Solution for Data Acquisition Module

The data acquisition module is the core front-end unit of industrial automation and IoT systems. It is responsible for collecting signals from various on-site sensors and equipment, converting physical quantities such as temperature, pressure, liquid level and switch status into standard digital signals, and transmitting them to controllers, gateways or cloud platforms via industrial buses. It provides an accurate and reliable data foundation for equipment control, remote monitoring and data analysis.

I. Applicable Scenarios of the Solution

1. Industrial Process Measurement and Control: Real-time collection and monitoring of process parameters including temperature, pressure, flow rate and liquid level.

2. Equipment Condition Monitoring: Collection of operating current, voltage, rotational speed and vibration data of motors, fans and pump units.

3. Environmental Monitoring System: Collection and upload of parameters such as temperature and humidity, gas concentration, dust concentration and water quality.

4. IoT Platform Connection: Provide standardized data input for industrial gateways and cloud platforms to realize equipment networking.

5. Legacy Equipment Renovation: Install data acquisition modules on traditional equipment to achieve low-cost digital upgrading.

6. Multi-industry Adaptation: Applicable to intelligent manufacturing, HVAC, water treatment, new energy, environmental protection equipment and other industries.

II. Core Products and Functions

1. Analog Acquisition Module

Supports 4-20mA/0-10V standard signal input, expandable to 16/32 channels. It features high acquisition accuracy and good linearity, adopts signal isolation and anti-interference design, and is compatible with various pressure, flow and liquid level transmitters.

2. Digital Input Acquisition Module

Supports NPN/PNP dry contact signal input with optoelectronic isolation between channels. It supports counting and pulse signal acquisition, and adapts to signals of various on-site switches, relays and limit sensors.

3. Temperature Acquisition Module

Enables direct signal acquisition of thermocouples (Type K/S/J) and thermal resistors (PT100/PT1000), with built-in cold junction compensation and an accuracy up to ±0.1℃. It is suitable for temperature monitoring scenarios such as drying ovens, kilns and reaction kettles.

4. Communication and Transmission Function

Comes with standard RS485 interface and supports Modbus RTU/TCP protocols, which can be directly connected to PLCs, industrial gateways and configuration software for real-time data upload. Ethernet interface is optional to support remote configuration and online upgrading.

5. Industrial-grade Protection and Stability

Adopts wide voltage power supply, optoelectronic isolation between channels and anti-electromagnetic interference design, and supports overvoltage/overcurrent/surge protection. It adapts to harsh industrial environments with high and low temperature, humidity and dust, ensuring long-term stable operation.

6. Data Preprocessing Function

Supports signal filtering, range conversion, engineering unit conversion and over-limit alarm setting. It can complete simple data processing locally on the module to reduce the computing pressure of the host computer.

III. System Architecture Solution

1. On-site Perception Layer: Various sensors and transmitters output analog, digital and temperature signals.

2. Data Acquisition Layer: The data acquisition module completes signal collection, conversion and preprocessing.

3. Transmission Layer: Data is transmitted to PLCs, industrial gateways or local servers via RS485/Ethernet.

4. Application Layer: Realize data monitoring, curve recording, alarm push, data analysis and remote control.

IV. Advantages of the Solution

1. High-precision Acquisition: Equipped with high-resolution ADC chips, it delivers high acquisition accuracy and excellent stability, meeting industrial measurement and control requirements.

2. Compatibility with Multiple Signal Types: Supports various signal types including analog, digital and temperature signals, adapting to different on-site equipment.

3. Industrial-grade Reliability: Optoelectronic isolation and anti-interference design enable it to adapt to harsh industrial environments without drift during long-term operation.

4. Standard Protocol Connection: Supports universal protocols such as Modbus for seamless connection with PLCs, configuration software and IoT platforms.

5. Flexible Expansion and Controllable Cost: Modular design allows selection of channel quantity and signal type as needed, reducing project renovation costs.

V. Customized Services

We provide one-stop services including module selection and adaptation, acquisition scheme design, protocol development, and on-site installation and commissioning according to customers' on-site signal types, channel quantities, communication requirements and application scenarios, meeting personalized data acquisition needs of projects in different industries and scales.

Welcome to contact our technical team for more details or customized solutions.