Engineering Scope
The low-power GNSS asset locator is developed to meet the usage requirement of "turnover boxes and machines need to update their positions when moving". 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
Develop mobile wake-up, positioning scheduling, positioning timeout, trajectory cache, hierarchical upload and electronic fence interfaces.
Power Supply and State Scheduling
Reduce the positioning frequency when stationary, and position according to tasks when moving; retain the status after timeout and wait for the next window.
Data and System Integration
Clarify the connection and data format around the GNSS module, motion sensor, communication module and antenna, and define recording, transmission, confirmation and abnormal status.
Prototypes, Testing and Deliverables
Form positioning scheduling, timeout strategy, trajectory cache and test records in different environments, focusing on verifying the exit strategy when there is no indoor positioning, satellite search energy, reporting frequency and positioning error.
System Architecture and Operation
Reduce the positioning frequency when stationary, and position according to tasks when moving; retain the status after timeout and wait for the next window.
- Interface composition: GNSS module, motion sensor, communication module and antenna.
- 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
Positioning accuracy, positioning success rate and battery life are independently verified. The communication format does not represent positioning accuracy.
Define power targets together with functional requirements. Battery-life estimates must specify the battery, temperature, operating cycle, event frequency and network conditions. Keep estimates separate from continuous-operation test results.
Project Inputs
| Data category | Startup data |
|---|---|
| business work cycle | Turnover boxes and machines need to update their positions when moving; provide typical usage procedures, sampling and upload times, target battery life and response requirements. |
| Product interface and structure | GNSS modules, motion sensors, communication modules and antennas; for existing products, provide schematics, a bill of materials (BOM), firmware and prototypes. |
| Batteries and site conditions | Provide battery model, power supply range, cut-off voltage, 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 | Positioning scheduling, timeout strategy, trajectory caching and test records in different environments; the scope of hardware, source code and third-party components are clearly stated in the statement of work. |
| Functional verification | Reduce the positioning frequency when stationary, and position according to tasks when moving; retain the state after timeout and wait for the next window; record the input, output and recovery results of each state. |
| Power consumption verification | The exit strategy, satellite search energy, reporting frequency and positioning error when there is no indoor positioning are verified separately. Fix the battery side measurement point to record the energy from the full task cycle until the device returns to sleep. |
| 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.
Battery 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 EngineeringLow-Power State Machine and Fault Recovery Development
Low-power state machine and exception recovery development services, design failure exit, bounded retry, persistence and restart recovery, delivery of state diagrams, code, configuration and fault injection records. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeSpecialist EngineeringNB-IoT/LTE-M Power Saving Mode Integration
NB-IoT/LTE-M power saving mode adaptation service, requesting and checking power saving parameters, linking sampling reporting and downlink windows, processing mode is unavailable, delivering module configuration, state machine, network log and corresponding current waveform. The scope of the project is determined based on the target equipment, existing data and acceptance conditions.
Explore the ScopeSpecialist EngineeringIntermittent GNSS Positioning and Motion Wake-Up
GNSS intermittent positioning and mobile wake-up development services, arrange positioning startup, auxiliary information, timeout and mobile wake-up, handle invalid positions, deliver positioning scheduling code, status messages and environment classification test records. 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
Will it continue to search for stars when positioning cannot be achieved indoors?+
Set the positioning deadline and retry plan, and distinguish between the location not being updated and the device losing contact; reports should include positioning status to avoid using historical coordinates as the current location.
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 GNSS module, motion sensor, communication module and antenna, 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 positioning scheduling, timeout strategy, trajectory caching, and test records in different environments; 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
The power saving mode needs to check the network grant and the actual entry state, and the network search and retry under weak coverage should be measured separately. Cellular Power Consumption Analysis Reference
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