Modbus smoke sensor

描述

(1) Core Function

1. Smoke Detection and Alarm: The sensor accurately senses the concentration of smoke particles by detecting the light scattering effect in the darkroom. When the smoke concentration exceeds the set threshold (0.5dB/m to 1dB/m), an audible and visual alarm is immediately triggered, with an alarm sound of ≥ 80 decibels, ensuring clear hearing even in complex environments.
2. Modbus Communication Integration: Supports standard Modbus RTU protocol and can quickly connect to various monitoring systems, fire protection systems, and smart home platforms through RS485 communication interface, achieving real-time data transmission and remote monitoring.

(II) Product Advantages

1. Efficient Detection Performance: Adopting photoelectric smoke sensing technology, the detection chamber is designed with a special "maze" structure to effectively shield external light interference, ensuring that only smoke particles can enter and induce light scattering effects, improving the accuracy and sensitivity of detection.
2. Wide coverage detection area: The detection area of a single sensor can reach 40 square meters, suitable for various scenarios such as homes, offices, hotels, etc., reducing the number and cost of device deployment.
3. Insect proof Design: The sensor detection cover adopts an insect proof structure to prevent insects from entering and affecting the detection performance, ensuring long-term stable operation of the equipment.
4. Alarm State Memory: Equipped with alarm state memory function, it can record previous smoke alarm states even if power is turned off or restarted, facilitating subsequent troubleshooting and processing.
5. Remote Control and Networking: Supports remote mute button control, which can remotely stop the alarm sound through the button. Optional Loramish wireless communication module enables fast wireless networking and flexible adaptation to different installation environments.

III. Application Scenarios

This smoke sensor is widely applicable in the following scenarios:

1. HomeInstalled in living rooms, bedrooms, kitchens, and other areas, it monitors smoke levels in real-time to ensure the safety of family members' lives and property.
2. office buildingDeploy in offices, corridors, conference rooms, and other places, integrate with building automation systems to achieve centralized monitoring and management.
3. HotelApplied to guest rooms, corridors, restaurants, and other areas, meeting hotel fire safety requirements and providing reliable smoke alarm solutions.
4. Banks, hospitals, schoolsInstall in densely populated areas such as business halls, wards, classrooms, etc. to ensure timely detection of fire hazards and safeguard public safety.
5. Airports, museums, laboratoriesProvide precise smoke detection and alarm functions for the protection of high-value equipment and items, preventing significant losses caused by fires.
6. factoryInstalled in production workshops, warehouses, and other areas, linked with the factory's fire protection system to achieve rapid response to fire accidents, reduce production interruptions and property losses.

In addition, this product is also suitable for professionals such as weak current integrators and smart home solution engineers to build intelligent and automated fire alarm systems.

4, Product specifications

(1) Basic parameters

• Product NameSmoke sensor
• Model: IE01
• Product weight: 100g
• Overall Dimensions: Φ101*H50MM
• input voltage: DC12V
• Installation methodCeiling installation
• Alarm ConcentrationLevel II smoke detector, alarm for smoke concentration>0.5dB/m,<1dB/m

(2) Technical specifications

• Communication method: RS485 Modbus RTU
• Execution Standard: GB20517-2006
• quiescent current: ≤10uA
• Alarm current: ≤80mA
• sound pressure level≥ 80db (3 meters in front)
• Operating Temperature: -10℃~50℃
• Relative humidity: ≤ 95% RH (40 ℃± 2 ℃)

V. Installation and commissioning

(1) Installation environment

1. Space requirements:AlarmSuitable for places with a space height of less than 6m, with a protection area of 40 square meters. It is recommended to install it in the center of the ceiling to ensure that smoke, heat, and combustion products can quickly rise and be detected.
2. Distance requirement: Keep at least 30 centimeters away from lighting fixtures or decorations, and at least 15 centimeters away from walls and corners to avoid obstruction and interference.
3. Hall Installation: If the length of the hall exceeds 12 meters, it is recommended to install an alarm at each end of the hall to ensure full coverage.

(II) Installation steps

1. Drilling: Drill two installation holes on the ceiling at a distance of 50mm-68mm.
2. Fixed Base: Use expansion plugs and self tapping screws to secure the base of the alarm to the ceiling, ensuring a secure installation.
3. Connect power supply: Connect the DC12V power supply to the input port of the alarm, ensuring correct polarity.
4. Self check Test: Press and hold the self check button, and the alarm indicator light should light up and emit an alarm sound, indicating that the device is working properly. If the indicator light does not light up or there is no alarm sound, please check if the installation and connection are correct.

