Product Overview
Response frame (e.g. reading temperature of -10.1 ℃ and humidity of 65.8% RH)
Functional characteristics
- Integrated design of multiple collection devices: Easy to install, Integrated wind speed, Wind direction, Temperature and humidity, Noise, PM2.5, PM10, CO2, Multiple functions such as atmospheric pressure.
- Ultrasonic principle for measuring wind speed and direction: No wind speed limit for startup, Zero wind speed operation, 360°comprehensive, Can simultaneously obtain wind speed and direction data.
- Noise collection: High precision noise measurement, Range up to30dB~120dB.
- PM2.5AndPM10Collection: Unique dual frequency data acquisition and automatic calibration technology, Consistency achievable±10%.
- CO2Measurement: Range0-5000ppm, High resolution1ppm.
- Temperature and humidity measurement: Swiss imported measurement unit, High accuracy.
- Wide range of atmospheric pressure: 0-120kPa, Suitable for various altitudes.
- stable485signal communication: Adopt specialized485Circuit, Communication stability.
- Built in electronic compass: No directional requirements during installation, Horizontal installation is sufficient.
Main technical parameters
- Power supply: DC power supply (10-30VDC)
- Maximum power consumption: 1.2W (RS485Output)
- Accuracy:
- Wind speed: ±(0.2m/s±0.02*v) (vFor actual wind speed)
- Wind direction: ±3°
- Humidity: ±3%RH (60%RH, 25℃)
- Temperature: ±0.5℃ (25℃)
- Atmospheric pressure: ±0.15kPa@25℃ 101kPa
- Noise: ±0.5dB (Reference pitch accuracy, 94dB@1kHz)
- PM2.5: ±3%FS (@100μg/m3, 25℃, 50%RH)
- CO2: ±(50ppm+3%F·S) (25℃)
- Light intensity: ±7% (25℃)
- Range:
- Wind speed: 0-60m/s
- Wind direction: 0-359°
- Humidity: 0%RH~99%RH
- Temperature: -40℃~+80℃
- Atmospheric pressure: 0-120kPa
- Noise: 30dB~120dB
- PM10 PM2.5: 0-1000μg/m3
- CO2: 0-5000ppm
- Light intensity: 0~20ten thousandLux
- Long term stability:
- Temperature: ≤0.1℃/Year
- Humidity: ≤1%/Year
- Atmospheric pressure: -0.1kPa/Year
- Noise: ≤3dB/Year
- PM10 PM2.5: ≤1%/Year
- CO2: ≤1%/Year
- Light intensity: ≤5%/Year
- Response time:
- Wind speed: 1s
- Wind direction: 1s
- Temperature and humidity: ≤1s
- Atmospheric pressure: ≤1s
- Noise: ≤1s
- PM10 PM2.5: ≤90s
- CO2: ≤90s
- Light intensity: ≤0.1s
- Communication: RS485Output, StandardModBusCommunication protocol
Product selection
- RS-CZQXZ-1-CX: Integrated shell, Magnetic installation
System framework diagram
Size description
Installation instructions
Interface description
Communication between the data acquisition device and the onboard meteorological station
- RS485Output, StandardModBusCommunication protocol
Basic communication parameters
| Compilation Code | 8 Bit binary |
| Data bits | 8 Position |
| Parity check bit | None |
| Stop position | 1 Position |
| Error verification | CRC (Redundant cyclic code) |
| Baud rate | 2400bit/s , 4800bit/s , 9600 bit/s Can be set up, The factory default is 4800bit/s |
Definition of data frame format
use ModBus-RTU Communication protocol, The format is as follows::
Initial structure ≥4 Byte time
Address code = 1 Byte
Function code = 1 byte
Data area =N Byte
Error verification = 16 Position CRC Code
End the structure ≥4 Byte time
Address code: The starting address of the transmitter, It is unique in communication networks (Factory default 0x01) .
Function code: Function indication of instructions issued by the host, This transmitter only uses function codes 0x03 (Read register data) .
Data area: The data area is specific communication data, Note High byte data comes first 16bits Code!
CRC Two byte checksum: User Manual for Vehicle mounted Meteorological Station.
