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Ultrasonic Integrated Multi-Parameter Meteorological Station
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Product Introduction
1.1 Product Overview
The integrated meteorological station can widely be applied to environmental monitoring, wind speed, wind direction, temperature and humidity, noise collection, PM2.5 and PM10, CO2, atmospheric pressure, light, etc., the equipment adopts the standard ModBus-RTU communication protocol, RS485 signal output, the communication distance can be as far as 2000 meters, the data can be uploaded to the customer's monitoring software or PLC configuration screen, etc., and also supports secondary development.
The equipment with built-in electronic compass selection does not require the direction during installation, just ensure the horizontal installation. It is suitable for use in mobile occasions such as maritime ships and truck transportation, and there is no direction requirement during installation.
This productis widely applicable tovarious occasions where it is necessary to measure environmental temperature and humidity, noise, air quality,CO2, atmospheric pressure, light, etc.,is safe, reliable, and has a beautiful appearance,is easy to installand durable.
1.2 Functional Features
This product is small in size and light in weight, made of high-quality anti-ultraviolet material, with a long service life, using a high-sensitivity probe, stable signal, and high precision. The key components use imported devices, stable and reliable,with a wide measuring range, good linearity, good waterproof performance, convenient to use, and easy to install,long transmission distance and other features.
Adopt a multi-collector device integrated design, easy to install.
The wind speed and direction are measured by the ultrasonic principle, without a starting wind speed limit, zero wind speed operation, no angle limit, 360° all around, and the wind speed and direction data can be obtained at the same time.
Noise acquisition, precise measurement, range up to 30dB~120dB.
PM2.5
and
PM10
Simultaneous collection, range:
0-1000
μg/m3
, resolution
1
μg/m3
, unique dual-band data acquisition and automatic calibration technology, consistency can reach
±
10%
.
CO2 range: 0-5000ppm, resolution 1ppm.
Measuring environmental temperature and humidity, the measuring unit is imported from Switzerland, the measurement is accurate.
Wide range of 0-120kPa pressure measuring range, can be applied to various altitudes.
Adopt a dedicated 485 circuit, communication is stable.
The device with built-in electronic compass has no direction requirement during installation, and it can be installed horizontally.
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The performance data stated above was obtained under test conditions using our company's test system and software. Our company reserves the right to change the design features and specifications for the continuous improvement of the product, without prior notice.
1response time isτ63 time.
2The wind speed refers to the wind speed at the sensor's internal sensitive material, and the test environment wind speed is10-2m/ms when the wind direction is perpendicular to the sensor's collection port, the wind speed at the sensor's internal sensitive material is about1m/s.
1.4 Product Selection
注意： select PM elements cannot be selected elements, only one can be selected at the same time.
2. Equipment size
-1HEquipment size diagram (unit:mm)
3. Equipment installation instructions
3.1 Inspection before equipment installation
Equipment list:
■IntegratedWeather station equipment1Unit
■Warranty card, certificate of conformity
■Installation screws one pack (-1optional accessories)
■Six-point wrench (-1Hoptional accessories)
3.2 Installation method
The device without electronic compass is installed as shown in the picture below, and the device with built-in electronic compass only needs to be installed horizontally.
Embracing seat installation:
-1Selection installation method
-2HSelection of installation method
-1HSelection of installation method
3.3 Interface Description
DC power supply10-30VPower supply.485Pay attention to the signal line connectionA/BThe two lines cannot be connected in reverse, and the addresses of multiple devices on the bus cannot conflict.
|
Color line |
Explanation |
|
|
Power supply |
Brown |
Power positive (10-30V DC) |
|
Black |
Power negative |
|
|
Communication |
Yellow (green) |
485-A |
|
Blue |
485-B |
3.4 485 Field wiring instructions
Multiple485models of equipment are connected to the same bus, there are certain requirements for on-site wiring, please refer to the 485Equipment On-site Wiring Manual in the reference package.
4. Configuration software installation and use
4.1 Software selection
Open the package, select"Debugging Software"---"485Parameter Configuration Software", find the "485Parameter Configuration Tool"
Open it.
4.2 Parameter settings
①、Select the correctCOMport (check inside "My Computer - Properties - Device Manager - Ports"COMports), the following picture lists the drive name of several different485converters.
②、Connect only one device and power it on, click the test baud rate in the software, the software will test the current device's baud rate and address, the default baud rate is4800bit/s,the default address is0x01.
