For the main power distribution in my house, I also build a powersensor. The basic idea is the same as for this sensor. But the electric meter is already build into the distribution cabinet, so this power meter uses the so-called S0 bus of the power meter inside the cabinet.DSCF4078

The meter can count W/h summed up for all three power phases and the peak-to-peak voltage of one of the main powerlines entering my house.

The data is transmitted also directly to the data collecting web-site.The power and voltage values are sent every minute to the web-site. The administrative sensor are transmitted only every 10 minutes to the web.

Senors

The following sensors are provided by this sensor node:

01-09-2016 08-05-04

Uploads OK Number of successfull data uploads
Network restarts Number of WLAN reconnects etc.
Uploads failed Number of upload errors since the last WLAN reconnect
 VCC The internal power supply voltage
Netzspannung The main power peak-to-peak AC voltage
Netzteil The temperature of the build in power supply
Energieverbrauch The energie consumption of our house during the last measurement intervall, means 1 minute

The data can be displayed on the web site in various ways.

01-09-2016 08-14-22 01-09-2016 08-15-11

Hardware

Simple ABS cabinet. Powersupply is a compact MEANWELL AC/DC converter. The mains voltage is measured via a small transformer and some glue ciruits. The main processor is an arduino clone with onboard ESP-8266 WiFi.

DSCF4078 DSCF4080

Schematic

Schematic

The yellow squares are referenced in the measurement section!

Bill of material

Part

Value

Device

Package

Description

C1

330nF

C2.5/6

C2.5-6

CAPACITOR

C2

10uF

CE01A

CE01A

Electrolytic capacitor

D1

Power

DL03N

DL03N

LED

D2

WLAN

DL03N

DL03N

LED

D4

Pulse

DL03N

DL03N

LED

D5

ERROR

DL03N

DL03N

LED

D6

LIFE

DL03N

DL03N

LED

F1

T0,1A

SH22,5A

SH22,5A

FUSE HOLDER grid 22,5mm

IC1

DS1820

DS1820

TO-92

1-Wire Digital Thermometer

JP1

230VAC

M023.5MM

SCREWTERMINAL

Standard 2-pin 0.1" header.

JP2

Zähler

M023.5MM

SCREWTERMINAL

Standard 2-pin 0.1" header.

MEANWELL

IRM-05-5

IRM_05/10

IRM_05/10

5 watt

NANOESP

ARDUINO_NANO2

nanoESP

Pretzl board

R1

1K0

R-EU_0207/10

0207/10

 

R2

1K0

R-EU_0207/10

0207/10

 

R3

10k0

R-EU_0207/10

0207/10

 

R4

10K0

R-EU_0207/10

0207/10

 

R5

4K7

R-EU_0207/10

0207/10

 

R6

390R

R-EU_0207/10

0207/10

 

R7

390R

R-EU_0207/10

0207/10

 

R8

3k9

R-EU_0207/10

0207/10

 

R9

390R

R-EU_0207/10

0207/10

R10

390R

R-EU_0207/10

0207/10

R11

390R

R-EU_0207/10

0207/10

 

R12

2k2

R-EU_0207/10

0207/10

1

Gerth 0,5VA 9V

EE20-1

EE20-1

TRANSFORMER

Measurement

AC Input

Signal at points 1-2: AC 1

Signal at points 0-4: AC 2

Mains input voltage 225,7VAC-p2p

Power consumption: max=0,0211A avg=0,0127A -> 2,8W

Supply voltage (0-5): 5.01VDC

Reference voltage (0-1): 2.50VDC

 

 

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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