Description:FIELD OF INVENTION
The present invention relates to personal grooming devices. Specially, the present invention relates to a smart beard trimmer. More particularly, the present invention relates to smart beard trimmer with artificial intelligence and bluetooth low energy (ble) based control. Particularly, the present invention relates to trimmer that integrates artificial intelligence (AI) and wireless communication for automated, symmetry-aware grooming control.
BACKGROUND
Conventional beard trimmers rely entirely on user perception for maintaining symmetry. Errors in judgment often lead to uneven trimming or over-trimming. Some smart trimmers allow basic app control, but none offer real-time AI-based facial symmetry detection integrated with trimming control logic. There is a clear need for a grooming device that can guide the user using real-time visual feedback and automatic actuation.
A published patent EP3513927B1 discloses an electronic beard trimmer that adapts to user-specific data, but it does not employ real-time symmetry detection using front-facing cameras, nor does it incorporate dynamic motor and guard control via BLE based on AI inference. Therefore, there exists a need for a personal grooming system that combines camera-based facial symmetry analysis, mobile AI processing, and direct BLE-based motor and feedback control in a closed-loop system.
The present invention solves the problem by providing an artificial intelligence integrated smart beard trimmer with bluetooth low energy-based control.
OBJECT OF THE INVENTION
The main object of the present invention is to provide an smart beard trimmer with artificial intelligence and bluetooth low energy (ble) based control.
It is one object of the present invention, wherein the said trimmer combines hardware control with artificial intelligence (AI) to enable precision beard grooming.
It is one object of the present invention, wherein Integration of facial symmetry detection using the smartphone’s selfie camera with real-time feedback to the trimmer device.
It is one object of the present invention, wherein the said trimmer comprises real-time firmware control responding to mobile app decisions.
It is one object of the present invention, wherein the app autonomously halts trimming via motor_off command upon detecting deviation from desired symmetry.
It is one object of the present invention, wherein the haptic vibration motor and dual LED indicators work in association with AI decisions to inform the user of trimming status.
It is one object of the present invention, wherein the app enables remote selection of trim intensity and length (light, medium, full), and electronically adjusts guard height without manual intervention.
It is one object of the present invention, wherein the said trimmer is highly compact, portable beard trimmer with tight integration between app intelligence and embedded control logic.
SUMMARY
The main aspect of the present invention is to provide a smart beard trimmer integrated with artificial intelligence and bluetooth low energy control comprises adjustable guard, Motor, Battery, bluetooth low energy module, Vibration motor, power button, LED indicator, and Charging port.
It is one aspect of the present invention, wherein the said trimmer is a handheld trimmer.
It is one another aspect of the present invention, wherein the blue tooth low energy module is attached with microcontroller.
It is another aspect of the present invention, wherein the said trimmer is configured to mobile application.
It is yet another aspect of the present invention, wherein the said application is configured to capture real-time images of the user's face using a front camera of user’s mobile.
It is even another aspect of the present invention, wherein the said microcontroller is connected to the motor, vibrator motor and LED indicator.
It is one aspect of the present invention, wherein the said electronically adjustable trimming guard is actuated using a servo motor.
It is another aspect of the present invention, wherein the said guard is connected to microcontroller and is positioned based on app-based trim mode selection via Bluetooth Low Energy commands.
It is one aspect of the present invention, wherein the mobile application and trimming device form a closed-loop feedback system for guided trimming.
It is another aspect of the present invention, wherein real-time AI feedback dynamically adjusts motor operation and user alerts.

BRIEF DESCRIPTION OF DRAWINGS
Figure 1 illustrates the front view of the trimmer, according to the present invention.
Figure 2 illustrates the overall connection loop of smart phone and trimmer, according to the present invention.

DETAILED DESCRIPTION OF INVENTION WITH REFERENCE TO ACCOMPANYING DRAWINGS
With reference to figures 1 and 2, the present invention relates to a smart beard trimmer integrated with artificial intelligence and bluetooth low energy control. The said trimmer comprises servo-controlled electronically adjustable guard 1, high-speed motor 2, Battery 3, bluetooth low energy module 4, coin vibration motor 5, power button 6, Red and green LED indicator 7, USB-C Charging port 8, microcontroller and Lithium-ion battery.
The said bluetooth low energy enabled trimmer device configured to a smartphone application that uses AI 9 to detect beard asymmetry using the front camera 10. The configured application sends BLE commands to stop the motor, trigger vibration feedback, and illuminate LEDs when asymmetry is detected. It also allows the user to wirelessly control trim intensity, guard height, and other features from within the app. Further the said trimmer enables a user to achieve balanced beard trimming with minimal manual intervention, enhanced precision, and automated correction in case of trimming deviation.