③、Modify the address and baud rate according to the usage requirements, and you can also query the current functional status of the device.
④、If the test is not successful, please re-check the equipment wiring and485driver installation.
5. Communication protocol
5.1 Basic communication parameters
|
Code ? |
8bit |
|
Data bit |
8bit |
|
Parity bit |
None |
|
Stop bit |
1position |
|
Error checking |
CRC(Redundant Circular Code) |
|
Baud rate |
Can be set, the factory default is4800bit/s |
5.2 Data Frame Format Definition
AdoptModBus-RTU communication protocol, format as follows:
Initial structure ≥4 bytes of time
Address code = 1 Byte
Function code = 1 Byte
Data area = N bytes
Error detection = 16 bit CRC code
End structure ≥4 bytes time
Address code: The starting address of the transducer, which is unique in the communication network (factory default0x01).
Function code: Indication of the function of the command issued by the host.
Data Area: The data area is specific communication data, note16bitsThe high byte of the data is in front!
CRC code: a two-byte checksum.
Host Inquiry Frame Structure:
|
Address code |
Function code |
Register start address |
Register length |
Check code lowbyte |
Check code highByte |
|
1Byte |
1Byte |
2bytes |
2bytes |
1Byte |
1Byte |
From the machine response frame structure:
|
Address code |
Function code |
Number of effective bytes |
Data area one |
Data Second District |
DataNArea |
Check code low byte |
Check code high byte |
|
1Byte |
1Byte |
1Byte |
2bytes |
2bytes |
2bytes |
1Byte |
1Byte |
5.3 Communication Register Address Description
The content of the register is shown in the table below (supporting function code 03/04):
|
Register address |
PLCor configuration address |
Content |
Support function code |
Definition explanation |
|
500 |
40501 |
Wind speed value |
0x03/0x04 |
Actual value10times |
|
501 |
40502 |
Wind power |
0x03/0x04 |
Actual value The wind force (corresponding to the current wind speedvalue) |
|
502 |
40503 |
Wind direction (0-7gear) |
0x03/0x04 |
Actual value (the north direction is0, the value increases clockwise, the east direction is2) |
|
503 |
40504 |
Wind direction (0-360°) |
0x03/0x04 |
Actual value (the north direction is0° clockwise increase degrees, the east direction is90°) |
|
504 |
40505 |
Humidity value |
0x03/0x04 |
Actual value10times |
|
505 |
40506 |
Temperature value |
0x03/0x04 |
Actual value10times |
|
506 |
40507 |
Noise value |
0x03/0x04 |
Actual value10times |
|
507 |
40508 |
PM2.5value |
0x03/0x04 |
Actual value |
|
508 |
40509 |
PM10value |
0x03/0x04 |
Actual value |
|
509 |
40510 |
Atmospheric pressure value (unitkPa,). |
0x03/0x04 |
Actual value10times |
|
510 |
40511 |
20WofLuxvalue high16bit value |
0x03/0x04 |
Actual value |
|
511 |
40512 |
20WofLuxvalue low16bit value |
0x03/0x04 |
Actual value |
|
512 |
40513 |
20WIllumination value (unit: hundredLux) |
0x03/0x04 |
Actual value |
|
513 |
40514 |
Optical rain gauge value (unit:mm) |
0x03/0x04 |
Actual value10times |
|
515 |
40516 |
Total solar radiation |
0x03/0x04 |
Actual value |
Content of the calibration register
|
Register address |
Content |
Support function code |
Definition explanation |
|
6001 H |
Ultrasonic wind speed zero register |
0x06 |
Write0xAA， wait10s， device zero |
|
6002 H |
Rainfall Zero Register |
0x06 |
Write0x5A, Zero the rainfall value |
5.4 Example of communication protocol and explanation
5.4.1 Example: Reading the real-time wind speed value from the sensor device (address 0x01)
Inquiry frame
|
Address code |
Function code |
Start address |
Data length |
Check code lowbyte |
Check code highByte |
|
0x01 |
0x03 |
0x01 0xF4 |
0x00 0x01 |
0x C4 |
0x04 |
Response frame
|
Address code |
Function code |
Return the number of valid bytes |
Wind speed value |
Check code lowbyte |
Check code highByte |
|
0x01 |
0x03 |
0x02 |
0x00 0x7D |
0x78 |
0x65 |
Real-time wind speed calculation:
Wind speed：007D (Hexadecimal)= 125 => Wind speed = 12.5 m/s
5.4.2 Example: Reading the wind direction value from the sensor device (address 0x01)
Inquiry frame
|
Address code |
Function code |
Start address |
Data length |
Check code lowbyte |
Check code highByte |
|
0x01 |
0x03 |
0x01 0xF6 |
0x00 0x01 |
0x65 |
0xC4 |
Response frame
|
Address code |
Function code |
Return the number of valid bytes |
Wind direction value |
Check code lowbyte |
Check code highByte |
|
0x01 |
0x03 |
0x02 |
0x00 0x02 |
0x39 |
0x85 |
Wind direction calculation:
Wind direction：0002 (Hexadecimal)= 2 => Wind direction = East wind
5.4.3 Example: Reading the temperature and humidity values from the sensor device (address 0x01)
Inquiry frame
|
Address code |
Function code |
Start address |
Data length |
Check code low order |
Check code high bit |
|
0x01 |
0x03 |
0x01 0xF8 |
0x00 0x02 |
0x44 |
0x06 |
Response frame (e.g. read the temperature as-10.1℃, humidity as65.8%RH).
