Engineering Scope
The development of low-power portable electronic scales is oriented to the usage requirement of "battery electronic scales need to start measurement according to usage status", 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 weighing bridge circuit excitation, sampling, tareing, display, automatic sleep and key or load wake-up.
Power Supply and State Scheduling
After detecting the usage requirements, establish the incentive, complete the zero point and stability judgment, and then output the weight.
Data and System Integration
Clear connections and data formats around the weighing bridge, excitation, ADC, display and wake-up inputs, and define recording, transmission, confirmation and abnormal status.
Prototypes, Testing and Deliverables
Form the bridge driver, weighing firmware, tare and standby logic, restore reading records, and focus on verifying the bridge's continuous power consumption, zero point recovery, stable reading time and spurious wake-up from non-use status.
System Architecture and Operation
After detecting the usage requirements, establish the incentive, complete the zero point and stability judgment, and then output the weight.
- Interface composition: weighing bridge, excitation, ADC, display and wake-up input.
- 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
The weighing range, offset load and measurement error need to be verified in conjunction with the mechanical structure.
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 | Battery electronic scales need to start measurement according to usage status; provide typical usage procedures, sampling and upload times, target battery life and response requirements. |
| Product interface and structure | Weighing bridge, excitation, ADC, display and wake-up input; 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 | Bridge driver, weighing firmware, tare and standby logic, recovery reading record; the scope of hardware, source code and third-party components are clearly stated in the statement of work. |
| Functional verification | After detecting the usage requirements, establish incentives, complete zero point and stability judgments, and then output the weight; record the input, output and recovery results of each state. |
| Power consumption verification | The bridge continues to consume power, zero point recovery, stable reading time and spurious wake-up from non-use status. 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 EngineeringMCU Sleep and Wake-Up Firmware Development
MCU Sleep wake-up firmware development service, develops sleep entry conditions, wake-up determination, clock recovery and driver reconstruction, and delivers state machine, firmware, wake-up timing and function regression 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
How to verify zero point recovery after the weighing bridge is powered off?+
Warm-up, temperature drift and mechanical zeroing conditions should be checked, stability criteria before valid readings defined, and results compared using no-load and load sequences.
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 weighing bridge, excitation, ADC, display and wake-up input, and then determine the change and regression testing scope.
How to determine the cost and period of this project?+
The evaluation is split based on the deliverables such as bridge driver, weighing firmware, tare and standby logic, and recovery reading 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
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