Smart Police Wearable
Real-Time Officer Health Monitoring & SOS Alert System
- Enclosure Rating
- IP68
- Design target
- Health & Environmental
- 7 Sensors
- SOS Alert Time
- < 3 sec
- Bench-tested
Wearables, vehicles and robotics
Wearable device engineering for health-monitoring, fitness and safety products: miniaturised PCB design with IP67/IP68 sealing, ECG, PPG and SpO2 sensor integration, low-power Bluetooth LE, ANT+ and NFC connectivity, power management and iOS/Android SDKs, with medical wearables designed to IEC 60601-1 and IEC 62304 requirements and documentation structured for the manufacturer's ISO 13485 quality system.
Every project is quoted as a fixed-scope proposal within 3–5 business days of a discovery call. Discuss your product
Smart Police Wearable
Real-Time Officer Health Monitoring & SOS Alert System
Specifications
Capabilities
End-to-end development of smart wearables with miniaturized PCB design, ergonomic form factors, and IP67/IP68 waterproofing.
Biosensor integration for ECG, PPG and SpO2, and integration of third-party CGM data over BLE, designed to IEC 60601-1 and IEC 62304 requirements for clinical use, with pre-compliance support.
Ultra-low-power Bluetooth LE 5.x, ANT+ and NFC connectivity, with encrypted BLE links (LE Secure Connections) and data handling designed to support HIPAA and GDPR obligations.
Robust security implementations protecting sensitive health and personal data.
Power management with wireless charging and energy harvesting, and battery life engineered to the product target: days for continuous PPG/ECG, months for low-duty sensors.
AI-powered motion tracking with 9-axis IMU fusion and machine learning for precise activity recognition.
Process
Analyse the requirements, check technical feasibility and component availability, and agree the milestones.
Deliverable: Technical requirements document, project milestones and risk assessment
Detailed system design and component selection, with design review, signal-integrity and power analysis.
Deliverable: System architecture, schematic, PCB layout and firmware architecture
Prototype hardware fabrication and firmware development, with code reviews and hardware verification.
Deliverable: Prototype hardware, firmware codebase, test procedures and documentation
Functional, environmental and regulatory testing against the requirements.
Deliverable: Test results report, compliance documentation and release package
Planning
Start with a non-confidential summary of your product and the milestone you need to reach next.
AFE choice, noise, electrodes, isolation, IEC 60601 and IEC 62304, and 510(k), MDR and CDSCO pathways for medical biosignal wearables.
SoC platforms, ANC/ENC, antennas in tiny enclosures, charging cases, LE Audio, certification, costs and the legal side of re-engineering.
Consider sensing, calibration and integration choices for wearable and embedded motion applications.
Proof
Smart Police Wearable
State police department, India
Medical Wearable
US-based digital health startup
Wearable EEG Headset
Japanese neurotech startup
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Fitness-wearable product company
Neonatal Vitals Wearable
Medical-device client, India
Multi-Connectivity Pet Tracker
European pet technology company
EMG Sensor Front-End
Indian medical-device company
TWS Earbuds Electronics
Consumer-audio brand
FAQ
Most commercial wearables target IP67 or IP68, with fitness watches often rated to 5ATM (50 meters) for swim tracking. Achieving these ratings requires ultrasonic welding or adhesive bonding of enclosure seams, laser-welded sensor windows, silicone gaskets on button mechanisms, and hydrophobic nano-coatings on exposed connectors and microphone ports.
We integrate a wide range of biosensors including PPG for heart rate and SpO2, ECG for cardiac monitoring, bioimpedance for body composition, temperature sensors, accelerometers/gyroscopes for activity tracking, and electrodermal activity sensors. Advanced sensor fusion provides accurate health metrics.
Wearable battery optimization involves ultra-low-power microcontrollers, efficient power management ICs, duty-cycled sensing, BLE optimization, and power-aware firmware design. Battery life depends on the sensors, display and duty cycle: days for continuous PPG/ECG, months for low-duty sensors. Our medical-wearable case study targets 14 days (design target).
Yes, we develop medical wearables designed to IEC 62304 (software lifecycle) and IEC 60601-1 (electrical safety) requirements, with design documentation structured so your ISO 13485 quality system can absorb it, and support for 510(k) submission documentation. Our process also includes risk management per ISO 14971.
Flexible PCB design for wearables uses polyimide substrates that bend to conform to body contours, requiring careful attention to bend radius constraints, trace routing perpendicular to fold lines, and stiffener placement under component pads. We design flex and rigid-flex stackups that balance mechanical durability with electrical performance, using hatched ground planes to improve flexibility.
Bluetooth Low Energy (BLE 5.x) is the dominant protocol for wearables due to its ubiquitous smartphone compatibility, low power consumption, and sufficient throughput for health data streaming. For specific use cases, ANT+ serves multi-device sport sensor networks, Thread enables smart home integration, and ultra-wideband (UWB) provides centimeter-level spatial awareness for proximity-based features.
