Sensor-Enabled Training Running Shoe with Laser Stride Guide

The problem

Runners trying to improve their form often rely on wrist-worn watches or phone apps that estimate pace and distance but cannot feel how the foot actually strikes the ground. Cadence and stride length are usually reviewed after a run on a screen, making it hard to correct posture mid-stride. According to the patent, the goal is a shoe that records comprehensive running data—cadence, stride, posture, route and foot-strike force—and simultaneously guides the runner in real time through visual and audible cues.

The solution

1. The shoe consists of a sole (1) and a vamp (2) fixed together.
2. Inside the sole, four pressure sensors (3) are placed at the left-front, right-front, left-rear and right-rear corners to measure landing force distribution across the foot.
3. At the front of the sole, a guiding laser emitter (4) is mounted on a spherical universal adjuster (a hollow ball cover with a damping ball center) so the beam angle can be aimed manually. It projects a straight guide line onto the ground ahead of the runner to set a visual stride-length target.
4. An internal control circuit houses a central control module connected to a three-axis accelerometer, three-axis gyroscope, three-axis magnetometer, vibration sensor, clock module, memory module, GPS module, Bluetooth module, buzzer and infrared sensor.
5. The accelerometer, gyroscope and magnetometer work together to determine the foot’s acceleration, angular velocity and orientation, allowing the system to reconstruct the running trajectory. The vibration sensor triggers on each footfall to calculate cadence alongside the clock module.
6. The buzzer emits rhythmic tones to pace the runner’s cadence audibly. The infrared sensor detects whether the shoe is being worn; when removed, it signals the central module to enter a power-saving rest state.
7. A lithium battery with a power management module and charging port supplies energy to all components.

Who it is for

• Athletic footwear brands looking to integrate hardware-based coaching features directly into a running shoe rather than relying solely on companion apps.
• Sports academies and university track programs that need objective foot-strike data from multiple athletes during practice sessions without attaching external pods.
• Physical therapy clinics focused on gait retraining, where therapists require precise pressure maps of the forefoot and heel during walking or jogging drills.
• Consumer electronics companies exploring smart footwear as a product category, using this architecture as a reference platform for sensor integration.

How it works

The main parts

Using the shoe

1. Put on the shoe - the infrared sensor detects the foot and wakes the central control module from its power-saving state.
2. Aim the laser - rotate the ball center inside the spherical universal adjuster until the projected line sits at the desired distance ahead of the toe. Damping friction holds the position.
3. Start running - the four pressure sensors record left/right forefoot and heel loads on every step. The vibration sensor registers each impact.
4. Follow the cues - keep your foot landing on or near the projected laser line to maintain the target stride length; match your steps to the buzzer’s rhythm to hold a steady cadence.
5. Review the data - after the run, the Bluetooth module syncs the memory module’s logs (pressure maps, IMU trajectory, GPS route, cadence counts) to a paired device for analysis.
6. Take off the shoe - the infrared sensor no longer detects the foot, and the central module powers down the active circuits automatically.

Applications

Track and field sprint training

Sprinters working on stride length consistency can use the laser line as a physical marker on the track surface. Instead of relying on a coach shouting distances, the athlete sees exactly where the next footfall should land. The four corner pressure sensors confirm whether the drive phase is generating symmetrical force through the forefoot.

Distance running cadence drills

Marathon and half-marathon runners often aim for a specific step rate to improve efficiency. The onboard buzzer provides a continuous metronome beat independent of headphones or phone speakers. Because the vibration sensor triggers directly from foot impact, the cadence reading reflects actual ground contacts rather than arm swings measured by a wrist watch.

Gait rehabilitation in clinical settings

Physical therapists treating patients recovering from lower-limb injuries need precise weight-bearing data. The separated left-front, right-front, left-rear and right-rear sensors show exactly which quadrant of the foot is accepting load during walking or light jogging. Therapists can download the logs via Bluetooth after a treadmill session to track symmetry improvements over weeks.

University sports science research

Kinesiology departments studying biomechanics benefit from having acceleration, gyroscopic and magnetometer data captured simultaneously with plantar pressure. The combined IMU data allows researchers to reconstruct the three-dimensional path of the foot through the gait cycle. Local storage ensures no data packets are dropped due to wireless interference during lab trials.

Youth athletic development programs

Young runners learning proper form may not yet use smartphones during practice. The self-contained laser guide and buzzer give immediate feedback without requiring a screen. Coaches can set the laser distance to match age-appropriate stride targets, letting the athletes focus purely on matching the visual and audio cues.

Where it is less suitable

• Casual daily walking - the laser guide and high-frequency sensor polling consume battery faster than basic step counters, making it excessive for general lifestyle tracking.
• Trail running on uneven terrain - projecting a flat laser line onto rocks, roots or mud is impractical, and the rigid sensor housing inside the sole may limit natural flex on technical surfaces.
• Wet weather racing - while the sole encloses the electronics, competitive racing shoes prioritize minimal weight and water drainage over embedded hardware protection.