|
Address code |
Function code |
Number of effective bytes |
Humidity value |
Temperature value |
Check code low order |
Check code high bit |
|
0x01 |
0x03 |
0x04 |
0x02 0x92 |
0xFF 0x9B |
0x5A |
0x3D |
Temperature: When the temperature is lower than0℃, it is uploaded in complement form
0xFF9B (Hexadecimal)= -101 => Temperature = -10.1℃
Humidity:
0x0292(Hex)=658=> Humidity = 65.8%RH
6. Frequently Asked Questions and Solutions
The device cannot connect toPLCor computer
Possible reasons:
1)There are multipleCOMports on the computer, the selected port is incorrect.
2)Device address error, or there are devices with duplicate addresses (all factory defaults are1).
3)baud rate, parity mode, data bits, stop bits error.
4)The host polling interval and the waiting time for a response are too short, both need to be set to200msor more.
5)485A,Bline is reversed.
6)Too many devices or too long wiring, power supply should be nearby, add485amplifier, and increase120Ω termination resistor.
7)USBto485 driver not installed or damaged.
8)Equipment damage.
Attention:To ensure the accuracy of the equipment, please regularly clean the lower plane of the measuring area of the equipment,Keep it clean without accumulated dust or other foreign objects.
Main technical indicators
|
DC power supply (default) |
10-30VDC |
|
|
Maximum power consumption |
RS485Output |
1.2W |
|
Precision |
Wind speed |
±(0.2m/s±0.02*v)(vis the true wind speed)（60%RH,25℃） |
|
Wind direction |
±3°（60%RH,25℃） |
|
|
Humidity |
±3%RH(60%RH,25℃) |
|
|
Temperature |
±0.5℃（25℃） |
|
|
Atmospheric pressure |
±0.15kPa@25℃ 101kPa |
|
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Noise |
±0.5dB(at reference tone, 94dB@1kHz |
|
|
PM2.5 |
Particle counting efficiency: |
|
|
CO2 |
±(50ppm+ 3%F·S) (25℃) |
|
|
Irradiance |
±7%(25℃) |
|
|
Total solar radiation |
≤±3%@150W/m² |
|
|
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 |
|
|
Irradiance |
0~20ThousandLux |
|
|
Total solar radiation |
0~1800W/m² |
|
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Long-term stability |
Temperature |
≤0.1℃/y |
|
Humidity |
≤1%/y |
|
|
Atmospheric pressure |
-0.1kPa/y |
|
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Noise |
≤3dB/y |
|
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PM10; PM2.5 |
≤1%/y |
|
|
CO2 |
≤1%/y |
|
|
Irradiance |
≤5%/y |
|
|
Total solar radiation |
≤±3% |
|
|
Response time1 |
Wind speed |
1s |
|
Wind direction |
1s |
|
|
Temperature |
≤25s（1m/swind speed2） |
|
|
Humidity |
≤8s（1m/swind speed2） |
|
|
Atmospheric pressure |
≤2s |
|
|
Noise |
≤3s |
|
|
PM10; PM2.5 |
≤1990s |
|
|
CO2 |
≤1990s |
|
|
Irradiance |
≤2s |
|
|
Total solar radiation |
≤10s |
|
|
Output signal |
RS485Output |
RS485(standardModBuscommunication protocol) |
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