(III) Debugging and Configuration

1. Address Setting: By modifying the register address (0000), the communication address of the device can be set. The address range is 01-FE, and FF is the broadcast address.
2. Baud rateadjustment: According to actual communication needs, the 485 baud rate can be modified through register 0003. The supported baud rates include 115200, 76800, 57600, 38400, 19200, 14400, 9600, 4800, 2400, and 1200.
3. Wireless Communication Configuration: After selecting the Loramish wireless communication module, the wireless baud rate can be set through register 0004 using the same configuration method as 485 baud rate.
4. Alarm State Memory: By default, the alarm state is not memorized. To enable the memory function, register 0010 can be set to 00 01.
5. Active reporting function: The active reporting function can be turned on or off through registers 0016 and 0017, and can be muted and tested.

VI. Function Register Address

(I) Read Holding Register (4x)

(II) Write Single Register

7. Self owned Communication Protocol

(1) Data Frame Format

1. Custom Data Sending: 1A 24 02 01 BB 00 E3 01 XX XX XX XX XX XX (up to 24 bytes) 0F
   • Example: Sending Custom Data 11 22 33 44 55 66 77 88
   • Sending Frame: 1A 24 12 02 01 BB 00 E3 01 11 22 33 44 55 66 77 88 0F
   • configuration success feedback: BC BC
2. Enable active data reporting function: 1A 24 12 02 BC 01 00 E3 0F
3. Disable active data reporting function: 1A 24 12 02 BC 00 E3 0F
4. Modify device address: 1A 24 12 02 01 F8 E7 D6 1A 24 02 02
   • Return frame: 1A 24 12 02 BC (new address+BC BC BC)

(II) Protocol description

1. Frame header and footer: Each frame starts with 1A and ends with 0 At the end of F, ensure the integrity and recognizability of the data.
2. Address and Command: The frame contains the device address and command bytes, used to identify the target device and operation type.
3. Data Fields: Depending on the specific function, data fields can include custom data, configuration parameters, and other information.
4. Verification and Feedback: Confirm the successful configuration through BC BC feedback to ensure the reliability and stability of communication.

8. Maintenance and upkeep

(1) Daily maintenance

1. Clean surface: Regularly wipe the sensor surface with a clean soft cloth to avoid the accumulation of dust and dirt that may affect detection performance.
2. Check installation: Ensure that the sensor is securely installed without any looseness or displacement. If there are any abnormalities, they should be promptly re fixed.
3. Test Function: Conduct a self check test once a month, long press the self check button to check if the alarm sound and indicator light are working properly.

(II) Regular Maintenance

1. Performance Test: Conduct a comprehensive performance test once every quarter to check whether the sensor's detection sensitivity, alarm accuracy, and other indicators meet the requirements.
2. Electrical Inspection: Check if the power connection is secure, if the voltage is stable, and ensure that the equipment is powered on normally.
3. Communication Test: Check whether the communication between the sensor and the upper computer is normal and whether the data transmission is stable through the monitoring system or debugging software.

(III) Fault Handling

1. No Alarm Sound: Check if the power connection is correct and if the alarm is powered on normally; Check if the speaker is damaged and replace it promptly if necessary.
2. Frequent false alarm: Check if there are interference sources in the installation environment, such as strong light, high temperature, steam, etc; Check if the detection cover is obstructed or contaminated, clean and adjust it.
3. Communication Exception: Check if the RS485 communication line is connected correctly and if there are any disconnections or short circuits; Check if the communication parameter settings are correct by debugging the software, and reconfigure if necessary.

9. FAQ

(1) Alarm does not work

• Possible reasonsThe power supply is not connected, the power supply voltage is abnormal, and the equipment is damaged.
• SolutionCheck if the power connection is correct and use a multimeter to measure if the power voltage is within the range of DC12V. If the power supply is normal but the device still does not work, please contact after-sales service for inspection and repair.

(2) Frequent false alarms from the alarm system

• Possible reasonsThere are interference sources in the installation environment, contamination of the detection cover, and high sensitivity.
• SolutionCheck if the installation location meets the requirements and avoid interference sources such as lighting fixtures and air conditioning vents. Clean the surface of the detection cover to ensure there is no dust or dirt. If there are still false alarms, the sensitivity setting can be appropriately reduced by debugging the software.

(3) The alarm cannot communicate with the upper computer

• Possible reasonsCommunication line failure, incorrect communication parameter settings, device address conflicts.
• SolutionCheck if the RS485 communication line is connected correctly, and if there are any broken wires, short circuits, or poor contacts. Confirm that the communication parameters (baud rate, data bits, parity bits) are consistent with the settings of the upper computer. Check if the device address is unique. If there is a conflict, please reset the address.

10, Appendix

(1) Technical specification sheet

(2) Fault code table

(3) Installation Tool List