Engineering Scope
The development of low-power handheld electrical measuring instruments is oriented to the use requirement of "portable electronic instruments need to save power during intermittent measurements", 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
Develop measurement front-end, ADC, display, range control, idle detection and status recovery by range.
Power Supply and State Scheduling
When entering measurement, establish the offset and wait for stabilization, output valid readings, and wait according to rules when idle.
Data and System Integration
Clear connections and data formats around measurement front-end, protection, range switching, ADC and display, and define recording, transmission, confirmation and abnormal status.
Prototypes, Testing and Deliverables
Form front-end data, acquisition firmware, range status and post-recovery measurement records, focusing on verifying front-end bias and stabilization time, measurement accuracy, input protection and shutdown leakage.
System Architecture and Operation
When entering measurement, establish the offset and wait for stabilization, output valid readings, and wait according to rules when idle.
- Interface composition: measurement front end, protection, range switching, ADC and display.
- 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
Input protection, applicable measurement categories and calibration requirements are determined by the complete device.
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 | Portable electronic instruments need to save power during intermittent measurements; provide typical usage procedures, sampling and upload times, target battery life, and response requirements. |
| Product interface and structure | Measurement front end, protection, range switching, ADC and display; 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 | Front-end data, acquisition firmware, range status and post-recovery measurement records; the scope of hardware, source code and third-party components are clearly stated in the statement of work. |
| Functional verification | When entering the measurement, establish the offset and wait for stabilization, output valid readings, and wait according to the rules after idle; record the input, output and recovery results of each state. |
| Power consumption verification | Front-end bias and settling time, measurement accuracy, input protection and shutdown leakage. 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.
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 EngineeringPower Domain and Peripheral Power-Gating Development
Multi-power domain and peripheral power-off control development services, split power domains, design switches, signal isolation and recovery timing, and deliver power trees, timing diagrams, switching circuits, drive and shutdown test 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 EngineeringLow-Power Display and Actuator Control
Display and actuator low-power control development services, control refresh, backlight, motor or valve timing, handle execution failures and power surges, deliver driver code, circuit modifications, parameters and single-action energy 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 the auto-shutdown feature interrupt continuous testing?+
Idle conditions should be defined based on measurement changes, operations and external communications, and continuous measurement modes and clear status prompts consistent with the business should be provided.
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 measurement front end, protection, range switching, ADC and display, and then determine the modification and regression testing scope.
How to determine the cost and period of this project?+
The evaluation is split based on the delivery items such as front-end data, acquisition firmware, range status and post-recovery measurement records; 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
The configuration of GPIO should be checked together with the external circuit, sleep mode and wake-up status; the actual parameters are subject to the target chip data and the whole board test. GPIO and power state design reference
Online
Phone
WeChat
Top