Host query frame structure V1.0
Address code:
| Function code | Register starting address | Register length | Low byte checksum | High byte checksum | Byte |
| 1 Byte | 1 Byte | 2 Byte | 2 Byte | 1 Byte | 1 Slave response frame structure |
Address code:
| Function code | Effective byte count | Data Zone 1 | Data Zone 2 | data District | Low byte checksumN High byte checksum | Byte | Byte |
| 1 Byte | 1 Byte | 1 Byte | 2 Byte | 2 Byte | 2 Byte | 1 Description of communication register address | 1 The contents of the register are shown in the following table |
support
Function code (Register address03/04Or configure the address) :
| Content | PLC Or configure the address | Content | Operation | Definition explanation |
| 500 | 40501 | Wind speed value | Read only | Actual value 100 Double |
| 501 | 40502 | Wind power | Read only | Actual value (The wind level value corresponding to the current wind speed) |
| 502 | 40503 | Wind direction (0-7 File) | Read only | Actual value (To the north is 0, Increase the value clockwise, To the east is 2) |
| 503 | 40504 | Wind direction (0-360 ° ) | Read only | Actual value (To the north is 0 °Increase the degree clockwise, To the east is 90 ° ) |
| 504 | 40505 | Humidity value | Read only | Actual value 10 Double |
| 505 | 40506 | Temperature value | Read only | Actual value 10 Double |
| 506 | 40507 | Noise level | Read only | Actual value 10 Double |
| 507 | 40508 | PM2.5 Value (If selected CO2 For type devices, this register is CO2 Value) | Read only | Actual value |
| 508 | 40509 | PM10 Value (If selected CO2 If it is a type device, this register is empty) | Read only | Actual value |
| 509 | 40510 | Atmospheric pressure value (Company kPa,) | Read only | Actual value 10 Double |
| 510 | 40511 | 20W of High value Lux Bit value 16 Read only | Actual value | of Low value |
| 511 | 40512 | 20W Bit value Lux read-only 16 Place value | read-only | Actual value |
Examples and explanations of communication protocols
give an example: Read transmitter equipment (Address 0x01) Real time wind speed values
Inquiry frame
| Address code | Function code | Starting address | Data length | Low byte checksum | High byte checksum |
| 0x01 | 0x03 | 0x01 0xF4 | 0x00 0x01 | 0x C4 | 0x04 |
Response frame
| Address code | Function code | Return the number of valid bytes | Wind speed value | Low byte checksum | High byte checksum |
| 0x01 | 0x03 | 0x02 | 0x00 0x7D | 0x78 | 0x65 |
User Manual for Vehicle mounted Meteorological Station V1.0
Real time wind speed calculation:
Wind speed: 007D (hexadecimal)= 125 => Wind speed = 1.25 m/s
give an example: Read transmitter equipment (Address 0x01) The wind direction value
Inquiry frame
| Address code | Function code | Starting address | Data length | Low byte checksum | High byte checksum |
| 0x01 | 0x03 | 0x01 0xF6 | 0x00 0x01 | 0x65 | 0xC4 |
Response frame
| Address code | Function code | Return the number of valid bytes | Wind direction value | Low byte checksum | High byte checksum |
| 0x01 | 0x03 | 0x02 | 0x00 0x02 | 0x39 | 0x85 |
Wind direction calculation:
Wind direction: 0002 (hexadecimal)= 2 => Wind direction = east wind
give an example: Read transmitter equipment (Address 0x01) Temperature and humidity values
Inquiry frame
| Address code | Function code | Starting address | Data length | Low bit of verification code | High bit of verification code |
| 0x01 | 0x03 | 0x01 0xF8 | 0x00 0x02 | 0x44 | 0x06 |
Response frame (For example, reading the temperature as- 10. 1℃ , The humidity is65.8%RH)
| Address code | Function code | Effective byte count | Humidity value | Temperature value | Low bit of verification code | High bit of verification code |
| 0x01 | 0x03 | 0x04 | 0x02 0x92 | 0xFF 0x9B | 0x5A | 0x3D |
Temperature: When the temperature is below0℃Upload in the form of a supplementary code
0xFF9B (hexadecimal)= - 101 => Temperature = - 10. 1℃
Humidity:
0x0292(hexadecimal)=658=> Humidity = 65.8%RH
Conclusion
Vehicle mounted weather station is a multifunctional device, High precision meteorological observation equipment, Suitable for mobile transportation vehicles, Has broad application prospects. Its integrated design, The stable communication protocol and rich meteorological data collection function make it an ideal choice for environmental monitoring. Easy installation, Easy to operate, Strong long-term stability, A reliable partner for mobile weather monitoring.
Leave a Reply