
    This paper presents a new magnetodiode, the so-called dual magnetodiode, for wireless sensor application. The device is a current mode which can be integrated with a chip compatible with modern low power, low voltage integrated circuit (IC). The structure and operation are completely different from a conventional magnetodiode. The structure is composed of two p–n junctions in that one region is common and the others are split terminals for output of differential current. The underlying mechanism is carrier deflection by induced force from a magnetic field. The carriers are injected from the common region by forward bias. The defection carriers diffuse, deflect, and recombine along substrate through split terminals according to direction and density of the magnetic field linearly and symmetrically. From the comparison of complementary structure of the split cathode and the split anode structure of L<inf>D</inf> = 50 µm, the bias current 1 mA and magnetic field 0.5 T, the relative sensitivities (S<inf>R</inf>) are 11.01 and 11.19 T<sup>−</sup><sup>1</sup>, respectively. This device is a simple p–n junction structure which is compatible with all micro/nanotechnology.
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    Item type:Publication,
    Firearm Training System by Laser gun
    (2023-01-01)
    Takopueak, Nopporn
    ;
    Sutthinet, Chalin
    ;
    Phetchakul, Toempong
    This research presents a combat system with weapons, laser guns and electronic armor. Practicing firearms tactics results in shooting and maneuvering skills. The system consists of a laser gun that can determine the amount of ammunition used. The target of the armor has a sensor that receives laser light emitted by the gun. The guns and targets are controlled via a wireless network with a Node Micro Controller Unit (NodeMCU) connected to broker and can be displayed via computers, mobile phones and tablets. The IoT system uses protocol MQTT, the system used to store data on both sides of the device for response to the loss of network connection. The training is a gun fight between two players. The training is gun fighting between two players shooting guns against each other. The referee, commander and the audience can track the score of both players in real time. The training is safe to reduce the accidents of the practice also reduces the cost of training and can be practiced both indoors and outdoors.