1. Labview Postgresql Connectivity
By Robert Emin

2. Data Flow Sensor ---> 16 Gauge Wire
Data Acquisition Device ---> USB
Windows Computer
Labview
API
TCP/IP ---> Ethernet
Linux Server
Postgresql

3. Allegro 1301 Hall Effect Sensor
Used to measure the presence of a magnetic field.
Hall Effect sensors are used for proximity switching, positioning, speed detection, and current sensing applications. They are used for electronic compasses, clamp-on sensor, analog multiplication, current sensing, position and motion sensing, automotive ignition and fuel injection, wheel rotation sensing, industrial applications, spacecraft propulsion and as many as there is creativity.
4.5 to 6 V input
Ground
2.5 V output

4. National Instruments 6211 Voltage Measurement -10V to +10V
Analog Input
Analog Output
Digital Input
Digital Output
Counter
USB

5. Microsoft Windows 7
Most stable version of Windows operating system. Most supported by National Instruments. Ideal for running real time applications under the Microsoft line of products.

6. National Instruments Labview
Most popular product in engineering for data acquisition and control development. It is a visual development environment Versions for Mac, Linux and Windows. Its programs and functions are known as VI's. Has been around since 1983 and dominates the industry.
On Windows, it is an open architecture allowing to directly interface with dll's, activex, .net and other Windows products.

7. Postgresql2Labview
A collection of Labview VI's built from dll's belonging to the Postgresql library libpq. This allows Labview to directly communicate with Postgresql. Has speed and reliability advantages over other products.

8. Linux
This system uses Debian Linux. Free. Stable. Secure. Can view the source code. Tools for making true real time systems.

9. Postgresql
Open source. Free. True RDMS and object orientated. Robust. Secure. Can see the source code.

13. Table Structure CREATE TABLE "public"."work_voltage" (
"voltage" DOUBLE PRECISION NOT NULL,
"date" DATE DEFAULT 'now'::text::date,
"time" TIME WITHOUT TIME ZONE DEFAULT 'now'::text::time without time zone,
"identifier" BIGSERIAL,
CONSTRAINT "work_voltage_pkey" PRIMARY KEY("identifier") );
Courtesy of Lloyd Albin

14. Labview Call Library Function

15. Interfacing with the dll

17. Any Questions???