Wearable UI/UX design must account for extremely limited screen real estate (often under 1.5 inches), glanceable interaction patterns requiring information delivery in under 5 seconds, and input modalities restricted to small touch targets, rotary crowns, or gesture recognition. We design with high-contrast color palettes for outdoor visibility and leverage haptic and audio feedback to reduce visual dependency.
Continuous health monitoring algorithms use PPG signals processed through bandpass filters and peak detection to extract heart rate, heart rate variability, and SpO2 readings, with motion artifact removal via accelerometer-correlated adaptive filtering. Advanced implementations run lightweight ML models on-device to detect arrhythmias or classify sleep stages in real time while maintaining multi-day battery life.
HIPAA applies in the US where a covered entity or business associate handles protected health information; GDPR in Europe and the DPDP Act 2023 in India cover personal and biometric data; and where electronic records support FDA-regulated activities, 21 CFR Part 11 applies. We design on-device encryption (AES-256), pseudonymised data pipelines, explicit consent flows and data minimisation to support these obligations.
Wearable miniaturization employs chip-on-board and system-in-package integration to consolidate multiple ICs into a single module, combined with 01005-size passive components and multi-layer HDI PCBs with microvias. We also use system-in-package modules, stacked rigid-flex and flexible interconnects to utilize the full interior volume of curved enclosures rather than being constrained to a single planar board.
Haptic feedback in wearables uses linear resonant actuators or piezoelectric actuators driven by specialized haptic driver ICs, which synthesize vibration patterns from a library of waveforms or custom-designed sequences. We tune haptic responses to match notification types while keeping actuator power draw under 100mW average, and design mounting structures that efficiently couple vibration to the skin contact surface.
Wireless charging via Qi or proprietary magnetic puck alignment is the dominant approach for sealed wearables, using inductive coils at 100-200kHz to deliver 1-5W through waterproof enclosures without exposed contacts. We also design pogo-pin cradle chargers for higher power transfer efficiency, and for extended-wear medical devices, implement energy harvesting from thermoelectric generators or small photovoltaic cells.
Each project is quoted as a fixed-scope proposal: a statement of work with milestones, deliverables and pricing, sent within 3–5 business days of the discovery call. The price depends on the requirements, how mature the design is, technical complexity, the number of prototype iterations and the validation scope. Longer engagements can also run as a retainer or a hybrid of both. For budgeting before you contact us, our hardware development cost benchmarks and the PCB design, firmware and IoT cost guides give indicative ranges with their assumptions stated. They are planning ranges, not quotes.
It depends on the scope and on what already exists when we start. As planning ranges from our cost benchmarks: a single PCB layout takes 2–6 weeks per board and embedded firmware 4–16 weeks. A connected (IoT) product takes 3–12 months from concept to a production-ready design, and a regulated medical device 12–24 months to a 510(k) submission-ready package; from idea to mass production, a typical connected product takes 9–18 months. The proposal sets out a dated milestone plan, and you receive weekly progress updates during the project.
You do. Our contracts assign the intellectual property in the project work product (schematics, PCB design files, firmware source code and documentation) to you on payment, and we hand over the source files, not only fabrication outputs or compiled binaries. The exact terms are set out in the signed agreement for each engagement.
Yes. We sign a mutual NDA before any technical discussion of your project. Send your standard NDA or use ours; we return it signed within one business day.
Yes. We are based in Hyderabad, India, and work with product teams in India, the United States, the United Kingdom, Germany, Japan, Australia, the Middle East and other markets. Our office hours are 10:30–19:00 India Standard Time (UTC+5:30), Monday to Saturday, and we schedule design reviews across time zones, typically from US Pacific to Central European time. Japan is 3.5 hours ahead of India, so our first four hours overlap the Japanese afternoon. Prototypes and documentation ship by international courier such as DHL or FedEx. Our hardware outsourcing guide covers what to agree before an international project starts.
Yes. We prepare the manufacturing release package — fabrication and assembly drawings, the BOM with approved manufacturers, programming files and test specifications — and hand it over to the contract manufacturer (EMS) you choose. If you have not chosen one, we help you evaluate candidates through technical capability assessments and a pilot build. See manufacturing support.
No. Rapid Circuitry does not hold ISO 9001, ISO 13485 or other certificates. Our processes are aligned with ISO 9001:2015, and we design products to the requirements of the standards that apply to them — for example IEC 60601-1 and IEC 62304 for medical devices (with design documentation structured so your ISO 13485 quality system can absorb it) and IEC 61000 for EMC — and we specify IPC-A-610 workmanship classes for assembly. We prepare the product and its documentation for certification testing at accredited laboratories; the certificate or approval is issued for your product by the laboratory, notified body or regulator.
A short, non-confidential description of the product and what it must do (sensors, connectivity, on-device processing), the target production volume and unit cost, the markets and regulations it must meet (for example FDA, CE or FCC), your timeline, and what already exists: a concept, a proof of concept, schematics, PCB files or firmware. After the NDA, the next step is a 30-minute discovery call with the engineers who would work on the project, followed by the fixed-scope proposal. Send a project brief to begin.
Explore
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