Engineering Scope
The development of indoor photovoltaic low-power sensing nodes is oriented to the use demand that "indoor measuring points cannot be wired and it is inconvenient to replace electricity". 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
First measure the energy that can be harvested at the installation site, and then develop energy harvesting circuits, energy storage, cold start, sensor acquisition and low-frequency communications.
Power Supply and State Scheduling
Collect energy and wait for the energy storage to reach the threshold, and then accumulate energy after completing a measurement and communication.
Data and System Integration
Clear connections and data formats around indoor photovoltaic devices, energy harvesting chips, energy storage and sensors, and define recording, transmission, confirmation and abnormal status.
Prototypes, Testing and Deliverables
Form energy testing, cold start plan, energy storage design and node prototype records, focusing on verifying lighting duration and spectrum, dark energy storage, cold start and balance of payments; first make a feasibility prototype.
System Architecture and Operation
Collect energy and wait for the energy storage to reach the threshold, and then accumulate energy after completing a measurement and communication.
- Interface composition: indoor photovoltaic devices, energy harvesting chips, energy storage and sensors.
- 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
First verify the energy conditions at the installation site, and then agree on sustainable functionality and update cycles.
Energy acquisition and load budgets should be confirmed simultaneously with functional indicators. Record the energy availability period, energy storage devices, temperature, working cycle and communication conditions, and provide budget results and actual measurement records of energy balance and expenditure for the complete cycle.
Project Inputs
| Data category | Startup data |
|---|---|
| business work cycle | Indoor measuring points cannot be wired and are inconvenient to replace batteries; provide typical usage procedures, sampling and upload times, target battery life and response requirements. |
| Product interface and structure | Indoor photovoltaic devices, energy harvesting chips, energy storage and sensors; for existing products, provide schematics, a bill of materials (BOM), firmware and prototypes. |
| Energy and site conditions | Provide energy measurement or on-site working conditions, energy storage devices, auxiliary battery configuration (if any), temperature, installation method and communication conditions. |
| 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 | Energy testing, cold start solutions, energy storage design and node prototype records; the scope of hardware, source code and third-party components are clearly stated in the statement of work. |
| Functional verification | Collect energy and wait for the energy storage to reach the threshold, and then accumulate energy after completing a measurement and communication; record the input, output and recovery results of each state. |
| Power consumption verification | Illumination duration and spectrum, dark energy storage, cold start and balance of payments; first make a feasibility prototype. Measurements are made on the energy harvesting output and load power supply sides respectively, and the input energy, load consumption and energy storage changes of the complete working cycle are recorded. |
| Exceptions and retesting | Covers applicable situations such as low battery, continuous triggering, loss of connection or restart, and retains original logs, waveforms and versions. |
Specialist Engineering Services
Select the required modules based on the existing product. Interfaces and responsibilities are defined in the project scope.
System Power Budget and Low-Power Architecture Design
Complete machine power budget and low-power architecture design services, allocate energy according to status, distinguish typical, peak and abnormal consumption, and deliver power consumption status tables, budget calculation tables, risk lists and test plans. 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
Is regular office lighting sufficient to power the unit?+
It depends on the spectrum, illuminance, lighting time, energy collection area and load. It needs to be measured with the actual installation location and target device, and cannot be judged solely based on the brightness of the room.
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 indoor photovoltaic devices, energy harvesting chips, energy storage and sensors, 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 deliverables such as energy testing, cold start solutions, energy storage design, and node prototype records; the prototype materials, structure, platform, external tests, and new functions are listed separately, and quotations and nodes are formed after the requirements and interfaces are confirmed.
Engineering References
Energy input, cold starts, energy storage losses and average load determine the sustainable operating range. Energy Harvesting Design Reference
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