Engineering Scope
NFC Battery-free sensing tags are developed to meet the usage requirement of "packaged devices that need to read the status on demand at close range", and the collection, processing, communication and power supply are designed as one set of products. The project can start from new main board development, existing firmware modification or designated module integration. The development scope is confirmed based on the target function, existing foundation and delivery requirements.
Interfaces and Product Integration
Evaluate power harvested from the reader field, the antenna, energy storage and sensor load. Develop the sampling, data interface and readout sequence.
Power Supply and State Scheduling
Power up within the reader field, then sample and provide results once sufficient energy is available.
Data and System Integration
Clear connections and data formats around NFC antennas, field power output, energy storage, sensors and data interfaces, and define recording, transmission, confirmation and abnormal status.
Prototypes, Testing and Deliverables
Form the antenna and power supply design, tag program, read and write data format and coupling test, focusing on verifying the specified reader/writer, distance, coupling, installation materials and single-time collected energy; it will not default to continuous operation after leaving the field source.
System Architecture and Operation
Power up within the reader field, then sample and provide results once sufficient energy is available.
- Interface composition: NFC antenna, field power output, energy storage, sensor and data interface.
- Work scheduling: Determine each status based on sampling, interaction and reception requirements, indicating which circuits continue to run.
- Exception handling: Define deadlines, bounded retries, and recovery behaviors for applicable communication, sensing, or execution tasks.
Design Conditions and Functional Limits
Continuous logging outside the reader field requires additional energy storage and a defined energy budget.
Specify the power conditions together with the readout requirements: reader or phone model, antenna coupling, mounting materials, temperature and sampling sequence. Record the energy budget separately from prototype measurements.
Project Inputs
| Data category | Startup data |
|---|---|
| business work cycle | The enclosed equipment needs to read the status on demand at close range; provide the reading process, single sampling content, reading frequency and response requirements. |
| Product interface and structure | NFC antenna, field power output, energy storage, sensor and data interface; for existing products, provide schematics, a bill of materials (BOM), firmware and prototypes. |
| Field sources and site conditions | Specify the target reader or phone, read distance and orientation, mounting materials, temperature range and permitted energy storage components. |
| Delivery and Responsibility | Clarify the scope of source code and design files, platform docking, number of prototypes, test conditions and third-party work. |
Delivery and Acceptance
| Delivery project | Verification method |
|---|---|
| Design and implementation | Antenna and power supply design, tag procedures, read and write data formats and coupling tests; the scope of hardware, source code and third-party components is clearly stated in the statement of work. |
| Functional verification | Power up within the reader field and sample once sufficient energy is available. Record the inputs, outputs and recovery behavior for each state. |
| Power consumption verification | Keep the reader, distance, orientation and mounting materials fixed. Measure voltage, current and energy per acquisition at the harvested-power output and storage nodes to validate startup and readout completion. |
| Exceptions and retesting | Test insufficient coupling, reader removal, interrupted reads and repeated entry into the reader field. Record data integrity, recovery behavior and the tested version. |
Specialist Engineering Services
Select the required modules based on the existing product. Interfaces and responsibilities are defined in the project scope.
Low-Leakage Hardware and PCB Development
Low-leakage hardware and PCB development services, checking static paths, protection devices, level translation and device quiescent current, delivering schematics, PCB source files, BOM, manufacturing files and node current records. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeSpecialist EngineeringBattery Power, Charging and State-of-Charge Management
Battery power supply, charging and power management development services, design conversion, charging and protection, determine power estimation and low battery threshold, deliver power circuit, parameter configuration, status interface and load test records. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeSpecialist EngineeringSolar and Energy Harvesting Power Supply Development
Solar energy and energy collection power supply development services, input measurement, cold start verification, energy storage threshold design and task scheduling, delivery of feasibility conclusions, energy balance sheets, circuit prototypes and operation records. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeSpecialist EngineeringLow-Power Sensor Acquisition Driver Development
Sensor low-power acquisition driver development service, develop single measurement, FIFO, interrupt and power supply control, retain the necessary stabilization time, and deliver driver source code, parameter description, sampling record and exception handling. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeSpecialist EngineeringSystem Power, Battery Life and Environmental Validation
Complete machine power consumption, battery life and environmental verification services, measuring state current, event energy, peak voltage drop and long-term business operation, delivering original waveforms, logs, calculation sheets, test reports and coverage. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeFrequently Asked Questions
What power supply conditions does the mobile phone need to meet when reading?+
It is necessary to verify the energy and communication window under the target mobile phone, distance, attitude and installation material, and design the energy storage and re-reading process if necessary.
Is it possible to develop only part of an existing product?+
Module development or power consumption optimization can be carried out according to the existing interface and modifiable range. For this product, you first need to check the NFC antenna, field power output, energy storage, sensors and data interfaces, and then determine the scope of changes and regression.
How to determine the cost and period of this project?+
The evaluation is split based on the deliverables such as antenna and power supply design, tag program, read and write data format and coupling test; the prototype materials, structure, platform, external tests and new functions are listed separately, and the quotation and milestones are formed after the requirements and interfaces are confirmed.
Engineering References
Validate harvested power with the actual antenna, reader, mounting arrangement and external load. NFC field source energy reference
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