DWM-51WS3 APRS weather station EVB board

DWM-51WS3 is high precision meteorological measurement module, which support to measure wind direction, wind speed, rainfall, temperature, humidity, pressure measurement mode, secondary development output with APRS data.

Features

DWM-51WS3 is high precision meteorological measurement module, which supports professional measurement mode, secondary development and application, and APRS data.

Support to measure wind direction, wind speed, rainfall, temperature, humidity, pressure

PMS5003PMS5003ST particulate matter sensor, automatic identification of PMS5003 PMS3003 PMS5003ST

Support output APRS data format (in UK)

Support professional measurement mode (metric system)

BH1750 light sensor support (customized)

Support for data validation

Supports 2 baud rate data outputs, 9600 and 2400

The maximum response frequency of wind speed is 1000Hz

Support 8K CPU, big data operation,

Support secondary development and protocol customization

Working voltage: DC 5V power supply reverse connection protection, micro power consumption: 5V / 0.1a, size: 24*69* 100mm

Integrated inlet temperature and humidity, air pressure two in one sensor

Integrated PE waterproof sensor cover

 Part Description

A PM2.5 air quality sensor module 

PM2.5 air quality sensor module interface: this interface is used to connect PMS5003 and PMS5003ST sensors

B Rainfall sensor interface

Rainfall sensor interface, the rainfall sensor is passive switching quantity, rainfall bucket reversal once =0.33mm

 C Wind speed and wind direction interface

Wind speed is a passive switching quantity, wind speed sensor, 1 revolution =2 pulses =2Hz

Calculation formula of wind speed: m/s=wind speed hz * 0.34

Wind direction: resistance network, equivalent to stepper potentiometer

There are NSWE direction marks on the wind shell.When installing, mark N pointing north.

D Data output interface

Note:

JP1 short =ARS inch mode,JP1 open = professional metric mode

JP2 short =2400 speed,JP2 open =9600 speed

Output a measurement at an interval of 0.5 seconds.

E LED

LED:

Synchronous flash when DAT sends data

TX sampling with wind speed, synchronous flashing

RX flashes synchronously with the rainfall sensor

F ISP Connector

Pin1 = 5 v Pin2 = RX Pin3 = TX Pin4 = GND

This interface is used to set parameters and is also used by ISP to upgrade firmware

At the same time, the interface will have partial debugging data output, 9600 rate.

G/H A/B Extensional Connector

51WS3 meteorological interface module data storage and calculation instructions

Rainfall: 51WS3 meteorological interface board has built-in 1440 bytes of dedicated rainfall data cache to record the rainfall sampling value per minute.

After rolling calculation, the rainfall values of the first minute, the first hour and the first 24 hours were obtained.

Wind speed: 51WS3 meteorological interface board has built-in 300 bytes of special data cache for wind speed, recording the real-time wind speed sampling value every second.

After rolling calculation, real-time wind speed, average wind speed in the first minute and maximum wind speed in the first five minutes were obtained.

Temperature: read temperature, humidity and air pressure data every 5 seconds

APRS data output format (Imperial alternative jumper, default) :

C000s000g000t082r000p000h48b10022 * 3 c

Output 38 bytes every 0.5 seconds, including line feed at the end of data (OD,OA)

Data analysis:

C000: wind direction Angle, unit: degree.

S000: first minute wind speed in miles per hour

G000: maximum wind speed in the first 5 minutes, in miles per hour

T086: temperature (Fahrenheit)

R000: rainfall in previous hour (0.01 in.)

P000: rainfall in the first 24 hours (0.01 in.)

H53: humidity (00% - 99%)

B10020: air pressure (0.1hpa)

*20 checksum, all character differences or results between A and * (excluding *)

Note 1:

The interface board will automatically detect whether the air pressure plate, temperature and humidity sensor is installed, and the data of the sensor not installed will be displayed as "...".

For example, if the temperature and humidity sensor and air pressure plate are not installed, the data will be output:

C000s000g000t...R000p000h..B...

The third-generation meteorological module supports automatic identification of particulate matter sensor PMS5003 PMS5003ST

The default data format, including calibration data format: c000s000g000t086r000p000h45b09963 * 31

When PMS5003 is installed, the data output is:

Including PM2.5 and validation data formats: c000s000g000t082r000p000h43b09985, 027035040023032040, *14

Professional measurement data output format (metric system) :

Short JP1=0 inch, open JP1=1 metric

After power on, enter the professional measurement mode, convenient for secondary development.

DATA interface 9600bps, 2400 bps.

Professional measurement data format:

A4095B000C0000D0000E0000F0000G0000H0000I0000J0000K0000L0281M576N10024 * 27

Output 74 bytes every 0.5 seconds, including line feed at the end of data (OD,OA)

Data analysis:

A0789: real-time measurement of wind direction AD value (0-4095)

B000: wind direction Angle value (direction 16)

C0000: real-time wind speed frequency 1Hz

D0000: real-time wind speed 0.1m /S

E0000: the average wind speed in the previous minute was 0.1m/s

F0000: the highest wind speed in the first 5 minutes is 0.1m/s

G0000: real-time rainfall bucket count, 0-9999, cycle count

H0000: number of buckets of rain in the previous minute, 0-9999

I0000: rainfall 0.1mm in the first minute

J0000: rainfall 0.1mm in the previous hour

K0000: rainfall 0.1mm in the first 24 hours

L0209: temperature (Celsius), 0.1 degrees, below zero, the first display symbol "-".

M703: humidity 0.1 (0% = 99%)

N10233 air pressure (0.1hpa)

*27 checksum, all character differences or results between A and * (excluding *)

51WS3 Calibration function

51WS3 supports the ability to calibrate and adjust data, which can be used when you need to adjust the original data values in some special circumstances.

51WS3 factory default is that temperature, humidity and air pressure are all original data output, that is, no addition or reduction.

1. Connect USB to TTL data line (optional), connect 51WS3, open general serial debugging software, select the correct port number and speed 9600.

2. Send the instruction AT+SET=T+000H+000B+0000 enter, that is, the setting is completed

Note: all setup commands require + ENTER.

Command: the AT + VER =?enter

Display the current firmware version number

Command: AT+SET=T+000H+000B+0000 enter

Description: add and subtract the original data of temperature, humidity and air pressure

Instruction,

The AT + SET = T + 000 h + 000 + 0000 b

T+000 represents the temperature +00.0 degrees (unit: Celsius), and the calibration range +-99.9

Note: this calibration value is metric degree Celsius.

H+000 represents the humidity degree +00.0%, and the calibration range +-99.9

Calibration addition, if the measurement of humidity + calibration value, more than 99.9%, then fixed to 99.9%

When the subtraction method is calibrated, if the calibration value of humidity > is measured, subtraction is allowed.

B+000 represents the pressure +000.0hpa, and the calibration range +-999.9hpa

For example:

Raw data: c000s000g000t082r000p000h49b09957

SET: AT+SET=T+000H-080B-1000 enter

New data: c000s000g000t082r000p000h41b08957

For more information about this module pls send mail to suport@dwmzone.com