A fencing training device including: a first part configured to be coupled to a fencing weapon; a second part configured to be coupled to a lower portion of a fencer's body; and a retractable connector disposed between the first and second parts. Also provided is a method of training a fencer to perform a lunge and a fencing training system for providing feedback to a fencer regarding improper technique.

A protective mask includes a main frame body made of magnesium alloy and having an imaginary vertical central line. The main frame body has a plurality of first rods arranged along the central line, a plurality of second rods, and at least one first protrusion. Each of the first rods has spaced-apart first front and rear surfaces, and two opposite first connecting surfaces interconnecting the first front and rear surfaces. A thickness between the first front and rear surfaces is larger than a thickness between the first connecting surfaces. Each of the second rods is connected between two adjacent ones of the first rods. The first protrusion protrudes from the first front surface of one of the first rods.

A protective mask includes a main frame body made of magnesium alloy and having an imaginary vertical central line. The main frame body has a plurality of first rods arranged along the central line, a plurality of second rods, and at least one first protrusion. Each of the first rods has spaced-apart first front and rear surfaces, and two opposite first connecting surfaces interconnecting the first front and rear surfaces. A thickness between the first front and rear surfaces is larger than a thickness between the first connecting surfaces. Each of the second rods is connected between two adjacent ones of the first rods. The first protrusion protrudes from the first front surface of one of the first rods.

A motion tracking device for tracking athletic movement for accurate competitive scoring, the device having a nine-axis inertial measurement unit comprising a three-axis magnetometer, a three-axis accelerometer and a three-axis gyroscope and at least one other type of sensor.

There is provided herein circuitry and methods for applications including touch detection and, in embodiments, low rate communication such as for secure device authentication. The method uses a circuit having a first device having a first pair of unconnected plates and an edge source coupled therebetween. The circuit further comprises a second device having a second pair of respective unconnected plates and a charge sensor coupled therebetween. The method for touch detection comprises applying at least one differential edge between the first pair of unconnected plates using the edge source and detecting touch by coherently (i.e. in time) sensing an imbalance in a near field channel formed between the plates and an output signal of the charge sensor. The present method/circuit has various applications including for touch detection in fencing and secure device authentication employing both touch detection and bidirectional cryptographic communication between key and secure devices.

Disclosed herein is an anti-shaking fencing mask equipped with air pads. The anti-shaking fencing mask includes: a fencing mask body configured to protect the head of a wearer in a fencing competition; a plurality of air pads configured to be provided inside the fencing mask body and to expand when air is injected thereinto; and an air injector configured to inject air into the air pads. When air is injected via the air injector, the air pads expand, come into close contact with the head of the wearer, and prevent shaking within the fencing mask body.

Disclosed herein is a fencing mask equipped with a score light indicator device. The fencing mask includes: a fencing mask body configured to protect the head of a fencer in a fencing competition; a forehead protector configured to be provided inside the fencing mask body and to protect the forehead of the fencer; and a lighting module configured to be located between the inside of the mask body and the forehead protector. The lighting module includes a plurality of light sources, and the light sources constituting the lighting module selectively emit light in response to electric signals generated by a fencing weapon that is used in fencing.

Disclosed herein is a fencing mask equipped with a score light indicator device. The fencing mask includes: a fencing mask body configured to protect the head of a fencer in a fencing competition; a forehead protector configured to be provided inside the fencing mask body and to protect the forehead of the fencer; and a lighting module configured to be located between the inside of the mask body and the forehead protector. The lighting module includes a plurality of light sources, and the light sources constituting the lighting module selectively emit light in response to electric signals generated by a fencing weapon that is used in fencing.

A smart vehicle flock navigation system includes a plurality of smart vehicles configured to follow a leader smart vehicle, wherein the leader smart vehicle is configured to follow a target vehicle or a target driving plan; each smart vehicle being equipped with: obstacle detection and avoidance capabilities; vehicle-to-vehicle communication means for transmitting information about obstacles and evasive actions to following smart vehicles; a flock control module for adjusting the driving path of the smart vehicle flock based on transmitted obstacle information; a flocking behavior algorithm based on three independent rules: Separation, Alignment, and Cohesion, controlling the motion of each smart vehicle within the flock; and a distributed flocking operation mechanism utilizing wireless network communication for coordinating the behavior of the smart vehicle flock.

An Internet of Thing (IoT) device includes a body with a processor, a camera and a wireless transceiver coupled to the processor.