Engineering Scope
The development of low-power soil moisture monitoring terminals is oriented to the use requirement of "farmland needs to collect soil moisture and temperature at multiple depths". 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 multi-probe polling, branch power supply, scheduled sampling, threshold reporting, local caching and installation parameter configuration.
Power Supply and State Scheduling
Start the probes in sequence and wait for stability, verify the readings and cache them, and upload them according to cycles or limit-breaking events.
Data and System Integration
Clear connections and data formats around multi-depth soil probes, serial protocols, and shunt power supplies, and define recording, transmission, confirmation, and abnormal status.
Prototypes, Testing and Deliverables
Form the probe interface, shunt power supply circuit, depth number and collection record, and focus on verifying the probe preheating, interface shutdown and leakage, and the matching of collection times and battery capacity.
System Architecture and Operation
Start the probes in sequence and wait for stability, verify the readings and cache them, and upload them according to cycles or limit-breaking events.
- Interface composition: multi-depth soil probe, serial protocol, shunt power supply.
- 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 soil medium, installation and calibration affect the measurement results and successful acceptance cannot be based on communication alone.
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 | Farmland needs to collect soil moisture and temperature at multiple depths; provide typical usage procedures, sampling and upload times, target battery life and response requirements. |
| Product interface and structure | Multi-depth soil probe, serial protocol, shunt power supply; 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 | The probe interface, shunt power supply circuit, depth numbering and acquisition record; the scope of hardware, source code and third-party components are clearly stated in the statement of work. |
| Functional verification | Start the probes in sequence and wait for stability, verify the readings and then cache them, upload them according to cycles or limit-crossing events; record the input, output and recovery results of each state. |
| Power consumption verification | The probe is preheated, the interface is turned off for leakage, and the number of acquisitions matches the battery capacity. 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.
Power 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 EngineeringLow-Power LoRa/LoRaWAN Node Development
LoRa/LoRaWAN low-power node development services implement sending and receiving windows, confirmation, retransmission and network access recovery, and deliver firmware, network parameters, message records and field test reports. 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
Can multiple probes be powered off and put into sleep mode at the same time?+
It is necessary to check the start-up time and power-down behavior of each probe to avoid reverse power supply through the bus; when multiple channels are started at the same time, the battery voltage drop needs to be verified.
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 multi-depth soil probe, serial protocol, and branch power supply, 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 probe interface, branch power supply circuit, depth number and acquisition record; the prototype material, structure, platform, external testing 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
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