The said BLE module operates under BLE 5.0 protocol and supports command latency of less than 200 milliseconds. The app provides vibration and LED-based feedback for user alerts in response to AI decisions.
Component specification of the present invention
• Blade Type: Stainless steel, self-sharpening blades
• Motor: High-speed DC motor (8,000–10,000 RPM)
• Guard: Electronically adjustable (0.5mm – 10mm) using servo motor
• Battery: Rechargeable Li-ion battery (2000–3000mAh)
• Charging Port: USB-C with fast charging support
• Haptics: Vibration motor for feedback alerts (when auto-stop is triggered)
Hardware–Software Communication Flow
The smart beard trimmer system is composed of two tightly integrated subsystems: a mobile software application and an embedded hardware unit, which communicate over a Bluetooth Low Energy (BLE) link to execute real-time trimming actions guided by AI.
1. AI-Based Decision Engine (Mobile App)
The smartphone application is built to run a lightweight, on-device artificial intelligence (AI) model using frameworks such as MediaPipe, OpenCV, or TensorFlow Lite. The app accesses the smartphone’s front-facing camera to capture live video frames at ~10–30 frames per second (FPS). These frames are processed locally to detect beard outlines and facial symmetry landmarks using a trained AI model.

2. BLE Communication Protocol
Once the AI determines the state of beard symmetry, it constructs BLE command packets that are securely transmitted to the trimmer hardware using BLE 5.0. The smartphone acts as the central BLE device and the trimmer as a peripheral. The command protocol follows a simple structured format:
• {motor_on} or {motor_off}: toggles the high-speed trimming motor
• {guard_set: }: adjusts the electronically controlled trimming guard (e.g., 1 mm, 3 mm, 5 mm)
• {vibrate}: activates the vibration motor to alert the user
• {led:}: controls the LED status indicators (e.g., led:red, led:green)
• {status_read}: queries battery level or operational state
BLE characteristics are configured in Notify and Write modes. All commands are executed in <200ms latency to maintain real-time control.
3. Microcontroller Firmware (Trimmer Side)
The trimmer is equipped with a microcontroller such as ESP32 or nRF52840, which contains:
• A BLE stack to receive commands from the phone
• GPIO/PWM control logic to operate:
o DC motor driver
o Servo motor for guard adjustment
o Vibration motor driver
o LED driver circuit
Upon receiving a command, the microcontroller parses the instruction, updates internal flags, and triggers hardware interrupts or output signals to the respective peripheral devices.
4. Feedback Loop
If the system detects an asymmetry (e.g., right side longer than left), the AI model sends {motor_off} and {vibrate} along with {led:red} to pause trimming and alert the user. When symmetry is restored, it sends {motor_on} and {led:green} to resume.
5. Power & OTA
The hardware unit is powered by a rechargeable Li-ion battery (2000–3000mAh). The BLE firmware supports OTA (over-the-air) updates through a secured mobile command, allowing future improvements.
System Architecture Summary
The interaction between app and hardware is based on a closed-loop control system:
• AI captures, evaluates, and decides trimming status
• BLE acts as the secure communication channel
• Microcontroller executes the command
• User receives physical feedback via motor/vibration/LED
This architecture allows for safe, precise, and AI-guided grooming using a mobile-controlled smart trimmer.

Working of the device
• The first step is that the user opens the mobile app and starts a trimming session, wherein each session comprises a communication protocol such as:
-motor_state (on/off)
- guard_position (up/down)
- vibration_control (on/off)
- battery_status (read)
- trim_mode (light, medium, full)
• The second step is the front-facing camera of mobile captures a live video feed of the user's face. Now, an embedded AI model in the app, analyses the feed in real time to detect beard regularity. This AI-powered loop ensures precision trimming, avoiding over-trimming or asymmetry. The said AI model comprises 3D facial landmark detection using MediaPipe or OpenCV frameworks running on-device.
If irregularity is detected, the app sends BLE commands to:
o Stop the motor (motor_off)
o Trigger the vibration motor
o Illuminate the red LED
If the beard shape is restored, the green LED turns on, and trimming continues.
• The app also provides options to adjust guard height (0.5mm–10mm), trimming mode, and vibration alerts.
• The app continues to monitor symmetry and execute corrective BLE commands in real time.

, Claims:WE CLAIM
1. A smart beard trimmer integrated with artificial intelligence and bluetooth low energy control comprises adjustable guard, motor, battery, bluetooth low energy module, vibration motor, power button, LED indicator, and charging port;
Wherein the said trimmer is a handheld trimmer;
Wherein the blue tooth low energy module is attached with microcontroller;
Wherein the said trimmer is configured to mobile application;
Wherein the said application is configured to capture real-time images of the user's face using a front camera of user’s mobile;
Wherein the said microcontroller is connected to the motor, vibrator motor and LED indicator;
Wherein the said electronically adjustable trimming guard is actuated using a servo motor;
Wherein the said electronically adjustable guard can be set between 0.5 mm to 10 mm based on app selection; and
Wherein the said guard is connected to microcontroller and is positioned based on app-based trim mode selection via Bluetooth Low Energy commands.

2. The trimmer as claimed in claim 1, wherein the mobile application and trimming device form a closed-loop feedback system for guided trimming.
3. The trimmer as claimed in claim 1, wherein real-time AI feedback dynamically adjusts motor operation and user alerts.